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The shifts of precipitation phases and their impacts

Science China Earth Sciences 2025年

作者： Xuemei li tao CHE Yuanlong TANG Huan'e DUAN Guigang WANG Xu ZHANG Chuanming YANG Jun WU Yue ZHANG Lanhai li Faculty of Geomatics Lanzhou Jiaotong University National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring Key Laboratory of Science and Technology in Surveying & Mapping Gansu Province Key Laboratory of Cryospheric Science and Frozen Soil Engineering Heihe Remote Sensing Experimental Research StationNorthwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone Xinjiang Institute of Ecology and Geography Chinese academy of Sciences Tianshan Snow Cover and Avalanche Observation and Research Station of Xinjiang

Precipitation comes in various phases, including rainfall, snowfall, sleet, and hail. Shifts of precipitation phases, as well as changes in precipitation amount, intensity, and frequency, have significant impacts on regional climate, hydrology,ecology, and the energy balance of the land-atmosphere system. Over the past century, certain progress has been achieved in aspects such as the observation, discrimination, transformation, and impact of precipitation phases. Mainly including:since the1980s, studies on the observation, formation mechanism, and prediction of precipitation phases have gradually received greater attention and reached a certain scale. The estimation of different precipitation phases using new detection theories and methods has become a research focus. Avariety of discrimination methods or schemes, such as the potential thickness threshold method of the air layer, the temperature threshold method of the characteristic layer, and the near-surface air temperature threshold method,have emerged one after another. Meanwhile, comparative studies on the discrimination accuracy and applicability assessment of multiple methods or schemes have also been carried out simultaneously. In recent years, the shift of precipitation from solid to liquid (SPSL) in the mid-to-high latitudes of the Northern Hemisphere has become more pronounced due to global warming and human activities. It leads to an increase in rain-on-snow (ROS) events and avalanche disasters, affecting the speed, intensity, and duration of spring snow-melting, accelerating sea ice and glacier melting, releasing carbon from permafrost, altering soil moisture, productivity, and phenological characteristics of ecosystems, and thereby affecting their structures, processes, qualities, and service functions. Although some progress has been made in the study of precipitation phases, there remains considerable research potential in terms of completeness of basic data, reliability of discrimination schemes,

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EBD-YOLO：a lightweight auxiliary driving detection algorithm based on YOLOv5

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Optoelectronics Letters 2025年

作者： SUN lianshuai SHI tao DING Yao li Song Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems， School of Electrical Engineer-ing and Automation， Tianjin University of Technology College of Electrical Engineering， North China University of Science and Technology

A lightweight road-assistant detection algorithm， EBD-YOLO， based on YOLOv5s is proposed to address the problems of high model complexity， computation cost， and difficulty in deployment on resource-limited embedded terminals in existing assisted driving detection algorithms. First， lightweight Transformer model EfficientViT was used as the backbone feature extraction network of YOLOv5s model to reduce network parameters and calculation costs. Secondly， a Focal-GIoU Loss function is proposed for bounding box regression to accelerate model convergence and reduce loss. Thirdly， the feature pyramid structure is improved to a weighted bi-directional feature pyramid network (BiFPN) to enhance localization and semantic features. Then， a dynamic head framework is added to unify the attention mechanism with the object detection head to improve its performance. Finally， a Soft-CIoU＿NMS algorithm is proposed in the post-processing stage to enhance occluded targets' localization and detection ability and reduce the missed detection rate. We conducted experiments on the KITTI and BDD100K datasets for autonomous driving， and the results showed that the EBD-YOLO model reduced in size by 38.4% and 37.2%， respectively. In comparison， the computational cost was reduced by 48.1%. As measured by mAP@0.5， the detection accuracy improved by 0.5% and 5.8%， respectively， and mAP@0.5:0.95 improved by 2.8% and 7%， respectively. These improvements satisfied the requirements for deployment on embedded terminals in cars.

