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Physical review / B 101(6), 064409 (2020). doi:10.1103/PhysRevB.101.064409, Simultaneous coexistence of room-temperature ferromagnetism and ferroelectricity in Fe-doped BaTiO$_3$ (BTO) is intriguing, as such Fe doping into tetragonal BTO, a room-temperature ferroelectric, results in the stabilization of its hexagonal polymorph which is ferroelectric only below ∼80K. Here, we investigate its origin and show that Fe-doped BTO has a mixed-phase room-temperature multiferroicity, where the ferromagnetism comes from the majority hexagonal phase and a minority tetragonal phase gives rise to the observed weak ferroelectricity. In order to achieve majority tetragonal phase (responsible for room-temperature ferroelectricity) in Fe-doped BTO, we investigate the role of different parameters which primarily control the paraelectric hexagonal phase stability over the ferroelectric tetragonal one and identify three major factors, namely the effect of ionic size, Jahn-Teller (JT) distortions, and oxygen-vacancies, to be primarily responsible. The effect of ionic size which can be qualitatively represented using the Goldschmidt's tolerance factor seems to be the major dictating factor for the hexagonal phase stability. The understanding of these factors not only enables us to control them but also to achieve a suitable codoped BTO compound with enhanced room-temperature multiferroic properties., Published by Inst., Woodbury, NY

Background: Obesity is described as a build-up of abnormal or excessive fat that risks life. A body mass index (BMI) is a screening tool for overweight and obesity. For a long time, BMI has been used as a marker to measure obesity. However, a significant limitation of using BMI is its failure to differentiate between a high body fat content and preserved or increased lean mass, especially in patients or subjects with a BMI

Synthetic molluscicides widely used for the control of urinary schistosomiasis are expensive, toxic to non-target organisms, not available and may have deleterious long-term effects in the environment. The aim of this research is to compare the efficacy of column purified fractions of Allium cepa and Allium sativum against Bulinus globosus specimens (intermediate host of urinary schistosomiasis) under laboratory conditions as an increment for the cheaper, non-toxic, available way of controlling urinary schistosomiasis. Extracts were obtained using cold maceration method with methanol as a polar solvent; column purification was achieved using silica gel (stationary phase) while ethyl acetate and n-hexane (mobile phase); thirteen fractions were collected from each plant and each fraction contained 10ml of the eluent; the fractions were left open for 48 hours for evaporation of the solvents. Experiments were performed according to the methodology described by the World Health Organization for molluscicidal activity tests; each treatment was replicated three times; mortality was recorded after each 24 hours up to 96 hours. The results showed that; A. sativum was more effective against B. globosus as compared with A. cepa with statistical significant difference (P

Potential of column purified fractions of Allium cepa bulb against intermediate hosts of urinary schistosomiasis (Bulinus globosus) was conducted in laboratory condition. The fresh bulbs of A. cepa were purchased from Ramin Kura market of Sokoto, identified and authenticated by a taxonomist. The bulbs were sliced into pieces, air dried and powdered. Extracts were obtained using methanol as polar then purified with silica gel as a stationary phase while N-hexane and ethyl acetate (1:1) as the mobile phase. Thirteen fractions each fraction containing 10 ml of the effluent was collected, the collected extracts were left open for evaporation for 48 hours. Ten adult B. globosus were immersed in 3liters of water containing different concentrations of the fraction and each treatment was replicated three times with control in the same condition without treatment, observations were recorded after 24 hours up to 96 hours. The toxicity experiment showed that fractions (F7, F8, F6 and F9) were most toxic fractions, LC50 after 96 hours was 19.371 mg/l. based on findings from this research it can be concluded that, A. Cepa was very potent and can be used for control of B. globosus in order to prevent urinary schistosomiasis infection in endemic areas and drugs industries may use the extracts of these plants for production of molluscicides.

