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Depositional age and tectonic environment of the Gouap banded iron formations from the Nyong group,SW Cameroon:Insights from isotopic,geochemical and geochronological studies of drillcore samples

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Geoscience Frontiers 2021年第2期12卷 549-572页

作者： Landry Soh Tamehe Chongtao Wei Sylvestre Ganno Carlos Alberto Rosiere Jean paul Nzenti Chesther Gatse Ebotehouna Guanwen Lu Key Laboratory of CBM Resources and Reservoir Formation Process Chinese Ministry of EducationChina University of Mining and TechnologyXuzhouJiangsu221116China Department of Earth Sciences University of Yaounde IP.O.Box 812YaoundeCameroon Department of Geology Universidade Federal de Minas Gerais31270-901Belo HorizonteMinas GeraisBrazil School of Civil and Environmental Engineering University of Science and Technology BeijingBeijing 100083China

The discovery of the Gouap banded iron formations(BIFs)-hosted iron mineralization in the northwestern of the Nyong Group(Ntem Complex)in southwestern Cameroon provides unique insights into the geology of this *** this contribution,we firstly report detailed study of geochemistry,isotopic and geochronology of well preserved samples of the Gouap BIFs collected from diamond *** Gouap BIFs consist mainly of amphibole BIFs and amphibole-pyrite BIFs characterized by dominant Fe_(2)O_(3)+SiO_(2)contents and variable contents of cao,MgO and SO_(3),consistent with the presence of amphibole,chlorite,epidote and pyrite,formed during amphibolite facies metamorphism and overprinted hydrothermal *** amphibole–pyrite BIFs are typically enriched in trace and rare earth elements(REE)compared to the amphibole BIFs,suggesting the influence of detrital materials as well as secondary hydrothermal *** Post Archean Australian Shale(PAAS)-normalized REE–Y profiles of the Gouap BIFs display positive La,Eu anomalies,weak negative Ce anomalies,indicating a mixture of low-temperature hydrothermal fluids and relatively oxic conditions probably under relative shallow *** present here the first isotopic data of BIFs within the Ntem ***δ^(30)Si_(NBS28)values of the quartz from the Gouap BIFs vary from-1.5‰to-0.3‰and from-0.8‰to-0.9‰for the amphibole BIFs and amphibole–pyrite BIFs,*** quartz hasδ^(18)OV-SMOW values of 6.8‰–9.5‰(amphibole BIFs)and 9.2‰–10.6‰(amphibole–pyrite BIFs).The magnetite from the Gouap BIFs showsδ^(18)O values ranging from-3.5‰to-1.8‰and from-3‰to-1.7‰for the amphibole BIFs and amphibole–pyrite BIFs,***,the pyrite grains in the amphibole–pyrite BIFs displayδ34S values of 1.1‰–1.8‰.All isotopic data of the Gouap BIFs confirm that they might have precipitated from low-temperature hydrothermal fluids with detrital input distant from the volcanic *** to their geochemical and isotop

关键词： Gouap Banded iron formations Isotope geochemistry Zircon geochronology Ryacian period Brasiliano-Congo orogeny

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MHC class Ⅱ in renal tubules plays an essential role in renal fibrosis

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Cellular & Molecular Immunology 2021年第11期18卷 2530-2540页

作者： Yunfeng Zhou Zhaokang Luo Chenghui Liao Rong cao Zain Hussain Jie Wang Yeting Zhou Tie Chen Jie Sun Zhong Huang Baohua Liu Xiaoyan Zhang Youfei Guan Tuo Deng Department of Physiology Medical Research CenterShenzhen UniversityShenzhenChina Biological Therapy Institute Guangdong Provincial Key Laboratory of Regional Immunity and DiseasesDepartment of ImmunologyShenzhen UniversityShenzhenChina Department of Nephrology the First Affiliated Hospital of Shenzhen UniversityShenzhenChina paul L.Foster School of Medicine Texas Tech University Health Sciences CenterEl PasoTXUSA Department of Internal Medicine Shenzhen Guangming Maternity and Child Healthcare HospitalShenzhenChina School of Pharmaceutical Sciences Shenzhen UniversityShenzhenChina Department of Biochemistry and Molecular Biology Medical Research CenterShenzhen UniversityShenzhenChina Shenzhen Key Laboratory for Systemic Aging and Intervention National Engineering Research Center for Biotechnology(Shenzhen)Medical Research CenterShenzhen UniversityShenzhenChina Department of Physiology and Pathophysiology School of Basic Medical SciencesAdvanced Institute of Medical SciencesDalian Medical UniversityDalianChina National Clinical Research Center for Metabolic Diseases Department of Metabolism and EndocrinologyThe Second Xiangya Hospital of Central South UniversityChangshaChina Key Laboratory of Diabetes Immunology Ministry of EducationChangshaChina Metabolic Syndrome Research Center Clinical Immunology CenterCentral South UniversityChangshaChina

