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The Behaviour of Vertical Bell laboratories Layered Space-Time Algorithm Combined with Multiuser Detection Schemes in Wireless Communication System

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Communications and Network 2011年第2期3卷 51-56页

作者： Ayodeji James Bamisaye Olugbenga Kayode Ogidan Babatope Osalope 不详

This paper provides the performance analysis of multiuser Vertical Bell laboratories Layered Space-Time (V-BLAST) system receiver structures for Multiple-input Multiple-Output (MIMO) channel at a base station with assumption of perfect channel estimation and perfect timing delay estimation. In MIMO channels the receivers such as decorrelator, Minimum Mean Square Error (MMSE) and Multistage Parallel Interference Cancellation (MPIC) receiver outperform the conventional receiver. Withal, since the multiple antenna interference led to a strong impact on the performance degradation of a multistage interference cancellation receiver, the performance of MPIC receiver was highly degraded based on system loading.

关键词： Cdma Multiple-Input Multiple-Output (Mimo) Channel Multiuser Detection Vertical Bell laboratories Layered Space-Time (V-Blast)

Evaluation of Asbestos Exposure Associated with Research laboratories

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Occupational Diseases and Environmental Medicine 2019年第1期7卷 13-20页

作者： Ediberto Garcia Daniel Newfang Jayme Coyle Giffe T. Johnson Raymond D. Harbison Center for Environmental and Occupational Risk Analysis and Management College of Public Health University of South Florida Tampa FL USA

Asbestos containing materials (ACM) have been used for decades in research laboratory products including gloves, tong sleeves, Transite board, and other materials. These materials typically contain chrysotile asbestos with concentrations ranging up to 80%. The objective of this research was to evaluate asbestos exposure from gloves, tong sleeves, and Transite board with simulated laboratory use. An environmental chamber was used to simulate laboratory application of the products. Bulk samples of various products were tested before and after use. Personal breathing zone air samples as well as one cumulative air sample were collected during testing and followed the National Institute for Occupational Safety and Health (NIOSH) 7400/7402 methodologies. Phase contrast microscopy (PCM) and transmission electron microscopy (TEM) were used for sample analyses. Analysis of air samples using PCM, showed airborne fiber concentrations as high as 0.058 f/cc during use of tongs fitted with asbestos sleeves. Further analysis using TEM showed that the highest airborne fiber concentration was 0.0036 f/cc. Manipulation of Transite board resulted in 8-hour time-weighted-average (TWA) asbestos levels as high as 0.02 f/cc. Testing of various asbestos containing materials used in research laboratories indicate low potential for asbestos fiber exposures.

关键词： Asbestos Exposure Research laboratories Transite Board Tong Sleeves Gloves Chrysotile Asbestos Laboratory Products Asbestos-Related Disease Asbestos-Containing Material

E-Commerce and E-Technology Contribution in Engineeringand Scientific laboratories Equipments Contracts at JordanianUniversities

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Management Studies 2020年第1期8卷 20-26页

作者： Sayel MFayyad Ghazi Almarahleh Naser Kloub Ahmad SAwad Mohannad ORawashdeh Al-Balqa Applied University AmmanJordan

This paper presents the role of E-commerce and E-technology in simplifying operations of preparing quotations and contracts of supporting engineering and scientific laboratories by required equipments and tools at Jordanian universities.The experimental and practical sides of education in scientific colleges in Jordanian universities is very important,so many quotations and contacts are performed and required each year,and E-commerce also offers the required information and specifications to persons responsible to do such contacts by using Business-to-Consumer,Consumer-to-Consumer or Business-to-Business principles.By searching about such equipments using search engines,many companies present their products and their specifications and give you the opportunity to select the suitable devices and tools depending on their specifications and prices.Case studies are discussed for some devices to show how much E-commerce simplifies this operation.It was found that E-commerce and E-technology reduces both time and efforts required to support both engineering and scientific labs with their needs from equipments,catalogs and tools required to such devices.

