496 results on '"Habib U"'
Search Results
2. Thermal Stability and Compatibility of Surfactants in Presence of Formation Water Salinity under Reservoir Conditions
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Muhammad Khan Memon, Ubedullah Ansari, and Habib U Zaman Memon
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Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Science - Abstract
In the surfactant alternating gas injection, the injected surfactant slug is remained several days under reservoir temperature and salinity conditions. As reservoir temperature is always greater than surface temperature. Therefore, thermal stability of selected surfactants use in the oil industry is almost important for achieving their long-term efficiency. The study deals with the screening of individual and blended surfactants for the applications of enhanced oil recovery that control the gas mobility during the surfactant alternating gas injection. The objective is to check the surfactant compatibility in the presence of formation water under reservoir temperature of 90oC and 120oC. The effects of temperature and salinity on used surfactant solutions were investigated. Anionic surfactant Alpha Olefin Sulfonate (AOSC14-16) and Internal Olefin Sulfonate (IOSC15-18) were selected as primary surfactants. Thermal stability test of AOSC14-16 with different formation water salinity was tested at 90oC and 120oC. Experimental result shows that, no precipitation was observed by surfactant AOSC14-16 when tested with different salinity at 90oC and 120oC. Addition of amphoteric surfactant Lauramidopropylamide Oxide (LMDO) with AOSC14-16 improves the stability in the high percentage of salinity at same temperature, whereas, the surfactant blend of IOSC15-18 and Alcohol Aloxy Sulphate (AAS) was resulted unstable. The solubility and chemical stability at high temperature and high salinity condition is improved by the blend of AOSC14-16+LMDO surfactant solution. This blend of surfactant solution will help for generating stable foam for gas mobility control in the methods of chemical Enhanced Oil Recovery (EOR).
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- 2020
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3. Laboratory Analysis of Foam Generating Surfactants and Their Thermal Stability for Enhanced Oil Recovery Application
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Muhammad Khan Memon, Ubedullah Ansari, and Habib U Zaman Memon
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Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Science - Abstract
The residual oil after primary or secondary oil recovery can be recovered by the methods of EOR (Enhanced Oil Recovery). The objective of this study is screening the surfactants that generate maximum stable foam in the presence of brine salinity at 92oC. Laboratory experiments have been performed to examine and compare the stability of generated foam by individual and blended surfactants in the synthetic brine water. AOS C14-16 (Alpha Olefin Sulfonate) and SDS (Sodium Dodecyl Sulfonate) were selected as main surfactants. Aqueous stability test of AOS C14-16 and SDS with brine water salinity 62070ppm was performed at 92oC. AAS (Alcohol Alkoxy Sulfate) was blended with SDS and AOS C14-16. The solution was stable in the presence of brine salinity at same conditions. Salt tolerance experimental study revealed that AOS C14-16 did not produce precipitates at 92oC. Further, the foam stability of surfactant blend was performed. Result shows that, the maximum life time of generated foam was observed by using blend of 0.2wt% SDS+0.2wt% AOS+0.2wt% AS-1246 and 0.2wt% AOS+0.2wt% IOSC15-18+0.2wt% AAS surfactants as compared to the foam generated by individual surfactants. The success of generated foam by these surfactant solutions in the presence of brine water is the primary screening of surfactant stability and foamability for EOR applications in reservoirs type of reservoirs.
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- 2020
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4. GWAS and co-expression network combination uncovers multigenes with close linkage effects on the oleic acid content accumulation in Brassica napus
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Min Yao, Mei Guan, Zhenqian Zhang, Qiuping Zhang, Yixin Cui, Hao Chen, Wei Liu, Habib U. Jan, Kai P. Voss-Fels, Christian R. Werner, Xin He, Zhongsong Liu, Chunyun Guan, Rod J. Snowdon, Wei Hua, and Lunwen Qian
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Oleic acid ,GWAS ,Haplotype ,Co-expression network ,Brassica napus ,Biotechnology ,TP248.13-248.65 ,Genetics ,QH426-470 - Abstract
Abstract Background Strong artificial and natural selection causes the formation of highly conserved haplotypes that harbor agronomically important genes. GWAS combination with haplotype analysis has evolved as an effective method to dissect the genetic architecture of complex traits in crop species. Results We used the 60 K Brassica Infinium SNP array to perform a genome-wide analysis of haplotype blocks associated with oleic acid (C18:1) in rapeseed. Six haplotype regions were identified as significantly associated with oleic acid (C18:1) that mapped to chromosomes A02, A07, A08, C01, C02, and C03. Additionally, whole-genome sequencing of 50 rapeseed accessions revealed three genes (BnmtACP2-A02, BnABCI13-A02 and BnECI1-A02) in the A02 chromosome haplotype region and two genes (BnFAD8-C02 and BnSDP1-C02) in the C02 chromosome haplotype region that were closely linked to oleic acid content phenotypic variation. Moreover, the co-expression network analysis uncovered candidate genes from these two different haplotype regions with potential regulatory interrelationships with oleic acid content accumulation. Conclusions Our results suggest that several candidate genes are closely linked, which provides us with an opportunity to develop functional haplotype markers for the improvement of the oleic acid content in rapeseed.
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- 2020
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5. Acute back pain: A survey of primary health care physicians′ awareness and knowledge of 'red flag' signs
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Khalid A Alsaleh, Abdullah S Alluhaidan, Yazeed K Alsaran, Hesham S Alrefayi, Nizar A Algarni, Habib U Chaudhry, and Zahid Shakoor
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Low back pain ,primary care ,red flags ,Medicine - Abstract
Background: The failure to detect "red flag" signs in patients presenting with acute low back pain can adversely affect the outcome of management. This can seriously affect the quality of life and productivity of the patient. Objective: The present questionnaire-based study was performed to assess the knowledge and awareness of red flag signs among primary health care physicians managing patients with acute back pain in Riyadh, Saudi Arabia. Materials and Methods: The study sample size was comprised of 80 subjects. The level of knowledge was assessed by means of a new structured self-administered questionnaire. The design of this questionnaire was based on the Agency for Health Care Research and Policy (AHCRP) guidelines for detection of red flag signs. Physicians were asked about red flag signs that indicate the presence of tumor, infection, spinal fracture, or cauda equina syndrome. Results: Sixty-eight (85% of total) physicians were aware of red flag signs. Of the 68 physicians who were aware of the red flag signs, 58 (72%) were aware of neurological deficit, 36 (45% of total) were aware of extremes of age (50 years), and 33 (41% of total) were aware of and routinely inquired about the history of spinal trauma, whereas only 24 (30% of total) were aware of and inquired about constitutional symptoms in their patients with acute back pain. Conclusion: Although low back pain is extremely common, knowledge and awareness of red flag signs of primary health care physicians managing patients with acute back pain in Riyadh appear to be inadequate. This indicates a lack of adherence to the international guidelines. Specific educational programs should target these deficiencies and increase awareness.
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- 2016
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6. Genomic Prediction of Testcross Performance in Canola (Brassica napus).
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Habib U Jan, Amine Abbadi, Sophie Lücke, Richard A Nichols, and Rod J Snowdon
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Medicine ,Science - Abstract
Genomic selection (GS) is a modern breeding approach where genome-wide single-nucleotide polymorphism (SNP) marker profiles are simultaneously used to estimate performance of untested genotypes. In this study, the potential of genomic selection methods to predict testcross performance for hybrid canola breeding was applied for various agronomic traits based on genome-wide marker profiles. A total of 475 genetically diverse spring-type canola pollinator lines were genotyped at 24,403 single-copy, genome-wide SNP loci. In parallel, the 950 F1 testcross combinations between the pollinators and two representative testers were evaluated for a number of important agronomic traits including seedling emergence, days to flowering, lodging, oil yield and seed yield along with essential seed quality characters including seed oil content and seed glucosinolate content. A ridge-regression best linear unbiased prediction (RR-BLUP) model was applied in combination with 500 cross-validations for each trait to predict testcross performance, both across the whole population as well as within individual subpopulations or clusters, based solely on SNP profiles. Subpopulations were determined using multidimensional scaling and K-means clustering. Genomic prediction accuracy across the whole population was highest for seed oil content (0.81) followed by oil yield (0.75) and lowest for seedling emergence (0.29). For seed yieId, seed glucosinolate, lodging resistance and days to onset of flowering (DTF), prediction accuracies were 0.45, 0.61, 0.39 and 0.56, respectively. Prediction accuracies could be increased for some traits by treating subpopulations separately; a strategy which only led to moderate improvements for some traits with low heritability, like seedling emergence. No useful or consistent increase in accuracy was obtained by inclusion of a population substructure covariate in the model. Testcross performance prediction using genome-wide SNP markers shows considerable potential for pre-selection of promising hybrid combinations prior to resource-intensive field testing over multiple locations and years.
