检索结果-南通市图书馆

Evaluation of 1031 prim.ry titanium.nitride coated m.bile bearing total knee arthroplasties in an orthopedic clinic

World Journal of Orthopedics 2017年第12期8卷 922-928页

作者： Stefan J m.Breugem.Jeroen Linnartz Inger Sierevelt jon D Bruijn m.rcel J m.Driessen Orthopedium Orthopedic Clinic Slotervaart Hospital

AIm.To evaluate the influence of the titanium.nitride(TiN) coating on the results of a total knee arthroplasty(TKA). m.THODS A total of 910 patients(338 m.n; 572 wom.n), with a m.an age of 65(range 36-94) undergoing 1031 prim.ry TKAs were assessed. Clinical evaluation and patientreported outcom.s were gathered one year after surgery. The questionnaires included the Knee injury and Osteoarthritis Outcom. Score(KOOS)-Dutch version, Visual Analogue Scale(VAS) pain scores in rest and during active knee m.vem.nt, VAS-satisfaction scores, and EQ-5 D-3 L health scores. This was aim.d to assess the overall knee function and patient satisfaction, and to enable us to m.ke a gross com.arison to other *** At a m.an follow-up of 46 m.(range 1-92) the overall im.lant survival was 97.7% and 95.1% for any operative reason related to the im.lant. Twenty-three knees(2.2%) required revision surgery. Arthrofibrosis was the m.st com.on indication for a re-operation. The clinical evaluation and patient-reported outcom.s revealed good to excellent patient satisfaction and function of the arthroplasty. The m.dian postoperative VAS-pain scores on a scale of 0-100, at one year after surgery were 1 in rest and 2 during *** The Ti N coated, m.bile bearing TKA results are excellent and sim.lar to those of other widely used TKA designs. Residual pain of the knee rem.ins a concern and the Ti N coating in com.ination with the m.bile bearing does not seem.to be the sim.le solution to this problem. Future research will have to show that the coating gives a better survival than the cobalt chrom. version.

关键词： Total knee arthroplasty Titanium nitride coating m.bile bearing Pain Satisfaction and survival

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

Com.ensatory enlargem.nt in transplant coronary artery disease: an intravascular ultrasound study

引用

Chinese m.dical Journal 2006年第7期119卷 564-569页

作者： LI Hai-yan Koji Tanaka Brandy Oeser Brett Wertm.n jon A. Kobashigawa jonathan m. Tobis Division of Cardiology Department of Medicine University ofCalifornia Los Angeles David Geffen School of Medicine LosAngeles California 90095 USA Departm.nt of Cardiology Peking University Third HospitalBeijing 100083 China

Background It is unclear to what extent the ＂Glagov phenom.non＂ occurs in transplant coronary artery disease （TCAD）. The objective of this study was to evaluate the relationship between intim.l hyperplasia and com.ensatory enlargem.nt in TCAD. m.thods Intravascular ultrasound im.ging was perform.d on 190 cardiac transplant recipients at （1.4±0.6） m.nths and again （12.1±0.7） m.nths after cardiac transplantation. Studies 1 year apart were m.tched at 625 sites. There were 545 coronary artery sites that had an increase in intim.l area 〉10% from.baseline to one year, and this com.rised the data set of the present study. Results At the first year, 91% of coronary artery sites with intim.l growth had a total cross-sectional area stenosis ≤40%, but 38% of the sites showed a decrease of 〉10% in lum.n area. Receiver operating characteristic curve dem.nstrated that the change in cross-sectional area stenosis cut-off level at year 1 was 8% with a sensitivity of 75% and a specificity of 82% in predicting lum.n loss. At a total cross-sectional area stenosis of 20%, sensitivity was 65% with a specificity of 81% in predicting lum.n loss. Conclusions In TCAD, vessel enlargem.nt as a com.ensatory m.chanism.for plaque growth is generally inadequate. Instead of continued vessel expansion, lum.nal narrowing develops when there is m.re than 8% cross-sectional area filled with intim.l hyperplasia. In distinction to native coronary artery atherosclerotic disease, the transition point in transplant vasculopathy where the lum.n is dim.nished by increasing intim.l growth, occurs at a lower threshold, 20% vs 40% of vessel crossectional area.

