文昌帝君繪像寶訓Wen chang di jun hui xiang bao xun.Précieuses instructions du dieu de la Littérature, avec illustrations.

Contient : I陰隲文圖註Yin zhi wen tu zhu.Le Yin zhi wen, illustré et commenté ; II百善孝為先Bai shan xiao wei xian.De toutes les vertus, la piété filiale est la première ; III萬惡淫為首Wan e yin wei shou.De tous les vices, la luxure est le premier ; IV戒賭歌Jie lu ge.Chanson contre le jeu ; V續附應驗良方Xu fu ying yan liang fang.Annexes : recettes médicales diverses

集沙門不應拜俗等事Ji sha men bu ying bai su deng shi.Collection de pièces sur la question du salut des bonzes aux laïques.

Contient : I (livre 1)晉尚書令何充等執沙門不應敬王者奏并序Jin shang shu ling he chong deng zhi sha men bu ying jing wang zhe zou bing xu.Rapports au trône de He Chong, président du Conseil privé, et autres sur les marques de respect qui ne sont pas dues par les religieux au souverain ; II (livre 1)車騎將軍庾冰為成帝出令沙門致敬詔Ju qi jiang jun yu bing wei cheng di chu ling sha men zhi jing zhao.Ordre aux religieux de manifester leur respect, donné par Yu Bing, maréchal de Ju qi, au nom de l'empereur Cheng ; III (livre 1)太尉桓玄與八座桓謙等論道人應致敬事書并序Tai wei huan xuan yu ba zuo huan qian deng lun dao ren ying zhi jing shi shu bing xu.Avis du grand maréchal Huan Xuan, adressé au ministre Huan Qian et autres, sur les marques de respect dues par les religieux ; IV (livre 1)八座等答桓玄明道人不應致敬事書Ba zuo deng da huan xuan ming dao ren bu ying zhi jing shi shu.Réponse du ministre et autres à Huan Xuan : il n'y a pas lieu pour les religieux de donner des marques de respect ; V (livre 1)桓玄與中書令王謐論沙門應致敬事書Huan xuan yu zhong shu ling wang mi lun sha men ying zhi jing shi shu.Avis de Huan Xuan adressé au Président du Conseil privé Wang Mi sur les marques de respect dues, etc ; VI (livre 1)王謐答桓玄明沙門不應致敬事書Wang mi da huan xuan ming sha men bu ying zhi jing shi shu.Réponse de Wang Mi à Huan Xuan : il n'y a pas lieu, etc ; VII (livre 1)桓玄難王謐不應致敬事Huan xuan nan wang mi bu ying zhi jing shi.Objections de Huan Xuan à Wang Mi ; VIII (livre 1)王謐答桓玄應致敬難Wang mi da huan xuan ying zhi jing nan.Réponses de Wang Mi aux objections de Huan Xuan ; IX (livre 1)桓玄與廬山法師慧遠使述沙門不致敬王者意書并遠答往反Huan xuan yu lü shan fa shi hui yuan shi shu sha men bu zhi jing wang zhe yi shu bing yuan da wang fan.Correspondance de Huan Xuan avec le bonze Hui yuan au sujet des marques de respect ; X (livre 2)晉廬山釋慧遠沙門不敬王者論并序Jin lü shan shi hui yuan sha men bu jing wang zhe lun bing xu.Dissertation de Hui yuan sur les marques de respect non données par les religieux ; XI (livre 2)偽楚桓玄許沙門不致禮詔Wei chu huan xuan xu sha men bu zhi li zhao.Décret rendu par Huan Xuan, empereur de Chu, pour autoriser les religieux à ne pas accomplir les rites de respect ; XII (livre 2)侍中卞嗣之等執沙門應敬奏。