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- 2016
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7. Birt-Hogg-Dubé Syndrome: Report of a New Mutation
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Habib U Rehman
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Diseases of the respiratory system ,RC705-779 - Abstract
Birt-Hogg-Dubé syndrome is an autosomal dominant genodermatosis caused by germline mutations in the folliculin gene and characterized by facial papules, pulmonary cysts, kidney tumours and recurrent pneumothoraces. Several distinct mutations in the folliculin gene resulting in a truncated protein have been described. The present report describes a new mutation, which has not been reported in individuals with Birt-Hogg-Dubé syndrome but is of a type predicted to cause disease.
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- 2012
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8. Regional association analysis coupled with transcriptome analyses reveal candidate genes affecting seed oil accumulation in Brassica napus
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Yao, Min, Guan, Mei, Yang, Qian, Huang, Luyao, Xiong, Xinghua, Jan, Habib U., Voss-Fels, Kai P., Werner, Christian R., He, Xin, Qian, Wei, Snowdon, Rod J., Guan, Chunyun, Hua, Wei, and Qian, Lunwen
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- 2021
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9. Diurnal changes in bacterial communities in oxic surface and hypoxic middle seawater layers of the Changjiang River Estuary
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Huang, Yan, Yuan, Lei, Fan, Yingping, Jakhrani, Habib U. Rehman, and Wang, Jianxin
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- 2021
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10. Thermal stability and compatibility of surfactants in presence of formation water salinity under reservoir conditions
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Memon, Muhammad Khan, Ansari, Ubedullah, and Memon, Habib U Zaman
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- 2020
11. Laboratory analysis of foam generating surfactants and their thermal stability for enhanced oil recovery application
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Memon, Muhammad Khan, Ansari, Ubedullah, and Memon, Habib U Zaman
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- 2020
12. Assessment of Real Time, Multi-Satellite Precipitation Products under Diverse Climatic and Topographic Conditions
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Masood, Muhammad, Shakir, Abdul Sattar, Azhar, Aftab Hussain, Nabi, Guhlam, and Habib-u-Rehman
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- 2020
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13. Effects of dietary chromium supplementation on muscle and bone mineral interaction in broiler chicken
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Saeed, Abdullah A., Sandhu, Mansur A., Khilji, Muhammad S., Yousaf, Muhammad S., Rehman, Habib U., Tanvir, Zafar I., and Ahmad, Tanveer
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- 2017
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14. GWAS and co-expression network combination uncovers multigenes with close linkage effects on the oleic acid content accumulation in Brassica napus
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Yao, Min, Guan, Mei, Zhang, Zhenqian, Zhang, Qiuping, Cui, Yixin, Chen, Hao, Liu, Wei, Jan, Habib U., Voss-Fels, Kai P., Werner, Christian R., He, Xin, Liu, Zhongsong, Guan, Chunyun, Snowdon, Rod J., Hua, Wei, and Qian, Lunwen
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- 2020
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15. Analysis of Mechanical Properties of Coir/Portland Pozzolana Reinforced Polymer Matrix Composites
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Ankit Asthana, Nitesh Singh, Habib U. Balti, Sandeep Kashyap, and Abu Talha
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Fibre Coir, matrix, reinforcement, Portland pozzolana, epoxy, flexural strength, impact strength - Abstract
The current analysis deals with the fabrication of the composite sheets with the epoxy reinforced with natural fiber, Coir and the Portland pozzolana. In today’s time composite material plays a very important role in engineering application. we can replace the wood with the composite, even the composite is a recyclable. Fields like the aerospace and automobiles sectors always need the lighter weight material with good strength. Many of the parts are complex which can be made by the forming process. A matrix is prepared by using epoxy resin and when it comes to the reinforcement material it could be the natural or artificial fibers. In this we have used the coir (coconut husk) and Portland pozzolana particles. To make the composite traditional hand lay-up process method was used. After that mechanical performance was analyzed by testing the flexural strength and impact strength of samples. Polymer matrix composite is light weight with the good strength and have various mechanical abilities. It is found that coir/epoxy composite sample plates have the higher flexural strength and impact strength, and Portland pozzolana have the highest flexural modulus which proved that abovesaid composites are great alternatives to wood and plastics and over other metals.
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- 2023
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16. Building integrated assessment model for IoT technology deployment in the Industry 4.0
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Yasir Ali, Habib Ullah Khan, Faheem Khan, and Yeon-kug Moon
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Internet-of-Things ,IoT platform ,Industrial IoT (IIoT) ,AHP ,TOPSIS ,Delphi ,Computer engineering. Computer hardware ,TK7885-7895 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Abstract Internet of Things (IoT) platforms have become the building blocks of any automated system but they are more important in case of industrial systems where sensitive data are captured and handled by the information system. Therefore, it is imperative to deploy the right IoT platform to perform the computational and operational tasks in a better way. During the last few years, an array of IoT technologies/platforms with different capabilities and features were introduced in the markets. This abrupt rise created selection and decision-making issues particularly for the network engineers, designers, and industrial managers due to a lack of technical understanding and skill in this area. Therefore, we present an integrated assessment model focusing on evaluating and ranking IoT platforms in the industrial environment. It encompasses multiple methods such as the proposed model leverages a well-known data collection technique such as Delphi for data collection related to the criteria features. It adopts the Analytic Hierarchy Process (AHP) for giving weights to the criteria features. The technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method has been applied for the evaluation of the top twenty (20) Industrial IoT(IIoT) platform alternatives according to the proposed criteria. It selects the most rational choice of IoT platform that can be employed in the Industry 4.0 setting. The proposed integrated assessment model produces the most accurate and consistent outcomes. Hence, it is believed that it can be used as a guideline by different stakeholders like researchers, developers, network engineers, and policymakers for the assessment and deployment of IoT platforms in the industrial environment. It is believed that it is the first kind of multi-methods integrated assessment mode for the assessment, decision-making, and prioritization of IoT technologies in the industry 4.0 domain.
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- 2024
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17. New semiconducting K2MgSiH6 (H = Cl & Br) halides have been investigated via DFT approach; their mechanical, optical, and structural properties were studied in detail
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Javed Iqbal, Habib Ullah, Mohammad Khishe, Seyed Majid Hasani Azhdari, Raiz Ullah, and Zaffar Iqbal
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Halides ,Bandgap ,Absorption ,Conductivity ,Medicine ,Science - Abstract
Abstract Researchers are now avoiding perovskite materials containing lead due to their toxicity and instability in open air and heat. In this study, our research group worked on potassium-based K2MgSiCl6 & K2MgSiBr6 perovskite compounds and thoroughly investigated these materials’ basic behaviours. Goldschmidt and formation energy results certify the structure and thermodynamic stabilities of the studied compounds. The band gaps noted for the K2MgSiCl6 & K2MgSiBr6 perovskites were 2.42 eV & 1.88 eV, respectively. After the mechanical observations of the investigated compounds, it became apparent that both the studied compounds own brittle and anisotropic nature. Based on the tendency to absorb electromagnetic radiations both in the ultra-violet and visible range, it enables the K2MgSiCl6 & K2MgSiBr6 perovskites suitable for detectors, solar cells, and many other optoelectronic devices. The K2MgSiBr6 material showed the first response to the electromagnetic radiations in the visible range and acquired the optical conductivity value of 1219 (Ω.cm)-1; however, K2MgSiCl6 material showed its response to a bit higher energetic photons in the visible range than K2MgSiBr6 material, but its optical conductivity was higher (i.e., 1270 (Ω.cm)-1) than the K2MgSiBr6 material in the visible range.
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- 2024
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18. Thrombophilia testing in venous thromboembolism
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Rehman, Habib U.
