2009 14th National Biomedical Engineering Meeting最新文献_第3页

Estimation of state transition matrix in the Kalman filter based inverse ECG solution with the help of training sets 基于训练集的卡尔曼滤波心电反解状态转移矩阵估计

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130254

Umit Aydin, Y. Serinağaoğlu

引用次数: 1

Extraction of the liver vessels from the abdomen CTA images by Hessian-based vessel filter 基于hessian的血管滤波从腹部CTA图像中提取肝脏血管

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130311

H. Dogan, O. Dicle, C. Guzelis

引用次数: 2

Examining the relevance with sleep stages of time domain features of EEG, EOG, and chin EMG signals 研究脑电图、眼电图和颏肌电图信号的时域特征与睡眠阶段的相关性

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130256

S. Gune, K. Polat, M. Dursun, Ş. Yosunkaya

{"title":"Examining the relevance with sleep stages of time domain features of EEG, EOG, and chin EMG signals","authors":"S. Gune, K. Polat, M. Dursun, Ş. Yosunkaya","doi":"10.1109/BIYOMUT.2009.5130256","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130256","url":null,"abstract":"Sleep staging has an important role in determining sleep disorders such as sleepiness, human fatigue etc. Sleep staging is generally done according to Rechtschaffen and Kales standard (RKS) using EEG signal obtained from PSG signals taken from patient subjects who come with any sleep disorders. Sleep stages are generally divided into three stages including awake, REM and N-REM (stage 1, stage 2, and stage 3). In this study, time domain features of EEG, EOG of right and left eyes, and chin EMG signals belonging to sleep stages were investigated and correlation between these time domain features and sleep stages was calculated. The used time domain features are mean value, standard deviation, peak value, skewness, kurtosis, and shape factor belonging to EEG, EOG of right and left eyes, and chin EMG signals. In experimental studies, PSG recordings of 3 subjects were taken and average recording time of 6.22 h, total recording time was 18.67 h. When investigated correlation coefficients, it is seen that skewness feature in time domain features of EEG signal, standard deviation feature in time domain features of EOG signals belonging to right and left eyes, and mean value feature in time domain features of chin EMG signal were more correlated with sleep stages than other features. Consequently, a feature vector can be constituted combining features determined from time domain features of EEG, EOG belonging to right and left eyes, and chin EMG signals. This obtained feature vector can be easily used in distinguishing sleep stages.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"267 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133760914","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: 11

Design and fabrication of a chaotic mixer for BioMEMS applications 生物机械系统混沌混频器的设计与制造

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130268

G. Yilmaz, E. Bayraktar, H. Kulah

引用次数: 0

Improvement of mechanical performances by plasma polymerisation technique for composite biomaterials 等离子体聚合技术对复合生物材料力学性能的改善

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130313

Tuba Durmaz, S. Erkut, Dilek Cokeliler

{"title":"Improvement of mechanical performances by plasma polymerisation technique for composite biomaterials","authors":"Tuba Durmaz, S. Erkut, Dilek Cokeliler","doi":"10.1109/BIYOMUT.2009.5130313","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130313","url":null,"abstract":"In recent years, fibers are used for improving mechanical strength of acrylic-based resin which used for construction of protheses frequently. Improvement of the fiber- matrix interfase is a very important approach at redevelopment of mechanical properties. In this study, glass fibers are modified by radiofrequency (RF) plasma technique with using different monomers. Silane based monomer glisitoxypropyltrimethiloxysilane and amine based ethylenediamine (EDA)are polimerized on the glass fibers in plasma environment for application of two different approaches (hydrophobic/hydrophobic). Surface modification application is optimized with increasing power and exposure time parameters, which are used for low vacuum RF glow discharge. The change of surface properties for glass fibers are characterized by measurement of static contact angle and bending strain of fiber-acrylic composites are measured with 3 point bending device. While the cost of bending strain of the composites, which is prepared by virgin glass fibers, is 127.9±9 MPa, the maximum mechanical strength has been obtained at amine based plasma polymerization technique (150.2±4 MPa). The mechanical strenght is improved according to the working parameters that are used in silane based plasma polymerisation technique (141.2±7 MPa, power: 40W, Exposure Time: 30 min) It's proved with contact angle measurement that gaining less hydrofobic property to the surface is an appropriate approach.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133375520","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: 1

Design and Implementation of Electrospinning System 静电纺丝系统的设计与实现

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130365

Mustafa Doğan, Okan Karatay, Dilek Cokeliler, I. Kocum

引用次数: 1

The effects of classical and turkish music samples on the Autonomic Nervous System 古典和土耳其音乐样本对自主神经系统的影响

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130363

M. Yıldız, D. Yilmaz

引用次数: 1

Frequency following brain oscillations evoked by vibrotactile stimulation of the distal phalanx in normal subjects 正常人远端指骨触觉振动刺激引起的脑振荡的频率

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130376

Duygu Torun, M. Yıldız, Burak Guclu

{"title":"Frequency following brain oscillations evoked by vibrotactile stimulation of the distal phalanx in normal subjects","authors":"Duygu Torun, M. Yıldız, Burak Guclu","doi":"10.1109/BIYOMUT.2009.5130376","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130376","url":null,"abstract":"The sensory response upon vibrotactile stimuli is still not entirely understood. Previously, the responses of single units from mechanoreceptive afferents and cortical neurons have been studied. There is a thorough psychophysical literature on judgements of the presence, magnitude, and frequency of vibrotactile stimuli [1–3]. However, non-invasive recording of evoked responses on the scalp have solely been determined for electrical stimuli.In this study, psychophysical detection thresholds of adult subjects were measured at various mechanical frequencies. These values were found to be consistent with the literature. To measure the frequency following brain responses, stimulus intensities were determined based on psychophysical sensation levels. Data recorded from the somatosensory cortex area via electrodes placed on scalp, were analysed with wavelet transform. The results show that, as the mechanical stimulus intensity was increased, the background activity was suppressed and the frequency-following activity during stimulus period increased. This finding was statistically significant","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"650 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123288376","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

Design and application of a sol-gel based fluorescent glucose arrays 基于溶胶-凝胶的荧光葡萄糖阵列的设计与应用

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130305

Nimet Yildirim, Dilek Odaci, Gulsiye Ozturk, S. Alp, Y. Ergun, K. Feller, K. Dornbusch, S. Timur

引用次数: 0

Effect of temperature on electrochemically deposited HAP films on CoCrMo substrate 温度对CoCrMo衬底电化学沉积HAP膜的影响

2009 14th National Biomedical Engineering Meeting Pub Date : 2009-05-20 DOI: 10.1109/BIYOMUT.2009.5130325

Pinar Koymen Cagar, N. F. Ak Azem, U. Malayoğlu, A. Cakir

引用次数: 0