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China Foundry 2025年第1期22卷 33-44页

作者： Wei Yuan Hai-dong Zhao Xu Shen chun Zou Yuan Liu Qing-yan Xu National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of TechnologyGuangzhou 510640China Key Laboratory for Advanced Materials Processing Technology(Ministry of Education) Tsinghua UniversityBeijing 100084China

Microporosity formed in the solidification process of Al alloys is detrimental to the alloy properties.A two-dimensional cellular automaton(CA)model was developed to simulate the microstructure and microporosity formation in Al-Cu alloys,considering variations in Cu content and solidification *** results indicate that the Cu content primarily influences the growth of *** validate the model,directional solidification experiments were conducted on Al-Cu alloys with varing Cu contents and withdrawal *** experimental results of dendrites and microporosity characteristics agree well with the predictions from the developed model,thus confirming the validity of the *** alloy’s liquidus temperature,dendrite morphology,and hydrogen saturation solubility arising from different Cu contents have significant effects on microporosity *** withdrawal rate primarily affects the nucleation of hydrogen microporosity by altering cooling rates and dendritic growth rates,resulting in different microporosity characteristics.

关键词： microporosity dendrites cellular automaton Al-Cu alloys directional solidification

A novel method for simultaneous measurement of^(222)Rn and^(220)Rn progeny concentrations measured by an alpha spectrometer

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Nuclear Science and Techniques 2025年第1期36卷 127-139页

作者： Zhong-Kai Fan Jia-Le Sun Hao-Xuan Li Xiang-Ming Cai Hui yang shou-Kang Qiu yan-Liang Tan Jian Shan School of Nuclear Science and Technology University of South ChinaHengyang 421001China College of Physics and Electronic Engineering Hengyang Normal UniversityHengyang 421008China

The accumulation of^(222)Rn and^(220)Rn progeny in poorly ventilated environments poses the risk of natural radiation exposure to the public.A previous study indicated that satisfactory results in determining the^(222)Rn and^(220)Rn progeny concentrations by measuring the total alpha counts at five time intervals within 560 min should be expected only in the case of high progeny concentrations in *** complete the measurement within a relatively short period and adapt it for simultaneous measurements at comparatively lower^(222)Rn and^(220)Rn progeny concentrations,a novel mathematical model was proposed based on the radioactive decay *** model employs a nonlinear fitting method to distinguish nuclides with overlapping spectra by utilizing the alpha particle counts of non-overlapping spectra within consecutive measurement cycles to obtain the concentrations of^(222)Rn and^(220)Rn progeny in *** verification experiments were conducted using an alpha *** experimental results demonstrate that the concentrations of^(222)Rn and^(220)Rn progeny calculated by the new method align more closely with the actual circumstances than those calculated by the total count method,and their relative uncertainties are all within±16%.Furthermore,the measurement time was reduced to 90 min,representing an acceleration of 84%.The improved capability of the new method in distinguishing alpha particles with similar energies emitted from ^(218)Po and^(212)Bi,both approximately 6 MeV,contributed to realizing more accurate *** proposed method has the potential advantage of measuring relatively low concentrations of^(222)Rn and^(220)Rn progeny in air more quickly via air filtration.

关键词： ^(222)Rn ^(220)Rn Progeny concentration Nonlinear fitting method Alpha spectrometer

Impact fracturing of rock-like material using carbon dioxide under different temperatures and pressures

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Journal of Rock Mechanics and Geotechnical Engineering 2025年第1期17卷 370-384页

作者： Shaobin Hu Zhengyong yan chun Zhu Manchao He Shuogang Pang College of Civil and Transportation Engineering Hohai UniversityNanjing210098China Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai UniversityNanjing210098China School of Earth Sciences and Engineering Hohai UniversityNanjing210098China National Key Laboratory for Disaster Prevention Controland Intelligent Construction and Maintenance of Tunnel EngineeringChina University of Mining and Technology(Beijing)Beijing100083China School of Mechanics and Civil Engineering China University of Mining and TechnologyBeijing100083China

