共查询到19条相似文献,搜索用时 15 毫秒
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新型火车客车窗玻璃用于空调客车和高速空调客车上由中国耀华玻璃集团公司研制。1996年11月通过河北省科委组织的专家鉴定。专家认为:该产品填补了国内空白,达到国际先进水平;该项研究解决了客车窗玻璃露点要低于-50℃的问题,超过了日本-35℃和英国-40℃的标准。 相似文献
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某水泥粉磨站通过火车从200 km外的水泥厂运输熟料,自卸车将熟料送入卸料棚中,人工开启车皮卸料阀门将料卸入地下料仓中,料仓负一层1条皮带将料仓中物料送入负二层长皮带,通过长皮带输送至粉磨厂区熟料库。原卸车系统在熟料入库皮带尾部设置 1 台收尘器,在地沟皮带头部和尾部分别设置 1 台收尘器,并在每个落料点设计收尘风管。系统经多年运行后,收尘效果差,熟料卸车时棚内扬尘大,环境差。为确保工作人员的身体健康及安全文明生产,延长设备使用寿命,该卸料站卸料系统原有的除尘系统进行改造。 相似文献
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随着我国经济的不断发展,我国对石油资源的需要量越来越大,因此石油生产企业的生产任务也越来越重,火车鹤管主要用在用品装车环节,是石油生产中不可或缺的一部分,其故障率的高低,对其使用效率有着非常直接的影响。 相似文献
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研制了一种微型橡胶同步带。强力层材料选用进口玻璃纤维线绳;包布层材料选用无锡产尼龙变形纱织物。带背和带齿胶料配合为:CR100;氧化锌4;硬脂酸1;软化剂5;氧化镁5;防老剂3.5;炭黑50;促进剂NA-22,TT,DM适量。经检测和实际应用证明,成品带各项性能指标均超过本所企业标准和日本JISK6379—89标准,并达到国内同类产品的先进水平. 相似文献
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金属加工微乳液是继普通乳化液之后发展起来的一种新型乳化液,是一种金属加工过程中使用的水基润滑剂.由于它具备独特的性能,近几年来开始受到人们的重视.进行确定最佳配方试验,发现以75SN为基础油,MOA-3、S-80、T-80为主乳化剂,配以适当的助乳化剂、防锈剂、抗磨剂、杀菌剂等制成的金属加工微乳液最具独特的综合性能.它集润滑性、冷却性、防腐蚀性、清净分散性于一身,同时也具备透明度好,适应范围广(铜、钢、铝)长寿命、pH低、无刺激性的优势,因而特别适合于金属精密机械加工行业使用. 相似文献
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Zhipeng Cao Kening Zhao Irvin Jose Nick J. Hoogenraad Laura D. Osellame 《International journal of molecular sciences》2021,22(9)
Cancer cachexia is a common condition in many cancer patients, particularly those with advanced disease. Cancer cachexia patients are generally less tolerant to chemotherapies and radiotherapies, largely limiting their treatment options. While the search for treatments of this condition are ongoing, standards for the efficacy of treatments have yet to be developed. Current diagnostic criteria for cancer cachexia are primarily based on loss of body mass and muscle function. However, these criteria are rather limiting, and in time, when weight loss is noticeable, it may be too late for treatment. Consequently, biomarkers for cancer cachexia would be valuable adjuncts to current diagnostic criteria, and for assessing potential treatments. Using high throughput methods such as “omics approaches”, a plethora of potential biomarkers have been identified. This article reviews and summarizes current studies of biomarkers for cancer cachexia. 相似文献
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The hydrodynamics and mass transfer of Plum Flower Mini Ring(PFMR),Pall Ring and Intalox Saddle were studied in a 600mm diameter column with air-oxygen-water system over a wide range of liquid loasds.It was shown from the experiments that PFMR had much lower resistance,larger throughput and higher mass transfer efficiency than Pall Ring and Intalox Saddle.It was clear from the comparison that existing equations could not predict the performance of packings very well at high liquied loads.Therefore,new semi-empirical equations of pressure drop,flooding gas velocity and height of transfer unit(HTU)were proposed based on the experimental data. 相似文献