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Polymetamorphism of the ultrahigh-temperature granulites in the Rauer Group,East Antarctica:new evidence from zircon SHRIMP U-Pb ages

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Advances in Polar Science 2024年第2期35卷 192-205页

作者： TONG Laixi LIU Zhao LI Chao LU Junsheng yang wenqiang WANG Yanbin State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China Institute of Geology Chinese Academy of Geological SciencesBejing 100037China

The Rauer Group is located on the eastern margin of the early Paleozoic Prydz Belt in East Antarctica,and the typical ultrahigh-temperature(UHT,>900℃)granulites outcrop on Mather ***,the timing of UHT metamorphism and P–T path of the UHT granulites have long been debated,which is critical to understanding the tectonic nature and evolution history of the Prydz ***,both a sapphirine-bearing UHT metapelitic granulite and a garnet-bearing UHT mafic granulite are selected for zircon SHRIMP U-Pb age *** results show that metamorphic zircon mantles yield weighted mean^(206)Pb/^(238)U ages of 918±29 Ma and 901±29 Ma for the metapelitic and mafic granulites,respectively,while zircon rims and newly grown zircons yield weighted mean^(206)Pb/^(238)U ages of 523±9 Ma and 532±11 Ma,*** new zircon age data suggest that the UHT granulites may have experienced polymetamorphism,in which pre-peak prograde stage occurred in the early Neoproterozoic Grenvillian orogenesis(1000–900 Ma),whereas the UHT metamorphism occurred in the late Neoproterozoic to early Paleozoic Pan-African orogenesis(580–460 Ma).This implies that P–T path of the UHT granulites should consist of two separate high-grade metamorphic events including the Grenvillian and Pan-African events,which are supposed to be related to assembly of Rodinia and Gondwana supercontinents respectively,and hence the overprinting UHT metamorphic event may actually reflect an important intracontinental reworking.

关键词： ultrahigh-temperature granulites zircon SHRIMP U-Pb ages polymetamorphism Rauer Group East Antarctica

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GreenPhos,a universal method for in-depth measurement of plant phosphoproteomes with high quantitative reproducibility

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Molecular Plant 2024年第1期17卷 199-213页

作者： Xiaoxiao Duan Yuanya Zhang Xiahe Huang Xiao Ma Hui Gao Yan Wang Zhen Xiao Chengcheng Huang Zhongshu Wang Bolong Li wenqiang yang Yingchun Wang State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBejing 100101China University of Chinese Academy of Sciences Bejing 100049China Key Laboratory of Photobiology Instute of BotanyChinese Academy of SciencesBejing 100093China

Protein phosphorylation regulates a variety of important cellular and physiological processes in ***-depth profiling of plant phosphoproteomes has been more technically challenging than that of animal *** is largely due to the need to improve protein extraction efficiency from plant cells,which have a dense cell wall,and to minimize sample loss resulting from the stringent sample clean-up steps required for the removal of a large amount of biomolecules interfering with phosphopeptide purification and mass spectrometry *** this end,we developed a method with a streamlined workflow for highly efficient purification of phosphopeptides from tissues of various green organisms including Arabidopsis,rice,tomato,and Chlamydomonas reinhardtii,enabling in-depth identification with high quantitative reproducibility of about 11000 phosphosites,the greatest depth achieved so far with single liquid chromatography-mass spectrometry(LC-MS)runs operated in a data-dependent acquisition(DDA)*** mainstay features of the method are the minimal sample loss achieved through elimination of sample clean-up before protease digestion and of desalting before phosphopeptide enrichment and hence the dramatic increases of time-and *** method,named GreenPhos,combined with single-shot LC-MS,enabled in-depth quantitative identification of Arabidopsis phosphoproteins,including differentially phosphorylated spliceosomal proteins,at multiple time points during salt stress and a number of kinase substrate *** is expected to serve as a universal method for purification of plant phosphopeptides,which,if samples are further fractionated and analyzed by multiple LC-MS runs,could enable measurement of plant phosphoproteomes with an unprecedented depth using a given mass spectrometry technology.

