检索结果-内蒙古大学图书馆

The Effects of Chemical Fixation on the Cellular Nanostructure: A Correlative Study of Back-Scattered Interference Spectrometry Microscopy and TEM

引用

Microscopy and Microanalysis 2016年第S3期22卷 234-235页

作者： Yue Li Luay Almassalha John Chandler Yolanda Cyrus Reiner Bleher Hariharan Subramanian Igal Szleifer Vadim Backman Vinayak Dravid Applied Physics Program Northwestern University Interdisciplinary Biological Sciences Graduate Program Northwestern University Biomedical Engineering Department Northwestern University Materials Sciences and Engineering Department Northwestern University Chemistry of Life Processes Institute Northwestern University

来源：评论

学校读者我要写书评

暂无评论

Interaction of free-jet flow with applied AC electric fields 10

Interaction of free-jet flow with applied AC electric fields

引用

10th Asia-Pacific Conference on Combustion, ASPACC 2015

作者： Kim, Gyeong Taek Lee, Won June Park, Jeong Kwon, Oh Boong Keel, Sang In Yun, Jin Han Kim, Min Kuk Lee, Sang Min Lee, Kee Man Dept. of Mechanical Engineering Pukyong National University Busan Korea Republic of Interdisciplinary Program of Biomedical Engineering Pukyong Nat'l Univ. Busan Korea Republic of Environment and Energy Research Division Korea Institute of Machinery and Materials Daejeon Korea Republic of Dept. of Aerospace Engineering Sunchon Nat't Univ. Sunchon Korea Republic of

The characteristics of gaseous laminar free-jet flow have been investigated experimentally by applying AC electric fields with a single electrode configuration. The jet flows were affected significantly by AC electric fields particularly at high voltages for applied frequencies less than 120 Hz, while those were not responded to further increased frequencies. It was shown that the limit frequency (120 Hz) could be associated with the collision frequency. For the frequencies less than 120 Hz, the laminar gaseous fuel stem was broken down at an axial distance and subsequently separated into three parts. The velocity fields in jet flows interacting with applied electric fields were compared with those without having electric fields. The results also showed that such breakdown heights with nozzle exit velocities decreased monotonously for all gaseous fluids used. The spread angle of fuel stem increased and then decreased with applied frequency after showing a maximum around 43Hz. Interaction of applying electric fields with laminar free jet flow was discussed in detail, and the possible mechanism was also explained.

关键词： Electric fields

来源：评论

学校读者我要写书评

暂无评论

Non-contact finger vein acquisition system using NIR laser

Non-contact finger vein acquisition system using NIR laser

引用

Sensors, Cameras, and Systems for Industrial/Scientific Applications X

作者： Kim, Jiman Kong, Hyoun-Joong Park, Sangyun Noh, SeungWoo Lee, Seung-Rae Kim, Taejeong Kim, Hee Chan Interdisciplinary Program Graduate School Seoul National University Seoul Korea Republic of Department of Electrical Engineering and Computer Sciences Seoul National University Seoul Korea Republic of Department of Biomedical Engineering College of Medicine Seoul National University Seoul Korea Republic of Institute of Medical and Biological Engineering Medical Research Center Seoul National University Seoul Korea Republic of

Authentication using finger vein pattern has substantial advantage than other biometrics. Because human vein patterns are hidden inside the skin and tissue, it is hard to forge vein structure. But conventional system using NIR LED array has two drawbacks. First, direct contact with LED array raise sanitary problem. Second, because of discreteness of LEDs, non-uniform illumination exists. We propose non-contact finger vein acquisition system using NIR laser and Laser line generator lens. Laser line generator lens makes evenly distributed line laser from focused laser light. Line laser is aimed on the finger longitudinally. NIR camera was used for image acquisition. 200 index finger vein images from 20 candidates are collected. Same finger vein pattern extraction algorithm was used to evaluate two sets of images. Acquired images from proposed non-contact system do not show any non-uniform illumination in contrary with conventional system. Also results of matching are comparable to conventional system. We developed Non-contact finger vein acquisition system. It can prevent potential cross contamination of skin diseases. Also the system can produce uniformly illuminated images unlike conventional system. With the benefit of non-contact, proposed system shows almost equivalent performance compared with conventional system. © 2009 SPIE-IS&T.

