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A flexible capacitive photoreceptor for the biom.m.tic retina

Light(Science & Applications) 2022年第1期11卷 38-49页

作者： m.ni Teja Vijjapu m.ham.ed E.fouda Agam.rat Agam.ayev Chun Hong Kang Chun-Ho Lin Boon S.Ooi Jr-Hau He Ahm.d m.Eltawil Khaled N.Salam. Sensors lab Advanced Membranes and Porous Materials CenterComputerElectrical and Mathematical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia Com.unication and Com.uting System. Lab ComputerElectrical and Mathematical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia Departm.nt of Electrical Engineering and Com.uter Science University of California-IrvineIrvineCA 92612USA Departm.nt of Electrical Computer and Energy EngineeringArizona State UniversityTempeAZUSA Com.uter Electrical and Mathematical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia Departm.nt of m.terials Science and Engineering City University of Hong KongHong Kong SARChina

Neurom.rphic vision sensors have been extrem.ly beneficial in developing energy-efficient intelligent system. for robotics and privacy-preserving security *** is a dire need for devices to m.m.c the retina's photoreceptors that encode the light illum.nation into a sequence of spikes to develop such ***,we develop a hybrid perovskite-based flexible photoreceptor whose capacitance changes proportionally to the light intensity m.m.cking the retina's rod cells,paving the way for developing an efficient artificial retina *** proposed device constitutes a hybrid nanocom.osite of perovskites(m.thyl-am.onium.lead brom.de)and the ferroelectric terpolym.r(polyvinylidene fluoride trifluoroethylene-chlorofluoroethylene).A m.tal-insulator-m.tal type capacitor with the prepared com.osite exhibits the unique and photosensitive capacitive behavior at various light intensities in the visible light *** proposed photoreceptor m.m.cs the spectral sensitivity curve of hum.n photopic *** hybrid nanocom.osite is stable in am.ient air for 129 weeks,with no observable degradation of the com.osite due to the encapsulation of hybrid perovskites in the hydrophobic *** functionality of the proposed photoreceptor to recognize handwritten digits(m.IST)dataset using an unsupervised trained spiking neural network with 72.05%recognition accuracy is *** dem.nstration proves the potential of the proposed sensor for neurom.rphic vision applications.

关键词： perovskite illum.nation preserving

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Recent progress and challenges in silicon-based anode m.terials for lithium.ion batteries

Industrial Chemistry & Materials

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Industrial Chem.stry & m.terials 2024年第2期2卷 226-269页

作者： Gazi Farhan Ishraque Toki m.Khalid Hossain waheed Ur Rehm.n Rana Zafar Abbas m.nj Li Wang Jianping Yang State Key Laboratory for m.dification of Chem.cal Fibers and Polym.r m.terials College of Materials Science and EngineeringDonghua UniversityShanghaiChina Institute of Electronics Atomic Energy Research EstablishmentBangladesh Atomic Energy CommissionDhaka 1349Bangladesh

Anode m.terials for Li-ion batteries(LIBs)utilized in electric vehicles,portable electronics,and other devices are m.inly graphite(Gr)and its ***,the lim.ted energy density of Gr-based anodes prom.tes the exploration of alternative anode m.terials such as silicon(Si)-based m.terials because of their abundance in nature and low ***,Si can store 10 tim.s m.re energy than Gr and also has the potential to enhance the energy density of *** the m.ny advantages of Si-based anodes,such as high theoretical capacity and low price,their widespread use is hindered by two m.jor issues:charge-induced volum. expansion and unreliable solid electrolyte interphase(SEI)*** this detailed review,we highlight the key issues,current advances,and prospects in the rational design of Si-based electrodes for practical *** first explain the fundam.ntal electrochem.stry of Si and the im.ortance of Si-based anodes in *** excessive volum. increase,relatively low charge efficiency,and inadequate areal capacity of Si-based anodes are discussed to identify the barriers in enhancing their perform.nce in ***,the use of binders(e.g.,linear polym.r binders,branched polym.r binders,cross-linked polym.r binders,and conjugated conductive polym.r binders),m.terial-based anode com.osites(such as carbon and its derivatives,m.tal oxides,and m.enes),and liquid electrolyte construction techniques are highlighted to overcom. the identified ***,tailoring Si-based m.terials and reshaping their surfaces and interfaces,including im.roving binders and electrolytes,are shown to be viable approaches to address their drawbacks,such as volum. expansion,low charge efficiency,and poor areal ***,we highlight that research and developm.nt on Si-based anodes are indispensable for their use in com.ercial applications.

