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暴露不同晶面WO_(3)的简单合成及光催化性能
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作者 李百裕 朱蓓蓓 +2 位作者 陈玲霞 王璐 周杰 《化学研究与应用》 CAS 北大核心 2024年第6期1318-1323,共6页
以二水钨酸钠和水合偏钨酸铵为前驱体,在没有模板剂和助剂的条件下,采用简单水热法合成暴露不同晶面的WO_(3)纳米短棒。通过XRD、TEM、FT-IR和UV-visDRS等手段对合成样品的晶型、微观结构、表面官能团和光吸收性能进行表征;通过可见光... 以二水钨酸钠和水合偏钨酸铵为前驱体,在没有模板剂和助剂的条件下,采用简单水热法合成暴露不同晶面的WO_(3)纳米短棒。通过XRD、TEM、FT-IR和UV-visDRS等手段对合成样品的晶型、微观结构、表面官能团和光吸收性能进行表征;通过可见光下降解罗丹明B考察样品的光催化活性。结果表明:以二水钨酸钠为前驱体所合成的WO_(3)(WO_(3)-ST)沿[001]轴生长,主要暴露(100)和(010)晶面;以水合偏钨酸铵为前驱体所合成的WO_(3)(WO_(3)-AT)沿[110]轴生长,主要暴露(001)晶面,并且拥有比前者更宽的可见光吸收范围和更窄的禁带宽度;可见光下对罗丹明B的降解速率为为0.018min^(-1),为前者的18倍。 展开更多
关键词 wo_(3) 水热法 晶面 光催化
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基于不同Bi2WO6形貌下光催化降解四环素性能研究
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作者 于洋 郎春秋 +1 位作者 杜刚 王岩 《通化师范学院学报》 2024年第6期47-51,共5页
该文以Bi(NO3)3·5H2O和Na2WO4·2H2O为原料通过水热法合成Bi2WO6,重点研究通过改变水合加热时间和溶液酸碱性,不同合成条件对Bi2WO6产物形貌的影响.借助扫描电子显微镜(SEM)对Bi2WO6形貌进行分析.实验结果显示,溶液酸碱性和加... 该文以Bi(NO3)3·5H2O和Na2WO4·2H2O为原料通过水热法合成Bi2WO6,重点研究通过改变水合加热时间和溶液酸碱性,不同合成条件对Bi2WO6产物形貌的影响.借助扫描电子显微镜(SEM)对Bi2WO6形貌进行分析.实验结果显示,溶液酸碱性和加热时间均对Bi2WO6的形貌有较大影响,水合加热时间也对其形貌有很大的影响.此外,通过在可见光下降解四环素(TC),探讨了不同合成条件对催化剂性能的影响.实验结果表明,酸碱性会破坏Bi2WO6的结构,进而降低其光催化性能.当水合加热时间为25 h时,Bi2WO6的降解效率最高,降解效果约为50%. 展开更多
关键词 Bi2wo6 水热法 SEM 光催化降解
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WUSCHEL-related homeobox1(WOX1)regulates vein patterning and leaf size in Cucumis sativus 被引量:10
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作者 Hu Wang Huanhuan Niu +5 位作者 Chuang Li Guoyan Shen Xiaofeng Liu Yiqun Weng Tao Wu Zheng Li 《Horticulture Research》 SCIE 2020年第1期434-448,共15页
In plants,WUSCHEL-related homeobox1(WOX1)homologs promote lamina mediolateral outgrowth.However,the downstream components linking WOX1 and lamina development remain unclear.In this study,we revealed the roles of WOX1 ... In plants,WUSCHEL-related homeobox1(WOX1)homologs promote lamina mediolateral outgrowth.However,the downstream components linking WOX1 and lamina development remain unclear.In this study,we revealed the roles of WOX1 in palmate leaf expansion in cucumber(Cucumis sativus).A cucumber mango fruit(mf)mutant,resulting from truncation of a WOX1-type protein(CsWOX1),displayed abnormal lamina growth and defects in the development of secondary and smaller veins.CsWOX1 was expressed in the middle mesophyll and leaf margins and rescued defects of the Arabidopsis wox1 prs double mutant.Transcriptomic analysis revealed that genes involved in auxin polar transport and auxin response were highly associated with leaf development.Analysis of the cucumber mf rl(round leaf)double mutant revealed that CsWOX1 functioned in vein development via PINOID(CsPID1)-controlled auxin transport.Overexpression of CsWOX1 in cucumber(CsWOX1-OE)affected vein patterning and produced‘butterfly-shaped’leaves.CsWOX1 physically interacted with CsTCP4a,which may account for the abnormal lamina development in the mf mutant line and the smaller leaves in the CsWOX1-OE plants.Our findings demonstrated that CsWOX1 regulates cucumber leaf vein development by modulating auxin polar transport;moreover,CsWOX1 regulates leaf size by controlling CIN-TCP genes. 展开更多
