WATER LOSSES ALONG A REACH OF THE PECOS RIVER IN NEW MEXICO1

ABSTRACT: A reach of the Pecos River, located in eastern New Mexico, was examined to evaluate losses of river flows due to evaporation, seepage, and transpiration. An accurate assessment of the water losses along this reach is critical for determining how water rights are adjudicated for water users in the Pecos basin and interstate compact accounting. Water losses significantly impact flows through critical habitat for species protected under the Endangered Species Act. Daily losses of river flows were analyzed for the study reach that extends from immediately below the Pecos River confluence with Taiban Creek to the United States Geological Survey (USGS) gage near Acme. The analysis was completed with consideration for other processes including flood wave travel times and attenuation along with stream bank storage and returns. The analysis was completed using daily stream flow data from USGS gages located along the study reach. Empirical seasonal functions were developed to relate flow loss to the flow rate in the river. The functions were ultimately developed to provide a method for comparing the effects of different river flows on the available water supply.     

导弹火工品贮存寿命的影响因素分析

以现役某型反舰弹火工品为研究对象,结合其贮存、使用、维护的特点,分析了可能影响贮存寿命的因素.对火工品定寿模式及方法进行了分析,对双因素试验法在火工品定寿方面的优势进行了综述,同时对其过程及模型进行了研究.利用双因素试验法,对某导弹2类火工品定寿的影响因素进行了分析.研究结果表明,温度是火工品贮存寿命最主要的影响因素.     

阿伦尼乌斯公式在弹箭贮存寿命评估中的应用

以某型号导弹舵机橡胶密封材料为例,阐述了弹箭贮存寿命定量评估的方法,分析了科学确定失效判据的重要性,介绍了自然环境试验和实验室加速老化试验在弹箭贮存寿命定量评估中的应用.重点论述了阿伦尼乌斯公式应用于弹箭贮存寿命定量评估的本质,详细说明了阿伦尼乌斯公式适用的反应及温度,强调了应用阿伦尼乌斯公式定量评估弹箭贮存寿命必须进...     

Ex-ante environmental assessments of novel technologies - Improved caprolactam catalysis and hydrogen storage

Utrecht University has conducted a pilot sustainability assessment for the executive board of the chemistry program ACTS (Advanced Chemical Technologies for Sustainability) of the Netherlands’ Organization for Scientific Research (NWO). These assessments represent prospective, i.e. ’ex-ante’ studies on the production of caprolactam by an improved catalyst and on different hydrogen storage options (i.e. compressed and liquefied hydrogen, storage in metal hydrides and storage in a metal organic framework). The pilot sustainability assessments followed the principles of environmental life cycle assessment (LCA), thereby focusing on non-renewable energy use (NREU) and climate change (GWP100). It was found that caprolactam with the novel catalyst has lower impacts than petrochemical caprolactam production from benzene but higher impacts than bio-based caprolactam produced via fermentation. Regarding hydrogen storage, it was found that compressed and liquid hydrogen have the highest impacts. The impacts of the metal hydrides and the metal organic frameworks show by far the lowest environmental impacts. The main reason is that these materials can be reused up to 1500 times (refilling of tank), while for compressing and liquefaction of hydrogen energy is needed each time a tank needs to be refilled. The study demonstrates the successful application of ex-ante technology assessment.     

榆林气田地下储气库建设前期技术研究

榆林气田自2001年投入规模开发以来积累了丰富的地质认识,通过已有的动、静态地质资料和国内外储气库建设的经验,细化地质模型,优选封闭构造体,优化储气库参数,建设一个具有储气量大、安全系数高、经济效益好的储气库,从而满足用气高峰期时下游用户的需求。     

产毒微囊藻mcyA基因荧光定量PCR方法的建立

针对微囊藻毒素合成酶基因mcyA探索一种适用于自然水样中微囊藻毒素产毒潜能检测的TaqMan实时荧光定量PCR方法.该方法从铜绿微囊藻FACHB-1279中的mcyA基因中扩增出目的基因片段,用TA克隆方法将基因片段插入Allel TA vector (ABP-CETAVEC020)中来制备质粒标准晶.通过不同连续稀释...     

聚烯烃料仓防静电燃爆治理技术的应用

介绍了粉体静电消除技术在聚烯烃料仓的应用,以及料仓采取静电消除措施治理后取得的效果。     

Cu-Mg-Al催化剂上NOx储存及分解性能研究

采用共沉淀方法制备了Cu-Mg-Al水滑石混合氧化物催化剂,并对该催化剂及其前驱物进行了XRD表征.使用等温吸附、程序升温脱附以及C₃H₆程序升温表面反应分别考察了催化剂上NO_x储存及分解反应性能.结果表明,由于Cu-Mg-Al催化剂中CuO组分发挥了NO氧化作用,促进了进气中NO_x以硝酸盐方式吸附在催化剂上,因此该催化剂具有很好的NO_x储存性能;在富燃条件下,C₃H₆能够显著降低催化剂上硝酸盐的热稳定性,在160～360 ℃温度范围内,这些硝酸盐会迅速分解成气态NO_x,同时随着C₃H₆加入量的提高,C₃H₆也可以将少量气态NO_x进行还原.     

碳捕捉与封存研究进展浅析

碳捕捉与封存技术(Carbon capture and storage,CCS)是利用技术手段将CO2捕集,运输,最后永久封存,使其与大气隔离的技术。其主要目的在于降低碳排放,延缓气候变化。文章介绍了碳捕捉与封存技术的原理及概念,阐述了碳捕捉与封存的技术方法,并介绍了当前的研究进展。最后对该项技术的发展进行了展望,指出高昂的成本将成为CCS技术广泛应用的阻碍;燃烧前捕集可能成为今后CCS技术发展的一个方向。     

吸附法回收化工储运过程溢出气的实践与探索

分析了现有单级活性炭变温吸附回收技术使用现状,同时对目前创新发展的多级活性炭变温吸附回收技术进行了可行性分析,结果表明:在化工储运生产过程中,采用多级活性炭吸附、蒸汽脱附、常温冷却水冷凝技术回收化工储运过程溢出气比较彻底、安全.