检索结果-南通市图书馆

Gold Resources Potential Assessment in Eastern Kunlun Mountains of China Combining Weights-of-evidence Model with GIS Spatial Analysis Technique

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2010年第5期20卷 461-470页

作者： HE Binbin chen cuihua LIU Yue Institute of Geo-spatial Information Science and Technology University of Electronic Science and Technology of China Chengdu 610054 China College of Geosciences Chengdu University of Technology Chengdu 610059 China

Resources potential assessment is one of the fields in geosciences,which is able to take great advantage of GIS technology as a substitution of traditional working *** gold resources potential in the eastern Kunlun Mountains,Qinghai Province,China was assessed by combining weights-of-evidence model with GIS spatial analysis *** the data sets used in this paper were derived from an established multi-source geological spatial database,which contains geological,geophysical,geochemical and remote sensing *** multi-class variables,i.e.,structural intersection,Indosinian k-feldspar granite and regional fault,were used in proximity analysis to examine their spatial association with known gold deposits.A prospectivity map was produced by weights-of-evidence model based on seven binary evidential maps,all of which had passed a conditional independence *** study area was divided into three target zones of high potential,moderate potential and low potential areas,among which high potential areas and moderate potential areas accounted for 20% of the total area and contained 32 of the 43 gold *** results show that the gold resources potential assessment in the eastern Kunlun Mountains has a higher precision.

关键词： weights-of-evidence model mineral resources potential assessment eastern Kunlun Mountains spatial analysis conditional independence

Chemical composition of oscillatory zoned garnets from the largescale Mengya'a Pb–Zn skarn deposit: implications for fluid physicochemical conditions and formation

在线全文

学校读者我要写书评

暂无评论

Acta Geochimica 2022年第3期41卷 536-550页

作者： Yan Zhang cuihua chen Yulong Yang Xuhao Kang Ying Gu Xiang Lai Xiaojie chen School of Earth Sciences Chengdu University of TechnologyChengdu 610059SichuanChina

The Mengya’a Lead–zinc deposit is a large skarn deposit in the north of the eastern segment of Gangdese metallogenic *** garnet is the main altered mineral in the Mengya’a *** color of the garnet varies from chartreuse to dark yellow brown and to *** brown garnet(Grt1)is related to pyrrhotite and chalcopyrite,and the green garnet(Grt2)is associated with lead–zinc ***-ICP-MS is the induced coupled plasma mass *** paper has used this technique to investigate Grt1 and ***1 develops core–rim textures with strong oscillation zone occurring in rim,whereas Grt2lacks core–rim textures and featured by oscillation ***–ICP–MS analysis shows that garnets of Mengya’a are rich in CaO(29.90–37.52%)and FeO(21.17–33.35%),but low in Al_(2)O_(3)(0.05–4.85%).The calculated end members belong to grandite(grossular–andradite)garnets *** negative Al(IV)versus Fe^(3+),positive Al(IV)versus total Al stoichiometric number,the positive Al(IV)versus Fe^(3+),and the negative Al(IV)versus total REE,all indicate that the substitution of REEs in garnets is controlled by *** Garnets are depleted in large lithophile elements(e.g.,Rb=0.00–4.01 ppm,Sr=0.03–8.56 ppm).The total REE in Grt1 core is high(ΣREE=233–625 ppm),with HREE enriched pattern(LREE/HREE=0.33–1.69)and weak negative Eu anomalies(δEu=0.21–0.47).In contrast,the total REEs in the Grt1 rim and Grt2 are low(ΣREE=12.4–354 ppm;ΣREE=21.0–65.3 ppm),with LREE enriched pattern(LREE/HREE=0.54–34.4;LREE/HREE=11.4–682)and positive Eu anomalies(δEu=0.35–27.2;δEu=1.02–30.7).After data compilation of garnet chemicals,we found that the early fluid responsible for the core of Grt1 was a relatively closed and chloride-depleted fluid *** was close-to-neutral,with a low water–rock *** core of garnet was formed by fluid diffusion in metasomatic *** fluid was changed into a relatively open system with reduced,chloride-rich,and weakacid *** was fluid infiltration and

关键词： Garnet In-situ LA–ICP–MS analysis The Mengya’s Lead–Zinc skarn deposit Tibet

