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STUDIES Of.l.W-CONCENTRATION CHROMATE PASSIVE f.l. fOR ZINC-BASED AllOY COATED STEEl WIRES

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Acta Metallurgica Sinica(English letters) 1999年第5期12卷 736-738页

作者： li, Y. Wang, H.R. feng, f.l. Wei, X.J. Northeastern Univ Shenyang China

The corrosion resistance of a low concentration chromate passive f.l. for zinc based alloy coated steel wires was assessed by salt spray and electrochemical corrosion tests. XPS and AES analyses showed that the comp... 详细信息

关键词： chromate passive f.l. zinc based alloy coating XPS AES

Effects of temperature and solvent concentration on the solvent crystallization of palm-based dihydroxystearic acid with isopropyl alcohol

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Particuology 2012年第1期10卷 127-131页

作者： Gregory f.l. Koay Teong-Guan Chuah Sumaiya Zainal-Abidin Salmiah Ahmad Thomas S.Y. Choong Department of Chemical and Environmental Engineering Universiti Putra Malaysia Advanced Oleochemical Technology Division Malaysian Palm Oil Board Institute of Tropical forestry and forest Products Universiti Putra Malaysia faculty of Chemical and Natural Resources Engineering Universiti Malaysia Pahang Director General's Office Malaysian Rubber Board

Palm-based dihydroxystearic acid of 69.55% purity was produced in a 500-kg-per-batch operation pilot plant and purified through solvent crystallization in a custom fabricated simultaneous batch crystallizer unit. The effects of temperature and solvent concentration on yield, particle size distribution and purity were studied. The purity was higher, while the yield and particle size were lower and smaller, respectively, at higher temperature and solvent concentration. The solvent crystallization process efficiency was rated at 66-69% when carried out with 70-80% isopropyl alcohol at 20℃.

关键词： Dihydroxystearic acidPilot plant operationSolvent crystallizationSimultaneous batch crystallizerProcess efficiency

STRUCTURE AND BINDING STATE Of CN_x f.l.S SYNTHESIZED BY fACING TARGETS SPUTTERING

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Acta Metallurgica Sinica(English letters) 1999年第5期12卷 752-756页

作者： Tang, D.Q. Wang, Y. Jiang, E.Y. Zhao, C. Sun, f.l. Tianjin Univ Tianjin China

CN x f.l.s were made by a facing targets sputtering ( fTS) systemon the  Si(100) substrate under different  N 2 partial pressure.  XRD, XPS, fTIR and Raman Spectroscopy( RS) were measured to investigate the structure and the binding state of the f.l.. The f.l.s are amorphous and the  N/C increases with the  N 2 partial pressure increasing and reaches 0 46 when the  N 2 pressure is 100%. The N incorporated  C forms N sp 2C and N sp 3C mainly and there is a small amount of  C≡N.

关键词： Amorphous f.l.s Hard disk storage Hardness Nitrides Silicon wafers Sputtering Synthesis (chemical)

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炼油厂和化工厂设备设计手册

炼油厂和化工厂设备设计手册

作者： f.l.·埃文斯(f.l. Evans)

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微波衰减测量

微波衰减测量

Study on Co-Suppression Extending florescence in Dracocephalum arnunense fisch ex. link

作者： f.l.·沃纳(f.l. Warner)

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Study on Co-Suppression Extending Florescence in Dracocephal...

Using both small particle size HPlC packings and unique stationary phases for improved resolution in challenging separations

第二届植物分子育种国际会议

作者： f.l. li G.f. Hu B.Z. Hu* life College of Science Northeast Agricultural University Harbin 150030

＜正＞Dracocephalum arnunense fisch ex. link is lamiaceae plant with blue large-scale flower. It is place raw Wild flower of Heilongjiang Province, which has high Ornamental Value. But its florescence is short, whole

关键词： Dracocephalum arnunense fisch ex. link Co-suppression Repeated expression vector Transformation

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Using both small particle size HPLC packings and unique stat...

30th International Symposium on Capillary Chromatography、4th GC×GC Symposium、16th National Symposium and Exhibition on Chromatography,i.e. 1st Dalian International Symposium and Exhibition on Chromatography

作者： Dorman,f.l. Romesberg,R.l. lake,R.J. Aibright,B.A. Wittrig,R.E. Restek Corporation 110 Benner Circle BellefontePA 16823 Restek Corporation 110 Benner Circle BellefontePA 16823 Restek Corporation 110 Benner Circle BellefontePA 16823 Restek Corporation 110 Benner Circle BellefontePA 16823 Restek Corporation 110 Benner Circle BellefontePA 16823

＜正＞Until recently,the use of small particles（*** than 3μm in diameter）was not practical because of the pressure limitations of commercially available HPlC *** multiple ultra high pressure systems now available,columns packed with small particles are generating a significant amount of *** to the van Deemter Equation,which relates flow rate to column efficiency,when particle size is decreased large gains in efficiency can theoretically be ***,a flatter efficiency prof.l. allows for a wider range of flow rates without significant loss of resolution.

关键词： HPlC lC Columns Separations

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卢卡奇的社会存在本体论和马克思的社会观

世界哲学 1991年第5期 52-58,8页

作者： f.l.伦德威燕宏远

卢卡奇这样来描述他自己创作的特性:它是一条“走向马克思的道路”,而他70岁时才真正开始写他的毕生著作。当然,人们不可按字面去对待这些很有主观色彩的说法;但是说卢卡奇的马克思主义创作是不断地为马克思的真正观点而斗争。

关键词：卢卡奇马克思主义社会存在本体论德意志意识形态社会本体论类属性哲学资本主义方法论科学

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术后碱性反流性胃炎

广东医学 1975年第7期 47-50页

作者：王吉甫,Bushkin f.l. 中山医学院附属第一医院

胃切除后所遇到的许多不同症状,过去概括地称为胃切除术后综合症,其后识别为倾倒、吸收不良和输入空肠攀综合症等。最近10年中又阐明了另一综合征——术后碱性反流性胃炎,这见于胃切除、胃空肠吻合术或单纯胃空肠吻合术后,亦见于迷走神... 详细信息

胃切除后所遇到的许多不同症状,过去概括地称为胃切除术后综合症,其后识别为倾倒、吸收不良和输入空肠攀综合症等。最近10年中又阐明了另一综合征——术后碱性反流性胃炎,这见于胃切除、胃空肠吻合术或单纯胃空肠吻合术后,亦见于迷走神经切断加幽门成形术后。它和其他胃切除术后综合征的鉴别是基于患者既往所施手术的类型,症状发生的时间顺序和种类、胃酸分析、X 线和胃镜检查,以及胃粘膜活体组织检查等,对不同治疗方法的效果,亦有助于将术后碱性反流性胃炎区别为一独立的综合征。Konjetzny 早在1930年代中研究了胃炎问题,并提出它是胃溃疡和胃癌的先驱。Schindler在1940年代中,对54例由于各种原因施行了胃切除的患者进行了胃镜检查,几乎所有的患者都有某些类型的胃炎。在4例粘膜正常的患者中,吻合口有幽门括约肌样的作用;而其他吻

关键词：碱性反流性胃炎患者十二指肠溃疡胆汁反流性胃炎消化性溃疡胆道疾病胆汁反流胃粘膜屏障胃切除术后