Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering最新文献_第5页

Kinetic modeling of fluid and solute transport in peritoneal dialysis. 腹膜透析中液体和溶质转运的动力学模型。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052061964

A Werynski, J Waniewski, B Lindholm

引用次数: 2

Manifestation of internal organs malfunction by laser Doppler study on microcirculation. 微循环激光多普勒研究内脏功能障碍的表现。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052062701

R Maniewski, A Liebert

{"title":"Manifestation of internal organs malfunction by laser Doppler study on microcirculation.","authors":"R Maniewski, A Liebert","doi":"10.1163/15685570052062701","DOIUrl":"https://doi.org/10.1163/15685570052062701","url":null,"abstract":"Monitoring of microvascular blood perfusion provides very specific information on the proper function or malfunction of some internal organs, e.g. the pancreas and kidney. The laser Doppler method was used to measure microperfusion in the skin of the lower limb of diabetic patients and patients undergoing hemodialysis. This method offers non-invasive, real-time monitoring and is already accepted in many clinical experiments. The method and the laser Doppler instruments used are described. Special attention is paid to the investigation of microvascular abnormality in diabetes by using a multichannel laser Doppler system during postocclusive reactive hyperemia. The study group consisted of 41 diabetes and 24 healthy subjects with no history of family diabetes. The most valuable data were obtained from the probe located on the most distal part of the foot. Some hyperemic parameters (maximum of hyperemic response, time to peak flow) were significantly different for the diabetic group as comparing to the norm. In the microcirculation study during hemodialysis, three patients with kidney dysfunction were investigated. Increase in red blood cell velocity was observed, probably caused by better distribution of blood to the peripheral circulation.","PeriodicalId":77139,"journal":{"name":"Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering","volume":"10 3","pages":"233-8"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/15685570052062701","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21845932","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: 2

Unconstrained physiological monotoring in daily living for health care. 无约束的生理监测在日常生活中的医疗保健。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052062710

K Yamakoshi

{"title":"Unconstrained physiological monotoring in daily living for health care.","authors":"K Yamakoshi","doi":"10.1163/15685570052062710","DOIUrl":"https://doi.org/10.1163/15685570052062710","url":null,"abstract":"This paper deals with the recent development of two types of non-invasive physiological monitoring systems for possible application in an unconstrained manner to normal subjects for health care as well as to patients and/or outpatients with disorders or with life support systems (artificial organs and organ transplantations). One is an ambulatory monitoring system which allows automatic acquisition of blood pressure, cardiac output and other cardiovascular hemodynamic parameters on a beat-by-beat basis using the volume-compensation and transthoracic electrical admittance method. The other is a home monitoring system installed in a lavatory which can measure body and excreta weight together with the ballistocardiogram as an index of cardiac ejecting function in an unaware fashion without attachment of any sensors to the subject's body and without special operations for measurement during toilet use. Outlines of these two systems and monitoring results of laboratory and field testings are presented, and these suggest that the ambulatory and non-conscious physiological monitoring techniques described herein appear promising as a valuable and helpful means for use in research as well as in the practical field of health monitoring at home during daily living.","PeriodicalId":77139,"journal":{"name":"Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering","volume":"10 3","pages":"239-59"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/15685570052062710","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21845933","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: 31

Urea biosensors and their application in hemodialysis--perspective of EnFET application. 尿素生物传感器及其在血液透析中的应用——EnFET应用的展望。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052061991

W Torbicz, D G Pijanowska, M Dawgul

引用次数: 7

Functions of masseter and temporalis muscles in the control of temporomandibular joint loading--a static analysis using a two-dimensional rigid-body spring model. 咬肌和颞肌在控制颞下颌关节负荷中的作用——使用二维刚体弹簧模型的静态分析。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052061513

K I Itoh, T Hayashi

{"title":"Functions of masseter and temporalis muscles in the control of temporomandibular joint loading--a static analysis using a two-dimensional rigid-body spring model.","authors":"K I Itoh, T Hayashi","doi":"10.1163/15685570052061513","DOIUrl":"https://doi.org/10.1163/15685570052061513","url":null,"abstract":"Masticatory forces or bite forces applied to the teeth are known to generate a compressive force on the temporomandibular joint (TMJ). This intra-articular force is referred to as TMJ loading. TMJ loading is considered to be controlled to a certain extent by the stomatognathic system, so as not to exceed a certain limit. In order to clarify the control mechanism of the TMJ during biting, the controllability of TMJ loading through coordinated activities of the masticatory muscles has been numerically analyzed using a static two-dimensional jaw model. This model consists of a rigid-body model of the jaws and a spring model of the articular disk, which includes three dominant muscle force vectors representing the masseter, temporalis and lateral pterygoid muscles. The bite force vector is assumed to be applied solely at the first molar. Static equilibrium analyses suggest that coordinated activities of the masseter muscle and anterior portion of the temporalis muscle can minimize TMJ loading and concentrate the stress within the articular disk to the intermediate zone of the disk, and that the activity of the posterior portion of the temporalis muscle has the possibility of reducing TMJ loading.","PeriodicalId":77139,"journal":{"name":"Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering","volume":"10 1","pages":"17-31"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/15685570052061513","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21739324","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: 12