关键词 SIZE wuS SHAPED
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Wu Shihong: ALegendary Woman
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作者 Yang Fu 《China's Foreign Trade》 1999年第12期7-10,共4页
A Junior college graduate in Englush, shebecame a legendary figure when she wasappointed general manager of Microsoft(China) Co. She quit the company, however,after 16 months. And then she chose to join aChinese enter... A Junior college graduate in Englush, shebecame a legendary figure when she wasappointed general manager of Microsoft(China) Co. She quit the company, however,after 16 months. And then she chose to join aChinese enterprise-the TCL Group. she hasaroused enormous interest across the country. 展开更多
关键词 CO wu Shihong In ALegendary woman
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RETRACTED:Exploring the Mechanism of Wu Ling San plus Flavor for the Treatment of Diabetic Macular Edema Based on Network Pharmacology and Molecular Docking Techniques
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作者 Kunmao Ke Xiaoyun Jiang +5 位作者 Yun Zhang Yekai Zhou Jian Zhao Junbiao Zhang Yanli Liu Meixia An 《Chinese Medicine》 CAS 2022年第3期33-50,共20页
Short Retraction Notice The paper does not meet the standards of “Chinese Medicine ". This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE&#... Short Retraction Notice The paper does not meet the standards of “Chinese Medicine ". This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. The aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused. Editor guiding this retraction: Prof. Maythem Saeed (EiC of CM) The full retraction notice in PDF is preceding the original paper, which is marked "RETRACTED". 展开更多
关键词 Diabetic Macular Edema Diabetic Retinopathy wu Ling San plus Flavor Alkaloids ALIPHATIC Network Pharmacology Molecular Docking
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WU YI:CHINA UNDERGO THREE MAJOR SHIFTS IN OPENING TO THE OUTSIDE WORLD AFTER WTO ACCESSION
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《China's Foreign Trade》 2002年第2期4-4,共1页
关键词 WTO wu YI
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Research on the Impact of Western Art upon Chinese Artists Wu Guanzhong and Zao Wou-ki in the 20th Century
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作者 Cheng Cheng 《Contemporary Social Sciences》 2021年第1期142-155,共14页
World War II led to a reallocation of many countries’political roles.Some nations got stronger after the war while others lost their past advantages and became less powerful.During the post-war period,many genres of ... World War II led to a reallocation of many countries’political roles.Some nations got stronger after the war while others lost their past advantages and became less powerful.During the post-war period,many genres of art schools were established,first in Europe followed by America and then Asia,resulting in a collision between China and the West as Western art served to inspire Chinese art.This study examines the works of Wu Guanzhong and Zao Wou-ki and discusses how post-war Western art had influenced Chinese art and what changes had been brought to artistic styles of Chinese art. 展开更多
