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| 1 | Carbon Dioxide/Methane Separation by Adsorption on Sepiolite显示文摘在这个工作,为从由压力秋千吸附(PSA ) 的二氧化碳混合物的二氧化碳的移动的海泡石的使用过程被研究了。吸附平衡和动力学在一张改正床,和二氧化碳的吸附平衡参数被测量了,海泡石上的甲烷被获得了。一个模特儿基于 LDF 近似被雇用了模仿改正床动力学,用描述吸附平衡等温线的兰米尔方程。为作为吸附物用海泡石分开二氧化碳混合物一个 PSA 周期工作也被学习了。试验性的结果与使适应一个 PSA 系统的模型预言的相比。有比 97% 罐头高的纯净的甲烷被获得从喂包含二氧化碳,集中与建议 PSA 周期从 34% ~ 56%。这些结果建议那海泡石是有为它在为从垃圾堆气体的二氧化碳移动的一个 PSA 周期的雇用的好性质的吸附物。 | José A.Delgado María A.Uguina José L.Sotelo Beatriz Ruíz Marcio Rosário | 2007 | Journal of Natural Gas Chemistry2007，16，3： | 10 |
| 2 | 添加粉煤灰和高炉矿渣对三元混凝土耐久性和氯离子渗透性的影响显示文摘为研究硅酸盐水泥、粉煤灰和细磨粒化高炉矿渣对混凝土抗压强度和抗腐蚀性能的影响,本试验设计配置了掺合以上三种成分的三元混凝土。其中,部分硅酸盐水泥可采用水/水泥比例(w/c)为0.5的替代材料。通过抗压试验和半电池电位法来评估其抗压强度和耐腐蚀性能。试验结果表明,粉煤灰和高炉矿渣可大幅度降低混凝土的氯离子渗透性,并提高混凝土的短期和长期抗腐蚀性能。综上所述,添加粉煤灰和高炉矿渣可有效控制因氯离子渗透引起的腐蚀。 | W.Aperador A.Delgado J.Bautista-Ruiz 代顺发 | 2018 | 江西建材2018，，9： | 1 |
| 3 | Numerical simulation of a three-bed PSA cycle for the methane/nitrogen separation with silicalite显示文摘 | José A.Delgado María A.Uguina José L.Sotelo Vicente I | | 0，，： | 1 |
| 4 | CagA C‐terminal variations in Helicobacter pylori strains from Colombian patients with gastric precancerous lesions显示文摘 | L. A.Sicinschi P.Correa R. M.Peek M. C.Camargo M. B.Piazuelo J.Romero‐Gallo S. S.Hobbs U.Krishna A.Delgado R.Mera L. E.Bravo B. G.Schneider | 2010 | Clinical Microbiology and Infection2010，，4： | 1 |
| 5 | 注重发展规划 促进经济发展显示文摘 | Larry A.Delgado 李岩 | 2002 | 技术经济与管理研究2002，，6： | 0 |
| 6 | The new Caribbean Nitrogen Index to assess nitrogen dynamics in vegetable production systems in southwestern Puerto Rico显示文摘Nutrient loss from agricultural fields is one of the main factors influencing surface-and ground-water quality.Typical fertilizer nitrogen(N)consumption rates in vegetable production systems and horticultural crops in Puerto Rico fluctuate between 112 and 253 kg N/ha.The nitrogen use efficiency of vegetable crops is low,increasing the potential for nitrogen losses and high residual soil nitrate content.Quantification of residual soil N and N losses to the environment can be a difficult task.Simulation models such as the USDA-ARS N Index can be used to identify the relative magnitude of varying N-loss pathways and to identify best management practices.Field studies were conducted to quantify residual soil N and crop N removal,and to validate the Nitrogen Index in onion,tropical pumpkin and tomato production systems in the Lajas Valley in southwestern Puerto Rico.Relationships between observed and simulated values were determined to examine the capability of the model for evaluating N losses.There was good correlation between observed and predicted values for residual soil N(r=0.88)and crop N removal(r=0.99)(p<0.05).In the production systems evaluated,the N volatilization losses ranged from 1 to 4 kg N/ha,the denitrification losses ranged from 18 to 46 kg N/ha,the leaching losses ranged from 155 to 779 kg N/ha,and the residual soil nitrate ranged from 64 to 401 kg N/ha.The N use efficiency ranged from 15% to 39%.The results obtained showed that the Nitrogen Index tool can be a useful tool for evaluating N transformations in vegetable production systems of Puerto Rico's semi-arid zone. | Miguel Oliveras-Berrocales David Sotomayor-Ramirez Jorge A.Delgado Luis R.Perez-Alegriad | 2017 | International Soil and Water Conservation Research2017，5，1： | 0 |