PURPOSE: We investigated if substitutions in the ERCC1, ERCC2, and XRCC1 genes of the DNA repair pathway correlate with non-obstructive azoospermia and male infertility. METHODS: A total of 548 azoospermic infertile males and 410 fertile controls were genotyped for XRCC1 399A > G, 280G > A, and ERCC1 C > A 3′ UTR and 541 azoospermic infertile males and 416 fertile controls were genotyped for ERCC2 751A > C using iPLEX Gold Assay. Meta-analyses were performed on XRCC1 399A > G (1022 cases and 1004 controls), ERCC1 C > A 3′ UTR (879 cases and 1059 controls), and ERCC2 751A > C (914 cases and 850 controls) polymorphisms to quantitatively estimate the significance of the association between these polymorphisms and the risk of infertility. RESULTS: Statistically significant association between ERCC2 751A > C SNP and male infertility was found using the codominant model (p = 0.03). Results of meta-analysis suggested a lack of correlation with male infertility risk, which could be due to pooling of studies from different ethnic populations. Due to limited the number of studies, a stratified analysis for different ethnic groups could not be performed. CONCLUSION (S): In conclusion, AA genotype of 751A > C SNP in ERCC2 correlated with a higher risk of male infertility and may contribute to an increased risk of azoospermia and male infertility in Indian men. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s10815-018-1339-6) contains supplementary material, which is available to authorized users.

This article reports the thermodynamics and kinetics of keto-enol tautomerization in 1, 3, 5-triazin-2, 4(1H, 3H)-dione (R) and its tautomers at D ensity F unctional T heory (DFT) – B3LYP/6-311++G (d, p) level. In the chosen system, five keto-enol tautomerization reactions are possible namely R ↔ P1 (Channel 1), R ↔ P2 (Channel 2), R ↔ P3 (Channel 3), P3 ↔ P4 (Channel 4), and P1 ↔ P4 (Channel 5). The reactant has three pathways leading to three different tautomers (P1, P2, and P3). Both P1 and P3 can tautomerize to a fourth product P4 through two additional pathways. The four tautomers namely P1, P2, P3, and P4 are defined as 6-Hydroxy-1H-[1,3,5]Triazine-2-one, 4-Hydroxy-5H-[1,3,5]Triazine-2-one, 4-Hydroxy-1H-[1,3,5]Triazine-2-one, and [1,3,5]Triazine-2,4-diol, respectively. Conventional T ransition S tate T heory (TST) calculations were carried out to determine pre-exponential factor (A) and activation energy (Ea) of all the five tautomerization reactions. One of the hydrogens bonded to the 6th carbon atom (according to IUPAC nomenclature) of the tri-heterocyclic triazine system (R) was replaced by six substituents (F, Cl, OH, NH2, CH3, and C2H5) consecutively to understand their influence on the kinetics and thermodynamics of the tautomerization processes. All substituents investigated enhances the reaction rate constants of the first channel by reducing the barrier height, for example, ortho-para directing and activating substituent NH2 reduces it by 3.55 kcal mol−1. Application of Mulliken population analysis for the distribution of π electron density indicates that the electron donating OH, NH2, and C2H5 substituents increases the stability of TS’s for the third channel by enhancing the aromaticity of triazine ring which leads to increased rate constants.

Previous reports clearly suggest that IL-17 have important role in development of systemic and peripheral inflammation in early miscarriage (EM). In the present study, we have investigated the association between genetic variants in IL-17A, IL-17F and susceptibility to EM. We recruited 135 EM patients and 150 controls and used PCR-RFLP method for genotyping the polymorphisms of IL-17A, rs4711998 (−832 A/G), rs8193036 (−692C/T) and IL-17F rs763780 (7488 T/C). No significant difference was observed for all the three polymorphic sites between the EM patients and control group in terms of genotypic (rs4711998, χ2 = 1.95, p = 0.37; rs8193036, χ2 = 1.91, p = 0.38; rs763780, χ2 = 2.45, p = 0.29), and allelic frequencies (rs4711998, OR = 1.19, 95% CI = 0.84 to 1.67, p = 0.35; rs8193036,OR = 1.18, 95% CI = 0.58 to 2.06, p = 0.75; rs763780, OR = 1.5, 95% CI = 0.93 to 2.71, p = 0.11). Further, meta-analysis of IL-17F (rs763780) variant with EM also revealed non-significant association of IL-17F (rs763780) variant with EM in the presence of mutant genotype (CC) via random effect model (p = 0.70, OR = 1.30, 95% CI =0.33–5.11).

