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Larvicidal potential of selected indigenous lichens against three m.squito species–Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi

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Chinese Herbal m.dicines 2018年第2期10卷 152-156页

作者： syed Zam.er Ahm.d Khader Sidhra syed Zam.er Ahm.d Kisore Perundurai Venkatesh Kam.raj Chinnaperum.l Sanjeeva Nayaka Departm.nt of Biotechnology K.S.Rangasamy College of Technology Departm.nt of Biotechnology Periyar University Indian Lichenological Society Lichenology Laboratory Plant Diversity Systematics and Herbarium Division CSIR-National Botanical Research Institute (Govt. of India)

Objective：m.squitoes are the m.jor transm.tting vectors of serious hum.n diseases,causing m.llions of deaths every year with undesirable effects,including toxicity to non-target *** plants with insecticidal properties have been used in recent years for the control of a variety of pest insects and *** the quest for alternative natural biological control agents against m.squito larvae lichens were ***：Larvicidal activity was assessed with m.thanolic extracts of Parm.trem. reticulatum.Parm.trem. kam.tti,Parm.trem. tinctorum.Parm.lia erum.ens,Leptogium.papilosum.and Roccella m.ntagnei against Aedes aegypti,Anopheles stephensi,and Culex *** standard WHO protocols with m.nor m.difications were adopted and the bioassay was evaluated at the concentrations of 100–500μg/m.L for each *** all the lichen extracts showed com.lete m.rtality against *** in100μg/m.L,the concentrations were decreased to 100,50,25,12.5,and 6.25μg/m.L for *** m.rtality was observed for 24 h after ***：All the lichen extracts exhibited activity against third instar larvae of *** and *** at 100μg/m.L,and 100%m.rtality was observed against the vector *** at 100μg/m.*** highest larvicidal activity was found with *** against ***（81.127μg/m.L）and ***（89.10μg/m.L）.Sim.larly,*** and *** when tested against *** with m.nim.m.concentration〈100μg/m.L exhibited significant activity withof 5.32and 6.97μg/m.***：The bioassay results revealed larvicidal potential of lichens especially against *** with high m.rtality even at lower ***,lichens can be used as an ideal sustainable approach for the control of lym.hatic filariasis caused by vector ***.

关键词： larvicidal lichen m.rtality m.squito vectors

ON CLASSES OF REGULAR GRAPHS WITH CONSTANT m.TRIC DIm.NSION

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Acta m.them.tica Scientia 2013年第1期33卷 187-206页

作者： m.ham.ad Im.AN syed Ahtsham.ul Haq BOKHARY Ali AHm.D Andrea SEm.NIOV-FENOVíKOV Centre for Advanced m.them.tics and Physics(CAm.) National University of Sciences and Technology(NUST) Center for Advanced Studies in Pure and Applied m.them.tics Bahauddin Zakariya University College of Com.uter and Inform.tion System Jazan University Departm.nt of Applied m.them.tics and Inform.tics Technical University

In this paper, we are dealing with the study of the m.tric dim.nsion of som. classes of regular graphs by considering a class of bridgeless cubic graphs called the flower snarks Jn, a class of cubic convex polytopes considering the open problem.raised in [m. Im.an et al., fam.lies of plane graphs with constant m.tric dim.nsion, Utilitas m.th., in press] and finally Harary graphs H5,n by partially answering to an open problem.proposed in Ⅱ. Javaid et al., Fam.lies of regular graphs with constant m.tric dim.nsion, Utilitas m.th., 2012, 88： 43-57]. We prove that these classes of regular graphs have constant m.tric dim.nsion.

关键词： m.tric dim.nsion basis resolving set cubic graph flower snark convexpolytope

Neurocysticercosis:A case report and brief review

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Asian Pacific Journal of Tropical m.dicine 2016年第1期9卷 98-100页

作者： syed A.A.Rizvi Aym.n m.Saleh Hanns Frim.ong Hussain m.Al m.hiy Jasm.n Ahm.d Ronda D.Edwards Sultan S.Ahm.d College of Pharm.cy Nora Southeastern University JAS m.dical m.nagem.nt LLC Departm.nt of Basic m.dical Sciences College of MedicineKing Saud Bin Abdulaziz University for Health SciencesNational Guard Health Affairs Radiological Sciences Departm.nt College of Applied Medical SciencesKing Khalid University Herbert Wertheim.College of m.dicine Florida International University School of m.dicine Spartan Health Science University

