检索结果-南通市图书馆

亚致死剂量UV-C辐照抑制铜绿微囊藻生长的效果

在线全文

学校读者我要写书评

暂无评论

清华大学学报（自然科学版） 2010年第9期50卷 1412-1415页

作者：陶益毛献忠张锡辉袁侃 doris w t au 清华大学深圳研究生院环境工程与管理研究中心深圳518055 香港城市大学生物与化学系香港

铜绿微囊藻是中国典型的水华蓝藻。该文研究亚致死剂量短波紫外线（UV-C）辐照对其生长的抑制效果。采用准平行光束仪进行定量辐照处理,用共聚焦激光扫描显微镜进行藻细胞计数,用流式细胞术识别藻细胞膜完整性,三维荧光光谱分析藻蓝蛋... 详细信息

铜绿微囊藻是中国典型的水华蓝藻。该文研究亚致死剂量短波紫外线（UV-C）辐照对其生长的抑制效果。采用准平行光束仪进行定量辐照处理,用共聚焦激光扫描显微镜进行藻细胞计数,用流式细胞术识别藻细胞膜完整性,三维荧光光谱分析藻蓝蛋白及叶绿a的相对荧光水平。结果表明：对初始密度为106个/mL铜绿微囊藻,UV-C辐照能抑制藻细胞生长,亚致死剂量范围是50-100 mJ/cm^2,抑制效果可以持续7 d。

关键词：铜绿微囊藻亚致死剂量UV-C辐照生长抑制细胞膜完整性湖泊

在线全文

学校读者我要写书评

暂无评论

超滤运行过程中膜表面亲水性的变化特征

水处理技术 2013年第6期39卷 13-16页

作者：乔铁军 doris w t au 张锡辉清华大学深圳研究生院广东深圳518055 香港城市大学生物与化学系香港999077 深圳市水务(集团)有限公司广东深圳518031

为了研究膜亲水性在超滤运行过程中的变化规律,采用小试装置,研究了在不同运行状况下的膜接触角变化。结果表明,在长期的运行过程中,膜接触角均不同程度地下降。单独水反冲洗和化学加强反洗对接触角的影响较小。膜接触角在过滤周期内先... 详细信息

为了研究膜亲水性在超滤运行过程中的变化规律,采用小试装置,研究了在不同运行状况下的膜接触角变化。结果表明,在长期的运行过程中,膜接触角均不同程度地下降。单独水反冲洗和化学加强反洗对接触角的影响较小。膜接触角在过滤周期内先升高再降低。随着通量的增加,膜接触角逐渐降低。与沉后水相比,活性炭过滤出水更易引起膜接触角下降。随着pH升高,膜接触角会上升。化学清洗使膜接触角增加,当用NaOH清洗时,接触角变化不大;而用HCl和NaClO清洗时,接触角明显增加。总之,膜表面亲水性在运行过程中会发生一定变化,并且受到原水水质、操作参数和反冲洗方式等方面影响。

关键词：膜超滤亲水性接触角化学清洗

黑点青鳉在海洋生态毒理学研究中的应用与展望(摘要)

在线全文

学校读者我要写书评

暂无评论

黑点青鳉在海洋生态毒理学研究中的应用与展望(摘要)

F4ESS-a framework for interdisciplinary data-driven earth system science

福建省海洋学会2012年学术年会

作者：薄军 doris w t au 王克坚郑榕辉张玉生国家海洋局第三海洋研究所香港城市大学生物化学系//海洋污染国家重点实验室厦门大学海洋与环境学院//近海海洋环境科学国家重点实验室

黑点青鳉(Oryzias melastigma)是近年来国际上在海洋生态毒理学研究中日益广泛应用的硬骨鱼类模式生物。其特点是体型小,终生生活于海水中,实验室内易于饲养;世代周期较短;产卵规律、胚胎透明;雌、雄性别通过形态学易于辨别;同一批次的... 详细信息

黑点青鳉(Oryzias melastigma)是近年来国际上在海洋生态毒理学研究中日益广泛应用的硬骨鱼类模式生物。其特点是体型小,终生生活于海水中,实验室内易于饲养;世代周期较短;产卵规律、胚胎透明;雌、雄性别通过形态学易于辨别;同一批次的个体之间生长速率比较一致等。本文就目前利用黑点青鳉建立的主要研究技术平台(包括基因组学数据库、DNA芯片平台、全鱼的原位杂交和免疫组织化学技术、胚胎芯片技术等)及黑点青鳉在不同研究领域的应用(包括免疫毒理学、生态毒理学、环境基因组学、发育生物学等领域,特别是在海洋生态毒理学研究中的应用)进行了综述。

