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Discussion on Nontraditional Mineral Resources

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Journal of Earth Science 2000年第3期19卷 21-25页

作者： Zhao pengda chen Jianping China University of Geosciences, Beijing 100083, China

In this paper, the authors introduce the concept of nontraditional mineral resources, and propose the major system of nontraditional mineral resources, including nontraditional resources, research methods, mining and mineral economics. Then the authors conclude that the research on nontraditional mineral resources is not only significant to satisfication the human needs in the 21st century, but also important to the development of the present geological theory.

关键词： nontraditional mineral resources nontraditional research method mining and mineral economics.

Important Issues of Sustainable Development:Research of Nontraditional Mineral Resources

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Journal of Earth Science 2000年第2期19卷 3-7页

作者： Zhao pengda chen Jianping Institute of High and New Techniques Applied to Land Resources, China University of Geosciences, Beijing 100083

Nontraditional resources refer to that potential mineral resources are unconsidered and unutilized under actual condition of technique, economic and environment, or some mineral resources are too difficult to find because of geological complexity. There are some signified problems about discovery and exploration of nontraditional mineral resources to be discussed in this paper. It is a very significant project next century, and makes development bases for offspring, which its research and practice the theory of nontraditional mineral resources need interactive combination.

关键词： nontraditional mineral resources sustainable development,geological anomaly.

Dhx33 promotes B-cell growth and proliferation by controlling activation-induced rRNA upregulation

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Cellular & Molecular Immunology 2023年第3期20卷 277-291页

作者： Xiaoyu He Jiayi Zhao Abidan Adilijiang Peicheng Hong pengda chen Xinyong Lin Jun Xie Ying Du Yun Liu Lianghua Lin Hyun Yong Jin Yazhen Hong Wen-Hsien Liu Changchun Xiao state Key Laboratory of Cellular Stress Biology School of Life SciencesFaculty of Medicine and Life SciencesXiamen UniversityXiamenFujianChina Department of Immunology and Microbiology The Scripps Research InstituteLa JollaCA 92037USA Genentech Inc. South San FranciscoCA 94080USA Sanof Institute for Biomedical Research Suzhoujiangsu 215123China

Upon recognition of foreign antigens,naïve B cells undergo rapid activation,growth,and *** B-cell growth and proliferation are coupled with activation remains poorly *** CRISPR/Cas9-mediated functional analysis and mouse genetics approaches,we found that Dhx33,an activation-induced RNA helicase,plays a critical role in coupling B-cell activation with growth and *** mice with B-cell-specific deletion of Dhx33 exhibited impaired B-cell development,germinal center reactions,plasma cell differentiation,and antibody ***33-deficient B cells appeared normal in the steady state and early stage of activation but were retarded in growth and ***,Dhx33 played an indispensable role in activation-induced upregulation of ribosomal DNA(rDNA)*** the absence of Dhx33,activated B cells were compromised in their ability to ramp up 47S ribosomal RNA(rRNA)production and ribosome biogenesis,resulting in nucleolar stress,p53 accumulation,and cellular *** findings demonstrate an essential role for Dhx33 in coupling B-cell activation with growth and proliferation and suggest that Dhx33 inhibition is a potential therapy for lymphoma and antibody-mediated autoimmune diseases.

关键词： RNA helicases B cell activation Germinal center reaction

Theory of Geological Anomaly in Remote Sensing

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Journal of China University of Geosciences 2001年第2期12卷 108-112页

作者： chen Jianping Zhao pengda Ding Huoping The Institute of High and New Techniques Applied to Land Resources, China University of Geosciences, Beijing 100083 The Institute of High and New Techniques Applied to Land Resources China University of Geosciences

Geological anomaly is geological body or complex body with obviously different compositions, structures or orders of genesis as compared with those in the surrounding areas. Geological anomaly, restrained by the geological factors closely associated with ore forming process, is an important clue to ore deposits. The geological anomaly serves as a geological sign to locate ore deposits. Therefore, it is very important to study how to define the characteristics of geological anomaly and further to locate the changes in these characteristics. In this paper, the authors propose the geological anomaly based on the remote sensing images and data, and expound systematically such image features as scale, size, boundary, morphology and genesis of geological anomalies. Then the authors introduce the categorization of the geological anomalies according to their geneses. The image characteristics of some types of geological anomalies, such as the underground geological anomaly, are also explained in detail. Based on the remote sensing interpretation of these geological anomalies, the authors conclude that the forecasting and exploration of ore deposits should be focused on the following three aspects: (1) the analysis of geological setting and geological anomaly; (2) the analysis of circular geological anomaly, and (3) the comprehensive forecasting of ore deposits and the research into multi source information.

关键词： geological anomaly remote sensing geology geological field.

MIGRATION OF ALKALINE METAL ELEMENTS POTASSIUM AND SODIUM DURING ZEOLITE MINERALIZING

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Scientia Geologica Sinica 2001年第3期 197-203页

作者： Zhang Shouting, Zhao pengda and chen Jianping China University of Geosciences, Beijing, 100083 Xu zhanzhang and Zheng Minghua chengdu University of Ttechnology, chengdu, 610059

Samples of zeolite ores collected from several deposits of the Muling zeolite orefield were analyzed by XRD, DTA, SEM, NAA, and EPMA. There is evidence that the migration of alkaline metal elements k and Na played an important role during zeolite mineralization. In forming of mordenite more Na+ might come in the mineralizing fluid and more K+ might come out of it, but in forming of clinoptilolite more K+ might come in the mineralizing fluid and more Na+ might come out of it. The formation of simple and mixed zeolie deposits might be related to the K-Na fractionation in the metallizing process: a higher K-Na fractionation is responsible for the formation of simple zeolite (mordenite or clinoptilolite) deposits, but a lower K-Na fractionation is responsible for the mixed zeolite (mordenite and clinoptilolite) deposits.

