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Demography and dynamics of mountain nyala Tragelaphus buxtoni in the Bale Mountains National Park,Ethiopia

Current Zoology 2010年第6期56卷 660-669页

作者： Yosef MAMO Michelle a.pinard Afework BEKELE Hawassa University Department of Wildlife and Eco-tourism University of Aberdeen Institute of Biological and Environmental Sciences Addis Ababa University Department of Biology

We studied the population dynamics of endangered mountain nyala Tragelaphus buxtoni between 2003-2005 in theBale Mountains National Park. Line-transect sampling and total count methods were used to gather data on demographics andmovement patterns. The population's age-group composition was 58% adults, 25% sub-adults, 9% juveniles, 5% calves and 3%unidentified with a female-male sex ratio of 2:1. Population density was found to be significantly different between the twosub-populations (Dinsho Sanctuary and Gaysay/Adelay). A significant difference was found for age-group composition across thetwo sub-populations except adult females, sub-adult males and calves. The Dinsho sub-population was an isolated group. Separationand containment of the mountain nyala population could have negatively affected their ability to search for habitat requirementsand mates from distant areas. The population varied between 830-908 individuals (95% CI), a reduction of 45% from earlierreports. However, the mean population density increased due to contraction of the species' habitat range. We observed a populationdecrease of 2%-5% per year over the course of our study. Many of the assessed demographic parameters did not significantly changeover the three years. This suggests that the decrease in nyala population was not due to random variations in reproduction. Anthropogenicfactors such as competition with livestock for forage, habitat encroachment and poaching by the local people might have beenpartly responsible for the depleted population in our study

关键词：人口动态国家公园埃塞俄比亚山区未成年人人口密度栖息地流动形态

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蓄热室热工性能的计算软件

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玻璃 2003年第5期30卷 51-54页

作者： F.Pomar Y.BoussantRoux a.pinard F.Martin 陈恭源不详 SEPR.B.P.25 84131LePontetcedex BSNEMBALLAGE.B.P.1228 69611Villeurbanneeedex BSNVidrioEspania Apartadodecorreos194PiadelaBrugueras／n08211CastelarDelVallesEspagne

1前言西普公司自1973年发明十字形格子砖以来,从未停止过改善蓄热室热工效率方面的研究和开发工作.考虑到玻璃熔窑的运行成本和比以往任何时代更注重的环境保护,研究出了一套可靠性好和效率高的蓄热室格子体方案.

关键词：玻璃熔窑蓄热室热工性能计算软件格子体

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Study of Construction Techniques and Hygro-Thermal Behavior of a Vernacular Earth Building in a Humid Tropical Climate

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Journal of Building Construction and Planning Research 2023年第3期11卷 69-85页

作者： Mouhamadou Nabi Kane Mapathe Ndiaye Emilie pinard University College of Architecture Dakar (CUAD) University of Thies Thies Senegal Laboratory of Mechanics and Modeling University of Thies Thies Senegal McEwen School of Architecture Laurentian University Sudbury Canada

This study analyzes the know-how of local communities, to draw on techniques that make contemporary buildings more energy efficient. The impluvium hut in the locality of Enampore, Casamance, Southern Senegal, served as the object of study. The hut, including several rooms, is entirely built with earthen walls, earthen floor, earthen ceiling, covered by a double straw roof and its central courtyard. A room noted (L) and a semi-opened living space were chosen as spaces for hygro-thermal experimentation. The hottest average temperature obtained respectively in the room (L) and in the living space is 25.5˚C and 27˚C when outside is about 34˚C. The thermal amplitude inside room (L) is 0.88˚C, in semi-opened living space, is 2.6˚C and outside is 9.5˚C. With these results we can say that room (L) undergoes very low temperature variations and that there is no need to air-condition in the enclosure. The thermal amplitude makes it possible to see the influence of the earthen walls on the interior temperature and its regularity compared to the fluctuation of the external temperature. The thermal inertia of the building walls was characterized using also the time lag and the decrement factor. They was respectively 7.0 H and 0.093 for the room (L). With this result we can say that this material has a high thermal inertia. For humidity, it is high around 78.5% in the room (L), 66.0% at the semi-open living room, when it is 59.0% outside. Through this study, it is possible that the revalorization of vernacular architecture can be an alternative to reduce the energy consumption of buildings.