关键词： plant phosphoproteomics phosphopeptides LC–MS Arabidopsis salt stress

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混杂纤维掺量对尾砂充填体力学性能的影响

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有色金属工程 2024年第3期14卷 168-176页

作者：杜朋昊张治强杨文强辽宁科技大学矿业工程学院辽宁鞍山114051 辽宁省金属矿产资源绿色开采工程研究中心辽宁鞍山114051

为了探究混杂纤维掺量对尾砂胶结充填体力学性能的增强效果,选取三种纤维材料进行坍落度、单轴压缩和SHPB冲击试验。结果表明:纤维材料对充填体流动性影响较大,纤维掺量越高时流动性越弱,其中聚丙烯纤维对流动性影响最显著;混杂纤维对... 详细信息

为了探究混杂纤维掺量对尾砂胶结充填体力学性能的增强效果,选取三种纤维材料进行坍落度、单轴压缩和SHPB冲击试验。结果表明:纤维材料对充填体流动性影响较大,纤维掺量越高时流动性越弱,其中聚丙烯纤维对流动性影响最显著;混杂纤维对充填体的动、静力学性能提高幅度均受混杂纤维掺量影响,在一定范围内随纤维掺量增高呈现先变大后减小的趋势,0.4%聚丙烯纤维对充填体早期抗压强度增幅最为显著,28 d标准养护龄期时钢纤维对充填体动、静力学性能的提高均大于另外两种纤维;总纤维掺量在1.4%~1.5%的混杂纤维对充填体动态抗压强度提高最大,提高幅度大于更高或更低纤维掺量的方案;在相同的平均应变率下,随着混杂纤维掺量增加,充填体的反射能和吸收能先减小后增大,透射能先增大后减小。适量的混杂纤维可以有效提高充填体的力学性能,有利于充填开采的安全性,同时对矿山充填体材料设计具有一定指导作用。

关键词：纤维材料尾砂胶结充填体 SHPB 力学性能

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Recent progress of precious-metal-free electrocatalysts for efficient water oxidation in acidic media

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Journal of Energy Chemistry 2020年第12期29卷 113-133页

作者： Samarjeet Singh Siwal wenqiang yang Qibo Zhang Key Laboratory of Ionic Liquids Metallurgy Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province Kunming 650093YunnanChina

The realization of efficient oxygen evolution reaction(OER) is critical to the development of multiple sustainable energy conversion and storage technologies, especially hydrogen production via water electrolysis. To achieve the massive application of hydrogen energy and mass-scale hydrogen production from water splitting drives the pursuit of competent precious-metal-free electrocatalysts in acidic media, where the hydrogen evolution reaction(HER) is more facilitated. However, the development of high-efficient and acid-stable OER electrocatalysts, which are robust to function stably at high oxidation potentials in the acidic electrolyte, remains a great challenge. This article contributes a focused, perceptive review of the up-to-date approaches toward this emerging research field. The OER reaction mechanism and fundamental requirements for oxygen evolution electrocatalysts in acid are introduced. Then the progress and new discoveries of precious-metal-free active materials and design concepts with regard to the improvement of the intrinsic OER activity are discussed. Finally, the existing scientific challenges and the outlooks for future research directions to the fabrication of emerging, earth-abundant OER electrocatalysts in acid are pointed out.

关键词： Electrocatalysts Non-noble metals Hydrogen production Water oxidation Acidic media

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全钢载重子午线轮胎胎冠全息气泡的原因分析与解决措施

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轮胎工业 2024年第4期44卷 242-244页

作者：柳青杨文强龚超双钱集团(新疆)昆仑轮胎有限公司新疆乌鲁木齐830000

分析全钢载重子午线轮胎胎冠全息气泡的产生原因,并提出相应的解决措施。成品轮胎胎冠全息气泡产生于带束层之间及胎面与带束层之间,主要原因是半成品粘性波动,滚压轨迹不合理会加剧此病象产生。通过调整胶料粘性以及优化成型装备结构... 详细信息

