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Geological characteristics of the Sizhuang gold deposit in the region of Jiaodong, Shandong Province——A study on tectono-geochemical ore prospecting of ore deposits

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Chinese Journal Of Geochemistry 2011年第4期30卷 539-553页

作者： QIAN jianping CHEN Hongyi meng Yong College of Earth Sciences Guilin University of Technology Guangxi Guilin 541004 China

Tectono-geochemical samples were systematically collected from 5 drillcores along the No. 304 explora-tion line and at the -310 m level under the pit in the mining area, totalling 705 samples from the metamorphic rocks, granites, altered rocks and orebodies, and were determined for their contents of 20 kinds of elements including Au, Ag, As, Sb, Hg, Cu,,Pb, Zn, Sn, Bi, Mo, Co, Ni, Mn, Cr, V, Ti, Ba, Rb, Sr, etc. By using the Surfer software the geochemical exploration line profile maps for the 20 kinds of elements and the curves for the element geochemical contents of individual ore vein groups were established. In conbination with the geochemical map analytical method and Gregorian's zoning index calculation method, the vertical, longitudinal and lateral zonation sequences of the elements were ascertained and the geochemical three-dimentional zonation model of the primary halos was estab-lished on the basis of the analysis of metallogenic structures and alteration zonation. Coupled with the results of analysis of the geology and geochemistry data, it may be concluded that the process of alteration of granites in the mining area is also accompanied with the process of gold enrichment and mineralization. With the intensification of alteration of granites from granite →potash feldspathization granite →sericite-quartz alteration granite, seric-ite-quartz rocks →beresitized granite, pyrite sericite-quartz rock, silicified granite →gold ore, the contents of thio-phile ore-forming elements such as Au, Ag, As, Cu, Bi, Mo, Pb, Sb, Hg, and Sn tended to increase. Factor analysis of trace elements indicated: factor F2 (Au, Ag, Cu, Sn, As) represents the element association brought in at the main stage of hydrothermal metallogenesis; factor F4 (Bi, Sb) and factor F5 (Pb, Zn) represent the ore-forming element association supperposed during the late stage of Au-bearing sulfides. By using the Gregorian's zoning index and map analysis method we have ascertained the primary halo axi

关键词：构造地球化学金矿床金矿石地质特征矿床勘探胶东地区元素地球化学矿化蚀变分带

The recent advances in self-powered medical information sensors

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InfoMat 2020年第1期2卷 212-234页

作者： Luming Zhao HuLi jianping meng Zhou Li CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijingChina School of Nanoscience and Technology University of Chinese Academy of SciencesBeijingChina School of Biological Science and Medical Engineering Beihang UniversityBeijingChina Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanningChina

Monitoring various medical information distributed throughout the body is of great importance in early clinic diagnosis and treatment of *** discover abnormal medical signals and find their causes in good time,the human body should be monitored continuously and *** meet the requirements,various battery-less and self-powered information acquisition techniques are *** this review,the recent advances in self-powered medical information sensors(SMIS)with different functions,structure design,and electric performance are summarized and *** SMIS mainly involves triboelectric nanogenerator(TENG),piezoelectric nanogenerator(PENG),pyroelectric nanogenerator(PyNG)/thermoelectric generator(TEG)and solar ***,this review also analyzed the remaining challenges and prospected the development direction of SMIS in future.

关键词： medical information piezoelectric nanogenerator self-powered sensor solar cells thermoelectric generators triboelectric nanogenerator

Synthesis and applications of thiosulfonates and selenosulfonates as free-radical reagents

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Chinese Chemical Letters 2023年第4期34卷 53-66页

作者： Xin Wang jianping meng Dongyang Zhao Shi Tang Kai Sun College of Chemistry and Chemical Engineering Yantai UniversityYantai 264005China College of Chemistry and Chemical Engineering Jishou UniversityJishou 416000China

Chalcogenative sulfones(thiosulfonates and selenosulfonates), as reactants for organic transformations,are widely used and interesting because of their potential to react with nucleophiles, electrophiles, and free radicals. As stable radical reagents, the synthesis and applications of chalcogenative sulfones have opened up a novel pathway to synthesize many kinds of compounds containing sulfur or selenium motifs. However, despite the numerous recent works on the synthesis and applications of thiosulfonates and selenosulfonates as radical reagents, no review has yet provided a summary of the literature. In this paper, we aim to review the synthesis and applications strategies of chalcogenative sulfones as radical reagents reported over the past several decades. Different types of catalysis are discussed in this review:(i) metal catalysis;(ii) visible-light catalysis;(iii) synergistic catalysis;and(iiii) other types. Concurrently,in visible-light catalysis and metallaphotoredox catalysis sections, we highlight that developing relatively environmentally friendly synthetic methods in this area is always a great challenge, but also a persistent pursuit. Finally, the scopes, limitations, mechanisms, and existing problems of some reactions are described briefly.

关键词： Chalcogenative sulfones Radical Synthesis Applications Mechanisms

Evaluation of 118 Thyroid Cancer Patients Who Underwent a Re-operation after Local Resection

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Chinese Journal of Clinical Oncology 2005年第5期2卷 800-804页

作者： jianping Hang Dong meng Liqi Li Department of Thyroid and Breast Surgery Wuxi No. 4 Hospital WuxiJiangsu 214062 China.

