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10篇 您的检索式:作者名="Yu Wenchang"
    题名 作者 年代 出处 被引量
1The Yanshanian Granites and Associated Mo-Polymetallic Mineralization in the Xiangcheng-Luoji Area of the Sanjiang-Yangtze Conjunction Zone in Southwest China显示文摘The Xiangcheng-Luoji area is located in the conjunction of the southern part of the 'Sanjiang' mineralization belt and the west margin of Yangtze craton. The geological studies were carried out to know the Indosinian large porphyry Cu polymetallic deposits. Recent studies revealed that the area existed in the superposition of Late Yanshanian acidic intrusive rock belt and developed Mo-Cu polymetallic mineralization where promising exploration results have been achieved. Through the systematic study of geochronology, formation age of the Renlin Mo-minieralization monzogranite is 81.7±1.1 Ma. Re-Os dating results concentrate on 82.34±1.2–88.27±1.23 Ma for the model ages of molbdenite of Tongchanggou Mo deposits, average age is 85 ± 2 Ma where seven data points constitute a good isochron which shows that they were the same period products of mineralization. Geochemical features shown that the rocks have a high content of SiO 2(66.59–77.36wt%), alkaline-rich(K2O=2.68–6.08wt%; Na2O=0.50–4.91wt%; K2O/Na2 O ratios are 0.71–5.56, where average ratio of 1.89) and have aluminum–rich features(Al2O3 10.38–15.15wt%) with σ values less than 3.3. Which indicate that they belong to the high-K calc-alkali to shoshonite series. Geochemistry of Yanshanian intrusions shows that rocks are enrich in LREE with obvious negative δEu anomalies, enrichment of trace elements like, LILE elements(Rb, Th, Ba) with a relative loss of Ba, and loss of high field strength elements(Nb, Ta, P, Ti) and HREE elements. The granite genetic classification diagram shows that the granites belong to A-type granite and formatted in syn-collision tectonic environment. Meanwhile, the Yanshanian granites also inherited the characteristics of island arc environment which formed in the process of crustal melting caused by upwelling of asthenospheric substances in the extensional tectonic background. The process of partial melting existed substances from the deep(lower crust or upper mantle) which have been added. In the Xiangcheng-Luoji area, monzogranite and granodiorite porphyry bodies are widely developed Mo polymetallic mineralization, the deep porphyry mineralization have great potential for geological prospecting.LI Wenchang YIN Guanghou YU Haijun LIU Xuelong 2014Acta Geologica Sinica(English Edition)2014,88,6:20
2Zircon U-Pb Ages of the Granodioritic Porphyry in the Laba Molybdenum Deposit,Yunnan,SW China and Its Geological Implication显示文摘Geza 岛弧是一个著名矿化作用集中区域,在西藏的高原的东方边缘的 Sanjiang 领域的部分。在最近的年里,几迟了的 Yanshanian 花岗石的侵入和联系存款在这个区域被发现了,在桃花源,区域是其一最大 Laba 铝存款。以前的研究建议预定 Laba 矿化作用是 85 ±2 妈。然而, granodioritic 斑岩的年龄仍然保持未知。在这研究,从忍受辉钼矿的 granodioritic 斑岩的三件样品锆石标明日期的 LA-ICP-MS U-Pb 与 85.00 ± 的产生日期一起被进行了0.23 妈(MSWD = 0.58 ) , 85.28 ±0.28 妈(MSWD = 1.12 ) ,并且 84.83 ±0.26 妈(MSWD = 0.79 ) 分别地,显示这些 granodioritic 斑岩在 ∼85 附近在迟了的 Yanshanian 形成了妈。与矿化作用的地质的特征结合了,时间地, Laba 存款遗传上空间地与 granodioritic 斑岩被联系。另外, Laba 存款的年龄与另外的迟了的 Yanshanian 侵入和矿化作用一致,建议矿化作用可能在在迟了的白垩纪期间的 intra 板 extensional 环境下面被产生。YU Haijun LI Wenchang YIN Guanghou LU Yingxiang CAO Xiaomin HUANG Dingzhu DONG Tao ZHANG Youming 2014Acta Geologica Sinica(English Edition)2014,88,4:14
3Morphological,Molecular and Pathogenicity of Alternaria gaisen Associated with Leaf Brown-Spot on‘Gonggan’Mandarin in China显示文摘[Objective]This paper was to identify the pathogen of leaf brown-spot on‘gonggan’mandarin(Citrus reticulate var.gonggan)in Zhaoqing,Guangdong Province.[Method]The pathogen was determined based on sequence analysis of ITS,endoPG,tef1,gapdh,Alt a1,rpb2 and opa10-2 genes;the morphological characteristics were recorded on PDA and PCA;and its pathogenicity on excised and intact host leaves of citrus‘gonggan’was tested.[Result]A detailed description of Alternaria gaisen was obtained based on morphological,molecular and pathogenic characterization,which was the causal agent of brown-spot disease on leaves of‘gonggan’mandarin orchard trees in Zhaoqing,Guangdong,China.[Conclusion]This study provides a scientific basis for the effective control of leaf brown-spot on‘gonggan’mandarin.Cui Mengjiao Sein Lai Lai Aung Wei Xin Yu Zhihe Mo Yanwei Yu Wenchang Deng Jianxin Li Qili 2020Plant Diseases and Pests2020,11,5:2