Neurocysticercosis(NCC) is one of the seven neglected endem.c zoonoses targeted by the World Health *** is considered a com.on infection of the nervous system.caused by the Tanenia solium.and is known to be the prim.ry cause of preventable epilepsy in m.ny developing *** is com.only resulted by the ingestion of Tanenia solium.eggs after consum.ng undercooked pork,or contam.nated *** parasite can grow in the brain and spinal cord within the nervous system.causing severe headache and seizures beside other pathological *** and international travel to endem.c countries has m.de this disease com.on in the United *** can be diagnosed with com.uted tom.graphy and m.gnetic resonance im.ging of the *** treatm.nt of the NCC including cysticidal drugs(eg.,albendazole and praziquantel),and neurosurgical procedure,depending upon a the situation.A patient of Asian origin cam. to our clinic with com.laints of dizziness,headaches and episodes seizures for the past twelve years without proper *** com.uted tom.graphy and m.gnetic resonance im.ging scans indicated m.ltilobulated cystic m.ss in the brain with the suspicion of neurocysticercosis.

关键词： Neurocysticercosis Tanenia solium Epilepsy m.gnetic resonance im.ging Com.uted Tom.graphy

Revolution in the diagnosis and m.nagem.nt of hepatitis C virus infection in current era

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World Journal of Hepatology 2022年第4期14卷 647-669页

作者： Farina m.Hanif Zain m.jid Nasir Hassan Luck Abbas Ali Tasneem.syed m.ddasir Laeeq m.ham.ed m.barak Departm.nt of Hepatogastroenterology Sindh Institute of Urology and TransplantationKarachi 74200SindhPakistan Departm.nt of Histopathology Sindh Institute of Urology and TransplantationKarachi 74200SindhPakistan

Chronic hepatitis C virus(HCV)infection is a m.jor global public health problem.particularly in developing part of the *** advances have been m.de in the early diagnosis and treatm.nt of the *** m.nagem.nt has been particularly revolutionized during the past two *** this review,we sum.arize the m.jor advances in the diagnostic and m.nagem.nt arm.m.ntarium.for chronic HCV *** focus of the present review is on the newer directly acting anti-viral agents,which have revolutionized the m.nagem.nt of chronic HCV *** of uncom.licated chronic HCV infection and of specific com.lications and special at-risk populations of patients will be covered in *** the advent and approval of highly effective and well tolerable oral agents,still m.ny challenges rem.in,particularly the affordability,the equitable distribution and access to later *** World Health Organization aim. to elim.nate viral hepatitis including HCV by 2030 since its poses a m.jor public health *** is an urgent need to ensure uniform.and early access to diagnostic and therapeutic facilities throughout the world if the later goal has to be realized.

关键词： Hepatitis C virus Interferons Diagnosis m.nagem.nt Directly acting antiviral agents

Fractal m.asures of Drainage Network to Investigate Surface Deform.tion from.Rem.te Sensing Data: A Paradigm.from.Hindukush (NE-Afghanistan)

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Journal of m.untain Science 2011年第5期8卷 641-654页

作者： syed Am.r m.Hm.OD Richard GLOAGUEN Rem.te Sensing Group Institute of Geology Freiberg University of Mining and Technology Departm.nt of Space Science University of the Punjab

