检索结果-南通市图书馆

Estimation of Hydraulic Conductivity of Soils at a Watershed-Scale Using Porchet’s Method: Application in the Olezoa Waterhed, Yaounde, Cameroon

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International Journal of Geosciences 2016年第3期7卷 397-408页

作者： André Firmin bon Auguste Ombolo Guillaume Ewodo Mboudou Jules Rémy Ndam Ngoupayou Georges Emmanuel Ekodeck Department of Climatology Hydrology and Soil Science Higher Institute of the Sahel University of Maroua Maroua Cameroon Department of Earth Sciences Faculty of Science University of Yaounde I Yaounde Cameroon Department of Hydraulics and Water Control Higher Institute of the Sahel University of Maroua Maroua Cameroon

Contamination analysis of the unsaturated zone requires information on the spatial variability of hydraulic conductivity. Two types of hydraulic tests (variable and constant charge) were identified to estimate the spatial variability of the hydraulic conductivity of the surface portion of the unsaturated zone in the Olezoa watershed. These tests were performed on 100 holes at depths ranging between 50 and 90 cm, spread throughout the watershed. The hydraulic conductivity values obtained at 50 and 90 cm are close to the absolute value for each method. However, they show a difference of 10-1 m/s between the two types of test regardless of the depth of investigation. The representation of data in the graph indicates a staircase quartile distribution for the variable charge test. The test at constant charge, rather presents a log normal distribution which is also supported by the Kolmogorov-Smirnov test. Hydraulic conductivities have a random component and a spatial organization which results from soil and/or morphological factors. This organization thus permits the distinction of zones which could show high pollution risk.

关键词： Unsaturated Zone Quartile Graphs Hydraulic Conductivity Olezoa

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High resolution nuclear magnetic resonance investigation of metabolic disturbances induced by focal traumatic brain injury in a rat model:a pilot study

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Journal of Biomedical Science and Engineering 2011年第2期4卷 110-118页

作者： laurent lemaire Francois Seguin Florence Franconi Delphine bon Anne Pasco Nadege Boildieu Jean-Jacques le Jeune lUNAM Universite Ingenierie de la Vectorisation ParticulaireAngersFrance INSERM U646 AngersFrance Universite de Poitiers Ischemie Reperfusion en Transplantation renalePoitiersFrance INSERM U927 PoitiersFrance lUNAM Universite PIAMAngersFrance

Experimental models of traumatic brain injury (TBI) provide a useful tool for understanding the cerebral metabolic changes induced by this pathological condition. Here, we report on the time course of changes in cerebral metabolites after TBI using high-resolution proton magnetic resonance spectroscopy (NMR). Extracts from adult male Sprague-Dawley rats were subjected to fluid lateral percussion and were then examined by NMR at 3, 24 and 48 h after the injury. A metabolomic approach was carried out to identify the cerebral metabolites impacted by the TBI and their quantitative temporal changes. lactate, valine and ascorbate were the three first metabolites to be significantly modified after TBI. The quantitative elevation for these compounds last for the entire experimental time explored. Within 24 hours post-TBI, a significant elevation in choline-derivates, alanine and glucose were also measured. On the other hand, N-acetyl aspartate, a neuronal marker, and myo- inositol, an important organic osmolyte in the mammalian brain, were not significantly impacted in the chronic phase of TBI.

关键词： TBI 1H-NMR Spectroscopy Metabolomic Traumatic Brain

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儿童图书馆的空间设计

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2014年

作者： (bon Ingrid)邦 (Cranfield Andrew)克兰菲尔德 (latimer Karen)拉蒂梅尔

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向ITIl看齐

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中国经济和信息化 2008年第Z2期 43-46页

作者： Jan van bon 章斌

基于IT基础设施,ITIl为IT部门的所有活动提供了一个通用框架。

关键词： ITIl 所有最佳实践服务级别管理参考框架可用性管理服务交付

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Region-based Intensity Correction in 3D Stereoscopic Images

Region-based Intensity Correction in 3D Stereoscopic Images

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2010 International Conference on Test and Measurement (ICTM2010)

作者： Sang-Hyun Kim Gil-Ja So Jeong-Yeop Kim bon-Geon Ku Department of Game Contents University of 99 Pilbong-gil Haeundae-Gu Busan612-743Korea Digital Contents Research Center University of 99 Pilbong-gil Haeundae-Gu Busan612-743Korea

In this paper,we propose a method for intensity correction using Segmentation in 3D stereoscopic *** the proposed method,3D stereoscopic right images are binary using threshold and region *** regions are *** each region in right image,a corresponding region in left image is decided through region matching using correlation *** intensity correction in left and right image can be performed through histogram specification between the corresponding regions.

