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ChinAfrica 2020年第10期12卷 58-58页

作者： daniel Oloo 不详

Irecently took a tour of the beautiful Yunnan Province in southwest *** tour came at a time I had spent about six months in lockdown on campus due to the global pandemic,COVID-19 *** to Yunnan was *** allowed me to get acquainted with how the Chinese government is working to alleviate poverty there and I was able to explore the differences in Chinese ethnic groups.

关键词： China. southwest beautiful

Study of the Thermal Characteristics of a Geomaterial:Case of SavèGranites in the Republic of Benin

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Journal of Environmental Science and Engineering(A) 2023年第4期12卷 151-161页

作者： Koffi Judicaël Agbelele daniel Yemalin Agossou Kocouvi Agapi Houanou Bachir Kolade Adelakoun Ambelohoun Sakala Complice Decoursel Curtis Gérard Gbaguidi Aïsse Higher Normal School of Technical Education(ENSET) LokossaRepublic of Benin Laboratory of Materials and Structures(LAMS) Verechaguine AK Higher SchoolCotonouRepublic of Benin Laboratory of Energetics and Applied Mechanics(LEMA) EPAC UACAbomey-CalaviRepublic of Benin Civil Engineering Testing and Research Laboratory(L2EGC) ENSTPAbomeyRepublic of Benin

This work focuses on the valorization of local *** rock that is granite,a material used in construction thanks to its mechanical resistance,is the subject of our *** granite of the commune of Savè,made it possible to appreciate the thermal behavior of this rock studied with a view to its use as a building *** this end,a thermal diffusivity measurement test was carried out on this ***,we made samples which were then connected to a data acquisition box via thermocouples.A Python script is used to ensure the collection of temperature values over *** this thermal diffusivity test carried out on the granite taken from the Savèbreasts,we obtained an average diffusivity a=5.84×10^(-6)m^(2)/*** a result,the thermal effusivity and the heat capacity of the material were determined having respectively the value 1,351.09 J/(K·m^(2)·s^(1/2))and 547,945.21 J/(m^(3)·K).These different results highlight a thermal characterization of Savègranites as a relevant material in the design and construction of an energy-efficient eco-housing.

关键词： Local materials thermal diffusivity thermal conductivity thermal effusivity heat capacity

Most People Can＇t Live Without High-speed Internet

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英语画刊（高三·社会综合版） 2011年第4期 8-8页

作者： daniel Trotta

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用多属性变换由地震数据预测测井特性

勘探地球物理进展 2002年第3期25卷 65-78页

作者： daniel P Hampson 于宝利刘新利

描述了一种由地震数据预测测井特性的新方法。分析的数据由一系列与某个 3D地震数据体相连的井的目标测井曲线组成。从 3D地震数据体计算了一系列基于样点的属性 ,目标是要导出一个多属性变换 ,即属性的某个子集与目标测井值之间的线性... 详细信息

描述了一种由地震数据预测测井特性的新方法。分析的数据由一系列与某个 3D地震数据体相连的井的目标测井曲线组成。从 3D地震数据体计算了一系列基于样点的属性 ,目标是要导出一个多属性变换 ,即属性的某个子集与目标测井值之间的线性或者非线性变换。选定的子数据体是用向前逐步回归的方法确定的。传统交会图的扩展包括用褶积算子来消除目标测井曲线与地震数据之间的频率差异。在线性模式中 ,多属性变换方法要采用最小平方法计算一系列权值。在非线性模式中 ,则是用选定的属性为输入进行神经网络训练。对两种类型的神经网络 ,即多层前馈神经网络 (MLFN)和随机神经网络 (PNN)进行了评价。为了评价导出的多属性变换的可靠性 ,进行了交叉验证 ,即从训练数据体中按顺序每次剔除一口井 ,再由剩余的井重新导出这一变换 ,然后计算被隐去井的预测误差。该变换应用于地震数据体时 ,将合理误差 (所有被隐去井的平均误差 )用作为似然预测误差。该方法被用于两组实际数据。在每种情况下 ,当从单属性回归到线性多属性预测 ,再到神经网络预测过渡时 ,预测能力持续提高。这种改善不仅对训练数据的效果明显 ,对验证数据的效果也很明显。此外 ,神经网络法与线性回归法相比 ,分辨率也有明显的改善。

关键词：多属性变换地震数据预测测井特性地震属性多元线性回归神经网络褶积因子高分辨率

Residual Risk of Transmission of HIV and Hepatitis B and C by Blood Transfusion in Bukavu in the Democratic Republic of Congo

