维普中文期刊产品整合服务
129篇 您的检索式:作者名="K.G."
    题名 作者 年代 出处 被引量
1近40a凯拉库姆库区土地利用/覆盖变化及景观格局分析显示文摘为研究近40 a凯拉库姆库区土地利用/覆盖和景观格局时空变化状况,该文以凯拉库姆库区1975年Landsat MSS、1990年Landsat TM、2000年Landsat ETM+和2011年Landsat TM遥感影像为数据源,利用ENVI软件得到各时期的土地利用/覆盖类型转移矩阵,建立土地利用面积变化量、单一土地利用类型动态度以及区域土地利用综合动态度模型;同时,在景观格局分析中采用景观格局数量分析方法,在类型水平和景观水平分别选取不同的指数,系统分析凯拉库姆库区土地利用/覆盖和景观格局变化的时空特征。研究结果显示:近40 a凯拉库姆库区的土地利用/覆盖发生了剧烈变化,建设用地面积呈现出持续增加的态势,低覆盖度草地和未利用地的面积随时间序列呈'V'型变化,而水体、耕地、中覆盖度草地的面积随时间序列呈倒'V'型变化;建设用地和耕地大面积急剧扩张,并伴随着低覆盖度草地、中覆盖度草地和未利用地面积的减少,大量的中覆盖度草地、未利用地转化为耕地,同时部分耕地又转化为建设用地,使得建设用地和耕地面积显著增加,研究区区域土地利用综合动态度呈'V'字型变化,并有逐渐加快的趋势,活跃土地利用/覆盖类型由早期和中期的水体转化为近期低覆盖度草地,稳定土地利用/覆盖类型由早期的耕地和中覆盖度草地,过度到中期未利用地,进而转化为近期的耕地;景观格局分析表明,中覆盖度草地和耕地对整个景观发挥主导作用,与水体相邻的景观要素多,建设用地斑块数目多且相对分散,但有集中分布的趋势,在人类活动的影响下,整体斑块尺度趋于均匀,景观趋于丰富和复杂化,斑块聚集程度减少,破碎度增加。该研究结果为凯拉库姆库区水土地资源可持续开发和利用、生态环境保护提供科学依据。田锡文 王新军 K.G.卡迪罗夫 贾宏涛 2014农业工程学报2014,30,6:41
2双碱法用于烧结烟气脱硫中再生实验的研究显示文摘实验考察了影响双碱法再生过程的主要操作参数,包括搅拌速率、再生时间和pH值变化、反应温度、n(Ca(OH)2)/n(Na2SO3)等。使用XRD验证产物成分,用扫描电镜分析了再生CaSO3的形态。实验结果表明:Na2SO3浓度0.3和0.4 mol/L时,保持搅拌速率500 r/min、再生反应时间1 min、温度50℃能够取得最好的再生效果,一次再生后未反应的Ca(OH)2含量大约是34%;降低n(Ca(OH)2)/n(Na2SO3)能提高Ca(OH)2利用率。实验结果能够给再生系统的工程设计提供一定的指导。Mbango Mbida K.G. 宋存义 周向 2012环境工程2012,30,3:5
3CRYSTALLISATION KINETICS AND PHASE TRANSFORMATION BEHAVIOUR OF ELECTROLESS NICKEL-PHOSPHORUS DEPOSIT WITH 6-9wt% PHOSPHORUS CONTENT显示文摘Crystallisation kinetic and phase transformation behaviour of the electroless nickel-phosphorus deposit with 6-9wt% phosphorus content were studied. The deposit was heated in the differential scanning calorimetry (DSC) apparatus to 300℃-800℃ at 20℃/min, followed by the X-ray diffraction (XRD) analysis. The sequence of crystallisation process was: mixture of amorphous and microcrystalline nickel phases → intermediate metastable, f. c. c. nickel and stable N13P phases → f. c. c. nickel and stable Ni3P phases. Preferred orientation of nickel {200} plane was developed after the heating processes. Activation energy of crystallisation process was determined from the DSC analyses at 5-50℃/min. Crystallisation temperatures were found increased with increasing heating rate.K.G. Keong, W. Sha and S. Malinov (School of Civil Engineering, The Queen’s University of Belfast, Belfast BT7 1NN, UK) 2001Acta Metallurgica Sinica(English Letters)2001,14,6:4
4Complexation of the antibiotic tetracycline with humic acid显示文摘Cheng Gu K.G. Karthikeyan Samuel D. Sibley Joel A. Pedersen 2006Chemosphere2006,,8:2
5Opportunities for increased nitrogen-use efficiency from improved resource management in irrigated rice systems显示文摘K.G. Cassman S. Peng D.C. Olk J.K. Ladha W. Reichardt A. Dobermann U. Singh 1998Field Crops Research1998,,1:2
6Prevalence, perceived seriousness, justification and regulation of cyberloafing in Singapore显示文摘Vivien K.G. Lim Thompson S.H. Teo 2005Information & Management2005,,8:2
7Effects of zinc oxide and Enterococcus faecium SF68 dietary supplementation on the performance, intestinal microbiota and immune status of weaned piglets显示文摘L.J. Broom H.M. Miller K.G. Kerr J.S. Knapp 2005Research in Veterinary Science2005,,1:2
