Journal of Biomimetics, Biomaterials and Tissue Engineering最新文献_第2页

Improving Classification by Feature Discretization and Optimization for fNIRS-based BCI 基于特征离散和优化的基于fnir的脑机接口分类改进

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2014-01-01 DOI: 10.4172/1662-100X.1000119

Baolei Xu, Yunfa Fu, G. Shi, Xuxian Yin, Zhidong Wang, Hongyi Li

{"title":"Improving Classification by Feature Discretization and Optimization for fNIRS-based BCI","authors":"Baolei Xu, Yunfa Fu, G. Shi, Xuxian Yin, Zhidong Wang, Hongyi Li","doi":"10.4172/1662-100X.1000119","DOIUrl":"https://doi.org/10.4172/1662-100X.1000119","url":null,"abstract":"In this paper, we present a signal discretization and feature selection method to improve classification accuracy for fNIRS based brain computer interface (BCI) system, which can classifiy right hand clench force motor imagery and clench speed motor imagery at an accuracy of 69%-81% through 5 fold cross validation in 6 subjects. Difference between oxyhemoglobin and deoxyhemoglobin (we abbreviate this difference as HbD) is proposed as a new feature type and shows outstanding performance in some subjects. Linear kernal support vector machine (SVM) classification between clench force motor imagery and clench speed motor imagery using four concentration feature types (oxyhemoglobin, deoxyhemoglobin, totalhemoglobin, and HbD) is implemented. Our results demonstrate that feature discretization using Chi2 algorighm and feature optimization using ‘MIFS’ (Mutual Information Feature Selection) criterion can improve the classification accuracy by more than 35%. Except total hemoglobin, all the other three feature types can be used as the optimum feature for different subjects. The results of this paper can also be used in online BCI applications.","PeriodicalId":15198,"journal":{"name":"Journal of Biomimetics, Biomaterials and Tissue Engineering","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79337486","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: 10

Application of Biomimetic Scaffolds for Tissue Engineering 仿生支架在组织工程中的应用

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-12-26 DOI: 10.4172/1662-100X.1000E103

Xing Zhang

引用次数: 1

Recent Advances in Application of Tissue Engineering to Cancer Biology 组织工程在肿瘤生物学中的应用进展

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-12-26 DOI: 10.4172/1662-100X.1000E102

S. Lal

引用次数: 0

Biomimetic Scaffold Materials Used in Tissue Engineering 仿生支架材料在组织工程中的应用

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-12-26 DOI: 10.4172/1662-100X.1000E101

E. Kolos, A. Ruys

引用次数: 1

Osteoconduction and Bioresorption of Bone Allograft versus Anorganic Bovine Bone Xenograft: A Histomorphometric Study in Humans 同种异体骨移植物与无机牛骨移植物的骨传导和生物吸收:人体组织形态学研究

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-12-01 DOI: 10.4028/www.scientific.net/JBBTE.18.85

Sandro Bittencourt Sousa, Igor Iuco Castro‐Silva, Lawrence Andrade Costa da Rocha Coutinho, Ariel Lenharo, J. Granjeiro

{"title":"Osteoconduction and Bioresorption of Bone Allograft versus Anorganic Bovine Bone Xenograft: A Histomorphometric Study in Humans","authors":"Sandro Bittencourt Sousa, Igor Iuco Castro‐Silva, Lawrence Andrade Costa da Rocha Coutinho, Ariel Lenharo, J. Granjeiro","doi":"10.4028/www.scientific.net/JBBTE.18.85","DOIUrl":"https://doi.org/10.4028/www.scientific.net/JBBTE.18.85","url":null,"abstract":"This clinical study evaluated the tissue repair process using different bone grafts. Nine dental patients with indication for posterior implantodontic treatment were submitted to maxillary sinus lifting procedures associated to grafting. After 6 months, bone biopsies (6 sites with allogenous bone grafting and 13 sites with bovine xenogenous bone grafting/OsseusTM) were removed and processed for histopathological and histomorphometric analyses (ANOVA and Tukey's test). Both groups had tissue biocompatibility without significant inflammatory response, only punctual presence of multinucleated giant cells in xenograft group. Osteoconductive potential was evidenced by new bone tissue surrounding and in direct contact with the granules of both grafts. Volume density of connective tissue was similar between groups, although there were significant differences in allograft group in comparison to xenograft as the presence of new bone formation (48.50%±13.93 versus 29.83±9.56, respectively, p<0.05) and remnant biomaterial (1.57±2.39 versus 22.23±12.41, respectively, p<0.001), suggesting a greater osteoconductivity and faster bioresorption in the allograft group. These results demonstrate that allogenous bone and OsseusTM can be satisfactorily used as grafts in minor oral surgeries for bone augmentation in humans.","PeriodicalId":15198,"journal":{"name":"Journal of Biomimetics, Biomaterials and Tissue Engineering","volume":"45 1","pages":"85 - 95"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77440691","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: 10

An Overview of Intervertebral Disc Degeneration Therapies and an Evaluation of the Chondrogenic and Chemotactic Potential of CDMP-2 椎间盘退变治疗综述及CDMP-2的成软骨和趋化潜能评估

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-12-01 DOI: 10.4028/www.scientific.net/JBBTE.18.97

F. Y. Zhou, A. Wei, A. Diwan

引用次数: 2

Venation-Inspired Growth Technique for Stiffener Layout Design of Plate and Shell Structures 板壳结构加劲筋布置设计的启发生长技术

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-12-01 DOI: 10.4028/www.scientific.net/JBBTE.18.1