设障立惑培训法对低年资护士评判性思维能力、综合能力的影响

在线全文

学校读者我要写书评

暂无评论

国际护理学杂志 2024年第5期43卷 939-943页

作者：方秀敏陈翠华荀文芳上海市公惠医院护理部上海200041

目的探讨设障立惑培训法对低年资护士评判性思维能力、综合能力的影响。方法将上海市公惠医院2020年6~12月选择应用设障立惑培训法前的41名低年资护士纳入对照组(采用传统培训法), 对2021年1~6月选择应用设障立惑培训法后的41名低年资... 详细信息

目的探讨设障立惑培训法对低年资护士评判性思维能力、综合能力的影响。方法将上海市公惠医院2020年6~12月选择应用设障立惑培训法前的41名低年资护士纳入对照组(采用传统培训法), 对2021年1~6月选择应用设障立惑培训法后的41名低年资护士作为观察组(采用设障立惑培训法)。对比组间受训护士理论知识、技能操作成绩、评判性思维倾向量表评分、综合能力评分。结果观察组理论知识、技能操作考核成绩高于对照组, 观察组培训后评判性思维倾向量表总评分与其中的分析能力、寻求真相、系统化能力、思想开放、认知成熟度5个维度评分、观察评估能力、护理决策能力等综合能力评分高于对照组, 差异均有统计学意义(均P<0.05)。结论在对低年资护士的培训中应用设障立惑培训法, 对提高护士的培训考核成绩、评判性思维能力及综合能力有显著作用。

关键词：低年资护士设障立惑培训法评判性思维能力综合能力

Cu、Sn、Ag同位素在古金属制品溯源研究中的应用

在线全文

学校读者我要写书评

暂无评论

地质学报 2024年第7期98卷 2001-2024页

作者：程文斌郎兴海欧阳辉彭义伟陈翠华谢富伟王勇彭强杨超成都理工大学地球科学学院四川成都610059 成都理工大学沉积地质研究院四川成都610059 四川西冶新材料股份有限公司四川成都611700

近年来,随着同位素分析方法的不断突破和新一代多接收电感耦合等离子体质谱(MC-ICP-MS)测试技术的广泛应用,Cu、Sn、Ag等非传统同位素在古代金属制品溯源研究中显示出较好的应用前景。本文综述了近20年来Cu、Sn、Ag同位素在古代金属制... 详细信息

近年来,随着同位素分析方法的不断突破和新一代多接收电感耦合等离子体质谱(MC-ICP-MS)测试技术的广泛应用,Cu、Sn、Ag等非传统同位素在古代金属制品溯源研究中显示出较好的应用前景。本文综述了近20年来Cu、Sn、Ag同位素在古代金属制品应用研究的相关进展,并展望了其应用前景:①由于不同矿床之间Cu、Sn、Ag同位素存较大重叠,这些同位素均难以作为独立的证据追溯金属制品的地质来源;②Cu同位素在原生矿石与表生矿石之间存在较大的分馏,是示踪铜矿石类型的可靠方法,Ag同位素也具推断银矿石类型的潜力;③将Cu、Sn、Ag同位素与Pb同位素、微量元素相结合,并采用合理的统计方法,开展综合溯源研究将是今后应用非传统同位素进行古代金属制品溯源研究的发展方向。

关键词： Cu同位素 Sn同位素 Ag同位素古代金属制品溯源研究

基于多元统计分析评价不同干燥方法对金钱草中多元指标成分的影响

在线全文

学校读者我要写书评

暂无评论

中国药学杂志 2024年第5期59卷 398-408页

作者：周永逸陈海杰薛佳邹立思吴楠袁嘉欢刘训红蔡芷辰陈翠花杨薇程建明南京中医药大学药学院南京210023 江苏省经典名方工程研究中心南京210023

目的探究不同干燥方法对金钱草中多元指标成分的影响。方法采用超高效液相色谱-三重四极杆/线性离子阱质谱(UHPLC-QTRAP-MS/MS)同时测定不同干燥方法下金钱草中黄酮、有机酸、氨基酸及核苷类共44种指标成分的含量;根据44种目标成分的含... 详细信息

目的探究不同干燥方法对金钱草中多元指标成分的影响。方法采用超高效液相色谱-三重四极杆/线性离子阱质谱(UHPLC-QTRAP-MS/MS)同时测定不同干燥方法下金钱草中黄酮、有机酸、氨基酸及核苷类共44种指标成分的含量;根据44种目标成分的含量,用聚类分析(HCA)、灰色关联度分析(GRA)及逼近理想解排序方法(TOPSIS)法对不同干燥方法下金钱草样品进行综合评价。结果HCA结果显示,7个不同干燥方法主要分为2类,第1类为晒干和阴干,第2类为不同温度烘干、微波干燥和冷冻干燥;综合GRA和TOPSIS结果,晒干的金钱草样品综合质量较好,阴干和冷冻干燥也可以作为代替干燥方法。结论该研究可为揭示金钱草传统干燥方法科学内涵提供依据,同时为金钱草药材产地加工时干燥方法的优选提供基础资料。

