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Clinical characteristics of postoperative necrotizing enterocolitis in patients with congenital jejunoileal atresia and its risk factors

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World Journal of Pediatric Surgery 2024年第1期7卷 42-46页

作者： Xiaofeng Xiong Wei Lu Fuzhong Xing yuan Cai Jixin Yang yuhang yuan Jiexiong Feng Xuyong Chen Department of Pediatric Surgery Tongji Hospital of Tongji Medical College of Huazhong University of Science and TechnologyWuhanHubeiChina Department of Neonate Surgery Wuhan Children's HospitalHuazhong University of Science and TechnologyWuhanHubeiChina Department of Pediatric Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina

Objective To review postoperative necrotizing enterocolitis(NEC)in patients with jejunoileal atresia(JIA)and to explore the potential risk factors related to the concurrence *** Patients diagnosed with JIA who received surgical treatment from January 2016 to June 2021 were ***,viral infection of the fetus,transfusion within 48 hours before NEC,sepsis before JIA repair,pathological and anatomical classification of JIA,combined malformation,occurrence time of NEC after the operation,treatment,and prognosis of patients were *** were divided into NEC group and non-NEC group,and all patients were followed up for 3-6 months to observe for *** A total of 180 patients with JIA were included,of whom 12 were diagnosed with NEC after surgery and 1 patient with NEC died during *** average age,birth weight,gestational age,proportion of premature infants,proportion of preoperative infections,and pathological classification of JIA did not significantly differ between the two *** probability of patients with proximal jejunal atresia(PJA)in the NEC group(58.3%)was higher than that in the non-NEC group(22.6%)(p=0.011),and patients with PJA had longer parenteral nutrition time than patients without PJA(26.64±9.21 days vs 15.11±6.58 days,p<0.001).Conclusion PJA was more likely to be associated with concurrent NEC after surgery,which is a highly NEC-related risk factor inherent in JIA.

关键词： patients postoperative transfusion

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大语言模型在储能研究中的应用

储能科学与技术 2024年第9期13卷 2907-2919页

作者：袁誉杭高宇辰张俊东高岩斌王超珑陈翔张强清华大学化学工程系绿电化工中心北京100084

在碳达峰、碳中和的大背景下,储能科学作为一门信息密集、多学科交叉的研究领域,迫切需要新研究方法以应对其日益复杂的难题与挑战。随着人工智能技术的快速发展,大语言模型在文本处理、信息收集与整合、图片与视频生成等领域取得了巨... 详细信息

在碳达峰、碳中和的大背景下,储能科学作为一门信息密集、多学科交叉的研究领域,迫切需要新研究方法以应对其日益复杂的难题与挑战。随着人工智能技术的快速发展,大语言模型在文本处理、信息收集与整合、图片与视频生成等领域取得了巨大的成功,其应用也在逐渐延伸至自然科学研究领域,并在提升科研效率等方面展现出了巨大的潜力,有望助力储能科学应对未来挑战。本文首先以ChatGPT为例,回顾了人工智能和大语言模型领域的重大进展,从社会生活和科学研究两方面分析了这些进展所产生的影响,整理了国内重点的大语言模型;然后结合储能领域的具体案例介绍大语言模型的基本概念及原理,并从信息处理、信息生成和系统集成三个方面详细探讨大语言模型在储能研究中的应用,凸显这一全新研究方法的实际效果与发展前景;最后结合具体时代背景,指出大语言模型与储能交叉研究的挑战与未来发展方向,并对这一新领域做出总结和展望。

关键词：大语言模型人工智能储能技术二次电池

行波效应对近断层高低塔斜拉桥地震响应的影响

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交通科学与工程 2024年第4期40卷 76-84页

作者：赖珍康薛小强吕龙袁宇航成都理工大学环境与土木工程学院四川成都610059

以一座高低塔斜拉桥为研究对象,采用大质量法模拟非一致激励进行地震响应分析。研究不同纵向约束体系下考虑行波效应的脉冲型近断层高低塔斜拉桥的地震响应;探讨不同地震动类型与地震动传播方向下高低塔斜拉桥地震响应受行波效应的影响... 详细信息