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- 2018
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19. Finite Element Approach for Rheological Behavior in Colloidal Electrolytes in Lithium-Ion Battery Performance
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Ahsan Raza, Tareq Manzoor, Shaukat Iqbal, Tauseef Anwar, Adeel Ashraf, and Habib Ullah Manzoor
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Chemistry ,QD1-999 - Published
- 2024
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20. Leveraging InGaN solar cells for visible light communication reception
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Habib Ullah Manzoor, Sanaullah Manzoor, Muhammad Ali Jamshed, and Tareq Manzoor
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free‐space optical communication ,optical communication ,passive optical networks ,Telecommunication ,TK5101-6720 - Abstract
Abstract Solar cells are increasingly being utilised for both energy harvesting and reception in free‐space optical (FSO) communication networks. The authors focus on the implementation of a mid‐band p‐In0.01Ga0.99 N/p‐In0.5Ga0.5 N/n‐In0.5Ga0.5 N (PPN) solar cell, boasting an impressive 26.36% conversion efficiency (under 1.5AM conditions) as a receiver within an indoor FSO communication network. Employing a solar cell with dimensions of 1 mm in length and width, the FSO system underwent simulation using Optisystm software, while the solar cell's behaviour was simulated using SCAPS‐1D. The received power from the solar cell was then compared to that of four commercially available avalanche photodiode (APD) receivers. Exploring incident wavelengths spanning 400–700 nm within the visible spectrum, across transmission distances of 5, 10, 15, and 20 m, the study presented current‐voltage (IV) and power‐voltage curves. Notably, the InGaN solar cell exhibited superior electrical power output compared to all commercial APDs. In conclusion, the findings underscore that augmenting received power has the potential to enhance FSO network quality and support extended transmission distances.
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- 2024
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21. Interference in photo‐detachment of triatomic negative ion near a hard reflecting surface.
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Khan, Farooq, Rehman, Habib U., Asif, Syed M., Khan, Muhammad Abbas, and Khan, Muhammad Aslam
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ANIONS , *ELECTRON affinity , *PHENOMENOLOGICAL theory (Physics) , *COHERENT radiation , *RADIATION sources - Abstract
The physical phenomena in which an extra electron is removed from a negative ion is called photo‐detachment. Photo‐detachment is important phenomena, used to find the structure of anions, particularly to find the electron affinities. In this paper, we present theoretically the induced effects in the photo‐detached of triatomic anion H3− near hard reflecting wall or surface. For the photo‐detachment process, a z‐polarized coherent source of radiations (laser) is used to kick electrons from H3− anion in the domain of a hard reflecting surface. Imaging method is adopted to derive the generalized detached electron wave, differential cross‐section and the total photo detachment cross‐section analytically. Numerical solutions (simulations) for total electron flux and the total cross‐section is presented. The electron flux, shows visible oscillations and hence the induced effect of surface in the interference. It is depicted that the reflecting hard wall strongly affects the flux and total photo‐detachment cross‐section. The analytical results are extended for triiodide I3− anion numerically, which also show interference. The total photo detachment cross‐section for I3− is calculated numerically and compared with cross‐section of H3−. [ABSTRACT FROM AUTHOR]
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- 2023
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22. Provenance of lower Paleozoic sedimentary rocks in Tasmania and Waratah Bay, southern Victoria: constraints from detrital zircon hafnium isotopes and trace-element geochemistry.
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Habib, U., Meffre, S., Berry, R., and Belousova, E.
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HAFNIUM isotopes , *SEDIMENTARY rocks , *LASER ablation inductively coupled plasma mass spectrometry , *RARE earth metals , *ISOTOPE geology , *ZIRCON , *OROGENIC belts , *GEOCHEMISTRY ,GONDWANA (Continent) - Abstract
Nine Paleozoic sedimentary formations from western Tasmania and two from the Lachlan Orogen—one in northeast Tasmania and one in Waratah Bay in Victoria—contain detrital zircons that fall into major U–Pb age clusters at 2.0–1.4, 1.25–0.95 and 0.62–0.49 Ga. The zircon Th/U ratios and rare earth element (REE) patterns suggest a magmatic origin for detrital zircons in all these rock sequences. The REE geochemical signatures on bivariate discrimination diagrams indicate that most of the zircons originated in continental orogenic settings. The oldest group of zircons have a southwest Laurentian signature previously recognised from Proterozoic metasedimentary rocks in Tasmania. The 1.25–0.5 Ga zircons from all the samples have very similar εHfi values. They are not statistically different from those of typical Lachlan Orogen sandstones and resemble those in Rodinia and early Gondwana orogenic belts. The εHfi values of the Cambrian zircons within the Pioneer Sandstone are similar to the Mount Read Volcanics but cannot be distinguished on εHfi values from other sources in East Gondwana. The detrital zircon provenance of the Bear Gully Chert Bed at the base of the Digger Island Marlstone at Waratah Bay includes the west Tasmanian Proterozoic, the East Gondwana margin and the Macquarie Arc. This mixed provenance provides evidence for the late Cambrian docking of VanDieland with East Gondwana. New zircon Hf isotope data are reported for early Paleozoic sedimentary rocks in Tasmania and Waratah Bay, southern Victoria. The western Tasmania basement was the dominant source for Tasmanian sandstones and a minor source for the Lachlan Orogen sandstones on the northeast margin of VanDieland. The mixed provenance of the Bear Gully Chert supports a late Cambrian accretion of VanDieland to the East Gondwana margin. The youngest zircons in the Bear Gully Chert at Waratah Bay were potentially sourced from the Macquarie Arc. [ABSTRACT FROM AUTHOR]
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- 2023
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23. Growth, immunomodulatory, histopathological, and antibacterial effects of phytobiotic-incorporated diets on Oreochromis niloticus in unchanged water
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Amr Fadel, Mohamed M. M. Metwally, Habib Ul Hassan, Adel A. Abdelmageed, Takaomi Arai, Mohammad Z. Ahmed, and Mohamed F. A. Abdel-Aziz
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Oreochromis niloticus ,Melissa officinalis ,Origanum majorana ,Matricaria chamomilla ,unchanged water ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Phytobiotics are promising diet alternatives, yet their effectiveness in high-risk aquaculture conditions remains underexplored. Therefore, a 90-day feeding trial was conducted based on dietary supplementation of Nile tilapia, Oreochromis niloticus, with herbal extracts, namely, lemon balm [Melissa officinalis (MOE)], marjoram [Origanum majorana (OME)], and chamomile [Matricaria chamomilla (MCE)] with 0% water change. The treated groups were compared to groups untreated with herbs or control groups [positive control (PC; 0% water change) and negative control (NC; 20% water exchange per day]. Fish were cultured at stocking density (20 fish m-3: 1.8kg of biomass/m3). We conducted a physicochemical analysis of the water and the clinical responses, growth, and immune responses of the fish were evaluated. Furthermore, the herbal-supplemented fish were then challenged with a pathogenic Edwardseilla tarda strain and mortality was monitored. In the 1st and 2nd months, the water parameters were within the permissible limits. After that, a fatally low dissolved oxygen concentration and the highest levels of ammonia, nitrite, nitrate, and pH were recorded during the 3rd month. Blood and immune assays were conducted in the treated groups and control groups. The herbal-treated groups appeared healthy, but during the 3rd month, lethargy and decreased appetite were evident. Generally, the herbal-treated fish showed improved growth performance parameters, survival rates, and resistance against pathogenic bacteria E. tarda, particularly in the OME and MOE-treated groups compared to the positive control group. Finally, phytobiotic supplements were shown to improve fish stress tolerance and immune activation for a certain period under stressful conditions or unchanged water, based on the stocking density, dosages of herbs used, and the extent of deterioration of the water quality.
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- 2024
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24. Optimizing marine vehicles industry: a hybrid analytical hierarchy process and additive ratio assessment approach for evaluating and selecting IoT-based marine vehicles
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Habib Ullah Khan, Muhammad Abbas, Shah Nazir, Faheem Khan, and Jamil Hussain
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Internet of Things ,Marine vehicle industry ,MCDA ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Rapid developments in the Internet of Things (IoT) have opened the door for game-changing applications in numerous sectors, especially the vehicle industry. There is a rising demand for efficient assessment and decision-making methodologies to pinpoint the most promising choices for the vehicle sector with the introduction of IoT-based maritime vehicles. To overcome this issue, the integrated multi-criteria decision-making analysis (MCDA) paradigm proposed in this research combines the additive ratio assessment (ARAS) and analytic hierarchy process (AHP) approaches to evaluate and choose IoT-based maritime vehicles based on their performance- and authenticity-related criteria in the vehicle sector. The selection issue is hierarchically organized, and the assessment criteria are prioritized using the AHP approach. There are seven performance and authentication related criteria are selected that might aid in the selection procedure. Using the AHP, we are assigned these criteria proportionate weights that reflect their respective significance and interrelationships. AHP, however, falls short of offering a thorough analysis of the alternatives that exist. To overcome these restrictions, this research presents the integration of AHP with the ARAS approach for the ranking of alternatives according to how well they perform against the set criteria. By using the ARAS technique, it is possible to get over the restrictions of AHP and achieve a more thorough assessment of maritime IoT-based vehicles. The efficiency of the framework is proven using empirical data and professional judgment. The findings show that the hybrid method successfully encapsulates the intricate relationships between the factors being evaluated and objectively appraises the potential of IoT-based maritime vehicles for the automotive sector. This study extends to the area by providing an organized and thorough method for assessing and choosing IoT-based maritime vehicles. Considering several factors and their mutual dependence, the hybrid AHP and ARAS technique gives decision-makers a powerful tool for evaluating the potential of IoT-based maritime vehicles in the automotive sector. Smart decisions on the deployment of IoT-based marine vehicles and maximizing the potential they present may be made by beneficiaries in the automotive sector using the study’s results.
