维普中文期刊产品整合服务
82篇 您的检索式:作者名="O. A"
    题名 作者 年代 出处 被引量
1Water Yield and Sediment Yield Simulations for Teba Catchment in Spain Using SWRRB Model: Ⅰ. Model Input and Simulation Experiment显示文摘Water yield and sediment yield in the Teba catchment, Spain, were simulated using SWRRB (Simulator for Water Resources in Rural Basins) model. The model is composed of 198 mathematical equations. About 120 items (variables) were input for the simulation, including meteorological and climatic factors, hydrologic factors, topographic factors, parent materials, soils, vegetation, human activities, etc. The simulated results involved surface runoff, subsurface runoff, sediment, peak flow, evapotranspiration, soil water, total biomass, etc. Careful and thorough input data preparation and repeated simulation experiments are the key to get the accurate results. In this work the simulation accuracy for annual water yield prediction reached to 83.68%.ZENG ZHIYUAN and A. M. J. MEIJERINK Collage of Geography, Nanjing Normal University, Nanjing 210097 (China) International Institute for Aerospace Survey and Earth Sciences, P. O. Box 6, 7500A A Enschede (the Netherlands) 2002Pedosphere2002,12,1:6
2Effect of Anions on Adsorbability and Extractability of Lead Added in Soil显示文摘The effect of accompanying anions on the adsorbability and extractability of Pb added in soils was studied by using bach equilibria and incubation-extraction mothods.Pb concentration ranged between 0.48-2.41 mM in the adsorption experiment,and Pb added to soil from 2.14 to 19.31mM Pb/kg with an incubation time of 2-16 weeks in the incubation-extraction test in which 1M NH4OAc(pH 7) was taken as an extraction agent,and the Pb compounds used are PbCl2,Pb(NO3)2 and Pb(OAc)2.The values of pH50 for Pb retention and the parameters,b and k values,of Langmuir equation were used to distinguish the difference of adsorbability and extractability of Pb affected by anions,respectively.Judging from the results of either pH50 value or b value,the influences of Cl^- and NO3^- on the adsorbability and extractability of Pb in soils were similar but quite different from those of OAc^-.The relative loading capacities of soils to Pb calculated according to the extraction rate showed that the values of Pb(OAc)2 were higher than those of PbCl2 and Pb(NO3)2.CHEN HUAI-MAN, ZHENG CHUN-RONG and SUN XIAO-HUALaboratory of Material Cycling in Pedosphere, ’Institute of Soil Science, A cademia Sinica, P. O. Box 821, Nanjing (China) 1991Pedosphere1991,1,1:6
3Water Yield and Sediment Yield Simulations for Teba Catchment in Spain Using SWRRB Model: Ⅱ. Simulation Results显示文摘Simulated results of water yield, sediment yield, surface runoff, subsurface runoff, peak flow, evapo-transpiration, etc., in the Teba catchment, Spain, using SWRRB (Simulator for Water Resources in Rural Basins) model are presented and the related problems are discussed. The results showed that water yield and sediment yield could be satisfactorily simulated using SWRRB model. The accuracy of the annual water yield simulation in the Teba catchment was up to 83.68%, which implied that this method could be effectively used to predict the annual or inter-annual water yield and to realize the quantification of geographic elements and processes of a river basin.ZENG ZHIYUAN and A. M. J. MEIJERINK Collage of Geography, Nanjing Normal University, Nanjing 210097 (China) International Institute for Aerospace Survey and Earth Sciences, P. O. Box 6, 7500A A Enschede (the Netherlands) 2002Pedosphere2002,12,1:4
