检索结果-南通市图书馆

Miniaturized multicolor fluorescence imaging system integrated with a PDMS light-guide plate for biomedical investigation

引用

npj Flexible Electronics 2023年第1期7卷 494-503页

作者： Hyogeun Shin Gun-Wook Yoon Woongsun Choi Donghwan Lee Hoyun Choi deok su jo Nakwon Choi Jun-Bo Yoon Il-joo Cho Department of Biomedical Sciences College of MedicineKorea UniversitySeoulRepublic of Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)DeajeonRepublic of Korea Center for Brain Technology Brain Science InstituteKorea Institute of Science and Technology(KIST)SeoulRepublic of Korea Biotechnology Research Institute of CHROMACH Co. LtdSuwonRepublic of Korea School of Chemical Engineering Sungkyunkwan University(SKKU)SuwonRepublic of Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulRepublic of Korea Department of Anatomy College of MedicineKorea UniversitySeoulRepublic of Korea Noul Co. LtdYonginRepublic of Korea

Miniaturized fluorescence imaging systems are promising platforms that overcome the limited use of conventional microscopes in the biomedical ***,there are physical limitations for multicolor fluorescence imaging in existing miniaturized imaging systems because multiple filters have to be integrated into a small ***,we present a miniaturized multicolor fluorescence imaging system integrated with single polydimethylsiloxane(PDMS)light-guide plate(LGP)for multicolor fluorescence *** PDMS LGP allows guiding the transmitted light from the light source only to the fluorescent samples regardless of the wavelength of the light ***,our system is capable of multicolor fluorescence imaging without multiple filters that block the excitation *** demonstrated the usability of our system in the biomedical field by observing green-and red-labeled cells in the *** proposed system can be used in a wide range of applications for studies that require multicolor fluorescence imaging in the biomedical field.

关键词： structure field system

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Characteristics of bifurcation and buckling load of space truss in consideration of initial imperfection and load mode

引用

journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第3期14卷 206-218页

作者： su-deok SHON Seung-jae LEE Kang-guk LEE School of Architectural Engineering Korea University of Technology and Education1800 ChungjeolroCheonan ChungnamRepublic of Korea Research Center for Urban Affair Kyungil UniversityGyeongsan-city GyeongbukRepublic of Korea

This study investigated characteristics of bifurcation and critical buckling load by shape imperfection of space truss,which were sensitive to initial *** critical point and buckling load were computed by the analysis of the eigenvalues and determinants of the tangential stiffness *** two-free-nodes example and star dome were selected for the case study in order to examine the nodal buckling and global buckling by the sensitivity to the eigen buckling mode and the analyses of the influence,and characteristics of the parameters as defined by the load ratio of the center node and surrounding node,as well as rise-span ratio were *** sensitivity to the imperfection of the initial shape of the two-free-nodes example,which occurs due to snapping at the critical point,resulted in bifurcation before the limit point due to the buckling mode,and the buckling load was reduced by the increase in the amount of *** two sensitive buckling patterns of the numerical model are established by investigating the displaced position of the free nodes,and the asymmetric eigenmode greatly influenced the behavior of the imperfection shape whether it was at limit point or ***,the sensitive mode of the two-free-nodes example was similar to the in-extensional basis mechanism of a simplified *** star dome,which was used to examine the influence among several nodes,indicated that the influence of nodal buckling was greater than that of global buckling as the rise-span ratio was ***,global buckling is occurred with reaching bifurcation point as the value of load ratio was higher,and the buckling load level was about 50%-70% of load level at limit point.