关键词 post-war Chinese art Western art wu Guanzhong Zao wou-ki
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World Integrated Medicine Master Wu Yiling
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作者 Zou Jianhua Academician Wu Yiling 《World Journal of Integrated Traditional and Western Medicine》 2019年第1期1-6,共6页
INTRODUCTION OF WU YILING Academician Wu Yiling (1949-), is the doctoral supervisor and academician of the Chinese Academy of Engineering. He is also the chief physician, professor, chief scientist of the National 973... INTRODUCTION OF WU YILING Academician Wu Yiling (1949-), is the doctoral supervisor and academician of the Chinese Academy of Engineering. He is also the chief physician, professor, chief scientist of the National 973 Plan, supervisor of Post-doctoral Researcher Center of Ministry of Human Resources and Social Security with special government allowances of the State Council, member of the National Committee of Chinese People's Political Consultative Conference, executive director of Chinese Association of Integrative Medicine, vice president of Hebei Association of Integrative Medicine, Editor in Chief of World Journal of Integrated traditional and Western Medicine and associate editor of Hebei Journal of Traditional Chinese Medicine ,Editor in Chief of Chinese Journal of Difficult and Complicated Cases. 展开更多
关键词 world INTEGRATED MEDICINE MASTER wu Yiling
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基于WOS数据库的特殊医学用途配方食品研究的可视化分析
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作者 高明波 韩婷 《中国食物与营养》 2024年第5期29-35,共7页
目的:基于Web of Science(WOS)数据库分析特殊医学用途配方食品研究的文献,以明确国际上该领域研究热点与前沿。方法:通过对WOS核心数据库进行主题词字段检索,时间设置为建库至2022年。采用文献计量学方法及利用CiteSpace软件,对国家/... 目的:基于Web of Science(WOS)数据库分析特殊医学用途配方食品研究的文献,以明确国际上该领域研究热点与前沿。方法:通过对WOS核心数据库进行主题词字段检索,时间设置为建库至2022年。采用文献计量学方法及利用CiteSpace软件,对国家/地区、机构、期刊及关键词等文献特征进行统计分析。结果:共获取有效文献121篇,包括论著100篇、综述21篇。研究起始年限为1998年,1998-2015年间年平均发文量少于2篇,自2016年以后发文量和文献被引频次有了明显增长,并在2022年到达峰值。研究国家主要分布于欧洲地区,核心研究机构包括欧洲食品安全局、都柏林大学和雅盖隆大学等。载文量排名第1位的期刊为EFSA JOURNAL杂志(n=56);高被引文献中的核心内容涉及特殊婴幼儿配方食品与母乳低聚糖的研究。研究热点内容:规范特殊医学用途配方食品(FSMP)的应用与发展(关键词:oral nutritional supplements、enteral nutrition、functional food),以及评估新食品原料在FSMP应用的安全性(关键词:novel food、food supplement、human milk oligosaccharide、food additive)。研究趋势为:新食品、婴儿、配方、食品补充剂。结论:近年来,FSMP研究的关注度成增长趋势,新食品原料在FSMP应用与评估是未来的研究趋势,我国应探索基于此方面的研究,深入挖掘FSMP的发展与应用潜力。 展开更多
关键词 特殊医学用途配方食品 CITESPACE 研究热点与趋势 Web of Science
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World Integrated Medicine Master Wu Xianzhong
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作者 Zou Jianhua Cao Xixi Zhou Ajian 《World Journal of Integrated Traditional and Western Medicine》 2019年第4期1-9,共9页
INTRODUCTION OF WU XIANZHONG Academician Wu Xianzhong (born on August 28th,1925) graduated from Shenyang Medical College in 1948.In 1959,he participated in the traditional Chinese medicine (TCM) courses held by Tianji... INTRODUCTION OF WU XIANZHONG Academician Wu Xianzhong (born on August 28th,1925) graduated from Shenyang Medical College in 1948.In 1959,he participated in the traditional Chinese medicine (TCM) courses held by Tianjin University of Traditional Chinese Medicine for doctors of western medicine.In 1961,he