共查询到20条相似文献,搜索用时 125 毫秒
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今年7月13日至16日,在美国芝加哥召开了1987年国际电镀与表面精饰会议及展览会。这次会议是由美国电镀与表面精饰者学会、金属精饰供应者协会、国家金属精饰者学会和表面精饰国际联合会等十四个组织联合发起召开的。参加会议的除美国以外,还有英、德、法、日、意、加拿大、朝鲜和中国等60多个国家和地区的300多名国际电镀与表面精饰工作者参加。我国上海轻工业专科学校的张炳乾副教授出席了这次会议,并在会上宣读了题为“塑料电镀中非贵金属 相似文献
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天津市电镀学会“第六届学术年会”与“表面处理材料与设备展览会”于1988年10月17日至19日在天津科学会堂召开.出席这次会议的代表250余人,其中天津市代表180余人,来自全国20多个省市地区的代表70余人,有八个单位参加了展览.到会代表中,有多年从事表面处理技术研究的老一 相似文献
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S4储气库为SQ储气库群的一部分,定位为季节调峰及应急供气型储气库。建成后即可充分利用H油田良好的地质条件、地域优势和完善的地面已有设施等建库资源,满足京津冀晋地区快速增长和季节用气峰谷差的天然气市场要求,对于优化京津冀地区能源结构,推进区域低碳、清洁发展具有重大意义。针对目标区,从气藏地质特征和气藏工程两方面入手,对气藏圈闭、构造特征、盖层特征、储层物性、气体性质、储量规模、地层压力、动态储量、采出程度等方面进行了可行性分析。结果表明,区块的盖层密封性以及边界断层的侧向封堵作用比较良好,具备建库的基本地质条件;气藏储量较大,采出程度较高,为改建储气库提供有利条件。此外,规划设计了储气库的运行参数,为具体实施建库项目奠定了基础。 相似文献
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天津石化320万t/a柴油加氢装置多次采用抚顺石油化工研究院开发的FHUDS系列催化剂进行了国V柴油的生产,该系列催化剂在生产中能够满足成品油质量升级到国V排放标准的需要。该装置工业应用结果表明,FHUDS系列催化剂是生产清洁柴油的理想催化剂,均能生产硫含量符合国Ⅴ排放标准的车用柴油组分,且在保证催化剂性能的前提下FHUDS-8催化剂堆比降低了20%。 相似文献
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Chemical engineering education aims to equip students with both theoretical knowledge and hands-on capability to solve practical problems. At Imperial College London, this is practiced via three laboratory-based courses, which span over the first three years of the undergraduate curriculum. The Foundation, Knowledge and Discovery Laboratories were designed based on Kolb’s experiential learning theory as well as Vygotsky’s zone of proximal development. Although these courses intend to challenge students, appropriate scaffolding is in place to ensure a satisfactory learning experience across the spectrum of abilities. Assessment and survey results show that all students were capable of meeting the learning goals (>96% achieving satisfactory to excellent results in academic years 2014–2016), while a large majority is satisfied with the courses (>80% in academic years 2014–2016). The design and implementation of these courses are discussed to promote the exchange of good practices within the higher education community. 相似文献
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This report is written on the basis of the summary on ten-year field exposure tests made at the reinforced concrete observation stations in Zhanjiang, Shanghai and Tianjin. Through the exposure tests at the sites, detailed studies were made and various factors causing corrosion of reinforcements in the reinforced concrete structures for harbor works are discussed. 相似文献
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Ionic liquids for absorption and separation of gases: An extensive database and a systematic screening method
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Yongsheng Zhao Rafiqul Gani Raja Muhammad Afzal Xiangping Zhang Suojiang Zhang 《American Institute of Chemical Engineers》2017,63(4):1353-1367
Ionic liquids (ILs) have attracted considerable attention in both the academic and industrial communities for absorbing and separating gases. However, a data‐rich and well‐structured systematic database has not yet been established, and screening for highly efficient ILs meeting various requirements remains a challenging task. In this study, an extensive database of estimated Henry's law constants of twelve gases in more than ten thousand ILs at 313.15 K is established using the COSMO‐RS method. Based on the database, a new systematic and efficient screening method for IL selection for the absorption and separation of gases subject to important target properties is proposed. Application of the database and the screening method is highlighted through case studies involving two important gases separation problems (CO2 from CH4 and C2H2 from C2H4). The results demonstrate the effectiveness of using the screening method together with the database to explore and screen novel ILs meeting specific requirements for the absorption and separation of gases. © 2017 American Institute of Chemical Engineers AIChE J, 63: 1353–1367, 2017 相似文献
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H. Wessels 《European Journal of Lipid Science and Technology》1975,77(1):23-25
Further Development of Codex Alimentarius Standards for Oils and Fats Further development of Codex Alimentarius standards for oils and fats, which was discussed at the 7th meeting of the Codex Committee in London, is reported. Limits of fatty acid composition of individual oils and fats, problems of solvent residues as well as the development of new standards for lowerucic rapeseed oil, low calorie spreads, coconut oil, palm oil and palm kernel oil were discussed at the above meeting. It has already been realized that the Recommended Standards have a significant impact both on harmonization work within the European Community and international development of food legislation. 相似文献
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代森锰锌及其代谢物乙撑硫脲在苹果及土壤中的残留研究 总被引:10,自引:4,他引:10
本文报道了代森锰锌及其人代谢乙撑硫脲在苹果和土壤中的消解动态及残留状态。两年两地实验表明,苹果中的最终钱留未超过FAO/WHO的最大残留允许量规定,但绝大多数样品都检出痕量的乙撑硫脲。 相似文献
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A sophisticated style of mentoring has been found to be essential to support engineering student teams undertaking technically demanding, real-world problems as part of a Project-Centred Curriculum (PCC) at The University of Queensland. The term ‘triple-objective’ mentoring was coined to define mentoring that addresses not only the student's technical goal achievement but also their time and team management. This is achieved through a number of formal mentor meetings that are informed by a confidential instrument which requires students to individually reflect on team processes prior to the meeting, and a checklist of technical requirements against which the interim student team progress and achievements are assessed. Triple-objective mentoring requires significant time input and coordination by the academic but has been shown to ensure effective student team work and learning undiminished by team dysfunction. Student feedback shows they value the process and agree that the tools developed to support the process are effective in developing and assessing team work and skills with average scores mostly above 3 on a four-point scale. 相似文献
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采用OV-20l为固定液,2,2'-二硝基联苯作内标物,气相色谱法测定p,p'-滴滴涕含量。 相似文献