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Recurrent stroke admissions with vs without COVID-19 and associated in-hospital mortality: A United States nationwide analysis, 2020

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World Journal of Virology 2024年第3期13卷 98-106页

作者： Rupak Desai Sai Priyanka Mellacheruvu Sai Anusha Akella Adil Sarvar Mohammed Mushfequa hussain Abdul Aziz Mohammed Pakhal Saketha Praveena Sunkara Jyotsna Gummadi Paritharsh Ghantasala Outcomes Research Independent ResearcherAtlantaGA 30033United States Department of Public Health University of MassachusettsLowellMA 01854United States Department of Internal Medicine One Brooklyn Health-Interfaith Medical CenterBrooklynNY 11213United States Department of Internal Medicine Central Michigan University College of MedicineSaginawMI 48602United States Department of Internal Medicine Kamineni Institute of Medical SciencesNarketpally 508254India Department of Internal Medicine Bhaskar Medical CollegeMoinabad 500075HyderabadIndia Department of Internal Medicine MedStar Medical GroupCharlotte HallMD 20622United States Department of Medicine Medstar Franklin Square Medical CenterBaltimoreMD 21237United States

BACKGROUND Coronavirus disease 2019(COVID-19)has been shown to increase the risk of ***,the prevalence and risk of recurrent stroke in COVID-19 patients with prior stroke/transient ischemic attack(TIA),as well as its impact on mor-tality,are not *** To evaluate the impact of COVID-19 on in-hospital mortality,length of stay,and healthcare costs in patients with recurrent *** We identified admissions of recurrent stroke(current acute ischemic stroke admissions with at least one prior TIA or stroke)in patients with and without COVID-19 using ICD-10-CM codes using the National Inpatient Sample(2020).We analyzed the impact of COVID-19 on mortality following recurrent stroke admissions by *** Of 97455 admissions with recurrent stroke,2140(2.2%)belonged to the COVID-19-positive *** COVID-19-positive group had a higher prevalence of diabetes and chronic kidney disease vs the COVID-19 negative group(P65 years,patients aged 45–64 years,Asians,Hispanics,whites,and blacks in the COVID-19 positive group had higher rates of all-cause mortality than the COVID-19 negative group(P65(OR:7.04,95%CI:5.24-9.44),males(OR:7.82,95%CI:5.38-11.35)compared to females(OR:6.15,95%CI:4.12-9.18),and in Hispanics(OR:15.47,95%CI:7.61-31.44)and Asians/Pacific Islanders(OR:14.93,95%CI:7.22-30.87)compared to blacks(OR:5.73,95%CI:3.08-10.68),and whites(OR:5.54,95%CI:3.79-8.09).CONCLUSION The study highlights the increased risk of all-cause in-hospital mortality in recurrent stroke patients with COVID-19,with a more pronounced increase in middle-aged patients,males,Hispanics,or Asians.

关键词： COVID-19 SARS-CoV-2 Recurrent stroke Mortality Hospitalization Comorbidities Acute ischemic stroke

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Mammogram Enhancement Using Lifting Dyadic Wavelet Transform and Normalized Tsallis Entropy

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Journal of Computer Science & Technology 2014年第6期29卷 1048-1057页

作者： Muhammad hussain Department of Software Engineering King Saud University

In this paper, we present a new technique for mammogram enhancement using fast dyadic wavelet transform （FDyWT） based on lifted spline dyadic wavelets and normalized Tsallis entropy. First, a mammogram image is decom- posed into a multiscale hierarchy of low-subband and high-subband images using FDyWT. Then noise is suppressed using normalized Tsallis entropy of the local variance of the modulus of oriented high-subband images. After that, the wavelet coefficients of high-subbands are modified using a non-linear operator and finally the low-subband image at the first scale is modified with power law transformation to suppress background. Though FDyWT is shift-invariant and has better poten- tial for detecting singularities like edges, its performance depends on the choice of dyadic wavclcts. On the other hand, the nulnber of vanishing moments is an important characteristic of dyadic wavelets for singularity analysis because it provides an upper bound measurement for singularity characterization. Using lifting dyadic schemes, we construct lifted spline dyadic wavelets of different degrees with increased number of vanishing moments. We also examine the effect of these wavelets on mammogram enhancement. The method is tested on mammogram images, taken from MIAS （Mammographic Image Analysis Society） database, having various background tissue types and containing different abnormalities. The comparison with tile state-of-the-art contrast enhancement methods reveals that the proposed method performs better and the difference is statistically significant.