OBJECTIVE To evaluate the incidence of residual thyroid cancer and cervical lymph node metastasis following a previous local resection for thyroid cancer, and to discuss methods of a reoperation. METHODS From 1994-2005, 118 patients with thyroid cancer who had previously been treated with a nodule-resection or subtotal Iobectomy in other hospitals underwent a surgical re-operation. RESULTS The incidence of residual cancer at the primary site was 38.1%. The lymph node metastasis rate at the central area was 39.8%. The rate of lymph node metastasis in patients with enlarged lymph nodes in the ipsilateral internal jugular chain was 37.5%, The rate of laryngeal recurrent nerve injury was 15.2% in other hospitals while that of the second operation in our hospital was 1.6%. CONCLUSION Nodule-resection or subtotal Iobectomy alone is not indicated for patients with thyroid cancer because of the high rate of local residual cancer. It is important to be familiar with the anatomy of the laryngeal recurrent nerve for thyroid surgery. Exploration to the central area is necessary for differentiated thyroid cancer.

关键词： thyroid neoplosm re-operotion.

一维/二维半导体器件肖特基势垒高度的调整方法

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Science Bulletin 2024年第9期69卷 1342-1352页

作者：孟建平李正国李舟 Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS National University of SingaporeSingapore 117608Singapore

The Schottky contact which is a crucial interface between semiconductors and metals is becoming increasingly significant in nano-semiconductor devices. A Schottky barrier, also known as the energy barrier, controls the depletion width and carrier transport across the metal–semiconductor *** or adjusting Schottky barrier height(SBH) has always been a vital issue in the successful operation of any semiconductor device. This review provides a comprehensive overview of the static and dynamic adjustment methods of SBH, with a particular focus on the recent advancements in nanosemiconductor devices. These methods encompass the work function of the metals, interface gap states,surface modification, image-lowering effect, external electric field, light illumination, and piezotronic effect. We also discuss strategies to overcome the Fermi-level pinning effect caused by interface gap states, including van der Waals contact and 1D edge metal contact. Finally, this review concludes with future perspectives in this field.

关键词： Schottky contact Schottky barrier height Adjustment methods One-and two-dimensional semiconductor

某电传动矿用自卸车转向泵损坏原因分析与改进措施

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机床与液压 2017年第22期45卷 199-200页

作者：孟建平内蒙古机电职业技术学院电气工程系内蒙古呼和浩特010070

对某型号矿用自卸车转向泵损坏原因进行分析,并提出相应的解决措施,收到了良好的效果。

关键词：矿用自卸车转向泵损坏分析解决措施

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光电技术在含硒杂环合成中的应用研究

有机化学 2021年第12期41卷 4588-4609页

作者：王薪张艳孙凯孟建萍张冰郑州大学化学工程学院郑州450001 烟台大学化学与化学工程学院山东烟台264005

含硒杂环是一类重要的有机分子,在医药、农用化学品、有机材料等领域有着广泛的应用.因此,有机分子中引入硒原子在合成化学中具有重要意义.可见光和电化学技术是较为绿色、可持续的合成方法之一,在不饱和键的双官能化、环化以及C—H键... 详细信息

含硒杂环是一类重要的有机分子,在医药、农用化学品、有机材料等领域有着广泛的应用.因此,有机分子中引入硒原子在合成化学中具有重要意义.可见光和电化学技术是较为绿色、可持续的合成方法之一,在不饱和键的双官能化、环化以及C—H键的直接官能化等领域开辟了广阔的应用前景.近年来,发展新颖的利用光电技术驱动不饱和键的硒环化反应和C—H键的直接硒化反应备受关注.分别描述了近年快速发展的电化学驱动、可见光诱导含硒杂环的合成反应,并对部分反应的适用范围和机理进行了讨论.

关键词：有机硒化合物硒环化烯炔烃可见光电化学

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领导理论丛林与领导学科的发展

科学学与科学技术管理 2008年第3期29卷 160-166页

作者：孟建平霍国庆中国科学院研究生院管理学院北京100080

目前领导理论出现了一种类似于1961年管理学家孔茨描述管理理论时所指的混乱状态,将之喻为"领导理论丛林"。在"丛林"中,许多关于领导的定义和观点彼此冲突。描述了"丛林"状态,并分析了其产生的根源,最后提出了解决这种状态的办法和发展... 详细信息

目前领导理论出现了一种类似于1961年管理学家孔茨描述管理理论时所指的混乱状态,将之喻为"领导理论丛林"。在"丛林"中,许多关于领导的定义和观点彼此冲突。描述了"丛林"状态,并分析了其产生的根源,最后提出了解决这种状态的办法和发展领导学科的建议。

关键词：领导领导学丛林

烯丙基肟的环化反应合成异噁唑啉衍生物的研究进展

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有机化学 2020年第9期40卷 2742-2754页

作者：刘颖杰孟建萍李晨林立青许颖哈尔滨商业大学药学院哈尔滨150076

异噁唑啉是一类具有诸多生物学特性的杂环,是许多天然产物和生物活性化合物的关键结构骨架,有效的异噁唑啉合成方法已成为广泛的研究主题.描述了利用烯丙基肟合成各种官能化异噁唑啉的最新研究进展,其涉及在氧化剂存在下的自由基氧化/... 详细信息

异噁唑啉是一类具有诸多生物学特性的杂环,是许多天然产物和生物活性化合物的关键结构骨架,有效的异噁唑啉合成方法已成为广泛的研究主题.描述了利用烯丙基肟合成各种官能化异噁唑啉的最新研究进展,其涉及在氧化剂存在下的自由基氧化/环化反应.这些反应通常使用容易获得的氧化剂和不同的金属或无金属作为催化剂,在中性反应条件下进行反应.

关键词：异噁唑啉烯丙基肟环化反应金属催化