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三种饮用水对NIH小鼠血液指标的影响

实验动物科学 2024年第3期41卷 46-50页

作者：王学文吴征宏彭卫娟邱丽媛董浩左琴刘佐民中国食品药品检定研究院实验动物资源研究所北京102629 安维迪生命科学(浙江)有限公司嘉兴314001

目的探讨三种饮用水对NIH小鼠血液指标的影响。方法将54只NIH小鼠随机分为3组,分别饮用高压灭菌水、高压酸化水和无菌水袋水(膜过滤水),在实验30、60和90 d分别取血进行血常规和血生化检测,并取肝组织进行组织病理学检查,探讨三种饮... 详细信息

目的探讨三种饮用水对NIH小鼠血液指标的影响。方法将54只NIH小鼠随机分为3组,分别饮用高压灭菌水、高压酸化水和无菌水袋水(膜过滤水),在实验30、60和90 d分别取血进行血常规和血生化检测,并取肝组织进行组织病理学检查,探讨三种饮用水对小鼠健康状态的影响。结果 60 d水袋水组白蛋白(ALB)显著高于高压灭菌水组(P0.05),肝组织病理学结果显示各组小鼠肝组织未发现病变,为正常肝组织。结论三种饮用水对NIH小鼠健康状态无明显影响。

关键词：三种饮用水 NIH小鼠血液指标

Quasi-One-Dimensional van der Waals Transition Metal Trichalcogenides

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Research 2023年第4期2023卷 219-243页

作者： Mengdi Chen Lei Li Manzhang Xu Weiwei Li Lu Zheng xuewen wang Frontiers Science Center for Flexible Electronics(FSCFE)&Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China Shaanxi Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China MIIT Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi’an710072China Key Laboratory of Flexible Electronics of Zhejiang Provience Ningbo Institute of Northwestern Polytechnical University218 Qingyi RoadNingbo 315103China.

The transition metal trichalcogenides(TMTCs)are quasi-one-dimensional(1D)MX_(3)-type van der Waals layered semiconductors,where M is a transition metal element of groups IV and V,and X indicates chalcogen *** to the unique quasi-1D crystalline structures,they possess several novel electrical properties such as variable bandgaps,charge density waves,and superconductivity,and highly anisotropic optical,thermoelectric,and magnetic *** study of TMTCs plays an essential role in the 1D quantum materials field,enabling new opportunities in the material research ***,tremendous progress in both materials and solid-state devices has been made,demonstrating promising applications in the realization of nanoelectronic *** review provides a comprehensive overview to survey the state of the art in materials,devices,and applications based on ***,the symbolic structure,current primary synthesis methods,and physical properties of TMTCs have been ***,examples of TMTC applications in various fields are presented,such as photodetectors,energy storage devices,catalysts,and ***,we give an overview of the opportunities and future perspectives for the research of TMTCs,as well as the challenges in both basic research and practical applications.

关键词： Transition realization crystalline

Virtual straightening of scraper conveyor based on the position and attitude solution of industrial robot model

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International Journal of Coal Science & Technology 2021年第5期8卷 1149-1170页

作者： Suhua Li Jiacheng Xie Fang Ren Xin Zhang xuewen wang Binbin wang Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment College of Mechanical and Vehicle EngineeringTaiyuan University of TechnologyTaiyuan 030024China

The movement of the floating connecting mechanism between a hydraulic support and scraper conveyor is space movement;thus,when the hydraulic support pushes the scraper conveyor,there is an error between the actual distance of the scraper conveyor and the theoretical moving *** a result,the scraper conveyor cannot obtain the straightness ***,the movement law of the floating connecting mechanism between the hydraulic support and scraper conveyor is analyzed and programmed into the Unity3D to realize accurate pushing of the scraper conveyor via hydraulic *** Coal Seam?Equipment Joint Virtual Straightening System is established,and a straightening method based on the motion law of a floating connection is proposed as the default method of the *** addition,a straightening simulation of the scraper conveyor was performed on a complex coal seam floor,the results demonstrate that the average straightening error of the scraper conveyor is within 2-8 mm,and is in direct proportion to the fluctuation of the coal seam floor in the strike of the seam with high accuracy,the straightness of scraper conveyor is more affected by the subsidence terrain during straightening than by the bulge *** some conclusions are verified by *** on the verification of the relevant conclusions,a comparison and analysis of Longwall Automation Steering Committee(LASC)straightening technology and default straightening method in the simulation system shows that the straightness accuracy of LASC straightening technology under complex floor conditions is slightly less than that of the default straightening method in the proposed system.

