检索结果-内蒙古大学图书馆

Bioinspired Zwitterionic Block Polymer-Armored Nitric Oxide-Generating Coating Combats Thrombosis and Biofouling

Research 2025年第1期2024卷 870-884页

作者： Qing Ma Wentai Zhang Xiaohui Mou Nan Huang Haimang Wang Hongyu Zhang Zhilu Yang School of Materials Science and Engineering Key Lab of Advanced Technology of Materials of Education MinistrySouthwest Jiaotong UniversityChengdu610031China Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine The Tenth Affiliated HospitalSouthern Medical UniversityDongguan523059China GuangZhou Nanchuang Mount Everest Company for Medical Science and Technology Guangzhou510670China State Key Laboratory of Tribology in Advanced Equipment Department of Mechanical EngineeringTsinghua UniversityBeijing100084China Wenzhou Institute University of Chinese Academy of SciencesWenzhou352001 ZhejiangChina

Thrombosis and infection are 2 major complications associated with central venous catheters(CVCs),resulting in substantial mortality and *** concurrent long-term administration of antibiotics and anticoagulants to address these complications have been demonstrated to cause severe side effects such as antibiotic resistance and *** mitigate these complications with minimal or no drug utilization,we developed a bioinspired zwitterionic block polymer-armored nitric oxide(NO)-generating functional coating for surface modification of *** armor was fabricated by precoating with a Cu-dopamine(DA)/selenocysteamine(SeCA)(Cu-DA/SeCA)network film capable of catalytically generating NO on the CVCs surface,followed by grafting of a zwitterionic p(DMA-b-MPC-b-DMA)polymer *** synergistic effects of active attack by NO and copper ions provided by Cu-DA/SeCA network and passive defense by zwitterionic polymer brush imparted the CVCs surface with durable antimicrobial properties and marked inhibition of platelets and *** in vivo studies confirmed that the surface-armored CVCs could effectively reduce inflammation and inhibit thrombosis,indicating a promising potential for clinical applications.

关键词： biofouling central venous catheters thrombosis nitric oxide zwitterionic block polymer central venous catheters cvcs resulting antibiotic resistance bioinspired coating

来源：评论

学校读者我要写书评

暂无评论

Inherent Switching Reallocated CPS-PWM with Improved Voltage Balancing for MMC

引用

IEEE Transactions on Power Electronics 2025年

作者： Peng, Li Ying, Yuxuan Wang, Zhen Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Wuhan430074 China

Modular multilevel converter is an attractive solution in medium or high voltage applications, and voltage balancing is one of the most significant technical problems especially for CPS-PWM based MMCs. To solve this problem, in this paper, an inherent switching reallocated CPS-PWM is proposed for MMC. Based on arm current directions, switching states of sub-modules (SMs), voltage sorting and carrier sorting results, proposed method divides SMs and carriers into inserting and bypassing groups for each, enabling switching reallocation within these four co-optimized groups to inherently balance capacitor voltages. This effectively prevents additional switchings. Besides, most computations of the proposed CPS-PWM are logical operations implemented in FPGA, so proposed method can achieve reallocation frequency equal to sampling frequency. Unlike other CPS-PWM based methods for voltage balancing, the inherent switching reallocated CPS-PWM not only has superior converge speed in dynamic processes which accommodate a wide power range, but also has excellent balancing accuracy especially considering capacitance differences. Owing to appropriate reallocation principles, the proposed CPS-PWM has lower switching loss compared to existing carrier reallocation methods. Finally, the feasibility and superiority of the proposed method are validated by simulation and experiment results. © 1986-2012 IEEE.