graduated and was awarded the golden medal by National Health Commission.He has been specialized in surgery of integrated Chinese and western medicine since the early 1960s and works as one of the pioneers in the field of integrated Chinese and western medicine in China.He established Tianjin Hospital of Integrated Traditional Chinese and Western Medicine and the Institute of Acute Abdominal Diseases in Integrated Chinese and Western Medicine.From 1964 to 1977,he served as Director of Nankai Hospital.From 1978 to 1994,he served as Deputy Director,Director and Honorary President of Tianjin Medical College (known as Tianjin Medical University nowadays). 展开更多
关键词 world INTEGRATED TRADITIONAL Chinese medicine(TCM) wu Xianzhong
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The Inner Split in Genetics of Wu Colloquial Expression“[hÃɲ^(33) paʔ^(3) lÃɲ^(33) tÃɲ^(31)]”
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作者 SONG Jia-fu 《Journal of Literature and Art Studies》 2024年第9期794-801,共8页
“[ã^(44) kã^(44) paʔ^(5) lã44 tã^(53)]”(Chinese characters transcription“昂更八冷打”)is an colloquial expression in Tongxiang dialect of Suzhou-Jiaxing-Huzhou Sub-branch,Taihu Branch,Wu.It describes an awkward... “[ã^(44) kã^(44) paʔ^(5) lã44 tã^(53)]”(Chinese characters transcription“昂更八冷打”)is an colloquial expression in Tongxiang dialect of Suzhou-Jiaxing-Huzhou Sub-branch,Taihu Branch,Wu.It describes an awkward state with unfinished tasks.Its similar expressions can be found in other regions of Taihu Branch,including Yixing,Changzhou,Shaoxing and Ningbo,usually serving as“all”,while the expression“[hÃɲ^(33) paʔ^(3) lÃɲ^(33) tÃɲ^(31)]”(“亨八冷打”)in Shanghai Sub-branch indicates“the remaining parts”when used alone.“[hÃɲ^(33) paʔ^(3) lÃɲ^(33) tÃɲ^(31)]”stands for“all”only when followed by a word with meaning of“adding together”.In this paper,it is concluded and deduced from other similar morphemes that the contradictory connotations are related to an“inner split”process of an original word.Considering similar morphemes in other Chinese dialects(including Cantonese,Hakka,Jianghuai and Min),the following analysis proposes three possible original expressions and correlating trajectories of this inner phonetic-semantic split process,and selects a most credible way based on the rhyming dictionary and previous reconstructive models of ancient Chinese phonology.This presumptive analysis indicates that a broader“split and derivate”process generating new morphemes exists widely in Sinitic dialects as a natural company of phonetic features in Chinese language flow. 展开更多
关键词 wu Middle-ancient Chinese phonology Chinese dialect inner split
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The Relationship between Dachuan Baijie Muddymen Dance and“Da Xia”and“Da Wu”
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作者 MA Lei 《Journal of Literature and Art Studies》 2024年第9期765-768,共4页
Dachuan Baijie Muddymen Dance is a kind of dance with local characteristics.From its dance movements and prop usage,it should be related to ancient Ba people’s war dance,as well as to recorded ancient dances such as... Dachuan Baijie Muddymen Dance is a kind of dance with local characteristics.From its dance movements and prop usage,it should be related to ancient Ba people’s war dance,as well as to recorded ancient dances such as“Da Xia”and“Da Wu”. 展开更多