桓楚答Shi zhong bian si zhi deng zhi sha men ying jing zou. Huan chu da.Rapport du conseiller Bian Si zhi et autres sur les marques de respect dues par les religieux. Réponses de Huan, empereur de Chu ; XIII (livre 2)宋孝武帝抑沙門致拜事Song xiaowWu di yi sha men zhi bai shi.Xiao Wu di, des Song, oblige les religieux à saluer ; XIV (livre 2)夏赫連勃勃令沙門致拜事Xia he lian bu bu ling sha men zhi bai shi.He lian Bu bu, de Xia, ordonne aux religieux de saluer ; XV (livre 2)齊武帝論沙門抗禮事Qi wu di lun sha men kang li shi.Avis de Wu di, des Qi, sur la résistance des religieux aux rites ; XVI (livre 2)隋煬帝敕沙門致拜事。興善寺沙門明瞻答Sui yang di chi sha men zhi bai shi. Xing shan si sha men ming zhan da.Yang di, des Sui, ordonne aux religieux de saluer. Réponse de Ming zhan ; XVII (livre 2)洛濱翻經館沙門釋彥悰福田論并序Luo bin fan jing guan sha men shi yan cong fu tian lun bing xu.Dissertations de Yan cong Fu tian, bonze du Fan jing guan ; XVIII (Livre 3)制沙門等致拜君親敕Zhi sha men deng zhi bai jun qin chi.Ordre aux religieux de saluer les princes et leurs parents ; XIX (livre 3)大莊嚴寺僧威秀等上沙門不合拜俗表Da zhuang yan si seng wei xiu deng shang sha men bu he bai su biao.Rapport pour établir que les religieux ne doivent pas saluer les laïques, présenté par Wei xiu et autres religieux de Da zhuang yan si ; XX (livre 3)西明寺僧道宣等上雍州牧沛王賢論沙門不應拜俗事啟Xi ming si seng dao xuan deng shang yong zhou mu pei wang xian lun sha men bu ying bai su shi qi.Rapport de Dao xuan et autres religieux de Xi ming si présentant l'avis du prince de Phei, que les religieux ne doivent pas, etc ; XXI (livre 3)西明寺僧道宣等上榮國夫人楊氏請論沙門不合拜俗事啟Xi ming si seng dao xuan deng shang yong guo fu ren yang shi qing lun sha men bu he bai su deng shi qi.Rapport de Dao xuan, etc., présentant la prière et l'avis de la princesse de Yong, que les religieux ne doivent pas, etc ; XXII (livre 3)西明寺僧道宣等序佛教隆替事簡諸宰輔等狀Xi ming si seng dao xuan deng xu fo jiao long ti shi jian zhu zai fu deng zhuang.Rapport de Dao xuan, etc. faisant l'historique de la religion bouddhique ; XXIII (livre 3)中臺司禮太常伯隴西王博又（autre titre 叉）大夫孔志約等議狀Zhong tai si li tai shang bai long xi wang bai you (autre titre cha) da fu kong zhi yue deng yi zhuang.Avis formulé par le prince de Long xi, Kong Zhi yue, etc ; XXIV (livre 3)司元太常伯竇德玄少常伯張仙壽等議狀Si yuan tai shang bai dou de xuan shao shang bai zhang shan shou deng yi zhuang.Avis formulé par Dou De xuan, Zhang Shan shou, etc ; XXV (livre 3)司戎太常伯城護軍鄭欽泰員外郎秦懷恪等議狀Si rong tai shang bai hu jun zheng qin tai yuan wai lang qin huai ke deng yi zhuang.Avis formulé par Zheng Qin tai, Qin Huai ke, etc ; XXVI (livre 3)司刑太常伯城陽縣開國侯劉祥道等議狀Si xing tai shang bai cheng yang xian kai guo hou liu xiang dao deng yi zhuang.Avis formulé par Liu Xiang dao et autres ; XXVII (livre 4)中御府少監護軍高藥尚等議狀Zhong yu fu shao jian hu jun gao yue shang deng yi zhuang.Avis formulé par Gao Yue shang et autres ; XXVIII (livre 4)內侍監給事王泉博士胡玄亮等議狀Nei shi jian ji shi wang quan bai shi hu xuan liang deng yi zhuang.Avis formulé par Wang Quan, Hu Xuan liang, etc ; XXIX (livre 4)奉常寺丞劉慶道主簿郝處傑等議狀Feng shang si cheng liu qing dao zhu bu he chu jie deng yi zhuang.Avis formulé par Liu Qing dao, He Chu jie, etc ; XXX (livre 4)詳刑寺承王千石司直張道遜等議狀Xiang xing si cheng wang qian shi si zhi zhang dao sun deng yi zhuang.Avis formulé par Wang Qian shi, Zhang Dao sun, etc ; XXXI (livre 