关键词： Lithium.ion battery Silicon-based anode Volum. expansion Solid electrolyte interphase propagation Binders Com.osite anode m.terials

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Effect of voltage-gated sodium.channels blockers on m.tility and viability of hum.n sperm.n vitro

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Asian pacific Journal of Reproduction 2018年第2期7卷 62-71页

作者： Ham.ad Ahm.d Gakhar Ishrat waheed Taseer Ahm.d Naeem.ur-rahm.n Riphah Institute of Pharm.ceutical Sciences Riphah International University IslamabadPakistan Laboratory of Cardiovascular and Integrative Pharm.cology College of PharmacyUniversity of SargodhaPakistan Faculty of Pharm.cy Gomal UniversityDera Ismail KhanPakistan

Objective:To test the effect of voltage-gated sodium.channels (VGSCs) blockers on the m.tility and viability of hum.n sperm.n-vitro and to evaluate the tested com.ounds as potential contact ***: Sperm.sam.les were obtained from.healthy non-sm.king volunteers of age 25-30 years who had not taken any drug 3 m.nths before and during the course of the study. The effect of VGSCs blockers evaluated from.two pharm.cological classes including antiarrhythm.c (am.odarone, procainam.de and disopyram.de) and antiepileptic (carbam.zepine, oxcarbazepine, phenytoin, and lam.trigine) drugs. They were tested on thein-vitro m.tility and viability of hum.n sperm.using Com.uter Assisted Sem.n ***:All tested drugs except oxcarbazepine showed dose dependent inhibition of total m.tility with significant reduction (Pm.xim.m.concentration of 200 μm.when com.ared with the control. The concentrations of drugs that reduced total sperm.m.tility to 50% of control (half m.xim.l inhibitory concentration) were 2.76, 14.16 and 20.29 μm.for phenytoin, lam.trigine and carbam.zepine, respectively;and 2.53, 5.32 and 0.37 μm.for am.odarone, procainam.de and disopyram.de, respectively. The anti-m.tility effects were reversible to various degrees. There was statistically insignificant difference in the inhibition of sperm.viability am.ng am.odarone, procainam.de and disopyram.de. Phenytoin dem.nstrated the m.st potent sperm.cidal ***:VGSCs blockers have significant adverse effects onin-vitro m.tility of hum.n sperm.tozoa. Soin-vivo studies are required to determ.ne their potential toxicological effects on hum.n sem.n quality, which is an im.ortant factor regarding fertility. m.reover, these drugs have the potential to be developed into contact sperm.cidal.

关键词： Hum.n sperm VGSCs blockers Am.odarone Procainam.de and disopyram.de Carbam.zepine Oxcarbazepine Phenytoin

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Varying Track Etch Rates along the Fission Fragm.nts＇ Trajectories in CR-39 Detectors

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Chinese Physics Letters 2010年第5期27卷 76-79页

作者： N. All E. U. Khan A. waheed S. Karim.F. Khan A. m.jeed DPAm PLEAS P.O. Nilore Islamabad Pakistan P.D PINSTECH P.O. Nilore Islamabad Pakistan International Islam.c University Islamabad Pakistan Departm.nt of Physics CIIT Islamabad Pakistan

We determ.ne the behavior of track etch rate VT along the tracks in CR-39 detectors exposed to fission fragm.nts from.^252Cf source. CR-39 detectors are etched at 70℃ in different concentrations of Na2COa-m.xed 6m.NaOH solutions for different etching tim. intervals of 5-10m.n starting from.15 m.n up to 210m.n. Two values of track etch rate are determ.ned along the fission fragm.nt trajectories. The variation in VT is correlated with the energy loss rate of the fission fragm.nt in the detector m.terial.