关键词：黑点青鳉海洋污染模式鱼类生态毒理学

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

International Journal of Digital Earth 2023年第1期16卷 3973-3986页

作者： doris Dransch Daniel Eggert Mike Sips Remote sensing and Geoinformatics Helmholtz Center Potsdam–German Research Center for GeosciencePotsdamGermany Geography Department Humboldt-University at BerlinBerlinGermany

Earth system science is an interdisciplinary effort to understand the fundamentals and interactions of environmental *** research is challenging since it demands the integration of scientific schemes and practices from different research fields into a collaborative work *** paper introduces the framework F4ESS that supports this integration.F4ESS provides methods and technologies that facilitate the development of integrative work environments for Earth system science.F4ESS enables scientists a)to outline structured and summarized descriptions of scientific procedures to facilitate communication and synthesis,b)to combine a large variety of distributed data analysis software into seamless data analysis chains and workflows,c)to visually combine and interactively explore the manifold spatiotemporal data and results to support understanding and knowledge *** F4ESS methods and technologies are generic and can be applied in various scientific *** discuss F4EsS in the context of the interdisciplinary investigation of flood events.

关键词： Earth system science interdisciplinary research scientific workflows integration

the contribution of maps to the challenges of risk communication to the public

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Digital Earth 2010年第3期3卷 292-311页

作者： doris Dransch Henry Rotzoll Kathrin Poser Helmholtz Centre Potsdam German Research Centre for GeosciencesPotsdamGermany Institute for Geography Humboldt-University BerlinBerlinGermany Center for Disaster Management and Risk Reduction technology(CEDIM) PotsdamGermany

Risk communication is a significant challenge in risk *** serves different purposes;an important one is to improve the public risk awareness and *** of the strong spatio-temporal component of natural hazards,maps can play a decisive role in communicating risk *** application and design of maps for risk communication especially to the public has not been investigated *** constraints and challenges of risk communication have not been considered systematically in the map design process so *** study aims at developing a frame for the application and design of interactive risk and hazard maps for the public which is based on the specific constraints and challenges of risk *** a literature review it introduces concepts and methods from social sciences and psychology,which have been assessed as important for communicating risk *** concepts and methods are adapted to map-mediated risk communication according to the approaches of Activity *** objectives and tasks which are essential to improve risk mitigation are identified and geovisualization methods for information presentation are related according to the degree which they are able to serve *** on this,some principles for map-based risk communication are established.

关键词： risk management risk communication risk mitigation risk maps task-oriented geovisualization Digital Earth visualization geoinformatics GIS

Clear cell hepatocellular carcinoma: origin,metabolic traits and fate of glycogenotic clear and ground glass cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2017年第6期16卷 570-594页

作者： Peter Bannasch Silvia Ribback Qin Su doris Mayer German Cancer Research Center HeidelbergGermany Institut fur Pathologie Universitatsmedizin Greifswald Greifswald Germany Cell Marque Millipore-Sigma Rocklin USA

Clear cell hepatocellular carcinoma(CCHCC)has hitherto been considered an uncommon, highly differentiated variant of hepatocellular carcinoma(HCC) with a relatively favorable prognosis. CCHCC is composed of mixtures of clear and/or acidophilic ground glass hepatocytes with excessive glycogen and/or fat and shares histology, clinical features and etiology with common HCCs. Studies in animal models of chemical, hormonal and viral hepatocarcinogenesis and observations in patients with chronic liver diseases prone to develop HCC have shown that the majority of HCCs are preceded by, or associated with, focal or diffuse excessive storage of glycogen(glycogenosis) which later may be replaced by fat(lipidosis/steatosis). In ground glass cells, the glycogenosis is accompanied by proliferation of the smooth endoplasmic reticulum, which is closely related to glycogen particles and frequently harbors the hepatitis B surface antigen(HBs Ag).From the findings in animal models a sequence of changes has been established, commencing with preneoplastic glycogenotic liver lesions, often containing ground glass cells, and progressing to glycogen-poor neoplasms via various intermediate stages, including glycogenotic/lipidotic clear cell foci, clear cell hepatocellular adenomas(CCHCA) rich in glycogen and/or fat, and CCHCC. A similar process seems to take place in humans, with clear cells frequently persisting in CCHCC and steatohepatitic HCC, which presumably represent intermediate stages in the development rather than particular variants of HCC. During the progression of the preneoplastic lesions,the clear and ground glass cells transform into cells characteristic of common HCC. the sequential cellular changes are associated with metabolic aberrations, which start with an activation of the insulin signaling cascade resulting in preneoplastic hepatic glycogenosis. the molecular and metabolic changes underlying the glycogenosis/lipidosis are apparently responsible for the dramatic metabo

