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Geological context and vents morphology in the ultramafic-hosted Tianxiu field, Carlsberg Ridge

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Acta Oceanologica Sinica 2023年第9期42卷 62-70页

作者： Jin Liang Chunhui Tao xiangxin wang Cheng Su Wei Gao Yadong Zhou Weikun Xu Xiaohe Liu Zhongjun Ding Key Laboratory of Submarine Geosciences Ministry of Natural ResourcesHangzhou 310012China Second Institute of Oceanography Ministry of Natural ResourcesHangzhou 310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China National Deep Sea Center Qingdao 266237China School of Earth Sciences Zhejiang UniversityHangzhou 310027China Ocean College Zhejiang UniversityZhoushan 316021China

The Tianxiu hydrothermal field(TXHF) located on Carlsberg Ridge is one of the few active ultramafic-hosted venting systems known in the Indian Ocean. Despite numerous investigations, there is limited understanding of its sulfide structure morphology, and the factors controlling the formation of TXHF are poorly understood. In this study, we conducted detailed seafloor mapping using visual data obtained by dives using the human-occupied vehicle(HOV) Jiaolong. The TXHF is found to be an active, off-axis, ultramafic-hosted, high-temperature hydrothermal area in which serpentine peridotite is exposed. Two main hydrothermal sites were identified, i.e., P and Y, both of which feature a complex of chimneys and beehive diffusers constituting a “chimney jungle” and isolated large steep-sided structures developed on flat-lying sulfide mounds. In addition, some sporadic inactive chimneys and outcrops of hydrothermal deposits were noted. The chimneys are rich in Fe and Zn sulfide, and lack the central fluid channel formed by focused high-temperature fluid flow. Hydrothermal venting at TXHF is likely related to low-angle detachment faults that focus and transport hydrothermal fluids away from a heat source along the valley wall. Our results complement and expand upon previous works concerning sulfide chimney morphology and their corresponding mineral paragenesis in ultramafic-hosted hydrothermal systems in the Indian Ocean and further our understanding of modern seafloor hydrothermal systems.

关键词： hydrothermal activity sulfide accumulation morphology ultramafic-hosted Carlsberg Ridge

Integrated sensor based on acoustics-electricity-mechanics coupling effect for wireless passive gas detection

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Nano Research 2023年第2期16卷 3130-3141页

作者： Licheng Zhou Bohui Zhai Zhixiang Hu Mingqi Zhang Long Li xiangxin wang Guangzu Zhang Jingting Luo Honglang Li Bingbing Chen Shenglin Jiang Hua-Yao Li Huan Liu School of Optical and Electronic Information Wuhan National Laboratory for OptoelectronicsOptics Valley LaboratoryHuazhong University of Science and TechnologyWuhan 430074China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen Virtual University ParkShenzhen 518000China Key Laboratory of Optoelectronic Devices and Systems College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China School of Energy Science and Engineering Nanjing Tech UniversityNanjing 211816China

Integrated sensor combines multiple sensor functions into a single unit,which has the advantages of miniaturization and better application ***,limited by the sensing platforms of the sensor and the selectivity of the sensitive film,there are still challenges to realize multi-component gas detection in one ***,a principle integration method is proposed to achieve the multi-component gas detection based on the acoustics-electricity-mechanics coupling *** electrical and mechanical properties of the Bi_(2)S_(3)nanobelts materials in different atmospheres indicate the possibility of realizing the principle *** the same time,the surface acoustic wave(SAW)sensor as a multivariable physical transducer can sense both electrical and mechanical *** exposure to 10 ppm NO_(2),NH_(3),and their mixtures,the integrated SAW gas sensor shows a 4.5 kHz positive frequency shift(acoustoelectric effect),an 11 kHz negative frequency shift(mechanics effects),and a reduced 4 kHz negative frequency shift(acoustics-electricity-mechanics coupling effect),***,we realize wireless passive detection of NO_(2)and NH_(3)based on the SAW *** work provides valuable insights that can serve as a guide to the design and fabrication of single sensors offering multi-component gas detection via different gas sensing mechanisms.