4)司稼寺卿梁孝仁太倉署令趙行本等議狀Si jia si qing liang xiao ren tai cang shu ling zhao xing ben deng yi zhuang.Avis formulé par Liang Xiao ren, Zhao Xing ben, etc ; XXXII (livre 4)司稼寺卿梁孝仁太倉署令趙行本等議狀Wai fu si qing wei si zhai zhu bu jia ju deng yi zhuang.Avis formulé par Wei Si zhai, Jia Ju, etc ; XXXIII (livre 4)繕工監太監劉審禮監作上官突厥等議狀Shan gong jian tai jian liu shen li jian zuo shang guan tu jue deng yi zhuang.Avis formulé par Liu Shen li, Shang guan Tu jue, etc ; XXXIV (livre 4)司成館大司成令狐德棻等議狀Si cheng guan da si cheng ling hu de fen deng yi zhuang.Avis formulé par Ling hu De fen et autres ; XXXV (livre 4)司成寺館守宣業範義頵等議狀Si cheng si guan shou xuan ye fan yi jun deng yi zhuang.Avis formulé par Fan Yi jun et autres ; XXXVI (livre 4)左衛大將軍張延師等議狀Zuo wei da jiang jun zhang yan shi deng yi zhuang.Avis formulé par Zhang Yan shi et autres ; XXXVII (livre 4)右衛長史崔修業等議狀You wei zhang shi cui xiu ye deng yi zhuang.Avis formulé par Cui Xiu ye et autres ; XXXVIII (livre 4)左驍衛長史王玄策騎曹蕭灌等議狀Zuo xiao wei zhang shi wang xuan ce qi cao xiao guan deng yi zhuang.Avis formulé par Wang Xuan ce, Xiao Guan et autres ; XXXIX (livre 4)左 (autre titre 右) 武衛長史孝昌縣公徐慶等議狀Zuo (autre titre you) wu wei zhang shi xiao chang xian gong xu qing deng yi zhuang.Avis formulé par Xu Qing et autres ; XL (livre 4)右威衛將軍李晦等議狀You wei wei jiang jun li hui deng yi zhuang.Avis formulé par Li Hui et autres ; XLI (livre 4)左戎衛大將軍懷甯縣公杜君綽等議狀Zuo rong wei da jiang jun huai ning xian gong du jun chuo deng yi zhuang.Avis formulé par Du Jun tchho et autres ; XLII (livre 4)左金吾衛將軍上柱國開國侯權善才等議狀Zuo jin wu wei jiang jun shang zhu guo kai guo hou quan shan cai deng yi zhuang.Avis formulé par Quan Shan cai et autres ; XLIII (livre 4)右奉宸衛將軍辛弘亮等議狀You feng shen wei jiang jun xin hong liang deng yi zhuang.Avis formulé par Xin Hong liang et autres ; XLIV (livre 4)右春坊主事謝壽等議狀You chun fang zhu shi xie shou deng yi zhuang.Avis formulé par Xie Shou et autres ; XLV (livre 4)馭僕寺大夫王思泰丞牛玄璋等議狀Yu bu si da fu wang si tai cheng niu xuan zhang deng yi zhuang.Avis formulé par Wang Si tai, Niu Xuan zhang, etc ; XLVI (livre 4)萬年縣令源誠心等議狀Wan nian xian ling yuan cheng xin deng yi zhuang.Avis formulé par Yuan Cheng xin et autres ; XLVII (livre 4)長安縣尉崔道默等議狀Chang an xian wei cui dao mo deng yi zhuang ; autre titre : 長安縣丞王方則崔道默等議狀Chang an xian cheng wang fang ze cui dao mo deng yi zhuang.Avis formulé par Wang Fang ze, Cui Dao mo, etc ; XLVIII (livre 4)沛王府長史皇甫公義文學陳至德等議狀Pei wang fu zhang shi huang fu gong yi wen xue chen zhi de deng yi zhuang.Avis formulé par Huang fu Gong yi, Chen Zhi de, etc ; XLIX (livre 4)周王府長史源直心參軍元思敬等議狀Zhou wang fu zhang shi yuan zhi xin can jun yuan si jing deng yi zhuang.Avis formulé par Yuan Zhi xin, Yuan Si jing, etc ; L (livre 5)左威衛長史崔安都錄事沈玄明等議狀Zuo wei wei zhang shi Cui an du lu shi shen xuan ming deng yi zhuang.Avis formulé par Cui An du, Shen Xuan ming, etc ; LI (livre 5)右清道衛長史李洽等議狀You qing dao wei zhang shi li xia deng yi zhuang.Avis formulé par Li Xia et autres ; LII (livre 5)長安縣令張松壽等議狀Chang an xian