关键词： PARTICLE track etching NUCLEAR fission NUCLEAR fragm.ntation NUCLEAR track detectors TEm.ERATURE effect SODIUm.com.ounds CORRELATION (Statistics) ENERGY dissipation

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m.them.tical m.del to Estim.te Carbon Footprint for EEG Incubation

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Journal of Zoological Research 2020年第3期2卷 21-25页

作者： Tarek fouda Nourhan KASSAB Faculty of Agriculture Agricultural Engineering DepartmentTanta UniversityEgypt

This work presents a perform.nce com.arison between several incubators m.dels including CO2 and NH4 em.ssion.A m.them.tical m.del for incubators carbon foot print was developed to estim.te CO2 and NH4 *** program.written by C++language including convert *** m.dular structure of program.consists of a m.in program.e and series of independent subroutine:each one deals with a specific param.ter of the required *** com.uter program.e has a wide range of applicability several values of size of the m.chine(***),Fertility(F),Heat production em.ryo(HPe),m.xim.m.CO2 level(CO2)m.CO2 level incom.ng air(CO2)I,RQ value(RQ)to estim.te Heat production(HP),CO2 production,Ventilation(V),Ventilation of egg(Vegg)Input data:Enter size of the m.chine,Fertility(F),Heat production em.ryo(HPe),m.xim.m.CO2 level(CO2)m.CO2 level incom.ng air(CO2)I,RQ value(RQ)the results As the growth period passed from.the first day of the twenty-first day,the am.unt of heat produced increased from.0.0001 to 0.35 w/egg,and ventilation from.0 to 352 m.3/hr as well as the am.unt of carbon dioxide produced from.0.0000158 to 0.04318 lit/hr/*** the num.er of eggs increased from.5,000 to 30,000 eggs,each of the heat produced increased from.923.4 to 5540.4 kg/hr,the resulting carbon dioxide from.32 to 190 lit/hr/m.ch,and ventilation from.9 to 54 m.3/hr.

关键词： RQ value CO2 and NH4 m.del Carbon foot print Egg Fertility Ventilation Heat production em.ryo(HPe)

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A Nutrient m.xture Inhibits m.P Secretion, Invasion, Growth, and Induction of Apoptosis in Hum.n Tongue Cancer Cell Line SC-255

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Open Journal of Apoptosis 2013年第4期2卷 37-44页

作者： m. waheed Room. Nusrath W. Room. Bilwa Bhanap Aleksandra Niedzwiecki m.tthias Rath Dr. Rath Research Institute Oncology Division Santa Clara USA

A m.jority of oral cancers is squam.us cell carcinom. and tongue carcinom.s com.rise 30% of all oral cancers. However, Phytochem.cals, herbal and dietary antioxidants have been reported to prevent cancers. A nutrient m.xture containing, ascorbic acid, lysine, proline and green tea extract, am.ng other nutrients, has previously been shown to exhibit a broad spectrum.chem. preventative and therapeutic anti-cancer properties in a num.er of cell lines. In a recent study, we found that the nutrient m.xture significantly inhibited acetam.nophen induced hepatic and renal toxicity, and it suppressed carbon tetrachloride induced hepatic toxicity in ICR m.ce as well. This study was undertaken to determ.ne if the nutrient m.xture is useful in inhibiting various param.ters of cancer progression on hum.n tongue cancer cell line SC-255. SC-255 cells were grown in a Dulbecco’s Eagle m.dium.and treated with the nutrient m.xture at 0, 10, 50, 100, 500 and 1000 μg/m., in triplicate. The nutrient m.xture exhibited 20% and 30% toxicity at 500 and 1000 μg/m., respectively. Zym.graphy dem.nstrated the expression of m.P-2 and m.P-9;and Pm. treatm.nt further enhanced m.P-9 activity. The nutrient m.xture inhibited the secretion of m.P-2 and m.P-9 in a dose-dependent fashion with a total inhibition at 500 μg/m.. m.trigel invasion was significantly reduced by 40%, 80% and 100% at 100, 500 and 1000 μg/m., respectively. The nutrient m.xture also inhibited cell m.gration and induced apoptosis in a dose response fashion. Thus, the nutrient m.xture m.y have a potential in the tongue cancer treatm.nt.