S100 proteins are calcium (Ca2+)-binding proteins and these have an important function in progression, manifestation and therapeutic aspects of various inflammatory, metabolic and neurodegenerative disorders. Based on their involvement in intracellular or extracellular regulatory effects, S100 proteins are classified into three subgroups: one subgroup is specialized in exerting only intracellular effects, other performs both intracellular and extracellular functions and the third subgroup members only display extracellular regulatory effects. S100 proteins are expressed particularly in vertebrates and have cell-specific expression. Functionally, S100 proteins act through their surface receptors and regulate cell functions in autocrine or paracrine mode. Receptor for advanced glycation end products (RAGEs) and toll-like receptor 4 are the main surface receptors. S100 proteins participate in the regulation of cellular differentiation, proliferation, apoptosis and inflammation along with Ca2+ homeostasis, energy metabolism and cellular migration, and perform the respective functions through their interaction with transcription factors, nucleic acids, enzymes, receptors, cytoskeleton system, etc. Currently, their role in adverse pregnancy outcomes and compromised reproductive health is being explored. These proteins are present in amniotic fluid, endometrium tissue and foetal brain; therefore, it is quite likely that alterations in the expression levels of S100 family members will be affecting the particular function they are involved in and ultimately affecting the pregnancy in adverse manner. The current review discusses about an association of S100 proteins in pregnancy disorders such as endometriosis, intrauterine growth retardation and miscarriage.

Investigation of essential technique to diminish the exceeded limit of fluoride in groundwater is the need of the hour due to severe adverse effects of fluoride on human health. The present study highlights the prospective of activated alumina, a defluoridating agent for the elimination of excess fluoride (F−) concentration from aqueous solution by using batch adsorption techniques. The adsorptive removal of fluoride was optimized by means of response surface methodology (RSM) considering the parameters in the range of pH (6-8), contact time (60-120 min), alumina dose (1-2 g), agitation speed (200-300 RPM), and temperature (25-45°C). The sorbent was instrumentally characterized to study the surface morphology and chemical composition by SEM (Scanning Electron Microscopy), EDX (X-ray Energy dispersive analysis) and XRD (X-ray Diffractometry). The optimized condition for the defluoridation procedure was obtained as pH 6, contact time 120 min, alumina dose 2 g, temperature 45°C, and agitation speed of 200 RPM gives 86.1% of fluoride removal. The equilibrium adsorption performances were studied and the data were fitted with both the Freundlich and Langmuir isotherms and showed Freundlich model was fitted well which signifies multilayer adsorption. The defluoridation method followed pseudo-second-order kinetics. Gibbs free energy showed that the process is feasible at all three operating temperatures. The statistical parameters proved the significance and applicability of the model for optimization of the defluoridation process using activated alumina as an adsorbent. Hence, alumina could be an eminent adsorbent for the defluoridation of wastewater. © 2017 American Institute of Chemical Engineers Environ Prog, 2017

Introduction: Iron deficiency anemia (IDA) is characterized by defect in the synthesis of hemoglobin leading to the poor delivery of oxygen to the cells and tissues expressing the clinical symptoms like lethargy, dizziness, shortness of breath and pale conjunctiva. Objectives: The present study is taken up to learn the levels of depression, anxiety, stress with IDA in females. The effect of IDA on cognitive skills was also studied. Methods: The present cross sectional study included thirty female participants with diagnosed iron deficiency anemia and thirty age matched controls, after obtaining voluntary, written informed consent. DASS-42 was used to assess depression, anxiety and stress. Spatial and verbal memory test was used to assess spatial and verbal memory test. Results: We have observed higher levels of depression, anxiety and stress and decreased spatial memory scores in females with iron deficiency anemia. Conclusion: We recommend further detailed studies in this area to explore the association of iron status with stress and cognition for planning better treatment options for the benefit of the patients.

Agriculture has played and will continue to play a dominant role in the growth of Indian economy in the foreseeable future. It represents the largest sector producing around 28 per cent of the GDP, is the largest employer providing more than 60 per cent of the jobs and is the prime arbiter of living standards for seventy per cent of India's population living in the rural areas. In some of the temperate regions where the climatic conditions are extremely adverse and no crops can be grown, man has developed methods of growing some high value crop continuously by providing protection from the excessive cold, which is called as polyhouse technology. With the polyhouse technology, farmers can grow almost any fruits, ornamentals and vegetables in any season. This technology has made possible to have all vegetables throughout the year. According to study, in Haryana state 620 different types of polyhouses were found including 7-Hi-Tech, 50-WIT, 106-AINSH and 457-NVPH. The total number of polyhouses in Haryana are 614 with covered area of 17,57,920 m 2 . In Haryana, 1,956 people were found to be engaged in polyhouse farming.