关键词： Biometrics

来源：评论

学校读者我要写书评

暂无评论

Study of Cell Encapsulation System in Using Thai Silk Fibroin-Based Hydrogel 15

Study of Cell Encapsulation System in Using Thai Silk Fibroi...

引用

15th biomedical engineering International Conference, BMEiCON 2023

作者： Suksomthong, Nitchaya Aueviriyavit, Sasitorn Ratanavaraporn, Juthamas Chulalongkorn University Interdisciplinary Program of Biomedical Engineering Faculty of Engineering Bangkok Thailand Nano Safety and Bioactivity Research Team Pathum Thani Thailand Faculty of Engineering Chulalongkorn University Biomed. Eng. Prog. Biomed. Eng. Res. Ctr. Biomaterial Eng. for Medical and Health Research Unit Bangkok Thailand

ISBN: (纸本)9798350345247

Designing biomimetic tissue models and developing scaffolds under cell-compatible protocols are a challenge in the field of tissue engineering. Cell encapsulation technique was selected with hydrogel fabrication due to its similarity to the condition within the human body. This study proposed SF-based hydrogels with the aim of application as cell encapsulation matrix. The vital properties, including gelation, diffusion, and cell viability were evaluated. SF/DMPG hydrogels exhibited rapid gelation and sufficient diffusion. L929 cells encapsulated in SF/DMPG survived after the fabrication process, with proliferation occurred at day 1 of culture which was done in static condition. The developed hydrogels showed potential application as a cell encapsulation matrix using tissue engineering, especially bioink. © 2023 IEEE.

关键词： Hydrogels

来源：评论

学校读者我要写书评

暂无评论

Complete mitochondrial genome of Spanish flag snapper,Lutjanus carponotatus(Perciformes: Lutjanidae)

引用

Mitochondrial DNA Part B 2019年第1期4卷 568-569页

作者： Gyungryul Kim Ji-Hyun Lee Md. Jobaidul Alam Soo Rin Lee Sapto Andriyono Fisheries Resource Research Division National Institute of Fisheries Science (NIFS) Busan Republic of Korea Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Republic of Korea Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Republic of KoreaDepartment of Marine Fisheries and Marine Faculty Universitas Airlangga Surabaya East Java Indonesia

The comple mitogenome of Spanish flag snapper,Lutjanus carponotatuswas determined by next generation sequencing (NGS) technique. The mitogenome ofL. carponotatus(16,514bp) habors 37 genes (22 tRNAs, 2 rRNAs, 13 polypeptides) and two non-coding regions, the origin of light strand replication (OL) and the putative control region (D-Loop). Among the 37 genes inL. carponotatusmitogenome, 28 were encoded on the H-strand, whereas only 9 were on the L-strand. Phylogenetic relationship showed that the full mitochondrial genome sequencesL. carponotatuswas most closely related toLutjanus russelliiwith 93% sequence identity clustering withLutjanus fulviflamma(92%) andLutjanus vitta(91%).

关键词： Next generation sequencing Lutjanus carponotatus mitogenome Spanish flag snapper

来源：评论

学校读者我要写书评

暂无评论

Characterization of the complete mitochondrial genome of Gangetic ailia,Ailia coila(Siluriformes: Ailiidae)