关键词： integrated gas sensor bismuth sulfide surface acoustic wave coupling effect wireless passive

Resting-state brain network remodeling after different nerve reconstruction surgeries:a functional magnetic resonance imaging study in brachial plexus injury rats

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Neural Regeneration Research 2025年第5期20卷 1495-1504页

作者： Yunting Xiang xiangxin Xing Xuyun Hua Yuwen Zhang Xin Xue Jiajia Wu Mouxiong Zheng He wang Jianguang Xu School of Rehabilitation Science Shanghai University of Traditional Chinese MedicineShanghaiChina Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghaiChina Department of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Department of Traumatology and Orthopedics Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of EducationShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Distinct brain remodeling has been found after different nerve reconstruction strategies,including motor representation of the affected ***,differences among reconstruction strategies at the brain network level have not been *** study aimed to explore intranetwork changes related to altered peripheral neural pathways after different nerve reconstruction surgeries,including nerve repair,endto-end nerve transfer,and end-to-side nerve ***–Dawley rats underwent complete left brachial plexus transection and were divided into four equal groups of eight:no nerve repair,grafted nerve repair,phrenic nerve end-to-end transfer,and end-to-side transfer with a graft sutured to the anterior upper ***-state brain functional magnetic resonance imaging was obtained 7 months after *** independent component analysis algorithm was utilized to identify group-level network components of interest and extract resting-state functional connectivity values of each voxel within the *** in intra-network resting-state functional connectivity were compared among the *** muscle reinnervation was assessed by behavioral observation(elbow flexion)and *** results showed that alterations in the sensorimotor and interoception networks were mostly related to changes in the peripheral neural *** repair was related to enhanced connectivity within the sensorimotor network,while end-to-side nerve transfer might be more beneficial for restoring control over the affected limb by the original motor *** thalamic-cortical pathway was enhanced within the interoception network after nerve repair and end-to-end nerve *** areas related to cognition and emotion were enhanced after end-to-side nerve *** study revealed important brain networks related to different nerve *** networks may be potential targets for enhancing motor recovery.

关键词： brain functional networks end-to-end nerve transfer end-to-side nerve transfer independent component analysis nerve repair peripheral plexus injury resting-state functional connectivity

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飞秒强激光经氩气和氩团簇的传播

光子学报 2005年第7期34卷 961-963页

作者：王向欣王成李邵辉倪国权徐至展中国科学院上海光学精密机械研究所上海201800

通过数值求解三维电场传播方程,理论模拟了飞秒强激光脉冲(50fs,1016w/cm2)在氩气和中等尺寸氩团簇中的传播效应.结果表明,飞秒强激光脉冲经氩气传播将发生频谱蓝移展宽和光束发散;而经中等尺寸氩团簇传播,则存在一定程度的自聚焦效应.

关键词：非线性光学飞秒激光氩气氩团簇

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脉冲啁啾对于阿秒脉冲的影响

光子学报 2005年第5期34卷 641-643页

作者：王向欣王成李邵辉刘建胜徐至展中国科学院上海光学精密机械研究所上海201800

采用单电子近似和软核势模型,通过数值求解一维含时薛定谔方程,理论研究了当脉冲分别带有正、负啁啾的情况下所产生的阿秒脉冲.分析了不同脉冲啁啾特性对阿秒脉冲的强度和宽度的影响研究结果表明,无论是正啁啾还是负啁啾,随着啁啾量的... 详细信息

采用单电子近似和软核势模型,通过数值求解一维含时薛定谔方程,理论研究了当脉冲分别带有正、负啁啾的情况下所产生的阿秒脉冲.分析了不同脉冲啁啾特性对阿秒脉冲的强度和宽度的影响研究结果表明,无论是正啁啾还是负啁啾,随着啁啾量的增加,都将使激光脉冲由产生单个阿秒脉冲趋向于产生阿秒脉冲链正啁啾和负啁啾对于阿秒脉冲宽度的影响是不同的,负啁啾对于阿秒脉冲宽度影响很小,适当的负啁啾有利于缩小阿秒脉冲的宽度;而正啁啾脉冲产生的阿秒脉冲较无啁啾时展宽,且随着啁啾量的增加,其阿秒脉冲宽度迅速增大。

关键词：非线性光学阿秒脉冲啁啾脉冲软核势模型

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论现代国有企业的行政工作体系建设

现代管理 2014年第5期4卷 94-97页

作者：王向新中国电子科技集团公司第三十八研究所合肥

随着我国全面深化改革工作的启动,国有企业改革的号角已经吹响。传统的行政工作体系已不能适应现代企业制度建立背景下国有企业所面对的新挑战和要求,新的行政工作体系亟需建立,要突破传统的工作内容和工作方式,在三重一大、简政放权、... 详细信息

随着我国全面深化改革工作的启动,国有企业改革的号角已经吹响。传统的行政工作体系已不能适应现代企业制度建立背景下国有企业所面对的新挑战和要求,新的行政工作体系亟需建立,要突破传统的工作内容和工作方式,在三重一大、简政放权、政策研究、信息统筹等方面加以拓展。