Immunomodulation has been considered a potential therapeutic approach for chronic kidney disease(CKD).Although it has been previously reported that CD4+T cells contribute to the development of renal fibrosis after UUO,the role of MHC class Ⅱ(MHCII)in UUO-induced renal fibrosis remains largely *** present study reports that the expressions of MHCII molecules in renal cortical tubules are upregulated in a mouse unilateral ureter obstruction(UUO)*** or renal tubule-specific ablation of MHCII significantly alleviates renal fibrosis following ***,renal expression of profibrotic genes showcased consistent reduction in both MHCII gene deficient mouse *** results demonstrate that renal tubular MHCII plays an important role in pathogenesis of renal fibrosis.

关键词： Chronic kidney disease Renal fibrosis MHCII Unilateral ureteral obstruction Folic acid

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Development of Novel Products from Agro-Wastes(Rice Husks)and Characterization in Kenya

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Journal of Environmental Science and Engineering(A) 2019年第1期8卷 26-35页

作者： Raphael Kungu paul Njogu Robert Kinyua Institute for Energy and Environmental Technology Jomo Kenyatta University of Agriculture and TechnologyNairobi 62000-00200Kenya Academy Division Jomo Kenyatta University of Agriculture and TechnologyNairobi 62000-00200Kenya

Rice growing is a popular agricultural activity in some areas in *** challenge is in the disposal of RH(Rice Husks).Rice production results in 20%RH as *** incineration of RH results in RH ash which is a source of valuable chemical *** ash is 87-97%silica,highly porous and light weight,with a very high external surface *** end product of RHA(Rice Husk Ash)after chemical treatment,sodium silicate,is a precious commodity that has myriad applications especially in detergent manufacture and soap *** objective was to determine the best conditions to synthesize silica from agro-wastes(RH)in *** yield(%SiO2)of the HCl(Hydrochloric Acid)leached RH at 500°C was the highest at 99.2%.Overall these conditions were the best in producing ***(%)removal of each metal is different due to its chemical form in *** removal percentage of K is especially *** 0.5 M HCl leaching followed by thermal treatment of 600°C gave the best increase in%silica *** same process removed the most metallic impurities(P2O5,K2O,cao,Mn and Zn).Leaching with 0.5 M HCl followed with thermal treatment of 500°C gave the best overall yield in%silica *** increase in temperature from 600°C slightly reduced the%silica dioxide *** 0.5 M HCl used in these trials was able to produce 99.17%silica content from the Mwea *** SiO2 obtained with the water washed RH sample is 97.37%as compared 99.17%(HCl-washed)and 99.02%(H2SO4(Sulphuric Acid)-leached).The FTIR(Fourier Transform Infrared Spectroscopy)spectra indicates HCl leaching avails more silica content than H2SO4 leaching.

关键词： RH conversion acid leaching silicate sodium silicate ideal conditions

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Fermi Surface Nesting with Heavy Quasiparticles in the Locally Noncentrosymmetric Superconductor CeRh_(2)As_(2)

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Chinese Physics Letters 2024年第9期41卷 107-121页

作者： Yi Wu Yongjun Zhang Sailong Ju Yong Hu Yanen Huang Yanan Zhang Huali Zhang Hao Zheng Guowei Yang Evrard-Ouicem Eljaouhari Baopeng Song Nicholas C.Plumb Frank Steglich Ming Shi Gertrud Zwicknagl Chao cao Huiqiu Yuan Yang Liu Center for Correlated Matter and School of Physics Zhejiang UniversityHangzhou 310058China Institute for Advanced Materials Hubei Normal UniversityHuangshi 435002China Swiss Light Source Paul Scherrer InstitutCH-5232 Villigen PSISwitzerland Institut for Mathematische Physik 38106 BraunschweigGermany Max Planck Institute for Chemical Physics of Solids 01187 DresdenGermany Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China State Key Laboratory of Silicon Materials Zhejiang UniversityHangzhou 310058China