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Open Journal of Epidemiology 2014年第3期4卷 157-163页

作者： Jeff Maotela Kabinda André Nyandwe Bulabula Philippe Donnen Réné Fiasse Jeff Van den Ende daniel Sondag-Thull Dramaix-Wilmet Michèle Catholic University of Bukavu Bukavu Congo Provincial Blood Transfusion Centre of Bukavu Bukavu Congo

The aim of this study was to determine the incidence rates of HIV1/2 antibodies, HBV and HCV antibodies among voluntary blood donors and to estimate the residual risk of HIV, HBV and HCV infection among blood donors in Bukavu. We conducted a follow-up cohort study of volunteer blood donors who have made at least two blood donations in Bukavu (DRC) between January 2010 and December 2012. We recorded 2986 volunteer blood donors during the study period. The residual risk of viral transmission associated with the serological window was considered as equals to the incidence rate multiplied by the duration of the serological window period divided by 365. Seroprevalence in volunteer blood donors in Bukavu was 1.1% for HIV 1/2 antibodies, 4.0% for HBs Ag and 2.1% for hepatitis C antibody. The number of conversion between two blood donations (incident cases) were observed is 8, 12 and 37 donors respectively for HIV 1/2, HCV and hepatitis B between 2010 and 2012. Incidence rates reported for 1000 person-years were 11.0 for HIV, 51.7 for HBV and 17.1 for HCV. The residual risk as estimated from the window was 0.6 per 1000 donations or 1/1.515 donations for HIV, 3.1 per 1000 donations or 1/329 for HCV and 7.9 per 1000 donations or 1/126 donations for hepatitis B. The residual risk is high. The screening tests are not enough to ensure safe blood. The reduction of residual risk would be achieved through the effectiveness of preventive measures taken for transfusion chain, before and after the biological qualification of blood donation.

关键词： Residual Risk Hepatitis HIV Blood Donation

HARENA BEER PONG BAR AND RESTAURANT Boozy Americana Meets Guangzhou Sophistication

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城市漫步（GBA版） 2018年第6期 62-62页

作者： daniel Plafker 不详

Beer-pong,It's a pastime more often associated with the sticky frat house basements of North American college towns than the ritzy club scenes of major Chinese cities.

关键词： REST basement Guangzhou

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单反射器天线辐射的电磁场

系统工程与电子技术 1981年第8期 44-50页

作者： Gérard Dubost ,Bernard Lorig ,daniel Beguin ,冯卫平

由初级馈源照射的单个或多个金属反射器的天线,经常使用厘米波到毫米波波段。这种天线有很大的优点:性能高,制造简单,价格低廉及外形多样化。实际上这种天线包括一个或两个对称或非对称切割的反射器(卡塞格伦天线),横向辐射(喇叭天线)... 详细信息

由初级馈源照射的单个或多个金属反射器的天线,经常使用厘米波到毫米波波段。这种天线有很大的优点:性能高,制造简单,价格低廉及外形多样化。实际上这种天线包括一个或两个对称或非对称切割的反射器(卡塞格伦天线),横向辐射(喇叭天线)或纵向辐射(介质天线)的初级馈源等等。本文旨在陈述计算反射器天线和初级馈源辐射场所使用的方法,并列举在某些情况下所取得的结果。

关键词：抛物面反射器馈源辐射场反射器天线孔径辐射电磁场电磁学

CARDIOVASCULAR DISEASE What You Need to Know About It

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城市漫步（上海版、英文） 2017年第2期 57-57页

作者： daniel Meng 不详

Cardiovascular disease(CVD)is the direct result of atheroscler osis,a condition where abnormally high levels of cholesterol in the bloodstream have led to the formation of plaque in the *** plaque growth,if left unabated,could impair blood flow and lead to coronary heart disease,cerebrovascular disease and peripheral arterial disease that can ultimately result in a heart attack or stroke.

关键词： cholesterol coronary arteries

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A Defining Moment?

Beijing Review 2009年第38期52卷 15-15页

作者： daniel IKENSON

White House’s decision to impose prohibitive tariffs on Chinese tires puts Sino-U.S. relations to the test Despite all of the stress points, both real and imagined, Sino-U.S. trade relations have held up remarkably w... 详细信息

关键词： WTO A Defining Moment

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Boss Joke

海外英语 2014年第4期 34-34页

作者： daniel Coutoune