Structural, dielectric and ferroelectric measurements of polycrystalline BaTi 1 − x Sn x O 3 (x=15%) are reported. Detailed temperature dependent dielectric, x-ray diffraction and ferroelectric loop (P-E) measurements indicate the sequence of paraelectric and phase coexistence (ferroelectric and relaxor) phase as a function of lowering temperature. Hysteresis behavior observed in maximum polarization is envisaged as the signature of disorder induced first order phase transition in the phase co-existence region. The evidence for the possibility of tuning phase fraction in the phase co-existence region with electric field as a variable similar to that of magnetic materials with magnetic field is reported.

The success of pregnancy depends mostly on a synchronized immune-endocrine crosstalk at the maternal-fetal interface. Hormones are important in terms of maintaining the suitable environment and sufficient nutrition for the developing fetus. They also play a major role during the process of parturition and lactation. Maternal immunomodulation is important for the tolerance of semiallogeneic fetus. This is achieved in concert with a variety of endocrine stimulation. Estrogen, progesterone, and Human Chorionic Gonadotropin play a major role in immune modulation during pregnancy. Hormones modulate B cells, dendritic cells, uterine natural killer cells, macrophages, neutrophils to adopt fetal friendly immune phenotypes. Recently the use of hormones in assisted reproductive technology has been found to improve the pregnancy outcome. The present review focuses on the pregnancy-related hormones, their role in immunomodulation for successful pregnancy outcome. This also shed light on the immune-endocrine crosstalk at maternal-fetal interface during pregnancy.

The temperature dependent neutron powder diffraction (NPD) and magnetization measurements of vanadium based garnet Ca 5 Ni 4 V 6 O 24 (CNVO) have been performed to explore its crystal and magnetic structures. The magnetization results illustrate two magnetic anomalies at 7 and 4 K. The Rietveld analysis of room temperature x-ray diffraction and NPD data confirms its Ia -3 d crystal structure. The temperature dependent NPD shows the emergence of magnetic reflections below 7 K whose intensity keeps on increasing with decreasing temperature down to 1.5 K. The crystal structure remains cubic down to 1.5 K. Rietveld analysis reveals that below 7 K, the Ni moments in CNVO undergo a commensurate collinear A-type antiferromagnetic ordering with propagation vector k =(0,0,0) and the per site ordered moment of Ni 2+ is 1.69±0.05 μ B . Absence of any additional magnetic or nuclear reflections below 4 K confirms that the nuclear and magnetic structures remain invariant across the 4 K magnetic anomaly.

Despite significant interest in understanding the role of the local dielectric environment and lipid-bilayer fluidity/rigidity in resonance energy transfer between chromophores at lipid/water interfaces, a comprehensive approach to quantify such environmental dependence on energy transfer is missing – primarily because of the scarcity of suitable probes. Here we present the results on multi-chromophoric Forster resonance energy transfer (FRET) from a series of 4-aminophthalimide-based molecules (4AP-Cn; n = 2–10, 12) of different lipophilicity (donors), which reside at different depths across the lipid/water interfaces, to rhodamine-6G (Rh6G; acceptor) molecules that stay in a water-rich region near the lipid headgroups. We apply steady-state and time-resolved fluorescence spectroscopy, and find that multi-chromophoric FRET from the series of 4AP-Cn donors to the Rh6G acceptor occurs in a peculiar stepwise fashion at the lipid/water interface of a gel-phase (Lβ′) DPPC (1,2-dipalmitoyl-sn-glycero-3-phosphocholine) bilayer at room temperature. However, the same donor–acceptor pairs show only subtle but continuous donor-depth-dependent FRET at the lipid/water interface of a fluid-phase (Lα) DOPC (1,2-dioleoyl-sn-glycero-3-phosphocholine) bilayer. These features were found to correlate with the lipid-phase dependent local environmental polarity sensed by 4AP-Cn donors at the interfaces. Molecular dynamics (MD) simulations, combined with experimental results, show that relative depth (and angle) variation of the 4AP-Cn donors and Rh6G acceptor directly controls the FRET efficiencies through fine tuning of the emission and absorption spectra of the donors and acceptor, respectively. The results indicate that the 4AP-Cn probes are well-suited as donors for FRET studies, which allow the FRET parameters at lipid/water interfaces of gel- and fluid-phases of lipid-bilayers to be quantified and compared simultaneously.