关键词： Compressed sensing

来源：评论

学校读者我要写书评

暂无评论

Efficient and Stable Photoassisted Lithium‑Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

引用

Nano-Micro Letters 2025年第3期17卷 440-454页

作者： Zelin Ma Shiyao Wang Zhuangzhuang Ma Juan Li Luomeng Zhao Zhihuan Li Shiyuan Wang Yazhou Shuang Jiulong Wang Fang Wang Weiwei Xia Jie Jian Yibo He Junjie Wang Pengfei Guo Hongqiang Wang State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing School of Materials Science and Engineering DepartmentNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063People’s Republic of China Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi’an 710119People’s Republic of China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries(PLIBs),while there is always a request on fast carrier transport in electrochemical active *** work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic *** employed in PLIBs,it was found effective for synchronously enhanced photocharge separation and transport in light charging ***,experimental photon spectroscopy,finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO_(2),as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky *** from these merits,several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set,including the capacity of 276 mAh g^(−1) at 0.2 A g^(−1) under illumination,photoconversion efficiency of 1.276%at 3 A g^(−1),less capacity and Columbic efficiency loss even through 200 *** results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals

来源：评论

学校读者我要写书评

暂无评论

MIDC system voltage support capability evaluation index with renewable energy sources

MIDC system voltage support capability evaluation index with...

引用

2024 International Conference on Energy technology and Electrical Power, ETEP 2024

作者： Huang, Qiyuan Wu, Jinbo State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan China State Grid Hunan Electric Power Co. Ltd. Power Research Institute China

ISBN: (纸本)9781510690400

Renewable energy sources (RES) connected to the receiving end of the multi-infeed HVDC (MIDC) system will affect the node voltage support capability, which in turn affects the voltage stability of the power grid. To reasonably evaluate the voltage support capability of RES integrated MIDC systems, firstly, the structural characteristics of the MIDC system and the amplitude and phase characteristics of different types of RES are analyzed. Secondly, based on the traditional short circuit ratio index combined with the RES amplitude and phase characteristics, the multi-infeed transient short circuit ratio (MITSCR) is defined, and the method of analyzing the voltage support capability of MIDC system is proposed. Finally, time-domain simulation analysis is carried out using PSACD/EMTDC, and the results show that the MITSCR can effectively characterize the node voltage support capability. © 2025 SPIE.

关键词： MIDC system renewable energy sources short circuit ratio voltage support ability

来源：评论

学校读者我要写书评

暂无评论

Enhanced room temperature CO2 photoreduction on gas-solid interfaces using nanocrystals integrated with ZIF-8 wrapping design

引用

材料科学技术（英文版） 2025年第6期209卷 55-63页

作者： Xiaoxiong Hou Zhuangzhuang Ma Zhilei Zhang Xiaotong Gao Hongqiang Wang Lichao Jia Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi'an 710119China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of the Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of GrapheneXi'an 710072China

Composites derived from metal-organic frameworks(MOFs)show promise as catalysts for the photocat-alytic reduction of ***,their potential is hindered by constraints such as limited light absorp-tion and sluggish electron transfer and separation,impacting the overall efficiency of the photocatalytic *** this study,TiO2 nanocrystals,modified with Ptx+,underwent laser etching were encapsulated within the traditional MOF-ZIF-8 *** enhanced the adsorption capabilities for CO2 reactants and solar light,while also facilitating directed electron transfer and the separation of photogenerated *** finely-tuned catalyst demonstrates impressive CH4 selectivity at 9.5％,with yields of 250.24 μmol g-1 h-1 for CO and 25.43 μmol g-1 h-1 for CH4,utilizing water as a hole trap and H+*** study demonstrates the viability of achieving characteristics related to the separation of photogen-erated charges in TiO2 nanocrystals through laser etching and MOF composite *** offers novel perspectives for designing MOF-based catalysts with enhanced performance in artificial photosynthesis.

关键词： CO2 photoreduction Nanocrystals TiO2 ZIF-8 Wrapping structure

来源：评论

学校读者我要写书评

暂无评论

Comparative Study of CCPS Based on Permanent Magnet and Electrically Excited HIA for Selecting Rational Topological Structure

CPSS Transactions on Power Electronics and Applications

引用

CPSS Transactions on Power Electronics and Applications 2025年第1期10卷 66-84页

作者： Longjian Liu Kexun Yu Xianfei Xie Zhijian Liu Faculty of Electric Power Engineering Kunming University of Science and Technology Kunming China State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan China

