检索结果-南通市图书馆

维普期刊数据库

电子化公众参与在英国新型地方规划系统中的作用

在线全文

学校读者我要写书评

暂无评论

电子政务 2009年第10期 127-141页

作者： richard kingston 王瑞雪宋华琳曼彻斯特大学(University of Manchester)环境和发展学院南开大学法学院天津300071

电子化公众参与在英国城市规划体系中扮演着日益重要的角色。这一方面得益于一系列有关城市规划的规范与政策的出台,新型的规划模式为公众参与提供了程序性保障;另一方面也归功于现代科技的发展,地理信息系统、能动性协商参与工具等电... 详细信息

电子化公众参与在英国城市规划体系中扮演着日益重要的角色。这一方面得益于一系列有关城市规划的规范与政策的出台,新型的规划模式为公众参与提供了程序性保障;另一方面也归功于现代科技的发展,地理信息系统、能动性协商参与工具等电子规划技术得以运用。同时也必须看到,在英国的城市规划系统中,电子化公众参与还存在着诸如电子规划工具普及率不高、交互性参与不足以及参与成本较高等需要改进之处。

关键词：电子规划公众参与地方规划地方发展框架英国

维普期刊数据库

Three global conditions for biodiversity conservation and sustainable use: an implementation framework

在线全文

学校读者我要写书评

暂无评论

National Science Review 2019年第6期6卷 1080-1082页

作者： Harvey Locke Erle C.Ellis Oscar Venter richard Schuster Keping Ma Xiaoli Shen Stephen Woodley Naomi kingston Nina Bhola Bernardo B.N.Strassburg Axel Paulsch Brooke Williams James E.M.Watson Beyond the Aichi Targets Task Force IUCN World Commission on Protected Areas and Yellowstone to Yukon Conservation Initiative Department of Geography and Environmental Systems University of Maryland Natural Resources and Environmental Studies Institute University of Northern British Columbia Department of Biology Carleton University State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences IUCN World Commission on Protected Areas UN Environment Programme World Conservation Monitoring Centre UNEP-WCMC

’Nature and its vital contributions to people, which together embody biodiversity and ecosystem functions and services, are deteriorating worldwide’ [1].The United Nations Convention on Biological Diversity(CBD) is intended to ensure conservation of biodiversity,its wise use, and sharing of benefits from use of genetic resources. Through

关键词： Three global conditions for biodiversity conservation and sustainable use an implementation framework

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

与中国市场一同步入新阶段

中国电子商情 2014年第1期 50-52页

作者： richard kingston CEVA公司

2013年强大的市场推动力量是LTE/LTE-Advanced移动通信、用于汽车电子的音频和卫星通信,以及用于信息娱乐的音频和计算机视觉技术.CEVA的DSP IP适用于以上所有三个领域,并且,公司在2013年获得了很大的成功.这三种产品类别之间相互渗透,... 详细信息

2013年强大的市场推动力量是LTE/LTE-Advanced移动通信、用于汽车电子的音频和卫星通信,以及用于信息娱乐的音频和计算机视觉技术.CEVA的DSP IP适用于以上所有三个领域,并且,公司在2013年获得了很大的成功.这三种产品类别之间相互渗透,当然,对于消费者而言,信息娱乐和多媒体内容是强大的吸引力之一,特别是平板电脑,当然也包括智能手机和车载娱乐系统.就用于移动领域的通信技术而言,2013年这个行业继续加速推出LTE和LTE-Advanced产品.CEVA发布了用于无线基础架构的XC4500 IP产品,由于XC4500在单一芯片上提供了LTE或LTE-A基站可能性,CEVA认为它为LT和LTE-A扩建做出了显着的贡献.2013年CEVA宣布的一个主要的新授权许可是中兴通讯(ZTE)采用CEVA DSP用于基站芯片.

关键词： DSP CEVA 汽车电子领域电动汽车电动车辆中华人民共和国语音激活智能手机 LTE 车辆锂离子电池锂离子二次电池锂电池无人驾驶汽车面部检测未来十年谷歌音频

维普期刊数据库

Re： Is PAWP the ＇real＇ sperm factor？

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2015年第3期17卷 446-449页

作者： Mahmoud Aarabi Peter Sutovsky richard Oko Department of Human Genetics School of Medicine McGill University Montreal QC Canada Division of Animal Sciences University of Missouri Columbia MO USA Departments of Obstetrics Gynecology and Women's Health School of Medicine University of Missouri Columbia MO USA Department of Biomedical and Molecular Sciences School of Medicine Queen's University Kingston ON Canada

This letter is in response to an article written by Michail Nomikos, Karl Swann and F. Anthony Lai in the Research Highlights section of the Asian Journal of Andrology （AJA）. The article is entitled, ＂Is PAWP the ＇real＇ sperm factor？＂ and was written in response to our article entitled, ＂Sperm-derived WW domain-binding protein, PAWP, elicits calcium oscillations and oocyte activation in human and mouse＂ published recently in FASEB Jol According to the Science Editor of AJA, ＂Research Highlight＂ pieces are brief articles that are meant to report on publications from the primary literature. Along those lines, we were delighted to read an insightful comment on our FASEB article prepared for AJA by Dr. George L Gerton.