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- 2024
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25. Height‐dependent LoS probability model for A2G channels incorporating airframe shadowing under built‐up scenario
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Farman Ali, Yinglan Pan, Qiuming Zhu, Naeem Ahmad, Kai Mao, and Habib Ullah
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5G mobile communication ,adaptive signal processing ,aircraft antennas ,aircraft communication ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Abstract The line of sight (LoS) probability is a key factor for the channel modeling of air‐to‐ground (A2G) communication. However, the existing LoS probability models do not account for the effects of airframe shadowing (AS) and building density, which can cause serious link obstruction and performance loss due to the six‐dimensional (6D) mobility and self‐body of unmanned aerial vehicle (UAV). In this article, a new LoS probability model is proposed that considers the AS and building density for different UAV heights. Adding to this, the AS is derived in terms of UAV framework and 6D mobility. Next, the machine learning (ML) based graph neural network (GNN) method is developed to learn the features and structure of the urban environment and predict the LoS probability. Then, the GNN model is trained and evaluated based on the ray tracing (RT) data to establish the relationship between model parameters and UAV heights under the building density and AS factors. The interpretation and explanation of the proposed GNN model and prediction are also discussed in this article. It is shown from the simulation analysis that the GNN model accurately captures the effects of AS, building height distributions, and UAV heights, with high accuracy compared to the baseline 3GPP, GCM and NYU models.
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- 2024
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26. Brassinosteroid-induced transcriptomic rearrangements unveiled the physiological mechanism of chromium stress tolerance in Brassica napus
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Xiaofen Wu, Lan Li, Fakhir Hannan, Tongjun Qin, Ahsan Ayyaz, Jiali Ma, Habib Ur Rehman Athar, Zafar Ullah Zafar, Muhammad Ahsan Farooq, and Weijun Zhou
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Antioxidants ,Chlorophyll fluorescence ,Oilseed rape ,Plant hormone ,RNA seq ,Botany ,QK1-989 - Abstract
Brassinosteroid (BR), a plant hormone regulating growth, development, and stress responses, emerges as a promising tool for maintaining agricultural production under abiotic stress conditions. In this study, we conducted RNA-seq profiling and morpho-physiological analysis to investigate the molecular cross-talk involved in 24-epibrassinolide (EBR) mediating alleviation of chromium (Cr) stress. EBR inhibited Cr accumulation and reversed Cr-induced phytotoxicity, thereby promoting plant growth. The photosynthetic pigments, chlorophyll fluorescence a, electron transport rate (ETR) and non-photochemical quenching (NPQ) were significantly higher in EBR+Cr treated plants compared to Cr alone. EBR application facilitated the recovery from Cr-induced structural deformities, including the disintegration of cell walls and membranes. Furthermore, under Cr stress, EBR application reduced malondialdehyde (MDA) and reactive oxygen species (ROS) production and accumulation. The levels of glutathione reductase (GR) and the activities of antioxidant enzymes were notably higher in plants subjected to EBR application following Cr stress. In addition, we established a transcriptomic database comprising 2345 differentially expressed genes (DEGs) (1255 upregulated and 1090 downregulated) as a result of EBR application under Cr stress. The transcriptome analysis unveiled key DEGs and the associated pathways, emphasizing the importance of defense responses, genes encoding photosystem I and II, jasmonate signaling, aquaporins, ABC transporters, and cell wall biogenesis-related genes in the response of EBR to Cr stress.
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- 2024
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27. Integrating industry 4.0 technologies in defense manufacturing: Challenges, solutions, and potential opportunities
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Habib Ullah, Muhammad Uzair, Zohaib Jan, and Mohib Ullah
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Industry 4.0 ,Defense ,Data standards ,Additive manufacturing ,Digitization ,Cybersecurity ,Computer engineering. Computer hardware ,TK7885-7895 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
This paper explores the challenges and potential solutions related to data collection, integration, processing, and utilization in defense manufacturing within the context of Industry 4.0. While Industry 4.0 envisions the integration of various technologies to achieve seamless operations in industries, the unique characteristics of defense manufacturing, such as stringent data limitations and security requirements, make direct translation challenging. Through a comprehensive review of academic literature, key themes were identified, including quality control, digitalization, cyber–physical aspects, sustainability, risk management, ownership of information, and security. Drawing from the reviewed publications, potential solutions were distilled into related approaches, such as data governance frameworks, data exchange standards, blockchain, additive manufacturing, transparent digital supply chains, and smart factories. These solutions present opportunities for the Australian defense manufacturing industry to overcome the identified challenges and leverage the benefits of Industry 4.0, including improved quality control, increased efficiency, enhanced security, and optimized supply chains. By embracing these opportunities, the defense manufacturing sector can successfully navigate the complexities of Industry 4.0 and realize its vision of seamless integration for continued growth and success.
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- 2024
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28. Laboratory Analysis of Foam Generating Surfactants and Their Thermal Stability for Enhanced Oil Recovery Application
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Ubedullah Ansari, Habib U. Zaman Memon, and Muhammad Khan Memon
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Materials science ,lcsh:T ,02 engineering and technology ,010502 geochemistry & geophysics ,01 natural sciences ,lcsh:Technology ,020401 chemical engineering ,Chemical engineering ,lcsh:TA1-2040 ,Thermal stability ,lipids (amino acids, peptides, and proteins) ,lcsh:Q ,Enhanced oil recovery ,0204 chemical engineering ,General Agricultural and Biological Sciences ,lcsh:Engineering (General). Civil engineering (General) ,lcsh:Science ,0105 earth and related environmental sciences - Abstract
The residual oil after primary or secondary oil recovery can be recovered by the methods of EOR (Enhanced Oil Recovery). The objective of this study is screening the surfactants that generate maximum stable foam in the presence of brine salinity at 92oC. Laboratory experiments have been performed to examine and compare the stability of generated foam by individual and blended surfactants in the synthetic brine water. AOS C14-16 (Alpha Olefin Sulfonate) and SDS (Sodium Dodecyl Sulfonate) were selected as main surfactants. Aqueous stability test of AOS C14-16 and SDS with brine water salinity 62070ppm was performed at 92oC. AAS (Alcohol Alkoxy Sulfate) was blended with SDS and AOS C14-16. The solution was stable in the presence of brine salinity at same conditions. Salt tolerance experimental study revealed that AOS C14-16 did not produce precipitates at 92oC. Further, the foam stability of surfactant blend was performed. Result shows that, the maximum life time of generated foam was observed by using blend of 0.2wt% SDS+0.2wt% AOS+0.2wt% AS-1246 and 0.2wt% AOS+0.2wt% IOSC15-18+0.2wt% AAS surfactants as compared to the foam generated by individual surfactants. The success of generated foam by these surfactant solutions in the presence of brine water is the primary screening of surfactant stability and foamability for EOR applications in reservoirs type of reservoirs.
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- 2020
29. Antiobiotic Prophylaxis Is Different in Guidelines
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Rehman, Habib U.
