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Chinese Chemical Letters 2022年第9期33卷 4395-4399页

作者： Yubin Ma Fan Gao wanru xiao Na Li Shujun Li Bing Yu Xuenian Chen School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced Energy MaterialsHenan Normal UniversityXinxiang 453007China College of Chemistry Zhengzhou UniversityZhengzhou 450001China

The visible-light-induced selective oxidation of ubiquitous C–H bonds into valuable C=O bonds under aerobic conditions is one of the most attractive approaches for the construction of carbonyl-containing *** this work,two transition metal-containing Nb/W mixed-addendum POMs dimers with the formula of K_(2)Na_(2)H_(5)[(Fe(H_(2)O)_(4))_(3)(P_(2)W_(15)Nb_(3)O_(62))_(2)]·24H_(2)O(POM[Fe])and K_(2)Na_(3)H_(4)[(Cr(H_(2)O)_(4))_(3)(P_(2)W_(15)Nb_(3)O_(62))_(2)]·32H_(2)O(POM[Cr])have been synthesized and characterized by various analytical and spectral ***[Fe]was proved to be an efficient photocatalyst for benzylic C–H oxidation under visible light and using oxygen as an oxidant to produce the corresponding carbonyl complex in good yields.A plausible mechanism involving superoxide radical was proposed for the catalytic ***[Fe]showed good reusability in the recycling *** spectroscopy and XRD analysis indicate that POM[Fe]can retain its integrity after catalysis.

关键词： Polyoxometalates Mixed-addendum POMs Visible-light-induced catalysis Photocatalysis C-H bonds oxidation

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《物理学》电子教案制作和使用的体会

物理通报 2005年第6期26卷 35-36页

作者：肖婉如南京工业大学理学院应用物理系，江苏南京210009

目前多媒体教学已在全国高校普遍推广,并日益发挥其作用.为此,我们配合马文蔚改编的(第四版)教材的使用,制作了配套的电子教案,在教学中边制作边使用.

关键词：《物理学》教案制作高等教育出版社电子教案多媒体教学教学实践主要特点第四版

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铁死亡在胰腺癌吉西他滨耐药中的研究进展

实用医学杂志 2023年第12期39卷 1571-1576页

作者：李响田国锋肖宛儒郝靓中国医科大学法医学院化学教研室沈阳110122 辽宁省法医学生物证据重点实验室沈阳110122 中国医科大学司法鉴定中心沈阳110122 中国医科大学第一临床学院沈阳110000

胰腺癌是生存率最低和预后最差的消化道肿瘤之一。大多数患者确诊时已失去手术根治切除的机会,并在应用一线化疗药物吉西他滨(GEM)治疗过程中出现耐药性,进一步降低治疗效果。近年来,铁死亡作为一种新型铁依赖型细胞程序性死亡形式,其... 详细信息

胰腺癌是生存率最低和预后最差的消化道肿瘤之一。大多数患者确诊时已失去手术根治切除的机会,并在应用一线化疗药物吉西他滨(GEM)治疗过程中出现耐药性,进一步降低治疗效果。近年来,铁死亡作为一种新型铁依赖型细胞程序性死亡形式,其调控机制也被广泛研究并应用于胰腺癌的治疗中。有实验研究表明诱导胰腺癌细胞铁死亡可有效降低其对化疗药物的耐药性。本文综述了铁死亡在胰腺癌吉西他滨耐药中的研究进展,旨在为研究铁死亡与胰腺癌治疗提供新的思路和方向。

关键词：铁死亡胰腺癌吉西他滨耐药

区块链技术应用对我国乡镇企业融资的影响研究

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云南农业大学学报（社会科学版） 2022年第5期16卷 90-97页

作者：黄倩肖万汝李姜潞西南财经大学金融学院四川成都611130 云南财经大学金融学院云南昆明650221

乡村振兴离不开乡镇企业的发展。当前,我国乡镇企业发展态势虽整体向好,却依然受制于融资难和融资贵等因素,与此同时,区块链技术在我国金融领域,尤其是普惠金融领域,逐步得到重视与应用。本文以区块链技术为切入点,分析其对乡镇企业融... 详细信息

乡村振兴离不开乡镇企业的发展。当前,我国乡镇企业发展态势虽整体向好,却依然受制于融资难和融资贵等因素,与此同时,区块链技术在我国金融领域,尤其是普惠金融领域,逐步得到重视与应用。本文以区块链技术为切入点,分析其对乡镇企业融资的影响。通过对区块链技术影响乡镇企业融资的耦合机理的研究发现,区块链技术可通过共享机制“校准”信息不对称,共识机制“降频”实物抵押度,合约机制“稀释”歧视性因子以及溯源机制“侦测”交易链风险有效缓解乡镇企业融资困境,提出基于区块链技术下乡镇企业融资“一主两翼”策略的应用模式,并进一步就区块链技术如何有效助推乡镇企业融资有针对性地提出了建议。

