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胶东区域成矿断裂带蚀变年龄研究及其矿床学意义

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地学前缘 2017年第2期24卷 140-150页

作者：吕承训 norbert h.maerz Kenneth J.BOYKO 吕古贤邵鹤森密苏里科技大学地质科学与石油及地质工程学院美国密苏里州罗拉65401 中国地质科学院地质力学研究所北京100081 中国地质大学(北京)地球科学与资源学院北京100083

胶东金矿是中生代构造岩浆活化区岩浆期后中温热液蚀变脉状矿床。前人曾认为该类金矿属于壳源深融花岗岩-热液石英脉-蚀变岩型金矿。近期研究表明,胶东金矿围岩蚀变年龄的测定,对于矿床成因的研究有重要意义。为解决胶东区域断裂热液蚀... 详细信息

胶东金矿是中生代构造岩浆活化区岩浆期后中温热液蚀变脉状矿床。前人曾认为该类金矿属于壳源深融花岗岩-热液石英脉-蚀变岩型金矿。近期研究表明,胶东金矿围岩蚀变年龄的测定,对于矿床成因的研究有重要意义。为解决胶东区域断裂热液蚀变年龄问题,对胶东半岛主要断裂矿化蚀变带开展如下相关研究:(1)选择胶东地区各蚀变岩带普遍发育的黄铁绢英岩化蚀变岩带和强钾长石化蚀变岩带作为取样目标,进行区域对比;(2)该两类岩石中的蚀变矿物受到脆性断裂影响较小,能够得到蚀变阶段的稳定化学成分;(3)该两类岩石中的蚀变矿物发育有与蚀变同期的韧性变形,能够揭示蚀变阶段的构造应力应变状态。对样品中的钾长石和斜长石颗粒进行K-Ar法同位素年龄测试,获得蚀变岩同位素年龄数据。测试结果显示,胶东区域构造热液蚀变作用时期为(148.3±4.3)^(52.03±0.70)Ma,即早白垩世燕山晚期;同位素年龄自西向东逐渐变小,证明胶东西部地区的热液蚀变作用早于东部地区。通过分析已有的构造、热液成分和成矿物理化学参数等资料,结合本研究的最新成果,总结出区域成矿时代与成矿规律:胶东区域断裂蚀变系统中的构造附加静水压力、流体温度压力条件和成矿元素的分布与变化控制了热液蚀变成矿规律。上述地质特征显示,胶东金矿床是复成构造热液作用下的一种新型矿床类型。

关键词：胶东金矿 K-Ar同位素年龄黄铁绢英质蚀变岩带钾长石化蚀变岩带复成构造热液作用

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胶东断裂蚀变带构造-流体成矿规律研究

地质论评 2016年第B11期62卷 317-318页

作者：吕承训吴淦国 norbert h. maerz Kenneth J. BOYKO Missouri University of Science and Technology MO USA 65401 中国地质大学(北京) 中国北京100083

胶东是目前中国最大的金矿集中区，矿床位于花岗岩与老地层之间的区域剪切断裂带，围岩是在花岗岩区段的断裂破碎蚀变岩带，成矿作用与岩浆期后热液交代直接有关。区域构造-流体研究的一个难题是：如何选择既能保证流体包裹体分析质量... 详细信息

胶东是目前中国最大的金矿集中区，矿床位于花岗岩与老地层之间的区域剪切断裂带，围岩是在花岗岩区段的断裂破碎蚀变岩带，成矿作用与岩浆期后热液交代直接有关。区域构造-流体研究的一个难题是：如何选择既能保证流体包裹体分析质量，又可以观测交代蚀变阶段构造应力应变的岩石样品。

关键词：胶东构造流体成矿规律

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胶东断裂蚀变带构造-流体的区域成矿特征

矿物学报 2015年第S1期35卷 1024-页

作者：吕承训吴淦国 norbert h.maerz Kenneth J.Boyko Missouri University of Science and Technology MOusa65401 中国地质大学(北京) 北京100083

胶东是目前中国最大的金矿集中区,矿床位于花岗岩与老地层之间的区域剪切断裂带,围岩是在花岗岩区段的断裂破碎蚀变岩带,成矿作用与岩浆期后热液交代直接有关。胶东金矿集中区东部为太平洋板块,西侧以郯庐断裂带为界,东南部由大别-苏鲁... 详细信息

胶东是目前中国最大的金矿集中区,矿床位于花岗岩与老地层之间的区域剪切断裂带,围岩是在花岗岩区段的断裂破碎蚀变岩带,成矿作用与岩浆期后热液交代直接有关。胶东金矿集中区东部为太平洋板块,西侧以郯庐断裂带为界,东南部由大别-苏鲁超高压变质带与胶南地体接触。胶东地区的断裂构造发育,主要断裂带方向多为NE向、NEE向和NNE向,其次为NW或近SN向(吕古贤,2001)。断裂带不仅提供了热液交代作用的构造空间,而且是矿液运移的通道。