关键词： E-commerce E-technology laboratories quotations contracts

Result of China National Accreditation for laboratories Achieving Good Credit

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China Standardization 2005年第4期50卷 5-6页

With the efforts of the past 10 years,the accreditation system for laboratories,which is complete in range,integrate on function and normative on operation,has been set up in China,and has achieved good reputation hom... 详细信息

关键词： laboratories supervision inspection cooperation reputation expanded passed registered validity purchase

Comparison of Chlorophyll and Photosynthesis Parameters of Floating and Attached Ulva prolifera

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Journal of Integrative Plant Biology 2011年第1期53卷 25-34页

作者： Apeng Lin Songdong Shen Guangce Wang Qianqian Yi Hongjin Qiao Jianfeng Niu Guanghua Pan Key Laboratory of Experimental Marine Biology Institute of Oceanology the Chinese Academy of Sciences Qingdao 266071 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Department of Cell Biology Medical College of Soochow University Suzhou 215123 China College of Marine Science and Engineering Tianjin University of Science & Technology Tianjin 300457 China

In mid-May 2008 a serious green tide caused mainly by floating Ulva prolifera （Mvller） J. Agardh （Chlorophyta, Ulvales） thalli struck the coastal area of Qingdao, China. To understand the present physiological conditions of the floating alga, in this work both laboratory and field investigations were conducted on the floating U. prolifera thalli in comparison with the attached U. prolifera thalli collected from the area. The floating thalli of three distinctively different colors and attached thalli at three different stages of sporangium formation process were characterized under a microscope, while their photosynthetic parameters were determined with chlorophyll fluorescence technology. On the other hand, the sporangium formation status of the floating U. prolifera thalli was surveyed both in the laboratory and in the field. Comparisons showed that both of the paired morphological characteristics and the paired physiological parameters of the floating and attached U. prolifera thalli were consistent. Furthermore, some spores were confirmed in the field and some motile particles were found within the floating thalli. These results suggest that the floating U. prolifera thalli with different colors could be at different stages of sporangium formation. However, our results also showed that the floating alga thalli have only a limited reproductive potential. This might limit the duration and the further geographic expansion of the green algal bloom.

关键词： Greening Algae Fields Colour laboratories

Sharing experiences from a reference laboratory in the public health response for Ebola viral disease, MERS-CoV and H7N9 influenza virus investigations

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Asian Pacific Journal of Tropical Medicine 2016年第2期9卷 199-200页

作者： T.S.Saraswathy Subramaniam Ravindran Thayan Mohd Apandi Yusof Jeyanthi Suppiah Tengku Rogayah Tg Abd Rashid Zarina Mohd Zawawi Nor Aziyah Mat Rahim Fauziah Kassim Rozainanee Mohd Zain Zainah Saat Virology Unit Institute for Medical Research

The International Health Regulations was enforced in June 2007,emphasizing the obligation of State Parties to detect,report,and respond to public health emergencies[1].An effective public health response requires a coordinated laboratory response in the Ministry of Health(MOH)network with credible laboratories capable of providing accurate and reliable results in a timely manner to enable effective public health measures

关键词： obligation providing coordinated enable timely capable laboratories manner sequencing detecting

Our experience in sperm morphology assessment

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Asian Journal of Andrology 2011年第2期13卷 201-202页

作者： Julia Irene Ariagno Susana Mercedes Curi Patricia Chenlo Herberto Ernesto Hector Repetto Mercedes Norma Pugliese Luis Alberto Palaoro Melba Sardi Gabriela Ruth Mendeluk Laboratory of Male Fertility Department of ClinicalBiochemistry INFIBIOC Faculty of Pharmacy andBiochemistry University of Buenos Aires BuenosAires 1120 Argentina

We read with great interest the article recently published by Menkeveld et aL1 as we have a double interest in sperm morphology assessment. The first one as a Clinical Andrology Laboratory （Laboratory of Male Fertility, Department of Clinical Biochemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Argentina）

关键词： Semen Mankind Biochemistry Argentina (fish) Argentina Argentina (Federal District) laboratories

14th Five-Year Plan gets off to a good

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Changjiang Weekly 2022年第3期 8-9页

作者： Song Lei Yang Yuze Lu Shan Li Xu 不详

Parts of achievements of 2021★The construction of the East Lake Science City was fully launched;seven Hubei laboratories were put into operation;three major scientific and technological infrastructure facilities and two state key laboratories were approved;a national human genetic resource bank was built;Wuhan Institute of Industrial Innovation and Development and Wuhan Institute of Quantum Technology were established.

关键词： Wuhan laboratories approved

Nuclear Cardiology, The Basics 2nd ed. 2008

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