PROBLEM Vitamin D is well-known for having anti-inflammatory and immunomodulatory properties. Impaired maternal vitamin D status has been known to increase the risk of adverse pregnancy outcomes like pre-term birth. The present study aims to evaluate the impact of fetal cord serum 25-hydroxyvitamin D-mediated signaling in mediating inflammatory responses in placenta during pre-term birth. METHOD OF STUDY For the above purpose, cord serum 25 hydroxyvitamin D 25(OH)D were measured in term (n = 20) and pre-term (n = 20) born babies using ELISA. Vitamin D downstream signaling has also been checked in placenta (VDR, CYP27B1, cathelicidin LL37) along with expression of inflammatory markers (S100A8, HMGB1, TLR2, p-NF-kappaB) using Western blotting and immunohistochemistry. Pearson correlation model was used to do correlation study. RESULTS Compared with term born babies (59.31 ± 3.476), decline in cord serum 25(OH)D levels is observed in pre-term born babies (22.26 ± 1.083, P =

S100 proteins are calcium (Ca2+)-binding proteins and these have an important function in progression, manifestation and therapeutic aspects of various inflammatory, metabolic and neurodegenerative disorders. Based on their involvement in intracellular or extracellular regulatory effects, S100 proteins are classified into three subgroups: one subgroup is specialized in exerting only intracellular effects, other performs both intracellular and extracellular functions and the third subgroup members only display extracellular regulatory effects. S100 proteins are expressed particularly in vertebrates and have cell-specific expression. Functionally, S100 proteins act through their surface receptors and regulate cell functions in autocrine or paracrine mode. Receptor for advanced glycation end products (RAGEs) and toll-like receptor 4 are the main surface receptors. S100 proteins participate in the regulation of cellular differentiation, proliferation, apoptosis and inflammation along with Ca2+ homeostasis, energy metabolism and cellular migration, and perform the respective functions through their interaction with transcription factors, nucleic acids, enzymes, receptors, cytoskeleton system, etc. Currently, their role in adverse pregnancy outcomes and compromised reproductive health is being explored. These proteins are present in amniotic fluid, endometrium tissue and foetal brain; therefore, it is quite likely that alterations in the expression levels of S100 family members will be affecting the particular function they are involved in and ultimately affecting the pregnancy in adverse manner. The current review discusses about an association of S100 proteins in pregnancy disorders such as endometriosis, intrauterine growth retardation and miscarriage.

The prognosis in breast cancer is worse in younger patients, invasive papillary, classic lobular and medullary cancers, tumors more than 1 cm in diameter, four or more positive axillary node and es...