关键词 Muddymen Dance Ba people war dance “Da Xia” “Da wu
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Anti-inflammatory effects of Tao Hong Si Wu Tang in mice with lung cancer and chronic obstructive pulmonary disease
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作者 Guo-Li Wang Yan-Ling Xu +4 位作者 Ke-Ming Zhao Ai-Feng Sui Li-Na Wang Hu Deng Ge Wang 《World Journal of Clinical Oncology》 2024年第9期1198-1206,共9页
BACKGROUND Lung cancer(LC)combined with chronic obstructive pulmonary disease(COPD)is a common combination of comorbidities.Anti-inflammation and modulation of oxidative/antioxidative imbalance may prevent COPD-induce... BACKGROUND Lung cancer(LC)combined with chronic obstructive pulmonary disease(COPD)is a common combination of comorbidities.Anti-inflammation and modulation of oxidative/antioxidative imbalance may prevent COPD-induced LC,and are also crucial to the treatment of LC combined with COPD.Modern studies have shown that Tao Hong Si Wu Tang(THSW)has vasodilatory,anti-inflammatory,anti-fatigue,anti-shock,immunoregulatory,lipid-reducing,micronutrient-supplementing,and anti-allergy effects.AIM To observe the effects of THSW on COPD and LC in mice.METHODS A total of 100 specific pathogen-free C57/BL6 mice were randomly divided into five groups:Blank control group(group A),model control group(group B),THSW group(group C),IL-6 group(group D),and THSW+IL-6 group(group E),with 20 mice in each group.A COPD mouse model was established using fumigation plus lipopolysaccharide intra-airway drip,and an LC model was replicated by in situ inoculation using the Lewis cell method.RESULTS The blank control group exhibited a clear alveolar structure.The model control and IL-6 groups had thickened alveolar walls,with smaller alveolar lumens,interstitial edema,and several inflammatory infiltrating cells.Histopathological changes in the lungs of the THSW and THSW+IL-6 groups were less than those of the model control group.The serum IL-1β,IL-6,and TNF-αlevels and IL-6R,JAK,p-JAK,STAT1/3,p-STAT1/3,FOXO,p-FOXO,and IL-7R expression levels in lung tissues of mice in the rest of the groups were significantly higher than those of the blank control group(P<0.01).Compared with the model control group,the IL-6 group demonstrated significantly higher levels for the abovementioned proteins in the serum and lung tissues(P<0.01),and the THSW group had significantly higher serum IL-1β,IL-6,and TNF-αlevels and IL-7R expression levels in lung tissues(P<0.01)but significantly decreased IL-6R,JAK,p-JAK,STAT1/3,p-STAT1/3,FOXO,p-FOXO,and IL-7R levels(P<0.01).CONCLUSION THSW reduces the serum IL-1β,IL-6,and TNF-αlevels in the mouse model with anti-inflammatory effects.Its antiinflammatory mechanism lies in inhibiting the overactivation of the JAK/STAT1/3 signaling pathway. 展开更多
关键词 Tao Hong Si wu Tang Anti-inflammatory Chronic obstructive pulmonary disease Lung cancer Traditional Chinese medicine
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基于亚控WOS云操作系统实现水厂的数字孪生以及生产管理系统