4A Preliminary Global Analysis of Remotely Sensed Radiation Characteristics of Ground Features:Ⅱ. Result Discussion显示文摘Based on the L,B and V statistics of the 106 ground feature groups or the 769 ground feature class units in the world presented in the part I of the paper,the distribution of the world ground features on the axes of L,B and V,in the planes of L-B,L-V and B-V and in the space of L-B-V was discussed.And the typical numerical characteristics of the various ground features were also summarized.ZENG ZHI-YUANInstitute of Soil Science, A cademia Sinica, P. O. Box 821, Nanjing 210008 ( China) 1991Pedosphere1991,1,4:3
5Generation of Reactive Oxygen Species in Different Fractions of the Coelomocytes of Holothurian Eupentacta fraudatrix in Response to the Thermostable Toxin of Yersinia pseudotuberculosis in Vitro显示文摘Pure fraction (92%-95%) of phagocytes (FP) and a mixture of amoebocytes(62%) and morula cells (38 %) FPMC of the holothurian Eupentacta fraudatrix (Holothuroidea, Dendrochirota) were obtained by using ficoll verographine step gradient. Basal production of reactive oxygen species (ROS) in FP quantified by using reduction of nitroblue tetrazolium (NBT) was more than twice that in FPMC. Thermostable toxin of Yersinia pseudotuberculosis (TST) at different concentrations ( 0.2; 0.5; 2.5 μg/ml, but not 0.1 μg/ml) stimulated NBT reduction in FPMC after 24 h incubation. In FP, TST at concentrations of 0.1 and 0.2 μg/ml inhibited and at concentrations of 0.5 and 2.5 μg/ml stimulated NBT reduction after 24 h incubation. Maximal effect was observed in FP and FPMC at TST concentrations of 0.5 and 0.2 μg/ml, respectively. Addition of catalase (0.7 μg/ml) to the cells treated with TST (2.5 μg/ml) was followed by a decrease in NBT reduction compared to that under toxin treatment alone. TST stimulated superoxide dismutase activity in concentration dependent manner (maximum at 0.5 μg/ml concentration in FP) after 24 h treatment, and this stimulation was prevented by a commercial catalase. Plant lectin concanavalin A stimulated NBT reduction more than 5 fold in FPMC compared to the control. With addition of TST, lectin stimulated ROS to lesser extent than that with lectin alone. When catalase, TST, and lectin were added into the FPMC simultaneously, ROS increase was similar to that under lectin treatment alone. On the whole, data obtained indicated that ROS generation in holothurian coelomocytes especially occurs in both stimulated and not stimulated phagocytes, and that changes in ROS production by these cells may be one of the mechanisms of antibacterial protection of holothurians.Dolmatova L. S. Eliseykina M. G. Timchenko N. F. Kovaleva A. L. Shitkova O. A 2003Chinese Journal of Oceanology and Limnology2003,21,4:3
6Adsorption Kinetics of Pb^(2+) and Cu^(2+) on Variable Charge Soils and Minerals: Ⅱ. Equations for Describing Experimental Data显示文摘Different mathematical methods,including linearization,differential,integration and nonlinear least squares approximation (Newton-Marquardt method),were used to fit different kinetic equations,such as zero-order,first-order (i.e.membrane diffusion),second-order,parabolic-diffusion,Elovich,two-constant equations,to the experimental data of Pb^2+ and Cu^2+ adsorption on variable charge soils and kaolinite.Assuming each M^2+ occupied two adsorption sites,two more equations,the so-caled surface second-order equation and third-order equation were derived and compared with the above equations according to the fitting results,which showed that the second-order equation and surface second-order equation,being one equation in different expressions under some conditions,were better than the other equations in describing the Pb^2+ and Cu^2+ adsorption kinetics,and the latter was the best.HU GUO-SONGInstitute of Soil Science, A cademia Sinica, P. O. Box 821, Nanjing 210008 ( China) 1993Pedosphere1993,3,2:3
