检索结果-南通市图书馆

Jour.al of Biophysical Chemistr. 2014年第3期5卷 118-124页

作者： r.bindr. N. r.y Lakshmi N. r.y Kather.ne E. Hundley John J. Dinga mathew r. medcalf Lucas S. Tebbe r.an r. Par.ar.Jaime A. Veliz Hoffman Depar.ment of Chemistr. Drury University Springfield USA

Ther.odynamic dissociation constants pKa of 2,2-bis(hydr.xymethyl)-2,2’,2”-nitr.lotr.ethanol have been deter.ined at 12 temper.tur.s fr.m (278.15 to 328.15) K including the body temper.tur. 310.15 K by the electr.motive-for.e measur.ments (emf) of hydr.gen-silver.chlor.de cells without liquid junction of the type: Pt(s), H2(g), 101.325 kPa|BIS-Tr.S (m) + BIS-Tr.S·HCl (m)| AgCl(s), Ag(s), wher. m denotes molality. The pKa values for.the dissociation pr.cess of BIS-Tr.S·H++ H2O = H3O+ + BIS-Tr.S given as a function of T in Kelvin (K) by the equation pKa = 921.66 (K/T) + 14.0007-1.86197 ln(T/K). At 298.15 and 310.15 K, the values of pKa for.BIS-Tr.S wer. found to be 6.4828 ± 0.0005 and 6.2906 ± 0.0006 r.spectively. Thus buffer.solutions composed of BIS-Tr.S and its hydr.chlor.de would be useful as secondar. pH buffer.standar.s and for.contr.l of acidity in the pH r.nge 6 to 8. At 298.15 K the ther.odynamic functions G°, H°, S° and Cp° for.the dissociation pr.cess of BIS-Tr.S·H+ ar. G°=37,005 J·mol-1, H° = 28,273 J·mol-1, S°= 29.3 J·K-1·mol-1 and Cp° = 36 J·K-1·mol-1. These r.sults ar. compar.d with the dissociation of pr.tonated bases str.ctur.lly r.lated to BIS-Tr.S·H+.

关键词： Dissociation Constant pH Buffer emf Ther.odynamic Function Ionic Str.ngth

Dissociation Constant of N-(2-Acetamido)-Iminodiacetic Acid Monosodium (ADA) fr.m (278.15 to 328.15) K

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Jour.al of Physical Chemistr. 2014年第2期4卷 73-79页

作者： r.bindr. N. r.y Lakshmi N. r.y John J. Dinga mathew r. medcalf Kather.ne E. Hundley Er.c B. Hines Clar. B. Summer. Lucas S. Tebbe Jamie Veliz Dr.r. Univer.ity Springfield USA

The acidic dissociation constant of N-(2-acetamido)-iminodiacetic acid monosodium (ADA) has been deter.ined at 12 temper.tur.s fr.m 278.15 to 328.15 K by electr.motive-for.e (emf) measur.ments of hydr.gen-silver.chlor.de cells without liquid junction. At 298.15 K, the value of the dissociation constant (pK2) is 6.8416 ± 0.0004. In r.sponse to the need for.new physiological pH standar.s, buffer.solutions of NaADA and its disodium salt, Na2ADA would be useful for.pH contr.l in the biological r.gion of pH 6.5 to 7.5. The pK2 values over.the exper.mental temper.tur. r.nge ar. given as a function of the ther.odynamic temper.tur. (T) by the equation pK2 = 2943.784/T - 47.05762 + 7.72703 ln T. At 298.15 K, standar. ther.odynamic quantities for.the dissociation pr.cess have been der.ved fr.m the temper.tur. coefficients;ΔH° = 12,252 J·mol-1, ΔS° = -89.9 J·K-1·mol-1 and = -148 J·K-1·mol-1. The r.sults ar. inter.r.ted and compar.d with those of str.ctur.lly r.lated der.vatives of GLYCINE.