ling zhang song shou deng yi zhuang.Avis formulé par Zhang Song shou et autres ; LIII (livre 5)中臺司列少常伯楊思玄司績大夫楊守拙等議狀Zhong tai si lie shao shang bo yang si xuan si ji da fu yang shou zhuo deng yi zhuang.Avis formulé par Yang Si Xuan, Yang Shou zhuo, etc ; LIV (livre 5)司平太常伯閻立本等議狀Si ping tai shang bo yan li ben deng yi zhuang.Avis formulé par Yan Li ben et autres ; LV (livre 5)蘭臺秘閣局郎中李淳風等議狀Lan tai bi ge ju lang zhong li shun feng deng yi zhuang.Avis formulé par Li Shun feng et autres ; LVI (livre 5)太常寺博士呂才等議狀Tai shang si bo shi lü cai deng yi zhuang.Avis formulé par Lü Cai et autres ; LVII (livre 5)司宰寺丞豆盧暕等議狀Si zai si cheng dou lu jian deng yi zhuang.Avis formulé par Dou Lu jian et autres ; LVIII (livre 5)司衛寺卿楊思儉等議狀Si wei si qing yang si jian deng yi zhuang.Avis formulé par Yang Si jian et autres ; LIX (livre 5)司馭寺丞韓處玄等議狀Si yu si cheng han chu xuan deng yi zhuang.Avis formulé par Han Chu xuan et autres ; LX (livre 5)詳刑寺少卿元大士等議狀Xiang xing si shao qing yuan da shi deng yi zhuang.Avis formulé par Yuan Da shi et autres ; LXI (livre 5)司（autre titre 同）文寺丞謝祐等議狀Si (autre titre tong) wen si cheng xie you deng yi zhuang.Avis formulé par Xie You et autres ; LXII (livre 5)內府監丞柳元貞等議狀Nei fu jian cheng liu yuan zheng deng yi zhuang.Avis formulé par Liu Yuan zheng et autres ; LXIII (livre 5)司津監李仁方等議狀Si jin jian li ren fang deng yi zhuang.Avis formulé par Li Ren fang et autres ; LXIV (livre 5)右武衛兵曹參軍趙崇素等議狀You wu wei bing cao can jun zhao chong su deng yi zhuang.Avis formulé par Zhao Chong su et autres ; LXV (livre 5)右戎衛長史李義範等議狀You rong wei zhang shi li yi fan deng yi zhuang.Avis formulé par Li Yi fan et autres ; LXVI (livre 5)右金吾衛將軍薛孤吳仁長史劉文琮等議狀You jin wu wei jiang jun xie gu wu ren zhang shi liu wen cang deng yi zhuang.Avis formulé par Xie Gu, Liu Wen tshong, etc ; LXVII (livre 5)右監門衛中郎將能玄逸等議狀You jian men wei zhong lang jiang xiong xuan yi deng yi zhuang.Avis formulé par Xiong Xuan yi et autres ; LXVIII (livre 5)端尹府端尹李寬等議狀Duan yin fu duan yin li khoan deng yi zhuang.Avis formulé par Li Khoan et autres ; LXIX (livre 5)左春坊中護賀蘭敏之贊善楊全節等議狀Zuo chun fang zhong hu he lan min zhi zan shan yang quan jie deng yi zhuang.Avis formulé par He lan Min zhi, Yang Quan jie, etc ; LXX (livre 5)右春坊中護郝處俊贊善楊思正等議狀You chun fang zhong hu he chu jun zan shan yang si zheng deng yi zhuang.Avis formulé par He Chu jun, Yang Si zheng, etc ; LXXI (livre 5)司更寺丞張約等議狀Si jing si cheng zhang yue deng yi zhuang.Avis formulé par Zhang Yue et autres ; LXXII (livre 5)左典戎衛倉曹王思九等議狀Zuo dian rong wei cang cao wang si jiu deng yi zhuang.Avis formulé par Wang Si jiu et autres ; LXXIII (livre 5)右典戎衛將軍斛斯敬則等議狀You dian rong wei jiang jun hu si jing ze deng yi zhuang.Avis formulé par Hu si Jing ze et autres ; LXXIV (livre 5)左司禦衛長史馬大師等議狀Zuo si yu wei zhang shi ma da shi deng yi zhuang.Avis formulé par Ma Da shi et autres ; LXXV (livre 5)右司禦衛長史崔崇業等議狀You si yu wei zhang shi cui chong ye deng yi zhuang.Avis formulé par Cui Chong ye et autres ; LXXVI (livre 5)左清道衛長史蔣眞胄等議狀Zuo