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试论慢性胰腺炎继发糖尿病的中医辨治

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中国中西医结合杂志 2021年第1期41卷 91-95页

作者：李俊柏力萄韦茂英肖瑶晏蔚田魏军平中国中医科学院广安门医院内分泌科北京100053 重庆医科大学附属第二医院中医科重庆400010

目的慢性胰腺炎继发糖尿病的发病率逐年增高,且临床误诊率极高,但目前慢性胰腺炎继发糖尿病尚缺乏系统的证候规律认识。笔者从胰脾解剖、生理、病理分析了胰脾相关理论,认为在功能上"胰属脾"。同时基于胰脾功能相关的理论,对慢性胰腺炎... 详细信息

目的慢性胰腺炎继发糖尿病的发病率逐年增高,且临床误诊率极高,但目前慢性胰腺炎继发糖尿病尚缺乏系统的证候规律认识。笔者从胰脾解剖、生理、病理分析了胰脾相关理论,认为在功能上"胰属脾"。同时基于胰脾功能相关的理论,对慢性胰腺炎继发糖尿病的病因病机做了探讨,分别从"脾损为本,分期论治""以通为用,护胰缓糖""补气升提,减脆稳糖"等方面对辨治规律做了论述。

关键词：慢性胰腺炎糖尿病胰脾理论分期诊治

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微生物驱油技术的研究与应用

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河北化工 2011年第7期34卷 59-61,71页

作者：刘尧刚李佰涛中国石油长庆油田第三采油厂甘肃白银750006

从微生物驱油的原理入手,详细介绍了微生物驱油的试验过程及结果,并对长庆油田第三采油厂盘33-21区块实施微生物驱油技术前后生产情况进行了详尽的对比和分析,利于该项技术的进一步应用。

关键词：微生物驱油研究应用注水

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鱼腥草中黄酮类化合物提取分离方法的研究进展

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广东农业科学 2011年第6期38卷 158-159,167页

作者：赵国文张丽萍龚靖白利涛冯朋四川理工学院材料与化学工程学院四川自贡643000 成都龙泉高科天然药业有限公司四川成都610100

黄酮类化合物是具有广泛应用前景的天然药物。鱼腥草资源丰富,可作为黄酮类化合物的主要来源之一。阐述了鱼腥草黄酮类化合物的提取、分离方法,并对各提取分离方法的利弊进行了分析;提出了鱼腥草黄酮类化合物提取分离技术的发展前景。

关键词：鱼腥草黄酮类化合物提取分离

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Escobar-lichnerowicz-Reilly type eigenvalue estimate for the weighted p-Laplacian on manifolds with integral Ricci curvature

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Acta Mathematica Sinica,English Series 2025年

作者： Yong tao liU School of Mathematics and Statistics Ningxia University

Under the assumption of integral m-Bakry-émery Ricci curvature, we give an Escobar-lichnerowiczReilly type eigenvalue estimate for the weighted p-Laplacian on compact smooth metric measure spaces with or without boundaries. This conclusion is a generalization and improvement of Wang-li’s result in the case of integral Bakry-émery Ricci curvature, and of Seto-Wei’s one to the compact metric measure space setting. Our main tools are the weighted p-Bochner formula and the weighted p-Reilly formula.

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大连黑石礁海区浮游动物的群落结构及时空格局

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大连水产学院学报 2005年第4期20卷 270-277页

作者：赵文殷旭旺李柏弢霍元子刘青大连水产学院辽宁省省级高校水生生物学重点实验室辽宁大连116023

于2001年9月～2002年9月对大连黑石礁海区浮游动物的生态学进行了调查研究,共鉴定出桡足类13种,枝角类4种,其它为毛颚动物、被囊动物、轮虫和原生动物等,桡足类是浮游动物中的主要类群;浮游动物数量和生物量的周年变化基本上为单峰形,... 详细信息

于2001年9月～2002年9月对大连黑石礁海区浮游动物的生态学进行了调查研究,共鉴定出桡足类13种,枝角类4种,其它为毛颚动物、被囊动物、轮虫和原生动物等,桡足类是浮游动物中的主要类群;浮游动物数量和生物量的周年变化基本上为单峰形,高峰期位于8月.回归分析表明,浮游动物数量的变化与水温有一定的相关性.此外,黑石礁海区浮游动物群落小型化趋势较为明显.

