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Defence Technology（防务技术） 2020年第1期16卷 35-42页

作者： Karan shah Subramani Sockalingam McNAIR Center for Aerospace Innovation and Research University of South CarolinaSCUSA Department of Mechanical Engineering University of South CarolinaSCUSA

Ballistic impact induces complex stress states on fiber-based armor *** impact fibers undergo multiaxial loading which includes axial tension,axial compression,transverse compression,and transverse *** co mpression induced by the projectile leads to permanent defo rmation and fibrillation of fibers resulting in degradation of material tensile *** work(Sockalingam et *** Res.J 2018) has shown a reduction of 20% in the tensile strength of Dyneema~? SK76 single fibers subjectet to 77% nominal transverse compressive *** investigation of quasistatic transverse compression on Dyneema~? SK-76 yarns,unconstrained in the lateral direction,indicate an average of 4% reduction in tensile strength of yarns compressed to 77% nominal *** this work we use finite element modeling techniques to understand the difference in residual tensile strength between single fibers and yarns observed in laterally unconstrained transverse compression *** element study of the transverse compression response of single fibers and yarns indicate that local strains developed in fibers within the yarn are much lower than the local strains developed in single fibers subjected to a given nominal strain and may explain the less reduction in strength observed in yarns.

关键词： Polymer fibers Compression Tensile strength

Privacy preserving secure expansive aggregation with malicious node identification in linear wireless sensor networks

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Frontiers of Computer Science 2021年第6期15卷 155-163页

作者： Kaushal shah Devesh JINWALA Assistant Professor Computer EngineeringPandit Deendayal Energy UniversityGandhinagar 382007India Professor Computer EngineeringSardar Vallabhbhai National Institute of TechnologySurat 395007India

The Wireless Sensor Networks(WSNs)used for the monitoring applications like pipelines carrying oil,water,and gas;perimeter surveillance;border monitoring;and subway tunnel monitoring form ***,the infrastructure being monitored inherently forms linearity(straight line through the placement of sensor nodes).Therefore,suchWSNs are called linear *** applications are security critical because the data being communicated can be used for malicious *** contemporary research of WSNs data security cannot fit in directly to linear WSN as only by capturing few nodes,the adversary can disrupt the entire service of linear ***,we propose a data aggregation scheme that takes care of privacy,confidentiality,and integrity of *** addition,the scheme is resilient against node capture attack and collusion *** are several schemes detecting the malicious ***,the proposed scheme also provides an identification of malicious nodes with lesser key storage ***,we provide an analysis of communication cost regarding the number of messages being *** the best of our knowledge,the proposed data aggregation scheme is the first lightweight scheme that achieves privacy and verification of data,resistance against node capture and collusion attacks,and malicious node identification in linear WSNs.

关键词： linear wireless sensor networks secure data aggregation privacy malicious node identification

Micro-invasive glaucoma surgery – an interventional glaucoma revolution

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Eye and Vision 2019年第1期6卷 242-246页

作者： Manjool shah Department of Ophthalmology and Visual Sciences Kellogg Eye CenterUniversity of Michigan1000 Wall StreetAnn ArborMI 48105USA

The glaucoma surgical landscape has changed dramatically over the last decade with the introduction and integration of micro-invasive glaucoma surgery(MIGS)*** modalities target physiologic outflow pathways or optimize previously utilized glaucoma surgical methods in order to deliver safety,efficacy,and individualized care to the *** techniques can be classified based on anatomical location as well as method of intraocular pressure(IOP)*** review will focus on MIGS optimizing the conventional outflow pathway via intervention at Schlemm’s canal,MIGS optimizing the uveoscleral outflow pathway via suprachoroidal shunting,and MIGS optimizing the transscleral or subconjunctival outflow pathway which has long been utilized by glaucoma surgeons performing traditional filtration *** wide array of currently available MIGS modalities can be staggering to the glaucoma care provider,but an understanding of the landscape and the large classes of interventional strategies can allow for clinical decision making based on the specifics of the patient’s needs and the pathophysiology of their disease.