关键词： mammogram enhancement lifting dyadic wavelet transform Tsallis entropy

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错失的温室气体减排机遇——被低估的生活垃圾填埋场甲烷排放量（英文）

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Engineering 2024年第5期 12-15页

作者：王曜周传斌楼紫阳张厚虎 Abid hussain 詹良通殷柯方明亮费璕瑺 School of Civil and Environmental Engineering Nanyang Technological University State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Department of Environmental Science and Engineering Shanghai Jiao Tong University Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Department of Civil and Environmental Engineering Carleton University Ministry of Education (MOE) Key Laboratory of Soft Soils and Geoenvironmental Engineering Zhejiang University Department of Environmental Engineering School of Biology and the Environment Nanjing Forestry University Department of Environmental Science and Engineering Fudan University

1. Introduction Cities are responsible for approximately 70%of all anthropogenic greenhouse gas (GHG) emissions and about 60%of all anthropogenic methane (CH4) emissions [1,2]. Solid waste disposal sites (including landfills and dumpsites), which are prevalent in global cities, emit CH4generated from the anaerobic biodegradation of municipal solid waste (MSW). Notably, the proportions of CH4emissions from disposal sites surpass 50%of the total CH4emissions in some megalopolises [3]. CH4has a high global warming potential (GWP), being 28 times stronger than carbon dioxide (CO2) over a 100-year period and 80 times stronger over a 20-year period [4]. Understanding and mitigating CH4emissions from solid waste disposal sites is particularly pertinent and pressing, considering that the latest Synthesis Report from the Intergovernmental Panel on Climate Change (IPCC) emphasizes that the current pace of mitigation and adaptation policies and measures falls short of restraining global temperature rise to under 1.5。C within the 21st century [4]. More than 150 countries signed the Global Methane Pledge at the United Nations Climate Change Conference in Glasgow (COP26), which aims to reduce global annual CH4emissions by 30%by 2030, compared with emissions in 2020 [5].

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Studies on the effects of pre-firing and sintering temperature on NSDC nanocomposite electrolytes

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Progress in Natural Science:Materials International 2022年第1期32卷 128-134页

作者： Saddam hussain Yangping Li Fida hussain Memon Sabir hussain Lei Li Khalid hussain Thebo State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University Department of Electrical Engineering Sukkur IBA University Department of Space Science University of the Punjab University of Chinese Academy of Sciences

Solid oxide fuel cells（SOFCs） technology, with fuel flexibility, is one of the most promising power generation technology. However, the high operating temperature of SOFCs has hindered their commercial applications. As a crucial requirement to enhance its performance, SOFCs electrolytes should operate at a low temperature. Carbonate/ceria composites are developed as electrolytes for low operating temperature SOFCs, and a better understanding of the mechanism of its ionic conductivity serves this purpose. In this work, ceria-carbonate composite electrolyte, Na;CO;/samarium doped ceria（NSDC） were synthesized by the co-precipitation *** synthesized electrolytes were characterized by X-ray diffraction（XRD）, scanning electron microscopy（SEM）,X-ray photoelectron spectroscopy（XPS）, and UV–Vis spectroscopy. The XRD and SEM results showed that the sintered NSDC nanocomposite comprised a single-phase dense electrolyte structure. The crystallite size of the NSDC nanocomposite was greatly affected by the different pre-firing temperatures and different sintering temperatures. Also, the ionic conductivity of the prepared NSDC nanocomposite electrolytes was strongly dependent on the pre-firing and sintering temperatures. The NSDC nanocomposite electrolytes were pre-fired at 950°C and650°C and sintered at 1200°C and 900°C respectively, had ionic conductivity in H;and air high as 0.36 S/cm and 0.3 S/cm.

