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Te-doped Fe3O4 flower enabling low overpotential cycling of Li-CO2 batteries at high current density

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In situ photoelectric biosensing based on ultranarrowband near-infrared plasmonic hot electron photodetection

结构化学 2024年第3期43卷 25-32页

作者： Huyi Yu Renshu Huang Qian Liu Xingfa Chen Tianqi Yu haiquan wang Xincheng Liang Shibin Yin Guangxi Key Laboratory of Electrochemical Energy Materials School of Chemistry and Chemical EngineeringGuangxi University100 Daxue RoadNanning530004China

Li-CO2 batteries(LCBs)suffer from high overpotentials caused by sluggish CO2 reaction *** work designs a Te-doped Fe3O4(Te-Fe3O4)flower-like microsphere catalyst to lower the overpotential and improve the reversibility of *** results reveal that Te doping modifies the electronic structure of Fe3O4 and reduces the *** stable Te-O bond between Te and C2O4-could effectively inhibit the dispro-portionation reaction of the latter,enabling the Te-Fe3O4 cathodes to exhibit a remarkable capacity(9485 mAh g-1)and a long cycling life(155 cycles)with an overpotential of 1.21 V and an energy efficiency of about 80％at a high current density(2000 mA g-1).Through the interaction between Te and Li2C2O4 to inhibit the dispro-portionation reaction,this work successfully achieves long-term cycling of LCBs with low overpotential at high current density.

关键词： Li-CO_2 batteries Catalyst Tellurium Li_2C_2O_4 Large current density

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Advanced Photonics 2024年第2期6卷 81-89页

作者： Xianghong Nan Wenduo Lai Jie Peng haiquan wang Bojun Chen Huifan He Zekang Mo Zikun Xia Ning Tan Zhong Liu Long Wen Dan Gao Qin Chen Jinan University College of Physics & Optoelectronic Engineering Institute of Nanophotonics Guangdong Provincial Key Laboratory of Nanophotonic Manipulation Tsinghua University Shenzhen International Graduate School State Key Laboratory of Chemical Oncogenomics Jinan University College of Life Science and Technology

Narrowband photodetection is an important measurement technique for material analysis and sensing, for example, nondispersive infrared sensing technique. Both photoactive material engineering and nanophotonic filtering schemes have been explored to realize wavelength-selective photodetection,while most devices have a responsive bandwidth larger than 2% of the operating wavelength, limiting sensing performance. Near-infrared photodetection with a bandwidth of less than 0.2% of the operating wavelength was demonstrated experimentally in Au/Si Schottky nanojunctions. A minimum linewidth of photoelectric response down to 2.6 nm was obtained at a wavelength of 1550 nm by carefully tailing the absorptive and radiative loss in the nanostructures. Multiple functions were achieved on chip with the corrugated Au film, including narrowband resonance, light harvesting for sensing and photodetection, and electrodes for hot electron emission. Benefiting from such a unity integration with in situ photoelectric conversion of the optical sensing signal and the ultranarrowband resonance, self-contained on-chip biosensing via simple intensity interrogation was demonstrated with a limit of detection down to 0.0047%in concentration for glucose solution and 150 ng∕m L for rabbit IgG. Promising potential of this technique is expected for the applications in on-site sensing, spectroscopy, spectral imaging, etc.

关键词： Photodetectors Plasmonics Biosensing Optical gratings Gold Absorption spectrum Acoustooptic tunable filters Absorption Sensors In situ remote sensing

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矿震与冲击地压防治研究进展

中国安全科学学报 2024年第1期34卷 85-93页

作者：李俊平管婷婷冯嘉禹王海泉西安建筑科技大学资源工程学院陕西西安710055 陕西有色金属集团有限责任公司陕西西安710075

矿震与冲击地压是采矿领域亟待解决的热点、难点和瓶颈问题,为了有效控制矿震与冲击地压,综述矿震定义与分类、矿压假说及矿震与冲击地压防治技术,回顾切顶卸压理论及其在中厚金矿采空区处理与卸压开采、中厚及以下煤矿沿空留巷中的应用... 详细信息

矿震与冲击地压是采矿领域亟待解决的热点、难点和瓶颈问题,为了有效控制矿震与冲击地压,综述矿震定义与分类、矿压假说及矿震与冲击地压防治技术,回顾切顶卸压理论及其在中厚金矿采空区处理与卸压开采、中厚及以下煤矿沿空留巷中的应用,并比较其与110工法的差异。据此,给出矿震定义,指出矿震与冲击地压发生的条件类似,针对厚矿体开采提出深埋坚硬顶板控制爆破切槽放顶技术。研究表明:控制爆破切槽放顶技术仍然是未来矿震与冲击地压防治中释放并转移高地压的主要方法,它还可将深埋厚矿体的“砌体梁”简化成弹簧岩梁承载体系。

关键词：矿震冲击地压切顶卸压理论弹簧岩梁承载地表沉陷

藤菔降压片联合缬沙坦/氨氯地平治疗2级高血压病肝阳上亢证的随机、双盲、多中心临床试验

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中国实验方剂学杂志 2024年第9期30卷 83-92页