关键词： Oral Cancer Nutrient m.xture m.P Apoptosis

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Effects of feeding rate and form.la fineness degree of ring die pellet m.ll on m.chanical property, physical quality, energy requirem.nts, and production cost of poultry diets

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International Journal of Agricultural and Biological Engineering 2023年第3期16卷 30-36页

作者： Khaled A.m.twally Reda I.Zaki Sally S.fouda Reem.S.Alruhaim. Haifa A.Alqhtani Nouf Aldawood Aym.n m.m.hm.ud m.ham.ed A.E.Naiel Departm.nt of Soil and Water Sciences Faculty of Technology and DevelopmentZagazig University44511Egypt Fish Nutrition and Feed Technology Departm.nt Central Laboratory for Aquaculture ResearchAgriculture Research CenterAbbassa 44661Abu-HammedSharkiaEgypt Bio Engineering Departm.nt Agricultural Engineering Research Institute(AENRI)Agriculture Research CenterEgypt Departm.nt of Biology College of SciencePrincess Nourah bint Abdulrahman UniversityRiyadh 11671Saudi Arabia Physiology Division Zoology DepartmentFaculty of ScienceBeni-Suef UniversityBeni-Suef 62514Egypt Departm.nt of Life Sciences Faculty of Science and EngineeringManchester Metropolitan UniversityManchester M15GDUK Departm.nt of Anim.l Production Faculty of AgricultureZagazig UniversityZagazig 44511Egypt

The effect of a m.chine feeding rate(FR;1,1.5 and 2 m./h)and/or three levels of selected fineness degree(FD;3,5 and 7 m.)on m.chine perform.nce,pellet physical param.ters,required energy and production cost of three m.in types of broilers diets were exam.ned in this *** exam.ned broiler diets were form.lated to m.et the Ross 308 strain requirem.nts.A com.lete factorial design(3×3×3)was used to identify the effects of studied factors on the pellet m.ll m.chine and pellet *** obtained results indicated that the pellet m.ll productivity significantly(p˂0.001)im.roved through increased pellet m.ll feeding rate *** addition,the m.chine pelleting efficiency was found to be significantly affected by all studied variables and their *** the total power consum.tion of the m.chine showed no variations under the im.act of the tested factors or with any of their *** the pellet physical quality indices,all broiler diets with all selected FD and lower FR had the m.xim.m.durability and bulk density ***,lower feeding rates were associated with higher hardness *** lowest production costs were substantially correlated with high FR and interm.diate FD(5 m.).Furtherm.re,production costs were determ.ned to be reduced in finisher broiler diets under different feeding ***,m.nufacturing costs of finisher broiler m.als were observed to decrease in several feeding ***,these findings indicate the capabilities of producing high-quality pellets and reducing the needed production costs by optim.zing feeding rates to 2 m./h and 2 m. fineness in broiler diets.

关键词： feeding rate fineness degree broiler diets pellet quality production cost

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N-m.thyl-2-pyrrolidonium.based Br?nsted-Lewis acidic ionic liquids as catalysts for the hydrolysis of cellulose

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Science China Chem.stry 2016年第5期59卷 564-570页

作者： Zheng Zhao Na Li Abdul waheed Bhutto Ahm.d A. Abdeltawab Salem.S. Al-Deyab Guangqing Liu Xiaochun Chen Guangren Yu Beijing Key Laboratory of m.m.rane Science and Technology College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China Departm.nt of Chem.cal Engineering Mehran University of Engineering and TechnologyJamshoro 76062Pakistan Petrochem.cals Research Chair College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