关键词： Micro-invasive glaucoma surgery Glaucoma Individualized care Glaucoma surgery

Quantum chemical investigation on photodegradation mechanisms of sulfamethoxypyridazine with dissolved inorganic matter and hydroxyl radical

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Journal of Environmental Sciences 2017年第7期29卷 85-92页

作者： shaheen shah Ce Hao State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024China Department of Chemistry Karakorum International UniversityGilgit-Baitistan 15100Pakistan

Sulfamethoxypyridazine（SMP） is one of the commonly used sulfonamide antibiotics（SAs）.SAs are mainly studied to undergo triplet-sensitized photodegradation in water under natural sunlight with other coexisting aquatic environmental organic *** this work,SMP was selected as a representative of *** studied the mechanisms of triplet-sensitized photodegradation of SMP and the influence of selected dissolved inorganic matter,i.e.,anions（Br^-,Cl^-,and NO^-_3） and cations ions（Ca^（2＋）,Mg^（2＋）,and Zn^（2＋）） on SMP photodegradation mechanism by quantum chemical *** addition,the degradation mechanisms of SMP by hydroxyl radical（OH·） were also *** creation of SO_2 extrusion product was accessed with two different energy pathways（pathway-1 and pathway-2） by following two steps（step-I and step-II） in the tripletsensitized photodegradation of *** to low activation energy,the pathway-1 was considered as the main pathway to obtain SO_2 extrusion ***-II of pathway-1 was measured to be the rate-limiting step（RLS） of SMP photodegradation mechanism and the effect of the selected anions and cations was estimated for this *** selected anions and cations promoted photodegradation of SMP by dropping the activation energy of *** estimated low activation energies of different degradation pathways of SMP with OH·radical indicate that OH·radical is a very powerful oxidizing agent for SMP degradation via attack through benzene derivative and pyridazine derivative ring.

关键词： Sulfamethoxypyridazine Photodegradation mechanism Dissolved inorganic matter Hydroxyl radical DFT

Renewable energy resources, policies and gaps in BRICS countries and the global impact

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Frontiers in Energy 2019年第3期13卷 506-521页

作者： Lakshmi PATHAK Kavita shah Institute of Environment and Sustainable Development Banaras Hindu UniversityVaranasi 221005India

This paper presents comparative yet extensive analysis of existing non-conventional renewable resources, energy policies and gaps in BRICS countries. An intelligent transformation to green economy to maintain natural resources is noted. Brazil has stable energy policies and is the leading producer of biofuels following hydropower until 2014 but supported wind and solar power development by tendering specific tariffs for energy generation from solar and wind. Russia needs improvement in its legal and regulatory framework with more incentives in energy policies. China is improving upon wind and hydropower but it needs strong policy measures to put cap on increased CO2 emissions. India needs revision in energy policy and requires extra incentives and consumer specific energy policies for research-infrastructure and energy generation technologies. South Africa requires lessons to increase renewable energy and reduce coal mining. Moreover, BRICS countries need to redefine their energy policies based upon their existing geographical, economical, societal and environmental conditions which will help in shaping global energy policies and more financial stability. This paper recognizes the potential of BRICS to reshape the global system paralleled with minimizing CO2 emissions. The concerted role of BRICS needs to be recognized as the leading contributor of global renewable capacity where the developed world is geared and busy to address the environmental issues.

关键词： BRICS CO2 emissions energy policies renewable

Large Amplitude Solitary Waves in a Fluid－Filled Elastic Tube

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Communications in Theoretical Physics 2003年第2X期40卷 211-214页

作者： DUANWen-shah DepartmentofPhysics NorthwestNormalUniversityLanzhou730070China

By usign the potential method to a fluid filled elastic tube, we obtained a solitary wave *** with recluetive perturbation method, this method can be used for larger amplitude solitary waves. The result is in agreement with that of small amplitude approximation from reduetive perturbation method when the amplitude is small enough.

关键词：孤波位势方法流体装载弹性管扰动法孤波解

FIAs(Foliation Intersection/Inflection Axes) Preserved in Porphyroblasts,the DNA of Deformation:A Solution to the Puzzle of Deformation and Metamorphism in the Colorado,Rocky Mountains,USA

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Acta Geologica Sinica(English Edition) 2009年第5期83卷 971-984页

作者： shah Afroz Ahmad School of Earth and Environmental Sciences James Cook UniversityTownsville Queensland Australia

FIAs have been used extensively for more than a decade to unravel deformation and metamorphic puzzles. Orogenic processes developing early during the history or orogenesis challenge scientists because compositional layering in rocks always reactivates where multiple deformations have occurred, leaving little evidence of the history of foliation development preserved in the matrix. The foothills of the Rocky Mountains in Colorado, USA contain a succession of four FIA sets （trends） that would not have been distinguishable if porphyroblasts had not grown during the multiple deformation events that affected these rocks or if they had rotated as these events took place. They reveal that both the partitioning of deformation and the location of isograds changed significantly as the deformation proceeded.