Kai Xue, Lei Li, Q. Li

{"title":"Venation-Inspired Growth Technique for Stiffener Layout Design of Plate and Shell Structures","authors":"Kai Xue, Lei Li, Q. Li","doi":"10.4028/www.scientific.net/JBBTE.18.1","DOIUrl":"https://doi.org/10.4028/www.scientific.net/JBBTE.18.1","url":null,"abstract":"A novel design method for stiffener layout of plate and shell structures is proposed in this paper. The method is inspired by the morphogenesis mechanism of dicotyledonous venation which is featured by hierarchy and functional adaptivity. It is expected that a optimal stiffener layout can be gradually achieved if the stiffeners extend by obeying a similar growth rule as the venation. Starting from the so called “seeds”, the stiffeners grow and branch off towards the direction that optimizes the structural performance. And the stiffeners with the minimum effectiveness to the structural performance are degenerated simultaneously. During the design process, the relative density of each element is treated as the design variable. The growth and degeneration of the stiffeners are determined by the nodal and elemental sensitivity numbers respectively. The design algorithm is programmed in Python and integrated with Abaqus software which is used as the FEA preprocessor and solver. To validate the effectiveness of the proposed method, it is applied to design the stiffener layouts of some typical structures with the objective of maximizing the overall stiffness with a volume constraint.","PeriodicalId":15198,"journal":{"name":"Journal of Biomimetics, Biomaterials and Tissue Engineering","volume":"38 1","pages":"1 - 12"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81006452","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

miR-143 is Associated with ER-α36 Expression Gastric Carcinoma of Xenografted Model miR-143与异种移植胃癌模型ER-α36表达相关

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-11-18 DOI: 10.4172/1662-100X.1000117

Zou Feng, Zhang Shangkun, Li Yan, Chen Ying, Li Lijiang

{"title":"miR-143 is Associated with ER-α36 Expression Gastric Carcinoma of Xenografted Model","authors":"Zou Feng, Zhang Shangkun, Li Yan, Chen Ying, Li Lijiang","doi":"10.4172/1662-100X.1000117","DOIUrl":"https://doi.org/10.4172/1662-100X.1000117","url":null,"abstract":"We investigated the expression profile of microRNA (miRNA) in ER-α36-mediated transplantable tumours. SGC7901 cell lines of higher or lower ER-α36 expression were constructed with a lentivirus vector. Five million SGC7901 cells were injected into nude mice to form a gastric xenografted carcinoma in the subcutaneous tissue of nude mice. Observation was performed for 30 days. The weight and propagation of the tumours were determined. miRNA expression profiles of the three SGC7901 cell lines were analysed by miRNA microarray. miR-143 expression in transplantable tumours was determined by real-time PCR using TaqMan assay. The expression level of ER-α36 was proportional to the size and propagation of gastric xenografted carcinomas in nude mice. The expression level of miR-143 significantly decreased in highly expressing ER-α36 SGC7901 cells and significantly increased in lowly expressing ER-α36 SGC7901 cells. miR-143 expression results in transplantable tumours amongst nude mice were consistent with the miRNA microarray findings. The expression of miR-143 was suppressed by high ER-α36 expression. These findings suggest that deregulation of miR-143 plays an important role in the progression of ER-α36-mediated gastric xenografted carcinoma.","PeriodicalId":15198,"journal":{"name":"Journal of Biomimetics, Biomaterials and Tissue Engineering","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79584940","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: 3

Study on Catalytic Ozone Oxidation with Nano-TiO2 Modified Membrane for Treatment of Municipal Wastewater 纳米tio2改性膜催化臭氧氧化处理城市污水的研究

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-10-17 DOI: 10.4172/1662-100X.1000113

Yueqi Zhu, Hongwei Zhang, Xuehua Zhang

{"title":"Study on Catalytic Ozone Oxidation with Nano-TiO2 Modified Membrane for Treatment of Municipal Wastewater","authors":"Yueqi Zhu, Hongwei Zhang, Xuehua Zhang","doi":"10.4172/1662-100X.1000113","DOIUrl":"https://doi.org/10.4172/1662-100X.1000113","url":null,"abstract":"In this paper, we studied the application of Nano-TiO2 Modified membrane technology in municipal wastewater treatment, which has not been previously reported to exhibit in this area. Ozone (O3) aeration can produce a large number of high oxidizing free radicals (hydroxyl radical HO•) to degrade organic matters when ozone contacts with nano- TiO2 Modified membrane, which process is called catalytic ozone oxidation process. This approach is a new frontier of municipal wastewater treatment, which has excellent reactive activity and degradation of organic compounds without the need of catalyst recycling. Our purpose is to remove organic matters by ozone aeration pre-treatment and nano-TiO2 modified membrane. This method is more efficient since it combines both chemical oxidation and physical filtration. In this study, municipal sewage is called raw water. Polyvinylidene fluoride (PVDF) and the nano-TiO2 modified PVDF ultrafiltration membranes are selected as experimental materials. Results suggest that the removal rate of organic matters with this new method (TiO2+O3) is 66.4%, which is 13.3% higher than original membrane with O3 (PVDF+O3) under the same condition. Therefore we can extract that, this part of contribution belongs to catalytic ozone oxidation process on TiO2 modified membrane. Compared with traditional PVDF membrane filtration, whose removal rate is 38.7%, this novel approach has a removal rate 27.7% higher.","PeriodicalId":15198,"journal":{"name":"Journal of Biomimetics, Biomaterials and Tissue Engineering","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89735808","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: 9

A Hybrid Cnn-Rf Method for Electron Microscopy Images Segmentation 一种用于电子显微镜图像分割的Cnn-Rf混合方法

Journal of Biomimetics, Biomaterials and Tissue Engineering Pub Date : 2013-10-15 DOI: 10.4172/1662-100X.1000114

Guibao Cao, Shuangling Wang, B. Wei, Yilong Yin, Gongping Yang

引用次数: 17