7Farmer Participatory Evaluation of Nursery Bed Treatments for the Control of Root-Knot Nematodes [Meloidogynejavanica (Treub) Chitwood and Meloidogyne incognita (Kofoid and White) Chitwood] in Smallholder Farms in Kenya显示文摘D. K. Karanja S. R. Gowen B. Ndung u R. O. Musebe S. Simons A McLeod B. R. Kerry P. K. Karanja B. Pembroke 2011Journal of Agricultural Science and Technology(A)2011,1,5:2
8Clinical Significance of the Epidermal Growth Factor Receptor and HER2 Receptor in Resectable Gastric Cancer显示文摘I. García F. Vizoso A. Martín L. Sanz O. Abdel-Lah P. Raigoso J. L. García-Mu?iz 2003Annals of Surgical Oncology2003,,3:2
9The role of endoscopy in the evaluation of suspected choledocholithiasis显示文摘John T. Maple Tamir Ben-Menachem Michelle A. Anderson Vasundhara Appalaneni Subhas Banerjee Brooks D. Cash Laurel Fisher M. Edwyn Harrison Robert D. Fanelli Norio Fukami Steven O. Ikenberry Rajeev Jain Khalid Khan Mary Lee Krinsky Laura Strohmeyer Jason A 2010Gastrointestinal Endoscopy2010,,1:2
10Usefulness of biodegradable polydioxanone stents in the treatment of postsurgical colorectal strictures and fistulas显示文摘F. Pérez Roldán P. González Carro M. Villafá?ez García S. Aoufi Rabih M. Legaz Huidobro N. Sánchez-Manjavacas Mú?oz O. Roncero García-Escribano M. Ynfante Ferrús E. Bernardos Martín F. Ruiz Carrillo 2012Endoscopy2012,,03:2
11Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols显示文摘Andreae M. O. Gelencsér A 2006Atmospheric Chemistry and Physics2006,,67:2
12Acid-sensing ion channels (ASICs) in the taste buds of adult zebrafish显示文摘E. Vi?a V. Parisi R. Cabo R. Laurà S. López-Velasco A. López-Mu?iz O. García-Suárez A. Germanà J.A. Vega 2013Neuroscience Letters2013,,:1
13Cell attachment and biocompatibility of polytetrafluoroethylene (PTFE) treated with glow-discharge plasma of mixed ammonia and oxygen显示文摘Meng Chen Paul O. Zamora Prantika Som Louis A. Pe?a Shigemasa Osaki 2003Journal of Biomaterials Science Polymer Edition2003,,9:1
14Physical modeling of the electrical double layer effects on multispecies ions transport in cement-based materials显示文摘H. Friedmann O. Amiri A. A?t-Mokhtar 2008Cement and Concrete Research2008,,12:1
15Synergistic Effect Between Two Bacteriocin-like Inhibitory Substances Produced by Lactobacilli Strains with Inhibitory Activity for Streptococcus agalactiae显示文摘Francisco O. Ruíz Gisela Gerbaldo María J. García Walter Giordano Liliana Pascual Isabel L. Barberis 2012Current Microbiology2012,,4:1
16Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development显示文摘Zhang J. Gilbert D. Gooday A. J. Levin L. Naqvi S. W. A. Middelburg J. J. Scranton M. Ekau W. Pe?a A. Dewitte B. Oguz T. Monteiro P. M. S. Urban E. Rabalais N. N. Ittekkot V. Kemp W. M. Ulloa O. Elmgren R. Escobar-Briones E. Van der Plas A. K 2010Biogeosciences2010,,68:1
17Does a Relationship Exist Between Carotid Stenosis and Lacunar Infarction?显示文摘J. Tejada E. Díez-Tejedor L. Hernández-Echebarría O. Balboa 2003Stroke: Journal of the American Heart Association2003,,6:1
18Raman spectroscopy and multivariate analysis of serum samples from breast cancer patients显示文摘J. L. Pichardo-Molina C. Frausto-Reyes O. Barbosa-García R. Huerta-Franco J. L. González-Trujillo C. A. Ramírez-Alvarado G. Gutiérrez-Juárez C. Medina-Gutiérrez 2007Lasers in Medical Science2007,,4:1
19Influence of Admission Glucose Level on Long-Term Prognosis in Patients With Acute Coronary Syndrome显示文摘Stella M. Macín Eduardo R. Perna María L. Coronel Jorge O. Kriskovich Pablo A. Bayol Valeria A. Franciosi Jorge L. Riera-Stival Bilda González-Arjol Jorge R. Badaracco 20062006,,:1
20Disease severity in familial cases of IBD显示文摘M. Andreu L. Márquez E. Domènech J.P. Gisbert V. García I. Marín-Jiménez M. Pe?alva F. Gomollón X. Calvet O. Merino E. Garcia-Planella N. Vázquez-Romero M. Esteve P. Nos A. Gutiérrez I. Vera J.L. Cabriada M.D. Martín A. Ca?as-Ventura J. Panés 2014Journal of Crohn’s and Colitis2014,,3:1
返回顶部 每页显示:
共5页 首页 上一页 第1页 下一页 末页 /5 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