关键词： 3D stereoscopic images Region segmentation Histogram specification Intensity correction

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Dosimetry of the Photo Neutron Produced in Medical linear Accelerators

Dosimetry of the Photo Neutron Produced in Medical Linear Ac...

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The Second Asian and Oceanic Congress for radiation Protection

作者： bon Cheol KOO Hong Suk KIM Jae-Seong lEE Chan Woo JEONG Korea Institute of Nuclear Safety Daejeon Republic of Korea Korea Institute of Nuclear Safety Daejeon Republic of Korea Korea Institute of Nuclear Safety Daejeon Republic of Korea Korea Institute of Nuclear Safety Daejeon Republic of Korea

Currently, medical linear accelerators （lINACs） are the most common method of radiotherapy for tumor treatments and more than 90 lINACs are installed and operated in Korea in 2005. To increase the treatment efficiency, lINACs are trending toward higher energy（more than 15MV） nowadays. Meanwhile, the increased photon energy above about 8MV can produce undesired photo neutrons through photonuclear reaction between photon and surrounding materials in lINAC. In this study, the neutron generation and flux around the head geometry of a Varian Clinac 2100C lINAC has been simulated by a Monte Carlo calculation to evaluate photo neutron dose. Monte Carlo calculation using the MCNPX code has been performed for two different photons （generated from Varian 10MV, Varian 15MV） for three different field sizes （0ì 0 cm2, 10ì 10 cm2,20ì 20 cm2）. To compare with the calculation results, additional experimental measurements have been conducted by bubbledetectors on neutron dose and neutron energy spectrum.

关键词： Photo Neutrons linear Accelerators Bubble Detectors

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血库

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疯狂英语（阅读版） 2013年第8期 34-35页

作者： bon Iver 金茨

我在血库遇见你/我们看着那些包袋/好奇是否所有颜色/都匹配于那些标签上我们所熟知的任何名字你说“看，看这里，那是你的!/与你兄弟的一起堆在上面/看．它们彼此何其相似啊/即使被那些塑料小瓶盖封住”

关键词：英语教学教学方法阅读教学课外阅读

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政治心理

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作者： (法)勒朋(G. le bon)

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因为我们可以

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疯狂英语（初中天地） 2013年第5期 4-5页

作者： bon Jovi 鱼又

我才不想作沧海中的另一波海浪我是一块磐石，可不只是另一粒散沙（没错）当你需要一个肩膀，我要成为你的依靠我不是一名战士。

关键词：中学英语课外阅读阅读材料

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Key rheological properties of hyaluronic acid fillers:from tissue integration to product degradation

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Plastic and Aesthetic Research 2018年第5期5卷 1-8页

作者： Samuel Gavard Molliard Jérémie bon Bétemps Basste Hadjab David Topchian Patrick Micheels Denis Salomon Research and Development Department Kylane Laboratoires S.A.Plan-les-Ouates 1228Switzerland Dr.David&Associates Private Practice Armadale VIC 3143Australia Dr.Patrick Micheels Private Practice Genève 1206Switzerland Clinique Internationale de Dermatologie Genève S.A.Private Practice Genève 1201Switzerland

Aim: Over the last 15 years, hyaluronic acid (HA) fillers have become the most popular injectable biomaterial for soft tissue correction. With the increasing number of available HA fillers and the multiplication of facial treatments all over the world, there has been a need from physicians to better understand the HA fillers science. There is especially a growing interest in the science-based evaluation of rheological characteristics which represents an essential tool to guide physicians in the selection of the most appropriate HA fillers, administration techniques and depths of injection for their clinical applications. Methods: Four key rheological parameters (viscosity η, elasticity G', normal force FN and elasticity E') are measured and discussed on five HA fillers. Results: These four key rheological parameters are demonstrated to play a pivotal role, in combination with the cohesivity, for better predicting the clinical behavior of HA fillers at different stages of their lifetime. Conclusion: This article discusses the importance of four key rheological parameters during the main steps of the clinical HA fillers' lifetime, from the product injection to the loss of clinical effects. A better knowledge of these HA fillers' rheological parameters can help the physicians to optimize their aesthetic outcomes, safety and patient satisfaction.

关键词： Hyaluronic acid fillers rheological properties product lifetime tissue integration clinical effects

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