A pilot study to evaluate learning style�Ctailored information prescriptions for hypertensive emergency department patients     

Taneya Y Koonce  Nunzia B Giuse  Alan B Storrow 《Journal of the Medical Library Association》2011,99(4):280-289

  相似文献   

浅谈云计算及其发展现状     

涂小强  陈海莲 《科技广场》2011,(3)

云计算是基于多种技术的商业计算模型,将是21世纪的一种发展趋势,本文主要介绍了云计算的概念、特点、实现机制、提供的服务以及目前国内外的研究发展现状。  相似文献   

Electrophoretic separation of neurotransmitters on a polystyrene nano-sphere∕polystyrene sulphonate coated poly(dimethylsiloxane) microchannel     

Zhao J  Zhang Q  Yang H  Tu Y 《Biomicrofluidics》2011,5(3):34104-341049

In this paper, a poly(dimethylsiloxane) microchip with amperometric detector was developed for the electrophoretic separation and determination of neurotransmitters. For increasing the separation efficiency, the microchannel is modified by polystyrene sulphonate∕polystyrene nano-sphere self-assembly coating. A stable electro-osmotic flow (EOF) and higher separation efficiency are obtained in proposed modified microchannel. Under optimized conditions, dopamine, epinephrine, catechol, and serotonin are acceptably baseline separated in this 3.5 cm length separation channel with the theoretical plate number from 4.6?×?10(4) to 2.1?×?10(5) per meter and resolution from 1.29 to 12.5. The practicability of proposed microchip is validated by the recovery test with cerebrospinal fluid as real sample which resulted from 91.7% to 106.5%.  相似文献   

Electrophoretic separation of neurotransmitters on a polystyrene nano-sphere�Mpolystyrene sulphonate coated poly(dimethylsiloxane) microchannel     

Jinjin Zhao  Qianli Zhang  Huijuan Yang  Yifeng Tu 《Biomicrofluidics》2011,5(3):034104-034104-9

In this paper, a poly(dimethylsiloxane) microchip with amperometric detector was developed for the electrophoretic separation and determination of neurotransmitters. For increasing the separation efficiency, the microchannel is modified by polystyrene sulphonate∕polystyrene nano-sphere self-assembly coating. A stable electro-osmotic flow (EOF) and higher separation efficiency are obtained in proposed modified microchannel. Under optimized conditions, dopamine, epinephrine, catechol, and serotonin are acceptably baseline separated in this 3.5 cm length separation channel with the theoretical plate number from 4.6 × 10⁴ to 2.1 × 10⁵ per meter and resolution from 1.29 to 12.5. The practicability of proposed microchip is validated by the recovery test with cerebrospinal fluid as real sample which resulted from 91.7% to 106.5%.  相似文献   

Beijing's West District Library Enhances International Cooperation     

Xi Tu 《中外文化交流(英文版)》2011,(10):46-47

<正>The West District Library of Beijing is China’s first county/district-level public library granted with the member status of the International Federation of ...  相似文献   

Bandpass sorting of heterogeneous cells using a single surface acoustic wave transducer pair     

Gergely Simon  Caroline Busch  Marco A. B. Andrade  Julien Reboud  Jonathan M. Cooper  Marc P. Y. Desmulliez  Mathis O. Riehle  Anne L. Bernassau 《Biomicrofluidics》2021,15(1)

Separation and sorting of biological entities (viruses, bacteria, and cells) is a critical step in any microfluidic lab-on-a-chip device. Acoustofluidics platforms have demonstrated their ability to use physical characteristics of cells to perform label-free separation. Bandpass-type sorting methods of medium-sized entities from a mixture have been presented using acoustic techniques; however, they require multiple transducers, lack support for various target populations, can be sensitive to flow variations, or have not been verified for continuous flow sorting of biological cells. To our knowledge, this paper presents the first acoustic bandpass method that overcomes all these limitations and presents an inherently reconfigurable technique with a single transducer pair for stable continuous flow sorting of blood cells. The sorting method is first demonstrated for polystyrene particles of sizes 6, 10, and 14.5 μm in diameter with measured purity and efficiency coefficients above 75 ± 6% and 85 ± 9%, respectively. The sorting strategy was further validated in the separation of red blood cells from white blood cells and 1 μm polystyrene particles with 78 ± 8% efficiency and 74 ± 6% purity, respectively, at a flow rate of at least 1 μl/min, enabling to process finger prick blood samples within minutes.  相似文献   

Optimum calibration of a parallel kinematic manipulator using digital indicators     

V. B. Saputra S. K. Ong A. Y. C. Nee 《上海大学学报(英文版)》2014,(3):222-230

This paper presents a calibration method for parallel manipulators using a measurement system specially installed on an external fixed frame. The external fixed frame is important as an error reference for calibration in certain operations, such as in the configuration of a parallel manip- ulator functioning as a machine tool where the workpiece is fixed to a worktable. The pose of the end-effector is mea- sured using three digital indicators installed on the external fixed frame. To enable measurement, the end-effector is assumed to be a plane large enough that all digital indicators could touch. The error is defined as the difference between the theoretical and actual readings of the digital indicators. The geometric parameters of the parallel manipulator are optimized to minimize this error. This calibration method is low cost and feasible for compensating geometric parameter errors for a parallel manipulator. Optimal pose selection for the calibration is achieved using a swarm intelligence search algorithm. The method is implemented on a prototype of a six degrees-of-freedom （DOFs） Gough-Stewart platform constructed to function as a machine tool.  相似文献   

Student learning performance in online collaborative learning     

Ng  Peggy M. L.  Chan  Jason K. Y.  Lit  Kam Kong 《Education and Information Technologies》2022,27(6):8129-8145

Education and Information Technologies - Online collaborative learning (OCL) has received significant attention, but the ultimate goal of adopting OCL is neglected, especially in higher education...  相似文献   

Innovative students’ academic advising for optimum courses’ selection and scheduling assistant: A Blockchain based use case     

Al-Imamy  Samer Y.  Zygiaris  Sotirios 《Education and Information Technologies》2022,27(4):5437-5455

Education and Information Technologies - Advising students through their study plans is one of the essential steps towards academic success. The matching of students’ needs and courses...  相似文献   

高职制药校内外生产性实训基地功能定位探析     

阮建兵  李倩  张婷  涂小进  金学平 《黄冈职业技术学院学报》2014,(1):95-97

针对高职制药类专业生产性实训基地建设水平低的现状,分析制药校内外生产性实训基地发展缓慢的原因,提出制药生产性实训基地建设首先要解决功能定位问题;制药类专业生产性实训基地应以药物研发、社会服务为方向,将“药品生产”型实训基地通过深化校企合作建在校外企业。  相似文献