关键词： Space truss Geometric nonlinearity Initial imperfection Snap-through Bifurcation Global buckling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Review on Tidal Energy Technologies and Research subjects

引用

China Ocean Engineering 2020年第1期34卷 137-150页

作者： Chul Hee jo su Jin HWANG Department of Naval Architecture and Ocean Engineering Inha University

Tidal current power is one of the promising and reliable renewable energies with the advantage of continuous and predictable resource. It can make stable electricity regardless of weather conditions or seasons all year around. The required technologies for tidal current power in the ocean have been developed for years and now recognized that it could be commercialized after intensive field tests and successful demonstrations. There are several tidal farm development projects in the world, such as the MeyGen project in UK with its commercialization at hand. However, various research subjects in the tidal current energy field are seeking improvements and industrialization of tidal current power in terms of economy and technical reliability. This paper introduces the resource assessment procedure of tidal energy that has been applied in Korea coastal regions. The key research subjects for tidal current power together with the interaction effect of multi-arrangement is described. Also, this paper is to introduce the research output of each subject such as turbine design, experimental validation, turbine interaction and wake, multi-array module, FSI (fluid-structure interaction), and duct application.

关键词： tidal current power resource assessment turbine design experimental validation turbine interaction multi arrangement FSI(fluid-structure interaction)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Smooth cutting pattern generation technique for membrane structures using geodesic line on subplane and spline interpolation

引用

journal of Central South University 2013年第11期20卷 3131-3141页

作者： SHON su-deok LEE Seung-jae LEE Kang-guk School of Architectural Engineering Korea University of Technology and Education Research Center for Building safety Kyungpook National University

Practical techniques for smooth geodesic patterning of membrane structures were *** the geodesic search,adjustment of the subplane of the extracted elements series was proposed,and various spline approximation methods were used to flatten the strip for the generation of a smooth *** search approach is very simple,and the geodesic line could be easily attained by the proposed method without the need for a difficult computation *** cutting patterning can also be generated by spline approximation without the noise in discrete nodal ***,the geodesic cutting pattern saved about 21%of the required area for the catenary model due to the reduction of the curvature of the planar pattern seam line.

关键词： membrane structures cutting pattern generation geodesic line spline interpolation triangular mesh sub-plane

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Numerical evaluation of buckling behavior in space structure considering geometrical parameters with joint rigidity

引用

journal of Central South University 2014年第3期21卷 1115-1124页

作者： su-deok Shon Kyung-Ju Hwang Seung-Jae Lee School of Architectural Engineering Korea University of Technology and Education School of Architecture University of Seoul

The buckling behavior of single layer space structure is very sensitive. The joint rigidity, moreover, is one of the main factors of stability which may determine the entire failure behavior. Thus, the reasonable stiffness of joint system, which is neither total pin assumption nor perfect fix condition, is very important to apply to the real single layer space one. Therefore, the purpose of this work was to investigate the buckling behavior of single layer space structure, using the development of the upgraded stiffness matrix for the joint rigidity. To derive tangential stiffness matrix, a displacement function was assumed using translational and rotational displacement at the node. The geometrical nonlinear analysis was simulated not only with perfect model but also with imperfect one. As a result, the one and two free nodal numerical models were investigated using derived stiffness matrix. It was figured out that the buckling load increases in proportion to joint rigidity with rise-span ratio. The stability of numerical model is very sensitive with the initial imperfection, responding of bifurcation in the structure.

关键词： space frame geometric nonlinearity snap-through bifurcation initial imperfection joint rigidity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Roles of somatic A-type K^+ channels in the synaptic plasticity of hippocampal neurons

引用

Neuroscience Bulletin 2014年第3期30卷 505-514页

作者： Yoon-Sil Yang Kyeong-deok Kim su-Yong Eun sung-Cherl Jung Department of Physiology School of Medicine Jeju National University Institute of Medical Science Jeju National University

In the mammalian brain, information encoding and storage have been explained by revealing the cellular and molecular mechanisms of synaptic plasticity at various levels in the central nervous system, including the hippocampus and the cerebral cortices. The modulatory mechanisms of synaptic excitability that are correlated with neuronal tasks are fundamental factors for synaptic plasticity, and they are dependent on intracellular Ca2＋-mediated signaling. In the present review, the A-type K＋（IA） channel, one of the voltage-dependent cation channels, is considered as a key player in the modulation of Ca2＋ influx through synaptic NMDA receptors and their correlated signaling pathways. The cellular functions of IA channels indicate that they possibly play as integral parts of synaptic and somatic complexes, completing the initiation and stabilization of memory.