关键词： clear cell hepatocellular carcinoma phenotypic heterogeneity glycogenosis lipidosis preneoplastic glycogenosis progression metabolic aberrations

Dynamic Diurnal Changes in Green Algae Biomass in the Southern Yellow Sea Based on GOCI Images

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2020年第4期19卷 811-817页

作者： JIANG Binbin FAN Daidu JI Qingyuan OBODOEFUNA doris Chigozie State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China School of Civil Engineering and Geosciences Newcastle UniversityNewcastle Upon Tyne NE31QDUK Institute of Oceanography Zhejiang Geological Institute of China Metallurgical Geology BureauQuzhou 324000China

Macroalgae blooms of Ulva prolifera have occurred every summer in the southern Yellow Sea since 2007,inducing severe ecological problems and huge economic *** and secular movement of green algae blooms have been well monitored by using remote sensing and other *** this study,green algae were detected and traced by using Geostationary Ocean Color Imager(GOCI),and a novel biomass estimation model was developed from the relationship between biomass measurements and previously published satellite-derived biomass *** results show that the green algae biomass can be determined most accurately with the biomass index of green algae for GOCI(BIGAG),which is calculated from the Rsurf data that had been atmospherically corrected by ENVI/QUAC *** the first time,dynamic changes in green algae biomass were studied over an hourly ***-term biomass changes were highly influenced by Photosynthetically Available Radiation(PAR)and tidal phases,but less by sea surface temperature variations on a daily timescale.A new parameter of biomass changes(PBC),calculated by the ratio of the biomass growth rate to movement velocity,could provide an effective way to assess and forecast green tide in the southern Yellow Sea and similar areas.

关键词： green algae biomass GOCI BIGAG parameterizing biomass change

Relative abundance of Phlebotominae sandflies with emphasis on vectors of kala-azar

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of tropical Medicine 2010年第4期3卷 270-271页

作者： Naveen Samuel Singh doris Phillips-Singh Department of Zoology Lucknow Christian CollegeGolaganjLucknow-226018(U.P.) India

Objective:to identify potential vectors of kala-azar from Northern plains of Uttar Pradesh, ***:the collections were made using sticky paper traps,CDC light-traps,and aspirators from outdoors as well as *** female sandflies were dissected and identified. Results:During January 2009 to July 2009,528 phlebotomine specimens were collected including 329 males(62.3%) and 199 females(37.7%),approximately 238(45%) of them were captured from indoor and 290(55%) from outdoor resting *** species belonging to the genera Phlebotomus(8%) and Sergentomyia(92%) were ***:Public health measures such as case detection and treatment,the control of sandflies,the conjunction elimination of infected stray dogs and health education can be effective in controlling the disease.

关键词： Phlebotominae sandflies Kala-azar Vector

Recent progress of cultivated meat in Asia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food Materials Research 2022年第1期2卷 113-120页

作者： Yeshi Liang doris Lee GFI Consultancy Yuanjiang Rd#5500Minxing DistrictShanghai 201111China

Accelerated by recent technological advancements,alternative proteins(AP)offer new opportunities to produce meat alternatives in a more sustainable,efficient,and secure way compared to conventional animal *** a primary category of AP,cultivated meat(CM),which is grown in vitro from animal cells,rather than raising livestock,provides a new approach to creating meat that is identical to conventional *** Asia was not the first region to invest in CM research,scientists and technologists have made significant strides across the continent in recent *** article summarizes some of the most notable CM developments and advancements in four Asian countries(China,Japan,South Korea,and Singapore)spanning the areas of research and education,commercialization,and policy and ***,key insights into the challenges and opportunities that Asia’s cultivated meat industry will encounter in the years ahead are also provided.

关键词： policy education advancement