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Chinese Chemical Letters 2011年第8期22卷 927-930页

作者： Ebrahim Soleimani Mohammad Mehdi Khodaei Afsaneh Taheri kal Koshvandi Department of Chemistry Razi UniversityKermanshah 67149Iran

An efficient method for the synthesis of 14-alkyl or aryl 14H-dibenzo[a,j.xanthene derivatives by the reaction of β-naphthol,and aldehydes in the presence of a catalytic amount of bismuth（Ⅲ） chloride（BiCl_3） under solvent-free conditions at 110℃is *** and aromatic aldehydes were used in the reaction and in all cases the desired products were synthesized *** reaction was studied under different temperatures;the maximum yield was obtained in a short reaction period at 110℃.The method offers the advantages of high yields,short reaction times,simplicity and easy workup compared to the conventional method of syntheses.

关键词： Bismuth(Ⅲ) chloride 14H-Dibenzo[a j.xanthenes β-Naphthol

Design and optimization of electrochemical cell potential for hydrogen gas production

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j.urnal of Energy Chemistry 2021年第1期30卷 421-427,I0013页

作者： Nawar kal-Shara Farooq Sher Sania ZIqbal Oliver Curnick George ZChen Department of Chemical and Environmental Engineering Faculty of EngineeringUniversity of NottinghamUniversity ParkNottingham NG72RDUK School of Mechanical Aerospace and Automotive EngineeringFaculty of EngineeringEnvironmental and ComputingCoventry UniversityCoventry CV12JHUK Department of Biochemistry University of AgricultureFaisalabad 38000Pakistan Institute for Future Transport and Cities Coventry UniversityCoventry CV15FBUK Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham Ningbo ChinaUniversity ParkNingbo 315100China

This study deals with the optimization of best working conditions in molten melt for the production of hydrogen(H2) *** research has been carried out on how electrochemical process occurs through steam splitting via molten hydroxide.54 combinations of cathode,anode,temperature and voltage have been investigated for the optimization of best working conditions with molten hydroxide for hydrogen gas *** these electrochemical investigations were carried out at 225 to 300℃ temperature and 1.5 to 2.5 V applied voltage *** current efficiency of 90.5,80.0 and 68.6% has been achieved using stainless steel anodic cell with nickel,stainless steel and platinum working cathode *** nickel cathode,an increase in the current directly affected the hydrogen gas flow rate at *** can be hypothesized from the noted results that increase in current is directly proportional to operating temperature and applied *** values were noted when the applied voltages increased from 1.5 to 2.5 V at 300℃,the flow rate of hydrogen gas increased from 1.5 to 11.3 cm^(3) min^(-1),1.0 to 13 cm^(3) min^(-1) in case of electrolysis@stainless steel and@graphite anode *** is observed that the current efficiency of stainless steel anodic cell was higher than the graphite anodic ***,steam splitting with the help of molten salts has shown an encouraging alternate to current methodology for H2 fuel production.

关键词： Sustainable energy Splitting steam Electrolysis Hydrogen gas production Electrochemical cell and Variable cathodes

多普勒超声在疑似颈动脉病患者中的诊断效能:同侧与对侧动脉的对比研究

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世界核心医学期刊文摘（神经病学分册） 2006年第3期2卷 37-38页

作者： Heij.nbrok-kal M.H. Nederkoorn P.j. Buskens E. 谢琰臣 Erasmus MC-University Medical Center Rotterdam PO Box 1738 3000 DR Rotterdam Netherlands