- Published
- 2008
30. Modeling security evaluation framework for IoHT-driven systems using integrated decision-making methodology
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Habib Ullah Khan and Yasir Ali
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GTM ,TOPSIS ,IoHT assessment framework ,Authentication security requirements ,Medicine ,Science - Abstract
Abstract The intensification of the Internet of Health Things devices created security concerns due to the limitations of these devices and the nature of the healthcare data. While dealing with the security challenges, several authentication schemes, protocols, processes, and standards have been adopted. Consequently, making the right decision regarding the installation of a secure authentication solution or procedure becomes tricky and challenging due to the large number of security protocols, complexity, and lack of understanding. The major objective of this study is to propose an IoHT-based assessment framework for evaluating and prioritizing authentication schemes in the healthcare domain. Initially, in the proposed work, the security issues related to authentication are collected from the literature and consulting experts’ groups. In the second step, features of various authentication schemes are collected under the supervision of an Internet of Things security expert using the Delphi approach. The collected features are used to design suitable criteria for assessment and then Graph Theory and Matrix approach applies for the evaluation of authentication alternatives. Finally, the proposed framework is tested and validated to ensure the results are consistent and accurate by using other multi-criteria decision-making methods. The framework produces promising results such as 93%, 94%, and 95% for precision, accuracy, and recall, respectively in comparison to the existing approaches in this area. The proposed framework can be picked as a guideline by healthcare security experts and stakeholders for the evaluation and decision-making related to authentication issues in IoHT systems
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- 2024
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31. Analysis of upper and lower nappe profiles of large orifice for the design of bottom and roof profiles of high head orifice spillway
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Shafqat Hussain Bhatti, Habib Ur Rehman, Muhammad Kaleem Sarwar, Muhammad Waqas Zaffar, Muhammad Awais Zafar, and Muhammad Atiq Ur Rehman Tariq
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large orifice ,lower profile ,orifice spillway ,physical modelling ,upper profile ,Environmental technology. Sanitary engineering ,TD1-1066 ,Environmental sciences ,GE1-350 - Abstract
Large orifices are constructed for dams to release water and sediments from reservoirs. Such structures are called submerged spillways. Numerous studies have investigated discharge coefficient, velocity coefficient, and head loss coefficient of large orifices; however, the literature lacks data on the upper and lower nappes of the jets from these orifices. In the present experimental study, the upper and lower nappes are investigated up to 80 m head at different gate openings. The observed minor deviation between the lower nappe profile and trajectory profile equation suggests sensitivity to different factors. The significant role of the coefficient of velocity, averaging at 0.926, highlights its impact on minor deviation. Subsequently, the impact of the solid bottom profile on the discharge coefficient and upper nappe profile are also examined. The results show improvement in discharge coefficient of a sharp-edged large orifice, which increased from 0.69 to 0.74. The results also indicate that the upper nappe profiles and United States Bureau of Reclamation (USBR) profiles are similar. The improvement in the upper nappe profile indicates the significant role of the solid bottom profile, which consequently was found to be helpful in defining the roof profile of an orifice spillway. . HIGHLIGHTS Hydraulic analyses of lower and upper nappe profiles of sharp-edged large orifices.; Impact evaluation of a solid bottom profile on an upper nappe profile.; Hydraulic performance evaluation of solid bottom profile at various operational scenarios.;
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- 2024
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32. Trace metals and nutrient analysis of marine fish species from the Gwadar coast
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Masooma Khawar, Zubia Masood, Habib Ul Hasan, Wali Khan, Patricio R. De los Ríos-Escalante, Mashael Abdullah Aldamigh, Noorah Saleh Al-Sowayan, Wajeeha Razzaq, Tawseef Khan, and Mourad Ben Said
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Marine fishes ,High-quality proteins ,Lipids ,Trace metals ,Nutrient analysis ,Sustainable fishing practices ,Medicine ,Science - Abstract
Abstract Trace metals are naturally occurring metals found in very small concentrations in the environment. In the context of fish flesh, metals such as copper, calcium, potassium, sodium, zinc, iron, and manganese are absorbed by fish and play vital roles in various physiological functions. However, if these metals exceed the recommended limits set by WHO/FAO, they are termed 'toxic metals' due to their harmful impacts on both the fish and its consumers. Therefore, the present study aims to analyze the levels of protein, lipids, and certain metals—Aluminum (Al), Sodium (Na), Zinc (Zn), Titanium (Ti), Iron (Fe), Copper (Cu), Potassium (K), and Calcium (Ca) in three commercially important marine fishes i.e. Rastrelliger kanagurta, Sardinella abella, and Otolithes ruber. The study also aims to assess their potential impact on human health. The macro-Kjeldhal method and Soxhlet apparatus were used to estimate protein and lipid contents, while atomic absorption spectroscopy (AAS) was used to estimate trace metals found in fishes. The study found that these fish species are valuable sources of protein, lipids, and certain essential minerals. The protein content (CP) in these three species ranged from 63.35 to 86.57%, while lipid content was from 21.05 to 23.86%. The overall results of the trace metal concentrations analyzed in the present study revealed that Aluminum (Al), Sodium (Na), Zinc (Zn), Titanium (Ti), Copper (Cu), Potassium (K), and Calcium (Ca) were found in low concentration or traces and also within suitable ranges as set by WHO/FAO. However, Iron (Fe) was absent in all three species. Moreover, both copper and potassium were found in all three species, while Zinc was present in Rastrelliger kanagurta and Sardinella abella, calcium in Sardinella abella, and sodium in Otolithes ruber only. Titanium was recorded for the first time in S. abella. However, the total health risk assessment associated with these fish food consumption was measured by THQ and TTHQ and found to be less than 1, which shows no potential risk related to trace metals found in these fishes on human health upon their consumption. In conclusion, these commercially important marine fish species were found valuable sources of protein, lipids, and essential trace minerals that are necessary for human health. Thus, the current study provides useful information for the local population to make informed decisions about their daily diets and highlights the importance of sustainable fishing practices to maintain these valuable marine resources by periodical monitoring of their ecosystem.
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- 2024
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33. Identification and characterization of cysteine-rich polycomb-like protein (CPP) gene family in rice (Oryza sativa L.) in response to phytohormones and Xanthomonas oryzae pv. oryzae stress
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Sadia Gull, Muhammad Arfan, Saleem Uddin, Muhammad Qasim, Saba Babar, Nimra Rajput, Habib Ullah, Qurat ul Ain, Badr Alharthi, Shabir Ahmad, and Rashid Iqbal
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Rice ,cysteine-rich polycomb-like protein (CPP) ,Phytohormones ,Xanthomonas oryzae pv. oryzae (Xoo) ,Plant ecology ,QK900-989 - Abstract
Cysteine-rich polycomb-like proteins (CPPs) are found in both monocotyledonous and dicotyledonous plants. These CPPs are part of nine various families of proteolytic enzymes, and they play a crucial role in various physiological, especially defence mechanisms. Nevertheless, there is a lack of findings regarding the function of CPPs in disease resistance in rice (Oryza sativa). We recently discovered eleven CPPs in the rice genome. They can be divided into three clades: I, II, and III along with CPPs from other plants like Arabidopsis thaliana (eight members), Cucumis sativus (five members), and Glycine max (thirteen members) based on their phylogenetic relationships. It is interesting to observe how segmental duplication (SD) has assisted the emergence of the OsCPP genes in rice, whereas no evidence of tandem duplication (TD) has been detected. Synteny analyses revealed three pairs of orthologous CPP genes amongst O. sativa and A. thaliana, as well as three pairs between O. sativa and C. sativus. These OsCPPs possess ten conserved amino acid motifs and several exons and introns, as determined by their gene structures. Additionally, they possess distinctive domains such as TCR and TCR superfamily domains. Cis-regulatory elements identified in the OsCPP promoter sequences were shown to be sensitive to auxin, abscisic acid, gibberellins, salicylic acid, methyl jasmonate, and light. Furthermore, stress-responsive elements and tissue-specific expression elements were identified. A large number of OsCPP genes are expressed in different kinds of tissues and organs. Several of these genes are induced by abscisic acid and jasmonic acid. Moreover, specific OsCPP genes are stimulated by Xanthomonas oryzae pv. oryzae (Xoo), the pathogen responsible for bacterial leaf blight in rice. In particular, the pathogen causes a notable overexpression of OsCPP9, suggesting its potential involvement in the plant's defense system. These results highlight the possible contributions of OsCPP genes to rice resistance against Xoo disease.
