检索结果-南通市图书馆

Modeling of Earth Magnetic Field Disturbances Induced by Ferromagnetic Objects

在线全文

学校读者我要写书评

暂无评论

Journal of Mechanics Engineering and Automation 2015年第7期5卷 411-414页

作者： Michal Nowicki Roman szewczyk Industrial Research Institute for Automations and Measurements PIAP Warsaw 02-486 Poland Institute of Metrology and Biomedical Engineering Warsaw University of Technology Warsaw 02-525 Poland

This paper presents the methodology and results of modelling of Earth magnetic field disturbances induced by ferromagnetic objects. The modeling was carried out using the finite elements calculations, and the results were compared with the measurements. The special test stand, consisting of magnetovision scanner and Helmholtz coils, has been used. The measurement system is able to measure the distribution of planar magnetic induction vectors, and to differentiate the sources of measured disturbances.

关键词： Magnetovision magnetic anomalies FEM (finite element method)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

加料流率对SFBR工艺去除营养物的影响

湖北工业大学学报 2006年第2期21卷 1-5页

作者：邵友元 krzysztof W.szewczyk 李卫黄光斗孙俊逸湖北工业大学化学和环境工程学院湖北武汉430068 华沙理工大学化学工程系

采用序半连续式反应器在不同的加料流率下,对人工合成废水营养物的去除进行了研究.氮化合物的去除是在一个操作循环中采用顺序进行硝化和反硝化反应,加料流率分别为0.05,0.10,0.15 L/h 3个不同的水平,不同的加料流率对COD,氮化合物(NH4-... 详细信息

采用序半连续式反应器在不同的加料流率下,对人工合成废水营养物的去除进行了研究.氮化合物的去除是在一个操作循环中采用顺序进行硝化和反硝化反应,加料流率分别为0.05,0.10,0.15 L/h 3个不同的水平,不同的加料流率对COD,氮化合物(NH4-N和NO3-N)去除和微生物生长的影响进行了研究.结果表明,加料流率对COD、氮化合物(NH4-N和NO3-N)去除和微生物生长的都有一定的影响.当加料流率为0.05 L/h时,COD有最高去除率(84%)、最高的总氮去除率(64%),微生物的生长速率没有明显的影响.并利用一组涉及到多个微生物反应的动力学数学模型,分析了加料流率对同时去除碳、氮化合物率和微生物生长的影响.

关键词：序半连续式反应器活性污泥硝化反硝化

Research of the Thermal Parameters and the Accuracy of Flow Measurement of the Biological Fuel

在线全文

学校读者我要写书评

暂无评论

Journal of Mechanics Engineering and Automation 2015年第7期5卷 415-419页

作者： Igor Korobiichuk Shavursky Yurij Michal Nowicki Roman szewczyk Industrial Research Institute for Automations and Measurements PIAP Warsaw 02-486 Poland Zhytomyr State Technological University Zhytomyr 10005 Ukraine Institute of Metrology and Biomedical Engineering Warsaw University of Technology Warsaw 02-525 Poland

The heat parameters, the thermoanemometric flow-meter （TAF） errors and the experimental characteristics have been defined. The results of experiments were conducted with the help of physically-informational models allowing to realize all major thermal methods and their inherent informative options. The metrological evaluation was made and the sensitivity to the consumption of gas and liquid have been defined, their static and dynamic errors, followed by the comparison of costs according to these criteria. The developed method provides accurate measurement of volumetric flow of motor fuel 1.0-1.5% at heater temperature measurement accuracy of 1%.

关键词： Thermoanemometric flow-meter biological fuel physically-informational models

Secondary Metabolites in Flax Root Extracts at Various Stages of Maturity and Effects on Proliferation and Cytotoxicity in Oestrogen-Receptor-Positive Breast Cancer 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

Advances in Biological Chemistry 2014年第2期4卷 91-97页

作者： Marlen szewczyk Nicole Strater André Schlichting Volker Briese Dagmar-Ulrike Richter Department of Obstetrics and Gynaecology Faculty of Medicine University of Rostock Rostock Germany Institute for Land-Use Faculty of Agricultural and Environmental Sciences University of Rostock Rostock Germany

Flax contains large amounts of hormone-like compounds, especially lignans. These socalled phytoestrogens are thought to inhibit the cell growth of hormone-sensitive cancers. Hence, we analysed the influence of flax root extracts at various stages of maturity on the proliferation and cytotoxicity in oestrogen-receptor-positive breast cancer cells (MCF7) in vitro. Flax root extracts were prepared by using lignan extraction. The extracted compounds were analysed by Pyrolysis-Field Ionisation Mass Spectrometry. Various extract concentrations were applied to the cells to test for proliferation (BrdU test) and cytotoxicity (LDH test). A significantly higher inhibition of cell proliferation was observed with an extract made from 9-week-old flax roots in comparison with that of 3- and 6-week-old roots. Older roots contained more lignans and other phenolic substances than younger roots. The maturity grade of plants or their various parts is thus important for the production and concentration of secondary metabolites and leads to different biological effects on breast cancer cell growth.

