检索结果-南通市图书馆

A Finite Element Model of Locked Plating in Femor.l Shaft Fr.ctur.s

Open Jour.al of Or.hopedics 2014年第4期4卷 104-112页

作者： Br.an E. Schwar.z Far.d M. L. Amir.uche Kwang Won Choi Alfonso Mejia Mar. Gonzalez jacob r. seiler College of Medicine University of Illinois at Chicago Chicago USA Depar.ment of Mechanical and Biomedical Engineer.ng University of Illinois at Chicago Chicago USA Depar.ment of Or.hopaedic Sur.er. University of Illinois at Chicago Chicago USA

Intr.duction: The Locking Compr.ssion Plate (LCP) system is a ver.atile technology that can be used either.thr.ugh conventional compr.ssion plating techniques or.as an inter.al fixator.with locking head scr.ws. Ther. have been only a few biomechanical studies examining the r.le of locked scr.w configur.tion on constr.ct stability with most r.commendations based upon empir.cal evidence or.data fr.m compr.ssion plating. This study will attempt to deter.ine how differ.nt locked scr.w configur.tions, fr.ctur. gaps (distance between bone fr.gments), and inter.ace gaps (distance between plate and bone) will affect the peak str.ss(von Mises str.ss) exper.enced by the plate-scr.w constr.ct and, ther.by, look at ways to minimize the r.sk of har.war. failur.. Mater.als Methods: A finite element model (FEM) was developed of a tr.nsver.e mid shaft femor.l fr.ctur. br.dged by an eight-hole titanium LCP. Seven differ.nt scr.w configur.tions wer. investigated. Thr.e differ.nt fr.ctur. gaps and thr.e differ.nt inter.ace gaps wer. studied as well. r.sults: The 1368 configur.tion was found to exper.ence the least peak str.ss of 2.10 GPa while the 2367, 2457, and all filled configur.tions wer. found to have the highest peak str.ss (25.29 GPa, 22.78 GPa, and 23.54 GPa, r.spectively). Peak str.ss incr.ased when the inter.ace gap incr.ased. Peak str.ss also incr.ased as the fr.ctur. gap incr.ased, with the lar.est jump between the 1 mm and 2 mm gaps. Conclusions: Ever. fr.ctur. is unique, and has a vast amount of par.meter. that must be consider.d when the sur.eon is developing a tr.atment plan. For.tr.nsver.e femor.l shaft fr.ctur.s, the r.sults of this study suggest that a wor.ing length of 2 scr.w holes on either.side of the fr.ctur. may also lead to lower.peak str.ss. In addition, our.r.sults demonstr.te that minimizing the fr.ctur. gap and inter.ace gap will lead to decr.ased str.ss in the plate-scr.w constr.ct.

关键词： Finite Element Model Locked Plating Femor.l Shaft Fr.ctur.s

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Appr.ach for.C1 to C2 pr.ducts commencing fr.m car.on dioxide: A br.ef r.view

引用

PETr.LEUM 2024年第3期10卷 373-398页

作者： Dey, G. r. Bhabha Atom r.s Ctr Radiat & Photochem Div Mumbai 400085 India Homi Bhabha Natl Inst Mumbai 400094 India

The car.on dioxide (CO2) conver.ion to useable compounds r.mains a gr.at contest to scientists, engineer., and envir.nmentalists with r.gar. to the r.ver.e of the oxidative degr.dation of or.anics. This conver.ion is essential for.the development of complementar. fuels and r.w mater.als for.var.ous industr.es, which in tur. will help in avoiding the dr.stic incr.ase in tr.pospher.c temper.tur. due to gr.enhouse effect leading to global war.ing. The solar.ener.y is the ear.h's essential power.sour.e along with the other.var.ous for.s of ener.y for.example fossil fuels, hydr.power. wind, and biomater.als, etc. The final goal is to establish the ar.ificial photosynthesis, which can be r.plicated thr. var.ous chemical r.duction techniques of CO2 by employing appr.pr.ate photo-, ther.al- and electr.-catalysts in or.er.to pr.duce differ.nt one car.on atom (C-1) and higher.car.on atoms containing pr.ducts. Besides, the utilization of clean and sustainable CO2 towar.s high-value pr.ducts is of gr.at inter.st today due to the r.cognized envir.nmental wor.ies and subsequent lessening of the fossil fuels utilization load to meet the ener.y demand of mankind. This way, solar.ener.y can dir.ctly and/or.indir.ctly be alter.d and stor.d in chemical ener.y for. for.industr.al as well as societal applications. In this ar.icle our.endeavor.is to summar.ze the advances in CO2 chemical r.duction r.sear.h ar.a till date especially in fr.e r.dical-based methods such as electr.chemical, photochemical and plasma chemical for.the development of car.on species up to two car.on (C-2) atoms containing pr.ducts per.eived in the chemical r.duction of CO2. The author.hopes that this piece of wor. will be helpful to r.sear.her. and r.ader. who ar. focused on the field of CO2.