关键词：群落结构时空分布浮游动物黑石礁海区

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InNi alloy-induced interface effect promoting the parallel electron transfer: improved photothermal catalytic CO2 hydrogenation

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Science China Chemistry 2025年

作者： Haoyu Zhang Yuhang li Yu Nie Xinyu Dou Haodong Ji Xin Tan Jinhua Ye tao Yu School of Chemical Engineering and Technology Tianjin University Eco-environment and Resource Efficiency Research Laboratory School of Environment and Energy Peking University Shenzhen Graduate School School of Environmental Science and Engineering Tianjin University Advanced Catalytic Materials Research Center School of Materials Science and Engineering Tianjin University Research Center for Solar Driven Carbon Neutrality Hebei University

Photothermal catalytic CO2hydrogenation is an effective means of utilizing carbon ***,it is severely limited in terms of kinetics and ***,it is necessary to meticulously design catalysts to solve this ***,a sandwich structured NiO@InNi/In2O3is designed to intrinsically regulate the direction of photogenerated carriers transfer,resulting in a CO yield of 42.97 mmol g-1h-1(1290.3μmol h-1) with a selectivity near to 100%.InNi alloy favors the collection of photogenerated carriers by the parallel way and enhancement of the adsorption and activation of *** grown on the surface of InNi alloy not only improves the adsorption of H2and provides sufficient H+for the reaction,but also makes InNi alloy more stable during the reaction *** photothermal effect caused by In2O3accelerates the transfer of photogenerated carriers and increases the surface temperature of the catalyst,thereby synergistically promoting the reaction from a kinetic *** work ameliorates the kinetic and thermodynamic limitations of the photothermal catalytic CO2hydrogenation process through rationally designing the electron transfer direction of the sandwich structured catalysts to parallel way.

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Estimation of Chloride Diffusivity in Hydrated Tricalcium Silicate Using a Hydration-Diffusion Integrated Method

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 49-64页

作者： WANG Xin SHEN Dejian tao Sijie liU Ruixin WU Shengxing College of Civil and Transportation Engineering Hohai UniversityNanjing 210098China

This study aims to develop a chloride diffusion simulation method that considers the hydration microstructure and pore solution properties during the hydration of tricalcium silicate(C3S).The method combines the hydration simulation,thermodynamic calculation,and finite element analysis to examine the effects of pore solution,including effect of electrochemical potential,effect of chemical activity,and effect of mechanical interactions between ions,on the chloride effective diffusion coefficient of hydrated C3S *** results indicate that the effect of electrochemical potential on chloride diffusion becomes stronger with increasing hydration age due to the increase in the content of hydrated calcium silicate;as the hydration age increases,the effect of chemical activity on chloride diffusion weakens when the number of diffusible elements decreases;the effect of mechanical interactions between ions on chloride diffusion decreases with the increase of hydration age.

关键词： tricalcium silicate simulation method chloride diffusion coefficient pore solution

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Operation Risk Analysis of Electric Vehicle With Ultra-fast Charging Integrated to Distribution Network Considering the Bearing Capacity of Power System

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Dianwang Jishu/Power System Technology 2025年第1期49卷 187-197页

作者： Xu, Yanchun li, Sijia Zhang, tao Mi, Lu Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station China Three Gorges University Hubei Province Yichang 443002 China Department of Electrical and Computer Engineering Texas A & M University TX 77840 United States

At present, the access of distributed generation and electric vehicles with ultra-fast charging to the distribution network will increase the operational risk of the system. Aiming at the problem that the existing risk assessment indicators fail to consider the system capacity effectively, this paper proposed a comprehensive index of risk assessment of distribution networks considering the power system's capacity. The distributed generation output model and the electric vehicle load model with ultra-fast charging were first constructed. Then, the index based on the distribution entropy theory was used to measure the risk caused by the over-limit of state variables such as voltage and power and the uncertainty of their distribution. The index based on the Theil entropy theory was introduced to measure the risk caused by the equilibrium degree of the incremental distribution of state variables after the load impacted the system. The weight analysis method combining the order relationship method and the objective weighting method was used to evaluate the system risk comprehensively. Finally, the rationality of the comprehensive index was calculated and analyzed by testing the IEEE 33-node system. The results show that the comprehensive index proposed can effectively evaluate the potential risk when the system does not exceed the limit and consider that the ultra-fast charging of electric vehicles will change the time series distribution characteristics of comprehensive risk. The research in this paper can provide theoretical guidance for the safe operation of electric vehicles. with ultra-fast charging connected to the distribution network. © 2025 Power System Technology Press. All rights reserved.

关键词： Risk analysis

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