检索结果-南通市图书馆

Acta Geologica Sinica(English Edition) 2020年第1期94卷 206-207页

作者： MA Xu chen Bin chen jiafu Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Department of GeologyNortheastern UniversityShenyang 110004China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055China

Objective Though the Central Asian Orogenic Belt (CAOB) is characterized by widespread Phanerozoic crustal growth,there is little juvenile crust documented in its southeastern segment,northern margin of the North China Craton(NCC)(Zhang et al,2007,2009).Late Carboniferous Dongwanzi ultramafic-mafic cumulate complex occurs in northern margin of the NCC and is intruded by a syenite with depleted Sr-Nd isotopes (Ma et al.,2014).However,the age and petrogenesis of this syenite is poorly *** this study,we present new petrological,zircon U-Pb and Hf isotopic data of the Dongwanzi syenite,in order to put insights on its formation age and petrogenetic relationship with cumulates.

关键词： Evidence from Zircon U-Pb Age and Depleted Hf Isotope of the Dongwanzi Syenite Northern Late Carboniferous Vertical Crustal Growth in Northern North China Craton

Identity and Differences Between Chinese and Western Cultural Philosophy

在线全文

学校读者我要写书评

暂无评论

学术界 2018年第11期 262-272页

作者： chen jiafu Wang Weili College English Teaching and Research Department Tianjin Agricultural University

Cultural philosophy refers to the study of cultural principles with philosophical viewpoints and methods to form a theoretical system of cultural views and cultural *** mainly discusses the history and development of culture,the motive force and conditions of culture,the role of tradition in social history,the comparison of various cultures,and the conflict and blending of *** paper attempts to explore an effective way to integrate the two modes of thinking of Chinese and Western cultural philosophy through a comparative analysis of the differences and identity between Chinese and Western cultural *** study of cultural identity and differences between China and Western countries has a certain practical significance for cross-cultural communication in China.

关键词： cultural philosophy differences identity

Detrital Zircon U-Pb Geochronology and Provenance of the Hebukesaier Formation in the Shaerbuerti Mountains,Northern West Junggar:Implication for Devonian Subduction of the Junggar–Balkhash Ocean

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2020年第5期94卷 1410-1427页

作者： LIANG Hao chen jiafu MA Xu YANG Hongzhang XIN Mingyang Department of Geology Northeastern UniversityShenyang 110819China Department of Earth Planetaryand Space SciencesUniversity of CaliforniaLos Angeles90095USA

Limited Devonian magmatic record in northern West Junggar leads to contrasting models on its tectonic *** this study,we conducted LA-ICP-MS U-Pb dating on detrital zircons of two sandstones from the Hebukesaier Formation in the Shaerbuerti *** zircons with oscillatory zoning are characterized by high Th/U(>0.3)and low La/Yb(<0.15),indicating their magmatic *** youngest zircon ages of two samples are 402±2 Ma and 406±2 Ma,respectively,suggesting that the Hebukesaier Formation was deposited at the Early *** zircon age patterns show single peaks(at ca.424 Ma,n=157),which indicates that these clastics were likely proximal accumulation after short distance *** of the Hebukesaier Formation was the Xiemisitai and Shaerbuerti *** zircon ages range from 481 Ma to 395 Ma,which indicates that there was relatively continuous Early Paleozoic magmatism in the Xiemisitai and Shaerbuerti Mountains since the Early *** spectrums of sampled detrital zircons are distinct from those of Lower Devonian strata either in southern West Junggar or in East Junggar,which implies for individual tectonic evolution of northern West *** favor that Lower Devonian Hebukesaier Formation was developed in a fore–arc setting due to the northward subduction of the Junggar–Balkhash Ocean.

关键词： geochronology detrital zircon fore-arc Devonian West Junggar

Petrogenesis and Tectonic Implications of Middle Ordovician Ocean Island Basalts from the Chagantaolegai Ophiolitic Mélange in Junggar,NW China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2021年第4期95卷 1099-1111页

作者： chen jiafu LI Rongyan MA Haitao HAN Baofu LIU Junlai Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Department of GeologyNortheastern UniversityShenyang 110819China Department of Earth Planetaryand Space SciencesUniversity of CaliforniaLos Angeles 90095USA Ministry of Education Key Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space SciencesPeking UniversityBeijing 100871China State Key Laboratory of Geological Process and Mineral Resources School of Earth Sciences and ResourcesChina University of Geosciences(Beijing)Beijing 100083China

Seamount accretion is one of the most significant accretionary orogenic processes in the Central Asian Orogenic Belt,but there are few paleo-seamounts reported from and debate on the tectonic evolution of the Junggar Ocean still *** this study,we present geochronological,mineralogical,geochemical and isotopic data for basalts from the Chagantaolegai ophiolitic mélanges in *** U-Pb dating on one basalt yielded a weighted mean^(206)Pb/^(238)U age of 469±7 Ma,which suggests that it formed in the Middle *** rock samples belong to alkaline basalt and show similar geochemical characteristics,displaying high TiO_(2)(~3 wt%),(La/Yb)N(17.6–19.0),ΣREE(232–289 ppm)and enrichment in Nb and Ta,which implies an ocean island basalt(OIB)*** upon positiveεN d(t)(+4.16 to+4.23),ΔNb(0.20–0.22)and low initial^(87)Sr/^(86)Sr(0.70425 to 0.70452)and Zr/Nb(3.35–3.57),we suggest that the Chagantaolegai OIB samples were likely derived from a fertile mantle source related to *** OIB rock assemblage,chert and marble in the southern part of the Chagantaolegai ophiolitic mélange indicates that a Middle Ordovician seamount was accreted to the Boshchekul-Chingiz arc due to the northward subduction of the Junggar-Balkhash Ocean.