Background and Purpose -To evaluate duplex ultrasonographic thresholds for the determination of 70%to 99%stenosis of the ipsilateral and contralateral internal carotid artery in patients with symptoms of amaurosis fugax, transient ischemic attack (TIA), or minor stroke based on 2 criteria: maximizing accuracy and optimizing cost-effectiv- eness and to compare these with current recommendations. Methods -From j.nuary 1997 to j.nuary 2000, a prospective multicenter study was conducted including 350 consecutive patients with symptoms of amaurosis fugax, TIA, or minor stroke who underwent bilateral duplex ultrasonography and digital subtraction angiograp hy. A linear regression analysis was performed to estimate the degree of angiogr aphic stenosis as a function of the peak systolic velocity (PSV). PSV thresholds were calculated for the ipsilateral and contralateral carotid arteries based on maximizing accuracy and optimizing cost-effectiveness. Results -The PSV measu rements significantly overestimated the angiographic stenosis in the contralater al artery (9.5%; 95%CI, 6.3%to 12.7%) compared with the ipsilateral carotid artery. The recommended PSV threshold for the diagnosis of 70%to 99%stenosis i s 230 cm/s. Maximizing accuracy, the optimal PSV threshold for the ipsilateral a rtery was 280 cm/s, and for the contralateral artery, 370 cm/s for diagnosing a 70%to 99%stenosis. Optimizing cost-effectiveness, the optimal PSV threshold was 220 cm/s for ipsilateral and 290 cm/s for contralateral carotid arteries. Conclusions -PSV measurements overestimate the degree of angiographic stenosis in the contralateral carotid artery in patients with symptoms of amaurosis fugax, TIA, or minor stroke. Separate PSV thresholds should be used for the ipsilateral and contralateral carotid artery. PSV thresholds that optimize cost-effectiveness differ from the recommended thresholds and from thresholds that maximize accuracy.

关键词：颈动脉病诊断效能多普勒超声检查收缩期峰值一过性黑蒙狭窄程度颈动脉狭窄颈内动脉狭窄最佳

永远消逝的电波——大韩航空kal 007班机神秘空难

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航空档案 2008年第6期 78-85页

作者： C-j.埃伦加德吕玉冬

1983年8月31日深夜、格林尼治时间2：36，承担kal 007航班任务的大韩航空公司的一架波音747 HL 7442飞机在偏离了正常航线500多公里后，被苏联战斗机击落于萨哈林岛附近。机上269人全部丧生。对于这一点，几乎所有的人都没有异议。但在... 详细信息

1983年8月31日深夜、格林尼治时间2：36，承担kal 007航班任务的大韩航空公司的一架波音747 HL 7442飞机在偏离了正常航线500多公里后，被苏联战斗机击落于萨哈林岛附近。机上269人全部丧生。对于这一点，几乎所有的人都没有异议。但在其他方面，人们的意见就有了分歧。这一重大事件堪称冷战时代最为严重的事件之一，因为它差点引发了核战并导致世界末日的到来。20多年过去了，作者旧事重提的目的并非是要让人们围绕着269人之死重新进行论战，而是想回顾一下现有的关于此事件的各种观点看法并将它们与已知的事实进行核对、进而作出一个总结。他的结论或许会出人意料，但在这一令人痛心疾首的事件中，一切又都是出人意料的。

关键词：大韩航空公司重大事件电波空难神秘战斗机击落冷战时代世界末日

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油酸浮选明矾石矿的实验室试验

国外金属矿选矿 1982年第7期 20-28页

作者： j.D.Miller j.B.Ackerman 黄开国

明矾石[kal3（SO4）2（OH）6]是一种有前途的非铝土矿型铝资源,美国估计有800×10～4吨含35％明矾石的储量。与明矾石伴生的主要脉石矿物是石英。已经研究用来处理这种矿石的热化学过程,不能在处理前把脉石初步除去。在这方面,用选矿达... 详细信息

明矾石[kal3（SO4）2（OH）6]是一种有前途的非铝土矿型铝资源,美国估计有800×10～4吨含35％明矾石的储量。与明矾石伴生的主要脉石矿物是石英。已经研究用来处理这种矿石的热化学过程,不能在处理前把脉石初步除去。在这方面,用选矿达到显著的技术和经济利益可能是理想的。实验结果指出油酸浮选法的效率和例证在细粒选矿中碰到的问题。这些结果表明,分选质量与温度、捕收剂用量和抑制剂用量的关系,它取决于磨碎时达到的解离程度。粗磨时,由于连生体存在,分选质量受到限制;而细磨时,解离比较彻底,得到较好的分选。每一粒级的解离度,用扫描式电子显微镜（能量扩散的X射线技术）测定。发现它与磨碎的程度无关,并假定解离度是由于无选择破碎和没有分开的结果。在达到89％—400目的情况下,分选质量看来不仅受到剩余的连生体颗粒限制,而且明矾石还受到细粒石英脉石（—2微米）污染的影响。磨到—400目时,在50℃的条件下,最佳的选别结果是:粗选回收率88％,品位为65％的明矾石。