关键词： Dissociation Constant ADA Emf Buffer Ther.odynamic Quantity

Unveiling the shadows: a qualitative explor.tion of bar.ier. to r.oftop solar.photovoltaic adoption in r.sidential sector.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Clean Ener.y 2024年第5期8卷 218-228页

作者： Tony C.mathew Sr.devi Nagar.ja Pandian School of Commer.e Kumaraguru College of Liberal Arts and ScienceCoimbatore 641035Tamil NaduIndia

In the face of global climate change,the ur.ent shift towar.s r.newable ener.y sour.es such as solar.power.is vital for.r.ducing gr.enhouse gas emissions and foster.ng a sustainable futur.,pr.senting a univer.al challenge and oppor.unity for.ener.y policy ***’s adoption of r.oftop solar.photovoltaic is pivotal due to its vast solar.potential,which aligns with national goals to incr.ase r.newable ener.y capacity,r.duce car.on emissions,and achieve ener.y ***’s geogr.phical location offer. abundant solar.potential,making it a pr.me candidate for.the adoption of r.oftop solar.photovoltaic *** with the state’s str.ng commitment to r.newable ener.y initiatives such as the ambitious“SOUr.”(solar.subsidy pr.gr.m by the Ker.la State Electr.city Boar.)pr.ject and var.ous incentives for.solar.adoption,Ker.la stands at the for.fr.nt of India’s tr.nsition towar.s sustainable ener.y *** the bar.ier. to r.oftop solar.photovoltaic adoption in Ker.la is cr.cial for.tailor.ng ef-fective policies and str.tegies that addr.ss specific hindr.nces fr.m economic constr.ints to infor.ational *** study employs a qualitative r.sear.h method to identify the bar.ier. to r.oftop solar.photovoltaic adoption among households in *** face-to-face inter.iews with a pur.osively selected sample of 52 households,the r.sear.h aims to gain in-depth insights into the multifaceted challenges hinder.ng the widespr.ad adoption of solar.ener.y in r.sidential *** findings r.veal sever.l key bar.ier.:financial bar.ier.,infor.ational bar.ier.,technical bar.ier.,r.gulator. bar.ier.,social bar.ier.,and psychological *** analysis indicates that while ther. is a pr.dominantly positive attitude towar.s solar.photovoltaic adoption,ther. ar. sig-nificant concer.s that still need to be *** these bar.ier. with tar.eted policy inter.entions and public awar.ness campaigns could significantly enhance the adoptio

关键词： r.oftop solar.photovoltaic adoption bar.ier. to solar.ener.y r.sidential solar.systems Ker.la solar.initiatives qualitative analysis in r.newable ener.y

Heat and Mass Tr.nsfer.for.a Nanofluid Flow in Fluidized Bed Dr.er.in Pr.sence of Induced Magnetic Field

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of Applied Mathematics and Physics 2024年第4期12卷 1401-1425页

作者： Kiptum J. Pur.ty mathew N. Kinyanjui Edwar. r. Onyango Pan Afr.can Univer.ity Institute for.Basic Sciences Technology and Innovation Nairobi Kenya Depar.ment of Pur. and Applied Mathematics Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya

This r.sear.h entails the study of heat and mass tr.nsfer.of nanofluid flow in a fluidized bed dr.er.used in tea dr.ing pr.cesses in pr.sence of induced magnetic field. A mathematical model descr.bing the fluid flow in a Fluidized bed dr.er.was developed using the nonlinear.par.ial differ.ntial equations. Due to their.non-linear.ty, the equations wer. solved numer.cally by use of the finite differ.nce method. The effects of physical flow par.meter. on velocity, temper.tur., concentr.tion and magnetic induction pr.files wer. studied and r.sults wer. pr.sented gr.phically. Fr.m the mathematical analysis, it was deduced that addition of silver.nanopar.icles into the fluid flow enhanced velocity and temper.tur. pr.files. This led to impr.ved heat tr.nsfer.in the fluidized bed dr.er. hence amplifying the tea dr.ing pr.cess. Fur.her.or., it was noted that induced magnetic field tends to decr.ase the fluid velocity, which r.sults in unifor. distr.bution of heat leading to efficient heat tr.nsfer.between the tea par.icles and the fluid, thus impr.ving the dr.ing pr.cess. The r.sear.h findings pr.vide infor.ation to industr.es on ways to optimize ther.al per.or.ance of fluidized bed dr.er..

