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| 1 | 基于遥感影像的甘达基流域博卡拉和巴拉普尔的土地利用变化及其驱动力研究(英文)显示文摘城市扩张是反映经济增长的重要指标,但随意的城市扩张也带来了严重的社会经济问题、环境问题以及城市土地管理问题。在这个背景下,理解城市扩张的过程对于指导城市的可持续增长具有重要意义。本研究采用基于遥感影像的监督分类方法,分析了甘达基流域内的两个大城市—博卡拉和巴拉普尔1990–2018年的城市用地变化。结果表明:在过去的28年,博卡拉和巴拉普尔的城市面积分别显著扩张了300%和近500%。人口增长、城市基础设施和便利的生活方式引起周边地区向城市的人口迁移,是造成本研究区城市扩张的主要原因。除此之外,不断变化的城市定义和城市边界的扩张是造成城市快速扩张的关键因素。由于上述两个城市拥有高水平的商业活动以及现代化的设施,未来城市规模可能继续扩大。应当通过城市规划和政策减少随意的城市扩张,从而实现城市的可持续发展。 | Raju RAI 张镱锂 Basanta PAUDEL Narendra Raj KHANAL Bipin Kumar ACHARYA | 2020 | Journal of Resources and Ecology2020，11，1： | 3 |
| 2 | Use of the Max Ent model to predict changes in sloth bear(Melursus ursinus)habitats in the Gandaki River Basin,Nepal显示文摘The Gandaki River Basin(GRB),located in the central Himalaya,provides habitats for a large number of important flora and fauna species.The habitats of key protected species have changed over time as a result of climate changes and human activities related to land use change,including the development of roads.This study assessed the present and future distributions of sloth bear(Melursus ursinus)habitats using the maximum entropy(Max Ent)model.Bioclimatic data,a digital elevation model and roads were used as environmental layers to assess current and future distributions of habitat.Results show that the overall habitat within the study area is likely to undergo important changes in the future.Bio 8(the mean temperature of the wettest quarter)and slope were found to be important variables affecting the distribution of the species.The habitats very highly suitable for sloth bears currently cover an area of 148 km^(2) within the GRB.These habitats are predicted to increase by 122 km^(2) more by 2050.Overall,a net change by 680.38 km^(2) was found in the GRB.Conservation measures are necessary for this key protected species and its habitat within the GRB and elsewhere in Nepal. | Raju RAI ZHANG Yi-li WANG Zhao-feng Basanta PAUDEL LIU Lin-shan Mohan Kumar RAI Narendra Raj KHANAL | 2022 | Journal of Mountain Science2022，19，7： | 1 |
| 3 | Metallurgical slag as a component in blended cement 显示文摘 | Rai A Prabakar J Raju C B | 2002 | Construction and Building Materials2002，16，8： | 1 |
| 4 | Influence of feed- ing acacia nilotica pods on intake, nutrient utilization and immune status in pregnant goats显示文摘 | Kushwaha Raju Rai S N Singh A K | 2012 | Indian Jour- nal of Animal Research o2012，46，1： | 1 |
| 5 | A study of nonisothermal tem- pering kinetics in plain 9Crl Mo steel显示文摘 | GANESH B J RAJU S RAI A K | 2011 | Transactions of the Indi- an Institute of Metals2011，64，12： | 1 |
| 6 | 喜马拉雅中部甘达基河流域尼泊尔国鸟(棕尾虹雉)生境分布变化显示文摘甘达基河流域(Gandaki River Basin,GRB)是喜马拉雅中部地区的一部分,该地区栖息着许多珍稀的野生动物。由于气候和人类活动的影响,许多珍稀保护物种的生境处于危险之中。本研究基于最大熵(MaxEnt)模型,运用生物气候、土地覆被和DEM数据,分析各环境要素对棕尾虹雉(Lophophorusimpejanus)的生境适宜性的影响,评估棕尾虹雉现在状况和未来栖息地分布的变化。研究表明,目前棕尾虹雉的高度适宜栖息地面积约为749 km^2,主要分布在流域北部、东部和西部,尤其是郎塘国家公园、马纳斯卢峰自然保护区和安纳布尔纳峰自然保护区等保护区内。到2050年,棕尾虹雉的高度适宜栖息地面积将减少至561 km^2,主要在流域北部和西北部(即Chhyo,Tatopani,Humde和Chame地区)。未来环境变化的模拟表明,由于适宜栖息地面积的减少,棕尾虹雉面临的生存风险将增加。 | Raju RAI Basanta PAUDEL 谷昌军 Narendra Raj KHANAL | 2020 | Journal of Resources and Ecology2020，11，2： | 1 |