关键词：粗选回收率分选系数品位明矾石白矾铝矿物连生体解离度磨矿细度油酸十八碳烯--酸十八碳烯酸

Up-scaling of Thin Film Silicon Solar Cells by Industrial Large-Area PECVD kal Systems

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Up-scaling of Thin Film Silicon Solar Cells by Industrial La...

没食子酸与胶原蛋白多肽之间相互作用酏分子力学和动力学研究

第十五届国际光伏科学与工程大会

作者： j.MeierI U.Kroll T.Roschek j.Spitznagel S.Benagli Ch.Ellert G.Androutsopoulos A.Hiigli W.Stein j.Springer O.Kluth D.Borello M.Poppeller G.Biichel A.Bfichel Unaxis Unaxis Balzers AG 9496 Balzers Liechtenstein

Further progress in cell and module performance has been achieved. Up-scaling of the amorphous cell to modules by laser-scribing led to initial aperture efficiencies of 9.4 % (in KA1-M) for Asahi 30x22cm2 substrates and to 98.2 W for industrial size AFG 1.4 m substrates (in kal-1200). Encapsulated a-Si:H single-j.nction p-i-n 1.4 m2 modules fabricated on AFG front TCO with back contacts of LPCVD ZnO pass successfully the German TU-V (Rheinland) damp heat test of 1000 h. Our 1.4 m a-Si:H modules show as well no decay after the thermal cycling test (according to the IEC-norm, performed by TUV). Microcrystalline silicon solar cells with open circuit voltage of 500 mV and cell efficiencies of 6.3 % tat absorber thickness of 1 um) have been obtained. In the industrial KAI-1200 uc-Si:H growth at around 5 A/sec has been achieved with good thickness homogeneity and crystallinity over the 1.4 m substrate area. Micromorph tandem test cells fabricated on Asahi U-type from SnO and in-house developed LPCVD front ZnO resulted in efficiencies of 10.7%, respectively of 10.1%. LPCVD ZnO confirms enhanced light-trapping properties for μc-Si:H bottom cells resulting in reduced μc-Si:H absorber layer thickness.

关键词： PECVD amorphous silicon microcrystalline silicon ZnO manufacturing

来源： cnki会议评论

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北京皮革（中外鞋讯）（下） 2013年第4期 84-87页

作者： B.Ma,dhan P.Thanikaivelan V.Subramanian j.EaghavaEao BaIachandranUnniNair T.Ramasamj.何青(编译) 不详四川大学制革清洁技术国家工程实验室成都610065

应用分子建模的方法可以模拟植物鞣剂对蛋白质的鞣制作用，识别相互作用位点，计算配位化合物的结合能，有助于理解胶原多肽与没食子酸之间的相互作用。计算不同几何结构的结合能范围为6—13kal／mol。研究发现，一些配合物之间显示出... 详细信息

应用分子建模的方法可以模拟植物鞣剂对蛋白质的鞣制作用，识别相互作用位点，计算配位化合物的结合能，有助于理解胶原多肽与没食子酸之间的相互作用。计算不同几何结构的结合能范围为6—13kal／mol。研究发现，一些配合物之间显示出氢键，同时在没食子酸稳定蛋白质方面，静电作用占主导性，n—OH在维持多肽稳定性方面也起着一定的作用。600ps的分子动力学模拟（MD）说明，胶原多肽和没食子酸之间可能存在氢键。

关键词：分子动力学模拟相互作用位点没食子酸胶原多肽蛋白多肽分子力学配位化合物植物鞣剂