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Unusual uranium biomineralization induced by green algae: Behavior investigation and mechanism probe

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Journal of Environmental Sciences 2023年第2期124卷 915-922页

作者： Yanxia Cheng Ting Zhang Shunzhang Chen Feize li renwei Qing Tu Lan Yuanyou Yang Jiali liao Ning liu Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China Key Laboratory of Bio-Resource and Eco-Environment of the Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065China

As a biosorbent,algae are frequently used for the biotreatment or bioremediation of water contaminated by heavymetal or ***,it is unclear that whether or not the biomineralization of these metal or radionuclides can be induced by algae in the process of bioremediation and what the mechanism *** this work,Ankistrodsemus *** been used to treat the uranium-contaminated water,and more than 98%of uranium in the solution can be removed by the alga,when the initial uranium concentration ranges from 10 to 80 mg/***,an unusual phenomenon of algae-induced uranium biomineralization has been found in the process of uranium bioremediation and its mineralization mechanism has been explored bymultiple *** is worth noticing that the biomineralization of uranium induced by Ankistrodsemus *** significantly affected by contact time and *** is captured rapidly on the cell surface via complexation with the carboxylate radical,amino and amide groups of themicroalgae cells,which provides nucleation sites for the precipitation of *** stimulates Ankistrodsemus *** metabolize potassium ions(K+),which may endow algae with the ability to biomineralize uranium into the rose-like compreignacite(K_(2)[(UO_(2))6O_(4)(OH)_(6)]•8H_(2)O).As the time increased,the amorphous gradually converted into compreignacite crystals and a large number of crystals would expand over both inside and outside the *** the best of our knowledge,this is the first investigated microalgae with a time-dependent uranium biomineralization ability and superior tolerance to *** work validates that Ankistrodsemus *** a promising alga for the treatment of uranium-contaminated wastewater.

关键词： Uranium algae Ankistrodesmus sp. Biomineralization

Geochronology of source materials from high-pressure and ultrahigh-pressure metamorphic rocks in Jurassic sedimentary rocks of Hefei Basin

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Geochronology of source materials from high-pressure and ult...

Continuous Preparation of Chitosan‑Based Self‑Powered Sensing Fibers Recycled from Wasted Materials for Smart Home Applications

中国科学院地质与地球物理研究所2003学术年会

作者： li renwei~1,SANG Haiqing~1,ZHANG Renhu~1, CHU Zhuyin~1,li Shuangyin~2,JIN Fuquan~2 & JIANG Maosheng~1 1.Institute of Geology and Geophysics.Chinese Academy of Sciences, Beijing 100029.China `2.Department of Resource and Environment Sciences.Hefei Industrial University.Hefei 230026.China

In this report,it is proven through stable isotopic geoehronological study that for the Jurassic sedimentary rocks in the Dushan area of Anhui Province,the source materials derived from high-pressure and ultrahigh-pressure metamorphic rocks are the products of subduction and exhumation of the Yangtze plate under the North China plate during the Triassic *** cobble of high-pressure or ultrahigh-pressure metamorphic rock in the Fenghuangtai Formation of Hefei Basin has Rb-Sr isotopic isochron age of phengite,apatite and whole rock,232.1±2.1 Ma(MSWD= 0.59).Plateau ages of Ar/Ar age spectra of detrital phengites in the Sanjianpu and Fenghuangtai formations are concordant,and they are 216.5±0.6 Ma and 217.4±1.3 Ma, respectively.