After Salmonella is phagocytosed, it resides in an acidic vacuole. Its cytoplasm acidifies to pH 5.6; acidification activates pathogenicity island 2 (SPI-2). SPI-2 encodes a type three secretion system whose effectors modify the vacuole, driving endosomal tubulation. Using super-resolution imaging in single bacterial cells, we show that low pH induces expression of the SPI-2 SsrA/B signaling system. Single particle tracking, atomic force microscopy, and single molecule unzipping assays identified pH-dependent stimulation of DNA binding by SsrB. A so-called phosphomimetic form (D56E) was unable to bind to DNA in live cells. Acid-dependent DNA binding was not intrinsic to regulators, as PhoP and OmpR binding was not pH-sensitive. The low level of SPI-2 injectisomes observed in single cells is not due to fluctuating SsrB levels. This work highlights the surprising role that acid pH plays in virulence and intracellular lifestyles of Salmonella; modifying acid survival pathways represents a target for inhibiting Salmonella., eLife digest Salmonellae are a group of bacteria that can cause vomiting and diarrhea if we consume contaminated food. Once in the bowel, the bacteria get inside our cells, where they stay in a compartment called the vacuole. This environment is very acidic, and the inside of the microbes also becomes more acidic in response. This change helps Salmonella to switch on genes that allow them to survive and infect humans, but it is still unclear how this mechanism takes place. To investigate this question, Liew, Foo et al. harnessed a recent technique called super-resolution imaging, which lets scientists see individual molecules in a cell. First, the technique was used to count a protein called SsrB as well as the enzyme that activates it, SsrA. The role of SsrB is to bind to DNA and turn on genes involved in making proteins that help Salmonella thrive. These studies revealed that the levels of SsrA/B proteins increased three-fold in an acidic environment. Then, Liew, Foo et al. followed SsrB inside cells, knowing that fast-moving particles are free in solution, while slow-moving particles are typically bound to DNA. In acidic conditions, the proportion of SsrB bound to DNA doubled. Finally, further experiments revealed that when the environment was acidic, SsrB became five times more likely to bind to DNA. Taken together, the results suggest that acidic conditions trigger a cascade of events which switch on genetic information that allows Salmonella to survive. If SsrB could be prevented from responding to acid stress, it could potentially stop Salmonella from surviving inside host cells. This knowledge should be applied to drive new treatment strategies for Salmonella and other microbes that infect human cells.

Non-stoichiometric nickel oxide was synthesized by solid state route method at different sintering temperatures upto 1100 °C. The structure of synthesized compounds were analyzed by X ray diffraction analysis (XRD) and the dielectric constant was found to different for samples of different stoichiometry. These results were interpreted as the decomposition temperature increases, which heals the defects present in the non-stoichiometric nickel oxide and loss peak shifts to the higher frequency which is due to long range hopping of charge carriers.

The temperature dependent dielectric and ferroelectric properties of polycrystalline Ba1-xCaxTiO3 (x=0.08) have been investigated. Our temperature dependent complex dielectric measurement confirms that Ba0.92Ca0.08TiO3 (BCTO) undergoes three frequency independent transitionswith thermal hysteretic behavior in the temperature range 120to 410 K. These transitions correspond to cubic to tetragonal, tetragonal to orthorhombic and orthorhombic to rhombohedral transitions at 403, 228 and 132 K (during cooling), respectively. The P-E loops across each transition confirm the ferroelectric nature of the studied sample. The remnant polarization is maximum in rhombohedral phase. Interestingly, the value of dielectric constant and remnant polarization enhanced as compared to un-doped BaTiO3. We have also explored the effect of dc bias field on these transitions and found that in the presence of dc field all three transitionsare shifted towards higher temperature.

The compound CaBaCo4O7 is extensively studied for its magnetic and magnetoelecric coupling. We have explored the effect of oxygen stoichiometry on the structural, magnetic and complex capacitance behavior. The oxygen content in this cobalt oxide have been evaluated using iodometric titration. We found that oxygen stoichiometry has significant effect on the magnetic and electric properties in CaBaCo4O7. The oxygen excess CaBaCo4O7 shows two magnetic transition one around 54 K and another around 86 K as compared to one transition in oxygen stoichiometric sample. Corresponding to 86 K magnetic transition, a frequency independent transition is observed in the capacitance vs temperature plot which infer that magnetoelectric coupling is strongly depend on oxygen stoichiometry.

The study was conducted in poor communities, where most of the population is dependent on river and well for their everyday activities. In this study 5 years–15 years aged children were sampled for schistosomiasis (Urinary and intestinal), using of urine and stool samples. The stool samples were analyzed using kato-katz thick faecal smear technique while the urine samples were analyzed by filtration technique. The overall prevalence of urinary schistosomiasis ( Schistosoma haematobium ) was 60.8% (228 positive cases in 375 samples), and for intestinal schistosomiasis ( Schistosoma mansoni ) was 2.93% (11 positive in 375 samples). The order of infection based on social status (occupation of pupil's parents) was farmers > fishermen > traders > civil servents > others. The prevalence of infection based on pupil's water contact activities such as farming associated 84.87% urinary schistosomiasis, followed by swimming (78.21%). Occurrence of urinary schistosomiasis based on source of pupil's drinking water; highest infection was reported among those that drink dam water (75.24%) while least infection was occurred whose drinking water was from bore-whole (17.64%). Prevalence of urinary schistosomiasis in the studied area is therefore very high and family status, means of water contact and availability of drinking water dependent. Therefore there is urgent need to adapt preventive measures, provision of safe drinking water as well as control programmes for vector snails, immediately.