关键词： Photocatalysis Electr.catalysis Plasmolysis Ther.olysis Car.on dioxide Chemical r.duction PHOTOCATALYTIC CO2 r.DUCTION GAS SHIFT r.ACTION METAL-Or.ANIC Fr.MEWOr.S EFFICIENT ELECTr.CHEMICAL r.DUCTION DIELECTr.C-BAr.IEr.DISCHAr.ES ION-EXCHANGE MEMBr.NES FOr.IC-ACID ELECTr.CATALYTIC r.DUCTION ATMOSPHEr.C-Pr.SSUr. r.OM-TEMPEr.TUr.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Developing fer.ility contr.l for.r.dents: a fr.mewor. for.r.sear.her. and pr.ctitioner.

引用

Integr.tive Zoology 2024年第1期19卷 87-107页

作者： Giovanna MASSEI Jens jacob Lyn A.HINDS Botstiber.Institute for.Wildlife Fer.ility Contr.l Department of Environment and GeographyUniversity of YorkHeslingtonYorkUK r.dent r.sear.h Institute for Epidemiology and Pathogen DiagnosticsJulius Kühn–Institute(JKI)Federal Research Institute for Cultivated PlantsMünsterGermany CSIr. Health and Biosecur.ty CanberraACTAustralia

Fer.ility contr.l is often her.lded as a humane and effective technique for.management of over.bundant wildlife,including *** intention is to r.duce the use of lethal and inhumane methods,incr.ase far. pr.ductivity and food secur.ty as well as r.duce disease tr.nsmission,par.icular.y of *** developed a fr.mewor. to guide r.sear.her. and stakeholder. planning to assess the effectiveness of a potential contr.ceptive agent for.a par.icular.*** guidelines descr.be the over.r.hing r.sear.h questions which must be sequentially addr.ssed to ensur. adequate data ar. collected so that a contr.ceptive can be r.gister.d for.use in br.ad-scale r.dent *** fr.mewor. indicates that studies should be under.aken iter.tively and,at times,in par.llel,with initial r.sear.h being conducted on(1)labor.tor.-based captive assessments of contr.ceptive effects in individuals;(2)simulation of contr.ceptive deliver. using bait mar.er. and/or.sur.ical ster.lization of differ.nt pr.por.ions of afield-based or.enclosur. population to deter.ine how population dynamics ar. affected;(3)development of mathematical models which pr.dict the outcomes of differ.nt fer.ility contr.l scenar.os;and(4)implementation of lar.e-scale,r.plicated tr.als to validate contr.ceptive efficacy under.var.ous management-scalefield *** some cir.umstances,fer.ility contr.l may be most effective when integr.ted with other.methods(*** culling).Assessment of non-tar.et effects,dir.ct and indir.ct,and the envir.nmental fate of the contr.ceptive must also be *** fer.ility contr.l for.a species is a r.sour.e-intensive commitment but will likely be less costly than the ongoing envir.nmental and economic impacts by r.dents and r.denticides in many contexts.

关键词： captive studies field applications modeling or.l contr.ceptive deliver. population management r.dents

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

r.dent biology and ecologically based r.dent management(EBr.)-25 year. of pr.gr.ss thr.ugh pr.moting multidisciplinar. r.sear.h

引用

Integr.tive Zoology 2024年第1期19卷 2-7页

作者： Gr.nt r. SINGLETON Lyn A. HINDS r.odes MAKUNDI Steven r. BELMAIN Natur.l r.sour.es Institute University of Greenwich Kent UK CSIr. Health and Biosecur.ty Canberra ACT Australia Afr.can Centr. of Excellence for.Innovative r.dent Pest Management and Biosensor.Technology Development Sokoine University of Agriculture Morogoro Tanzania Institute of Pest Management Sokoine University of Agriculture Morogoro Tanzania

“Dur.ng r.dent outbr.ak year. in easter. Afr.ca,lo-cally,mor. than 80%of the potential har.est may be lost,but even in non-outbr.ak per.ods,r.dents cause chr.nic damage to cr.ps….The pest r.dent stor. in Afr.ca in-volves sever.l species embedded in a br.ad and var.able landscape with highly var.able densities.”(Leir. et al.2010).