关键词：金钱草干燥方法超高效液相色谱-三重四极杆/线性离子阱质谱多元指标成分多元统计分析

四川乌斯河铅锌矿床闪锌矿微量元素特征及其指示意义

在线全文

学校读者我要写书评

暂无评论

矿物岩石 2024年第2期44卷 62-73页

作者：赵文皓陈翠华康许浩杨玉龙孙世强马天祺赖翔辜鹰陈宵杰成都理工大学地球与行星科学学院四川成都610059

四川乌斯河铅锌矿床是川滇黔地区的大型矿床之一,近年来以其富含稀散元素Ge而备受关注,学者们在此做了大量的研究,但对其成因类型及Ge元素在矿床中的分布仍存在争议。本次研究运用显微镜下观察及LA-ICP-MS分析等测试手段,对乌斯河矿床... 详细信息

四川乌斯河铅锌矿床是川滇黔地区的大型矿床之一,近年来以其富含稀散元素Ge而备受关注,学者们在此做了大量的研究,但对其成因类型及Ge元素在矿床中的分布仍存在争议。本次研究运用显微镜下观察及LA-ICP-MS分析等测试手段,对乌斯河矿床按照矿体的不同部位采集两阶段闪锌矿共计12块样品,对其微量元素组成、结构特征等进行了测试分析,研究结果表明,该矿床中不同阶段的闪锌矿都具有相对富集Cd,Ga,Ge元素,贫Se、In的特征,其中Ⅰ阶段闪锌矿中Ge含量平均值为186×10^(-6),Ⅱ阶段闪锌矿中Ge含量平均值为56.4×10^(-6),两阶段的闪锌矿中Ge含量均大于5.00×10^(-6),Ⅰ阶段闪锌矿中的Ge含量高于Ⅱ阶段。此外,由Ⅰ阶段闪锌矿Zn/Fe的比值介于32.9~276.0,Ⅱ阶段闪锌矿Zn/Fe的比值介于126~3183得知,两阶段的闪锌矿成矿时的温度都属中一低温,且Ⅰ阶段闪锌矿的温度略高于Ⅱ阶段,得出在乌斯河矿床中Ge更易在温度较高的闪锌矿中富集。结合乌斯河矿床基础地质特征、微量元素组成特征、前人研究成果和本次研究内容可知,其与SEDEX,矽卡岩型以及岩浆热液型的矿床在微量元素特征、大地构造环境、矿体形态、矿石组构、矿物组合、围岩蚀变等方面存在明显区别,而与川滇黔地区MVT铅锌矿床(如会泽等铅锌矿床)基本一致。因此,认为乌斯河铅锌矿床属于MVT铅锌矿床。

关键词：乌斯河铅锌矿床闪锌矿微量元素特征 MVT铅锌矿床 LA-ICP-MS

盐酸氢吗啡酮对胃癌细胞的增殖、迁移和侵袭能力的影响

在线全文

学校读者我要写书评

暂无评论

中华实验外科杂志 2024年第7期41卷 1487-1489页

作者：李春来陈翠花谢玉波覃怡广西医科大学第一附属医院麻醉科南宁530021 广西消化道肿瘤加速康复外科基础研究重点实验室南宁530021

目的观察盐酸氢吗啡酮对人胃癌MGC-803细胞的增殖、迁移、侵袭和相关蛋白表达的影响。方法人胃癌MGC-803细胞随机分为两组(n=6):对照组(C组)和400 μmol/L氢吗啡酮组(H组)。应用细胞计数试剂盒(CCK-8)法检测细胞活力, 细胞克隆形成实验... 详细信息

