中国地球物理学会年刊最新文献_第9页

The affect of relative lordosis on dynamic torsional stability in the lumbar spine 相对前凸对腰椎动态扭转稳定性的影响

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1053416

R. P. Morris, K. Garges, R. Patterson, J. Yang, W. Buford, A. Muffoletto, J. Simmons

{"title":"The affect of relative lordosis on dynamic torsional stability in the lumbar spine","authors":"R. P. Morris, K. Garges, R. Patterson, J. Yang, W. Buford, A. Muffoletto, J. Simmons","doi":"10.1109/IEMBS.2002.1053416","DOIUrl":"https://doi.org/10.1109/IEMBS.2002.1053416","url":null,"abstract":"The purpose of the study is to investigate one of the factors that appear to be responsible for the high incidence of back pain and disability, inefficacious lumbar lordosis. It has been the observation of many back pain specialists that patients with back pain and disc problems have a decreased lumbar curvature; this has been presumed by some to be a result of muscle spasm, but by others as a cause of the primary malady. Six cadaver spinal segments were tested on a materials testing system (MTS) in varying degrees of lumbar curvature to see whether the curvature had an affect on stability with compression and rotation, the motions responsible for many back injuries. In all cases, increased lumbar lordosis correlated with increased stiffness, This correlation was at a maximum with respect to the spines tested, in the one with the least amount of osteopenia (estimated by radiographs and age of specimens). The results suggest that lumbar lordosis correlates with increased stiffness in cadaveric specimens. This study is ongoing and preliminary results suggest a larger sample size for the mechanical testing is needed for the study to be conclusive and statistically valid. Once that is achieved, the correlations and clinical significance can be determined.","PeriodicalId":60385,"journal":{"name":"中国地球物理学会年刊","volume":"89 1","pages":"2540-2541 vol.3"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83918407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Learning medical imaging in classroom, virtual classroom and laboratory classroom 在课堂、虚拟课堂和实验室课堂学习医学影像

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1053457

Weizhao Zhao, Chunyan Wu, Xiaodong Wu, R. Prado, P. Pattany

引用次数: 2

Electrophysiological neuroimaging of brain activity 脑活动的电生理神经成像

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1053120

B. He, J. Lian

引用次数: 4

Filtering of surface Laplacian electrocardiograms from humans to produce atrial activation patterns 过滤人体表面拉普拉斯心电图以产生心房激活模式

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1106439

W. Besio, P. Tarjan

引用次数: 5

Hepatocellular engineering via acellular cadherin-derived microinterfaces 通过脱细胞钙粘蛋白衍生的微界面进行肝细胞工程

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1137067

T. Brieva, P. Moghe

{"title":"Hepatocellular engineering via acellular cadherin-derived microinterfaces","authors":"T. Brieva, P. Moghe","doi":"10.1109/IEMBS.2002.1137067","DOIUrl":"https://doi.org/10.1109/IEMBS.2002.1137067","url":null,"abstract":"The development of cell-based therapies for liver failure relies on the availability of scaffolds that support high levels of cellular function. In this work, we functionalize biomaterial surfaces using a novel cell-based ligand as an alternative to traditional extracellular matrix-derived ligands. Initial studies in a model coculture system indicate that E-cadherin, a key cell-cell adhesion molecule present on hepatocytes, enhances liver-specific function when presented by chaperone cells. We then investigate the behavior of hepatocytes on acellular cadherin-presenting immobilized microparticle-based biomaterials. Biological activity of acellular cadherins is ensured by appending to the extracellular domain of E-cadherin an immunoglobulin Fc region, which induces dimerization and specifically adheres to a Protein A coating on the microbeads. Hepatocellular function was elevated on these surfaces as compared to the control, Fc presenting surfaces. Both surfaces exhibited similar cell adhesion and morphogenesis, suggesting that induction of hepatocyte function by cadherins was due to signaling activities rather than adhesive activities. Overall, we have demonstrated that functionalization of biomaterials with acellular cadherins is a powerful way to induce hepatocyte function.","PeriodicalId":60385,"journal":{"name":"中国地球物理学会年刊","volume":"162 1","pages":"778-779 vol.1"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77541746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D registration of medical scanner volumes and tissue section photographs for evaluation of image-guided treatment 用于评价图像引导治疗的医学扫描仪体积和组织切片照片的三维配准

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1106249

R. Lazebnik, D. Wilson, M. Breen, J. Lewin

引用次数: 0

Using direct force measurements to determine the mechanism of neural cell adhesion molecule (NCAM) function 利用直接力测量确定神经细胞粘附分子(NCAM)功能的机制

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1134524

D. Leckband, C. Johnson, R. A. Roberts, I. Fujimoto, B. Anderson, U. Rutishauser

引用次数: 0

Thermal facial screening for deception detection 用于欺骗检测的热面部筛选

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1106317

I. Pavlidis, J. Levine

引用次数: 25

High resolution optical imaging and spectroscopy of biological tissues 生物组织的高分辨率光学成像和光谱学

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1053261

Xingde Li, M. Brezinski, J. Fujimoto

引用次数: 3

The effect of shock absorbing prosthetic components on the gaits of persons with lower-extremity amputations 减震假体对下肢截肢者步态的影响

中国地球物理学会年刊 Pub Date : 2002-12-01 DOI: 10.1109/IEMBS.2002.1053339

S. Gard, Regina J. Konz

{"title":"The effect of shock absorbing prosthetic components on the gaits of persons with lower-extremity amputations","authors":"S. Gard, Regina J. Konz","doi":"10.1109/IEMBS.2002.1053339","DOIUrl":"https://doi.org/10.1109/IEMBS.2002.1053339","url":null,"abstract":"Shock absorbing pylons (SAPs) are components that increase prosthetic compliance and provide shock absorption during walking, running, and other high-impact activities in persons with leg amputations. The purpose of this study was to investigate the effect of SAPs on the gaits of persons who walk with trans-tibial prostheses. Two gait analyses were performed on ten subjects walking with and without an Endolite TT (Telescopic-Torsion) Pylon. Comparison of kinematic and kinetic gait parameters indicated that there were few quantitative changes in the way people walked with and without the SAPs. The most consistent change among subjects was a reduction In the magnitude of an isolated force transient that occurred during the prosthetic loading response phase, an effect that was more evident at higher walking speeds. Results from a questionnaire that was administered to subjects indicated they generally preferred walking with the SAP for reasons related to comfort. We conclude that SAPs may provide significant benefit for persons with trans-tibial amputations who are able to routinely walk at speeds above approximately 1.3 m/sec.","PeriodicalId":60385,"journal":{"name":"中国地球物理学会年刊","volume":"33 1","pages":"2393-2394 vol.3"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76226286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0