qing dao wei zhang shi jiang zhen zhou deng yi zhuang.Avis formulé par Jiang Zhen zhou et autres ; LXXVII (livre 5)左崇掖衛長史竇尚義等議狀Zuo chong yi wei zhang shi dou shang yi deng yi zhuang.Avis formulé par Dou Shang yi et autres ; LXXVIII (livre 5)右崇掖衛長史李行敏等議狀You chong yi wei zhang shi li xing min deng yi zhuang.Avis formulé par Li Xing min et autres ; LXXIX (livre 5)左奉裕衛長史丘神靜等議狀Zuo feng yu wei zhang shi qiu shen jing deng yi zhuang.Avis formulé par Qiu Shen jing et autres ; LXXX (livre 5)右奉裕衛率韋懷敬等議狀You feng yu wei choai wei huai jing deng yi zhuang.Avis formulé par Wei Huai jing et autres ; LXXXI (livre 5)雍州司功劉仁叡等議狀Yong zhou si gong liu ren rui deng yi zhuang.Avis formulé par Liu Ren rui et autres ; LXXXII (livre 6)普光寺沙門玄範質拜議狀Pu guang si sha men xuan fan zhi bai yi zhuang.Examen de la question du salut des religieux, par le bonze Xuan fan, de Pu guang si ; LXXXIII (livre 6)中臺司禮太常伯隴西王博叉等執議奏狀Zhong tai si li tai shang bai long xi wang bai cha deng zhi yi zou zhuang.Rapport du prince de Long xi et autres ; LXXXIV (livre 6)今上停沙門拜君詔Jin shang ting sha men bai jun zhao.Ordre de l'empereur régnant suspendant l'obligation pour les bonzes de saluer le souverain ; LXXXV (livre 6)京邑老人程士顒等上請出家子女不拜親表Jing yi lao ren cheng shi yong deng shang qing chu jia zi nü bu bai qin biao.Rapport présenté par les vieillards Cheng Shi yong et autres, demandant que les religieux et religieuses ne saluent pas leurs parents ; LXXXVI (livre 6)直東臺馮神德上請依舊僧尼等不拜親表并上佛道先後事Zhi dong tai feng shen de shang qing yi jiu seng ni deng bu bai qin biao bing shang fo dao xian hou shi.Rapport présenté par Feng Shen de, demandant que les religieux et religieuses continuent à ne pas saluer leurs parents et exposant l'historique du bouddhisme ; LXXXVII (livre 6)西明寺僧道宣等重上榮國夫人楊氏請論不合拜親啟Xi ming si seng dao xuan deng chong shang rong guo fu ren yang shi qing lun bu he bai qin qi.Rapport de Dao xuan et autres religieux de Xi ming si, présentant de nouveau la prière et l'avis de la princesse de Rong, que les religieux ne doivent pas saluer leurs parents ; LXXXVIII (livre 6)大莊嚴寺僧威秀等上僧尼請依內教不拜父母表Da zhuang yan si seng wei xiu deng shang seng ni qing yi nei jiao bu bai fu mu biao.Rapport de Wei xiu et autres religieux de Da zhuang yan si, présentant la prière des religieux et religieuses qui demandent à ne pas saluer leurs père et mère ; LXXXIX (livre 6)玉華宮寺譯經沙門靜邁等上僧尼拜父母有損表Yu hua gong si yi jing sha men jing mai deng shang seng ni bai fu mu you sun biao.Rapport de Jing mai et autres religieux traducteurs, de Yu hua gong si, exposant qu'il y a inconvénient à ce que les religieux et religieuses saluent leurs père et mère ; XC (livre 6)襄州禪居寺僧崇拔上請僧尼父母同君上不受出家男女致拜表Xiang zhou shan ju si seng chong ba shang qing seng ni fu mu tong jun shang bu shou chu jia nan nü zhi bai biao.Rapport de Chong ba, religieux de Xiang zhou, demandant que les père et mère, comme les princes et supérieurs des religieux et religieuses, ne reçoivent pas le salut de leurs fils et filles entrés en religion

