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Regulating^(*)COOH intermediate via amino alkylation engineering for exceptionally effective photocatalytic CO_(2) reduction

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Journal of Energy Chemistry 2024年第5期92卷 282-291页

作者： Chengcheng Chen Qiaoyu Zhang Fangting liu Zhengguo Zhang qiong liu Xiaoming Fang Key Laboratory of Enhanced Heat Transfer and Energy Conservation The Ministry of EducationSchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640GuangdongChina Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology(China) Institute of AnalysisGuangdong Academy of Sciences(China National Analytical CenterGuangzhou)Guangzhou 510070GuangdongChina Guangdong Engineering Technology Research Center of Efficient Heat Storage and Application South China University of TechnologyGuangzhou 510640GuangdongChina Guangdong Provincial Key Laboratory of Fuel Cell Technology South China University of TechnologyGuangzhou 510640GuangdongChina

Photocatalytic reduction of CO_(2) into fuel represents a promising approach for achieving carbon neutrality,while realizing high selectivity in this process is challenging due to uncontrollable reaction intermediate and retarded desorption of target *** the interface microenvironment of catalysts has been proposed as a strategy to exert a significant influence on reaction outcomes,yet it remains a significant *** this study,amino alkylation was successfully integrated into the melem unit of polymeric carbon nitrides(PCN),which could efficiently drive the photocatalytic CO_(2) *** characterization and theoretical calculations revealed that the introduction of amino alkylation lowers the energy barrier for CO_(2) reduction into^(*)COOH intermediate,transforming the adsorption of^(*)COOH intermediate from the endothermic to an exothermic ***,the as-prepared materials demonstrated outstanding performance in photocatalytic CO_(2) reduction,yielding CO_(2)at a rate of 152.8μmol h^(-1) with a high selectivity of 95.4%and a quantum efficiency of 6.6%.

关键词： Polymeric carbonnitride Regulate intermediate Photocatalytic CO_(2)reduction Amino alkylation ^(*)COOH adsorption

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Current optimization-based control of dual three-phase PMSM for low-frequency temperature swing reduction

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Defence Technology（防务技术） 2024年第4期34卷 238-246页

作者： Linlin Lu Xueqing Wang Luhan Jin qiong liu Yun Zhang Yao Mao Key Laboratory of Optical Engineering Chinese Academy of SciencesChengdu 610209China Institute of Optics and Electronics Chinese Academy of SciencesChengdu 610209China University of Chinese Academy of Sciences Beijing 100049China College of Electrical Engineering Sichuan UniversityChengdu 610065China

In this paper,a control scheme based on current optimization is proposed for dual three-phase permanent-magnet synchronous motor(DTP-PMSM)drive to reduce the low-frequency temperature *** reduction of temperature swing can be equivalent to reducing maximum instantaneous phase copper loss in this ***,a two-level optimization aiming at minimizing maximum instantaneous phase copper loss at each electrical angle is ***,the optimization is transformed to a singlelevel optimization by introducing the auxiliary variable for easy *** that singleobjective optimization trades a great total copper loss for a small reduction of maximum phase copper loss,the optimization considering both instantaneous total copper loss and maximum phase copper loss is proposed,which has the same performance of temperature swing reduction but with lower total *** this way,the proposed control scheme can reduce maximum junction temperature by 11%.Both simulation and experimental results are presented to prove the effectiveness and superiority of the proposed control scheme for low-frequency temperature swing reduction.

关键词： Dual three-phase PMSM Low-frequency temperature swing Copper loss Current optimization Connected neutral points

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Accurate Shortwave Radiation Simulation with a Two-Layer Aerosol Model in Xinjiang Region

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Journal of Meteorological Research 2024年第1期38卷 69-87页

作者： Guan HUANG Yonghang CHEN qiong liu Pengtao WANG Qianshan HE Qing HE Shuai LI Weiling SHAO Ting FAN School of Tourism&Research Institute of Human Geography Xi’an International Studies UniversityXi’an 710128 Center for Silk Road and Eurasian Civilization Studies Xi’an International Studies UniversityXi’an 710128 College of Environmental Science and Engineering Donghua UniversityShanghai 201620 Shanghai Meteorological Service Shanghai 200030 Shanghai Key Laboratory of Meteorology and Health Shanghai 200030 Taklimakan Desert Meteorology Field Experiment Station of China Meteorological Administration Institute of Desert MeteorologyUrumqi 830002 Xinjiang Climate Centre Xinjiang Meteorological ServiceUrumqi 830002