关键词：成矿特征高压变质带断裂构造发育蚀变带郯庐断裂带蚀变岩交代作用太平洋板块鲁超剪切断裂

Improving the hydrostability of zeolitic imidazolate framework coatings using a facile silk fibroin protein modification method

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Nano Research 2024年第7期17卷 6247-6257页

作者： Xiuming Wei Ting Chen Siyu Chen Qian Jia Nurul Ain Mazlan Allana Lewis norbert Radacsi Yi huang School of Engineering Institute for Materials&ProcessesThe University of EdinburghRobert Stevenson RoadEdinburghEH93FBUK EASTChEM School of Chemistry The University of St AndrewsPurdie BuildingNorth HaughSt AndrewsKY169STUK

Zeolitic imidazolate frameworks(ZIFs)are an important subclass of metal-organic frameworks(MOFs)with zeolite-type topology,which can be fabricated under ambient synthesis ***,the applications of ZIFs are commonly limited due to the weak hydrostability of their metal–ligand coordination bonds,particularly under humid and aqueous *** this work,as an example,the hydrolysis behaviours of ZIF-L with a special focus on ZIF-L coatings were tested at aqueous conditions with a wide range of phs to systematically study and fundamentally understand their structural stability and degradation *** ZIF-L powder and ZIF-L coatings were severely damaged after only 24 h in aqueous ***,the ZIF-L coatings showed two distinct hydrolyzation pathways regardless of ph conditions,exhibiting either a ring-shaped etching or unfolding *** the ZIF-L powders were hydrolyzed almost identically across all ph *** this new understanding,a facile silk fibroin(SF)protein modification method was developed to enhance the hydrostability of ZIF-L coatings in aqueous *** effect of protein concentration on surface coating was systemically ***-L coating retained its surface morphology after soaking in water and demonstrated switchable super wetting properties and superior separation performance for oil/water *** a result,the quick SF protein modification significantly enhanced the stability of ZIF-L coatings under various phs,while retaining their switchable wetting property and excellent separation performance.

关键词： zeolitic imidazole framework-L(ZIF-L) ZIF-L coatings silk fibroin protein hydrostability enhancement oil/water separation

Development of an active-site titrant for SARS-CoV-2 main protease as an indispensable tool for evaluating enzyme kinetics

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2349-2357页

作者： Rabea Voget Julian Breidenbach Tobias Claff Alexandra hingst Katharina Sylvester Christian Steinebach Lan Phuong Vu Renato h.Weiße Ulrike Bartz norbert Sträter Christa E.Müller Michael Gütschow Pharmaceutical Institute Pharmaceutical&Medicinal ChemistryUniversity of BonnBonn 53121Germany Institute of Bioanalytical Chemistry Center for Biotechnology and BiomedicineLeipzig UniversityLeipzig 04103Germany Department of Natural Sciences University of Applied Sciences Bonn-Rhein-SiegRheinbach 53359Germany

A titrant for the SARS-CoV-2 main protease(M^(pro))was developed that enables,for the first time,the exact determination of the concentration of the enzymatically active M^(pro) by active-site *** covalent binding mode of the tetrapeptidic titrant was elucidated by the determination of the crystal structure of the enzyme–titrant *** fluorogenic substrates of M^(pro),including a prototypical,internally quenched Dabcyl-EDANS peptide,were compared in terms of solubility under typical assay *** exploiting the new titrant,key kinetic parameters for the M^(pro)-catalyzed cleavage of these substrates were determined.

关键词： COVID-19 SARS-CoV-2 Main protease Peptide nitriles Fluorogenic substrates Active-site titration X-ray crystallography Inner filter effect

Using machine learning models to explore the solution space of large nonlinear systems underlying flowsheet simulations with constraints

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Frontiers of Chemical Science and Engineering 2022年第2期16卷 183-197页

作者： Patrick Otto Ludl Raoul heese Johannes höller norbert Asprion Michael Bortz Fraunhofer ITWM Optimization Department Kaiserslautern 67663Germany Chemical and Process Engineering BASF SE Ludwigshafen 67056Germany

Flowsheet simulations of chemical processes on an industrial scale require the solution of large systems of nonlinear equations,so that solvability becomes a practical *** constraints from technical,economic,environmental,and safety considerations may further limit the feasible solution space beyond the convergence requirement.A priori,the design variable domains for which a simulation converges and fulfills the imposed constraints are usually unknown and it can become very time-consuming to distinguish feasible from infeasible design variable choices by simply running the simulation for each *** support the exploration of the design variable space for such scenarios,an adaptive sampling technique based on machine learning models has recently been ***,that approach only considers the exploration of the convergent domain and ignores additional *** this paper,we present an improvement which particularly takes the fulfillment of constraints into *** successfully apply the proposed algorithm to a toy example in up to 20 dimensions and to an industrially relevant flowsheet simulation.