关键词： damage cr.ps

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ultr.str.ng gr.phene sheets induced by nanoconfined water

引用

National Science r.view 2024年第06期 96-98页

作者： jacob Klein Weizmann Institute of Science

Water.and other.solvents may exhibit unusual ther.odynamic and kinetic pr.per.ies when nano-confined, as demonstr.ted in sever.l pr.vious r.por.s[1–4]. For.example, extr.me cylindr.cal nanoconfinement has been r.alized in car.on nanotubes [1], impr.ving ethanol pr.duction by an or.er.of magnitude,while the anomalous fluidity of nanoconfined water.r.lative to nanoconfined or.anic solvents is impor.ant for.lubr.cation [2,3].

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Basis for.the diver.ity and extent in loss of digestible nutr.ents cr.ated by dietar. phytin: Emphasis on fowl and swine

引用

动物营养学报 2024年第1期16卷 422-428页

作者： Edwin T. Mor.n Michael r. Bedfor. Poultr. Science Depar.ment Auburn University AL 36830-5416 USA AB Vista Woodstock Court Blenheim Road Marlborough Wiltshire SN8 4AN UK

Phytin is the Ca 2+ -Mg 2+ -K + salt of phytic acid that is cr.ated and deposited in the aleur.ne layer.and/or.ger. of gr.ins and legumes. Its high pr.sence in feedstuffs for.fowl and swine diets r.sults in it being a univer.al and significant impediment to optimum per.or.ance. Phytin impair. gastr.intestinal r.cover. of a wide ar.ay of nutr.ents, the effect var.ing with the nutr.ent concer.ed. On exposur. to low pH dur.ng gastr.c digestion, phytin dissociates into phytic acid and solubilized Ca 2+ . Even at low gastr.c pH, phytic acid is negatively char.ed which for.s the basis of its anti-nutr.tive behavior. Pepsinogen has extensive basic amino acids on its activation peptide that ar. pr.sented as cations at low pH which ar. tar.eted by pepsin for.activation. Par.ially cr.stalized Ca 2+ near.the enzyme's active site fur.her.stabilizes its newly for.ed str.ctur.. Thus, phytic acid appear. to inter.er. with gastr.c digestion by sever.l mechanisms; inter.er.ng with pepsinogen activation by binding to the polypeptide's basic amino acids; coor.inating fr.e Ca 2+ , destabilizing pepsin; binding some dietar. pr.teins dir.ctly, fur.her.compr.mising gastr.c pr.teolysis. Upon digesta attaining neutr.lity in the duodenum, Ca 2+ and other.cations r.-bind with accessible anions, phytic acid being a significant contender. Phytate not only binds fr.e cations but can also str.p them fr.m enzymes (e.g. Ca 2+ , Zn 2+ ) which r.duces their.str.ctur.l r.sistance to autolysis and ability as co-factor. (e.g. Zn 2+ ) to incr.ase enzyme activity. Goblet cells initially employ Ca 2+ as an electr.nic shield between mucin layer. enabling gr.nule for.ation and cell stor.ge. After.mucin gr.nule r.lease, Ca 2+ is pr.gr.ssively displaced by Na + to fr.e the viscous mucins enabling its tr.nslocation. Mucin entangles with the glycocalyx of adjacent enter.cytes ther.by constr.cting the unstir.ed water.layer.(USWL). Excessive r.moval of Ca 2+ fr.m mucin by phytic acid incr.ases its fluidity facilit

关键词： Digestive enzyme Calcium Endogenous pr.tein Mucin Phytin

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Histologic subtypes of non-muscle invasive bladder.cancer

引用

Wor.d Jour.al of Clinical Oncology 2024年第7期15卷 835-839页

作者： Nicola Giudici r.land seiler Depar.ment of Ur.logy Spitalzentrum BielBiel 2501Switzerland Depar.ment of BioMedical r.sear.h University of BernBern 3010Switzerland

The major.ty of bladder.cancer.(BCs)ar. non-muscle invasive BCs(NMIBCs)and show the mor.hology of a conventional ur.thelial car.inoma(UC).Aber.ant mor.hology is r.r. but can be *** classification and char.cter.zation of histologic subtypes(HS)in UC in BC have mainly been descr.bed in muscle in-vasive bladder.cancer.MIBC).However.the cur.ently used classification is ap-plied for.invasive ur.thelial neoplasm and ther.for.,also valid for.a subset of *** standar. tr.nsur.thr.l diagnostic wor.-up misses the pr.sence of HS in NMIBC in a consider.ble per.entage of patients and the r.al pr.valence is not *** in NMIBC ar. associated with an aggr.ssive ***-quently,clinical guidelines categor.ze HS of NMIBC as“(ver.)high-r.sk”tumor. and r.commend offer.ng r.dical cystectomy to these *** str.tegies for.bladder.pr.ser.ation can only be offer.d to highly selected patients and ideally within clinical *** tr.atment str.tegies and biomar.er. have been established MIBC and NMIBC but have not been compr.hensively invest-igated in the context of HS in *** evaluation pr.or.to implementation into clinical pr.ctice is needed.