关键词： Solid oxide fuel cell NDSC Composite Electrolyte Ionic conductivity

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Ultrasensitive and selective 4-aminophenol chemical sensor development based on nickel oxide nanoparticles decorated carbon nanotube nanocomposites for green environment

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Journal of Environmental Sciences 2017年第3期29卷 27-38页

作者： Mohammad Musarraf hussain Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah 21589P.O.Box 80203Saudi Arabia Center of Excellence for Advanced Material Research(CEAMR) King Abdulaziz UniversityJeddah 21589P.O.Box 80203Saudi Arabia

Nickel oxide nanoparticles decorated carbon nanotube nanocomposites （*** NCs） were prepared in a basic medium by using facile wet-chemical routes. The optical, morphological, and structural properties of *** NCs were characterized using Fourier transformed infra-red （FT-IR）, Ultra-violet visible （UV/Vis） spectroscopy, field-emission scanning electron microscopy （FESEM）, X-ray energy dispersed spectroscopy （XEDS）, X-ray photoelectron spectroscopy （XPS）, and powder X-ray diffraction （XRD） methods. Selective 4-aminophenol （4-AP） chemical sensor was developed by a fiat glassy carbon electrode （GCE, surface area： 0.0316 cm2） fabricated with a thin-layer of NCs. Electrochemical responses including higher sensitivity, large dynamic range （LDR）, limit of detection （LOD）, and long-term stability towards 4-AP were obtained using the fabricated chemical sensors. The calibration curve was found linear （R2 = 0.914） over a wide range of 4-AP concentration （0.1 nmol/L-0.1 tool/L）. In perspective of slope （2 x 10.5 gA/gM）, LOD and sensitivity were calculated as 15.0 ＋ 0.1 pM and -6.33 - 10.4 gA/（***） respectively. The synthesized *** NCs using a wet-chemical method is a significant route for the development of ultrasensitive and selective phenolic sensor based on nano-materials for environmental toxic substances. It is suggested that a pioneer and selective development of 4-AP sensitive sensor using *** NCs by a facile and reliable current us voltage （I-V） method for the major application of toxic agents in biological, green environmental, and health-care fields in near future.

关键词： NiO decorated CNT nanocomposltesOptical evaluationFabricationSensitivity4-AminophenolI-V method

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Optimal Islanding for Restoration of Power Distribution Systems Using Prim’s MST Algorithm

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CSEE Journal of Power and Energy Systems 2022年第2期8卷 599-608页

作者： Kaka Sanaullah Mingchao Xia Mazhar hussain Sharafat hussain Ammar Tahir the School of Electrical Engineering Beijing Jiaotong UniversityBeijing 10044China the School of Computer and Information Technology Beijing Jiaotong UniversityBeijing 10044China

Power systems can suffer outages,causing complete or partial disconnection of their power supply to load centers within the distribution *** Generation(DG)plays an essential role in power *** can be used as a back-up power source to enhance the resiliency and reliability of a power *** mode operations after outages in an active distributing network(ADN)is an effective way to maintain continuity of the power supply to significant *** is a quite complicated task for power system operators to find the power flow *** studies have primarily used pre-defined guidelines to find feasible power flow paths,and have focused on multiple islands for *** these studies,possible restoration pathfinding with DG was the fundamental weakness,and furthermore,the power of DG was limited to pre-defined boundaries in the form of ***,in this study,a new algorithm has been proposed,which uses the minimum spanning tree(MST)method to find the most feasible *** proposed algorithm starts at any random node(in this case,DG),and progresses by selecting the next node with the least cost(weight),thus considering all the nodes through which power will *** proposed model is formulated as a multiobjective program considering the priority of loads and minimum power *** effectiveness of the proposed model is tested on a modified IEEE69-bus distribution system with the penetration of multiple distributed generation sources at different *** were compared with the strategies found in literature,and the proposed method was found to be feasible and efficient.