关键词： machine learning flowsheet simulations constraints exploration

Decision support for the development,simulation and optimization of dynamic process models

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Frontiers of Chemical Science and Engineering 2022年第2期16卷 210-220页

作者： norbert Asprion Roger Böttcher Jan Schwientek Johannes höller Patrick Schwartz Charlie Vanaret Michael Bortz BASF SE 67063 LudwigshafenGermany Fraunhofer ITWM 67663 KaiserslauternGermany

Simulation is besides experimentation the major method for designing,analyzing and optimizing chemical *** ability of simulations to reflect real process behavior strongly depends on model *** and adaption of process models are usually based on available plant *** such a model in various simulation and optimization studies can support the process designer in his *** steady state models there is also a growing demand for dynamic models either to adapt faster to changing conditions or to reflect batch *** this contribution challenges of extending an existing decision support framework for steady state models to dynamic models will be discussed and the resulting opportunities will be demonstrated for distillation and reactor examples.

关键词： decision support multicriteria optimization model validation dynamic model sensitivity analysis

Enriching plant diversity in grasslands by large-scale experimental sward disturbance and seed addition along gradients of land-use intensity

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Journal of Plant Ecology 2017年第4期10卷 581-591页

作者： Valentin h.Klaus Deborah Schäfer Till Kleinebecker Markus Fischer Daniel Prati norbert hölzel Institute of Landscape Ecology Münster UniversityHeisenbergstr.248149 MünsterGermany Institute of Plant Sciences University of BernAltenbergrain 213013 BernSwitzerland

Aims The relationship between biodiversity and ecosystem functioning is among the most active areas of ecological ***,enhancing the diversity of degraded ecosystems is a major goal in applied restoration *** grasslands,many species may be locally absent due to dispersal or microsite limitation and may therefore profit from mechanical disturbance of the resident *** established a seed addition and disturbance experiment across several grassland sites of different land use to test whether plant diversity can be increased in these ***,the experiment will allow us testing the consequences of increased plant diversity for ecosystem processes and for the diversity of other taxa in real-world ***,we present details of the experimen-tal design and report results from the first vegetation survey 1 year after disturbance and seed ***,we tested whether the effects of seed addition and disturbance varied among grassland depending on their land use or pre-disturbance plant *** A full-factorial experiment was installed in 73 grasslands in three regions across *** were under regular agricul-tural use,but varied in the type and the intensity of management,thereby representing the range of management typical for large parts of Central *** disturbance treatment consisted of disturbing the top 10 cm of the sward using a rotavator or rotary *** addition consisted of sowing a high-diversity seed mixture of regional plant *** species were all regionally present,but often locally absent,depending on the resident vegetation composi-tion and richness of each *** Findings Seven months after sward disturbance,respective plots had significantly increased in bare soil,seedling species richness and number of *** addition had increased plant species richness,but only in combination with sward *** increase in species richness

关键词： grassland restoration germination microsite limitation seed limitation fertilization

Soil Stabilizing Capability of Three Plant Species Growing on the Three Gorges Reservoir Riverside

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Journal of Earth Science 2010年第6期21卷 888-896页

作者： norbert Tenten 曾波 Marian Kazda Key Laboratory of Eco-environments in Three Gorges Reservoir Region Ministry of Education School of Life Sciences Southwest China University Institute of Systematic Botany and Ecology Ulm University

Plant regrowth capacity and soil protection were investigated using three flooding-tolerant Yangtze River riverside species （Arundinella anomala, hemartria compressa and Cynodon dactylon）. The root and leaf surface growth, the plant regrowth capacity and the mitigation of soil runoff were analyzed using potted plants that were covered with 5, 10 and 18 cm new sediments, respectively. A. anomala reacted most slowly to the recovery from new sediments, while h. compressa had the highest recovery rates. The latter could produce 24 times the initial root length and 41 times its original leaf surface during the growth period of 12 weeks. C. dactyion showed no significant change in growth in relation to the rising sediment thickness, which means that even 18 cm of new sediments were tolerated by C. dactylon. Erosion tests showed that all three plant species can reduce the soil runoff by more than 63%. Compared to other species, A. anomala was less capable of stabilizing new sediments. The soil protecting abilities of h. compressa decreased after more than 10 cm of new sediments. C. dactyion showed the best soil retention compared to the other species examined, since it could reduce the soil runoff up to 87%. Consequently, C. dactylon was found to be significantly better for soil-protection plant species than A. anomala and h. compressa given the conditions at the Three Gorges Reservoir.

关键词： Three Gorges Reservoir plant regrowth capacity soil runoff soil stabilizing plantgrowth.