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Research on optimal immunization strategies for hepatitis B in different endemic areas in China

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World Journal of Gastroenterology 2000年第3期6卷 392-394页

作者： Li H Wang L Wang ss Gong J Zeng XJ Li RC Nong Y Huang YK Chen XR Huang ZN CAMS & PUMC Inst Basic Med Sci Dept Epidemiol Beijing 100005 Peoples R China

INtRODUCtION At present hepatitis B vaccine immunization is an unique effective measure for controlling hepatitis *** is important o determine optimal immunization

关键词： hepatitis B vaccine immunization strategy cost-benefit analysis china

Girl Power in Cashore＇s Graceling

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Journal of Literature and Art Studies 2014年第5期4卷 351-358页

作者： Suryo tri Saksono Syarifah, ss Universitas trunojoyo Madura Madura Indonesia

Girl Power in Cashore＇s Graceling is the title of this study. this study uses radical feminism as the theory, because the main character, Katsa, is the portrait of radical feminist. Katsa breaks the traditional gender roles and patriarchal ideology which dismiss and underestimate women as the inferior and subordinate from men dominance. Katsa as the main character is described as a woman who breaks the traditional gender roles by her extraordinary hobbies and capabilities, such as fighting, and killing. She also portrays radical-libertarian feminist who is showed by her principle and commitment on marriage, those are her refusal on marriage and her objection to have children.

关键词： feminist criticism radical feminism radical-libertarian feminist

氢化泼尼松-羟基丁酸酯-羟基戊酸酯共聚物纳米粒制备与性质

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药学学报 2002年第6期37卷 473-476页

作者：陈建海 Shagufta M Davis ss 第一军医大学南方医院药学部广东广州510515 Department of Pharmaceutical Science

目的　用新型生物可降解材料羟基丁酸酯羟基戊酸酯共聚物 (PHBV)为载体 ,以氢化泼尼松(prednisolone ,PNS)为模型药制备PNS PHBV纳米粒 (NP)。方法　用超声乳化法制备PNS PNBV纳米粒 ,激光粒度分析仪测试NP的粒径及其分布以及粒子表面... 详细信息

目的　用新型生物可降解材料羟基丁酸酯羟基戊酸酯共聚物 (PHBV)为载体 ,以氢化泼尼松(prednisolone ,PNS)为模型药制备PNS PHBV纳米粒 (NP)。方法　用超声乳化法制备PNS PNBV纳米粒 ,激光粒度分析仪测试NP的粒径及其分布以及粒子表面的Zeta电位。结果　NP的粒径为 5 0～ 2 5 0nm。随着药载比增加 ,NP的载药量也增大 ,但包封率与Zeta电位却明显下降 ;体外释药曲线表现出明显两相释药特征 ,伴随着不同程度突释效应 ,粒径越小突释效应越大 ,体外释药最长达 3 2h。结论　PNS PNBV纳米粒制备工艺稳定。

关键词：羟基丁酸酯-羟基戊酸酯共聚物氢化泼尼松缓释作用纳米粒制备工艺超声乳化法

Overview of recent land cover changes,forest harvest areas,and soil erosion trends in Nordic countries

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Geography and Sustainability 2021年第3期2卷 163-174页

作者： Na Zhou Xiangping Hu Ingvild Byskov Jan Sandstad Næss Qiaosheng Wu Wenwu Zhao Francesco Cherubini School of Economics and Management China University of GeosciencesWuhan 430074China Industrial Ecology Program Department of Energy and Process EngineeringNorwegian University of Science and TechnologyN-7491TrondheimNorway State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China

Mapping spatiotemporal land cover changes offers opportunities to better understand trends and drivers of envi-ronmental change and helps to identify more sustainable land management *** study investigates the spatiotemporal patterns of changes in land covers,forest harvest areas and soil erosion rates in Nordic countries,namely Norway,Sweden,Finland,and *** region is highly sensitive to environmental changes,as it is experiencing high levels of human pressure and among the highest rates of global *** analysis that uses consistent land cover dataset to quantify and compares the recent spatiotemporal changes in land cover in the Nordic countries is *** recent products issued by the European Space Agency and the Copernicus Climate Change Service framework provide the possibility to investigate the historical land cover changes from 1992 to 2018 at 300 m *** maps are then integrated with time series of forest harvest areas be-tween 2004 and 2018 to study if and how forest management is represented in land cover products,and with soil erosion data to explore status and recent trends in agricultural *** cover changes typically involved from 4%to 9%of the total area in each *** showed the strongest reduction(11,003 km^(2),−11%of the wetland area in 1992),followed by forest(8,607 km^(2),−1%)and sparse vegetation(5,695 km^(2),−7%),while agriculture(15,884 km^(2),16%)and settlement(3,582 km^(2),84%)showed net *** shrinkage dominated land cover changes in Norway(5,870 km^(2),−18%),followed by forest and grassland with a net gain of 3,441 km^(2)(3%)and 3,435 km^(2)(10%),*** Sweden,forest areas decreased 13,008 km^(2)(−4%),mainly due to agriculture expansion(9,211 km^(2),29%).In Finland,agricultural areas increased by 5,982 km^(2)(24%),and wetland decreased by 6,698 km^(2)(−22%).Settlement had the largest net growth in Denmark(717 km^(2),70%),mainly from conversion of agriculture land.S

