新型压敏胶残留物水基清洗剂的研制

为了清除公共环境和商品上的压敏胶残留物,研制了一种低挥发性的压敏胶水基清洗剂。通过配方组分筛选试验和正交试验优化出了以苯甲醇为主的水基清洗剂配方;通过添加表面活性剂,选择适当的工艺参数,制备了均匀稳定的水基清洗剂。该清洗剂可快速清除多种极性基材表面的压敏胶残留物,具有对基材无腐蚀、污染小、成本低和常温使用等优点。     

2011年我校新增4项授权发明专利

压敏胶残留物水基清洗剂,ZL200710078159.5（冯才敏）。本发明涉及一种压敏残留物水基清洗剂,特点是：其包括苯甲醇、表面活性剂、丙三醇、有机助剂及水;其各含量的重量百分比为：苯甲醇为10%-25%,表面活性剂为1%-5%,丙三醇为1%-5%,有机助剂为0%-10%,水为余量。其具有挥发性低、渗透力强、高效安全、清洗速度快、挥发性低、对人体无毒无害等优点。     

制取苯胺后仪器残留物的清洗方法

通过对制取苯胺后仪器残留物的成分厦其成因分析，寻找清洗残留物的最佳方法．根据残留物的性质，将机械冲洗、碱洗、酸洗、氧化清洗和络合清洗等方法结合使用，清洗后仪器壁上不留任何残留物，水洗倒挂壁上形成均匀水膜，完全可再次用于实验操作．该方法很好地解决了制取苯胺后仪器残留物难以清洗的问题，对实验室相关实验和工业生产有一定的指导作用．     

化学与金属类文物的保护

化学与金属类文物的保护徐州师范学院（２２１００９）秦正龙金属类文物，在外界条件及内部因素的影响下，会受到不同程度的锈蚀．它先是在文物的表面上发生，然后逐渐深入到器物的内部．锈蚀反应的结果，形成各种矿物质（即金属盐类）．这时金属器物会失去原来的特征，最...     

用肥皂制防水粉

用肥皂制防水粉山西离石县吕梁高专化学系（０３３０００）刘新民一、实验原理肥皂是一种表面活性剂，主要成份是各种高级脂肪酸钠。脂肪酸钠分子由憎水基一Ｒ和亲水基一ＣＯＯＮａ两部份组成，因此对油和水ｓｉｔ具有亲和性。当脂肪酸钠和氢氧化钙粉末在水溶液中反应时，...     

陶质文物修复中的几点认识

陶质文物的修复是修复工作中最常见最基础的部分。无论修复何种材质的器物 ,首先要对文物有充分全面地了解 ,认清其历史背景、结构组成、制作工艺、埋藏环境、病变原因、保存状态等 ,并在此基础上制订出详细、可行的修复计划。在制订了修复计划后 ,便可实施具体的修复工作。包括清洗、加固、粘结、补全、最后的封护和维护等步骤 ,这些都要遵守修复原则 ,任何不利于文物保护的方法都是不可实施的。陶器表面装饰层的修复是个较为敏感的问题 ,亦无统一规定 ,应在遵守修复原则的前提下视具体情况进行。资料记录、档案建立是现代修复中极为重要的 ,应引起高度重视。考古发掘现场器物的提取与保护在我国一直都是由考古人员负责 ,其实修复人员参与其中 ,将会更加完整、科学地提取与保护器物。     

基于空化喷射技术的水下机器人射流清洗仿真与实验（英文）

目的:污染物质的存在会引起海底环境中的许多经济和生态问题。本文以遥控无人潜水器(ROV)为基础承载平台,实现基于空化喷射清洗技术的水下结构表面附着物清洗。创新点:将空化射流清洗技术与ROV结合,并利用空化泡在清洗表面区域溃灭产生的微射流冲击,以达到清理水下表面附着物和污垢层的目的。方法:1.通过计算流体动力学(CFD)仿真与实验,针对ROV水下喷射模型,在不同状态和不同参数下对水下射流的规律进行测试与比较。2.实验对比验证在不同喷射距离下所设计的空化射流清洗装置清理海底生物的能力。结论:1.当入口压力P=30 MPa,孔径d=2 mm,出口长度L=16 mm和出口直径D=16 mm时,水下喷嘴具有更高的清洁度和清洁效率,可以满足清洁要求。2. ROV喷嘴离水下泥浆越远,冲刷深度越浅。3.所设计的ROV空化喷射清洁装置与目标的距离越近,清洗强度越高;然而,当压力恒定且距离太近时,过度阻力会削弱冲洗强度。     

磨料水射流工艺参数对工件加工指标的影响

针对磨料水射流抛光零件表面的工艺参数——加工时间、靶距、射流压力、喷射倾角、磨料粒度、磨料浓度、流量等对加工指标的影响，用正交试验方法，进行有关试验。结果表明，针对不同材料，不同表面粗糙度要求，选择合理工艺参数对零件进行光整加工影响不同。     

发电厂板式换热器化学清洗中氨基磺酸的运用研究

发电厂板式换热器在进行清洗时,主要应用氨基磺酸清洗的化学清洗工艺及经验等,氨基磺酸能够对板式换热器表面的垢渍有效去除,并且其腐蚀速率相对比较小,为同类机组的板式换热器清洗提供了重要的借鉴.     

硬质合金的双极性脉冲电液束加工工艺研究

在弱碱性（ｐＨ：10～11无机水基电解液中，针对YG类硬质合金材料，采用双极性脉冲电流电解一磨料流喷射的电液束复合加工方法，对加工机理及加工过程进行了初步的分析和研究．在实验的基础上，总结出电参数、电解液参数等主要工艺参数对材料去除率、加工精度、表面粗糙度、电流效率等工艺性能指标的作用规律，并获得了较好的加工效果．其中，材料去除率最高为130mm3／min，加工精度达0．08mm． 表面粗糙度达 Ra 0．4 μm．     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

胡主席在印度,我却在中国

Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer.     

STORIES

正A One day a pig went to the stable(马棚)to see his good friend,an oldhorse,and was going to stay there forthenight.Night came and it was time forsleep.The pig went into the straw heap(稻草堆)and lay comfortably.A longtime passed,but the horse was stillstanding there and did not move.Thepig asked the horse why he did not go tosleep."Standing like this is the begin-ning ofsleeping,"answered the horse.     

巧妙引语(英文)

正1.Any fool can count the seeds in an apple.Only God can count all the apples in one seed.2.Happy families are all alike;every unhappy family is unhappy in its own way.3.Memories are the key not to the past,but to the future.4.Sometimes in the dark you see what you want to see.5.There is a great difference between     

Information for Authors

正Scope and Policy The Journal of Chongqing University-English Edition(JCQU-E)is a peerreviewed journal publishing research articles in multiple disciplines of science and technology,covering civil and environmental engineering,chemical engineering,biotechnology,mechanical and electrical engineering,computer and data processing,mining,metallurgy,materials science,and interdisciplines thereof.