关键词：国企改革行政工作体系现代企业制度

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剪切变形方式对取向硅钢织构和磁性的影响

钢铁 2000年第4期35卷 40-43页

作者：刘刚齐克敏王福梁志德王向欣叶久美中国科学院金属研究所东北大学武汉钢铁(集团)公司

采用异步轧制将经过一次正常冷轧和中间退火的 0 .75 m m厚的工业取向硅钢板材异步冷轧至不同的厚度 ,然后进行工业退火 ,研究剪切变形方式对板材织构和磁性的影响。结果表明 :异步轧制下 ,作用于搓轧区上的剪切应力能够有效地改善板材... 详细信息

采用异步轧制将经过一次正常冷轧和中间退火的 0 .75 m m厚的工业取向硅钢板材异步冷轧至不同的厚度 ,然后进行工业退火 ,研究剪切变形方式对板材织构和磁性的影响。结果表明 :异步轧制下 ,作用于搓轧区上的剪切应力能够有效地改善板材心部的织构组态 ,并在板材亚表层附近相对较大的区域内形成了理想的冷轧织构 ;退火后板材内重新形成了取向集中的 Goss织构 ,其磁性均不低于常规轧制。

关键词：异步轧制取向硅钢织构磁性剪切变形方式

超高效液相色谱-紫外检测法测定婴幼儿配方乳粉中的核苷酸含量

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食品科学 2021年第4期42卷 254-262页

作者：王象欣单艺魏雪冬李文斌鄂来明姜毓君东北农业大学食品学院乳品科学教育部重点实验室黑龙江哈尔滨150030 东北农业大学黑龙江省绿色食品科学研究院黑龙江哈尔滨150028 国家乳制品质量监督检验中心黑龙江哈尔滨150028 天津迪科马实验设备有限公司天津300402

采用磺酸甜菜碱型两性离子亲水相互作用色谱法,建立婴幼儿配方乳粉中5种核苷酸(5’-胞嘧啶核苷酸、5’-尿嘧啶核苷酸、5’-腺嘌呤核苷酸、5’-次黄嘌呤核苷酸、5’-鸟嘌呤核苷酸)的测定方法。使用二维固相萃取模式,弱阴离子交换和强阳... 详细信息

采用磺酸甜菜碱型两性离子亲水相互作用色谱法,建立婴幼儿配方乳粉中5种核苷酸(5’-胞嘧啶核苷酸、5’-尿嘧啶核苷酸、5’-腺嘌呤核苷酸、5’-次黄嘌呤核苷酸、5’-鸟嘌呤核苷酸)的测定方法。使用二维固相萃取模式,弱阴离子交换和强阳离子交换,对样品中的核苷酸进行提取,紫外检测器采集数据;用0.001%甲酸-乙腈溶液和pH 5的10 mmol/L磷酸二氢钠溶液作为流动相,等度洗脱。5种核苷酸在其线性范围内线性关系良好,定量限在0.10~0.15 mg/100 g范围内,方法回收率均在95%以上,精密度在10%以内。该方法快速、灵敏、准确,适合各类婴幼儿配方乳粉中核苷酸的测定。

关键词：核苷酸磺酸甜菜碱型两性离子亲水相互作用色谱法二维固相萃取超高效液相色谱婴幼儿配方乳粉

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海温异常对山东夏季降水的影响分析

气象 2017年第10期43卷 1259-1266页

作者：孟祥新王娜商林山东省气候中心济南250031

讨论了前期全球海温异常对山东夏季降水不同分布型的影响,找到了对汛期降水预测有指示意义的异常信号,并将这些异常信号与2016年的降水分布特征进行了验证。前期恩索(ENSO)处于发展状态时,易造成全省夏季降水一致的分布形势;前期ENSO处... 详细信息

讨论了前期全球海温异常对山东夏季降水不同分布型的影响,找到了对汛期降水预测有指示意义的异常信号,并将这些异常信号与2016年的降水分布特征进行了验证。前期恩索(ENSO)处于发展状态时,易造成全省夏季降水一致的分布形势;前期ENSO处于衰减状态时,山东夏季降水易出现东西反向的分布形势。太平洋十年际振荡和热带印度洋全区一致海温模态位相与鲁东南和半岛的夏季降水存在高相关,而副热带南印度洋偶极子和热带印度洋偶极子位相对山东夏季降水的高影响区位于鲁西北。这些异常信号对山东夏季降水预测具有一定的指示意义。

关键词：海温异常山东夏季降水气候预测