关键词： Land cover changes Spatiotemporal analysis Forest management Soil erosion

Saving energy using synthetic lubricating oils: A case study

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Science China Mathematics 2001年第S1期44卷 156-162页

作者： KristiantφNDER terje N ■ss■N Norwegian University of Science and technology Dept.of Machine Design and Materials TechnologyRichard Birkelandsv.2BN-7491 TrondheimNorway Mobil Oil Norge DA Oslo.Norway

It has been suggested that the use of synthetic oil lubricant may lower the energylosses in large bearings. Such claims are often based on the interpretation of temperature meas-urements in the lubricant and/or bearings of heavily loaded rotating machinery. Lower tempera-tures have been observed in synthetic oils as compared to mineral ones even when the bearingsare operating at the same film thickness. this has been attributed to intrinsic lubricating propertiesof certain synthetic *** the present paper temperatures and film thicknesses in large bearings in a hydroelectricpower station were monitored and recorded simultaneously. the results for a synthetic lubricantand a mineral oil were compared. the temperature readings were indeed rather different - that ofthe synthetic oil was several degrees C lower than for the mineral oil. Both had been recom-mended for the actual application, giving virtually identical film shapes and thickness in the twocases.A study of the behaviour of the bearings and the temperature differences, based upon Rey-nolds’ equation and simple heat balance considerations, showed that the lower temperature of thesynthetic lubricant was caused by its higher heat capacity, but gave no indication of the existenceof a special lubricating property.

关键词： lubrication synthatic lubricants energy saving

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演变着的病毒:病毒的演化与病毒性疾病

国外医学（微生物学分册） 1991年第4期14卷 158-161页

作者： Morse ss 王韧

新病毒的形成决定于病毒的明显遗传适应性、宿主的遗传性及外界环境。疾病常随生态学改变而流行,此涉及动物宿主与传播媒介。应该组织世界性网络监测演变着的病毒,在新病毒的特性及亲缘关系研究中,推崇使用免疫吸印、核酸杂交、多聚酶... 详细信息

新病毒的形成决定于病毒的明显遗传适应性、宿主的遗传性及外界环境。疾病常随生态学改变而流行,此涉及动物宿主与传播媒介。应该组织世界性网络监测演变着的病毒,在新病毒的特性及亲缘关系研究中,推崇使用免疫吸印、核酸杂交、多聚酶链反应(PCR)等新技术。

关键词：传染病病毒演化

A Population Balance Model for Disperse Systems:Particle Size Distribution in Suspension Polymerization

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Chinese Journal of Chemical Engineering 1999年第4期7卷 332-344页

作者：陈中 Werner Pauer H.-U.Moritz Jan Prss Hans-Joachim Warnecke Chemical Engineering University of PaderbornPaderborn 33098Germany

On the basis of population balance a mathematical model is developed to describe the formation of polymer particle in styrene suspension polymerization. the characteristics of coalescence and breakage of droplets and the gel effect are analyzed in particular. Parameters of the models are estimated by experimental data on reaction conversion and particle size distribution. the results show that the model is suitable for predicting polymerization processes.

关键词： population balance model styrene suspension polymerization particle size distribution

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低功率激光疗法

国外医学（物理医学与康复学分册） 1992年第3期12卷 105-106页

作者： Kitchen ss 汪霞

低功率激光疗法(LLLt)已被研究和临床应用近20年。最早的工作开始于东欧和加拿大,但由于缺少方法学上的详细报告以及充足的证据,因而应慎重地加以解释。近3～4年来,科研工作者和临床工作者对LLLt 的兴趣有了实质性的增加。一、LLLt 的... 详细信息

低功率激光疗法(LLLt)已被研究和临床应用近20年。最早的工作开始于东欧和加拿大,但由于缺少方法学上的详细报告以及充足的证据,因而应慎重地加以解释。近3～4年来,科研工作者和临床工作者对LLLt 的兴趣有了实质性的增加。一、LLLt 的生理效应目前对LLLt 在整体组织上的生理效应尚难以解释和归纳,有二个原因:一是实验对象太分散,二是所用激光种类及剂量差异大,难于对不同研究结果进行比较。光辐射作用可以是光化学的,如紫外线辐射,也可以是热的,如红外线。

关键词：激光疗法低功率

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离散随机系统的包含原理

自动化学报 1997年第1期23卷 94-98页

作者：陈雪波 Stankovic'ss 鞍山钢铁学院自控系南斯拉夫贝尔格莱德大学

提出线性时变离散随机系统的包含原理．根据系统包含的定义，给出系统状态观测与反馈控制闭环系统的约束条件和聚集条件。

关键词：离散随机系统包含原理约束聚集大系统