关键词： PHOSPHOLIPASE-C-ZETA DOMAIN-BINDING-PROTEIN OOCYTE ACTIVATION CA2+ RELEASE PLC-ZETA CALCIUM OSCILLATIONS PATTERN FERTILIZATION EGGS RGD

Flying Capacitor Design Considerations for a 48-to-12 V,35 A Split-phase Dickson SC Converter

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Electrical Engineering 2020年第4期6卷 28-41页

作者： richard(Yue) Sun Samuel Webb Yan-Fei Liu Department of Electrical and Computer Engineering Queen's UniversityKingston K7L 3N6Canada

Switched-capacitor converters can deliver better performance,power density,and switch utilization compared to inductor-based power converters,but they suffer from current spikes during switching due to capacitor charge *** can be solved by methods such as split-phase control,which was developed to address charge redistribution in Dickson SC converters by controlling the charging and discharging of the circuit‟s flying capacitors,such that the equivalent branch voltages line up when the circuit switches ***,split-phase control is most effective at compensating for charge redistribution when all the circuit‟s flying capacitors are matched in capacitance *** between the capacitance values of the circuit flying capacitors may result in split-phase control not being able to fully compensate for charge redistribution,due to the different charge/discharge rates of the flying *** work presented in this paper provides an in-depth analysis of the sensitivity of the split-phase Dickson converter to mismatches in flying capacitor values,as well as discussions regarding the design considerations and prototype test results of a split-phase Dickson converter for high-current loads.

关键词： Switched-capacitor converter Dickson converter split-phase control capacitor mismatch

Negative biomarker-based male fertility evaluation： sperm phenotypes associated with molecular-level anomalies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2015年第4期17卷 554-560页

作者： Peter Sutovsky Mahmoud Aarabi Antonio Miranda-Vizuete richard Oko Division of Animal Science and Departments of Obstetrics Gynecology and Women's Health University of Missouri Columbia Missouri USA Department of HumanGenetics McGill University Quebec Canada Department of Biomedical and Molecular Sciences Institute de Biomedicina de Sevilla Hospital Universitario Virgen delRocb/CSIC/Universidad de Sevilla Sevilla Spain Queens University Kingston Ontario Canada.

Biomarker-based sperm analysis elevates the treatment of human infertility and ameliorates reproductive performance in livestock. The negative biomarker-based approach focuses on proteins and ligands unique to defective spermatozoa, regardless of their morphological phenotype, lending itself to analysis by flow cytometry （FC）. A prime example is the spermatid specific thioredoxin SPTRX3/TXNDC8, retained in the nuclear vacuoles and superfluous cytoplasm of defective human spermatozoa. Infertile couples with high semen SPTRX3 are less likely to conceive by assisted reproductive therapies （ART） and more prone to recurrent miscarriage while low SPTRX3 has been associated with multiple ART births. Ubiquitin, a small, proteolysis-promoting covalent posttranslational protein modifier is found on the surface of defective posttesticular spermatozoa and in the damaged protein aggregates, the aggresomes of spermiogenic origin. Semen ubiquitin content correlates negatively with fertility and conventional semen parameters, and with sperm binding of lectins LCA （Lens culinaris agglutinin; reveals altered sperm surface） and PNA （Arachis hypogaealpeanut agglutinin; reveals acrosomal malformation or damage）. The Postacrosomal Sheath WWl Domain Binding Protein （PAWP）, implicated in oocyte activation during fertilization, is ectopic or absent from defective human and animal spermatozoa. Consequently, FC-parameters of PAWP correlate with ART outcomes in infertile couples and with fertility in bulls. Assays based on the above biomarkers have been combined into multiplex FC semen screening protocols, and the surface expression of lectins and ubiquitin has been utilized to develop nanoparticle-based bull semen purification method validated by field artificial insemination trials. These advances go hand-in-hand with the innovation of FC-technology and genomics/proteomics-based biomarker discovery.