引用

Mitochondrial DNA Part B 2019年第2期4卷 2258-2259页

作者： Md. Jobaidul Alam Sapto Andriyono Soo Rin Lee Mostafa A. R. Hossain A. T. M. Eunus Md. Tawheed Hassan Hyun-Woo Kim Interdisciplinary Program of Biomedical Department Mechanical and Electrical Engineering Pukyong National University Busan Republic of Korea Interdisciplinary Program of Biomedical Department Mechanical and Electrical Engineering Pukyong National University Busan Republic of KoreaFisheries and Marine Faculty Universitas Airlangga Surabaya Indonesia Department of Fisheries Biology & Genetics Bangladesh Agricultural University Mymensingh Bangladesh WorldFish Dhaka Bangladesh Department of Aquaculture Sylhet Agricultural University Sylhet Bangladesh Interdisciplinary Program of Biomedical Department Mechanical and Electrical Engineering Pukyong National University Busan Republic of KoreaDepartment of Marine Biology Pukyong National University Busan Republic of Korea

The first complete mitochondrial genome sequence ofAilia coilafrom Bangladesh was determined by the bioinformatic assembly of the next generation sequencing (NGS) reads. The constructed circular mitogenome forA. coilawas 16,565 bp in length which harbored the canonical 13 protein-coding genes, 22 tRNAs, 2 rRNAs. Two non-coding regions, control region,D-loop(927 bp), and origin of light strand replication, OL(30 bp) were also well conserved in the mitogenome. Among the currently reported mitochondrial genomes in the order Siluriformes,A. coilawas most closely related toEutropiichthys vacha(AB919123) with 85.63% sequence identity.

关键词： Next-generation sequencing Ailia coila mitochondrial genome Bangladesh

来源：评论

学校读者我要写书评

暂无评论

In vivo observation of blood echogenicity variation during a cardiac cycle on human carotid arteries

In vivo observation of blood echogenicity variation during a...

引用

IEEE Symposium (IUS) Ultrasonics

作者： Dong-Guk Paeng B.S. Kim MinJoo Choi R.Y. Chiao K.K. Shung Interdisciplinary Program of Biomedical Engineering Cheju National University Jeju South Korea Department of Biomedical Engineering University of Southern California Los Angeles CA USA GE Medical Systems Milwaukee WI USA

A cyclic variation of blood echogenicity from human iliac arteries in vivo was first observed using an intravascular 30 MHz ultrasound imaging device. Several studies have confirmed the temporal variation of the backscattered power during a flow cycle but they were all from in vitro experiments. In this paper, cyclic variation of echogenicity in vivo on human carotid arteries (7 males and 3 females) was observed from harmonic images of a GE LOGIQ 700 expert system with an M12L probe. Blood echogenicity increased at early systole, reaching a maximum at peak systole, and then decreased to be weak during diastole. Echogenicity during systole was about 40 to 60 % higher than that during diastole for all radial positions. The ratio of the maximum echogenicity during systole to the mean echogenicity during diastole was small at the center and near the vessel wall, and became large between them. The cyclic variation of blood echogenicity is thought to be due to erythrocyte aggregation enhancement by the combined effects of flow acceleration and shear rate during systole.

关键词： In vivo Blood Humans Carotid arteries In vitro Expert systems biomedical engineering biomedical imaging Ultrasonic imaging Acceleration

来源：评论

学校读者我要写书评

暂无评论

Development of wireless urodynamic pressure-flow study system

Development of wireless urodynamic pressure-flow study syste...

引用

World Congress on Medical Physics and biomedical engineering: Diagnostic and Therapeutic Instrumentation, Clinical engineering

作者： Kong, Hyoun-Joong Park, Sunmee Oh, Seung June Kim, Hee Chan Interdisciplinary Program Graduate School Seoul National University Seoul Korea Republic of Department of Urology College of Medicine Seoul National University Seoul Korea Republic of College of Medicine Seoul National University Department of Biomedical Engineering 101 Daehang-Ro Jongno-Gu Seoul Korea Republic of

ISBN: (纸本)9783642038846

This paper presents a natural-filling wireless pressure-flow study (NFW-PFS) system for the diagnosis of urologic problems which many patients in older population suffer from. For the benign prostatic hyperplasia (BPH) patients, NFW-PFS was performed in a private room. Several features were extracted from the pressure and flow data and used to make the artificial neural network classifier which was able to predict the status of BPH patient's bladder outlet. Results showed good agreement with theoretical predictions based on clinical evidence and significant improvement over conventional urodynamic study (UDS) system in terms of several subjective parameters. The work presented here has profound implications for future studies of wearable UDS system and may one day help solve the problem of urodynamic application to home healthcare. © 2009 Springer-Verlag.