关键词：乡镇企业区块链技术供应链金融 “一主两翼”策略

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大学生使用电商直播平台影响因素研究——以淘宝直播为例

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情报探索 2021年第1期 72-78页

作者：李贞贞肖宛如赵雪芹湖北大学历史文学学院湖北武汉430062

[目的/意义]旨在为电商直播平台的运营提供参考,从而有针对性地改善服务质量。[方法/过程]以技术接受模型(TAM)为基础,以淘宝直播平台为例,构建了研究大学生使用电商直播平台使用意愿的概念模型;运用问卷调查法采集数据并利用结构方程... 详细信息

[目的/意义]旨在为电商直播平台的运营提供参考,从而有针对性地改善服务质量。[方法/过程]以技术接受模型(TAM)为基础,以淘宝直播平台为例,构建了研究大学生使用电商直播平台使用意愿的概念模型;运用问卷调查法采集数据并利用结构方程模型进行剖析。[结果/结论]用户从众心理、信任、商家信誉和交互性对电商直播平台用户的使用意愿有正向的显著影响,但是感知有用性和感知易用性对行为意愿影响不显著。

关键词：电商直播用户接受行为技术接受模型淘宝直播

Effects of Strontium,Magnesium Addition,Temperature Gradient,and Growth Velocity on Al-Si Eutectic Growth in a Unidirectionally-solidified Al-13 wt%,Si Alloy

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Journal of Materials Science & Technology 2014年第2期30卷 146-153页

作者： Hengcheng Liao wanru Huang Qigui Wang Fang Jia School of Materials Science and Engineering Southeast UniversityJiangsu Key Laboratory for Advanced Metallic Materials Materials Technology GM Global Powertrain Engineering School of Mechanical Engineering Southeast University

Al-Si eutectic growth mechanism was investigated in a directionally-solidified AI-1 3 wt% Si alloy with different strontium （Sr） and magnesium （Mg） additions, growth velocities and temperature gradients. Macro- and micro- scale metallographic analyses revealed that addition level of Sr and Mg, temperature gradient and growth velocity are important factors affecting stability of solidifying AI-Si eutectic front and the final morphology of eutectic grains in the solidified A1-13 wt% Si alloys. By varying （tailoring） these factors, a variety of eutectic grain structures and morphologies such as planar front, cellular structure, a mix of cellular and columnar, or equiaxed dendrites, can be obtained. Increasing temperature gradient, reducing growth velocity, or decreasing Sr and Mg contents is beneficial to stabilizing planar growth front of eutectic grains, which is qualitatively in accordance with constitutional supercooling criterion for binary eutectic growth. In contrast, adding more Sr and Mg, increasing growth velocity, or decreasing temperature gradient produces large constitutional supercooling, leading to columnar-equiaxed transition （CET） of eutectic structure, which can be interpreted on the basis of Hunt＇s Model. It is also found that both solute concentration and solidification variables have significant impact not only on eutectic growth, but also on gas porosity formation.

关键词： Al-Si alloy Directional solidification Eutectic growth Strontium Magnesium Temperature gradient Growth velocity

Tuning microwave absorption properties of Ti_(3)C_(2)T_(x) MXene-based materials:Component optimization and structure modulation

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Journal of Materials Science & Technology 2023年第17期148卷 150-170页

作者： Ming Chang Qingyu Li Zirui Jia wanru Zhao Guanglei Wu Institute of Materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China College of Earth Sciences Jilin UniversityChangchun 130021China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071China

The current electromagnetic environment brings a growing demand for efficient microwave absorption(MA)***_(3)C_(2)T_(x) MXene,one of the 2D transition-metal carbides,is considered to be a promising MA material owing to its superior dielectric properties and structural *** order to further improve the MA performance and environmental adaptability of Ti_(3)C_(2)T_(x) MXene,Ti_(3)C_(2)T_(x) MXene-based MA materials enhanced by composition and structure design have been extensively studied and the regu-lation ideas for its MA properties can be outlined as component optimization and structure manipulation strategies based on the microwave absorption ***,we briefly introduced the microwave absorption mechanism and focused on the design strategies of Ti_(3)C_(2)T_(x) MXene-based MA materials based on recent *** addition,the prospects of Ti_(3)C_(2)T_(x) MXene-based MA materials were also discussed.