To harness the rich solar energy resources in Xinjiang Region of Northwest China,this study tries to address the issue of lack of downward surface shortwave radiation(DSSR)observations and the need to improve the accuracy of satellite retrieval and numerical simulation of DSSR under varied sky and meteorological conditions.(1)A two-layer aerosol model specific to Xinjiang was developed to capture the vertical distributions of aerosols based on multiple data sources including lidar,GPS sounding,ground meteorological observations,and profiles from the ECMWF reanalysis version 5(ERA5)*** results show that the ERA5/PBLH(planetary boundary layer height)and ERA5/ALH(aerosol layer height)could be used to establish the two-layer aerosol model and characterize the vertical distribution of aerosols in Xinjiang Region.(2)Using the Santa Barbara Discrete Atmospheric Radiative Transfer(SBDART)model,a localized inverse model of clear-sky DSSR was *** parameter adjustment and using the optimal combination of input parameters for DSSR simulation together with the two-layer aerosol model,the model-simulated DSSR(DSSRSBD)under clear-sky conditions improved significantly compared to the initial results,with all fitting indices greatly improved.(3)In addition,the study demonstrated that the impact of the two-layer aerosol model on DSSR was more pronounced under dust conditions than clear-sky conditions.(4)Using the localized clear-sky DSSR inversion model and its required parameters,simulations were also conducted to capture the spatiotemporal distribution of DSSR under clear-sky conditions in Xinjiang from 2017 to *** annual average DSSR_(SBD)under clear-sky conditions in Xinjiang during 2017–2019 was 606.78 W m^(-2),while DSSR from CERES(DSSR_(CER))under the same conditions was generally higher(703.95 W m^(-2)).(5)It is found that satellite remote sensing products experienced data loss in high-altitude snow areas,where numerical simulation technology could ser

关键词： downward surface shortwave radiation(DSSR) aerosol vertical distribution Clouds and the Earth’s Radiant Energy System(CERES) Santa Barbara Discrete Atmospheric Radiative Transfer(SBDART) Xinjiang

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A Systematic Review of Contrast-Induced Acute Kidney Injury

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Open Journal of Nephrology 2024年第2期14卷 185-195页

作者： Xing Li qiong liu The First Clinical College of Chongqing Medical University Chongqing China Department of Emergency The First Affiliated Hospital of Chongqing Medical University Chongqing China

Background: Contrast-induced acute kidney injury (CI-AKI) is the third most common cause of AKI in hospitalized patients. Contrast agents mainly cause acute kidney injury through hypoxic damage to renal parenchyma and toxic effects on renal capillaries and tubules. Patients with CI-AKI are more likely to experience adverse events, including longer hospital stay and costs, longer ICU stay, and higher mortality rates. This article elaborates on the definition, epidemiology, risk factors, pathogenesis, and prevention strategies of CI-AKI. Methods: We conducted an extensive literature search using contrast agents and AKI as keywords to identify relevant studies on CI-AKI. Conclusion: CI-AKI is a significant clinical challenge that requires a multifaceted approach to prevention and management. Understanding the risk factors, pathophysiology, and current best practices is essential for healthcare providers to optimize patient care and improve outcomes in those undergoing contrast-enhanced imaging procedures. Hydration therapy is currently the main prevention method, but antioxidants may also become a new strategy.

关键词： CI-AKI ROS Preventive Strategies Antioxidants

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Mannanase improves the growth performance of broilers by alleviating inflammation of the intestinal epithelium and improving intestinal microbiota

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Animal Nutrition 2024年第1期16卷 376-394页

作者： Xiaodan Zhang Huiping Xu Lu Gong Jiao Wang Jianyang Fu Zengpeng Lv Liangjuan Zhou Xuejun Li qiong liu Pingyu Xia Yuming Guo State Key Laboratory of Animal Nutrition and Feeding College of Animal Science and Technology China Agricultural University Beijing 100193 China Beijing Strowin Biotechnology Co. Ltd. Beijing 100094 China