关键词： Time Lag Decrement Factor Thermal Inertia Double Skin Impluvium

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A Proposed Framework for Optimised Utilisation of Materials for Low Volume Roads Using the Dynamic Cone Penetrometer

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Journal of Transportation Technologies 2021年第1期11卷 14-36页

作者： Michael pinard Philip Paige-Green Jon Hongve Estime Mukandila Infra Africa Consultants Gaborone Botswana Department of Civil Engineering Tshwane University of Technology Pretoria South Africa Independent Consultant Tjome Norway Real Baobab (Pty) Ltd Pretoria South Africa

In order to minimise the cost of constructing low volume roads (LVRs), it is essential that optimum use is made of locally available, naturally occurring materials. However, conflicts often arise between material acceptability, as defined by conventional test methods and specifications, and material suitability in terms of actual engineering performance as a “fit-for-purpose” road construction material. To avoid such conflicts, it is crucial to adopt appropriate test methods and specifications for selecting construction materials. This paper presents a materials evaluation framework for optimizing the utilisation of materials in LVR pavements based on the use of the Dynamic Cone Penetrometer (DCP). This approach enables materials to be selected on the basis of their “fitness-for-purpose”. It avoids suitable materials from being rejected based on one or other of the traditionally specified parameters not being complied with, even though their strength, as measured by the DCP penetration rate (DN value in mm/blow) of the soil, may be adequate. Investigations of the properties of a wide range of locally available materials that have been used successfully in the construction of LVRs have confirmed the validity of the materials evaluation framework.

关键词： Low Volume Roads Dynamic Cone Penetrometer Materials Fit-for-Purpose

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高能量冲击压路机革新压实技术及在公路和机场施工中的应用

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机场工程 2002年第2期 60-67页

作者：万希存 MichaelI.pinard 等北京军区空军勘察设计所

21世纪的交通需求，特别表现在公路路面和机场道面的交通量和荷载的持续增长，使得20世纪的常规施工技术难以与之相适应。导致了一种全新的路面压实机具即冲击压路机的开发成功。冲击压路机的设计是基于高能量冲击压实的思想。冲击压实... 详细信息

21世纪的交通需求，特别表现在公路路面和机场道面的交通量和荷载的持续增长，使得20世纪的常规施工技术难以与之相适应。导致了一种全新的路面压实机具即冲击压路机的开发成功。冲击压路机的设计是基于高能量冲击压实的思想。冲击压实技术提供了全新的、开创性的、经济的压实技术，广泛应用于那些在创造性和经济性上具有挑战意义的工程。本文阐述了高能量冲击压实的原理和冲击压路机的性能。论述了冲击压路机在香港赤腊角机场的应用，以现场土基的工程特性参数的直接测量为基础，提出了合适的检测和控制压实质量的方法，最终克服了常规的检测和控制方法的缺陷。本文介绍的技术在华北某机场道基工程中获得应用，成功地处理了道基土的高压缩性问题，取得了良好的效果，现将此文译出供同行们参考。

关键词：公路机场施工冲击压路机路基压实

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大电流空气开关操作后材料微观结构的变化

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电工合金文集 1991年第2期 39-48页

作者： J.Ambier J.pinard 程礼椿

由于电弧效应,触头材料表层遭受极其严重的热作用,使表层材料的微观结构改变。触头的电气性能取决于材料的表面结构,因而有必要知道表层结构重新改组的机理。触头断面和表面龟裂区域用扫描电镜检查。模拟低压断路器的工作状况,在一套试... 详细信息

由于电弧效应,触头材料表层遭受极其严重的热作用,使表层材料的微观结构改变。触头的电气性能取决于材料的表面结构,因而有必要知道表层结构重新改组的机理。触头断面和表面龟裂区域用扫描电镜检查。模拟低压断路器的工作状况,在一套试验设备上对AgZnO、AgC、AgNi、AgSnO_2和AgCdO作了大电流(2000 A)分断试验。本文主要是讨论AgZnO材料。在单分2000 A或AC4型电寿命试验以后,我们即可探知材料的结构。同时,我们还能通过激光熔化或炉中熔化模拟电弧对表层的热作用,以便再现这个过程。利用这些试验结果,联系到材料的成分、粒度和物理、化学性能,我们便能解释材料结构的改变。这样,AgZnO的电气特性便可得到更好地了解。

关键词：大电流空气开关触头材料

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Performance of Single Crystals House-of-Cards-like ZSM-5 in Ethanol-to-Hydrocarbons Conversion

Performance of Single Crystals House-of-Cards-like ZSM-5 in ...

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中国化学会第十九届全国催化学术会议

作者： Zhengxing Qin Ludovic pinard Mohammed Amine Benghalem T.Jean Daou Georgian Melinte Ovidiu Ersen Shunsuke Asahina Jean-Pierre Gilson Valentin Valtchev China University of Petroleum (East China) Jilin University

The present study reports the unbiased NHF etching of a parent(Z) ZSM-5 zeolite resulting in houseof-cards-like single crystals(Z) containing large rectangular cavities surrounded by thin(15 – 30 nm), flat and highly... 详细信息

关键词： Zeolite House-of-cards-like NH4F etching Catalysis

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