高压水射流清洗在船舶修造行业的应用分析

对船舶修造行业使用清洗方式的现状进行了分析,并将高压水射流清洗和喷砂清洗的特点进行了对比,指出高压水射流清洗与喷砂清洗相比的优势,为高压水射流清洗设备制造商进军船舶修造行业提出了相关的建议.     

高压水射流技术在清洗行业中的应用

由于世界各国对环境保护日益重视,高压水射流清洗技术以其广泛的通用性和对环境无害性在清洗行业中异军突起从三个方面阐述了高压水射流技术在清洗行业中的应用：高压水射流清洗技术发展与应用,高压水射流清洗系统设备选择及高压水射流清洗节能增效技术     

高压水射流的清洗功能

介绍高压水射流清洗的基本原理．从高压水射流的清洗作用、清洗方式及从手持作业到智能化应用等三个方面结合清洗作业常用高压水射流的结构与特征进行了分析．     

高压水射流技术在清洗行业中的应用

由于世界各国对环境保护日益重视，高压水射流清洗技术以其广泛的通用性和对环境无害性和清洗行业中异军突起。从三个方面阐述了高压水射流技术在清洗行业中的应用，高压水射流清洗技术发展与应用，高压水射流清洗系统设备选择及高压水射流清洗节能增效技术。     

高压水射流的清洗功能

介绍高压水射流清洗的基本原理,从高压水射流的清洗作用,清洗方式及从手持作业到智能化应用等三个方面结合清洗作业常用高压水射流的结构与特征进行了分析。     

高压水射流管道清洗车应用分析

目前在我国各大中城市的管道清洗中,高压水射流清洗机或高压水射流清洗车被广泛使用,如何正确选用和使用好这种清洗车,具有很大的经济意义。这里对高压水射流管道清洗车的系统构成、作业流程和常见的技术问题进行了论述。     

催化装置油浆蒸汽发生器高压水射流清洗方式初探

目前,高压水射流清洗技术已经在石油化工行业检修清洗中得到普遍的应用。根据工作实践对高压水射流清洗方式在催化装置油浆蒸汽发生器上的应用为典型进行了探索,指出了自动化执行机构与人工持枪相比的优势,为石油化工企业冷换设备高压水射流清洗提供了相关参考依据。     

高压水射流技术在自来水管道内壁清洗中的应用

采用高压水射流进行清洗作业是较为环保、经济和方便的一种工艺.本文介绍了一套高压水射流清理设备,可用于自来水管道修复前的预处理,在作业效率、作业效果及成本上得到了用户的认可.该设备在城市管网修复行业具有较大的推广价值和应用空间.     

高压水射流清洗技术在石化行业的应用

简述了高压水射流清洗技术在石化行业应用的情况．提出了高压水射流清洗技术推广、应用和发展的模式     

高压水射流清洗技术在我厂的应用

在比较高压水射流清洗与化学清洗的优缺点后 ,指出碱行业采用高压水射流清洗是必然趋势 ,介绍了高压水射流清洗在我厂的应用情况以及今后的设想。     

焦油一次汽化温度计算方法的探讨

利用相平衡原理得出的焦油蒸馏时一次汽化温度的计算方法,其结果与按经验公式的计算结果进行了比较,同时讨论了一次汽化温度与焦油馏分产率及二段蒸发器过热蒸汽用量的关系。     

Techniques for screening adhesives for structural applications

—Due to its chemistry, no structural adhesive system (epoxies, acrylics, etc.) is likely to offer an ideal combination of toughness, strength, moisture resistance, and ambient-temperature curing. Therefore, for effective use of adhesives in primary structures, an engineer must be able to identify adhesives that represent an optimum compromise among the different properties. In this paper, we present techniques for screening high-strength, ambient-temperature-curing adhesives for (1) moisture resistance under sustained loading and (2) fracture resistance in a way that is directly related to joint performance.     

Efficacy for Whitlockite for Augmenting Spinal Fusion

Whitlockite (WH) is the second most abundant inorganic component of human bone, accounting for approximately 25% of bone tissue. This study investigated the role of WH in bone remodeling and formation in a mouse spinal fusion model. Specifically, morphology and composition analysis, tests of porosity and surface area, thermogravimetric analysis, an ion-release test, and a cell viability test were conducted to analyze the properties of bone substitutes. The MagOss group received WH, Group A received 100% beta-tricalcium phosphate (β-TCP), Group B received 100% hydroxyapatite (HAp), Group C received 30% HAp/70% β-TCP, and Group D received 60% HAp/40% β-TCP (n = 10 each). All mice were sacrificed 6 weeks after implantation, and micro-CT, hematoxylin and eosin (HE) staining, and Masson trichome (MT) staining and immunohistochemistry were performed. The MagOss group showed more homogeneous and smaller grains, and nanopores (<500 nm) were found in only the MagOss group. On micro-CT, the MagOss group showed larger fusion mass and better graft incorporation into the decorticate mouse spine than other groups. In the in vivo experiment with HE staining, the MagOss group showed the highest new bone area (mean: decortication group, 9.50%; A, 15.08%; B, 15.70%; C, 14.76%; D, 14.70%; MagOss, 22.69%; p < 0.0001). In MT staining, the MagOss group demonstrated the highest new bone area (mean: decortication group, 15.62%; A, 21.41%; B, 22.86%; C, 23.07%; D, 22.47%; MagOss, 26.29%; p < 0.0001). In an immunohistochemical analysis for osteocalcin, osteopontin, and CD31, the MagOss group showed a higher positive area than other groups. WH showed comparable bone conductivity to HAp and β-TCP and increased new bone formation. WH is likely to be used as an improved bone substitute with better bone conductivity than HAp and β-TCP.     

Demand Increases for New Fungicides for Rice

<正> After June this year China's regions growingmiddle and late rice had widespread blastand sheath/culm blight.Such diseasesplagued 19.2 million hectares.Starting fromJuly the market for new fungicides that cancontrol blast and sheath/culm blight for ricewas more and more active.Makers of traditional pesticides for thecontrol of blast have to contend with fiercecompetition from new pesticides in marketthis year.Kitazine,iprobenfos,isoprothiolane and tricyclazole,oftenused by farmers in the past,are graduallybeing replaced by new varieties with high