| 7 | Metallurgical slag as a component in blended cement显示文摘 | RAI A PRABAKAR J RAJU C B | 2002 | Construction and Building Materials2002，16，8： | 1 |
| 8 | Metallurgical slag as a component in blended cement显示文摘 | Amit Rai Prabakar J Raju C B | 2002 | Construction and Building Materials2002，，16： | 1 |
| 9 | 跨境流域管理的区域科技合作国际研讨会在第33届国际地理大会分会场召开(英文)显示文摘The 33rd International Geographical Congress(IGC)was held successfully in Beijing,China on August 21-25,2016,with the motto'Shaping Our Harmonious Worlds'.A joint session entitled'Regional Science Collaboration on Transboundary River Basin Management'was also | Raju Rai Wang Zhaofeng | 2016 | Journal of Geographical Sciences2016，26，11： | 0 |
| 10 | 气候变化对喜马拉雅中部甘达基河流域濒危物种的影响预测显示文摘甘达基河流域位于喜马拉雅山脉中部,是众多濒危野生物种的重要栖息地。然而气候变化使该流域的生态环境变得愈发脆弱。本研究利用最大熵物种分布模型(Max Ent)评估气候变化对喜马拉雅黑熊(Ursus thibetanus laniger)和印度花豹(Panthera pardus fusca)等濒危物种空间分布变化的潜在影响。研究基于物种出没地点、生物气候和地形(海拔、坡度和坡向)等数据拟合模拟并预测物种在目前与未来的潜在分布情况。研究结果显示,目前喜马拉雅黑熊的高度适宜区面积约为1642 km^(2),占流域面积的5.01%,预计至2050年,其高度适宜区面积在甘达基河流域内将会增加约51 km^(2);印度花豹的高度适宜区面积约为3999 km^(2),占流域面积的12.19%,预计至2050年可能会增加到4806 km^(2)。喜马拉雅黑熊的栖息地面积可能会在研究区域的东部(伯塞里、塔托潘尼和班塞以北)增加,而在东部(颂当、切坎帕)、西部(布尔提邦和波邦)和北部(桑波切、玛南、切坎帕)减少;印度花豹的栖息地面积则将在研究区域东南部(班塞)、西部部分地区(赫里乔尔和桑迪哈克北部)和西北部(桑波切)增加,而在研究区域的东部、南部和其他西部地区减少。研究同时指出,海拔、Bio 15(季节性降水变化)和Bio 16(最湿润季度降水量)等环境因素对喜马拉雅黑熊的栖息地变化影响较大,而Bio 13(最湿润月降水量)和Bio 15(季节性降水变化)对印度花豹的栖息地变化影响较大。总之,这两个物种的栖息地在不同海拔下均会受到气候变化的影响,需要加强对该区域内濒危物种的保护力度。 | Raju RAI 张镱锂 刘林山 Paras Bikram SINGH Basanta PAUDEL Bipin Kumar ACHARYA Narendra Raj KHANAL | 2022 | Journal of Resources and Ecology2022，13，2： | 0 |
| 11 | IMPEDANCE AND MODULUS SPECTROSCOPY CHARACTERIZATION OF SODIUM-BISMUTH TITANATE-BASED LEAD-FREE FERROELECTRIC MATERIALS显示文摘In this paper,we present impedance spectroscopy of Sodium Bismuth Titanate-based materials belonging to(1-x)TNa_(1/2)Bi_(1/2)TiO_(3)-xBaTiO_(3)(x=0.04)(NBT-BT)system.NBT-BT ceramics are prepared by high temperature solid-state reaction method.X-ray diffraction technique showed single-phase polycrystalline sample with an ABO3 perovskite structure.Dielectric behavior and the impedance relaxation were investigated in a wide range of temperature(room temperature(RT)-500℃)and frequency(1 kHz-1 MHz).A broad dielectric constant peak was observed over a wide temperature range around the phase transition temperature.The complex impedance plot exhibited one impedance semicircle identified over the frequency range of 1 kHz-1MHz,which is explained by the grain effect of the bulk.The centers of the impedance semicircles lie below the real axis,which indicates that the impedance response is a Cole-Cole type relaxation. | DHANANJAY K.SHARMA RAJU KUMAR RADHESHYAM RAI SEEMA SHARMA ANDREI L.KHOLKIN | 2012 | Journal of Advanced Dielectrics2012，2，1： | 0 |
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