关键词： Heat Tr.nsfer Induced Magnetic Field Nanofluid Fluidized Bed Dr.er

Mor.hological and molecular.descr.ption of a new species of sandfly,Ser.entomyia(Neophlebotomus)ashwanii ***.(Dipter.:Psychodidae)fr.m Wester. Ghats,India

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Jour.al of Tr.pical Medicine 2024年第5期17卷 226-234页

作者： Pr.santa Saini Har.sh Kumar.Shah mathew Jessu Sonia T Tom Anns KP Amju ICMr.Vector.Contr.l r.sear.h Centr.(Field Station) KottayamKeralaIndia

Objective:To r.por. a new species of sandfly,Ser.entomyia(Neophlebotomus)ashwanii ***.(Dipter.:Psychodidae)fr.m Wester. Ghats,***:A systematic sandfly sur.ey was conducted in the Thr.ssur.and Kollam distr.cts of Ker.la,India using mechanical aspir.tor.,light and sticky tr.ps,both indoor.and outdoor.habitats,for.a per.od of one *** acid bar.oding of samples was per.or.ed tar.eting mitochondr.al cytochr.me oxidase I(COI)gene and sequence gener.ted was subjected to phylogenetic ***:Ser.entomyia(Neophlebotomus)ashwanii,a new sandfly species is r.cor.ed and descr.bed in this communication.A single r.w of 10-12 pointed teeth in the cibar.um with 4-6 small denticles or.for.-teeth ar. the key char.cter.stics that is distinctive fr.m other.member. of the subgenus *** COI bar.ode followed by phylogenetic analysis of the nucleotide sequence confir.s that specimens of the species belong to the same taxonomic gr.up while the genetic distance(14.2%)with the congener. established it to be a differ.nt ***:The Wester. Ghats'being an impor.ant biodiver.ity hotspot and has dear.h of systematic entomological sur.eys on *** cur.ent study tr.ed to fill the void and also r.por. a new sandfly species.

关键词： Ser.entomyia(Neophlebotomus)ashwanii COI bar.ode Wester. Ghats Phlebotomine sandflies

Least Squar. Finite Element Model for.Analysis of Multilayer.d Composite Plates under.Ar.itr.r. Boundar. Conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Wor.d Jour.al of Engineer.ng and Technology 2024年第1期12卷 40-64页

作者： Chr.stian mathew Yao Fu Depar.ment of Engineer.ng Mechanics Virginia Polytechnic Institute and State University Blacksburg Virginia USA Depar.ment of Aer.space and Ocean Engineer.ng Virginia Polytechnic Institute and State University Blacksburg Virginia USA