关键词： ocean island basalt seamount Middle Ordovician CAOB West Junggar

Inclusive Growth and Social Fairness

在线全文

学校读者我要写书评

暂无评论

学术界 2011年第1期 249-250页

作者： chen jiafu school of Marxism ,Shandong University

In the domestic and foreign theoretical study and social practice,social fairness is always *** growth is a result of deep thinking on social *** ultimate purpose of inclusive growth is to spread the benefits of econo... 详细信息

关键词： deep Inclusive Growth and Social Fairness

Geochemistry of Platinum Group and Rare Earth Elements of the Polymetallic Layer in the Lower Cambrian,Weng'an,Guizhou Province

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2009年第3期83卷 618-627页

作者： FU Yong WU Chaodong GUAN Ping QU Wenjun chen jiafu Key Laboratory of Orogenic Belts and Crustal Evolution MOE Peking University Beijing 100871 China National Research Center of Geoanalysis Beijing 100037 China

The black shales of the Lower Cambrian Niutitang Formation in Weng＇an, on the Yangtze platform of south China, contain voluminous polymetallic sulfide deposits. A comprehensive geochemical investigation of trace, rare earth, and platinum group elements （PGE） has been undertaken in order to discuss its ore genesis and correlation with the tectono-depositional setting. The ore-bearing layers enrich molybdenum （Mo）, nickel （Ni）, vanadium （V）, lead （Pb）, strontium （Sr）, barium （Ba）, uranium （U）, arsenic （As）, and rare earth elements （REE） in abundance. High uranium/ thorium （U/Th） ratios （U/Th〉I） indicated that mineralization was mainly influenced by the hydrothermal process. The 8U value was above 1.9, showing a reducing sedimentary condition. The REE patterns showed high enrichment in light rare earth elements （LREE）（heavy rare earth elements （HREE）（LREE/HREE=5-17）, slightly negative europium （Eu） and cerium （Ce） anomalies （δEu=0.81- 0.93）, and positive Ce anomalies （δCe=0.76-1.12）. PGE abundance was characterized by the PGE-type distribution patterns, enriching platinum （Pt）, palladium （Pd）, ruthenium （Ru） and osmium （Os）. The Pt/Pd ratio was 0.8, which is close to the ratios of seawater and ultramafic rocks. All of these geochemical features suggest that the mineralization was triggered by hydrothermal activity in an extensional setting in the context of break-up of the Rodinian supercontinent.

关键词： geochemistry polymetallic layer hydrothermal activity Lower Cambrian

A Comparative Studyof Chinese and Western Philosophical Thoughts in Cross Cultural Communication

在线全文

学校读者我要写书评

暂无评论

学术界 2016年第8期 293-298页

作者： chen jiafu Tianjin Agricultural University

Philosophy has a very important role in the development of *** some extent,the development of philosophy determines the degree of social and economic *** on the similarities and differences between Chinese and western philosophies,this paper explores explore effective measures of cultural exchanges between China and Western countries.

关键词：哲学思想跨文化交际社会经济发展社会发展文化交流西方国家相似性

Molecular authentication of the traditional Chinese medicine Tongren Dahuoluo Wan and its alternative formulation

在线全文

学校读者我要写书评

暂无评论

Frontiers of Agricultural Science and Engineering 2017年第3期4卷 353-357页

作者： Jikun WANG Jing DU Meng CAO Lu YAO Suhua XIE jiafu chen Xingbo ZHAO National Engineering Laboratory for Animal Breeding Key Laboratory of Animal Genetics Breeding and ReproductionMinistry of Agriculture College of Animal Science and Technology China Agricultural University Research Institute of Beijing Tongrentang Co. Ltd.

Tongren Dahuoluo Wan has been a popular traditional Chinese medicine in international pharmaceutical markets for hundreds of years. Leopard bone powder is the key element in its formulation. However, the leopard has been listed for wildlife conservation, which limits the use of the leopard bone supplies. Therefore, an alternative formulation which substitutes leopard bone with zokor bone in the formula of Tongren Dahuoluo Wan is now manufactured. To develop a simple and reliable molecular method for authenticating the two patent medicines,mitochondrial nucleotide polymorphic sites of 12 S rRNA,COI and Cytb genes were screened in leopard and zokor bones, and nine pairs of species-specific primers were verified for discriminating the two species. For the patent medicine authentication, we set up a molecular diagnostic assay to resolve the difficulties of low concentration of target DNAs and presence of PCR-inhibitory substances in this complex medicine, and successfully confirmed leopard or zokor content using the nine pairs of species-specific primers. We recommend a common technical strategy for authentication of species origins in traditional Chinese medicine, and discuss the experimental solutions for technical problems of molecular diagnostic assays.

关键词： Tongren Dahuoluo Wan molecular diagnostic assay Eospalax baileyi Panthera pardus species-specific primers