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- 2024
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34. A similarity-based multi-objective test optimization technique using search algorithm
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Amir Sohail Habib, Saif Ur Rehman Khan, Shahid Hussain, Naseem Ibrahim, Habib un Nisa, and Abdullah Yousafzai
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Regression testing ,test suite reduction ,Multi-objective optimization ,Meta-heuristic search algorithms ,Grey Wolf Optimizer ,Information technology ,T58.5-58.64 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Context:: Software undergoes a constant evolution driven by ongoing changes in customer requirements, which enhances the competitive advantage. Regression testing plays a pivotal role by ensuring that modifications have not introduced detrimental effects on the system under test. Problem:: However, regression testing becomes prohibitively expensive as the software grows in complexity and the size of the test suite also expands. Moreover, keeping the test cases up-to-date and managing the relevant test data can become a laborious and challenging task. Hence, it is required to optimize the test suite by finding a diverse subset of test cases having high code coverage, fault-detection rate, and minimal execution time. Objective:: To solve the regression test optimization problem, the researchers have proposed various approaches including greedy algorithms, search-based algorithms, and clustering algorithms. However, existing approaches lack in finding the global optimal solution and are mostly focused on the single-objective test optimization problem. Inspired by this, we propose a Similarity-based Multi-Objective Optimization Technique (SMOOT) for test suite reduction using a Grey Wolf Optimizer (GWO) algorithm. The proposed technique employs different similarity metrics, including Cosine Similarity, Euclidean Distance, Jaccard Similarity, Manhattan Distance, and Minkowski Distance, to evaluate the similarity score of the tests. This ensures a comprehensive assessment of test diversity to achieve high code coverage and fault-detection rate while minimizing the test execution cost. Method:: We evaluated the performance of GWO with state-of-the-art search-based algorithms using three varying types of case studies. Similarly, to evaluate the similarity score of the considered search algorithms, we employed state-of-the-art similarity measures. Results:: The experimental results revealed that GWO significantly outperformed the considered search algorithms by attaining high code coverage and fault-detection rate while minimizing the test execution time. Moreover, we found that GWO attained a higher similarity score than the other considered search algorithms using the employed similarity measures. Conclusion:: Based on the attained results, we believe that the proposed technique could be useful for the researchers and practitioners by effectively handling multi-objective regression test optimization problem.
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- 2024
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35. Identifying the AI-based solutions proposed for restricting Money Laundering in Financial Sectors: Systematic Mapping
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Habib Ullah Khan, Muhammad Zain Malik, and Shah Nazir
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Electronic computers. Computer science ,QA75.5-76.95 ,Cybernetics ,Q300-390 - Abstract
ABSTRACTMoney laundering (ML) is a critical source of extracting the money illegally from the financial system. It is linked to various types of crimes, including corruption, exploitation of a specific community, drug use, and many others. Detection of ML operations is a difficult task on a global scale due to the large volume of financial transactions. However, it also allows criminals to use financial systems to carry out fraudulent transactions. It mainly concern minimizing the potentially risks associated with money laundering. Anti-money laundering-(AML) tools based on AI-driven applications are now tracking transactions to overcome this challenge. A total of 112 research papers are assessed to identify the literature’s gaps and suggest new directions for the research area accordingly. The findings of this systemic literature review work will not only open new paths for the research community, but will also assist the state agencies in developing an optimal AML system to counter these major issues and provide a healthy environment for their residents. This article seeks to assess the existing situation from various angles and open up new pathways for future research directions to investigate and build high levels of authenticity and security in the financial industry using artificial intelligence (AI).
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- 2024
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36. Feeding Behavior and Plasmodium Detection in Anopheles stephensi, a Malaria Vector in District Khyber, Khyber Pakhtunkhwa, Pakistan
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Mahnoor Arif, Syed Basit Rasheed, Habib Ullah, Tawaf Ali Shah, Faiz Ur Rehman, and Turki M. Dawoud
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Anopheles stephensi ,Plasmodium vivax ,Plasmodium falciparum ,Pakistan ,Infectious and parasitic diseases ,RC109-216 - Abstract
Background: Anopheles stephensi is a significant malaria vector in Pakistan, and understanding its feeding behavior is necessary to control the spread of malaria. However, limited information is available on the host preferences of A. stephensi in Pakistan. Therefore, we aimed to explore the feeding behavior of A. stephensi, a malaria vector, in the District Khyber, Khyber Pakhtunkhwa, Pakistan. Methods: A total of 7462 mosquitoes were collected between March and September 2021, with 1674 (22.4%) identified as A. stephensi (952 female and 722 male). Among the female A. stephensi, 495 (52%) were blood-fed. DNA was extracted from the blood-fed female A. stephensi mosquitoes using the Ammonium Acetate Precipitation Method followed by PCR analysis, blood meal sources were identified. Nested PCR on 191 pooled samples was used to detect Plasmodium falciparum and Plasmodium vivax. Results: Cattle blood meals were predominant (73%), followed by human (20%) and chicken (7%), with no dog blood meals detected. All individual mosquito samples were negative for Plasmodium falciparum, while two pooled samples (out of 191) tested positive for P. vivax. Conclusion: A. stephensi in Khyber District primarily displayed anthropophagic feeding behavior, with a small portion of the population infected with P. vivax. The results underscore the importance of targeted vector control strategies, environmental management, community engagement and continuous monitoring to suppress malaria transmission.
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- 2024
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37. A comprehensive survey on exploring and analyzing COVID-19 mobile apps: Meta and exploratory analysis
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Habib Ullah Khan, Yasir Ali, Muhammad Azeem Akbar, and Faheem Khan
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COVID-19 ,Coronavirus ,SARS-CoV-2 ,Mobile applications ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
During the current COVID-19 pandemic, many digital solutions around the world have been proposed to cope with the deadly virus but the role of mobile-based applications is dominant one. In Pakistan, during the current COVID-19 pandemic, an array of mobile health applications (apps) and platforms have been launched to grapple with the impacts of the COVID-19 situation. In this survey, our major focus is to explore and analyze the starring role of mobile apps based on the features and functionalities to tackle the COVID-19 disease, particularly in Pakistan. In this study, over fifty (50) mobile apps have been scrapped from the well-known three different sources i.e. Google Play Store, iOS Play Store, and web source. We developed our own data set after searching through the different play stores. We have designed two criteria such that the first criteria are known as eligibility criteria, while the second one is known as assessment criteria. The features and functions of each mobile app are pinpointed and discussed against the parameters of the assessment criteria. The major parameters of assessment criteria are: (i) Home monitoring; (ii) COVID-19 awareness; (iii) contact tracing; (iv) telemedicine; (v) health education; (vi) COVID-19 surveillance; (vii) self-assessment; (viii) security; and (ix) accessibility. This study conducted exploratory analysis and quantitative meta-data analysis by adopting PRISMA guidelines. This survey article is not only discussing the function and features of each COVID-19-centered app in Pakistan, but it also sheds light on the limitations of every mobile app as well. The results of this survey might be helpful for the mobile developers to review the current app products and enhance the existing mobile platforms targeted towards the COVID-19 pandemic. This is the first attempt of its kind to present a state-of-the-art survey of the COVID-19-centered mobile health apps in Pakistan.
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- 2024
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38. A comprehensive study on unraveling the advances of immersive technologies (VR/AR/MR/XR) in the healthcare sector during the COVID-19: Challenges and solutions
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Habib Ullah Khan, Yasir Ali, Faheem Khan, and Mugahed A. Al-antari
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COVID-19 ,Coronavirus ,SARS-CoV-2 ,Virtual reality ,Augmented reality ,Mixed reality ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
The current COVID-19 pandemic has affected almost every aspect of life but its impact on the healthcare landscape is conspicuously adverse. However, digital technologies played a significant contribution in coping with the challenges spawned by this pandemic. In this list of applied digital technologies, the role of immersive technologies in battling COVID-19 is notice-worthy. Immersive technologies consisting of virtual reality (VR), augmented reality (AR), mixed reality (MR), extended reality (XR), metaverse, gamification, etc. have shown enormous market growth within the healthcare system, particularly with the emergence of pandemics. These technologies supplemented interactivity, immersive experience, 3D modeling, touching sensory elements, simulation, and feedback mechanisms to tackle the COVID-19 disease in healthcare systems. Keeping in view the applicability and significance of immersive technological advancement, the major aim of this study is to identify and highlight the role of immersive technologies concerning handling COVID-19 in the healthcare setup. The contribution of immersive technologies in the healthcare domain for the different purposes such as medical education, medical training, proctoring, online surgeries, stress management, social distancing, physical fitness, drug manufacturing and designing, and cognitive rehabilitation is highlighted. A comprehensive and in-depth analysis of the collected studies has been performed to understand the current research work and future research directions. A state-of-the-artwork is presented to identify and discuss the various issues involving the adoption of immersive technologies in the healthcare area. Furthermore, the solutions to these emerging challenges and issues have been provided based on an extensive literature study. The results of this study show that immersive technologies have the considerable potential to provide massive support to stakeholders in the healthcare system during current COVID-19 situation and future pandemics.
