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Virial Coefficients from Unified Statistical Thermodynamics of Quantum Gases Trapped under Generic Power Law Potential in d Dimension and Equivalence of Quantum Gases

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Communications in Theoretical Physics 2016年第9期65卷 291-296页

作者： shah Mohammad Bahauddin Mir Mehedi Faruk Physics and Astronomy Rice University Houston USA Theoretical Physics Blackett Laboratory Imperial College London SW7 2AZ United Kingdom Department of Theoretical Physics University of Dhaka Dhaka-1000 Banglagesh

From the unified statistical thermodynamics of quantum gases, the virial coefficients of ideal Bose and Fermi gases, trapped under generic power law potential are derived systematically. From the general result of virial coefficients, one can produce the known results in d = 3 and d = 2. But more importantly we found that, the virial coefficients of Bose and Fermi gases become identical(except the second virial coefficient, where the sign is different)when the gases are trapped under harmonic potential in d = 1. This result suggests the equivalence between Bose and Fermi gases established in d = 1(J. Stat. Phys. DOI 10.1007/s10955-015-1344-4). Also, it is found that the virial coefficients of two-dimensional free Bose(Fermi) gas are equal to the virial coefficients of one-dimensional harmonically trapped Bose(Fermi) gas.

关键词： virial coefficients quantum gas equivalence

CBMO Estimates for Multilinear Hardy Operators

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Acta Mathematica Sinica,English Series 2010年第7期26卷 1245-1254页

作者： shah Zhen LU Fa You ZHAO School of Mathematical Sciences Beijing Normal University Beijing 100875 P. R. China

The purpose of this paper is to study the multilinear Hardy operators in higher dimensional cases and establish the CBMO estimates for multilinear Hardy operators on some function spaces, such as the Lebesgue spaces, ... 详细信息

关键词： multilinear Hardy operator central BMO space Herz space Morrey-Herz space

The influence of gut microbiota alteration on age-related neuroinflammation and cognitive decline

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Neural Regeneration Research 2022年第11期17卷 2407-2412页

作者： Amsha S.Alsegiani Zahoor A.shah Department of Medicinal and Biological Chemistry College of Pharmacy and Pharmaceutical SciencesUniversity of ToledoToledoOHUSA

Recent emerging research on intestinal microbiota and its contribution to the central nervous system during health and disease has attra cted significant ***-related intestinal microbiota changes initiate brain aging and age-related neurodegenerative *** is one of the critical predisposing risk factors for the development of neurodegenerative *** a healthy gut microbiota is essential for a healthy body and aging,but dys biosis could initiate many chro nic *** the underlying mechanisms of gut microbiota alterations/dys biosis will help identify biomarkers for aging-related chro nic *** review summarizes recent advances in micro biota-neurodegenerative disease research and will enhance our unde rstanding of gut microbiota dys biosis and its effects on brain aging.

关键词： brain aging cognitive decline dysbiosis fecal microbiota transplantation gut-microbiota neuroinflammation prebiotics probiotics

Modified Sliding Mode Observer-based Direct Torque Control of Six-phase Asymmetric Induction Motor Drive

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Chinese Journal of Electrical Engineering 2023年第3期9卷 111-123页

作者： Krunal shah Abid Mansuri Rakesh Maurya Department of Electrical Engineering Sardar Vallabhbhai National Institute of TechnologySurat 395007India

In this study,a six-phase induction asymmetric induction motor(SPAIM)was examined,whose performance surpasses that of its three-phase counterpart,with regard to the torque density,torque pulsation,fault tolerance,power rating per inverter lag,and noise ***-encoder-less direct torque control(DTC)for SPAIM with virtual voltage vectors(VVVs)and a modified sliding mode observer(MSMO)are *** SPAIM model was developed using a stationaryα-βframe for *** conventional DTC of the SPAIM drive is a simple extension of DTC for a 3-Φmotor drive that yields higher distortion in the stator *** mitigate the large amount of distortion in the stator current,VVVs were used to significantly reduce the harmonic content in the stator ***,to overcome the large amount of chattering observed in the case of a traditional sliding mode observer,particularly under low-speed operation,the MSMO was employed to reduce chattering even under low-speed *** performance of the proposed observer was verified under all the operating conditions suitable for the propulsion mode of an electric vehicle using Matlab/Simulink,and the results were experimentally validated.

