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1,122 results on '"Alotaibi, Abdullah"'

153. The association between pruritus and dietary intake among hemodialysis adult patients and its relation to laboratory findings, in Jeddah, Saudi Arabia

Author

Kashgary, Abdullah Y, primary, Abdelsalam, Mostafa, additional, Alamri, Bader M, additional, Aboalola, Abdulrahman B, additional, Alghorair, Abdullah S, additional, Alasiri, Meshal M, additional, Shikdar, Mohammad A, additional, Alotaibi, Abdullah F, additional, Alhomrani, Mohammed H, additional, and Shafi, Reham W, additional

Published
2023
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159. Epidemiological Characteristics, Pathogenesis and Clinical Implications of Sinusitis in the Era of COVID-19: A Narrative Review

Author

N Al‐Rasheedi, Abdullah, primary, D Alotaibi, Abdullah, additional, Alshalan, Afrah, additional, Muteb Alshalan, Khalid, additional, Muharib R Alruwaili, Khalid, additional, Hamdan R Alruwaili, Abdulelah, additional, Talal Alruwaili, Abdulaziz, additional, Abdulhamid Alanazi, Abdualaziz, additional, Khalid Alshalan, Mohammed, additional, and Fahid ALtimani, Abdullah, additional

Published
2023
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164. Structural Phase Modulation in Lanthanum‐ and Tin‐Cosubstituted Pb(Zr,Ti)O 3 Ceramics and its Energy and Pyroenergy Storage Properties

Author

Kandula, Kumara Raja, primary, Shet, Tukaram, additional, Nuthalapatib, Mohan, additional, Koneti, Lokeswara Rao, additional, Ansari, Anees A., additional, Alotaibi, Khalid M., additional, Alotaibi, Abdullah A., additional, Atragada, Chitti Babu, additional, Nelaturi, Narasimha Rao, additional, Vadnala, Sudharshan, additional, Shankar, Jakkula, additional, Paritala, Raghava Rao, additional, and Bhimireddi, Rajasekhar, additional

Published
2022
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168. The role of sterilization in health centers and its impact on the nature of work

Author

Faggeha, Hassan Y, primary, Fageha, Mohammed Y, additional, Alrobei, Emad K, additional, Alshamrani, Hamda A, additional, Algothami, Rabee O, additional, Alotaibi, Nahiyah R, additional, Alshabani, Mohammed E, additional, Alzahrani, Abdullwahab S, additional, Althagafi, Faisal A, additional, Alqurashi, Mohsen M, additional, Alotaibi, Abdullah K, additional, Bresali, Samar O, additional, Felemban, Adel A, additional, Alzahrani, Mansour A, additional, Alzahrani, Abdullah H, additional, and Alsubhi, Abdulaziz A, additional

Published
2022
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170. A New Zn(II) Metal Hybrid Material of 5-Nitrobenzimidazolium Organic Cation (C7H6N3O2)2[ZnCl4]: Elaboration, Structure, Hirshfeld Surface, Spectroscopic, Molecular Docking Analysis, Electric and Dielectric Properties

Author

Ayari, Chaima, primary, Alotaibi, Abdullah A., additional, Baashen, Mohammed A., additional, Perveen, Fouzia, additional, Almarri, Abdulhadi H., additional, Alotaibi, Khalid M., additional, Abdelbaky, Mohammed S. M., additional, Garcia-Granda, Santiago, additional, Othmani, Abdelhak, additional, Nasr, Cherif Ben, additional, and Mrad, Mohamed Habib, additional

Published
2022
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171. A Novel Study Based on Fuzzy p-Ideals of BCI-Algebras

Author

Muhiuddin, G., Abughazalah, Nabilah, Mahboob, A., Elnair, M. E., and Alotaibi, Abdullah G.

Abstract

In this paper, we propose the concept of ∈,∈∨j∗,qj-fuzzy p-ideals in “BCI-algebras.” We show that “∈,∈∨q-fuzzy p-ideals” and “∈∨j∗,qj,∈∨j∗,qj-fuzzy p-ideals” are “∈,∈∨j∗,qj-fuzzy p-ideals.” However, the converse is not true, then presented examples. For a BCI-algebra Y^, it has been shown that every ∈,∈∨j∗,qj-fuzzy p-ideal of Y^ is an ∈,∈∨j∗,qj-fuzzy ideals of Y^but not conversely, and then, an example is given. Furthermore in Y^, a connection between ∈,∈∨j∗,qj-fuzzy p-ideals and p-ideals is established.