Unconventional resources (oil, gas, and geothermal) are often buried deep underground within dense rock strata and complex geological structures, making it increasingly difficult to create volumetric fractures through conventional hydraulic fracturing. This paper introduces a novel method of supercritical energetic fluid thermal shock fracturing. It pioneers a CO_(2) deflagration impact triaxial pneumatic fracturing experimental system, using high-strength similar materials to simulate deep, hard rock masses. The study investigates the rock-breaking process and crack propagation patterns under supercritical CO_(2) thermal shock, revealing and discussing the types of thermal shock-induced fractures, their formation conditions, and discrimination criteria. The research indicates that higher supercritical CO_(2) thermal shock pressures and faster pressure release rates facilitate the formation of radial branching fractures, circumferential cracks, and branch cracks. Typically, CO_(2) thermal shock generates 3–5 radial main cracks, which is significantly more than the single main crack formed by hydraulic fracturing. The formation of branched cracks is often caused by compression-shear failure and occurs under relatively harsh conditions, determined by the confining pressure, rock properties, peak thermal shock pressure, and the pressure sustained post-decompression. The findings are expected to offer a safe, efficient, and controllable shockwave method of supercritical fluid thermal shock fracturing for the exploitation of deep unconventional oil and gas resources.

关键词： Cracking mechanism Supercritical CO_(2) True triaxial experimental Impact fracturing

Advances and applications of genome-edited animal models for severe combined immunodeficiency

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Zoological Research 2025年第01期 249-260页

作者： Xiao Zheng chun-Hui Huang Sen yan Ming-Deng Rong Stomatological Hospital School of Stomatology Southern Medical University Guangdong Key Laboratory of Non-Human Primate Models Guangdong-Hongkong-Macau Institute of CNS Regeneration Jinan University School of medicine Jinan University Department of Neurology Guangzhou Red Cross Hospital Faculty of Medical Science Jinan University

Severe combined immunodeficiency disease(SCID),characterized by profound immune system dysfunction,can lead to life-threatening infections and death. Animal models play a pivotal role in elucidating biological processes and advancing therapeutic strategies. Recent advances in gene-editing technologies, including zincfinger nucleases(ZFNs), transcription activator-like effector nucleases(TALENs), CRISPR/Cas9, and base editing, have significantly enhanced the generation of SCID models. These models have not only deepened our understanding of disease pathophysiology but have also driven progress in cancer therapy, stem cell transplantation, organ transplantation, and infectious *** comprehensive overview of current SCID models generated using novel gene-editing approaches,highlighting their potential applications in translational medicine and their role in advancing biomedical research.

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Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： Li An Jianyi Li Yuanmiao Sun Jiamin Zhu Justin Zhu Yeow Seow Hong Zhang Nan Zhang Pinxian Xi Zhichuan J.Xu chun‑Hua yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

The machine learning implementation and theoretical foundations of intelligent control of accelerator particle beams

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 199-200页

作者： XueQing yan State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China

The intelligent control of accelerator particle beams,achieved through machine learning,offers a new opportunity for the design and regulation of high-power,high-intensity *** recent years,this technology has been applied in several practical *** instance,the DeepMind team successfully used reinforcement learning to control the plasma in a Tokamak device with 19 control magnets[1].

关键词： particle instance accelerator

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柴可夫滋水涵木法治疗围绝经期睡眠障碍经验

河南中医 2018年第11期38卷 1665-1668页

作者：寿艳春柴可夫诸暨市人民医院璜山分院浙江诸暨311809 浙江中医药大学浙江杭州310053

围绝经期睡眠障碍病机为本虚标实,虚实夹杂。肝肾不足为本病之本,肝郁化火,心火偏亢为本病之标,故治疗宜从滋水涵木与清热解郁着手。根据本病的基本病机,柴教授确立了滋补肝肾,疏肝解郁,养心安神的治疗大法,以一贯煎、滋水清肝饮为基础... 详细信息

围绝经期睡眠障碍病机为本虚标实,虚实夹杂。肝肾不足为本病之本,肝郁化火,心火偏亢为本病之标,故治疗宜从滋水涵木与清热解郁着手。根据本病的基本病机,柴教授确立了滋补肝肾,疏肝解郁,养心安神的治疗大法,以一贯煎、滋水清肝饮为基础方加减,在补益肝肾的基础上,兼顾疏肝养心安神,使肾水得至,水升火降,心神得安,肝用得立,阴阳平衡。另外还采用膏方治疗,精神调摄,饮食调节,运动锻炼等综合施治方案以保证疗效。

关键词：围绝经期睡眠障碍滋水涵木法一贯煎滋水清肝饮柴可夫

Impact of community public health care on treatment effect,health cognition,and self-management in patients with type 2 diabetes

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World Journal of Clinical Cases 2025年第5期13卷 22-29页

作者： Hong Shi chun Liu Hong-yan Luo Department of Infrastructure Operation West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Public Health Minzu Street Community Health Service CenterWuhan 430000Hubei ProvinceChina Caotang Community Health Service Center Chengdu 610031Sichuan ProvinceChina