In present paper non similar solutions for plane, cylindrical and spherical unsteady flows of non-ideal gas behind shock wave of arbitrary strength initiated by the instantaneous release of finite energy and propagating in a non-ideal gas is investigated. Asymptotic analysis is applied to obtain a solution up to second order. Solution for numerical calculation Runga-Kutta method of fourth order is applied and is concluded that for non-ideal case there is a decrease in velocity, pressure and density for 0th and IInd order in comparison to ideal gas but a increasing tendency in velocity, pressure and density for Ist order in comparison to ideal gas. The energy of explosion J0 for ideal gas is greater in comparison to non-ideal gas for plane, cylindrical and spherical waves.

We have investigated the complex dielectric and impedance properties of magnetoelectric compound Fe2TiO5 (FTO) as a function of temperature (T) and frequency (f) to understand the grain (G) and grain boundary (Gb) contributions to its dielectric response. The temperature and frequency dependent dielectric permittivity data shows a sharp increase in permittivity above 200K accompanied with a frequency dependent peak in loss. At T less than 175K, only G contribution dominates even at lower frequency (nearly 100Hz), but for T greater than 175K, the Gb contribution starts appearing at low frequency. The value of critical frequency distinguishing these two contributions increases with increasing temperature. The observed non-Debye dielectric relaxation follows thermally activated process and is attributed to polaron hopping. Further the frequency dependence of ac conductivity follows the Jonscher power-law. The temperature dependency of critical exponent s shows that the correlated barrier hopping model is appropriate to define the conductivity mechanism of FTO in the studied temperature regime., 16 pages, 6 figures, Accepted in Journal of alloys and compounds

There are many socio-demographic risks factors for pulmonary tuberculosis. However there are limited studies done in Delhi. The objective of the study to determine the socio-demographic risk factors associated with confirmed TB patients registered in Dots centre of Delhi. Method this was hospital based study a case was defined as individual 17- 20 years. Then 21-55 years age group has clubbed. Results Occupational levels of the subjects indicate that in settled population males are involved in private jobs 48.6%. While 55% females are house wives, 26.1% males are self-employed, 24.5 % females are students in settled population. Similarly in migrated population 58.7% males are in private jobs and 26.4 % are students and 70.5 % females are house wives and 15.4 % females are students.

A new series of Co(II), Ni(II), Cu(II) and Zn(II) complexes were prepared with bidentate ligand derived by condensation of 4-amino-3-mercapto-6-methyl-5-oxo-1,2,4-triazine with 3-(p-bromophenyl)-1-phenyl-1H-pyrazolecarboxaldehyde. The Schiff base and its metal complexes were characterized on the basis of various spectroscopic investigation like IR, NMR, fluorescence and thermal analyses. The coordinated water molecules were confirmed by IR and thermal data, while the geometry of the complexes was confirmed by electronic spectra, magnetic moment measurements and ESR analysis. Cyclic voltammetry shows the redox behavior of copper complexes. All the complexes were colored, stable in air and non-electrolytic in nature. Schiff base and its metal complexes were screened for in vitro antimicrobial activity and it was observed that metal complexes show enhanced biological activity as compared to ligand or metal salts. In addition, Zn(II) complexes show enhanced biological activity against most of the microbial strains as compared to ligand and other metal complexes.

This paper presents the stability analysis of a six-phase self-excited induction generator (SP-SEIG) based on the eigenvalue stability criteria for its linearized model. This demonstrates the small signal stability behavior during steady-state operating conditions. The eigenvalue approach also establishes an opportunity to correlate eigenvalues with machine parameters. The investigation in this paper reveals that the eigenvalues are dependent upon the machine parameters, and the most critical parameter is the variation in magnetizing inductance (L$_{m})$. The eigenvalues are varied in accordance with the machine variables and give focus to the stabilization of the SP-SEIG. A particular voltage build-up phenomenon is also experimentally verified to validate the proposed analytical approach in this paper.