长输管道钢管防腐驻厂监造

介绍了我国工程建设管理体制的变化和监造的定义、作用、地位、职能和工作模式 ,分析了我国长输管道钢管防腐驻厂监造的发展现状。结合实际监造工作经验 ,阐明了驻厂监造的必要性和重要意义 ,根据工作现状提出了一些建议     

熔结环氧覆盖层在津京输油管道上的应用

针对民航津京输油管道工程所经地带水网发达、腐蚀环境恶劣的特点，决定选择熔结环氧覆盖层作为防腐覆盖层。介绍了该管道从钢管的工厂预制防腐技术到施工现场的补口技术。在施工完成几年后，选择该工程中腐蚀环境比较恶劣的管道段管道阴极保护测试，测试结果表明，熔结环氧覆盖层具有优越的防腐性能，使得镁阳极和锌阳极的使用寿命得到了相应的延长。     

E52-9环保型导静电防腐涂料的研制

针对大型石油储罐内防腐施工中存在易燃气体浓度超标、露点影响区覆盖层的附着力下降、油罐焊缝部位的腐蚀等问题，研制出了一种新型的E52—9环保型导静电防腐涂料，从成膜基料、无毒溶剂、抗静电剂及导电填料、E52多功能环氧树脂固化剂等方面详细介绍了该涂料的组成及特性，该涂料的应用可有效克服油罐内防腐施工中存在的问题。     

可浸种型水稻种衣剂的开发与应用研究Ⅱ几种水稻种衣剂的田间应用效果研究

本文对供试水稻种衣剂的田间应用效果进行了研究。结果表明，A－B2号种衣剂包衣水稻种子可提高种子的田间出苗率、成秧率，能增强秧苗素质；对水稻秧田期稻蓟马的防效最高，且持效期长；水稻产量也较清水对照区的提高了26．47％。     

种衣剂拌种对小麦病虫害的防治效果

研究表明，种衣剂拌种比不拌种的晚出苗１－２天，但出苗整齐，麦苗矮壮；种衣剂拌种可明显推迟小麦白粉病的始发期，并减低其在田间的流行速率和强度，抽穗开花期防效仍在９０％以上；对小麦秆黑粉、条锈病、纹枯病和地下害也有一定防效；种衣剂拌种比不抖种的小麦穗粒数增加７．７－１３．９位，千粒重提高３－７ｇ，每公顷增产达１５．３－４４．９％；以种衣剂１４号（２２％）的效果最好，种衣剂１４号（８％）次之。     

果蔬保鲜新技术

对目前国内外果蔬保鲜的8种新技术的特点、机理进行了综述,并初步探讨了果蔬贮藏保鲜的发展方向。     

黄瓜涂膜保鲜研究

通过试验确定了黄瓜复合涂膜液的最佳配比:蔗糖脂肪酸酯3.75%,海藻酸钠0.5%,可溶性淀粉6.5%,甘油1%,苯甲酸钠0.1%。用此复合涂膜液在40℃浸泡黄瓜2min,自然风干后置室温下贮藏,可明显延长黄瓜的货架寿命。     

黄瓜涂膜保鲜研究

以津研7号黄瓜品种为试材,采用不同浓度的壳聚糖及依柯系列涂膜剂、不同保鲜剂进行低温(10℃)涂膜保鲜试验。结果表明:壳聚糖涂膜剂的最佳使用浓度为15倍稀释液,作用效果以15倍 Ⅲ号保鲜剂结合处理最好。在10℃条件下贮藏28天,无明显霉烂、“大头”、发糠现象,色泽正常,风味较浓。依柯6号处理效果次之。     

磷酸铁盐涂层: 控制黄铁矿氧化的新手段

A novel coating technique was develped for controlling pyrite oxidation .The technique involved leaching pyrite particles with a solution containing low concentrations of phosphate and hydrogen peroxide.During the leaching rpocess,the iron released from pyrite by hydrogen proxide was precipitated by phosphate as a ferric phosphate coating .This coating was shown to be able to effectively prevent pyirte from oxidation and it could be established at the expense of only surface portions of pyrite.The emergence of this technique could provide a unique potential route for abating acid mine draingage and reclaiming sulfide-containing degraded mining land.     

Combined effects of sodium chlorite dip treatment and chitosan coatings on the quality of fresh-cut d’Anjou pears

This study evaluated the effects of sodium chlorite (SC) alone and its sequential treatment with edible coatings on browning inhibition and quality maintenance of fresh-cut d’Anjou pears. Edible coatings were prepared from chitosan (CH) and its water-soluble derivative carboxymethyl chitosan (CMCH), separately. Pear wedges were immersed in SC solution, followed by coating with CH or CMCH solutions. The samples were packed in unsealed bags and stored at 4 °C for subsequent color, firmness, and weight loss measurement. The effects of the SC and coating treatments on polyphenol oxidase (PPO) inhibition and microbial inactivation were also evaluated. Results indicated that SC exhibited significant (P < 0.05) inhibition of browning and PPO activity. The SC treatment was also strongly effective in inactivating Escherichia coli O157:H7 on pear slices. Coating SC-treated pear slices with CH adversely affected the quality of pear slices by accelerating the discoloration of cut surfaces and increasing the PPO activity. On the contrary, coating SC-treated samples with CMCH significantly prevented the browning reaction and inhibited PPO activity. In addition, SC and CH/CMCH coatings maintained tissue firmness and did not affect weight loss. Our study may provide a scientific basis for the use of SC + CMCH treatment as an alternative preservation treatment for fresh-cut fruits and vegetables.