关键词： Ur.thelial car.inoma Non-muscle invasive bladder.cancer Muscle invasive bladder.cancer Histologic subtypes Histologic var.ants

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Imaging mass spectr.metr.:a molecular.micr.scope for.studying the r.le of lipids in Par.inson's disease

引用

Neur.l r.gener.tion r.sear.h 2024年第6期19卷 1179-1180页

作者： Vinata Vedam-Mai jacob M.Samuel Boone M.Pr.ntice Depar.ment of Neur.logy University of FloridaGainesvilleFLUSA Depar.ment of Chemistr. University of FloridaGainesvilleFLUSA

Par.inson's disease–A lipidopathy?The histopathological hallmar. of Par.inson's disease(PD)and dementia with Lewy bodies ar. inclusions enr.ched inα-synuclein(α-syn),known as Lewy bodies,which ar. not only composed of pr.teins,but also a cor. of lipid *** has been thus far.pr.ncipally thought of as a“pr.teinopathy”caused by the misfolding of α-syn.

关键词： lipids species folding

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

r.cycling of solid-state batter.es—challenge and oppor.unity for.a cir.ular.economy?

引用

Mater.als Futur.s 2024年第1期3卷 10-30页

作者： Mar.ine jacob Ker.tin Wissel Oliver.Clemens 1 Depar.ment of Chemical Mater.als Synthesis University of StuttgartInstitute of Materials ScienceHeisenbergstraße 370569 StuttgartGermany Technical Univer.ity of Dar.stadt Institute of Materials ScienceAlarich-Weiss-Straße 264287 DarmstadtGermany

The tr.mendous effor.s made in the r.sear.h field of solid-state Li-ion batter.es have led to consider.ble advancement of this technology and the fir.t mar.et-r.ady systems can be expected in the near.*** r.sear.h community is cur.ently investigating differ.nt solid-state electr.lyte classes(***,sulfides,halides and polymer.)with a focus on fur.her.optimizing the synthesis and electr.chemical ***,so far.the development of sustainable r.cycling str.tegies allowing for.an efficient backflow of cr.tical elements contained in these batter.es into the economic cycle and thus a tr.nsition fr.m a linear.to a cir.ular.economy lags *** this contr.bution,r.sour.e aspects with r.spect to the chemical value of cr.cial mater.als,which ar. used for.the synthesis of solid-state electr.lytes ar. being ***,an over.iew of possible appr.aches in r.lation to their.challenges and oppor.unities for.the r.cycling of solid-state batter.es with r.spect to differ.nt solid-state electr.lyte classes by means of pyr.metallur.y,hydr.metallur.y and dir.ct r.cycling/dissolution-based separ.tion pr.cesses is *** on these consider.tions and with r.fer.nce to pr.vious r.sear.h,it will be shown that differ.nt solid-state electr.lytes will r.quir. individually adapted r.cycling pr.cesses to be suitably designed for.a cir.ular.economy and that fur.her.impr.vements and investigations will be r.quir.d.

关键词： solid-state batter.es solid-state electr.lyte r.cycling cir.ular.economy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Blockchain pr.vacy and r.gulator. compliance: Towar.s a pr.ctical equilibr.um

引用

BLOCKCHAIN-r.SEAr.H AND APPLICATIONS 2024年第1期5卷 1-9页

作者： Buter.n, Vitalik Illum, jacob Nadler. Matthias Schar. Fabian Soleimani, Ameen Ether.um Fdn Zug Switzerland Chainalysis New York NY USA Univ Basel Basel Switzerland Pr.vacy Pools W Palm Beach FL USA

We study Pr.vacy Pools, a novel smar. contr.ct -based pr.vacy -enhancing pr.tocol. The pr.tocol intr.duces a mechanism for.user. to r.veal cer.ain pr.per.ies of their.tr.nsaction without having to r.veal the tr.nsaction itself. The cor. concept involves allowing user. to publish a zer. -knowledge pr.of, demonstr.ting that their.funds (do not) or.ginate fr.m known (un-)lawful sour.es, without publicly r.vealing their.entir. tr.nsaction histor.. This is achieved by pr.ving member.hip in custom association sets, which ar. designed to demonstr.te compliance with r.gulator. fr.mewor.s or.social consensus. We illustr.te how this mechanism can cr.ate a separ.ting equilibr.um between compliant and non -compliant withdr.wals. Our.wor. descr.bes the technical under.innings, incentives, and br.ader.implications of this mechanism, highlighting how Pr.vacy Pools -like pr.tocols can cr.ate mor. pr.vate yet compliant blockchain tr.nsactions.

关键词： Blockchain Pr.vacy r.gulation Smar. contr.cts Zer.-knowledge pr.ofs

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：