In order to facilitate the selection of an optimal topological structure for rational pulsed capacitor charging power supplies (CCPS), this paper presents a comparative analysis of CCPS based on permanent magnet excited (PME) and electrically excited (EE) homopolar inductor alternators (HIA). The findings indicate that the d-axis transient inductance of the PME HIA is marginally greater than that of the EE HIA, a result that contradicts initial expectations. Notably, the PME HIA does not require consideration of transient flux variations, whereas the EE HIA does. The study establishes relationships among the enhancement of charge performance, efficiency, capacitance, frequency, and field winding (FW) resistance. It is observed that as capacitance, frequency, and FW resistance increase, there is a corresponding improvement in charge performance. The equipotential line representing the enhancement of charge performance approximates an inverse proportional function, suggesting that if the product of FW resistance and capacitance, or the product of FW resistance and frequency, remains constant, the improvement in charge performance will also be constant. Furthermore, it is noted that as capacitance and frequency increase, the improvement in efficiency diminishes, which is contrary to the trend observed in charge performance. To comprehensively evaluate the enhancement of charge performance and efficiency, a weighted function is proposed. This function aids in the selection of a rational topological structure for CCPS, distinguishing between those based on PME HIA and those based on EE HIA. Based on the results derived from the weighted improvement analysis, appropriate topological structures for CCPS can be identified according to varying capacitance, frequency, and FW resistance. Specifically, when the product of capacitance and FW resistance, or the product of frequency and FW resistance, is substantial, the PME HIA is recommended; conversely, the EE HIA is preferred

关键词： Transient analysis Resistance Capacitance Inductance Capacitors Power system measurements Density measurement Magnetic fields Windings Iron

来源：评论

学校读者我要写书评

暂无评论

Fluorinated Electrolyte-Assisted Dry Nano LLZO Composite Solid-state Electrolytes for Lithium-Metal Batteries 3

Fluorinated Electrolyte-Assisted Dry Nano LLZO Composite Sol...

引用

2024 3rd International Youth Scientist Forum - Academic Symposium on New Energy and New Material, IYSF-NENM 2024

作者： Han, Qigao Wang, Fuhe Wang, Fengqian Ji, Shuaijing Zhong, Jun Du, Jinqiao Tian, Jie Zhang, Weixin Tang, Shun Cao, Yuancheng Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China Shenzhen Power Supply Co. Ltd. Shenzhen518001 China

Li7La3Zr2O12 composite solid-state electrolytes (LLZO CSSEs) face severe application challenges due to the effect of grain boundary impedance. For this reason, the ionic conduction blocking effect caused by the polymer is mitigated by a dry process while reducing the polymer content. When paired with the designed fluorinated electrolyte, the ionic conductivity of the LLZO CSSEs reach 1.52 mS cm-1, exhibiting a significant ionic conduction synergistic effect. The wide electrochemical stabilization window and better flame retardancy can guarantee the stable application of LLZO CSSEs in lithium-metal batteries, and the lithium symmetric batteries can be stably cycled more than 1000 hours under the current density of 1 mA cm-2. The Li|LiNi0.8Co0.1Mn0.1O2 solid-state batteries achieved a better rate performance with the specific capacity of 128.50 mAh g-1 under the current of 5 C. These results indicate that LLZO CCSEs have the potential for further applications and are contributed to the development of lithium-metal batteries. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Solid-state Batteries

来源：评论

学校读者我要写书评

暂无评论

Visible-light optical phased array on a thin-film lithium niobate platform for high-speed beam steering

引用

Optics Letters 2025年第9期50卷 3090-3093页

作者： Ye, Yongqi Lian, Daixin Chen, Zhansheng Dong, Yantao Bai, Gang Li, Bei Song, Yiwei Zhao, Shi Wu, Jiachen Chen, Jingye Dai, Daoxin Shi, Yaocheng State Key Laboratory for Extreme Photonics and Instrumentation Center for Optical and Electromagnetic Research International Research Center for Advanced Photonics College of Optical Science and Engineering Zhejiang University Hangzhou310058 China Shanghai Academy of Spaceflight Technology Research Shanghai201100 China Shanghai Radio Equipment Research Institute Shanghai201100 China