关键词： Virtual reality Scraper conveyor Hydraulic support Posture solution Straightness control

Synthesis of cobalt-doped ZnO/rGO nanoparticles with visible-light photocatalytic activity through a cobalt-induced electrochemical method

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Journal of Energy Chemistry 2017年第3期26卷 549-555页

作者： Yuanquan Miao xuewen wang Wuyou wang Chengxi Zhou Gang Feng Jianxin Cai Rongbin Zhang The Institute of Applied Chemistry The College of ChemistryNanchang UniversityNanchang 330031JiangxiChina School of Resources Environmental&Chemical Engineering Nanchang UniversityNanchang 330031JiangxiChina

ZnO is a semiconductor photocatalyst widely applied in photodegradation of organic pollutants and in photoelectric conversion. ZnO exhibits low photocatalytic activity due to poor absorption in the visible region. In this work, a novel cobalt-induced electrochemical growth method was developed to synthesize cobalt-doped ZnO/rGO nanoparticles in an aqueous solution at room temperature. Cobalt-doped ZnO/rGO nanoparticles exhibited wider visible-light absorption band ranging from 400 nm to 700 nm due to cobalt doping. The surface structure of ZnO formed by the cobalt-induced electrochemical method without other ions is suitable for photocatalytic reactions. The cobalt-doped ZnO/rGO nanoparticles were found to exhibit in photodegradation and photo-electrochemical measurements and exhibited enhanced photocatalytic activity under visible-light irradiation.

关键词： Co-doped ZnO Electrochemical Photodegradation Photocatalysis

Enhanced electromagnetic wave absorption via optical fiber-like PMMA@Ti_(3)C_(2)T_(x)@SiO_(2) composites with improved impedance matching

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Nano Research 2024年第3期17卷 1676-1686页

作者： Huanhuan Niu xuewen Jiang Wei Li Zhiyu Min Budi Riza Putra Wulan Tri Wahyuni Hailong wang Rui Zhang Bingbing Fan School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Department of Materials and Earth Sciences Technical University of DarmstadtDarmstadt 64287Germany School of Material Science and Engineering Luoyang Institute of Science and TechnologyLuoyang 471023China Research Center for Metallurgy National Research and Innovation Agency(BRIN)PUSPIPTEK Gd.470South TangerangBanten 15315Indonesia Analytical Chemistry Division Department of ChemistryFaculty of Mathematics and Natural SciencesIPB UniversityWest Java 16680Indonesia

Ti_(3)C_(2)T_(x) nanosheets have attracted significant attention for their potential in electromagnetic wave absorption(EWA).However,their inherent self-stacking and exorbitant electrical conductivity inevitably lead to serious impedance mismatch,restricting their EWA ***,the optimization of impedance matching becomes *** this work,we developed polymethyl methacrylate(PMMA)@Ti_(3)C_(2)T_(x)@SiO_(2) composites with a sandwich-like core–shell structure by coating SiO_(2) on PMMA@Ti_(3)C_(2)T_(x).The results demonstrate that the superiority of the SiO_(2) layer in combination with PMMA@Ti_(3)C_(2)T_(x),outperforming other relative graded distribution structures and meeting the requirements of EWA *** resulting PMMA@Ti_(3)C_(2)T_(x)@SiO_(2) composites achieved a minimum reflection loss of-58.08 dB with a thickness of 1.9 mm,and an effective absorption bandwidth of 2.88 *** analysis revealed that the structural design of SiO_(2) layer not only optimized impedance matching,but also synergistically enhanced multiple loss mechanisms such as interfacial polarization and dipolar ***,this work provides valuable insights for the future preparation of high-performance electromagnetic wave absorbing Ti_(3)C_(2)T_(x)-based composites.

关键词： polymethyl methacrylate(PMMA)@Ti_(3)C_(2)T_(x)@SiO_(2)composites impedance match SiO_(2)layer optical fiber-like structure interfacial polarization and dipolar polarization

Flexible electronic eardrum

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Nano Research 2017年第8期10卷 2683-2691页

作者： Yang Gu xuewen wang Wen Gu Yongjin Wu Tie Li Ting Zhang Suzhou Institute of Nano-Tech and Nano-Bionics 398 Ruoshui Road i-Lab Suzhou 125123 China

Flexible mechanosensors with a high sensitivity and fast response speed may advance the wearable and implantable applications of healthcare devices, such as real-time heart rate, pulse, and respiration monitoring. In this paper, we introduce a novel flexible electronic eardrum （EE） based on single-walled carbon nanotubes, polyethylene, and polydimethylsiloxane with micro-structured pyramid arrays. The EE device shows a high sensitivity, high signal-to-noise ratio （approximately 55 dB）, and fast response time （76.9 μs） in detecting and recording sound within a frequency domain of 20-13,000 Hz. The mechanism for sound detection is investigated and the sensitivity is determined using the micro-structure, thickness, and strain state. We also demonstrated that the device is able to distinguish human voices. This unprecedented performance of the flexible electronic eardrum has implications for many applications such as implantable acoustical bioelectronics and personal voice recognition.