The locally noncentrosymmetric heavy fermion superconductor CeRh_(2)As_(2) has attracted considerable interests due to its rich superconducting phases,accompanied by possible quadrupole density wave and pronounced antiferromagnetic *** understand the underlying physics,here we report measurements from highresolution angle-resolved *** results reveal fine splittings of the conduction bands related to the locally noncentrosymmetric structure,as well as a quasi-two-dimensional Fermi surface(FS)with strong 4f *** FS shows signs of nesting with an in-plane vector q_(1)=(π/α,π/α),which is facilitated by the heavy bands nearˉ𝑋arising from the characteristic conduction-X *** FS nesting provides a natural explanation for the observed antiferromagnetic spin fluctuations at(π/α,π/α),which might be the driving force for its unconventional *** experimental results can be reasonably explained by density functional theory plus dynamical mean field theory calculations,which can capture the strong correlation *** study not only provides spectroscopic signature of the key factors underlying the field-induced superconducting transition,but also uncovers the critical role of FS nesting and lattice Kondo effect in the underlying magnetic fluctuations.

关键词： symmetric Fermi conduction

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《保尔与薇吉妮》在中国的变异研究

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外国文学研究 2017年第1期39卷 100-107页

作者：冯欣曹顺庆中国人民大学文学院北京师范大学

贝纳丹·德·圣-皮埃尔的《保尔与薇吉妮》(paul et Virginie)是法国18世纪末极为轰动的一部畅销小说,得到了诸如文学史家朗松、"比较文学之父"维尔曼等人的赞誉;巴尔扎克、福楼拜、梅里美、莫泊桑、都德等著名作家也都曾在自己的作品... 详细信息

贝纳丹·德·圣-皮埃尔的《保尔与薇吉妮》(paul et Virginie)是法国18世纪末极为轰动的一部畅销小说,得到了诸如文学史家朗松、"比较文学之父"维尔曼等人的赞誉;巴尔扎克、福楼拜、梅里美、莫泊桑、都德等著名作家也都曾在自己的作品中谈及这部小说。1914年,这部小说被林纾、王庆骥翻译为《离恨天》,从此开启了在中国的传播与接受的历程。然而百余年间,这部小说却在中国遇到了始料未及的冷遇:为数极少的译本、作者甚至没有出现在某些中国学者所编著的《法国文学史》中。这部在原产地曾备受追捧的作品在中国"受冷"正是跨文明研究中文学变异的典型个案。笔者通过分析该文学文本在实际文化交流中产生的文学接受现象,以及实证性跨语际变异研究,试图对这一典型的文学变异现象给出解释说明。

关键词：贝纳丹·德·圣-皮埃尔《保尔与薇吉妮》林纾《离恨天》文学变异

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帕博利珠单抗联合化疗作为中国初治转移性鳞状NSCLC患者的一线治疗方案：KEYNOTE-407中国队列研究

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中国肺癌杂志 2022年第5期25卷 363-376页

作者：程颖 Li ZHANG Jie HU Donglin WANG Chengping HU Jianying ZHOU Lin WU Lejie cao Jiwei LIU Helong ZHANG Hong SUN Ziping WANG Hongjun GAO Yuping SUN Ben LI Xiaohan HU paul SCHWARZENBERGER Luis PAZ-ARES 张良吉林省肿瘤医院胸部肿瘤内科 Respiratory Medicine Department Peking Union Medical College Hospital Department of Pulmonary Medicine Zhongshan Hospital Fudan University Department of Oncology Chongqing Cancer Hospital Department of Respirology and Critical Care Medicine Xiangya Hospital Central South University Department of Respiratory Diseases The First Affiliated Hospital of Zhejiang University Department of Thoracic Medicine Hunan Cancer Hospital Department of Respiration The First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Hospital) Department of Oncology The First Affiliated Hospital of Dalian Medical University Department of Oncology Tang Du Hospital The Fourth Military Medical University Department of Oncology The First Affiliated Hospital of Xi'An Jiaotong University Department of Thoracic Medical Oncology Beijing Cancer Hospital Department of Pulmonary Oncology Affiliated Hospital of Academy of Military Medical Sciences MSD China Merck & Co. Inc. Department of Medical Oncology Hospital Universitario 12 de Octubre

背景与目的在随机双盲的3期临床研究KEYNOTE-407中，与安慰剂联合化疗相比，帕博利珠单抗联合化疗显著改善了初治转移性鳞状非小细胞肺癌（non-small cell lung cancer, NSCLC）患者的生存结局。本研究报道了纳入K EY NOTE-407全球研... 详细信息