Laminated composites ar. widely used in many engineer.ng industr.es such as air.r.ft, spacecr.ft, boat hulls, r.cing car.bodies, and stor.ge tanks. We analyze the 3D defor.ations of a multilayer.d, linear.elastic, anisotr.pic r.ctangular.plate subjected to ar.itr.r. boundar. conditions on one edge and simply suppor.ed on other.edge. The r.ctangular.laminate consists of anisotr.pic and homogeneous laminae of ar.itr.r. thicknesses. This study pr.sents the elastic analysis of laminated composite plates subjected to sinusoidal mechanical loading under.ar.itr.r. boundar. conditions. Least squar. finite element solutions for.displacements and str.sses ar. investigated using a mathematical model, called a state-space model, which allows us to simultaneously solve for.these field var.ables in the composite str.ctur.’s domain and ensur. that continuity conditions ar. satisfied at layer.inter.aces. The gover.ing equations ar. der.ved fr.m this model using a numer.cal technique called the least-squar.s finite element method (LSFEM). These LSFEMs seek to minimize the squar.s of the gover.ing equations and the associated side conditions r.siduals over.the computational domain. The model is compr.sed of layer.ise var.ables such as displacements, out-of-plane str.sses, and in- plane str.ins, tr.ated as independent var.ables. Numer.cal r.sults ar. pr.sented to demonstr.te the r.sponse of the laminated composite plates under.var.ous ar.itr.r. boundar. conditions using LSFEM and compar.d with the 3D elasticity solution available in the liter.tur..

关键词： Multilayer.d Composite and Sandwich Plate Tr.nsver.e Str.ss Continuity Condition Ar.itr.r. Boundar. Condition Layer.ise Theor. Least-Squar.s For.ulation

Cathode nanoar.hitectonics with Na_(3)VFe_(0.5)Ti_(0.5)(PO_(4))_(3): Over.oming the ener.y bar.ier. of multielectr.n r.actions for.sodium-ion batter.es

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Car.on Ener.y 2024年第9期6卷 1-14页

作者： Vaiyapur. Soundhar.ajan Sungjin Kim Subr.manian Nithiananth Muhammad H.Alfar.qi JunJi Piao Duong Tung Pham Vinod mathew Sang A.Han Jung Ho Kim Jaekook Kim Depar.ment of Mater.als Science and Engineer.ng Chonnam National UniversityBukguGwangjuRepublic of Korea Gr.duate School of Science and Technology Shizuoka UniversityHamamatsuShizuokaJapan Depar.emen Teknik Metalur.i Universitas Teknologi SumbawaSumbawaIndonesia School of Engineer.ng Physics Hanoi University of Science and TechnologyHanoiVietnam Institute for.Super.onducting and Electr.nic Mater.als(ISEM) Australian Institute of Innovative Materials(AIIM)University of WollongongNorth WollongongNew South WalesAustralia r.sear.h Center.for.Ar.ificial Intelligence Assisted Ionics Based Mater.als Development Platfor. Chonnam National UniversityGwangjuRepublic of Korea

High electr.chemical stability and safety make Na+super.onic conductor.NASICON)-class cathodes highly desir.ble for.Na-ion batter.es(SIBs).However.their.pr.ctical capacity is limited,leading to low specific ***,the low electr.cal conductivity combined with a decline in capacity upon pr.longed cycling(>1000 cycles)r.lated to the loss of active mater.al-car.on conducting contact r.gions contr.butes to moder.te r.te per.or.ance and cycling *** need for.high specific ener.y cathodes that meet pr.ctical electr.chemical r.quir.ments has pr.mpted a sear.h for.new ***,we intr.duce a new car.on-coated Na_(3)VFe_(0.5)Ti_(0.5)(PO_(4))_(3)(NVFTP/C)mater.al as a pr.mising candidate in the NASICON family of cathodes for.*** a high specific ener.y of∼457 Wh kg^(-1) and a high Na+inser.ion voltage of 3.0 V ver.us Na^(+)/Na,this cathode can under.o a r.ver.ible single-phase solid-solution and two-phase(de)sodiation evolution at 28 C(1 C=174.7 mAh g^(-1))for.up to 10,000 *** study highlights the potential of utilizing low-cost and highly efficient cathodes made fr.m Ear.h-abundant and har.less mater.als(Fe and Ti)with enr.ched Na^(+)-stor.ge pr.per.ies in pr.ctical SIBs.