关键词： MIGRATION OF ALKALINE METAL ELEMENTS POTASSIUM AND SODIUM DURING ZEOLITE MINERALIZING CaO SiO rock MgO

襄阳都市圈民俗文化旅游发展路径研究——以襄阳为例

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襄阳职业技术学院学报 2023年第2期22卷 12-16,68页

作者：陈文俊陈芃达襄阳职业技术学院湖北襄阳441050

民俗文化作为人类的一种基础文化,在现代旅游业中的价值与意义正日益展现出来。针对襄阳都市圈丰富的民俗文化资源有待进一步改善等问题,文章提出科学规划民俗旅游区、活化非物质文化遗产、合理设计民俗旅游线路、做足线上民俗旅游攻略... 详细信息

民俗文化作为人类的一种基础文化,在现代旅游业中的价值与意义正日益展现出来。针对襄阳都市圈丰富的民俗文化资源有待进一步改善等问题,文章提出科学规划民俗旅游区、活化非物质文化遗产、合理设计民俗旅游线路、做足线上民俗旅游攻略、编好民俗故事导游词等发展襄阳都市圈民俗文化旅游的路径。

关键词：襄阳都市圈民俗文化旅游

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不锈钢绞股焊丝MAG焊熔滴过渡特征分析

热加工工艺 2023年第13期52卷 142-147页

作者：贾蒙储继君徐锴吕晓春姜英龙陈鹏达哈尔滨焊接研究院有限公司黑龙江哈尔滨宾150028

采用高速摄像法对直径φ1.6 mm的不锈钢绞股焊丝熔滴过渡特征进行了拍摄观察。试验发现,随着焊接规范的增大,不锈钢绞股焊丝依次出现短路过渡、混合过渡、射滴过渡以及射流过渡等熔滴过渡方式。通过对各种熔滴过渡特征进行对比分析后发... 详细信息

采用高速摄像法对直径φ1.6 mm的不锈钢绞股焊丝熔滴过渡特征进行了拍摄观察。试验发现,随着焊接规范的增大,不锈钢绞股焊丝依次出现短路过渡、混合过渡、射滴过渡以及射流过渡等熔滴过渡方式。通过对各种熔滴过渡特征进行对比分析后发现:电爆炸是短路过渡和混合过渡焊接飞溅的主要成因,而射流过渡时的焊接飞溅则主要由多个熔滴熔合碰撞造成;射滴过渡为不锈钢绞股焊丝的主要熔滴过渡方式,其过渡频率约为100次/s且没有飞溅产生。

关键词：熔滴过渡不锈钢绞股焊丝 MAG焊

Digital Geosciences and Quantitative Mineral Exploration

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Journal of Earth Science 2021年第2期32卷 269-275页

作者： pengda Zhao Yongqing chen School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China School of Earth Resources China University of GeosciencesWuhan 430074China

The idea of mineral exploration,which is called"exploration philosophy"in the Western countries,is the thoughts,the methodology,technology,goals and organization that guide mineral *** three basic elements of mineral exploration are"what to find","where to find"and"how to find".The concept of mineral exploration is gradually changing with the development of these three elements that provide a powerful driving force to change mineral exploration concepts,methods and *** of mineral exploration concepts is the result of continuing exploration and development keeping pace with the *** combination of"mathematical geology"and"information technology"can be called"digital geology".Digital geology is the data analysis component of geological *** data science is a science that uses the general methodology of data to study geology based on the characteristics of geological data and the needs of geological field *** mineral exploration is the application of digital geology in mineral exploration to reduce ore-finding uncertainty.

关键词： three basic elements of mineral exploration integrated digital ore-finding patterns quantitative assessment of mineral resources mathematical geology digital geoscience

Application of BEMD in Extraction of Magnetic Anomaly Components Associated with Sn-W Polymetallic Mineralization in SE Yunnan,SW China

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Journal of Earth Science 2021年第2期32卷 318-326页

作者： chen chen Xu Zhu Yongqing chen Shouting Zhang pengda Zhao School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China

The tin(Sn)-tungsten(W)polymetallic ore concentrated district in SE Yunnan is distributed at the junction region of the Yangtze Block,the Cathaysian Block and the Indosinian Block,where there are several giant deposits of tin,tungsten,copper,silver,lead,zinc and indium closely associated with a large scale Late Cretaceous ***-dimensional empirical mode decomposition(BEMD)is used to extract aeromagnetic anomalous components at the survey scale of 1:200000 from the original aeromagnetic data of SE *** intrinsic mode functions(IMFs)and a residues component are obtained,which may reflect the geological structures and geological bodies at different spatial scales from high frequency to low *** results are shown as follows:(1)Two different types of Precambrian basement in the study area were recognized:one is the Yangtze Block basement characterized by a strong positive magnetic anomaly,the other is the Cathaysian Block basement with a weak negative magnetic *** former consists of high grade metamorphic rocks including metamorphosed basic igneous rocks,while the latter consists of low grade metamorphosed sedimentary rocks.(2)The aeromagnetic anomalies associated with Sn-W polymetallic mineralization and related to granites in the study area illustrate a pattern of a skarnized alteration-mineralization zone with a positive ring magnetic anomaly enclosing a granitic intrusion with negative magnetic anomaly;(3)The ring positive magnetic anomaly zones enclosing the negative magnetic anomaly are defined as the SnW polymetallic ore-searching targets in the study area.

关键词： BEMD intrinsic mode function(IMF) magnetic anomalous components Sn-W polymetallic deposits Late Cretaceous granites SW China

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