8Influence of grain refinement and modification on microstructure and mechanical properties of Al–7Si and Al–7Si–2.5Cu cast alloys显示文摘K.G. Basavakumar P.G. Mukunda M. Chakraborty 2007Materials Characterization2007,,3:2
9Wear of nano-structured carbide-free bainitic steels under dry rolling–sliding conditions显示文摘A. Leiro E. Vuorinen K.G. Sundin B. Prakash T. Sourmail V. Smanio F.G. Caballero C. Garcia-Mateo Roberto Elvira 2012Wear2012,,:2
10FN13762大鼠乳腺癌:首过灌注CT指数与组织学血管参数的区域对区域的相关性显示文摘目的采用区域对区域的相关方法研究FN13762大鼠乳腺癌的首过灌注CT指数与组织学血管参数的相关性。方法本研究经动物保护和应用委员会批准。FN13762大鼠乳腺癌细胞被移植到14只雌性Fischer344大鼠.并且行首过灌注CT检查。使用商业灌注软件可获得血流量、血容量、平均通过时间和表面通透性的CT灌注影像。在灌注影像上整个肿瘤被分成6个独立的区域,获得区域灌注指数量化值。在与灌注影像一致的组织学区域,测量组织学血管参数。包括微血管密度、血管数目、C.M. Park J.M. Goo H.J. Lee M.A Kim H.C. Kim K.G. Kim 何珍(译) 万业达(校) 2009国际医学放射学杂志2009,32,4:2
11Prefabrication of combined scapula flaps for microsurgical reconstruction in oro-maxillofacial defects: a new method显示文摘K.G. Vinzenz J. Holle E. Würinger K.-J. Kulenkampff 1996Journal of Cranio-Maxillofacial Surgery1996,,4:1
12Effects of parylene buffer layer on flexible substrate in organic light emitting diode显示文摘Y.S. Yoon H.Y. Park Y.C. Lim K.G. Choi K.C. Lee G.B. Park C.J. Lee D.G. Moon J.I. Han Y.B. Kim S.C. Nam 2006Thin Solid Films2006,,1:1
13Graphene oxide films as separators of polyaniline-based supercapacitors显示文摘Y.M. Shulga S.A. Baskakov V.A. Smirnov N.Y. Shulga K.G. Belay G.L. Gutsev 2014Journal of Power Sources2014,,:1
14Occurrence of antibiotics in wastewater treatment facilities in Wisconsin, USA显示文摘K.G. Karthikeyan Michael T. Meyer 2005Science of the Total Environment2005,,1:1
15Ozonolysate of excess sludge as a carbon source in an enhanced biological phosphorus removal for low strength wastewater显示文摘K.Y. Park J.W. Lee K.G. Song K.H. Ahn 2010Bioresource Technology2010,,3:1
16Adsorption of Pb(II) and Pb(II)-citric acid on sawdust activated carbon: Kinetic and equilibrium isotherm studies显示文摘K.G. Sreejalekshmi K. Anoop Krishnan T.S. Anirudhan 2008Journal of Hazardous Materials2008,,2:1
17JC virus induces altered patterns of cellular gene expression: Interferon-inducible genes as major transcriptional targets显示文摘Saguna Verma Katja Ziegler Praveen Ananthula Juliene K.G. Co Richard J. Frisque Richard Yanagihara Vivek R. Nerurkar 2005Virology2005,,2:1
18Multilineage Differentiation of Adult Human Bone Marrow Progenitor Cells Transduced with Human Papilloma Virus Type 16 E6/E7 Genes显示文摘A.M. Osyczka U. N?th J. O'Connor E.J. Caterson K. Yoon K.G. Danielson R.S. Tuan 2002Calcified Tissue International2002,,5:1
19Sequence analysis of Toll-like receptor genes 1–10 of goat ( Capra hircus )显示文摘A. Raja A.R. Vignesh B. Ann Mary K.G. Tirumurugaan G. Dhinakar Raj Ranjith Kataria B.P. Mishra K. Kumanan 2011Veterinary Immunology and Immunopathology2011,,3:1
20Comparison of scoring methods and thresholds of the General Health Questionnaire-12 with the Edinburgh Postnatal Depression Scale in English women显示文摘N.J. Shelton K.G. Herrick 2009Public Health2009,,12:1
返回顶部 每页显示:
共7页 首页 上一页 第1页 下一页 末页 /7 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费