4Percutaneous transhepatic biliary drainage for obstructive jaundice caused by metastatic gastric cancer: efficacy and complications显示文摘我们的学习的目的是评估胆汁的排水(PTBD ) 由变形胃的癌症作为妨碍的黄疸的辩解的治疗引起了的经皮的 transhepatic 的复杂并发症的功效和发生的目的。方法医院记录为 32 个连续病人被考察,胆汁的阻塞由变形胃的癌症引起了在我们在 2004 年 10 月和 2010 年 4 月之间的机构经历了 PTBD。病人(23 男性和 9 女性) 变老从 35 ~ 72 年。在 PTBD 前并且在在 PTBD 以后的一个月以内的肝的功能的索引被比较。复杂并发症和相应治疗的发生也被记录。结果阻塞的水平被定义为远侧的胆汁管(在肝核的水平以外) 在 22 个病人(组 1 ) 和在 10 个病人(组 2 ) 的肝核。在 PTBD 以后的胆汁的系统的成功的解压缩被超过 30% 基线价值的全部的 bilirubin 减少定义。成功率为组 1 是 100%(22/22 ) , 70%(7/10 ) 为组 2,和 90.6%(29/32 ) 为所有病人。处于成功率在之间的差别组 1 和组 2 是重要的(P = 0.024 ) 。浆液 TBIL,中高音,和著名计算机生产厂商显著地减少了从(292.8 ????? 呒 ????????????? 慔慧獬湩 ????????????????? ″ ? 匠牵楶楶? 僚 ??? 吗??Wenchang Yu Kongzhi Zhang Shiguang Chen Mingzhi Hao 2011The Chinese-German Journal of Clinical Oncology2011,10,3:1
5Supramolecufar block copoIymers: Graphene oxide composites for memo ry device applieations显示文摘Yu An Dih Liu Chengliang Chen Wenchang 2012Chem Commun2012,48,3:1
6Hepatic arterial infusion of oxaliplatin plus raltitrexed in unresectable hepatocellular carcinoma with or without portal vein tumour thrombosis显示文摘Background Unresectable hepatocellular carcinoma(HCC)has a poor prognosis.According to the HCC management guidelines in China,the standard treatment of Barcelona Clinic Liver Cancer(BCLC)stage B or C HCC with portal vein tumour thrombosis(PVTT)is chemoembolization.However,some patients with BCLC stage B or C HCC with PVTT respond poorly to chemoembolization.We aimed to compare tumour responses and survival benefits between patients with unresectable HCC with or without PVTT.Methods We reviewed 119 consecutive patients with unresectable HCC with PVTT(n=67)and without PVTT(n=52)who underwent hepatic arterial infusion of oxaliplatin plus raltitrexed between January 2018 and April 2021.Overall survival,progression-free survival,tumour responses,and adverse events were compared between the groups.Results There were no significant between-group differences in the objective response rates and median progression-free survival.The median overall survival was significantly longer in the group without PVTT than in that with PVTT(17.0 vs 10.4 months,respectively;P=0.024).Conclusion Hepatic arterial infusion of oxaliplatin plus raltitrexed may be efficacious in patients with unresectable HCC with or without PVTT.Shiguang Chen Wenchang Yu Kongzhi Zhang Weifu Liu Xiaolong Wang Chuanben Chen 2022Gastroenterology Report2022,10,1:1
7A randomized controlled trial of low-dose recombinant human interferons α-2b nasal spray to prevent acute viral respiratory infections in military recruits显示文摘LuLu Gao Shouyi Yu Qing Chen Zhaojun Duan Jie Zhou Chen Mao Dexian Yu Wenchang Zhu Jun Nie Yunde Hou 2010Vaccine2010,,28:1
8Synthesis and characterization of organic-inorganic hybrid thin films from poly(acrylic) and monodispersed colloidal silica显示文摘YU Yangyen CHEN Chingyi CHEN Wenchang 2003Polymer2003,44,3:1
9Concise syntheses of 13-methylprotoberberine and 13-methyltetrahydroprotoberberine alkaloids显示文摘The concise syntheses of eight 13-methylprotoberberine(13-MePB)and eight enantioenriched 13-methyltetrahydroprotoberberine(13-MeTHPB)alkaloids have been achieved in a tactically modular fashion.This synthetic work features a one-pot metal-free Pictet-Spengler/Friedel-Crafts hydroxyalkylation/dehydration/oxidation sequence and a following highly enantioselective Ir-catalyzed hydrogenation.Given such brevity and modularity,our developed synthetic route would be greatly beneficial to the efficient syntheses of existing natural products and new fully synthetic variants of 13-MePB and 13-MeTHPB family.Wenchang Chen Xiaofen Yi Hongmin Qu Yu Chen Pei Tang Fener Chen 2022Chinese Chemical Letters2022,33,12:0
10Computational fluid dynamics modeling of rapid pyrolysis of solid waste magnesium nitrate hydrate under different injection methods显示文摘This study developed a numerical model to efficiently treat solid waste magnesium nitrate hydrate through multi-step chemical reactions.The model simulates two-phase flow,heat,and mass transfer processes in a pyrolysis furnace to improve the decomposition rate of magnesium nitrate.The performance of multi-nozzle and single-nozzle injection methods was evaluated,and the effects of primary and secondary nozzle flow ratios,velocity ratios,and secondary nozzle inclination angles on the decomposition rate were investigated.Results indicate that multi-nozzle injection has a higher conversion efficiency and decomposition rate than single-nozzle injection,with a 10.3%higher conversion rate under the design parameters.The decomposition rate is primarily dependent on the average residence time of particles,which can be increased by decreasing flow rate and velocity ratios and increasing the inclination angle of secondary nozzles.The optimal parameters are injection flow ratio of 40%,injection velocity ratio of 0.6,and secondary nozzle inclination of 30°,corresponding to a maximum decomposition rate of 99.33%.Wenchang Wu Kefan Yu Liang Zhao Hui Dong 2024Chinese Journal of Chemical Engineering2024,66,2:0
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