关键词： Dabie orogenesis Hefei Basin source materials high-pressure and ultrahigh-pressure metamorphic rocks isotopic ages

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Advanced Fiber Materials 2022年第6期4卷 1584-1594页

作者： Yingying li Chuanhui Wei Yang Jiang renwei Cheng Yihan Zhang Chuan Ning Kai Dong Zhong lin Wang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro‑Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400People’s Republic of China Center On Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Material Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332‑0245USA

Currently,the gradual depletion of fossil resources and the large amount of plastic waste are causing serious harm to the land and marine *** rapid development of wearable smart fibers is accompanied by rapid growth in the material demand for fibers,and the development of green and high-performance biomass-based fibers has become an important research topic to reduce the dependence on synthetic fiber materials and the harm to the ***,chitosan is first prepared from the waste material by chemical *** the chitosan-based self-powered induction fibers are prepared by electrospinning core wire ***-based self-powered sensing fiber is ultra-light and flexible,which can achieve about 2500 collisions without damaging the ***-based self-powered sensing fiber can also be used in smart home sensing applications to control home appliance switches with a light touch,which has a great application prospect in smart home and wearable fields.

关键词： Recycled wasted materials Chitosan nanofibers Electrospinning Self-powered sensing Smart home

肥—潢川盆地南缘中生代冲积沉积及其构造意义

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地质学报 2005年第4期79卷 465-474页

作者：李双应王道轩刘因李任伟孟庆任岳书仓金福全合肥工业大学资源与环境工程学院 230009 中国科学院地质与地球物理研究所北京100029

合肥—潢川盆地南缘中生代地层被划分为4个年代体(Chronsome)。年代体包括早侏罗世防虎山组和中晚侏罗世圆筒山组下部,由辫状河、曲流河以及滨-浅湖沉积体系组成,局限于盆地东端;年代体包括中—晚侏罗世三尖铺组、朱集组和圆筒山组上部... 详细信息

合肥—潢川盆地南缘中生代地层被划分为4个年代体(Chronsome)。年代体包括早侏罗世防虎山组和中晚侏罗世圆筒山组下部,由辫状河、曲流河以及滨-浅湖沉积体系组成,局限于盆地东端;年代体包括中—晚侏罗世三尖铺组、朱集组和圆筒山组上部,下部为冲积扇沉积,中、上部为辫状河沉积,早期属于横向水流系统(南北方向),晚期是纵向水流系统(东西方向),近EW向的信阳—金寨—舒城断裂是其南部边界;年代体包括早白垩世早期凤凰台组、段集组、周公山组,前两组为冲积扇沉积,后者为辫状河和越岸沉积,粗碎屑明显向盆进积达数公里,南部边缘发育横向水流,而往盆地方向发育纵向水流。年代体为早白垩世晚期黑石渡组和陈棚组,南部边界是磨子潭—晓天断裂和桐柏—商城断裂,断裂以伸展—走滑为主,东段早期为冲积扇—扇三角洲沉积,晚期为深湖浊积岩沉积。晚白垩世沉积仅发育在西段局部地区,其余处于隆升状态。平行于大别山造山带的近EW向纵向断裂控制着年代体的南部边界,NE向郯城—庐江断裂和商城—麻城断裂控制着年代体侧向相的变化。合肥—潢川盆地南缘沉积从东往西逐渐超覆,揭示大别造山带折返具有自东而西的递进特征。郯城—庐江断裂和商城—麻城断裂对年代体的发育有明显影响,郯城—庐江断裂控制着早侏罗世沉积,表明构造活动至少始于早侏罗世。

关键词：沉积体系年代体构造作用中生代合肥潢川盆地大别造山带中生代地层冲积扇盆地构造意义

Secular variations in carbon isotopic compositions of carbonates from Proterozoic successions in the Ming Tombs Section of the North China Platform

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Secular variations in carbon isotopic compositions of carbon...