关键词： Direct torque control multiphase induction motor drive sliding mode observer space vector modulation

The role of cofilin in age-related neuroinflammation

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Neural Regeneration Research 2020年第8期15卷 1451-1459页

作者： Amsha S.Alsegiani Zahoor A.shah Department of Medicinal and Biological Chemistry College of Pharmacy and Pharmaceutical Sciences University of Toledo

Aging brain becomes susceptible to neurodegenerative diseases due to the shifting of microglia and astrocyte phenotypes to an active“pro-inflammatory”state,causing chronic low-grade *** the fact that the role of neuroinflammation during aging has been extensively studied in recent years,the underlying causes remain *** identification of relevant proteins and understanding their potential roles in neuroinflammation can help explain their potential of becoming biomarkers in the aging brain and as drug targets for prevention and *** will eventually reduce the chances of developing neurodegenerative diseases and promote healthier lives in the *** this review,we have summarized the morphological and cellular changes in the aging brain,the effects of age-related neuroinflammation,and the potential role of cofilin-1 during *** also discuss other factors contributing to brain aging and neuroinflammation.

关键词： aging astrocyte-activation cofilin cofilin inhibitor cofilin/actin rods inflammaging microglial activation neurogenesis neuroinflammation

TiC-Maraging stainless steel composite:microstructure, mechanical and wear properties

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Rare Metals 2006年第6期25卷 630-635页

作者： Akhtar Farid Khadijah Ali shah Syed Javid Askari School of Material Science and Engineering University of Science and Technology Beijing Beijing 100083 China

Particulate TiC reinforced 17-4PH and 465 maraging stainless steel matrix composites were processed by conventional powder metallurgy （P/M）. TiC-maraging stainless steel composites with theoretical density 〉97% were produced using conventional P/M. The microstructure, and mechanical and wear properties of the composites were evaluated. The microstructure of the composites consisted of （core-rim structure） spherical and semi-spherical TiC particles depending on the wettability of the matrix with TiC particles. In TiC-maraging stainless steel composites, 465 stainless steel binder phase showed good wettability with TiC particles. Some microcracks appeared in the composites, indicating the presence of tensile stresses in the composites produced during sintering. The typical properties, hardness, and bend strength were reported for the composites. After heat treatment and aging, an increase in hardness was observed. The increase in hardness was at- tributed to the aging reaction in maraging stainless steel. The specific wear behavior of the composites strongly depends on the content of TiC particles and their interparticle spacing, and on the heat treatment of the maraging stainless steel.

关键词： TiC-maraging stainless steel composites aging wear powder metallurgy microcracks

Spectroscopic properties of Δ baryons

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Chinese Physics C 2021年第2期45卷 119-125页

作者： Chandni Menapara Zalak shah Ajay Kumar Rai Department of Applied Physics Sardar Vallabhbhai National Institute of TechnologySurat-395007GujaratIndia

The resonance state of theΔ baryon,which exists in four isospin(I=3/2)states,has been studied using the hypercentral constituent quark model(hCQM)with a simple linear potential with added first order *** calculated data ranges for 1S-5S,1P-5P,1D-4D and 1F-2F are given,with possible spin-parity assignments for all the *** magnetic moments have also been obtained for all four ***\pidecay channel width has been calculated for a few *** linear nature of the data has been verified through Regge trajectories.

关键词： mass spectra light baryon magnetic moment Regge trajectory

Diagnostic clues to avoid pitfalls in the management of rare association of anorectal malformation with ileal atresia

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World Journal of Pediatrics 2016年第4期12卷 504-505页

作者： Archana Puri Shalu shah Department of Pediatric Surgery Kalawati Saran Children's Hospital and Lady Hardinge Medical CollegeNew Delhi 110001India

A full-term,2700 g,one-day-old baby presented with imperforate anus,bilious vomiting and abdominal *** examination,ultrasonography abdomen and echocardiography revealed no associated congenital anomalies.

关键词： rare abdomen management

Small-duct primary sclerosing cholangitis with hepatocellular carcinoma requiring liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2010年第2期9卷 208-212页

作者： Sharif Ali Veena shah Department of Pathology and Laboratory Medicine Henry Ford Health System

BACKGROUND:Primary sclerosing cholangitis(PSC)is a chronic progressive cholestatic liver disease,which usually affects young adults and is diagnosed by *** a few occasions,the disease either starts in or exclusively involves the small intrahepatic bile ducts,referred to as small-duct PSC. METHODS:A 31-year-old man presented with severe hematemesis secondary to liver *** a course of 8 years,his liver decompensated and required an orthotopic liver transplantation. In this report we discuss his disease presentation,course of management,and the post-transplantation course of manage- ment,and review the morphologic diagnosis,and differential diagnosis of the disease with large-duct type and other diseases that involve small intrahepatic bile ducts. RESULTS:The patient’s explanted liver showed changes of PSC affecting only the small-and medium-sized bile ducts in addition to three incidental nodules of hepatocellular carcinoma. CONCLUSIONS:Small-duct PSC has a substantially better prognosis than the large-duct type,with less chance of developing cirrhosis and an equal risk for developing hepato- cellular carcinoma,but no increased risk for developing *** seems to help relieve the symptoms but not necessarily improve *** transplantation remains the ultimate cure.

关键词： primary sclerosing cholangitis small-duct diseases of the liver hepatocellular carcinoma liver transplantation