分析全钢载重子午线轮胎胎冠全息气泡的产生原因,并提出相应的解决措施。成品轮胎胎冠全息气泡产生于带束层之间及胎面与带束层之间,主要原因是半成品粘性波动,滚压轨迹不合理会加剧此病象产生。通过调整胶料粘性以及优化成型装备结构和压合轨迹,基本可以解决此类问题。

关键词：全钢载重子午线轮胎胎冠全息气泡胎面带束层

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川西稻城岩体北部花岗岩年代学、地球化学和成岩构造环境

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地球科学 2024年第6期49卷 1966-1982页

作者：程顺波王晓地崔森赵武强杨文强刘浩刘君豪胥明中国地质调查局武汉地质调查中心湖北武汉430205 中国地质调查局花岗岩成岩成矿地质研究中心湖北武汉430205 核工业280研究所四川德阳618300

川西稻城岩体北部花岗岩成因和成岩构造环境争议较大.本次工作选择该岩基北部花岗岩为研究对象,进行了岩石学、锆石U-Pb年代学、地球化学和Hf同位素研究.LA-ICP-MS锆石U-Pb测年结果显示,岩体北部花岗岩形成时代213~212 Ma,略晚于南部.... 详细信息

川西稻城岩体北部花岗岩成因和成岩构造环境争议较大.本次工作选择该岩基北部花岗岩为研究对象,进行了岩石学、锆石U-Pb年代学、地球化学和Hf同位素研究.LA-ICP-MS锆石U-Pb测年结果显示,岩体北部花岗岩形成时代213~212 Ma,略晚于南部.岩性以花岗闪长岩和二长花岗岩为主,前者含较多暗色微粒包体(mafic microgranular enclaves,MME).代表性样品地球化学上具有富钠、偏铝-弱过铝质、富大离子亲石元素的特征.ε_(Hf)(t)值非常分散,介于-16.6~-2.4(均值-5.0),对应的t_(2DM)为2.04~1.25 Ga(均值1.4).结合区域地质证据分析,稻城岩体为I型花岗岩,其源区以中元古代康定群变质玄武岩为主,酸性端元含较多变质杂砂岩.花岗岩的形成与后造山环境下俯冲板片断离导致的软流圈上涌、中下地壳受烘烤部分熔融关系密切.

关键词：构造环境花岗岩古特提斯三叠纪稻城川西岩石学

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发电厂冷却工艺用水发展现状与展望

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工业水处理 2024年第4期44卷 46-57页

作者：刘欣刘玮龙国军张天成杨文强西安热工研究院有限公司陕西西安710054 华能烟台八角热电有限公司山东烟台265503

冷却工艺用水是发电厂总用水量的主要部分。随着全球淡水资源持续紧缺,改进冷却工艺系统、提高冷却水使用效率的必要性和迫切性日益凸显。从多个方面对发电厂冷却工艺节约用水进行了论述,概述了现有冷却工艺的局限性;介绍了对发电厂冷... 详细信息

冷却工艺用水是发电厂总用水量的主要部分。随着全球淡水资源持续紧缺,改进冷却工艺系统、提高冷却水使用效率的必要性和迫切性日益凸显。从多个方面对发电厂冷却工艺节约用水进行了论述,概述了现有冷却工艺的局限性;介绍了对发电厂冷却系统进行改进和优化以实现节水、降耗的新工艺;探讨了以海水和再生水为代表的非传统水源应用于冷却系统的可能性,以及将其应用于冷却工艺时可能面临的复杂性和挑战;介绍了冷却水处理和水质监测的关键技术,阐述了相关技术改进所能带来的节水效果;最后提出了冷却水管理方面存在的机遇与挑战。

关键词：冷却水再生水海水冷却发电厂

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Early Paleozoic granitic magmatism related to the processes from subduction to collision in South Altyn, NW China

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Science China Earth Sciences 2015年第8期58卷 1513-1522页

作者： LIU Liang KANG Lei CAO YuTing yang wenqiang State Key Laboratory of Continental Dynamics Department of Geology Northwest University Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals College of Earth Science & EngineeringShandong University of Science and Technology