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作者 冯小海 赵平 程松涛 《软件》 2024年第9期46-48,51,共4页
在新一轮科技革命和产业变革的浪潮中,数字孪生技术正逐渐成为推动水厂智能化转型的关键驱动力。作为一种前沿的数字化技术,数字孪生通过构建物理实体的虚拟镜像,实现对实际生产过程的精准映射、实时监控和优化控制。而亚控WOS云操作系... 在新一轮科技革命和产业变革的浪潮中,数字孪生技术正逐渐成为推动水厂智能化转型的关键驱动力。作为一种前沿的数字化技术,数字孪生通过构建物理实体的虚拟镜像,实现对实际生产过程的精准映射、实时监控和优化控制。而亚控WOS云操作系统则为实现水厂的数字孪生提供了强大的技术支撑。基于该平台,水厂能够建立起高度逼真的虚拟模型,并与实际生产系统进行实时交互,从而实现对水处理工艺的全流程管控,提高生产效率,保障水质安全。因此,本文将聚焦亚控WOS云操作系统在水厂数字孪生和生产管理中的应用,以期为水务行业的数字化变革提供有益启示。 展开更多
关键词 亚控woS云操作系统 水厂 数字孪生 生产管理系统
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基于WOS和CNKI数据库的汽车设计中外研究对比
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作者 黄驰涵 《时代汽车》 2024年第6期149-151,共3页
文章为了使中华文化更加深入地融入到未来汽车设计中,基于WOS和CNKI数据库,利用Citespace软件将中外汽车设计的发展历程、发展热点和发展趋势进行对比。比较了关键词、作者、科研机构、共现时区视图等因素对于汽车设计领域的影响,文章... 文章为了使中华文化更加深入地融入到未来汽车设计中,基于WOS和CNKI数据库,利用Citespace软件将中外汽车设计的发展历程、发展热点和发展趋势进行对比。比较了关键词、作者、科研机构、共现时区视图等因素对于汽车设计领域的影响,文章总结了国内外汽车设计理念,并提出了对中国汽车设计的几点建议。 展开更多
关键词 汽车设计 知识图谱 聚类分析 woS CNKI
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Preparation of Corncob-Like WO3 Nanomaterials and Their Photocatalytic Treatment of Toluene
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作者 Jianhai Wang Lu Lu +2 位作者 Bing Xu Hongfeng Xu Hongwen Liu 《Journal of Materials Science and Chemical Engineering》 2024年第2期84-93,共10页
Corn rod-like WO<sub>3</sub> nanomaterials were successfully synthesized by a simple hydrothermal method. The morphology, structure and optical absorption properties of the prepared samples were characteri... Corn rod-like WO<sub>3</sub> nanomaterials were successfully synthesized by a simple hydrothermal method. The morphology, structure and optical absorption properties of the prepared samples were characterized by SEM, XRD, FTIR and UV-Vis-DRS. The WO<sub>3</sub> materials were corn rod-like morphology with about 800 nm for length and 150 nm for diameter, especially there were plenty of corn particles (about 20 nm) on the surface of corn rods. The X-ray diffraction peaks of the products corresponded with WO<sub>3</sub> standard card, and the characteristic peak of W-O bond was found in the infrared spectrum. The absorption band edge of the products was about 480 nm, indicating their potential visible-light-induced photocatalytic activity. In situ FTIR technology research showed that the prepared WO<sub>3</sub> nanomaterials had visible photocatalytic activity to gas-phase toluene. After a photocatalytic reaction for 8 hours toluene was effectively degraded, and carboxylic acid and aldehyde could be regarded as the intermediate products, and CO<sub>2</sub> was produced as the final product during the reaction process. 展开更多
关键词 wo3 Nanomaterials Visiblelight Photocatalytic Degradation TOLUENE In Situ FTIR
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WO-1对成骨细胞的生物学效应研究 被引量:13
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作者 陈旭 杨志明 +1 位作者 解慧琪 李胜富 《中国修复重建外科杂志》 CAS CSCD 北大核心 2005年第10期822-825,共4页