BACKGROUND At present,China has become the country with the largest number of individuals with diabetes mellitus(DM)in the world,with a total of approximately 140 million patients,the majority of whom have type 2 DM(T2DM).Based on conven-tional nursing methods,community home care has important clinical significance in controlling blood sugar and disease *** To explore the impact of community public health nursing on treatment effect,health cognition,and self-management in patients with *** One hundred patients with T2DM were selected as the research *** patients were divided into either a conventional nursing group or community nursing(CN)group using the random number table *** conventional nursing group(50 cases)received routine care,while the CN group(50 cases)received community public health care in addition to routine care as that for the conventional nursing *** rate of excellent and good blood glucose control,fasting blood glucose before and after care,2-h postprandial blood glucose,health cognition,and self-management ability,and patient satisfaction were compared between the two *** The CN group had a higher rate of excellent blood sugar control than the conventional nursing group(88%vs 70%,P0.05).After nursing,fasting blood glucose and 2-h postprandial blood glucose were reduced to varying degrees in both groups,and both blood glucose levels in the CN group were lower than those of the conventional nursing group(P<0.05).Compared with the scores before care,the cognitive level score for diabetes and self-management ability score improved after care in both *** cognitive level and self-management ability of patients in the CN group were higher than those of the conventional nursing group(P<0.05).The overall satisfaction of the CN group was better than

关键词： Community public health care Type 2 diabetes Blood sugar control Self-management ability Cognition level

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RTU信息在DDN网络中数字透传的实现

电力系统通信 2007年第4期28卷 43-46页

作者：汤亿则寿春燕浙江省电力公司浙江杭州310007

传统的PCM专线是目前电力系统主要采用的RTU接入方式之一,该方式存在成本高、质量差等缺点。文章提出一种新型的RTU信息专线接入实现方案,能充分利用DDN网络资源,同时开发一种专用数字透传时隙复用设备,将RTU信息映射到64 k时隙中传输,... 详细信息

传统的PCM专线是目前电力系统主要采用的RTU接入方式之一,该方式存在成本高、质量差等缺点。文章提出一种新型的RTU信息专线接入实现方案,能充分利用DDN网络资源,同时开发一种专用数字透传时隙复用设备,将RTU信息映射到64 k时隙中传输,从而为自动化用户提供低成本、优质高效的DDN数字透传RTU信息服务。

关键词：数字数据网数字透传远程终端控制单元

Effects of salinity and betaine addition on anaerobic granular sludge properties and microbial community succession patterns in organic saline wastewater

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Journal of Environmental Sciences 2025年第1期147卷 310-321页

作者： Zhifei Zhang Jinquan Wan Gang Ye yan Wang Yuwei Bai Zhicheng yan College of Environment and Energy South China University of TechnologyGuangzhou 510006China Shijiazhuang High Tech Industrial Development Zone Water Supply and Drainage Company Shijiazhuang 050000China

In this study,the effects of different salinity gradients and addition of compatible solutes on anaerobic treated effluent water qualities,sludge characteristics and microbial communities were *** increase in salinity resulted in a decrease in particle size of the granular sludge,which was concentrated in the range of 0.5-1.0 *** content of EPS(extracellular polymeric substances)in the granular sludge gradually increased with increasing salinity and the addition of betaine(a typical compatible solute).Meanwhile,the microbial community structure was significantly affected by salinity,with high salinity reducing the diversity of *** higher salinity,Patescibacteria and Proteobacteria gradually became the dominant phylum,with relative abundance increasing to 13.53%and 12.16%at 20 g/L *** and its subordinate Desulfovibrio,which secrete EPS in large quantities,dominated significantly after betaine *** relative abundance reached 13.65%and 7.86%at phylum level and genus *** effect of these changes on the treated effluent was shown as the average chemical oxygen demand(COD)removal rate decreased from 82.10%to 79.71%,78.01%,68.51%and 64.55%when the salinity gradually increased from 2 g/L to 6,10,16 and 20 g/*** the salinity of 20 g/L,average COD removal increased to 71.65%by the addition of 2 mmol/L *** gradient elevated salinity and the exogenous addition of betaine played an important role in achieving stability of the anaerobic system in a highly saline environment,which provided a feasible strategy for anaerobic treatment of organic saline wastewater.

关键词： Organic saline wastewater Anaerobic granular sludge Compatible solute Extracellular polymeric substance Microbial community