穴位持续经皮电刺激对肺癌手术麻醉药物用量、麻醉恢复质量的影响

中国科学院地质与地球物理研究所2003学术年会

作者： li renwei~(a,*),Chen Jenshi~a,Zang Shukun~b,Chen Zhimig~a a Institute of Geology and Geophysics,Chinese Academy of Sciences,P.O.Box 9825,Beijing 100029.People’s Republic of China b Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,People’s Republic of China

Thick,Proterozoic,unmetamorphosed carbonate-dominated successions are widely distributed in the North China *** Ming Tombs Section near Beijing is a well-studied stratigraphic section and has been selected for the study of secular variations in the carbon isotopic composition of marine *** ascending order,this section includes the Changzhougou,Chuanlinggou,Tuanshanzi, Dahongyu and Gaoyuzhuang formations in the Changcheng Group;the Yangzhuang,Wumishan,Hongshuizhung,and Tieling formations in the Jixian Group;and the Jing’eryu Formation in the Qingbaikou *** the depositional ages of the Changzhougou,Chuanlinggou and Tuanshanzi formations of the Changcheng Group are older than 1600 Ma,the Gaoyuzhuang,Yangzhuang and Wumishan formations belong to the Mesoproterozoic Era with ages evidently greater than～1300-1200 Ma,and the Jing’eryu Formation of the Qingbaikou Group were deposits of the early Neoproterozoic Era.δC values vary only within a narrow range between - 1.6 and + 1.5 permil in the early Mesoproterzoic Gaoyuzhuang,Yangzhuang and Wumishan *** variation inδC of carbonates from the early Neoproterozoic Jing’eryu Formation is more significant,showing values from -0.5 to +3.3 *** secular variations inδC values of carbonates from the Proterozoic successions in the Ming Tombs Section can be broadly correlated with those in the Jixian Section of the North China *** compare well with the established global isotopic curve of the Mesoproterozoic and Neoproterozoic eras.

关键词： Carbon isotopes Proterozoic North China Chemostratigraphic correlation

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新中医 2024年第8期56卷 165-170页

作者：郑雪梅黄仁微章吕霞温州医科大学附属第一医院麻醉复苏室浙江温州325000

目的:观察持续经皮电刺激合谷、内关和足三里穴在肺癌手术辅助麻醉中的应用效果。方法:将行全身麻醉下肺癌根治术患者103例随机分为观察组52例与对照组51例。2组均在常规麻醉下行肺癌根治术治疗。麻醉期间观察组取双侧合谷、内关和足三... 详细信息

目的:观察持续经皮电刺激合谷、内关和足三里穴在肺癌手术辅助麻醉中的应用效果。方法:将行全身麻醉下肺癌根治术患者103例随机分为观察组52例与对照组51例。2组均在常规麻醉下行肺癌根治术治疗。麻醉期间观察组取双侧合谷、内关和足三里穴,予以持续经皮电刺激治疗;对照组在相应穴位放置电极片,但无电流刺激。比较2组围手术期[麻醉诱导前10 min(T0)、切皮时(T1)、打开胸膜腔时(T2)、术毕时(T3)、完全苏醒时(T4)]血流动力学指标[心率(HR)、平均动脉压(MAP)]、术中麻醉药物用量、术后麻醉恢复质量、疼痛情况[疼痛视觉模拟评分法(VAS)评分]及不良反应发生情况。结果:T0~T4时间点,2组HR、MAP比较,差异均无统计学意义(P>0.05)。观察组丙泊酚、瑞芬太尼用量低于对照组(P0.05)。观察组术毕至苏醒时间、拔管时间、下床活动时间、肛门排气时间均短于对照组(P0.05)。48 h内观察组镇痛泵按压次数少于对照组(P<0.05)。术后,观察组不良反应总发生率为7.69%,对照组为29.41%,2组比较,差异有统计学意义(P<0.05)。结论:持续经皮电刺激合谷、内关和足三里穴可减少肺癌手术中麻醉药物用量、提高麻醉恢复质量,且有利于减轻术后疼痛、减少麻醉所带来的不良反应。