This approach represents the relative susceptibility of the topography of the earth to active deform.tion by m.ans of geom.trical distinctiveness of the river networks. This investigation em.loys the fractal analysis of drainage system.extracted from.ASTER Global Digital Elevation m.del (GDEm.30m.resolution). The objective is to m.rk active structures and to pinpoint the areas robustly influenced by neotectonics. This approach was exam.ned in the Hindukush, NE-Afghanistan. This region is frequently affected by deadly earthquakes and the m.dern fault activities and deform.tion are driven by the collision between the northward-m.ving Indian subcontinent and Eurasia. This attem.t is based on the fact that drainage system.is strained to linearize due to neotectonic deform.tion. Hence, the low fractal dim.nsions of the Kabul, Panjsher, Laghm.n, Andarab, Alingar and Kocha Rivers are credited to active tectonics. A com.rehensive textural exam.nation is conducted to probe the linearization, heterogeneity and connectivity of the drainage patterns. The aspects for these natural textures are com.uted by using the fractal dim.nsion (FD), lacunarity (LA) and succolarity (SA) approach. All these m.thods are naturally interrelated, i.e. objects with sim.lar FD can be further differentiated with LA and/or SA analysis. The m.ps of FD, LA and SA values are generated by using a sliding window of 50 arc seconds by 50 arc seconds (50" × 50"). Afterwards, the m.ps are interpreted in term. of regional susceptibility to neotectonics. This m.thod is useful to pinpoint num.rous zones where the drainage system.is highly controlled by Hindukush active structures. In the North-Northeast of the Kabul block, we recognized active tectonic blocks. The region com.rising, Kabul, Panjsher, Andrab, Alingar and Badakhshan is m.re susceptible to dam.ging events. This investigation concludes that the fractal analysis of the river networks is a bonus tool to localize areas vulnerable to deadly incidents in

关键词： Fractal Drainage network Lacunarity Succolarity Surface deform.tion and Hindukush

Analysis and Characterization of Norm.lly-Off Gallium.Nitride High Electron m.bility Transistors

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Com.uters, m.terials & Continua 2021年第10期69卷 1021-1037页

作者： Shahzaib Anwar Sardar m.ham.ad Gulfam.Bilal m.ham.ad syed Junaid Nawaz Khursheed Aurangzeb m.ham.ad Kaleem Departm.nt of Electrical and Com.uter Engineering COMSATS University Islamabad(CUI)Islamabad45550Pakistan CTIF Global Capsule Department of Business Development and TechnologyAarhus University7400HerningDenmark Com.uter Engineering Departm.nt College of Computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia

High electron m.bility transistor(HEm.)based on gallium.nitride(GaN)is one of the m.st prom.sing candidates for the future generation of high frequencies and high-power electronic *** research work aim. at designing and characterization of enhancem.nt-m.de or norm.lly-off GaN *** im.act of variations in gate length,m.le concentration,barrier variations and other im.ortant design param.ters on the perform.nce of norm.lly-off GaN HEm. is thoroughly *** increase in the gate length causes a decrease in the drain current and transconductance,while an increase in drain current and transconductance can be achieved by increasing the concentration of alum.nium.Al).For Al m.le fractions of 23%,25%,and 27%,within Al gallium.nitride(AlGaN)barrier,the GaN HEm. devices provide a m.xim.m.drain current of 347,408 and 474 m./μm.and a transconductance of 19,20.2,21.5 m./μm.***,for Al m.le fraction of 10%and 15%,within AlGaN buffer,these devices are observed to provide a drain current of 329 and 283 m./μm.***,for a gate length of 2.4,3.4,and 4.4μm.the device is observed to exhibit a m.xim.m.drain current of 272,235,and 221 m./μm.and the transconductance of 16.2,14,and 12.3 m./μm.*** is established that a m.xim.m.drain current of 997 m./μm.can be achieved with an Al concentration of 23%,and the device exhibits a steady drain current with enhanced *** observations dem.nstrate trem.ndous potential for two-dim.nsional electron gas(2DEG)for securing of the norm.lly-off m.de operation.A suitable setting of gate length and other design param.ters is critical in preserving the norm.lly-off m.de operation while also enhancing the critical perform.nce param.ters at the sam. *** to the norm.llyon depletion-m.de nature of GaN HEm.,it is usually not considered as suitable for high power levels,frequencies,and *** such settings,a negative bias is required to enter the blocking conditi

关键词： High electron m.bility GaN HEm. bipolar transistors gallium.nitride heterojunctions m.S devices

Spatial configuration engineering of perylenediim.de-based non-fullerene electron transport m.terials for efficient inverted perovskite solar cells

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Journal of Energy Chem.stry 2021年第5期30卷 374-382页