Four episodes of granitic rocks at 517, 501-496, 462-451, and 426-385 Ma occurred in the South Altyn subduction-collision complex. The first episode of granite emplacement predates the formation of the ophiolite type mafic rock （〉500 Ma）, and the three subsequent episodes can be temporally correlated to high-pressure （HP） to ultrahigh-pressure （UHP） metamorphism at ca 500 Ma, retrograde granulite-facies metamorphism at ca. 450 Ma, and amphibolite-facies metamorphism at ca. 420 Ma, re- spectively. A comprehensive study of these granitic rocks, along with the regional geological background, mafic-ultramafic rocks, and HP-UHP metamorphism, indicates that the four episodes of granitic magmatism are sequentially derived from the partial melting of the earlier subducted oceanic crust at 517 Ma, the thickened continental crust due to continental subduction at ca. 500 Ma, the mid-upper crust in response to slab breakoff at ca. 450 Ma, and the tectonic transition from contraction to extension at ca. 420 Ma. The formation age of 517 Ma for oceanic adakite provides a direct constraint on the time of the oce- anic subduction in South Altyn. In addition, there is a ca. i0 Myr interval between the oceanic subduction to the continental deep subduction, suggesting that the Early Paleozoic tectonic evolution might have been a successive process in South Altyn. The four episodes of formation of granitic rocks, mafic-ultramafic rocks, and HP-UHP metamorphic rocks have fully recorded the tectonic evolution, beginning with the oceanic subduction, followed by continental subduction, and later exhumation dur- ing the Early Paleozoic in South Altyn.

关键词： South Altyn granitic magmatism oceanic subduction continental deep subduction tectonic evolution

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国产防老剂4020在全钢载重子午线轮胎胎体胶中的应用

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轮胎工业 2024年第8期44卷 484-486页

作者：柳青杨文强王广成双钱集团(新疆)昆仑轮胎有限公司新疆乌鲁木齐831400

研究国产防老剂4020在全钢载重子午线轮胎胎体胶中的应用。结果表明:采用国产防老剂4020等量替代进口防老剂4020,胶料的门尼粘度减小,Fmax增大,t90缩短;硫化胶的拉伸性能、撕裂强度和粘合性能相当,压缩生热略有降低;成品轮胎的耐久性能... 详细信息

研究国产防老剂4020在全钢载重子午线轮胎胎体胶中的应用。结果表明:采用国产防老剂4020等量替代进口防老剂4020,胶料的门尼粘度减小,Fmax增大,t90缩短;硫化胶的拉伸性能、撕裂强度和粘合性能相当,压缩生热略有降低;成品轮胎的耐久性能提高,原材料成本降低。

关键词：防老剂全钢载重子午线轮胎胎体胶粘合性能成本

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Zircon U-Pb Geochronological Evidence for the Evolution of the Nan-Uttaradit Suture in Northern Thailand

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Journal of Earth Science 2016年第3期27卷 378-390页

作者： wenqiang yang Xin Qian Qinglai Feng Shangyue Shen Chongpan Chonglakmani Wuhan Center of Geological Survey Wuhan 430205China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China School of Earth Sciences China University of GeosciencesWuhan 430074China School of Geotechnology Suranaree University of TechnologyNakhon Ratchasima 30000Thailand

The Nan-Uttaradit suture is marked by a narrow N-S trending and discontinuous ophiolite belt in northern Thailand. This suture zone is a mélange composed of gabbro, tholeiitic meta- basalt, andesite and radiolarian chert. Samples of gabbro and meta-basalt in the Nan-Uttaradit suture yield zircon U-Pb ages of 311±10 and 316±3 Ma, respectively, interpreted as the crystallization ages of the rocks, suggesting the Nan-Uttaradit Ocean existed in the Late Carboniferous. Our results indicate that the Nan-Uttaradit Ocean co-existed with the Ailaoshan-Jinshajiang Ocean to the north and was probably an along-strike extension of the latter.

关键词： Nan-Uttaradit suture ophiolite mélange zircon U-Pb age northern Thailand

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