关键词：全身麻醉肺癌根治术经皮穴位电刺激合谷内关足三里麻醉恢复质量

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危险边坡智能监测及预报警综合系统的构建

江汉大学学报（自然科学版） 2020年第2期48卷 86-96页

作者：梅天灿左治江王刚李仁威李连杰武汉大学电子信息学院湖北武汉430072 江汉大学机电与建筑工程学院湖北武汉430056

采用激光雷达技术、光纤光栅传感技术、视频监控和GNNS时间同步技术,构建了危险边坡路段的智能监测及预报警综合系统。该系统集光电技术、计算机软件技术、信息处理技术、控制技术和通讯技术于一体,由1个监控中心、1个现场监控中心和4... 详细信息

采用激光雷达技术、光纤光栅传感技术、视频监控和GNNS时间同步技术,构建了危险边坡路段的智能监测及预报警综合系统。该系统集光电技术、计算机软件技术、信息处理技术、控制技术和通讯技术于一体,由1个监控中心、1个现场监控中心和4个功能模块组成。激光雷达系统对监控区域内异物入侵实时监测及报警,光纤光栅传感系统对边坡落石灾害进行预警及报警,高清日夜转换监控摄像头对现场监控和确认灾害,GNSS时间同步功能模块可实现系统内部的精确对时。监控中心和现场监控中心系统将4个模块集成,保证各模块的协同工作。该系统的应用可全天候实时发布预警,能提高监测效率和质量,达到预防灾害和减小灾害的目的。

关键词：激光雷达光纤光栅视频监控 GNNS 边坡监测

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智能割草机自主导航关键技术的研究综述

机电工程技术 2024年第7期53卷 41-45页

作者：马坚洪陈学永江仁伟林鹏李跃丹福建农林大学机电工程学院福州350100

首先介绍了智能割草机市场规模和发展前景,然后概述了国内外主流智能割草机产品的功能和使用技术。随后对智能割草机采用的全球导航卫星系统导航(GNSS)、机器视觉导航、激光雷达导航和多传感器融合定位导航等4类导航技术的研究现状进行... 详细信息

首先介绍了智能割草机市场规模和发展前景,然后概述了国内外主流智能割草机产品的功能和使用技术。随后对智能割草机采用的全球导航卫星系统导航(GNSS)、机器视觉导航、激光雷达导航和多传感器融合定位导航等4类导航技术的研究现状进行了介绍,并对它们的优势和不足进行了概括分析。研究结果显示,多传感器融合定位导航是智能割草机未来导航发展的方向。接下来介绍了智能割草机所采用的PID控制和纯跟踪算法控制等2种导航策略的研究现状。最后对智能割草机存在的问题和未来发展方向进行了总结和展望。

关键词：草坪维护智能割草机导航技术导航控制策略

新医科背景下病理学课程“五融合”教学模式的探索与实践

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继续医学教育 2024年第2期38卷 29-32页

作者：吕洋李秀娟金春亭白美玲郭任伟李美玉河北北方学院基础医学课程思政教学研究中心河北张家口075000

在新医科背景下,医学生的培养侧重于“服务于国家战略,强化学科交叉融合,构建大医学格局”。因此,培养医学生不仅要注重知识的更新与交叉融合,更要重视塑造其适应变化的能力和创新能力。根据复合性、应用性、灵活性的新医科人才培养目标... 详细信息

在新医科背景下,医学生的培养侧重于“服务于国家战略,强化学科交叉融合,构建大医学格局”。因此,培养医学生不仅要注重知识的更新与交叉融合,更要重视塑造其适应变化的能力和创新能力。根据复合性、应用性、灵活性的新医科人才培养目标,河北北方学院病理学课程建立了以理论与实践相融合、基础与临床相融合、教学内容与课程思政相融合、基于教学主题的学科与学科相融合、第一课堂与第二课堂相融合的“五融合”教学模式,并优化教学大纲,充分利用医学形态学数字化教学平台及学习通网络教学平台等教学资源库,加强信息化平台的建设和使用,更新教学观念,构建创新课程评价体系,进一步加强学生自主学习能力,提升教师教学创新能力和专业水平,从而提升病理学课程的教学效果和质量。

关键词：新医科病理学理论与实践基础与临床数字化教学融合