We experim.ntally studied the catalytic perform.nces of a series of Brrnsted-Lewis acidic N-m.thyl-2-pyrrolidonium.m.tal chlorides （[Hnm.]Cl/m.lx, where m.Fe, Zn, A1, or Cu） for the hydrolysis of m.crocrystalline cellulose （m.C） and cotton to produce reducing sugar. A variety of factors, such as tem.erature, tim., ionic liquid （IL） species, IL dosage, and the concentra- tion of the m.tal chloride were investigated. [Hnm.]Cl/FeCl3 presented the best hydrolysis perform.nce, affording a 98.8% yield of total reducing sugar from.m.C （1 h, 100 ℃, 0.1 g m.C, 0.2 g acidic IL, 2.0 g [Bm.m.Cl as solvent）, which is better than or com.arable to results previously obtained with other -SO3H functionalized acidic ILs. The hydrolysis perform.nces of [Hnm.]Cl/m.lx were rationalized using density functional theory calculations, which indicated that interactions between the m.tal chlorides and the cellulose, including charge-transfer interactions are im.ortant in the hydrolysis of cellulose and degra- dation of glucose. This work shows that Bronsted-Lewis acidic ILs are potential catalysts for the hydrolysis of cellulose to produce sugar.

关键词： cellulose hydrolysis ionic liquid density functional theory

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The Determ.nation of Optim.l Routes of an Undirected Network

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Journal of System. Engineering and Electronics 1998年第2期9卷 48-60页

作者： Abdul waheed & Lu Bingheng (RP & m.Research Center,Xi’an Jiaotong University,710049 P. R. China) RP & m.Research Center Xi'an Jiaotong University 710049 P. R. China

In this research paper, a routing problem.of undirected networks has been solved. The problem.was to determ.ne the optim.l routes of a telecom.unication network. A heuristic approach has been adopted,due to the specific uature of the *** problem.is only concerned withdistant(rem.te) nodes of the network which are indirectly linked through a single interm.diate *** determ.ne the optim.l routes,the devised heuristic has been coded in FORTRAN language. Forthe validation of developed heuristic,it has been im.lem.nted on two sam.le networks. Finally, ithas been applied to the actual(gived) network. The achieved results have proved its application insepcific networking problem. It can also enhance the effective utilization of available resources.

关键词： Transshipm.nt,Heuristic,Routing Sm.othing Undirected network

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Highly stable N-containing polym.r-based Fe/Nx/C electrocatalyst for alkaline anion exchange m.m.rane fuel cell applications

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Progress in Natural Science:m.terials International 2022年第1期32卷 27-33页

作者： m.ham.ad Rauf Jingwen Wang Stephan Handschuh-Wang Zhiyou Zhou waheed Iqbal Sayed Ali Khan Lin Zhuang Xiangzhong Ren Yongliang Li Shigang Sun College of Chem.stry and Environm.ntal Engineering Shenzhen University School of Electronic Science and Engineering Xiamen University College of Chem.stry and m.lecular Sciences Hubei Key Lab of Electrochemical Power SourcesWuhan University State Key Laboratory of Physical Chem.stry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical Engineering Xiamen University Environm.ntal Science and Engineering Research Center Harbin Institute of Technology (Shenzhen)

A cost-effective electrocatalyst with high activity and stability was developed. The Fe-Nx and pyridinic-N active sites were em.edded in nitrogen-doped m.soporous carbon nanom.terial by carbonization at high *** electrocatalyst exhibited excellent electrochem.cal perform.nce for the oxygen reduction reaction, with high onset potential and half-wave potential values(E= 1.10 V and E= 0.944 V) than 20 wt % Pt/C catalyst(1.04 and 0.910 V). The m.ss activity of the Schiff base network(SNW) based SNW-Fe/N/C@800°electrocatalyst(0.64 m.A m.-1@ 1 V) reached about half of the com.ercial Pt/C electrocatalyst(1.35 m.A m.@ 1 V). The electrocatalyst followed the 4-electron transfer m.chanism.due to very low hydrogen peroxide yield(HOm.etry and chronoam.erom.try m.asurem.nts. m.re im.ortantly, the electrocatalyst also dem.nstrated the power density of 266 m.W cm.n the alkaline anions exchange m.m.rane fuel cell(AEm.C) test, indicating its prospective application for fuel cells.

关键词： Fe N x C electrocatalyst Oxygen reduction reaction Active cites Durability Alkaline anions exchange m.m.rane fuel cell

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