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- 2024
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39. Machine learning‐assisted anomaly detection for power line components: A case study in Pakistan
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Abdul Basit, Habib Ullah Manzoor, Muhammad Akram, Hasan Erteza Gelani, and Sajjad Hussain
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computer vision and image processing ,image classification ,neural network ,power system analysis ,transmission lines ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Abstract A continuous supply of electricity is necessary to maintain an acceptable standard of life, and the power distribution system's overhead line components play a crucial role in this matter. In Pakistan, identifying defective parts often necessitates human involvement. An unmanned aerial vehicle was used to gather a collection of 10,343 photos to automate this procedure. Using supervised and unsupervised machine learning methods, a number of automated anomaly detection systems were created. Support vector machine, random forest, VGG16, and ResNet50 were used as supervised machine learning models, and a convolutional auto‐encoder was used as the unsupervised machine learning model. VGG16 achieved the best accuracy of 99.00% while random forest achieved the worst accuracy of 72.49%. The convolutional auto‐encoder was successful in distinguishing between normal and abnormal components. The aforementioned machine learning models can be put on unmanned aerial vehicles to immediately identify defective parts.
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- 2024
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40. Adjuvant Per-Operative Triamcinolone use in Lumbar Disc Surgery to Alleviate Post-Operative Pain
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Syed Adeel Ahmed, Habib Ullah Khan, Awais Ali Khan, Zahid Hussain, Asif Rasheed, and Babar Shamim
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Discectomy, Post-operative pain, Triamcinolone acetate ,Medicine ,Medicine (General) ,R5-920 - Abstract
Objective: To study the adjuvant per-operative epidural administration of Triamcinolone in lumbar disc surgery to alleviate post-operative pain. Study Design: Quasi-experimental study. Place and Duration of Study: Department of Neurosurgery, Combined Military Hospital, Rawalpindi Pakistan, from Oct 2021 to Sep 2022 Methodology: Hundred patients aged 20 to 80 years, of either gender, with a single-level prolapsed intervertebral disc and nerve root compression were included and underwent unilateral single-level decompression. A pre-operative MRI scan of the lumbo-sacral spine was done to confirm the diagnosis. All patients initially received conservative management (analgesics and physiotherapy) but failed to respond to it. They were divided into two groups by the lottery method. In Group A, an epidural steroid was administered, while Group B acted as the control. Pain was recorded pre-operatively at 24 hours and then at 1 and 2 weeks post-operatively using the Visual Analogue Scale. Results: The pre-operative median VAS of Groups A and B was not significant at pre-operation. After 24 hours of operation, the median VAS of Group A patients was VAS 3 (1), while in Group-B it was 2 (1), (p-value of 0.001). After 1 week, the median VAS of Group-A patients was 2 (2) and Group- B was 3 (1), with a significant p value of 0.024. After 2 weeks, the median VAS of Group-A patients was 1 (1) and Group B was 2 (1), with a significant p value of 0.015. Conclusion: Intra-operative epidural and foraminal administration of steroids in single-level lumbar disc surgery significantly reduce...
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- 2024
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41. Systematic review on evidence of the effectiveness of cholesterol-lowering drugs
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Gupta, Abhaya, Guyomard, Veronique, Zaman, M. Justin S., Rehman, Habib U., and Myint, Phyo Kyaw
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- 2010
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42. Deep Learning Based Models for Paddy Disease Identification and Classification: A Systematic Survey
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Mahrin Tasfe, Akm Nivrito, Fadi Al Machot, Mohib Ullah, and Habib Ullah
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Smart farming ,precision agriculture ,paddy disease detection ,paddy disease classification ,paddy disease segmentation ,deep learning ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Automated early detection and classification of paddy diseases help in applying treatment efficiently according to the detected diseases. Early detection also minimises the usage of chemical substances and pesticides and hinders the spread of the disease to healthy crops. On a broader scale, it aids in halting the global spread of diseases. Thus, it ultimately promotes healthier rice crops and increased yield. In this survey paper, we present a thorough exploration of deep learning (DL) models for the classification of paddy diseases. Our paper delves into the motivation behind this research study, reveals different paddy diseases and their associated symptoms, and unravels various deep-learning models employed for disease detection. We have also discussed strategies used by researchers for improving the performance of DL models, along with adaptations tailored for application-specific contexts. Additionally, we illustrate relevant research findings, explore datasets utilised in this domain, and analyse approaches for data augmentation. Through an exhaustive investigation, we emphasise existing research gaps, challenges, and open issues, concluding in a discussion on avenues for future exploration.
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- 2024
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43. New Dimensions for Physical Layer Secret Key Generation: Excursion Lengths-Based Key Generation
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Muhammad Adil, Habib Ullah Khan, Mohammad Arif, Mian Shah Nawaz, and Faheem Khan
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Secret key generation ,stochastic wireless channel ,quantization regions ,excursions ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Physical Layer-based Secret Key Generation (PLSKG) between the legitimate nodes from the reciprocal wireless channel is a vastly studied area of Physical Layer Security (PLS). PLSKG aims to secure the wireless link between the legitimate nodes by symmetrically encrypting the wirelessly transmitted information via a secret key that is extracted from the common randomness of the stochastic wireless channel. PLSKG encompasses the intermediate steps of channel sampling, quantization, information reconciliation, and privacy amplification. The PLSKG algorithms are evaluated in terms of quantifiers such as Key Generation Rate (KGR), Key Agreement Probability (KAP), and randomness. The practical PLSKG algorithms (level-crossing algorithms) extract a secret key by analyzing the channel samples and assigning bit sequences to the channel samples lying in different quantization regions. Level-crossing algorithms are lossy and extract a secret key from the central samples of matched excursions between the legitimate nodes. This results in a reduced KGR as there is a scarcity of such matched excursions considering the fast variations of the wireless link between the legitimate nodes. This paper proposes a Two-Round Channel Parsing (TRCP) algorithm that exploits the correlation between the excursion lengths of the channel samples in addition to the sample correlation. TRCP effectively utilize the channel samples by reducing the sample losses incurred by lossy quantizers exploring a new dimension of correlated excursions of the channel samples between legitimate nodes. Simulation results demonstrate that the proposed TRCP scheme enhances the KGR and KAP performance of the secret key and also passes the National Institute of Standards and Technology (NIST) test suite of randomness.
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- 2024
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44. Strong convergence for split variational inclusion problems under hybrid algorithms with applications
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Hasanen A. Hammad, Habib ur Rehman, and Doha A. Kattan
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Fixed point problem ,Split feasibility problems ,Variational inclusion problem ,Hilbert space ,Numerical experiment ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
In this article, we present two inertial modifications of regularized algorithms for the split variational inclusion problem (SVIP, for short) in real Hilbert spaces (RHSs). When the circumstances are right, strong convergence theorems are demonstrated. The major findings are used to solve the split minimization, split common fixed point problem (SCFPP), split minimization problem (SMP), and split feasibility problems (SFP) in applications. The proposed algorithms are contrasted with a number of other existing algorithms in the literature in order to test their numerical performances. Finally, the computer tests demonstrate that the suggested algorithms outperform alternative strategies in terms of speed and efficiency.
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- 2024
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45. ACUTE AND SUB-CHRONIC TOXICITY STUDIES OF THE METHANOL LEAF EXTRACT OF DALBERGIA SAXATILIS (HOOK. F) IN ALBINO RATS: 1128
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Hassan, Ismail F., Zezi, Umar A., Yaro, Hamza A., and Danmalam, Habib U.
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- 2014
46. Detrital zircon ages, provenance and tectonic evolution in the early Paleozoic of Tasmania and Waratah Bay, Victoria.
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Habib, U., Meffre, S., Berry, R., and Kultaksayos, S.