Preliminary study of continuous glucose monitoring with a microdialysis technique and a null method--a numerical analysis. 微透析技术及零值法连续血糖监测的初步研究——数值分析。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052062008

T Tamura, K Koseki, T Sumino, M Ogawa, T Togawa, K Tsuchiya

{"title":"Preliminary study of continuous glucose monitoring with a microdialysis technique and a null method--a numerical analysis.","authors":"T Tamura, K Koseki, T Sumino, M Ogawa, T Togawa, K Tsuchiya","doi":"10.1163/15685570052062008","DOIUrl":"https://doi.org/10.1163/15685570052062008","url":null,"abstract":"Monitoring of the subcutaneous tissue glucose concentration is an attractive method for continuous monitoring of the glucose concentration in diabetic patients. Several researchers have studied this, but no satisfactory method has been developed. We have proposed a new method, which can measure the glucose concentration of subcutaneous tissue continuously, even as the efficiency of membrane perfusion and sensor performance decline. Two reference solutions were prepared with concentrations higher and lower than the objective solution. They were perfused alternately for different ratios of perfusion times. The glucose concentration, after perfusing microdialysis, was detected and the trend of changes in the concentration was used to control the ratio of the two perfusion solutions. When the trend was a unity, the glucose concentration was calculated from the ratio of the two perfusion solutions. The numerical study was performed with a compartment model and a basic control theory. In simulation, the 90% response time to step change was approximately 7 min, which is fast enough when compared with the fluctuation of glucose in the electrolyte. This result suggested that this new system might be useful for continuous monitoring of the glucose concentration in subcutaneous tissue.","PeriodicalId":77139,"journal":{"name":"Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering","volume":"10 2","pages":"147-56"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/15685570052062008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21740045","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: 4

Blood purification by a membrane technique--a new method for the effective removal of low-density lipoprotein cholesterol. 膜技术净化血液——一种有效去除低密度脂蛋白胆固醇的新方法。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052061982

J M Wójcicki, A Ciechanowska, W Strobl, S Sabalińska, D Falkenhagen

{"title":"Blood purification by a membrane technique--a new method for the effective removal of low-density lipoprotein cholesterol.","authors":"J M Wójcicki, A Ciechanowska, W Strobl, S Sabalińska, D Falkenhagen","doi":"10.1163/15685570052061982","DOIUrl":"https://doi.org/10.1163/15685570052061982","url":null,"abstract":"A membrane plasma fractionation (MPS) technique is applied in order to obtain selective removal of pathological plasma components from the extracorporeal circuit. An effective plasma fractionation procedure should be characterized by the highest possible removal of the pathological plasma components and, equally as important, the lowest unwanted protein losses caused mainly by adsorption to the membrane structure. In order to obtain a higher efficiency of the MPS procedure (high selectivity between removal of pathological plasma components and unwanted losses mainly represented by albumin) several methods such as thermofiltration, application of pulsate flow at the end of secondary filter, etc. have been developed. Clinical verification of these methods led to some improvement in MPS procedure but these results did not seem to be optimal. The main objective of this paper is to present a new two-stage membrane system utilizing a high flow recirculation circuit developed particularly, but not only, for effective removal of low-density lipoprotein cholesterol. The designed and developed system has been tested in vitro using several different plasma fractionation membranes. The results obtained indicated the importance of the membrane structure and membrane material on the efficiency of the tested plasma fractionation procedure. It was also found that it is possible to obtain negligible protein losses for some selected membrane structures applied in the assessed system. Based on preliminary results, it seems that the new two-stage membrane system proposed could be characterized by a very low range of unwanted protein losses leading to high effectiveness of the plasma fractionation procedure.","PeriodicalId":77139,"journal":{"name":"Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering","volume":"10 2","pages":"131-7"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/15685570052061982","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21740043","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: 2

Maximal flow pulsation in the pial arterioles of rats at increased intracranial pressure. 颅内压升高时大鼠心脏小动脉最大血流脉动。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052061540

J Seki, Y Sasaki, T Oyama, J Yamamoto

引用次数: 3

Acquisition of long-term cardiac signals for chronodiagnostic utility. 用于时间诊断的长期心脏信号采集。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052062729

M Ishijima

引用次数: 0

Modulation of neural activities during visual processing in the human extrastriate visual cortex. 人类纹外层视觉皮层视觉加工过程中神经活动的调节。

Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering Pub Date : 2000-01-01 DOI: 10.1163/15685570052061522

F Takeuchi, Y Hirata, S Kuriki

引用次数: 1