关键词： Diagnosis

来源：评论

学校读者我要写书评

暂无评论

Sleep apnea detection by slope analysis

Sleep apnea detection by slope analysis

引用

3rd IASTED International Conference on Medical engineering 2005

作者： Han, Jonghee Shin, Hongbeom Jeong, Do-Un Park, Kwangsuk Department of Biomedical Engineering College of Medicine and Hospital Seoul National University Seoul Korea Republic of Interdisciplinary Program College of Medicine and Hospital Seoul National University Seoul Korea Republic of Department of Psychiatry and Behavioral Science College of Medicine and Hospital Seoul National University Seoul Korea Republic of

ISBN: (纸本)0889864780

Detection of sleep apnea is the one of the major tasks in sleep medicine. Various methods have been applied to detect sleep apnea by analyzing different bio-signals. This paper introduces an innovative algorithm that analyze slope of nasal airflow signal in polysomnography. In this study, slope is obtained by the moving average of an absolute differentiation of a signal with 3.8 seconds' time window followed by segmentation of 1 second. Apnea threshold is determined by 10% of the slope of normal breathing. If segments having slope below apnea threshold appear for 10 consecutive segments, those segments are marked as apnea. The presented algorithm analyzed polysomnography records from 13 subjects and detected 2500 apnea events. Performance of presented algorithm was evaluated by comparing its results against the sleep specialist's manual scoring on same records. The overall agreement rate between the two was 95.36% (κ=0.86). In considering its simplicity and lower computational load, the presented algorithm is robust and useful.

关键词： Sleep research

来源：评论

学校读者我要写书评

暂无评论

Heart sounds measurement using PVDF film sensor and their comparison with RR intervals of ECG signals

Heart sounds measurement using PVDF film sensor and their co...

引用

IEEE-EMBS International Conference on biomedical and Health Informatics, BHI 2012. In Conj. with the 8th Int. Symp.on Medical Devices and Biosensors and the 7th Int. Symp. on biomedical and Health engineering

作者： Lee, Won Kyu Chung, Gih Sung Baek, Hyun Jae Park, Kwang Suk Interdisciplinary Program for Bioengineering Seoul National University 111 Fundamental Medical Research Building I 101 Daehak-ro Jongno-gu Seoul Korea Republic of Interdisciplinary Program for Bioengineering Seoul National University 713 Fundamental Medical Research Building I 101 Daehak-ro Jongno-gu Seoul Korea Republic of Interdisciplinary Program for Bioengineering Seoul National University 807 Fundamental Medical Research Building I 101 Daehak-ro Jongno-gu Seoul Korea Republic of Department of Biomedical Engineering Seoul National University College of Medicine 103 Daehak-ro Jongno-gu Seoul Korea Republic of

ISBN: (纸本)9781457721779

Heart sounds are generated by the fluctuations of blood velocity and the vibrations of cardiac structure. The auscultation of heart sounds is one of the basic tools for patient diagnosis and provides a lot of information associated with cardiovascular systems. For converting mechanical sound waves into electronic signals, PVDF (polyvinylidene fluoride) film sensor was used as heart sounds measurement device. After suited filtering process, the first (S1) and the second (S2) heart sounds components were plainly distinguished and their peak timings were closely corresponded to reference heart sounds signals measured by microphone. Lastly, there was high correlation between S1 intervals (from PVDF signals) and RR intervals (from ECG signals). So it is expected that S1 intervals can replace RR intervals. In future application, these methods have possibilities for non-intrusive heart rate estimation. © 2012 IEEE.

关键词： Heart

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：