关键词： foliation intersection/inflection axes porphyroblast deformational partitioning

Maximal Moment Inequality for Partial Sums of Strong Mixing Sequences and Application

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Acta Mathematica Sinica,English Series 2007年第6期23卷 1013-1024页

作者： shah Chao YANG Department of Mathematics Guangxi Normal University Guilin 541004 P. R. China

Some maximal moment inequalities for partial sums of the strong mixing random variable sequence are established. These inequalities use moment sums as up-boundary and improve the corre- sponding ones obtained by Shao （1996）. To show the application of the inequalities, we apply them to discuss the asymptotic normality of the weight function estimate for the fixed design regression model.

关键词： strong mixing maximal moment inequality fixed design regression model weight functionestimate asymptotic normality

Factors affecting farmers'choice to adopt risk management strategies:The application of multivariate and multinomial probit models

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Journal of Integrative Agriculture 2024年第12期23卷 4250-4262页

作者： Jamal shah Majed Alharthi School of Business Department of EconomicsUniversity of DundeeDundee DD14HNUnited Kingdom Finance Department College of BusinessKing Abdulaziz UniversityRabigh 21911Saudi Arabia

This study investigates the factors that impact farmers'adoption of risk management strategies(RMS)in Pakistan during times of *** study examines farmers'adoption of RMS using both multinomial probit(MNP)and multivariate probit(MVP).Data were collected from 382 farmers sampled from four districts in KhyberPakhtunkhwa(KP)province of Pakistan via a multistage sampling *** study utilizes the MNP model,considering the assumption of Independence of Irrelevant Alternatives(IIA)and incorporating correlated error *** objective is to understand farmers'behavior in risky situations and determine if there is *** are compared with the MVP model to assess robustness and gain deeper understanding of farmers'decisionmaking *** research findings reveal that our results are robust,and farmers behave homogeneously in various RMS *** adopt RMS individually or in combination to mitigate the adverse effects of natural calamities on their *** risk-averse farmers,who perceive weather-related risks as a threat,access credits and information,and have farms close to a river are more likely to adopt RMS,irrespective of the format of the strategies ***,the predicted probabilities and correlation of the RMS and RM categories have strengthened our model *** findings provide insights into the behavior of farmers in adopting RMS which are helpful for policymakers and stakeholders in developing strategies to mitigate the impacts of natural calamities on farmers.

关键词： multinomial probit model multivariate probit model risk management strategies risk-attitude risk perception

Modulating microRNAs in cancer: next-generation therapies

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Cancer Biology & Medicine 2022年第3期19卷 289-304页

作者： Nahid Arghiani Khalid shah Center for Stem Cell and Translational Immunotherapy(CSTI) Harvard Medical SchoolBostonMA 02115USA Department of Neurosurgery Brigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115USA Harvard Stem Cell Institute Harvard UniversityCambridgeMA 02138USA

MicroRNAs(miRNAs)are a class of endogenously expressed non-coding regulators of the genome with an ability to mediate a variety of biological and pathological *** is growing evidence demonstrating frequent dysregulation of microRNAs in cancer cells,which is associated with tumor initiation,development,migration,invasion,resisting cell death,and drug *** have shown that modulation of these small RNAs is a novel and promising therapeutic tool in the treatment of a variety of diseases,especially cancer,due to their broad influence on multiple cellular ***,suboptimal delivery of the appropriate miRNA to the cancer sites,quick degradation by nucleases in the blood circulation,and off target effects have limited their research and clinical ***,there is a pressing need to improve the therapeutic efficacy of miRNA modulators,while at the same time reducing their *** delivery vehicles for miRNA modulators have been shown to be effective in vitro and in *** this review,we will discuss the role and importance of miRNAs in cancer and provide perspectives on currently available carriers for miRNA *** will also summarize the challenges and prospects for the clinical translation of miRNAbased therapeutic strategies.

关键词： MiRNAs dysregulation delivery systems cancer therapy clinical translation