关键词： artificial insemination biomarker fertility fertilization flow cytometry infertility nanotechnology oocyte activation Postacrosomal Sheath WWI Domain Binding Protein sperm SPTRX3 thioredoxin ubiquitin

Trace-Level Analysis of Hexavalent Chromium in Lake Sediment Samples Using Ion Chromatography Tandem Mass Spectrometry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Protection 2016年第3期7卷 422-434页

作者： Stefanie Mädler Fengrong Sun Cindy Tat Nadya Sudakova Peter Drouin Robert J. Tooley Eric J. Reiner Teresa A. Switzer richard Dyer H. M. Skip kingston Matt Pamuku Vasile I. Furdui Laboratory Services Branch Ontario Ministry of the Environment and Climate Change Ontario Canada Conservation Ontario Ontario Canada Department of Chemistry University of Toronto Ontario Canada Ontario Geological Survey Ontario Ministry of Northern Development and Mines Ontario Canada Department of Chemistry and Biochemistry Duquesne University Pittsburgh USA Applied Isotope Technologies Pittsburgh USA

The analysis of hexavalent chromium, Cr(VI), in soil and sediment samples has been predominantly carried out in materials containing elevated levels. Reliable analysis of trace-level of Cr(VI) in sediment samples remains challenging. Cr(VI) analyses with multipoint calibration and speciated isotope dilution (SID) adapted from U.S. EPA method 6800 were used to measure lower-level Cr(VI) on an ion chromatograph coupled with a tandem mass spectrometer (IC-MS/MS). Lake sediment samples were collected from various locations in Northern Ontario and Cr(VI) was extracted using both alkaline digestion and ethylene diaminetetraacetic acid (EDTA) extraction. Certified reference materials were extracted and analyzed by IC-MS/MS and UV-VIS detection. The SID-MS approach allowed for the quantification of Cr(VI) in samples with concentration levels below 0.5 μg.g-1 wet weight.

关键词： Trace-Level Analysis Ion Chromatography Tandem Mass Spectrometry Chromium Speciation Speciated Isotope Dilution

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

EGF转基因鼠研究的展望

生物化学与生物物理学报 2001年第5期33卷 473-476页

作者：黄颍泉董铭麦经纶陈小圆东京大学医学部研究生院解剖和细胞生物学系!东京01130033 日本香港大学Queen Mary医院儿科系!香港中国

通过基因工程这一有力的工具 ,改变了信号转导级联反应中从配体本身开始 ,通过特异受体到达下游的单个或一组基因 ,来研究信号转导的特殊性、互补性及重复性 ,已得到了大量关于肿瘤基因和生长因子的信息。转基因鼠和含有改变基因的鼠系... 详细信息

通过基因工程这一有力的工具 ,改变了信号转导级联反应中从配体本身开始 ,通过特异受体到达下游的单个或一组基因 ,来研究信号转导的特殊性、互补性及重复性 ,已得到了大量关于肿瘤基因和生长因子的信息。转基因鼠和含有改变基因的鼠系被广泛应用于有关上皮生长因子受体 (EGFR)及其配体 ,胰岛素样生长因子(IGF)受体及其结合蛋白的研究。综述了近年来EGF和IGF I/胰岛素样生长因子结合蛋白 (IGFBP)转基因鼠模型的主要进展 ,同时基于现有的转基因模型 ,概述了活体中EGF和IGFBP的最新研究成果 ,重点在于通过各种转基因及基因剔除模型的使用 ,研究EGF和IGF在生殖、生长和发育中的调节作用

关键词：上皮生长因子受体胰岛素样生长因子结合蛋白胰岛素样生长因子转基因鼠过量表达

A Simulation of Reflected ADS-B Signals over the North Atlantic for a Spaceborne Receiver

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Positioning 2016年第1期7卷 51-62页

作者： richard Van Der Pryt Ron Vincent Department of Physics Royal Military College of Canada Kingston Canada

Automatic Dependent Surveillance-Broadcast (ADS-B) is an air traffic surveillance technology in which aircraft broadcast position, identification and status an average of 6.2 times per second on 1090 MHz. The Royal Military College of Canada has developed an ADS-B receiver that is scheduled to fly as a technology demonstrator on the Canadian Advanced Nanospace eXperiment-7 (CanX-7) nanosatellite. A signal propagation model was developed to determine the power level and number of signals that will be detected by CanX-7. Since the ADS-B messages are alternately transmitted from upper and lower antennas, both the direct and reflected signals were considered. A simulation using the model was run over the North Atlantic with aircraft data supplied by air traffic services and a satellite altitude of 800 km. Power at the receiver for reflected ADS-B signals ranged from -109.5 to -118 dBm depending on aircraft-satellite geometry and was approximately 18 dBm less than the direct path signal strength. With a sensitivity of -103 dBm, the CanX-7 ADS-B receiver should detect virtually all of the direct path signals while reflected signals are below the detection threshold. Although the reflected signals should not be a factor for the CanX-7 mission, they could be a consideration for a large operational satellite with a more sensitive receiver. The reception of both direct and reflected ADS-B signals from multiple aircraft could lead to signal collisions and subsequent loss of aircraft tracking information, particularly in coastal regions where there are additional sources of the 1090 MHz signal.

关键词： ADS-B Satellite Air Traffic Control Ocean Scattering