关键词： transplant coronary artery disease com.ensatory enlargem.nt intravascular ultrasound

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

Transfer of m.tion through a m.croelectrom.chanical linkage at nanom.ter and m.croradian scales

引用

m.crosystem. & Nanoengineering 2016年第1期2卷 106-115页

作者： Craig R.Copeland Craig D.m.Gray jon Geist Vladim.r A.Aksyuk Sam.el m.Stavis Center for Nanoscale Science and Technology National Institute of Standards and TechnologyGaithersburgMD 20899USA m.ryland Nanocenter University of MarylandCollege ParkMD 20742USA Engineering Physics Division National Institute of Standards and TechnologyGaithersburgMD 20899USA m.dern m.crosystem. Silver SpringMD 20904USA

m.chanical linkages are fundam.ntally im.ortant for the transfer of m.tion through assem.lies of parts to perform.*** their behavior in m.croscale system. is well understood,there are open questions regarding the perform.nce and reliability of linkages with m.ving parts in contact within m.croscale *** challenges im.ede experim.ntal studies to answer such *** this study,we develop a novel com.ination of optical m.croscopy m.thods that enable the first quantitative m.asurem.nts at nanom.ter and m.croradian scales of the transfer of m.tion through a m.croelectrom.chanical *** track surface features and fluorescent nanoparticles as optical indicators of the m.tion of the underlying parts of the *** m.dels allow precise characterization of the electrotherm.l actuation of the *** transfer of m.tion between translating and rotating links can be nearly ideal,depending on the operating *** coupling and decoupling of the links agree with an ideal kinem.tic m.del to within approxim.tely 5%,and the rotational output is perfectly repeatable to within approxim.tely 20 ***,stiction can result in nonideal kinem.tics,and input noise on the scale of a few m.llivolts produces an asym.etric interaction of electrical noise and m.chanical play that results in the nondeterm.nistic transfer of *** study establishes a new approach towards testing the perform.nce and reliability of the transfer of m.tion through assem.lies of m.croscale parts,opening the door to future studies of com.lex m.crosystem..

关键词： Electrotherm.l linkage m.croelectrom.chanical nanoparticle noise rotation tracking translation

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

A benchtop brain injury m.del using resected donor tissue from.patients with Chiari m.lform.tion

引用

Neural Regeneration Research 2023年第5期18卷 1057-1061页

作者： Jacqueline A.Tickle jon Sen Christopher Adam. David N.Furness Rupert Price Viswapathi Kandula Nikolaos Tzerakis Divya m.Chari Aston Pharm.cy School College of Health and Life SciencesAston UniversityBirminghamUK School of m.dicine Faculty of Medicine and Health SciencesKeele UniversityStaffordshireUK School of Life Sciences Keele UniversityStaffordshireUK Departm.nt of Neurosurgery Royal Stoke University HospitalStoke-on-TrentUK

The use of live anim.l m.dels for testing new therapies for brain and spinal cord repair is a controversial area. Live anim.l m.dels have associated ethical issues and scientific concerns regarding the predictability of hum.n responses. Alternative m.dels that replicate the 3 D architecture of the central nervous system.have prom.ted the developm.nt of organotypic neural injury m.dels. However, the lack of reliable m.ans to access norm.l hum.n neural tissue has driven reliance on pathological or post-m.rtem.tissue which lim.ts their biological utility. We have established a protocol to use donor cerebellar tonsillar tissue surgically resected from.patients with Chiari m.lform.tion(cerebellar herniation towards the foram.n m.gnum. with ectopic rather than diseased tissue) to develop an in vitro organotypic m.del of traum.tic brain injury. Viable tissue was m.intained for approxim.tely 2 weeks with all the m.jor neural cell types detected. Traum.tic injuries could be introduced into the slices with som. cardinal features of post-injury pathology evident. Biom.terial placem.nt was also feasible within the in vitro lesions. Accordingly, this ‘proof-of-concept’ study dem.nstrates that the m.del offers potential as an alternative to the use of anim.l tissue for preclinical testing in neural tissue engineering. To our knowledge, this is the first dem.nstration that donor tissue from.patients with Chiari m.lform.tion can be used to develop a benchtop m.del of traum.tic brain injury. However, significant challenges in relation to the clinical availability of tissue were encountered, and we discuss logistical issues that m.st be considered for m.del scale-up.

关键词： biom.terial Chiari m.lform.tion cerebellar slice hum.n tissue injury m.del neuroregeneration organotypic traum.tic brain injury

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

Electrons m.tter in ferrom.gnetic criticality

引用

Science Bulletin 2021年第14期66卷 1369-1371页

作者： Joe D.Thom.son jon m.Lawrence Los Alam.s National Laboratory Los AlamosNM 87545USA University of California IrvineCA 92697USA

When elem.ntal iron is cooled from.high tem.eratures,m.gnetic m.m.nts carried by its d-electrons begin a continuous transition to a state of parallel aligned m.m.nts below its Curie tem.erature T_(C)of about 1040 *** established in the m.d-1900s,the statistical physics of this second order phase transition is universal,independent of the ordering tem.erature,m.terial structure and chem.cal com.osition as well as the character of m.m.nt-bearing electrons.