关键词： A-type K+ channels intrinsic excitability synaptic plasticity NMDA receptors Kv4.2

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of Cu addition on formability and surface delamination phenomenon in high-strength high-Mn steels

引用

journal of Materials Science & Technology 2020年第8期36卷 44-51页

作者： Min Chul jo Jisung Yoo Min Cheol jo Alireza Zargaran Seok su Sohn Nack J.Kim sunghak Lee Center for Advanced Aerospace Materials Pohang University of Science and TechnologyPohang 37673South Korea Graduate Institute of Ferrous Technology Pohang University of Science and TechnologyPohang 37673South Korea Department of Materials Science and Engineering Korea UniversitySeoul 02841South Korea

The formability of austenitic high-Mn steels is a critical issue in automotive applications under nonuniformly-deformed environments caused by dynamic strain *** austenite stabilizing alloying elements in those steels,Cu has been known as an effective element to enhance tensile properties via controlling the stacking fault energy and stability of *** effects of Cu addition on formability,however,have not been sufficiently reported *** this study,the Cu addition effects on formability and surface characteristics in the austenitic high-Mn TRIP steels were analyzed in consideration of inhomogeneous microstructures containing the segregation of Mn and *** reveal determining factors,various mechanical parameters such as total elongation,post elongation,strain hardening rate,normal anisotropy,and planar anisotropy were correlated to the hole-expansion and cup-drawing test *** respect to microstructural parameters,roles of(Mn,Cu)-segregation bands and resultant Cu-rich FCC precipitates on the formability and surface delamination were also discussed.

关键词： High-Mn steel Cu effects Cu-rich FCC phase Hole-expansion test Formability Stretch-flangeablity surface delamination

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Electroacupuncture on PC6 Prevents Opioid-Induced Nausea and Vomiting after Laparoscopic surgery

引用

Chinese journal of Integrative Medicine 2013年第4期19卷 277-281页

作者： Siwoo Lee Myeong Soo Lee deok Hwa Choi su Kyung Lee Korea Institute of Oriental Medicine University of Science and Technology DaejeonSouth Korea Department of Anesthesiology Wonkwang University School of MedicineIksanSouth Korea Department of Oriental Rehabilitation Medicine Wonkwang University School of Oriental MedicineIksanSouth Korea

Objective： To investigate the treatment time dependence of electroacupuncture （EA） on Neiguan （PC6） for preventing postoperative nausea and vomiting （PONV）. Methods： One hundred and seventy-eight patients, who had received intravenous patient-controlled analgesia （PCA） with Fentanyl, were assigned randomly to three groups using random numbers： a pre-operative EA group （PrEA）, a post-operative EA group （PoEA）, and a non-acupuncture control group （NC）. An anesthetist evaluated the incidence and severity of nausea and vomiting for 48 h after surgery blindly. The main outcomes were severity and freguency of PONV, which were measured with a self-reported questionnaire and a confirmation from the anesthetist. The data were analyzed with ANOVA and Z-test. Results： The incidence of nausea and vomiting was significantly lower in the PrEA group than the NC group during 48 h after surgery （P〈0.01, P〈0.05）. The incidence of vomiting was also significantly lower in the PrEA group than the PoEA group （P〈0.05）. The PoEA subjects evidenced no significant differences compared with the NC subjects in terms of the incidence of nausea and vomiting （P〈0.05）. The severity of nausea was significantly lower in the PrEA group than in the NC and PoEA groups （P〈0.05）. Conclusions： EA on PC6 is effective in the prevention of PONV, and pre-operative acupuncture is more effective than post-operative acupuncture.