Chinois 6915

Contient : I性靈說Xing ling shuo ; IITian zhu zheng jiao yue zheng ; III推驗正道論Chui yan zheng dao lun ; IV造物主垂象略說Zao wu zhu chui xiang lüe shuo ; alias : 天主聖像略說Tian zhu sheng xiang lüe shuo ; V鴞鸞不並鳴說Xiao luan bu bing ming shuo ; VI靈魂道體說Ling hun dao ti shuo ; VII聖教規誡箴贊Sheng jiao gui jie zhen zan

Chinois 7379

Contient : I ; II天主聖教小引Tian zhu sheng jiao xiao yin ; III聖夢歌Sheng meng ge ; IV推驗正道論Chui yan zheng dao lun ; V醒世問編Xing shi wen bian ; VI二十五言Er shi wu yan ; VII高士傳Gao shi zhuan ; VIII永福天衢Yong fu tian qu

聖母領報會規Sheng mu ling bao hui gui.

Contient : I入會奉事聖母經Ru hui feng shi sheng mu jing ; II聖母領報會小引Sheng mu ling bao hui xiao yin ; III規條Gui tiao ; IV聖母領報會大赦規條Sheng mu ling bao hui da sha gui tiao ; V入會禮儀Ru hui li yi

Sample preparation and heavy metal determination by atomic spectrometry /

Microwave digestions of mercury in Standards Reference Material (SRM) coal samples with nitric acid and hydrogen peroxide in quartz vessels were compared with Teflon® vessel digestion by using flow injection cold vapor atomic absorption spectrometry. Teflon® vessels gave poor reproducibiUty and tended to deliver high values, while the digestion results from quartz vessel show good agreement with certificate values and better standard deviations. Trace level elements (Ag, Ba, Cd, Cr, Co, Cu, Fe, Mg, Mn, Mo, Pb, Sn, Ti, V and Zn) in used oil and residual oil samples were determined by inductively coupled plasma-optical emission spectrometry. Different microwave digestion programs were developed for each sample and most of the results are in good agreement with certified values. The disagreement with values for Ag was due to the precipitation of Ag in sample; while Sn, V and Zn values had good recoveries from the spike test, which suggests that these certified values might need to be reconsidered. Gold, silver, copper, cadmium, cobalt, nickel and zinc were determined by continuous hydride generation inductively coupled plasma-optical emission spectrometry. The performance of two sample introduction systems: MSIS™ and gas-liquid separator were compared. Under the respective optimum conditions, MSIS^"^ showed better sensitivity and lower detection limits for Ag, Cd, Cu, Co and similar values for Au, Ni and Zn to those for the gas-liquid separator.

Investigations into the determinations of hydride-forming elements

Analytical methods for the determination of trace amounts of germanium, tin and arsenic were established using hydride generation coupled with direct current plasma atomic emission spectrometry. A continuous gas flowing batch system for the hydride generation was investigated and was applied to the determination of germanium(Ge), tin(Sn), antimony(Sb) and lead(Pb) (Preliminary results suggest that it is also applicable to arsenic)As) ). With this system, the reproducibility of signals was improved and the determination was speeded up, compared with the conventional batch type hydride generation system. Each determination was complete within one minute. Interferences from a number of transition metal ions, especially from Pd(II), Pt(IV), Ni(II), Cu(II), Co(II), and Fe(II, III), have proven to be very serious under normal conditions, in the determination of germanium, tin, and arsenic. These interference effects were eliminated or significantly reduced in the presence of L-cystine or L-cysteine. Thus, a 10-1000 fold excess of Ni(II), Cu(II), Co(II), Fe(II), Pt(IV), Pd(II), etc. can be tolerated without interference, In the presence of L-cystine or L-cysteine, compared with absence of interference reducing agent. The methods for the determination of Ge, Sn, and As were examined by the analyses of standard reference materials. Interference effects from the sample matrix, for example, in transition metal-rich samples, copper, iron and steel, were eliminated by L-cystine (for As and Sn) and by LI cysteine (for Ge). The analysis of a number of standard reference materials gave excellent results of As and Sn contents in agreement with the certified values, showing there was no systematic interference. The detection limits for both germanium and tin were 20 pg ml- I . Preliminary studies were carried out for the determination of antimony and lead. Antimony was found to react with NaBH4, remaInIng from the previous determinations, giving an analytical signal. A reversed injection manner, i.e., injection of the NaBH4 solution prior to the analyte solution was used to avoid uncertainty caused by residual NaBH4 present and to ensure that an excess of NaB H4 was available. A solution of 0.4% L-cysteine was found to reduce the interference from selected transition metal ions, Co(II), Cu(II), Ni(II) and Pt(IV). Hydrochloric acid - hydrogen peroxide, nitric acid - ammonium persulphate, and potassium dichromate malic acid reaction systems for lead hydride generation were compared. The potassium dichromate - malic acid reaction medium proved to be the best with respect to reproducibility and minimal interference. Cu(II), Ni(II), and Fe(II) caused strong interference In lead determinations, which was not reduced by L-cysteine or Lcystine. Sodium citrate, ascorbic acid, dithizone, thiosemicarbazide and penicillamine reduced interferences to some extent. Further interference reduction studies were carried out uSIng a number of amino acids, glycine, alanine, valine, leucine and histidine, as possible interference reducing agents in the determination of germanium. From glycine, alanine, valine to leucine, the interference reduction effect in germanium determinations decreased. Histidine II was found to be very promising In the reduction of interference. In fact, histidine proved more efficient than L-cystine and L-cysteine In the reduction of interference from Ni(II) in the determination of germanium. Signal enhancement by easily ionized elements (EIEs), usually regarded as an interference effect in analysis by DCP-AES, was studied and successfully applied to advantage in improving the sensitivity and detection limit in the determination of As, Ge, Sn, Sb, and Pb. The effect of alkali and alkaline-earth elements on the determination of the above five hydride forming elements was studied. With the appropriate EIE, a signal enhancement of 40-115% was achieved. Linear calibration and good reproducibility were also obtained in the presence of EIEs. III