关键词： Active distribution network distributed generation islanding multi-objective minimum spanning tree

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The Effect of Spectral Index Parameter κ on Obliquely Propagating Solitary Wave Structures in Magneto-Rotating Plasmas

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Chinese Physics Letters 2012年第6期29卷 211-214页

作者： S.hussain Theoretical Plasma Physics Division PINSTECHNiloreIslamabad 44000Pakistan Department of Physics and Applied Mathematics PIEAS NiloreIslamabad 44000Pakistan

Nonlinear ion-acoustic solitary wave structures in collisionless,non-relativistic,homogenous,magneto-rotating plasma,in which the electron species follow the kappa distribution function,are *** Korteweg-de Vries (KdV) equation is derived by using the reductive perturbation method,and the effects of different plasma parameters on the obliquely propagating nonlinear solitary wave structures in the magneto-rotating plasma are *** is noticed that the spectral index parameter κ significantly modifies the nonlinear wave structure.

关键词： structure rotating solitary

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A Comparison of Image Processing Techniques for Optical Interference Fringe Analysis

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Photonic Sensors 2015年第4期5卷 304-311页

作者： Muhammad FAROOQ Aasma ASLAM Babar hussain Ghazanfar hussain Masroor IKRAM National Institute of Lasers and Optronics Lehtrar Road lslamabad 45650 Pakistan Hazara University Mansehra and NUST lslamabad 21300 Pakistan University of North Carolina at Charlotte Department of Electrical and Computer Engineering 9201 University City Boulevard Charlotte 28223 USA pakistan Institute of Engineering and Applied Sciences lslamabad 45650 Pakistan

We present a comparison of different techniques for the analysis of the shift and tilt in optical interference fringes. Fringe center, Radon transform, and Gaussian approximation methods are used for fringe analysis. We have measured the tilt and shift between two relevant fringe pattems. The error in tilt measurement was about 2%, and the displacement of the order of few nanometers was measured by the fringe shift analysis. The comparison between the techniques is analyzed with respect to percentage error.

关键词： Interferometry fringes tilt shift imaging

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Numerical and experimental study of wave shaper effects on detonation wave front

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Defence Technology（防务技术） 2018年第1期14卷 45-50页

作者： Khalid Naeem Arshad hussain SCME (NUST) Islamabad Simulation Lab.Room 113 SCME NUST H-12 Campus SCME (NUST) H-12 Campus

In the current study, streak camera was used to find concentricity of the assembly during detonation,investigate and compare shock front within the high explosive and behavior of the shock front on the surface of the liner, one containing wave shaper and the other without wave shaper. Streaks revealed that the whole assembly was concentric till the formation of the jet. Observed streaks vindicate the uniform propagation of shock front in both the cases. Results obtained for shock front velocities are in agreement with those obtained from simulations. In the presence of wave shaper higher shock front velocity was observed both in simulation and experiment. Simulation without wave-shaper showed that shock front struck the copper cone at grazing angle while in the presence of wave-shaper it struck at an angle of 125.

关键词： Shock front Streak camera Simulation Wave shaper

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Computational Fluid Dynamics(CFD) Modeling of Heat Transfer in a Polymeric Membrane using Finite Volume Method

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Journal of Thermal Science 2016年第6期25卷 564-570页

作者： Muhammad Ahsan Arshad hussain School of Chemical and Materials Engineering(SCME) National University of Sciences and Technology(NUST)

The efficiency,robustness and reliability of recent numerical methods for finding solutions to flow problems have given rise to the implementation of computational fluid dynamics(CFD) as a broadly used analysis method for engineering problems like membrane separation *** CFD modeling in this study observes steady and unsteady(transient) heat flux and temperature profiles in a polymeric(cellulose acetate) *** study is novel due to the implementation of user defined scalar(UDS) diffusion equation by using user-defined functions(UDFs) infinite volume method(FVM).Some details of the FVM used by the solver are carefully discussed when implementing terms in the governing equation and boundary conditions(BC).The contours of temperature due to high-temperature gradient are reported for steady and unsteady problems.

关键词： unsteady solver scalar polymeric Membrane robustness governing carefully details discretization

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