关键词： electroacupuncture Neiguan (PC6) postoperative nausea and vomiting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Development of a simple model for batch and boundary information updation for a similar ship's block model

引用

Science China(Information Sciences) 2012年第5期55卷 1019-1031页

作者： LEE Hyeon-deok SON Myeong-jo OH Min-jae LEE Hyung-woo KIM Tae-wan Daewoo Shipbuilding & Marine Engineering Co. LTD.Geoje 656-714South Korea Department of Naval Architecture and Ocean Engineering Seoul National UniversitySeoul 151-744South Korea Research Institute of Marine Systems Engineering Seoul National UniversitySeoul 151-744South Korea

In early 2000,large domestic shipyards introduced shipbuilding 3D computer-aided design (CAD) to the hull production design process to define manufacturing and assembly *** production design process accounts for most of the man-hours (M/H) of the entire design process and is closely connected to yard production because designs must take into account the production schedule of the shipyard,the current state of the dock needed to mount the ship’s block,and supply ***,many shipyards are investigating the complete automation of the production design process to reduce the M/H for ***,these problems are still currently unresolved,and a clear direction is needed for research on the automatic design base of manufacturing rules,batches reflecting changed building specifications,batch updates of boundary information for hull members,and management of the hull model change history to automate the production design *** this study,a process was developed to aid production design engineers in designing a new ship’s hull block model from that of a similar ship previously built,based on AVEVA *** automation system that uses the similar ship’s hull block model is proposed to reduce M/H and human errors by the production design ***,scheme files holding important information were constructed in a database to automatically update hull block model ***,for batch updates,the database’s table,including building specifications and the referential integrity of a relational database were *** particular,this study focused on reflecting the frequent modification of building specifications and regeneration of boundary information of the adjacent panel due to changes in a specific ***,the rollback function is proposed in which the database (DB) is used to return to the previously designed panels.

关键词： ship design production design model reuse model history management referential integrity scheme file

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Effects of cryogenic temperature on tensile and impact properties in a medium-entropy VCoNi alloy

引用

journal of Materials Science & Technology 2021年第31期90卷 159-167页

作者： Dae Cheol Yang Yong Hee jo Yuji Ikeda Fritz Kormann Seok su Sohn Department of Materials Science and Engineering Korea University02841 SeoulSouth Korea Metallic Materials Division Korea Institute of Materials Science51508 ChangwonSouth Korea Institute for Materials Science University of StuttgartPfaffenwaldring 5570569 StuttgartGermany Max-Planck-Institut für Eisenforschung Max-Planck-Straβe 140237 DüsseldorfGermany Department of Materials Science and Engineering Delft University of TechnologyMekelweg 22628 CD DelftThe Netherlands

Multi-principal element alloys usually exhibit outstanding strength and toughness at cryogenic temperatures,especially in CrMnFeCoNi and CrCoNi *** remarkable cryogenic properties are attributed to the occurrence of deformation twins,and it is envisaged that a reduced stacking fault energy(SFE)transforms the deformation mechanisms into advantageous properties at cryogenic temperatures.A recently reported high-strength VCoNi alloy is expected to exhibit further notable cryogenic ***,no attempt has been made to investigate the cryogenic properties in detail as well as the underlying deformation ***,the effects of cryogenic temperature on the tensile and impact properties are investigated,and the underlying mechanisms determining those properties are revealed in terms of the temperature dependence of the yield strength and deformation *** the strength and ductility were enhanced at 77 K compared to 298 K,while the Charpy impact toughness gradually decreased with *** planar dislocation glides remained unchanged at 77 K in contrast to the CrMnFeCoNi and CrCoNi alloys resulting in a relatively constant and slightly increasing SFE as the temperature decreased,which is confirmed via ab initio ***,the deformation localization near the grain boundaries at 298 K changed into a homogeneous distribution throughout the whole grains at 77 K,leading to a highly sustained strain hardening *** reduced impact toughness is directly related to the decreased plastic zone size,which is due to the reduced dislocation width and significant temperature dependence of the yield strength.

关键词： Medium-entropy alloy Cryogenic temperature Tensile property Charpy impact property Stacking fault energy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：