作者：齐于辰李运伦武玉洁王海权王宇山东中医药大学济南250355 山东中医药大学附属医院济南250014 山东省心血管病中医精准治疗工程实验室济南250355

目的:观察藤菔降压片联合缬沙坦/氨氯地平对2级高血压病肝阳上亢证的临床有效性及安全性。方法:按照随机、双盲、安慰剂平行对照方法,纳入7个分中心288例2级高血压肝阳上亢证的患者,随机分为观察组和对照组(各144例),分别给予藤菔降压... 详细信息

目的:观察藤菔降压片联合缬沙坦/氨氯地平对2级高血压病肝阳上亢证的临床有效性及安全性。方法:按照随机、双盲、安慰剂平行对照方法,纳入7个分中心288例2级高血压肝阳上亢证的患者,随机分为观察组和对照组(各144例),分别给予藤菔降压片联合缬沙坦/氨氯地平和藤菔降压片安慰剂联合缬沙坦/氨氯地平治疗,干预4周后评估疗效。试验过程中记录受试者的安全性指标及不良反应事件等进行安全性评价,记录疗效性指标、中医证候积分等进行有效性评价,同时对血压达标率等主要疗效指标的统计结果进行敏感性分析,保证分析结果的准确性。纳入观察组和对照组血样各88组作为检测对象,在临床试验受试患者服药前1 d和服药结束后第1天分别采集患者空腹血样,对处理后血清使用酶联免疫吸附测定法(ELISA)进行检测,检测患者治疗前后血清中花生四烯酸(AA)、血栓素B2(TXB2)、前列腺素E2(PGE2)的含量,初步探讨藤菔降压片对机体炎症因子的调控。结果:最终共271例患者完成试验(观察组133例,对照组138例),两组患者安全性指标中血常规(白细胞、血红细胞、血小板)、尿常规(尿蛋白、尿血红细胞)、丙氨酸氨基转移酶、天冬氨酸氨基转移酶、肌酐、尿素、心电图异常情况在治疗前后差异均无统计学意义,未见严重不良反应;观察组患者治疗4周后收缩压差值、舒张压差值均大于对照组(P<0.01),根据降压疗效判定标准,观察组总有效率为89.47%(119/133),对照组患者总有效率为57.97%(80/138),观察组患者总有效率显著高于对照组(Z=2.593,P<0.01)。在血压达标率方面,收缩压达标率观察组为61.65%(82/133),对照组为37.68%(52/138);舒张压达标率观察组为78.20%(104/133),对照组为55.07%(76/138);血压整体达标率观察组为48.12%(64/133),对照组23.19%(32/138),观察组均高于对照组(χ^(2)=15.571、16.236、18.404,P<0.01)。根据中医证候积分疗效判定标准,观察组总有效率为57.89%(77/133),对照组患者中医证候总有效率为38.41%(53/133),观察组显著高于对照组(Z=-3.172,P<0.01)。与本组治疗前比较,治疗后两组患者血清AA和TXB2均显著降低(P<0.01),观察组患者PGE2水平显著升高(P<0.01);与对照组治疗后比较,观察组患者AA和TXB2均显著降低,PGE2水平显著升高(P<0.01)。提示藤菔降压片在治疗2级高血压患者过程中可有效降低炎症因子,减少炎症介质产生,从而阻止炎症反应发生。结论:发现藤菔降压片治疗2级高血压病肝阳上亢证可更加有效降低患者收缩压及舒张压,提高患者血压达标率,改善患者中医证候,临床应用较安全。藤菔降压片临床疗效突出,可作为临床治疗2级高血压病肝阳上亢证的有效干预方式。

关键词：藤菔降压片 2级高血压肝阳上亢证随机、双盲、多中心试验

A MIMO system with finite-bit feedback based on fixed constellations

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Science China(Information Sciences) 2013年第6期56卷 25-38页

作者： wang haiquan ZHAO ZhiJin School of Communications Engineering Hangzhou Dianzi University

In this paper,a MIMO system with finite-bit feedback based on fixed constellations is *** on performance analysis of the system,an optimal operating system with maximum-likelihood decoding is ***,this operation reveals that the optimal way for the system to transmit signals needs to invoke the multimode *** propose designing criteria for this scheme and methods for pre-codebooks,and a method to determine the number of modes for any specific ***,to reduce encoding complexity at the receiver side,we also develop a fast encoding *** analysis and simulations show that the proposed systems offer considerable gain over existing ***,these systems also have much lower encoding ***,for the case of a MIMO system with two pairs of transmitting and receiving antennas,a properly designed system with a transmission rate of 8 bits per channel use and with 6-bit feedback can provide about a 1.5 dB performance gain over a beamforming system.