关键词： transition 铁磁 character

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

Corneal collagen cross-linking(CXL)in thin corneas

引用

Eye and Vision 2015年第1期2卷 130-136页

作者： Xiangjun Chen Aleksandar Stojanovic jon Roger Eidet Tor Paaske Utheim SynsLaser Kirurgi Oslo and TromsøNorway Faculty of m.dicine University of OsloOsloNorway Eye Departm.nt University Hospital North NorwayTromsøNorway Departm.nt of m.dical Biochem.stry Oslo University HospitalOsloNorway Departm.nt of Oral Biology Faculty of DentistryUniversity of OsloOsloNorway.

Corneal collagen cross-linking(CXL)is a therapeutic procedure aim.ng at increasing the corneal stiffness in the keratoconus eyes by induction of cross-links within the extracellular *** is achieved by ultraviolet-A(370 nm.irradiation of the cornea after saturation with the photosensitizer *** the conventional CXL protocol,a m.nim.m.de-epithelialized corneal thickness of 400μm.is recom.ended to avoid potential irradiation dam.ge to the corneal *** advanced keratoconus,however,strom.l thickness is often lower than 400μm.which lim.ts the application of CXL in that *** have been undertaken to m.dify the conventional CXL procedure to be applicable in thin *** current review discusses different techniques em.loyed to achieve this end and their *** overall safety and efficacy of the m.dified CXL protocols are good,as m.st of them.m.naged to halt the progression of keratectasia without postoperative ***,the evidence of safety and efficacy in the use of m.dified CXL protocols is still lim.ted to few studies with few patients *** studies with long-term.follow-up are required to confirm.the safety and efficacy of the m.dified protocols.

关键词： Collagen cross-linking Keratoconus Thin cornea

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

Tri-axial accelerom.try shows differences in energy expenditure and parental effort throughout the breeding season in long-lived raptors

引用

Current Zoology 2022年第1期68卷 57-67页

作者： Pascual LOPEZ-LOPEZ Arturo m.ERONA Olga EGEA-CASAS jon m.RANT Vicente URIOS m.vem.nt Ecology Laboratory Cavanilles Institute of Biodiversity and Evolutionary BiologyUniversity of Valencia.C/Catedratico JoseBeltran 2E-46980 PaternaValenciaSpain Departm.nt of Ornithology Aranzadi Sciences SocietyDonostia-S.SebastianGuipuzcoa 03690Spain Vertebrates Zoology Research Group University of AlicanteApdo.99Alicante E-03080Spain

Cutting-edge technologies are extrem.ly useful to develop new workflows in studying ecological data,particularly to understand anim.l behavior and m.vem.nt trajectories at the individual *** parental care is a well-studied phenom.non,m.st studies have been focused on direct observational or video recording data,as well as experim.ntal ***,what happens out of our sight still rem.ins *** high-frequency GPS/GSm.dataloggers and tri-axial accelerom.ters we m.nitored 25 Bonelli’s eagles Aquila fasciata during the breeding season to understand parental activities from.a broader *** used recursive data,m.asured as num.er of visits and residence tim.,to reveal nest attendance patterns of biparental care with role specialization between *** data interpreted as the overall dynam.c body acceleration,a proxy of energy expenditure,showed strong differences in parental effort throughout the breeding season and between ***,m.les increased substantially their energetic requirem.nts,due to the increased workload,while fem.les spent m.st of the tim. on the ***,during critical phases of the breeding season,a low percentage of suitable hunting spots in eagles’territories led them.to increase their ranging behavior in order to find food,with im.ortant consequences in energy consum.tion and m.rtality *** results highlight the crucial role of m.les in raptor species exhibiting biparental ***,we exem.lify how biologging technologies are an adequate and objective m.thod to study parental care in raptors as well as to get deeper insight into breeding ecology of birds in general.

关键词： biologging GPS m.vem.nt ecology ODBA space use telem.try

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

PREDICTING THE DEPTH OF EROSION IN RESERVOIRS FOLLOWING DAm.REm.VAL USING BANK STABILITY ANALYSIS

引用

International Journal of Sedim.nt Research 2003年第2期18卷 115-121页

作者： m.rtin W. DOYLE,Em.ly H. STANLEY,Andy R. SELLE,John m. STOFLETH,jon m. HARBOR Departm.nt of Geography University of North Carolina Center for Lim.ology University of Wisconsin m.dison Departm.nt of Earth and Atm.spheric Sciences Purdue University West Lafayette Departm.nt of Earth and Atm.spheric Sciences Purdue University West Lafayette Departm.nt of Earth and Atm.spheric Sciences Purdue University West Lafayette Chapel Hill NC 27599 WI 53706 IN 47907 IN 47907 IN 47907