目的了解WO-1在体外环境中对人成骨细胞增殖、分化的影响,为骨组织工程学研究提供更多的方法. 方法采用培养人胚成骨细胞,以生长曲线和3H-TdR法分析WO-1与成骨细胞生物学效应的量效关系,在最佳作用浓度下,以接种细胞克隆形成率,流式细... 目的了解WO-1在体外环境中对人成骨细胞增殖、分化的影响,为骨组织工程学研究提供更多的方法. 方法采用培养人胚成骨细胞,以生长曲线和3H-TdR法分析WO-1与成骨细胞生物学效应的量效关系,在最佳作用浓度下,以接种细胞克隆形成率,流式细胞技术分析细胞周期,透射电镜观察细胞形态学,了解WO-1对细胞活性和细胞增殖的影响;以ALP活性检测,3H-Proline掺入实验,放射免疫法测骨钙素合成及I型胶原和骨钙素mRNA的表达等,从蛋白质和mRNA两个水平观察WO-1对细胞功能的影响. 结果 WO-1在高浓度时对人胚成骨细胞增殖有抑制作用,低浓度时对人胚成骨细胞增殖有促进作用,最佳作用浓度8 μg/ml,在0.25~8 μg/ml浓度范围内存在量效关系.在8 μg/ml WO-1作用下,实验组人胚成骨细胞接种克隆形成率增加,克隆体积增大;群体倍增时间明显缩短,电镜下见细胞器较对照组发达;而ALP活性、Ⅰ型胶原合成、骨钙素合成等,在蛋白质及mRNA两个水平均有增加,且与对照组比较,差异有统计学意义(P<0.05). 结论低浓度WO-1,可促进体外培养的人胚成骨细胞活性及增殖,加强细胞合成Ⅰ型胶原、骨钙素等基质的功能,可用作成骨细胞增殖及分化的促进剂. 展开更多
关键词 组织工程 成骨细胞 wo—1 生物学
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WU多瘤病毒在中国浙江地区的发现与鉴定 被引量:15
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作者 林峰 郑美云 +7 位作者 李桦 郑昌华 饶高峰 郑敏巧 吴峰 曾爱平 李旭阳 侯建毅 《病毒学报》 CAS CSCD 北大核心 2008年第1期69-71,共3页
WU polyomavirus,which was firstly discovered in 2007,is a new human polyomavirus belonging to Polyomaviridae and containing circular double-stranded genomic DNA.In this study,the 278 clinical sputum specimens from chi... WU polyomavirus,which was firstly discovered in 2007,is a new human polyomavirus belonging to Polyomaviridae and containing circular double-stranded genomic DNA.In this study,the 278 clinical sputum specimens from children under 5 years old were collected from Wenzhou Medical College affiliated Wenling First Hospital,Zhejiang Province.Based on identification assay of WU polyomavirus previously reported,a WU polyomavirus was identified from clinical samples successfully,the positive rate was 0.4%.The sequences of PCR products were identical to that of VP2 gene and large T antigen gene derived from WU polyomavirus reported.The above results strongly suggested that the WU polyomavirus isolated was firstly found in Chinese children with acute lower respiratory tract infections.This study provides a firm basis for further research of WU polyomavirus. 展开更多
关键词 wu多瘤病毒 鉴定
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Na_2WO_4-WO_3-ZnO体系熔盐镀钨 被引量:11
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作者 马瑞新 周传华 +2 位作者 李国勋 王超群 孙丽虹 《中国有色金属学报》 EI CAS CSCD 北大核心 2000年第5期715-718,共4页
对Na2 WO4 WO3 ZnO体系熔盐镀钨工艺进行了详细研究 ,得到了获得金属钨镀层的工艺条件。结果表明 :在空气气氛中 ,当氧化钨的浓度为 1 5%~ 30 %时 ,于 850~ 950℃能得到金属钨镀层且镀层表面平整 ;当其它条件都相同时 ,在铜基体上获... 对Na2 WO4 WO3 ZnO体系熔盐镀钨工艺进行了详细研究 ,得到了获得金属钨镀层的工艺条件。结果表明 :在空气气氛中 ,当氧化钨的浓度为 1 5%~ 30 %时 ,于 850~ 950℃能得到金属钨镀层且镀层表面平整 ;当其它条件都相同时 ,在铜基体上获得钨镀层比钼基体上所需的温度略高一些 ;扫描电镜照片显示钨镀层与钼基体之间有明显分界面 ,元素线扫描结果证实镀层与钼基体间扩散层厚度仅为 2 .5μm ,基本不形成扩散层 ;不同电流密度下所获得的钨镀层X射线衍射表明镀层中存在织构。 展开更多
关键词 Na2wo4-wo4-wo3-ZnO熔盐 电镀 镀层 镀钨
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超临界流体中MoO_3与WO_3溶解度实验探讨 被引量:8
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作者 龚庆杰 於崇文 +1 位作者 岑况 王玉荣 《岩石学报》 SCIE EI CAS CSCD 北大核心 2005年第1期240-244,共5页
超临界地质流体以其独特的性质对金属成矿元素具有超强的萃取、层析和搬运能力,在热液矿床成矿机制研究中对揭示成矿物质的源、流和汇起着特殊和重要作用。本文利用分析纯H2MoO4在高温下脱水制备了MoO3(白色斜方晶系),在冷封式高压釜中... 超临界地质流体以其独特的性质对金属成矿元素具有超强的萃取、层析和搬运能力,在热液矿床成矿机制研究中对揭示成矿物质的源、流和汇起着特殊和重要作用。本文利用分析纯H2MoO4在高温下脱水制备了MoO3(白色斜方晶系),在冷封式高压釜中实验测定了417℃超临界条件下,MoO3在纯水中的溶解度分别为7.3(29MPa)、14.2(45MPa)、21.6(55MPa)、27.7(78MPa)、32.5(100MPa)、和34.2(150MPa)mmol/l,热液中钼的存在形式为H2MoO4。依据前人的实验方案,补充测定了WO3在4.0%NaCl水溶液中于450%条件下的溶解度,其值分别为27.51(50MPa)和30.52(100MPa)mmol/l。结合前人研究结果发现,MoO3、WO3的溶解度在临界区域内具有超临界现象,在超临界条件下其溶解度与石英的超临界溶解度行为基本相似,表现为溶解度随体系温度和压力的升高而增大,这对揭示岩浆热液型和石英脉型钨、钼矿床的形成机制具有重要指导作用。 展开更多
关键词 超临界流体 MoO2 wo3 溶解度
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