关键词： MVT Pb-Zn-Ba   Fluid inclusions   C-O-S-Pb isotopes   Oriental High Atlas   Morocco  

摘要： The Bou Dahar Pb-Zn-Ba (+/- Sr) is hosted in the Lower and Middle Liassic carbonate platform in the oriental High Atlas of Morocco. The paragenetic sequence includes quartz-pyrite-melnicovite-sphalerite-galena-calcite-barite +/- fluorite- +/- celestite. Fluid-inclusion studies were conducted on sphalerite (early mineralizing stage) and barite, and celestite (late mineralizing stage). These studies reveal two end-member fluids, a hot (similar to 143 degrees C) and saline fluid (similar to 23 wt.% NaCl eq.) and a cooler (<50 degrees C) and diluted fluid (similar to 5 wt.% NaCl eq.). Based on fluid-inclusion and C-O-S isotope studies, a conclusion is reached that the Bou Dahar ore deposits were formed by the mixing of two fluid a diluted, SO42--rich fluid, and an O-18-enriched basinal brine that carried Pb, Zn, and Ba. The sulfur required for the precipitation of sulfides was generated by the thermochemical sulfate reduction of dissolved sulfate (SO42-) of the Mesozoic seawaters, and delivered to the site of ore deposition. The sulfur of sulfate minerals was derived directly from these dissolved Sat The Pb isotope compositions are homogenous with Pb-206/Pb-204, Pb-207/Pb-204, and Pb-208/Pb-204 ratios ranging from 18.124 to 18.183, 15.630 to 15.634, and 38325 to 38.440 respectively. This Pb isotope composition is indicative of an upper crust and orogene reservoirs as the source of lead and other metals. The emplacement of mineralization occurred during the Eocene-Miocene Alpine orogeny, and tectonic burial and compression were the driving forces behind the circulation of the orogenic-brines. These ore-forming fluids migrated, along thrusting regional E-W and NE-SW deep-seated faults, to the confined carbonate-Liassic reservoir. Published by Elsevier B.V.

关键词： REPUBLICANISM   NONFICTION  

摘要： C–H functionalization is a rapidly expanding field of chemistry that has recently begun to play a prominent role in the field of synthetic organic chemistry. As members of the Center for Selective C–H Functionalization (CCHF), our goal is to leverage the methods developed within the CCHF to showcase the power of C–H functionalization through novel approaches to natural products and pharmaceutical compounds. With this in mind, we became quite drawn to the indoxamycin family of natural products, particularly indoxamycin F. Isolated in 2009, we found the unique, bowl-like topology of the 6,5,5-tricyclic indoxamycin core to be an exciting proving ground for showcasing the power of C–H functionalization in a complex synthetic setting. Our approach targeted three key carbon-carbon bonds that could be formed using methods developed within the CCHF. Ultimately, we were able to forge the six-membered ring of the indoxamycins through utilizing two C–H functionalizations, enabling a rapid synthesis of a benzo-fused indoxamycin core. Additionally, the intriguing chemical structure of Pfizer’s marketed HIV entry inhibitor, maraviroc (UK-427,857), provided another opportunity to showcase the power of C–H functionalization in a pharmaceutical context. Our approach took advantage of a simple –SO2– group to act as both a traceless directing group for C–H amination and an activating group. This strategy resulted in a successful, four-step synthesis of maraviroc from cheap and commercially available 3-phenyl-1-propanol.

关键词： 欧洲杯   葡萄牙  

摘要： 法国欧洲杯决赛,葡萄牙加时1-0击败东道主法国,首次获得欧洲杯冠军!第23分钟,C罗因伤离场。法国全场占优,第92分钟,吉尼亚克小角度打门击中立柱弹出,错失绝杀。第109分钟,替补登场的埃德利用身体优势拼出空间,随后远射直窜死角。

关键词： 运动员  

ISBN: (纸本)9787501253326

摘要： 本书是一本记载C罗的职业生涯全过程及精彩瞬间的经典画册, 内容包括C罗在各个时期的霸气表现, 特别是2016年勇夺个人第三座欧冠时的情景。对广大球迷来说, 他不仅是赛场之王, 更是极具气质的霸道总裁。C罗身兼诸多符号, 无论场上场下他从来都是最闪光人物, 从十二大锐视角带领大家更深地了解C罗。

关键词： 灵魂   足球   触发   套装   体育精神   训练   小球   球星   故事   比赛  

摘要： 耐克于近期发布了由克里斯蒂亚诺·罗纳尔多主演的全新短片《灵魂互换》.短片时长5分57秒,包括C罗在内的多位球星出演.片子通过讲述C罗与小球童在比赛中相撞互换灵魂后的一些故事来传递一种体育精神:刻苦的训练和后天的努力是成功的必备条件.

关键词： 罗姆   朗斯   托马斯   人性弱点   研究著作   心理活动   心理教师   心理模式   灵与肉   瑞典人  

摘要： 托马斯·特朗斯特罗姆的诗《C大调》,挺有意思。开头:"幽会后他走向大街,雪花飞舞。他们睡在一起的时候,冬天已经到来。"简单的叙述,但有两个词引人遐想,"幽会"和"冬天"。"幽会"?不像夫妻之会,应是情人之会。"冬天"?这情人之情似不妙也!接下来,是"他"的感觉。"夜闪烁白色",与"雪花"相应,"他欢快地疾走",与"冬天"相反。"城市在倾斜",欢快得就要忘形,"笑脸从身边闪过",人人皆着我之情感色调。而下一句,是这首诗最光彩夺目的一句:"人人都在翻起的领子背后微笑"。

关键词： oxygen   Angstrom   crystal structure  

摘要： The complex : C21H18N2O5Zn, Monoclinic, P2(1)/n, a = 12.4476(15) angstrom, b - 9.1446(11) angstrom, c - 17.420(2) angstrom, beta - 98.012(2), V = 1963.6(4) angstrom(3), R-gt(F) = 0.0370, wR(ref)(F-2) = 0.0867;Z = 4;T = 296(2) K.