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ZIRCON , *PALEOZOIC Era , *PROVENANCE (Geology) , *SEDIMENTARY rocks , *PALEOGEOGRAPHY , *VOLCANOLOGY ,GONDWANA (Continent) - Abstract
The provenance of the upper Cambrian to Upper Ordovician sedimentary rocks of Tasmania and Waratah Bay in southern Victoria provides information about the complex and dynamic tectonic environment present during their deposition. This paper uses U–Pb detrital zircon data to constrain stratigraphic comparisons and tectonic reconstructions of these rock sequences. Multivariate statistics are used to investigate the similarity between the U–Pb ages and quantify the disparity among different samples from various locations. In western and central Tasmania, the Tyennan region supplied most detrital zircons during the late Cambrian and Early Ordovician. The overlying Middle Ordovician Pioneer Sandstone records a switch in provenance with zircons derived from the Mount Read Volcanics (MRV) mixed with zircons similar to those from continental-derived Paleozoic sedimentary rocks deposited throughout east Gondwana. The Middle to Upper Ordovician Gordon Group in western and central Tasmania lacks detrital zircons younger than 1.2 Ga, which indicates a return to a local provenance from Precambrian rocks. In southern Tasmania, the switch to zircons derived from the MRV and east Gondwana-like sources occurred earlier within the Cambrian Deadmans Bay Formation, which is dominated by the east Gondwana Paleozoic zircon age signature. In the East Tasmania Terrane, Ordovician sedimentary rocks from Lefroy have detrital zircon populations dominated by Neoproterozoic and earliest Paleozoic sources similar to the Ordovician sedimentary rocks in the Lachlan Orogen. In southern Victoria, the Bear Gully Chert from Waratah Bay exhibit both Tyennan and distal Gondwana detrital sources. The switching of detrital zircon sources in the west Tasmanian sedimentary sequences implies the docking of Tasmania with mainland Australia during the Cambrian Tyennan Orogeny. The arrival of the distal zircons into these basins occurred at different times in the different areas, reflecting a complex local topography and paleogeography. Paleozoic sedimentary rocks in Tasmanian exhibit multisource detrital U–Pb age signatures that change over time, implying tectonic activity during their deposition. Paleozoic sedimentary rocks in northeastern Tasmania show Gondwana-wide detrital signatures similar to Lachlan Orogen. The Ordovician Bear Gully Chert at Waratah Bay in southern Victoria shows mixed Tasmanian and distal Gondwana detrital populations. The change in detrital zircon signature in western Tasmania suggests that VanDieland docked with the Australian continent during the Cambrian Tyennan Orogeny. [ABSTRACT FROM AUTHOR]
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- 2022
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47. Supplementation of Selenium Nanoparticles-Loaded Chitosan Improves Production Performance, Intestinal Morphology, and Gut Microflora in Broiler Chickens.
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Khan, Imad, Zaneb, Hafsa, Masood, Saima, Ashraf, Saima, Rehman, Hafiz F., Tahir, Sajid K., Rehman, Habib U., Khan, Adnan, Taj, Raheela, Rahman, Sadeeq U., and Shah, Muqader
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BROILER chickens ,SELENIUM ,WEIGHT gain ,MORPHOLOGY ,MORPHOGENESIS ,CHICKS ,CHITOSAN - Abstract
The current study aimed to evaluate the efficacy of selenium nanoparticles (SeNPs), combined or loaded with chitosan (COS), in broiler chickens reared under standard management protocols. The parameters under investigation were production performance, organ development, components of the intestinal barrier, and ileal microbial count. Two hundred and forty day-old chicks were raised in five groups, with each group containing eight replicates (n=6/replicate). The control group received a basal diet whereas the other four groups received basal diets supplemented with SeNPs (0.5 mg/kg), COS (200 mg/kg), SeNPs+COS (0.5 mg/kg SeNPs + 200 mg/kg COS), and SeNPs-loaded COS (SeNPs-L-COS) (200 mg/kg) respectively. On day 35, two birds/replicate were sampled to collect the viscera under investigation. The results revealed that dietary inclusion of SeNPs-L-COS increased (p<0.05) the body weight gain and improved (p<0.05) feed conversion ratio. Similarly, SeNPs-L-COS supplementation increased (p<0.05) the small intestinal villus surface area as well as the count of acidic goblet cells and intraepithelial lymphocytes when compared with the control group. Whereas the total goblet cell count was higher (p<0.05) in the small intestines of both the SeNPs+COS and SeNPs-L-COS groups. Microbial analysis of ileal contents also revealed an increase (p<0.05) in Lactobacilli species count with a concurrent decrease (p<0.05) in Escherichia coli count in the SeNPs-L-COS group when compared with the COS and control groups. Based on the results of the current trial, we can conclude that supplementation with SeNPs-L-COS is a superior combination for promoting the gut health and performance of broilers. [ABSTRACT FROM AUTHOR]
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- 2022
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48. A Survey of Security Strategies in Federated Learning: Defending Models, Data, and Privacy
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Habib Ullah Manzoor, Attia Shabbir, Ao Chen, David Flynn, and Ahmed Zoha
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security ,federated learning ,attack ,defense ,Information technology ,T58.5-58.64 - Abstract
Federated Learning (FL) has emerged as a transformative paradigm in machine learning, enabling decentralized model training across multiple devices while preserving data privacy. However, the decentralized nature of FL introduces significant security challenges, making it vulnerable to various attacks targeting models, data, and privacy. This survey provides a comprehensive overview of the defense strategies against these attacks, categorizing them into data and model defenses and privacy attacks. We explore pre-aggregation, in-aggregation, and post-aggregation defenses, highlighting their methodologies and effectiveness. Additionally, the survey delves into advanced techniques such as homomorphic encryption and differential privacy to safeguard sensitive information. The integration of blockchain technology for enhancing security in FL environments is also discussed, along with incentive mechanisms to promote active participation among clients. Through this detailed examination, the survey aims to inform and guide future research in developing robust defense frameworks for FL systems.
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- 2024
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49. Effects of Hydraulic Retention Time on Removal of Cr (VI) and p-Chlorophenol and Electricity Generation in L. hexandra-Planted Constructed Wetland–Microbial Fuel Cell
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Tangming Li, Peiwen Yang, Jun Yan, Mouyixing Chen, Shengxiong You, Jiahuan Bai, Guo Yu, Habib Ullah, Jihuan Chen, and Hua Lin
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constructed wetland–microbial fuel cell ,configurations ,wastewater purification ,electricity generation ,Leersia hexandra Swartz ,hydraulic retention time ,Organic chemistry ,QD241-441 - Abstract
Hexavalent chromium (Cr (VI)) and para-chlorophenol (4-CP) are prevalent industrial wastewater contaminants that are recalcitrant to natural degradation and prone to migration in aquatic systems, thereby harming biological health and destabilizing ecosystems. Consequently, their removal is imperative. Compared to conventional chemical treatment methods, CW-MFC technology offers broader application potential. Leersia hexandra Swartz can enhance Cr (VI) and 4-CP absorption, thereby improving wastewater purification and electricity generation in CW-MFC systems. In this study, three CW-MFC reactors were designed with L. hexandra Swartz in distinct configurations, namely, stacked, multistage, and modular, to optimize the removal of Cr (VI) and 4-CP. By evaluating wastewater purification, electrochemical performance, and plant growth, the optimal influent hydraulic retention time (HRT) was determined. The results indicated that the modular configuration at an HRT of 5 days achieved superior removal rates and power generation. The modular configuration also supported the best growth of L. hexandra, with optimal photosynthetic parameters, and physiological and biochemical responses. These results underscore the potential of modular CW-MFC technology for effective detoxification of complex wastewater mixtures while concurrently generating electricity. Further research could significantly advance wastewater treatment and sustainable energy production, addressing water pollution, restoring aquatic ecosystems, and mitigating the hazards posed by Cr (VI) and 4-CP to water and human health.
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- 2024
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50. Computational Optimization for CdS/CIGS/GaAs Layered Solar Cell Architecture
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Satyam Bhatti, Habib Ullah Manzoor, Ahmed Zoha, and Rami Ghannam
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thin film solar cells ,solar energy ,photovoltaics ,computational optimization ,renewable energy ,Technology - Abstract
Multi-junction solar cells are vital in developing reliable, green, sustainable solar cells. Consequently, the computational optimization of solar cell architecture has the potential to profoundly expedite the process of discovering high-efficiency solar cells. Copper indium gallium selenide (CIGS)-based solar cells exhibit substantial performance compared to those utilizing cadmium sulfide (CdS). Likewise, CIGS-based devices are more efficient according to their device performance, environmentally benign nature, and thus, reduced cost. Therefore, the paper introduces an optimization process of three-layered n-CdS/p-CIGS/p-GaAs (NPP)) solar cell architecture based on thickness and carrier charge density. An in-depth investigation of the numerical analysis for homojunction PPN-junction with the ’GaAs’ layer structure along with n-ZnO front contact was simulated using the Solar Cells Capacitance Simulator (SCAPS-1D) software. Subsequently, various computational optimization techniques for evaluating the effect of the thickness and the carrier density on the performance of the PPN layer on solar cell architecture were examined. The electronic characteristics by adding the GaAs layer on the top of the conventional (PN) junction further led to optimized values of the power conversion efficiency (PCE), open-circuit voltage (VOC), fill factor (FF), and short-circuit current density (JSC) of the solar cell. Lastly, the paper concludes by highlighting the most promising results of our study, showcasing the impact of adding the GaAs layer. Hence, using the optimized values from the analysis, thickness of 5 (μm) and carrier density of 1×1020 (1/cm) resulted in the maximum PCE, VOC, FF, and JSC of 45.7%, 1.16 V, 89.52%, and 43.88 (mA/m2), respectively, for the proposed solar cell architecture. The outcomes of the study aim to pave the path for highly efficient, optimized, and robust multi-junction solar cells.
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- 2024
- Full Text
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