Mechanism of tocopherol transfer by human α-tocopherol transfer protein (α-hTTP)

Vitamin E is a well known fat soluble chain breaking antioxidant. It is a general tenn used to describe a family of eight stereoisomers of tocopherols. Selective retention of a-tocopherol in the human circulation system is regulated by the a -Tocopherol Transfer Protein (a-TIP). Using a fluorescently labelled a-tocopherol (NBD-a-Toc) synthesized in our laboratory, a fluorescence resonance energy transfer (FRET) assay was developed to monitor the kinetics of ligand transfer by a-hTTP in lipid vesicles. Preliminary results implied that NBD-a-Toe simply diffused from 6-His-a-hTTP to acceptor membranes since the kinetics of transfer were not responsive to a variety of conditions tested. After a series of trouble shooting experiments, we identified a minor contaminant, E coli. outer membrane porin F (OmpF) that co-purified with 6-His-a-hTTP from the metal affinity column as the source of the problem. In order to completely avoid OmpF contamination, a GST -a-hTTP fusion protein was purified from a glutathione agarose column followed by an on-column thrombin digestion to remove the GST tag. We then demonstrated that a-hTTP utilizes a collisional mechanism to deliver its ligand. Furthennore, a higher rate of a-tocopherol transfer to small unilamellar vesicles (SUV s) versus large unilamellar vesicles (LUV s) indicated that transfer is sensitive to membrane curvature. These findings suggest that ahTTP mediated a-Toc transfer is dominated by the hydrophobic nature of a-hTTP and the packing density of phospholipid head groups within acceptor membranes. Based on the calculated free energy change (dG) when a protein is transferred from water to the lipid bilayer, a model was generated to predict the orientation of a-hTTP when it interacts with lipid membranes. Guided by this model, several hydrophobic residues expected to penetrate deeply into the bilayer hydrophobic core, were mutated to either aspartate or alanine. Utilizing dual polarization interferometry and size exclusion vesicle binding assays, we identified the key residues for membrane binding to be F 165, F 169 and 1202. In addition, the rates of ligand transfer of the u-TTP mutants were directly correlated to their membrane binding capabilities, indicating that membrane binding was likely the rate limiting step in u-TTP mediated transfer of u-Toc. The propensity of u-TTP for highly curved membrane provides a connection to its colocalization with u-Toc in late endosomes.

Crystal Growth and Characterization of Li0.9Mo6O17

Purple bronze Li0.9Mo6O17 has attracted researchers for its low dimensionality and corresponding properties. Although it has been studied for nearly two decades, there are still some unsolved puzzles with this unique material. Single crystals of Li0.9Mo6O17 were grown using the temperature gradient flux technique in this research. The crystal growth was optimized by experimenting different conditions and good quality crystals were obtained. X-ray diffraction results have confirmed the right phase of the crystals. Resistivity measurements and magnetic susceptibility measurements were carried out, and anomalous electronic behaviors were found. All of the samples showed the metal-insulator transition near 20K, followed by behavior that differs from sample to sample: either superconducting, metallic or insulating behavior was observed below 2K. Li0.9Mo6O17 was considered as a quasi-one-dimensional crystal and also a superconducting crystal, which implies a dimensional crossover may occur at the metal-insulator transition. A two-band scenario of the Luttinger liquid model was used to fit the resistivity data and excellent results were achieved, suggesting that the Luttinger theory is a very good candidate for the explanation of the anomalous behavior of Li0.9Mo6O17. In addition, the susceptibility measurements showed Curie paramagnetism and some temperature independent paramagnetism at low temperature. The absence of any anomalous magnetic feature near 20K where the resistivity upturn takes place, suggests that a charge density wave mechanism, which has been proposed by some researchers, is not responsible for the unique properties of Li0.9Mo6O17.

Analysis of HIV-1 Vpr determinants responsible for cell growth arrest in Saccharomyces cerevisiae

Affiliation: Département de microbiologie et immunologie, Faculté de médecine, Université de Montréal

HIV-1 Vpr induces the K48-linked polyubiquitination and proteasomal degradation of target cellular proteins to activate ATR and promote G2 arrest