目的观察盐酸氢吗啡酮对人胃癌MGC-803细胞的增殖、迁移、侵袭和相关蛋白表达的影响。方法人胃癌MGC-803细胞随机分为两组(n=6):对照组(C组)和400 μmol/L氢吗啡酮组(H组)。应用细胞计数试剂盒(CCK-8)法检测细胞活力, 细胞克隆形成实验检测细胞的增殖能力, Transwell实验检测细胞的侵袭和迁移能力, 蛋白质印迹法(Western blot)检测磷酸化磷脂酰肌醇3激酶(p-PI3K)、磷酸化蛋白激酶B(p-Akt)和磷酸化雷帕霉素靶蛋白(p-mTOR)蛋白的表达, 组间比较采用方差分析和独立样本t检验。结果 H组的细胞活力明显低于C组[(66.34±7.56)%比(93.76±4.97)%, t=7.421, P<0.05], 差异有统计学意义。H组胃癌细胞克隆形成能力低于C组[(62.17±4.79)%比(90.83±7.73)%, t=7.720, P<0.05], 差异有统计学意义。H组细胞迁移数低于C组[(101.67±5.43)个比(142.83±6.29)个, t=11.816, P<0.05], H组的细胞侵袭数低于C组[(75.83±4.02)个比(94.50±5.96)个, t=6.361, P<0.05], 差异有统计学意义。H组p-PI3K蛋白的表达低于C组(0.24±0.03比0.53±0.04, t=13.915, P<0.05), 差异有统计学意义。H组p-Akt蛋白的表达低于C组(0.54±0.05比0.64±0.06, t=3.021, P<0.05), 差异有统计学意义。H组p-mTOR蛋白的表达低于C组(0.17±0.02比0.24±0.03, t=5.081, P<0.05), 差异有统计学意义。结论氢吗啡酮抑制MGC-803细胞的增殖、侵袭和迁移能力, 其作用可能与抑制PI3K/Akt/mTOR信号通路有关。

关键词：氢吗啡酮胃癌增殖侵袭迁移

The Characteristics of Sulfur and Lead Isotope Geochemistry of Laozhaiwan Gold Deposit,Yunnan Province

在线全文

学校读者我要写书评

暂无评论

地球科学进展 2012年第S1期27卷 310-311页

作者： Zhao Dekun chen cuihua Gu Xuexiang Dai HongZhang He Chaoxin College of Earth Sciences Chengdu University of Technology School of Earth Sciences & Resources China University of Geosciences

1 Introduction Laozhaiwan gold deposit,a part of"Golden Triangle"in Yunnan-Guizhou-Guangxi,was located in Jiumo village in Guangnan county,Yunnan *** main ore-bearing stratum of the deposit was Posongchong Formation（D1 ps）of the lower *** structure was well-developed in this area,the ore bodies produced which mainly controlled by the *** was a diabasic dike in the northwest of this area,where the grade of the ore bodies was higher.2 S isotope geochemistry The composition ofδ34S in pyrites was 5.

关键词： Sulfur stratum geochemistry village northwest Isotope Golden county isotope mantle

Geological characteristics and the origin of ore-forming materials of(Laozhaiwan gold deposit, Yunnan Province

在线全文

学校读者我要写书评

暂无评论

矿床地质 2014年第S1期33卷 853-854页

作者： ZHAO DeKun chen cuihua ZHANG Yan GU XueXiang TU ZongLin DAI HongZhang Sichuan Institute of Metallurgical Geology & Exploration College of Earth Science Chengdu University of Technology School of Earth Science and Resources China University of Geoscience

"Golden triangle"area bordered on Yunnan-Guizhou-Guangxi was one of the most important Carlin-type gold deposits concentration *** understanding of Carlin-type gold deposits in Guizhou and Guangxi Province had reached through several decades studies,but geological environment was very complex in the southeastern Yunnan,and Carlin-type gold deposits produced in the southeastern Yunnan were different from that of America,few studies were taken *** on a large number of field work,studies on the geological characteristics combining with geochemistry characteristics were taken,and analysis the genesis of Laozhaiwan gold *** types of alteration in Laozhaiwan gold deposit were mainly silicification and pyritization,and Gold grade was high when silicification and pyritization were both *** could be caculated that fluid density(g/cm3)varied from 0.7 to 4.9,salinity varied from 0.76%to 0.95%and ore-forming pressure(Pa)varied from 1.81×105 to 49.96×105 according to fluid inclusion test results,showed that Laozhaiwan gold deposit was hypabyssal hydrothermal deposit in low temperature and low *** to composition of fluid inclusion analysis,combining with H-O isotope,made theδD-δ18O figure,showed that the fluid of the deposit rooted in formation water and mixed with meteoric waters later.

关键词： Geological characteristics and the origin of ore-forming materials of Laozhaiwan gold deposit Yunnan Province