We demonstrate a visible-light optical phased array (OPA) realized on a thin-film lithium niobate (TFLN) platform. The OPA chip integrates 32 channels and independently modulates the phase of each channel through an electro-optic phase shifter for the first time, to our knowledge, exhibiting a rapid response speed. The electro-optic rising edge response time is 12 ns, while the falling edge response time is 14 ns. Additionally, a combination of non-periodic arrays and a slab grating is employed to suppress the grating lobes of far-field beams, thereby achieving a large field of view (FOV) and a small beam divergence. A 32-channel OPA has been demonstrated, showing a FOV of 40° and a beam divergence of 0.41° in the phase tuning direction at 633 nm. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Beam steering Free space optics Lithium niobate Phase modulation Phased arrays Scanning electron microscopy

来源：评论

学校读者我要写书评

暂无评论

Thermal Balance-Based Evaluation Method for Safe Operating Areas and Its Degradation of IGBT Power Module

引用

IEEE Journal of Emerging and Selected Topics in Power Electronics 2025年

作者： Han, Tongyao Luo, Yifei Liu, Binli Yuan, Hao Shi, Zenan Naval University of Engineering National Key Laboratory of Electromagnetic Energy China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology Wuhan430033 China State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University Xi’an710049 China

Insulated gate bipolar transistors (IGBTs) power module experience significant thermal stress during short-time overload conditions, and their electro-thermal characteristics exhibit strong nonlinearities. As a result, the two-dimensional safe operating area (SOA) provided in the datasheet is unable to meet the need of device reliability assessments. In this paper, we propose a quantitative assessment method based on the thermal balance principle to define the SOA for IGBTs and assess its degradation. A three-dimensional SOA that incorporates voltage, current, and junction temperature is established to prevent IGBT from thermal failures. The proposed SOA indicates that IGBT can operate safely at more than twice the rated current, and the junction temperature can exceed 448.15K(175° C) without thermal failures. This work provides theoretical support for IGBT application design and reliability assessment. According to the physical mechanisms associated with thermal failures of IGBT power module, a criterion to characterize the thermal instability of devices is established. Further, the net heat flux analysis model that integrates semiconductor physics with heat conduction theory is established, enabling the formulation of the three-dimensional SOA of IGBT. Moreover, the effects of the degradation of electro-thermal characteristics on the SOA throughout the long-term operation of the device is considered. In addition, an electro-thermal coupling model that simulates the electro-thermal characteristics of the device is established. The results from both simulation and experiment demonstrate that the established SOA and its degradation effectively predict the reliability of the IGBT under short-time overload conditions. © 2013 IEEE.

关键词： Insulated gate bipolar transistors (IGBT)

来源：评论

学校读者我要写书评

暂无评论

Divertor heat flux challenge and mitigation in the EHL-2 spherical torus

引用

Plasma Science and technology 2025年第2期27卷 97-109页

作者： Fuqiong WANG Xiang GU Jiankun HUA Yumin WANG Xiaokun BO Bo CHEN Yuejiang SHI Shuai XU Erhui WANG Yunfeng LIANG the EHL-2 Team College of Physics Donghua UniversityShanghai 201620People’s Republic of China Hebei Key Laboratory of Compact Fusion Langfang 065001People’s Republic of China ENN Science and Technology Development Co. Ltd.Langfang 065001People’s Republic of China International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Forschungszentrum Jülich GmbH Institute of Fusion Energy and Nuclear Waste Management-Plasma PhysicsJülich 52425Germany

The divertor design is critical to heat load handling and thus to achievements of highperformance plasma operations in the EHL-2(ENN He-Long 2)*** paper presents the design of an X-point target(XPT)divertor,featuring a conventional inner divertor and an XPT outer divertor,aimed at the effective control of heat loads,which may be extremely high during high ion temperature *** divertor target plates are made from carbon-based materials,which can handle heat loads of up to 5 MW/m².Divertor performances,including the heat load controllability,the onset of detachment and the in-out/up-down asymmetry,etc.,are evaluated using both the simple particle-tracking strategy and the complicated SOLPS-ITER *** attention is paid to the drift effects on particle/heat transport in the divertor/scrape-off layer region and on the divertor heat loads,focusing on the semi-detached/detached operation *** from SOLPS-ITER simulations demonstrated that the currently designed magnetic equilibrium and divertor configuration can effectively handle the power heat load in EHL-2.

关键词： heat flux divertor EHL-2

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：