背景与目的在随机双盲的3期临床研究KEYNOTE-407中，与安慰剂联合化疗相比，帕博利珠单抗联合化疗显著改善了初治转移性鳞状非小细胞肺癌（non-small cell lung cancer, NSCLC）患者的生存结局。本研究报道了纳入K EY NOTE-407全球研究和中国扩展研究的中国患者的临床结局。方法将K EY NOTE-407全球研究（NCT02775435）和中国扩展研究（NCT03875092）中招募的中国患者，按1:1比例随机分配，给予35个周期的帕博利珠单抗或安慰剂联合4个周期的卡铂和紫杉醇或白蛋白-紫杉醇治疗。双重主要终点是由盲态独立中心根据实体瘤疗效评价标准（1.1版）评估的总生存期（overall survival, OS）和无进展生存期（progression-free survival, PFS）。结果共125例患者接受了随机分组（帕博利珠单抗+化疗，n=65；安慰剂+化疗，n=60）。截至2020年9月30日，研究中位随访时间（范围）为28.1(25.1-40.9)个月。帕博利珠单抗+化疗较安慰剂+化疗显著改善了患者的OS[风险比（hazard ratio, HR）=0.44,95%可信区间（confidence interval,CI):0.28-0.70]和PFS(HR=0.35, 95%CI:0.24-0.52)。接受帕博利珠单抗+化疗或安慰剂+化疗患者的2年OS率分别为56.9%和31.7%,2年PFS率分别为24.2%和3.3%，两组治疗相关的3级-5级不良事件发生率分别为81.5%和81.7%。与基线相比，帕博利珠单抗+化疗改善了患者第18周的总体健康状况/生活质量评分（最小二方差均值差异=7.6,95%CI:1.5-13.7），并延长了咳嗽、胸痛或呼吸困难等症状恶化的时间（HR=0.50, 95%CI:0.28-0.89）。结论与安慰剂+化疗相比，帕博利珠单抗+化疗延长了中国转移性鳞状NSCLC患者的生存期，且毒性可控，并维持甚至改善了健康相关生存质量。上述研究结果支持帕博利珠单抗+化疗作为该人群的一线治疗方案。

关键词：程序性死亡1阻断剂帕博利珠单抗化疗鳞状非小细胞肺癌中国

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业主和建筑客户何时开始用ISO 19650系列?

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土木建筑工程信息技术 2019年第4期11卷 133-136页

作者：保罗·希尔科克曹春莉(译) 英国先锋培训咨询有限公司莱奇沃思英国SG61GJ 英国绿鹤咨询有限公司沃特福德英国WD2478G

ISO 19650系列是使用建筑信息模型(BIM)时信息管理的新国际标准,由国际公认的BIM专家组基于英国1192系列的制定。英国1192系列在降低风险、提高可预测性和实现更好的业务成果方面已在世界上证明了其成功。本文回答了建筑业经常提出的"... 详细信息

ISO 19650系列是使用建筑信息模型(BIM)时信息管理的新国际标准,由国际公认的BIM专家组基于英国1192系列的制定。英国1192系列在降低风险、提高可预测性和实现更好的业务成果方面已在世界上证明了其成功。本文回答了建筑业经常提出的"何时开始使用ISO 19650"的问题。

关键词：建筑信息模型 ISO 19650 信息管理 BIM级别 BS 1192 PAS 1192-2 PAS 1192-3

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Coexistence of Polaronic States and Superconductivity in Iron-Pnictide Compound Ba_2Ti_2Fe_2As_4O

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Chinese Physics Letters 2018年第5期35卷 119-122页

作者： Li-Yuan Rong Xun Shi Pierre Richard Yun-Lei Sun Guang-Han cao Xiang-Zhi Zhang Jun-Zhang Ma Ming Shi Yao-Bo Huang Tian Qian Hong Ding Ren-Zhong Tai Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 School of Physics University of Chinese Academy of Sciences Beijing 100190 Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 Collaborative Innovation Center of Quantum Matter Beijing 100084 Department of Physics Zhejiang University Hangzhou 310027 paul Scherrer Institut Swiss Light Source Villigen PSI CH-5232 Switzerland

The electronic structure of iron-pnictide compound superconductor Ba_2Ti_2Fe_2As_4O, which has metallic intermediate Ti_2O layers, is studied using angle-resolved photoemission spectroscopy. The Ti-related bands show a‘peak-dip-hump＇ line shape with two branches of dispersion associated with the polaronic states at temperatures below around 120 K. This change in the spectra occurs along with the resistivity anomaly that was not clearly understood in a previous study. Moreover, an energy gap induced by the superconducting proximity effect opens in the polaronic bands at temperatures below T_c（~21 K）. Our study provides the spectroscopic evidence that superconductivity coexists with polarons in the same bands near the Fermi level, which provides a suitable platform to study interactions between charge, lattice and spin freedoms in a correlated system.