This experiment aimed to discuss and reveal the effect and mechanism of mannanase on intestinal inflammation in broilers triggered by a soybean meal diet. In this experiment, 384 Arbor Acres broilers at 1 d old were randomly divided into 3 treatment groups. The broilers were fed a corn-soybean meal basal diet, a low-energy diet (metabolizable energy reduced by 50 kcal/kg), and a low-energy diet supplemented with 100 mg/kg mannanase for 42 d. The low-energy diet increased feed conversion ratio from 0 to 42 d, reduced ileal villus height and villus height-to-crypt depth ratio and upregulated the expression of nuclear factor kappa B ( NF-κB ) in the ileum ( P lium of broilers ( P < 0.05). In addition, mannanase upregulated the expression of claudin-1 ( CLDN1 ) and zonula occludens-1 ( ZO-1 ) in the jejunum at 21 d, downregulated the expression of ileal NF-κB , and increased the content of isobutyric acid in the cecum of broilers ( P < 0.05). The results for the ileal microbiota showed that a low-energy diet led to a decrease in the relative abundance of Lactobacillus reuteri in the ileum of broilers. The addition of mannanase increased the relative abundance of Lactobacillus-KC45b and Lactobacillus johnsonii in broilers. Furthermore, a low-energy diet reduced the relative abundance of Butyricicoccus in the intestine of broilers and inhibited oxidative phosphorylation and phosphoinositol metabolism. Mannanase increased the relative abundance of Odoribacter , promoted energy metabolism and N-glycan biosynthesis, and increased the activities of GH3 and GH18. It is concluded that mannanase could improve the growth performance of broilers by reducing the expression of NF-κB in the

关键词： Broiler Low-energy diet Mannanase Intestinal inflammatory response Intestinal microbiota Metagenome

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Chinese New Year Folk Culture Adds Impetus to Guizhou's Colorful Tourism Economy

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China & The World Cultural Exchange 2024年第4期 14-17页

作者： Zhang Hongxi Liao Mengying liu qiong Guizhou Minzu University Guiyang Institute of Information Science and Technology

During the Chinese New Year in 2024,a series of traditional folk activities were held all over Guizhou,attracting a large number of travelers,with the number of received travelers and comprehensive income of Guizhou r... 详细信息

关键词： income Guizhou attracting

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场域、模式、动能:高效能治理视阈下中国社会治理共同体的建设

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改革 2024年第8期 140-155页

作者：刘琼莲中共天津市委党校社会学教研部(应急管理培训中心)

高效能治理是社会治理共同体高质量发展的重要保障。建设价值—工具型社会治理共同体是我国坚持和完善共建共治共享社会治理制度、推进基层治理现代化的现实选择。当前,全国各地从家庭治理、社区治理、城市治理、农村治理、网络治理等... 详细信息

高效能治理是社会治理共同体高质量发展的重要保障。建设价值—工具型社会治理共同体是我国坚持和完善共建共治共享社会治理制度、推进基层治理现代化的现实选择。当前,全国各地从家庭治理、社区治理、城市治理、农村治理、网络治理等场域探索基层社会治理共同体的发展样态与基本方式,不断创新“共同缔造”“枫桥经验”“千万工程”“智慧治理”等实践,坚持人民至上,最大限度地把我国共建共治共享制度优势转化为基层治理效能。新时代更好地适应人们对美好生活的强烈愿望,需要持续完善党建引领机制,促进多方主体共建共治共享;健全协同合作机制,完善高质高效的基层治理共同体;创设制度型开放机制,优化全领域全要素的利益共同体;构建应急处突机制,形成跨区域跨部门的应急治理共同体;创新智慧治理机制,借助数据算力算法赋能社会治理共同体,不断增强社会治理共同体的发展动能。

关键词：社会治理共同体高效能治理发展动能基本场域

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基于人体和场景上下文的多人3D姿态估计

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软件学报 2024年第4期35卷 2039-2054页

作者：何建航孙郡瑤刘琼华南理工大学软件学院广东广州510006

深度歧义是单帧图像多人3D姿态估计面临的重要挑战,提取图像上下文对缓解深度歧义极具潜力.自顶向下方法大多基于人体检测建模关键点关系,人体包围框粒度粗背景噪声占比较大,极易导致关键点偏移或误匹配,还将影响基于人体尺度因子估计... 详细信息

深度歧义是单帧图像多人3D姿态估计面临的重要挑战,提取图像上下文对缓解深度歧义极具潜力.自顶向下方法大多基于人体检测建模关键点关系,人体包围框粒度粗背景噪声占比较大,极易导致关键点偏移或误匹配,还将影响基于人体尺度因子估计绝对深度的可靠性.自底向上的方法直接检出图像中的人体关键点再逐一恢复3D人体姿态.虽然能够显式获取场景上下文,但在相对深度估计方面处于劣势.提出新的双分支网络,自顶向下分支基于关键点区域提议提取人体上下文,自底向上分支基于三维空间提取场景上下文.提出带噪声抑制的人体上下文提取方法,通过建模“关键点区域提议”描述人体目标,建模姿态关联的动态稀疏关键点关系剔除弱连接减少噪声传播.提出从鸟瞰视角提取场景上下文的方法,通过建模图像深度特征并映射鸟瞰平面获得三维空间人体位置布局;设计人体和场景上下文融合网络预测人体绝对深度.在公开数据集MuPoTS-3D和Human3.6M上的实验结果表明:与同类先进模型相比,所提模型HSC-Pose的相对和绝对3D关键点位置精度至少提高2.2%和0.5%;平均根关键点位置误差至少降低4.2 mm.