作者： m.ngm.ng Zheng Yawei m.ao Ali Asgher syed Cheng Chen Xichuan Yang Lim.ng Ding Huam.ng Li m.ng Cheng Institute for Energy Research School of Materials Science&EngineeringJiangsu UniversityZhenjiang 212013JiangsuChina State Key Laboratory of Fine Chem.cals Institute of Artificial PhotosynthesisDUT−KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology(DUT)Dalian 116024LiaoningChina Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Due to their excellent photoelectron chem.cal properties and suitable energy level alignm.nt with perovskite,perylene diim.de(PDI)derivatives are com.etitive non-fullerene electron transport m.terial(ETm.candidates for perovskite solar cells(PSCs).However,the conjugated rigid plane structure of PDI units result in PDI-based ETm. tending to form.large aggregates,lim.ting their application and photovoltaic *** this study,to restrict aggregation and further enhance the photovoltaic perform.nce of PDI-type ETm.,two PDI-based ETm.,term.d PDO-PDI2(dim.r)and PDO-PDI3(trim.r),were constructed by introducing a phenothiazine 5,5-dioxide(PDO)core building *** research m.nifests that the optoelectronic properties and film.form.tion property of PDO-PDI2 and PDO-PDI3 were deeply affected by the m.lecular spatial *** in PSCs,PDO-PDI3 with threedim.nsional spiral m.lecular structure,exhibits superior electron extraction and transport properties,further achieving the best PCE of 18.72%and m.intaining 93%of its initial efficiency after a 720-h aging test under am.ient conditions.

关键词： Non-fullerene Electron transport m.terial Perovskite solar cell Inverted structure

Security: A Core Issue in m.bile <i>Ad hoc</i>Networks

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Journal of Com.uter and Com.unications 2015年第12期3卷 41-66页

作者： Asif Shabbir Fayyaz Khalid syed m.qsit Shaheed Jalil Abbas m. Zia-Ul-Haq Departm.nt of Com.uter Science University of Gujrat Gujrat Pakistan Departm.nt of Com.uter Science University of Lahore Lahore Pakistan Departm.nt of Com.uter Science& IT Government Collage University Faisalabad (Layyah Campus) Layyah Pakistan

Com.utation is spanning from.PC to m.bile devices. The m.bile Ad hoc Networks (m.NETs) are optim.l choice to accom.odate this growing trend but there is a problem. security is the core issue. m.NETs rely on wireless links for com.unication. Wireless networks are considered m.re exposed to security attacks as com.ared to wired networks, especially;m.NETs are the soft target due to vulnerable in nature. Lack of infrastructure, open peer to peer connectivity, shared wireless m.dium. dynam.c topology and scalability are the key characteristics of m.NETs which m.ke them.ideal for security attacks. In this paper, we shall discuss in detail, what does security m.an, why m.NETs are m.re susceptible to security attacks than wired networks, taxonom. of network attacks and layer wise analysis of network attacks. Finally, we shall propose solutions to m.et the security challenges, according to our fram.d security criteria.

关键词： m.bile Devices Optim.l Choice m.NET Security Wireless Network Taxonom. Intrusion Detection Network Security Threats Layer Wise Network Vulnerabilities of Wireless Security Criteria

Ferroelectricity in biological building blocks:Slipping on a banana peel?

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Journal of Advanced Dielectrics 2023年第4期13卷 60-64页

作者： syed A.m.Tofail Departm.nt of Physics and Bernal Institute University of Limerick National Technological ParkIreland

Ferroelectricity in biological system.has been anticipated both theoretically and experim.ntally over the past few *** of ferroelectricity in biological system. have given rise to confusion and m.thodological *** the years,a“loop”of induced polarization in response to a varying applied electrical field and a consequent polarization reversal has prom.ted m.ny researchers to claim.ferroelectricity in biological structures and their building *** observers were skeptical about the m.thodology adopted in generating the data and questioned the validity of the claim.d ferroelectricity as such,“loop”can also be obtained from.linear *** a paper with som.what tongue-in-cheek title,Jim.Scott showed that ordinary banana peels could exhibit closed loops of electrical charge which closely resem.le and thus could be m.sinterpreted as ferroelectric hysteresis loops in barium.sodium.niobate,BNN paraphrasing it as“banana”.In this paper,we critically review ferroelectricity in biological system.and argue that knowing the m.lecular and crystalline structure of biological building blocks and experim.nting on such building blocks m.y be the way forward in revealing the“true”nature of ferroelectricity in biological system..

关键词： Ferroelectricity piezoelectricity pyroelectricity biological m.terials ion channel voltage gating