关键词： electronic eardrum (EE) pressure sensor carbon nanotube voice recognition

Two-dimensional materials:From mechanical properties to flexible mechanical sensors

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InfoMat 2020年第6期2卷 1077-1094页

作者： Hanjun Jiang Lu Zheng Zheng Liu xuewen wang Institute of Flexible Electronics Northwestern Polytechnical UniversityXi'anChina MIIT Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical UniversityXi'anChina Shaanxi Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical UniversityXi'anChina School of Materials Science and Engineering Nanyang Technological UniversitySingapore Centre for Micro-/Nano-electronics(NOVITAS) School of Electrical&Electronic EngineeringNanyang Technological UniversitySingapore CINTRACNRS/NTU/THALES Research Techno PlazaSingapore

Two-dimensional(2D)materials have great potential in the fields of flexible electronics and photoelectronic devices due to their unique properties derived by special *** study of the mechanical properties of 2D materials plays an important role in next-generation flexible mechanical electronic device ***,traditional experiment models and measurement methods are not suitable for 2D materials due to their atomically ultrathin thickness,which limits both the theoretical research and practical value of the 2D *** this review,we briefly summarize the characterization of mechanical properties of 2D materials by in situ probe nanoindentation experiments,and discuss the effect of thickness,grain boundary,and interlayer *** introduce the strain-induced effect on electrical properties and optical properties of 2D ***,we generalize the mechanical sensors based on various 2D materials and their future potential applications in flexible and wearable electronic ***,we discuss the state of the art for the mechanical properties of 2D materials and their opportunities and challenges in both basic research and practical applications.

关键词： 2D materials flexible mechanical sensor mechanical property strain effect

An operation optimization method of a fully mechanized coal mining face based on semi-physical virtual simulation

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International Journal of Coal Science & Technology 2020年第1期7卷 147-163页

作者： Hengbo Shi Jiacheng Xie xuewen wang Juanli Li Xing Ge College of Mechanical and Vehicle Engineering Key Laboratory of Fully Mechanized Coal Mining EquipmentTaiyuan University of TechnologyTaiyuan 030024ShanxiChina Taiyuan Mining Machinery Group Co. Ltd.Postdoctoral Science Research WorkstationTaiyuan 030032ShanxiChina

A mathematical hydraulic support self-tracking model for three-machine cooperative mining is proposed to address low efficiency and difficulties in strategy evaluation of a fully mechanized coal *** proposed model uses the coordinates and traction speed of the shearer to calculate the frequency of the circular hydraulic support and realize the coordinated operation of the three-machine mining technology.A unity3d hardware-in-the-loop simulation experimental hearer and hydraulic support platform was used to validate the model of autonomous *** results indicate that collaborative control of coal mining allowed for an efficiency 3.76%higher than under automatic operation mode and 46.03%higher than under manual control;thus,The mathematical model provided an improved production efficiency of the fully mechanized mining *** mathematical model also provides a more intelligent and reliable security support,and improves the intelligent level of hydraulic support follow-up control.

关键词： Semi-physical simulation Virtual reality Unity3d Human-computer interaction Shearer traction speed

3D macropore carbon-vacancy g-C_(3)N_(4) constructed using polymethylmethacrylate spheres for enhanced photocatalytic H_(2) evolution and CO_(2) reduction

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Journal of Energy Chemistry 2021年第2期30卷 139-146,I0006页

作者： xuewen wang Qjuchan Li Lei Gan Xinfei Ji Fayun Chen Xinke Peng Rongbin Zhang Key Laboratory of Jiangxi Province for Environment and Energy Catalysis The College of ChemistryNanchang UniversityNanchang 330031JiangxiChina College of Chemistry and Environmental Science Shangrao Normal UniversityShangrao 334001JiangxiChina Jiangxi Energy Sales Co. LtdNanchang 330031Jiangxi.China

Metal-free g-C_3N_4 is widely used in photocatalytic reactions owing to its suitable band ***, it has low specific surface area and insufficient absorbance for visible light, and its photoexcited carriers have high recombination rates. In this study, the 3 D macropore C-vacancy g-C_3N_4 was prepared through a facile one-step route. Polymethylmethacrylate is used as a template to increase the surface reaction sites of g-C_3N_4 and extend its visible-light range. Compared to unmodified g-C_3N_4, the H2 production and CO_2 reduction rates of the fabricated g-C_3N_4 significantly improved. The special pore structure significantly improved the light utilization efficiency of g-C_3N_4 and increased the number of surface-active sites. The introduction of C-vacancy extended the absorption band of visible-light and suppressed the carrier recombination. The newly developed synthesis strategy can improve solar energy conversion efficiency and potentially modifies g-C_3N_4.

关键词： Carbon nitride Macropore Photocatalytic H_(2)evolution CO_(2)reduction