Published
2023
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177. Assessment of knowledge and awareness of Saudi general population in Taif regarding Irritable Bowel Syndrome and its causes, symptoms, and risk factors

Author

Baiuomy, Ayman Ragab, primary, Alsuwat, Abdulaziz Obaidallah F, additional, Alotaibi, Abdullah Obaid, additional, Althobaiti, Fahad Sami Mesfer, additional, Alosaimi, Khalid Saad, additional, Almutawa, Khaled Nasser, additional, Algarni, Faisal Abdullah A, additional, Alharthi, Abdulrahman Awadh E, additional, Alosaimi, Majed Adel N, additional, and Alharthi, Khalid Awwadh S, additional

Published
2022
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185. Polyaniline/banana peel composite: an eco-friendly adsorbent for removal of dihydrogen phosphate from groundwater.

Author

Alotaibi, Abdullah A., Alharbi, Abdulrahman F., Ibrahim, Ahmed M.H., and Azeem, Sami M. Abdel

Subjects
POLYANILINES, BANANAS, GROUNDWATER, AGRICULTURAL wastes, LANGMUIR isotherms, PHOSPHATES, ADSORPTION capacity
Abstract

A low-cost polyaniline/banana peel (PAni/BP) composite was prepared by oxidative polymerization of aniline in the presence of agricultural waste BP powder and characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, and Brunauer-Emmett-Teller. The surface area and average pore width were 5.65 m2·g-1 and 61.2 nm, respectively. A maximum adsorption capacity of 56.8 mg·g-1 and more than 90% removal of 5.0 mg·L-1 phosphate, were achieved under optimized conditions. Phosphate adsorption is best described by the pseudo-second-order and Langmuir isotherm models. The Temkin isotherm gave an 8.2 J·mol-1 B constant, while the Dubinin-Radushkevich isotherm produced 14.1 kJ·mol-1 adsorption energy; both of them supported the chemisorption process. Thermodynamic parameters showed that the phosphate adsorption process was endothermic and spontaneous. For spiked groundwater, removal ranged between 90% and 95%, while desorbed phosphate removal ranged from 83% to 100%, with a relative standard deviation ranging from 2.0% to 7.4%. [ABSTRACT FROM AUTHOR]

Published
2023
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186. Facile synthesis of Cu0.9Co0.1−xSnxO nanostructures and their structural, optical and dielectric properties for optoelectronic applications.

Author

Althobaiti, M. G., Alotaibi, Abdullah A., Alharthi, Sami S., and Badawi, Ali

Abstract

The structural, linear/nonlinear optical and dielectric properties of Cu0.9Co0.1−xSnxO (CCTO) nanostructured films have been studied for optoelectronic applications. CCTO films with different compositions were equipped by spray pyrolysis procedure. The structure, crystallographic and morphological properties were examined by FT-IR, XRD and SEM procedures. The FT-IR measurements expose clear alterations in the structures of CCTO films due to composition variation. XRD results reveal that all CCTO nanostructured films have the monoclinic structure with crystallite size changes from 24.2 to 18.7 nm. SEM micrographs show that CCTO films possess high porous surfaces. UV–Vis. NIR measurements are used to investigate the linear/nonlinear optical parameters of prepared films. The UV–Vis–NIR analysis reveals that all films have absorption coefficient values with orders range from 104 to 105 cm−1. The energy band gap Eg of CCTO films ranges from 1.24 to 1.14 eV upon varying x value. These findings are discussed on the basis of Moss Burstein effect and created defects. Clear impact of the composition (x) on the linear optical properties of CCTO is noticed. For example, the real dielectric constant εr varies from 23.97 to 9.74 via controlling the content composition. Moreover, the linear and nonlinear susceptibility and refractive index of CCTO films have been examined. This study proposes CCTO nanostructured films of environmentally friendly applications as photocatalysts, solar cells, optoelectronics and ultra-fast optical switching devices. [ABSTRACT FROM AUTHOR]

Published
2023
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187. Focusing on summer setpoint temperature to intensify PCM effectiveness in building: energy saving in Jeddah climate.