关键词： Flax Root Stage of Maturity Lignans Breast Cancer MCF7

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

专题:对话艺术

东方艺术 2010年第21期 36-41页

作者： Monika szewczyk 杨洁（译）

当代艺术圈内外经常提及＂对话的＂或＂东拉西扯的＂这种词语,但我们却似乎并不乐意将对话称为一门＂艺术＂：也许这种消遣方式只属于17世纪那些闲散的贵妇和绅士,而无法和我们自身的愿望联系起来.

关键词：对话艺术艺术意义专题当代艺术 17世纪

The Impact of China's Adoption of New Accounting Standards on Analysts' Forecast Accuracy – an IFRS Study

在线全文

学校读者我要写书评

暂无评论

The Impact of China's Adoption of New Accounting Standards o...

《国际会计研究学刊》首届年会——国际财务报告准则趋同与采用：机遇和挑战

作者： Jing Lin Pervaiz Alam Wa Qar Ghani Samuel szewczyk St.Joseph’s University Kent State University Drexel University

From January 1,2007 all Chinese publicly-listed companies are mandated to apply the Accounting Standards for Business Enterprises(ASBE)which are substantially in line with International Financial Reporting Standards(IFRS).Examining the impact of this requirement,this paper focuses on the change in the errors of analysts’earnings forecasts before and after the switch for 151 publicly-traded companies in *** document that this mandatory adoption of ASBEs resulted,on average,in an increase in analysts’absolute forecast errors,i.e.,a decrease in forecast *** findings are contrary to early evidences of IFRS adoption in EU countries where an improvement in information environment is generally *** study contributes to the debate on the costs and benefits of IFRS adoption around the world.

关键词：

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

独白的交流与中断

东方艺术 2010年第21期 42-47页

作者： Monika szewczyk 杨洁

我们从已经或即将死亡的对话艺术中学到了什么?我们打算继续沿着博伊斯的野兔走过的路前行吗?这会不会是一场精心准备的葬礼?如果我们希望通过对话建立一些全新的东西,那么就需要陌生化我们关于对话的固有想法。去自然化——朝向"中立"... 详细信息

我们从已经或即将死亡的对话艺术中学到了什么?我们打算继续沿着博伊斯的野兔走过的路前行吗?这会不会是一场精心准备的葬礼?如果我们希望通过对话建立一些全新的东西,那么就需要陌生化我们关于对话的固有想法。去自然化——朝向"中立"——我们才有可能跳出所在的圈子,以神和动物、甚至通过假想一些难于理解的人的倾听来摆出问题,用以中断我们目前所称之为的"对话"。

关键词：对话艺术交流独白陌生化自然化

Allosteric inhibitors of plasma membrane Ca^(2+) pumps: Invention and applications of caloxins

在线全文

学校读者我要写书评

暂无评论

World Journal of Biological Chemistry 2011年第3期2卷 39-47页

作者： Jyoti Pande M szewczyk Ashok K Grover Department of Medicine HSC 4N41McMaster University1200 Main Street WestHamilton Ontario L8N 3Z5Canada Magdalena Ashok K Grover Department of BiologyHSC 4N41McMaster University1200 Main Street WestHamiltonOntario L8N 3Z5Canada

Plasma membrane Ca2+pumps(PMCA)play a major role in Ca2+homeostasis and signaling by extruding cellular Ca2+with high *** isoforms are encoded by four genes which are expressed differentially in various cell types in normal and disease ***, PMCA isoform selective inhibitors would aid in delineating their role in physiology and *** are testing the hypothesis that extracellular domains of PMCA can be used as allosteric targets to obtain a novel class of PMCA-specific inhibitors termed caloxins. This review presents the concepts behind the invention of caloxins and our progress in this area.A section is also devoted to the applications of caloxins in literature. We anticipate that isoform-selective caloxins will aid in understanding PMCA physiology in health and disease. With strategies to develop therapeutics from bioactive peptides,caloxins may become clinically useful in car diovascular diseases,neurological disorders,retinopathy,cancer and contraception.

关键词： Phage display Calcium signaling Plasma membrane Ca2+pumps Hypertension Neuronal disorders Contraception Cancer Thrombosis Lipid rafts