HIV-1 viral protein R (Vpr) induces a cell cycle arrest at the G2/M phase by a mechanism involving the activation of the DNA damage sensor ATR. We and others recently showed that Vpr performs this function by subverting the activity of the DDB1-CUL4A (VPRBP) E3 ubiquitin ligase. Vpr could thus act as a connector between the E3 ligase and an unknown cellular factor whose ubiquitination would induce G2 arrest. While attractive, this model is solely based on the indirect observation that some mutants of Vpr retain their interaction with the E3 ligase but fail to induce G2 arrest. Using a tandem affinity purification approach, we observed that Vpr interacts with ubiquitinated cellular proteins and that this association requires the recruitment of an active E3 ligase given that depletion of VPRBP by RNA interference or overexpression of a dominant-negative mutant of CUL4A decreased this association. Importantly, G2-arrest-defective mutants of Vpr in the C-terminal putative substrate-interacting domain displayed decreased association with ubiquitinated proteins. We also found that inhibition of proteasomal activity increased this association and that the ubiquitin chains were at least in part constituted of classical K48 linkages. Interestingly, inhibition of K48 polyubiquitination specifically impaired Vpr-induced phosphorylation of H2AX, an early target of ATR, but did not affect UV-induced H2AX phosphorylation. Overall, our results provide direct evidence that association of Vpr with the DDB1-CUL4A (VPRBP) E3 ubiquitin ligase induces the K48-linked polyubiquitination of yet-unknown cellular proteins resulting in their proteasomal degradation and ultimately leading to activation of ATR and G2 arrest.

Structural bioinformatics analysis of the family of human ubiquitin-specific proteases

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal.

Apprentissage dans une communauté de pratique : fansubbing et compétence linguistique

Fansub consiste à traduire et à sous-titrer les produits médiatiques étrangers tels que des films, des feuilletons ou des animes par des internautes bénévoles. Ce phénomène est aujourd’hui très répandu en Chine. Les amateurs s’organisent en groupes de fansub pour accomplir ce travail en collaboration. Les groupes de fansub se caractérisent par la virtualisation du lieu de travail, l’hétérogénéité des membres, la liberté de participation, la collaboration et la non-commercialité. Leur processus de travail et organisation est aussi particulier. Dans ce mémoire, je me suis intéressée à l’apprentissage des fansubbers, un aspect peu étudié dans la littérature sur le fansub. Le fansub a été abordé sous l’angle d’une communauté de pratiques pour comprendre comment les fansubbers acquièrent de nouvelles connaissances et améliorent leur compétence linguistique en sous-titrant les films de langue étrangère. L’étude est basée sur l’observation participative dans un groupe de fansub chinois-français, Fansub Yueyue. J’ai fait de l’observation participante auprès de ce groupe de fansub pour recueillir des traces du travail et des interactions entre les membres. Dix fansubbers du groupe ont aussi été interrogés. Les analyses ont indiqué que le groupe de fansub démontre les trois caractéristiques essentielles d’une communauté de pratique : l’entreprise commune, l’engagement mutuel et un répertoire partagé. Cet ensemble favorise l’existence du groupe ainsi que l’apprentissage des membres. Aussi, par l’analyse des erreurs fréquentes des fansubbers et leur autoévaluation, nous concluons que les pratiques de fansub aident les membres à améliorer leur compétence linguistique. L’apprentissage a lieu pendant le processus de travail de sous-titrage ainsi qu’à travers les interactions entre les membres ou avec des personnes hors de ce groupe.

Squeezed Coherent State Representation of Scalar Field and Particle Production in the Early Universe

The present work is an attempt to explain particle production in the early univese. We argue that nonzero values of the stress-energy tensor evaluated in squeezed vacuum state can be due to particle production and this supports the concept of particle production from zero-point quantum fluctuations. In the present calculation we use the squeezed coherent state introduced by Fan and Xiao [7]. The vacuum expectation values of stressenergy tensor defined prior to any dynamics in the background gravitational field give all information about particle production. Squeezing of the vacuum is achieved by means of the background gravitational field, which plays the role of a parametric amplifier [8]. The present calculation shows that the vacuum expectation value of the energy density and pressure contain terms in addition to the classical zero-point energy terms. The calculation of the particle production probability shows that the probability increases as the squeezing parameter increases, reaches a maximum value, and then decreases.

Squeezed Coherent State Representation of Scalar Field and Particle Production in the Early Universe

The present work is an attempt to explain particle production in the early univese. We argue that nonzero values of the stress-energy tensor evaluated in squeezed vacuum state can be due to particle production and this supports the concept of particle production from zero-point quantum fluctuations. In the present calculation we use the squeezed coherent state introduced by Fan and Xiao [7]. The vacuum expectation values of stressenergy tensor defined prior to any dynamics in the background gravitational field give all information about particle production. Squeezing of the vacuum is achieved by means of the background gravitational field, which plays the role of a parametric amplifier [8]. The present calculation shows that the vacuum expectation value of the energy density and pressure contain terms in addition to the classical zero-point energy terms. The calculation of the particle production probability shows that the probability increases as the squeezing parameter increases, reaches a maximum value, and then decreases.