Author

Khetib, Yacine, Alotaibi, Abdullah Alhumaidi, Alshahri, Abdullah H., Kalbasi, Rasool, Sajadi, S. Mohammad, and Sharifpur, Mohsen

Subjects
*THERMAL resistance, *HEATING, *HEAT transfer, *TEMPERATURE, *ENERGY consumption, *SUMMER
Abstract

Considering the 66% share for cooling and 3% for building heating in Saudi Arabia, the effect of PCM on reducing energy consumption by focusing on summer setpoint temperatures (ST summer) was examined. A 2 cm layer of RT-25HC (22–26 ° C) was added to the wall and ceiling with thermal resistances of 0.723 and 1.057 m 2. K W. At ST summer = 22 ° C , RT-25HC resulted in an energy saving of 8.12 kWh m 2 . As ST summer increases to 25 ° C , the energy saving reaches 55.54 kWh m 2 (maximum value). A further increase in ST summer reduces energy saving to 39.69 kW (at 27 ° C). In this study, the effects of RT-25HC thickness were also discussed and it was observed that thickness increasing had undesirable results. The presence of RT-25HC increases the thermal resistance, hence reduces the heat exchange, if PCM does not undergo the phase change. If RT-25HC has a phase change, increasing its thickness boots heat transfer which is not advantageous. However, at thickness 3 cm, RT-25HC is still useful, and under the best conditions, energy saving was 41.1 kWh m 2 . [ABSTRACT FROM AUTHOR]

Published
2023
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188. Tailoring the structural and optical characteristics of hematite (α-Fe2O3) nanostructures by barium/aluminum dual doping for eco-friendly applications.

Author

Badawi, Ali, Alharthi, Sami S., Alotaibi, Abdullah A., and Althobaiti, M. G.

Subjects
HEMATITE, BARIUM, PERMITTIVITY, OPTICAL conductivity, REFRACTIVE index, OPTICAL constants, MOSSBAUER spectroscopy
Abstract

In the current work, the structural and optical characteristics of hematite (α-Fe2O3) have been tailored by individual and dual doping of Ba and Al for photocatalytic and eco-friendly applications. The doped and undoped hematite nanostructures were synthesized onto quartz substrates via the spray pyrolysis route. The surfaces' morphology, vibrational bands and structural properties were investigated based on FE-SEM, FT–IR and XRD measurements, respectively. The XRD analysis reveals that all samples have a rhombohedral hematite structure. The crystallite size varies from 20.8 nm (undoped hematite) to 27.6 nm (Ba-doped hematite), 24.3 nm (Al-doped hematite) and 22.8 nm (Ba/Al dual doped hematite). The optical transmittance, absorbance and reflectance spectra were recorded by a UV–Vis–NIR spectrophotometer. The UV–Vis–NIR analysis shows that Ba/Al dual doped hematite film possesses an optimal absorption amount in the region where the wavelength λ > 561 nm. The direct energy band gap (Eg) changes from 2.30 eV (undoped hematite) to 2.42 eV nm (Ba-doped hematite), 2.18 eV nm (Al-doped hematite) and 2.22 eV nm (Ba/Al dual doped hematite). Clear enhancement in the refractive index (n), dielectric constants and optical conductivity of the hematite NPs is attained via individual or dual doping of Ba and Al elements. For example, at λ = 550 nm, n of the undoped hematite increases from 1.88 to 1.91 (Ba-doped hematite), 2.07 (Al-doped hematite) and 1.97 (Ba/Al dual doped hematite). These novel results nominate the individual Ba, Al and Ba/Al dual doped hematite NPs for applications in photocatalysts and eco-friendly devices. [ABSTRACT FROM AUTHOR]

Published
2023
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196. Thiazole: A Versatile Standalone Moiety Contributing to the Development of Various Drugs and Biologically Active Agents

Author

Arshad, Mohammed F., primary, Alam, Aftab, additional, Alshammari, Abdullah Ayed, additional, Alhazza, Mohammed Bader, additional, Alzimam, Ibrahim Mohammed, additional, Alam, Md Anish, additional, Mustafa, Gulam, additional, Ansari, Md Salahuddin, additional, Alotaibi, Abdulelah M., additional, Alotaibi, Abdullah A., additional, Kumar, Suresh, additional, Asdaq, Syed Mohammed Basheeruddin, additional, Imran, Mohd., additional, Deb, Pran Kishore, additional, Venugopala, Katharigatta N., additional, and Jomah, Shahamah, additional

Published
2022
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