| 7 | A nitrogen index for improving nutrient management within commercial Mexican dairy operations显示文摘Some intensive dairy operations in Mexico are contributing to large,negative environmental impacts,especially in regions dominated by high concentrations of animals.Excessive manure inputs plus additional nitrogen(N)fertilizer has,in some cases,resulted in background nitrate–nitrogen(NO3–N)levels in irrigation water that are so high,it is not safe for human consumption.One reason is that commercial farmers in this region are currently not using any method to rapidly calculate N budgets based on their practices,N inputs and/or crop N uptake.The Nitrogen Index,a quick tool that can be used to conduct an assessment within a few minutes,was developed for Mexico,but needed further testing under commercial field operations.We conducted studies in 2010 and 2011 and collected soil and crop information from several commercial farming operations to test the tool.The index accurately assessed(Po0.0001)residual soil nitrate after harvesting corn(Zea mays L.)and oats(Avena sativa L.);and also accurately assessed the N uptake of these crops(Po0.01).The Mexico N Index is a tool that can be used to quickly conduct N balances,show when N is being over-applied,and help reduce over-application,thus reducing N losses to the environment and improving management of dairy forage systems in Mexico. | Uriel Figueroa-Viramontes Jorge A.Delgado Juan I.Sánchez-Duarte Esmeralda Ochoa-Martínez Gregorio Núñez-Hernández | 2016 | International Soil and Water Conservation Research2016，4，1： | 0 |
| 8 | Use of the Nitrogen Index to assess nitrate leaching and water drainage from plastic-mulched horticultural cropping systems of Florida显示文摘Water quality in Florida is significantly impacted by nitrate(NO_(3)-N)leaching losses from agriculture in a large part of the state.Horticultural crops are planted across large areas of Florida on coarse sandy soils with low soil water retention and soil organic matter,increasing the potential for NO_(3)-N leaching.Nitrate leaching losses from the root zone of vegetable cropping systems can negatively impact groundwater.New tools such as the Nitrogen Index(N-Index)are able to quickly assess N use efficiency and losses via NO_(3)-N leaching from agricultural systems.Furthermore,the N-Index provides technical information about N losses pathways tied to agricultural management practices with a great level of confidence;this information has been used by researchers,growers and policymakers as a decision support system.However,the current version of the NIndex that has been used for different field crops has not been calibrated to be used in plastic-mulched horticultural cropping systems.The aim of this work was to calibrate and validate the N-Index for plasticmulched horticultural cropping systems of Florida.This study found that the N-Index tool accurately identified and ranked the risk of N losses in the evaluated horticultural systems.The N-Index was calibrated for Florida's plastic-mulched horticultural cropping systems using a sensitivity analysis.The adjusted N-Index was validated using compiled data of vegetables grown under plastic mulching systems during three consecutive seasons.Results from these studies suggest that the N-Index can be an easy-to-use tool capable of assessing nitrogen management practices for vegetable systems.The tool can be used to guide nutrient managers in the implementation of best nitrogen management practices that could contribute to reduced NO_(3)-N leaching losses from vegetable systems in Florida,contributing to a smaller environmental footprint and conservation of water quality. | Edilene C.S.Marchi Lincoln Zotarelli Jorge A.Delgado Diane L.Rowland Giuliano Marchi | 2016 | International Soil and Water Conservation Research2016，4，4： | 0 |
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