关键词： Ti As Coexistence of Polaronic States and Superconductivity in Iron-Pnictide Compound Ba2Ti2Fe2As4O Fe Ba

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Geochemistry and zircon U–Pb ages of the Paleoproterozoic ultramafic rocks of the Mbi Valley, Boali area, Central African Republic

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Acta Geochimica 2022年第3期41卷 515-535页

作者： Evine Laure Njiosseu Tanko Prince Emilien Danguene Philomene Nga Essomba Tsoungui Sylvestre Ganno Jonas Didero Takodjou Wambo Bertin Guy Takam Tchoupe Gus Djibril Kouankap Nono Timoleon Ngnotue Boniface Kankeu Jean Biandja Jean paul Nzenti Department of Earth Sciences University of DschangP.O.Box 67DschangCameroon Department of Earth Sciences University of BanguiP.O.Box 908BanguiCentral African Republic Department of Mining Engineering and Mineral Processing School of Mines and Petroleum IndustriesUniversity of MarouaP.O.Box 08Kaélé-MarouaCameroon Department of Earth Sciences University of YaoundéIP.O.Box 812YaoundéCameroon Department of Geology HTTCUniversity of BamendaP.O.Box 39BambiliBamendaCameroon Institute for Geological and Mining Researches(IGMR) P.O.Box 4110YaoundéCameroon

This paper investigates the geochemistry of bulk rock and infers the petrogenesis of ultramafic rocks in the Boali Precambrian terrane in Mbi Valley,in the North of the Central African Republic(CAR).The studied rocks comprise coarse primary olivine and orthopyroxene relics(dominant phase),magnesio-hornblende,magnetite,and ***-rock analysis indicates low SiO_(2)(average of 43.14 wt%)and high MgO(19.84–26.98 wt%)contents and their Mg number(Mg#)ranges from 74 to ***(526–865 ppm),Cr(1500–3680 ppm)***(Na_(2)O-K_(2)O)-FeO-MgO)and ACM(Al_(2)O_(3)-cao-MgO)ternary diagrams have revealed that the studied samples correspond to arc-related ultramafic ***-normalized REE plots display an increasing trend from La to Sm(CeN/SmN:0.74–1.81),weak negative to no Eu(Eu/Eu*=0.72–1.05)and strong negative Ce(Ce/Ce*=0.33–0.98)*** mantle normalized of multi-element diagrams exhibit LREE enrichment and large ion lithophile elements(LILE)relative to high field strength elements(HFSE),and notable negative anomalies in *** suggests the generation of the parent melt by slab dehydration and wedge melting *** addition,incompatible trace element composition and ratios assumed that the source magma had an enhanced mantle source associated with a prominent influence of continental *** of mantle wedge by plate-dehydrated,LILE-rich fluids and the incorporation of sediments derived from subduction explain the enhancement of the *** major and trace element compositions jointly with the tectonic reconstruction of this region and LA-ICP-MS U–Pb data on zircon constrain the emplacement age at ca.2099 Ma in a continental margin arc setting involving subduction of an oceanic plate beneath the continental lithosphere,dehydration of the slab and mantle wedge *** result intimate that the remnants of Paleoproterozoic oceanic crust or subduction event and subsequent basins closure extended from

关键词： Atlantic supercontinent Central African Republic Ultramafic cumulate LILE-enriched fluids Arc setting

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破解伯希和之谜——论菲利普·弗朗德兰的《伯希和传》

现代传记研究

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现代传记研究 2023年第2期 95-106页

作者：曹蕾南京晓庄学院文学院

法国作家菲利普·弗朗德兰的《伯希和传》是法国著名探险家和汉学家伯希和的首部标准传记。该传以还原历史和历史人物的真相为目标,尝试解开伯希和这一颇具争议人物身上的诸多谜团,对伯希和进行了有一定深度的解释和较为客观公允的评价... 详细信息

法国作家菲利普·弗朗德兰的《伯希和传》是法国著名探险家和汉学家伯希和的首部标准传记。该传以还原历史和历史人物的真相为目标,尝试解开伯希和这一颇具争议人物身上的诸多谜团,对伯希和进行了有一定深度的解释和较为客观公允的评价。《伯希和传》历史资料丰富,对历史人物的传记写作、敦煌学研究、西方近现代殖民主义研究等都有较大的参考价值。

关键词：伯希和传记身份动机殖民主义

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