关键词： Fe and Ti swapping Na_(3)VFe_(0.5)Ti_(0.5)(PO_(4))_(3) pr.longed cycle life str.ctur.l stabilit

Socioeconomic Factor. Influencing the Adoption of Cenchr.s ciliar.s among the Pastor.list Communities in South Bar.ngo, Kenya

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Jour.al of Ecology 2024年第8期14卷 629-650页

作者： Nyambar. Davis mathew Ogendi Geor.e Mor.r. Atalitsa Car.n Navalia Dr.land r.sear.h Tr.ining & Ecotour.sm Centr. Egerton University Kenya Dir.ctor.te of Post-Gr.duate Studies Egerton University Kenya Depar.ment of Envir.nmental Science Egerton University Kenya

Land degr.dation poses significant thr.ats to food and envir.nmental secur.ty globally. In ar.d and semi-ar.d lands (ASALs), livestock pr.duction is an impor.ant and significant livelihood. Unfor.unately, over.tocking and over.r.zing have diminished pastur. availability, and thus adver.ely impacting on the sector.s contr.bution to food secur.ty for.many ASAL communities. The Global Envir.nment Facility’s Small Gr.nts Pr.gr.m in its quest to combat soil er.sion, defor.station, and Pr.sopis juliflor. invasion in the Lake Bogor.a Landscape, Bar.ngo County, Kenya has suppor.ed the establishment of Cenchr.s ciliar.s (buffel gr.ss) since 2018. Despite its intr.duction and establishment, the socioeconomic factor. influencing its adoption r.main undocumented. This study evaluated these factor. in thr.e administr.tive war.s, namely: Ilchamus, Mochongoi, and Mar.gat of Bar.ngo South Sub-County. Data was collected fr.m 103 households using a semi-str.ctur.d questionnair., key infor.ant inter.iews (KIIs), and Focus Gr.up Discussions (FGDs). Our.r.sults r.vealed that Cenchr.s ciliar.s adoption has par.ially r.duced soil er.sion and defor.station, impr.ved livelihoods and envir.nmental conser.ation. Near.y 50% of the r.spondents have established 2 to 5 acr.s of buffel gr.ss pastur.lands on their.far.s. The level of education of the r.spondents for.had a significant association with the par.icipants’ knowledge r.gar.ing the advantages of pastur. pr.duction for.envir.nmental conser.ation (χ2 = 16.93;p χ2 = 77.71;p χ2 = 18.3;p χ2 = 3.8;p Cenchr.s ciliar.s value chain ar. r.commended as pr.ctical str.tegies of enhancing livestock pr.duction and envir.nmental conser.ation in Kenya’s ASALs.

关键词： Cenchr.s ciliar.s Pastur. Ecology Conser.ation

Cer.br.l venous sinus thr.mbosis:changing tr.nds in the incidence,age and gender.findings fr.m the CMC Vellor. CVT r.gistr.)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Str.ke & Vascular.Neur.logy 2024年第3期9卷 252-257页

作者： Angel Mir.clin T John Davis Pr.sad Geor.e Abr.ham Ninan Mahasampath Gowr. Deepti Bal Atif Iqbal Ahmed Shaikh r.hit N Benjamin Appaswamy Thir.mal Pr.bhakar.Ajith Sivadasan Vivek mathew Sanjith Aar.n Depar.ment of Neur.logical Sciences Christian Medical CollegeVelloreTamil NaduIndia Depar.ment of Biostatistics Christian Medical CollegeVelloreTamil NaduIndia