关键词： Ti_(3)C_(2)T_(x)MXene Component optimization Structure manipulation Multifunctional materials Microwave absorption

Multicomponent Nanoparticles Synergistic One-Dimensional Nanofibers as Heterostructure Absorbers for Tunable and Efficient Microwave Absorption

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Nano-Micro Letters 2023年第1期15卷 236-251页

作者： Chenxi Wang Yue Liu Zirui Jia wanru Zhao Guanglei Wu Institute of Materials for Energy and Environment State Key Laboratory of Bio-Fibers and Eco-TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071ShandongPeople’s Republic of China Weihai Innovation Institute Qingdao UniversityQingdao 264200ShandongPeople’s Republic of China

Application of novel radio technologies and equip-ment inevitably leads to electromagnetic ***-dimensional polymer-based composite membrane structures have been shown to be an effective strategy to obtain high-performance microwave ***,we reported a one-dimensional N-doped carbon nanofibers material which encapsulated the hollow Co_(3)SnC_(0.7) nano-cubes in the fiber lumen by *** charge stacking formed between nanoparticles can be channeled by longitudinal fibrous *** dielectric constant of the fibers is highly related to the carbonization temperature,and the great impedance matching can be achieved by synergetic effect between Co_(3)SnC_(0.7) and carbon *** 800℃,the necklace-like Co_(3)SnC_(0.7)/CNF with 5%low load achieves an excellent RL value of−51.2 dB at 2.3 mm and the effective absorption bandwidth of 7.44 GHz with matching thickness of 2.5 *** multiple electromagnetic wave(EMW)reflections and interfacial polarization between the fibers and the fibers internal contribute a major effect to attenuating the *** strategies for regulating electromagnetic performance can be expanded to other electromagnetic functional materials which facilitate the development of emerging absorbers.

关键词： Electrostatic spinning Necklace-structured nanofibers Broadband response Electromagnetic wave absorption

Augmented Deep Multi-Granularity Pose-Aware Feature Fusion Network for Visible-Infrared Person Re-Identification

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Computers, Materials & Continua 2023年第12期77卷 3467-3488页

作者： Zheng Shi wanru Song Junhao Shan Feng Liu School of Educational Science and Technology Nanjing University of Posts and TelecommunicationsNanjing210013China

Visible-infrared Cross-modality Person Re-identification(VI-ReID)is a critical technology in smart public facilities such as cities,campuses and *** aims to match pedestrians in visible light and infrared images for video surveillance,which poses a challenge in exploring cross-modal shared information accurately and ***,multi-granularity feature learning methods have been applied in VI-ReID to extract potential multi-granularity semantic information related to pedestrian body structure ***,existing research mainly uses traditional dual-stream fusion networks and overlooks the core of cross-modal learning networks,the fusion *** paper introduces a novel network called the Augmented Deep Multi-Granularity Pose-Aware Feature Fusion Network(ADMPFF-Net),incorporating the Multi-Granularity Pose-Aware Feature Fusion(MPFF)module to generate discriminative *** efficiently explores and learns global and local features with multi-level semantic information by inserting disentangling and duplicating blocks into the fusion module of the backbone ***-Net also provides a new perspective for designing multi-granularity learning *** incorporating the multi-granularity feature disentanglement(mGFD)and posture information segmentation(pIS)strategies,it extracts more representative features concerning body structure *** Local Information Enhancement(LIE)module augments high-performance features in VI-ReID,and the multi-granularity joint loss supervises model training for objective feature *** results on two public datasets show that ADMPFF-Net efficiently constructs pedestrian feature representations and enhances the accuracy of VI-ReID.

关键词： Visible-infrared person re-identification multi-granularity feature learning modality

Nitrogen-Doped Hierarchical Heterostructured Aerophobic MoS_(x)/Ni_(3)S_(2)Nanowires by One-pot Synthesis:System Engineering and Synergistic Effect in Electrocatalysis of Hydrogen Evolution Reaction

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Energy & Environmental Materials 2021年第4期4卷 658-663页

作者： Xin Ma wanru Chen Qian Li Longjian Xue Chuang Peng School of Resource and Environmental Sciences Wuhan UniversityWuhan 430072China The Institute of Technological Sciences Wuhan UniversityWuhan 430072China

Non-noble metal electrocatalysis has witnessed rapid and profound performance improvements owing to the emergence of advanced nanosynthetic *** of these nanotechniques can lead to synergistic performance enhancement,but such system-engineering strategies are difficult to achieve because of the lack of effective synthesis *** hereby demonstrate an integrated approach that combines most of the existing nanotechniques in a facile one-pot *** characterization reveals that the product shows key features intended by techniques including morphological,structural,doping,heterointerface,and surface wetting *** as-obtained nitrogen-doped hierarchical heterostructured MoS_(x)/Ni_(3)S_(2)nanowires show an overpotential that is only50 mV higher than commercial Pt/C for hydrogen evolution reaction over current densities from 10 to 150 mA cm^(-2).Correlations between the adopted nanotechniques and the electrochemical reaction rates are established by evaluating the impacts of individual techniques on the activation energy,pre-exponential factor,and transfer *** indepth analysis provides a full account of the synergistic effects and the overall improvement in electrocatalytic performance of hydrogen evolution *** work manifests a generic strategy for multipurpose material design in non-noble metal electrocatalysis.

关键词： electrochemical reaction rate nanotechnology non-noble metal catalysis synergistic effect system engineering