关键词：多人场景3D姿态估计关键点区域提议人体上下文场景上下文人体绝对深度

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政府开放数据平台FAIR原则评估指标体系及实证研究

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现代情报 2024年第2期44卷 4-16页

作者：刘桂锋陈书贤刘琼江苏大学科技信息研究所江苏镇江212013 江苏大学图书馆江苏镇江212013

[目的/意义]评估政府开放数据平台FAIR原则的实施效果有助于平台规范标识符、统一元数据标准等,增强政府数据的发现、共享和重用。[方法/过程]采用网络调研法,借鉴国际代表性评估框架,结合调研构建面向政府开放数据平台的FAIR原则评估... 详细信息

[目的/意义]评估政府开放数据平台FAIR原则的实施效果有助于平台规范标识符、统一元数据标准等,增强政府数据的发现、共享和重用。[方法/过程]采用网络调研法,借鉴国际代表性评估框架,结合调研构建面向政府开放数据平台的FAIR原则评估指标体系,并选取国内外8个样本平台作为案例,从可发现、可访问等4个维度展开评估分析,比较FAIR原则实施状况和差异。[结果/结论]从永久性标识符方案、元数据标准规范、数据使用许可等方面提出相应改进策略,完善国内政府开放数据平台数据管理规范,为后续相关平台的建设与利用提供理论指导和实践借鉴。

关键词：政府开放数据数据平台 FAIR原则数据科学开放科学

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电针调控腺苷酸活化蛋白激酶/Kruppel样因子2信号通路促血管新生减轻心肌缺血再灌注损伤大鼠心肌损伤

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针刺研究 2024年第9期49卷 902-908页

作者：刘琼琼张宏如顾一煌南京中医药大学针灸推拿学院·养生康复学院南京210023 南京中医药大学淡安书院南京210023

目的:探讨电针通过调控腺苷酸活化蛋白激酶(AMPK)/Kruppel样因子2(KLF2)信号通路介导血管新生减轻心肌缺血再灌注损伤(MIRI)的效应机制。方法:SD大鼠随机分为假手术组、模型组和电针组,每组10只。采用左冠状动脉前降支结扎法制备MIRI模... 详细信息

目的:探讨电针通过调控腺苷酸活化蛋白激酶(AMPK)/Kruppel样因子2(KLF2)信号通路介导血管新生减轻心肌缺血再灌注损伤(MIRI)的效应机制。方法:SD大鼠随机分为假手术组、模型组和电针组,每组10只。采用左冠状动脉前降支结扎法制备MIRI模型。电针组电针“内关”,每次20 min,每天1次,连续5 d。采用超声心动图检测大鼠心脏射血分数(EF)评价心功能;HE染色观察大鼠心肌组织形态学变化;免疫组织化学法检测大鼠缺血心肌新生血管密度(MVD);Western blot法检测大鼠缺血心肌组织磷酸化AMPK(p-AMPK)、AMPK、KLF2、血管内皮生长因子(VEGF)蛋白表达量;ELISA法检测大鼠缺血心肌组织血管内皮生长因子受体2(VEGFR2)含量。结果:与假手术组比较,模型组大鼠EF降低(P<0.01),心肌纤维明显损伤并伴炎性细胞浸润,MVD增加(P<0.05),心肌缺血组织p-AMPK、AMPK、VEGF蛋白表达及VEGFR2含量升高(P<0.05,P<0.01),KLF2表达降低(P<0.05)。与模型组比较,电针组大鼠EF升高(P<0.01),心肌纤维损伤明显减轻、炎性细胞浸润减少,MVD增加(P<0.01),心肌缺血组织p-AMPK、AMPK、KLF2、VEGF蛋白表达及VEGFR2含量升高(P<0.01)。结论:电针可能通过调控AMPK/KLF2信号通路的表达来促进MIRI大鼠血管新生,减轻心肌损伤,达到心肌保护效应。

关键词：电针心肌缺血再灌注损伤血管新生腺苷酸活化蛋白激酶/Kruppel样因子2信号通路血管内皮生长因子

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