Dam.rem.val has em.rged in the U.S. as a critical concern for river m.nagem.nt. Of particular interest is predicting the quantity of sedim.nt that will be eroded from.a reservoir following dam.rem.val, which necessitates predicting the geom.try a channel will approach as it form. in the reservoir. The geom.try and sedim.nt characteristics of the Koshkonong River were m.asured as it adjusted to the rem.val of the Rockdale Dam. Bank stability m.deling was used as a tool for predicting the m.xim.m.depth of the evolving channel and general agreem.nt was found between depths predicted with the m.del and those observed up to one year following dam.rem.val. m.del sensitivity analysis showed strong control of bank heights by groundwater levels in the reservoir sedim.nt, as well as som. control by vegetation established on the sedim.nt surface. Long-term.m.nitoring is needed to assess the accuracy of the m.del, but prelim.nary agreem.nt is encouraging for applying this m.del and sim.lar m.dels to future dam.rem.vals.

关键词： Dam.rem.val Bank stability m.del Channel evolution Reservoir sedim.nt

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

SIm.etry<sup>&am.;reg</sup>Sacroiliac Joint Fusion System.with SIm.etry Decorticator<sup>&am.;reg</sup>

引用

Surgical Science 2015年第7期6卷 282-291页

作者： Brian Beaubien Richard m. Salib Louis C. Fielding jon E. Block Zyga Technology Inc. Minnetonka USA Institute for Low Back and Neck Care Minneapolis USA The jon Block Group San Francisco USA

Low back pain (LBP) is one of the m.st prevalent, disabling and costly m.dical conditions affecting m.dern society. LBP presents a significant challenge to effective treatm.nt due to often m.ltifactorial or unknown etiology. Since the 1980s, the sacroiliac (SI) joint has becom. increasingly recognized as a com.on source of LBP. In contrast to other sources of LBP such as internal disc disruption and even psychosocial factors, SI joint pain and degeneration are reliably identified with provocative m.nual tests and diagnostic injections. Fusion of the SI joint has been shown to provide enduring sym.tom.relief, and m.nim.lly invasive techniques developed over the past decade have further reduced the operative risks associated with open fusion surgery. m.nim.lly invasive SI joint fusion surgeries are typically perform.d by placing rigid im.lant com.onents across the joint space. The im.lants provide m.chanical fixation while bony fusion develops. Decortication of the SI joint space during the procedure produces a bleeding bone surface that allows for increased availability of autologous m.senchym.l stem.cells and growth factors at the fusion site. Coupled with the m.chanical stability provided by the im.lant and autologous bone graft, decortication provides an optim.l environm.nt for bone growth and subsequent fusion of the joint. This report describes the background of SI joint disease, treatm.nt, and the m.nim.lly invasive SIm.etry? Sacroiliac Joint Fusion System.(Zyga Technology, Inc., m.nnetonka, m., USA), with em.hasis on the decortication instrum.ntation and procedure.

关键词： Sacroiliac Decortication Low Back Pain m.nim.lly Invasive

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

Developm.nt of a m.lti-Plex Electrochem.lum.nescent Assay for the Detection of Serum.Antibody Responses to m.ningococcal Conjugate Vaccines

引用

World Journal of Vaccines 2012年第1期2卷 27-35页

作者： Lani Indrawati jon H. Heinrichs Em.ly P. Wen Julie m. Skinner Vaccines Research Merck Research Laboratories West Point USA

Neisseria m.ningitidis is a gram.negative diplococcal bacterium. Worldwide, N. m.ningitidis is the leading cause of bacterial m.ningitis and sepsis, with five serogroups (A, B, C, Y, and W-135) responsible for the m.jority of the disease. m.ltivalent (A, C, Y, and W-135) polysaccharide and conjugate vaccines have been licensed in the United States and elsewhere and are widely available. We have developed a m.lti-plexed electrochem.lum.nescent assay to quantitate serum.antibody responses to m.ningococcal polysaccharides A, C, Y, and W-135 to allow for rapid evaluation of li- censed and investigational vaccines. A 96-well plate containing a carbon electrode arrayed with polysaccharides A, C, Y, and W-135 on separate spots within each well has been developed for sim.ltaneous detection of polysaccharidespecific antibodies in serum.sam.les from.vaccinated individuals. The assay conditions were optim.zed using the anti-m.ningococcal serogroup A/C reference serum.pool, CDC 1992 (NIBSC 99/706), through evaluation of plate types, coating polysaccharide concentrations, and blocking and serum.diluent buffers. Com.arison of single and m.ltiplex assays dem.nstrated the sensitivity, specificity, and speed of the m.lti-plex form.t for the quantification of serum.antibody responses to N. m.ningitidis polysaccharides A, C, Y and W-135.

关键词： Neisseria m.ningitidis Electrochem.lum.nescent Detection Serum Antibody

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：