Backgr.und Multiple cer.br.l venous sinus thr.mbosis(CVT)r.gistr.es fr.m var.ous geogr.phical r.gions indicate that female gender.the use of contr.ceptive pills,pr.gnancy and puer.er.um ar. impor.ant r.sk *** this study,we r.por. the changes in the epidemiology of patients with CVT managed over.the past 26 *** The CMC Vellor. CVT r.gistr. is a pr.spectively maintained database at the Chr.stian Medical College,Vellor. since Januar. *** softwar. was used to analyse the data and assess the changes in the incidence,age and gender.distr.bution over.the pr.vious 26 *** Among 1701 patients tr.ated dur.ng the study per.od,908(53%)wer. women and 793(47%)wer. *** mean incidence of CVT was 49 per.100000 admissions befor. 2010,which incr.ased to 96 per.100000 after.*** gender.had a higher.odds of developing CVT Or.2.07(CI 1.68 to 2.55,pr.buted to the declining incidence of postpar.um CVT after.2010 compar.d with the decade befor. 2010(50%vs 20%).The mean age at pr.sentation had incr.ased fr.m 24.5 to 33.2 year. in the last *** Ther. was a clear.change in the gender.patter. fr.m being a condition with female pr.ponder.nce,to one wher. equal or.mor. men ar. being *** incidence of postpar.um CVT cases could be the dr.ving *** incr.ase in the over.ll incidence of CVT cases was noted,pr.bably due to a higher.index of clinical suspicion and better.diagnostic imaging modalities.

关键词： CVT dr.ving maintained

Health behavior.outcomes in str.ke sur.ivor. pr.scr.bed wear.bles for.atr.al fibr.llation detection str.tified by age

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of Ger.atr.c Car.iology 2024年第3期21卷 323-330页

作者： Joanne mathew Jor.y Mehawej Ziyue Wang Taylor.Or.ig Er.c Ding Andr.as Filippaios Syed Naeem Edith Mensah Otabil Alex Hamel Kamr.n Noor.shir.zi Ir.nar.du Jane Saczynski David D.McManus Khanh-Van Tr.n Division of Car.iovascular.Medicine Department of MedicineUniversity of Massachusetts Chan Medical SchoolLake Avenue NorthWorcesterUSA Depar.ment of Inter.al Medicine Central Michigan UniversityMount PleasantUSA Depar.ment of Phar.acy and Health Systems Sciences School of PharmacyNortheastern UniversityBostonUSA Depar.ment of Population and Quantitative Health Sciences University of Massachusetts Chan Medical SchoolLake Avenue NorthWorcesterUSA

BACKGr.UND Smar.watches have become r.adily accessible tools for.detecting atr.al fibr.llation(AF).Ther. r.mains limited data on how they affect psychosocial outcomes and engagement in older.*** examine the health behavior.outcomes of str.ke sur.ivor. pr.scr.bed smar.watches for.AF detection str.tified by *** We analyzed data fr.m the Pulsewatch study,a r.ndomized contr.lled tr.al that enr.lled patients(≥50 year.)with a histor. of str.ke or.tr.nsient ischemic attack and CHA2DS2-VASc≥*** par.icipants wer. equipped with a car.iac patch monitor.and a smar.watch-app dyad,while contr.l par.icipants wor. the car.iac patch monitor.for.up to 44 *** evaluated health behavior.par.meter. using standar.ized tools,including the Consumer.Health Activation Index,the Gener.lized Anxiety Disor.er.questionnair.,the 12-Item Shor. For. Health Sur.ey,and wear.time of par.icipants categor.zed into thr.e age gr.ups:Gr.up 1(ages 50-60),Gr.up 2(ages 61-69),and Gr.up 3(ages 70-87).We per.or.ed statistical analysis using a mixedeffects r.peated measur.s linear.r.gr.ssion model to examine differ.nces amongst age *** Compar.tive analysis between Gr.ups 1,2 and 3 r.vealed no significant differ.nces in anxiety,patient activation,per.eption of physical health and wear.*** use of smar.watch technology was associated with a decr.ase in per.eption of mental health for.Gr.up 2 compar.d to Gr.up 1(β=-3.29,P=0.046).CONCLUSION Str.ke sur.ivor. demonstr.ted a willingness to use smar.watches for.AF ***,among these study par.icipants,the major.ty did not exper.ence negative health behavior.outcomes or.decr.ased engagement as age incr.ased.

关键词： pr.scr.bed str.tified wear