关键词： beamforming fixed constellations finite-bit feedback multiple-input multiple-output systems space-time coding union bound

Dynamics and control of variable geometry truss manipulator

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Applied Mathematics and Mechanics(English Edition) 2017年第2期38卷 243-262页

作者： Xiaofeng LIU Qishuai wang haiquan LI Guoping CAI Department of Engineering Mechanics State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200240 China

Variable geometry truss manipulator （VGTM） has potential to work in the future space applications, of which a dynamic model is important to dynamic analysis and control of the system. In this paper, an approach is presented to model the dynamic equations of a VGTM by independent variables, which consists of two double-octahedral truss units and a 3-revolute-prismatic-spherical （3-RPS） parallel manipulator. In this ap- proach, the kinematic recursive relations of two adjacent bodies and geometric constrains are used to deduce the kinematic equations of the VGTM, and Jourdain＇s velocity varia- tion principle is adopted to establish the dynamic equations of the system. The validity of the proposed dynamic model is verified by comparison of numerical simulations with the software ADAMS. Besides, an active controller for trajectory tracking of the system is designed by the computed torque method. The effectiveness of the controller is numer- ically proved.

关键词： variable geometry truss manipulator (VGTM) double-octahedral truss unit,3-revolute-prismatic-spherical (3-RPS) parallel manipulator dynamic modeling activecontrol

Sintering behaviour and microwave dielectric properties of MgO-2B_(2)O_(3)--xwt%BaCu(B_(2)O_(5))-ywt%H_(3)BO_(3) ceramics

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Journal of Advanced Ceramics 2021年第6期10卷 1282-1290页

作者： haiquan wang Shixuan LI Kangguo wang Xiuli CHEN Huanfu ZHOU Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi Key Laboratory of Nonferrous Materials and New Processing TechnologyMinistry of EducationSchool of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004China

This study investigates the bulk density,sintering behaviour,and microwave dielectric properties of the MgO-2B_(2)O_(3) series ceramics synthesised by solid-state *** to the X-ray diffraction and microstructural analyses,the as-prepared MgO-2B_(2)O_(3) ceramics possess a single-phase structure with a rod-like *** effects of different quantities of H_(3)BO_(3) and BaCu(B_(2)O5)(BCB)on the bulk density,sintering behaviour,and microwave dielectric properties of the MgO-2B_(2)O_(3) ceramics were ***,the optimal sintering temperature was obtained by adding 30 wt%H_(3)BO_(3) and 8 wt%*** also reduced the sintering temperature to 825°***,the addition of 40 wt%H_(3)BO_(3) and 4 wt%BCB increased the quality factor,permittivity,and temperature coefficient of resonance frequency of MgO-2B_(2)O_(3) to 44,306 GHz(at 15 GHz),5.1,and-32 ppm/℃,*** properties make MgO-2B_(2)O_(3) a viable low-temperature co-fired ceramic with broad applications in microwave dielectrics.

关键词： low-temperature co-fired ceramics(LTCC) sintering temperature MgO-2B_(2)O_(3) H_(3)BO_(3) microwave dielectrics temperature coefficient of resonance frequency

总体国家安全观融入高校课程思政的基本问题论析

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郑州轻工业大学学报（社会科学版） 2024年第5期25卷 93-99页

作者：周广亮王海全郑州轻工业大学经济与管理学院河南郑州450001

将总体国家安全观融入高校课程思政建设和教学活动,既有助于发挥高校维护国家安全的重要作用,也有助于筑牢青年学生抵御各种有害思潮侵袭的思想防线。课程思政同总体国家安全观之间存在着内在的契合性,但高校存在着对于总体国家安全观... 详细信息

将总体国家安全观融入高校课程思政建设和教学活动,既有助于发挥高校维护国家安全的重要作用,也有助于筑牢青年学生抵御各种有害思潮侵袭的思想防线。课程思政同总体国家安全观之间存在着内在的契合性,但高校存在着对于总体国家安全观核心要义与丰富内涵体悟不深、对于课程思政的本质属性及其重要功能的理解存在着认识误区,以及对于二者之间的内在联系把握不够深入的问题。为此,需秉持系统思维,高校党委应明确目标、统筹谋划、系统设计;职能部门和教学单位应把握规律、同步联动、协同推进;教育者和教育对象应艺术性设计教学方案,推动师生双向奔赴;教育教学辅助者应开展丰富多彩的第二课堂与社会教育活动。同时,应创造性采取多种教学方式,整合利用多种教学资源,全过程统筹教学环节。

关键词：总体国家安全观课程思政系统协同教学活动

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The gate to metabolic crossroads

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Science Bulletin 2021年第15期66卷 1488-1490,M0003页

作者： haiquan wang Chaojun Li Ministry of Education Key Laboratory of Model Animal for Disease Study Model Animal Research Center of the Medical SchoolNanjing UniversityNanjing 210093China

Glycerol is a simple polyhydroxy-three-carbon compound that is highly hydrophilic and is considered a central intermediate metabolite for cellular *** is found at the crossroads among several metabolic pathways,such as glycolysis and gluconeogenesis(for carbohydrates),lipogenesis,lipolysis,and glyceroneogenesis(for lipids),pentose-phosphate pathway(for nucleic acids),amino acid synthesis,and even energy generation by oxidative phosphorylation[1](Fig.1).

关键词： acids) oxidative synthesis