以一座高低塔斜拉桥为研究对象,采用大质量法模拟非一致激励进行地震响应分析。研究不同纵向约束体系下考虑行波效应的脉冲型近断层高低塔斜拉桥的地震响应;探讨不同地震动类型与地震动传播方向下高低塔斜拉桥地震响应受行波效应的影响规律;分析不同脉冲周期地震动作用下斜拉桥地震响应随脉冲周期的变化规律。研究结果表明:相比于纵向阻尼体系与半漂浮体系斜拉桥,固结体系斜拉桥地震响应对视波速的变化更敏感;不同地震动输入方向下行波效应对斜拉桥地震响应影响规律有所不同;当视波速较小时,视波速对高塔和低塔内力差异影响较大;纵向阻尼体系斜拉桥地震响应随着脉冲周期的增大整体上呈先增大后减小的趋势。塔底内力随视波速的变化规律受脉冲周期的影响显著,当视波速较大,且脉冲周期与斜拉桥纵向一阶周期接近时,斜拉桥地震响应达到最大值。

关键词：近断层行波效应约束体系大质量法

Challenges and recent progress in thermal management with heat pipes for lithium-ion power batteries in electric vehicles

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Science China(Technological Sciences) 2021年第5期64卷 919-956页

作者： HUANG Yao TANG Yong yuan Wei FANG GuoYun YANG Yang ZHANG XiaoQing WU YaoPeng yuan yuhang WANG Chun LI JinGuang School of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou 510640China

Electric vehicles(EVs)are globally undergoing rapid developments,and have great potentials to replace the traditional vehicles based on fossil ***-type lithium-ion batteries(LIBs)have been widely used for EVs,owing to high power densities,good charge/discharge stability,and long cycle *** driving ranges and acceleration performances are gaining increasing concerns from customers,which depend highly on the power level of *** the increase in power outputs,rising heat generation significantly affects the battery performances,and in particular operation ***,the cold-start performance is still an intractable problem under extreme *** challenges put forward higher requirements for a dedicated battery thermal management system(BTMS).Compared to traditional BTMSs in EVs,the heat pipe-based BTMS has great application prospects owing to its compact structure,flexibility,low cost,and especially high thermal *** this topic,this review first introduces heat generation phenomena and temperature characteristics of *** abuse conditions and thermal runaway issues are described *** cooling and preheating methods for designing a BTMS are also *** emphasis on this review is put on the use of various heat pipes for BTMSs to enhance the thermal performances of *** lack of wide application in actual EVs,more efforts should be made to extend the use of heat pipes for constructing an energy-efficient,cost-effective,and reliable BTMS to improve the performances and safety of EVs.

关键词： lithium-ion power battery heat pipe battery thermal management system thermal performance thermal design thermal runaway

CuO nanoflowers/copper fiber felt integrated porous electrode for lithium-ion batteries

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Science China(Technological Sciences) 2020年第11期63卷 2423-2434页

作者： yuan Wei YE YinTong YANG Yang ZHANG XiaoQing PAN BaoYou PENG ZiMing WU MuLun QIU ZhiQiang WANG Chun yuan yuhang YAN ZhiGuo TANG Yong School of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou 510640China

The structure of current collectors has significant effects on the performance of a lithium-ion battery(LIB).In this study,we use copper fiber felts made by multi-tooth cutting and high-temperature solid-phase sintering as the current collector for *** integrated porous electrode based on CuO nanoflowers/copper fiber felt is developed for the *** suggest that the reversible capacity and cycle stability of this new anode are significantly improved,compared with the pristine bare-surface copper plate under the same condition of rate *** new anode structure based on the copper-fiber felt with a porosity of 60%exhibits a higher performance with an initial specific capacity of 609.5 mAh g^(-1)and retains 486.1 mAh g^(-1)after 200 cycles at a current density of 0.5 *** improved electrochemical performance of this electrode is attributed to its large surface area of CuO nanoflowers and porous structure of the copper fiber felt,due to enhanced contact between the active material of CuO nanoflowers and *** pore-rich structure makes the electrolyte easy to permeate into the electrode,shortens the diffusion path of Li^(+),reduces the internal resistance and alleviates the volume expansion of the active material during the insertion and desertion processes of Li^(+).

关键词： lithium-ion battery integrated electrode copper fiber felt CuO nanoflowers multi-tooth cutting

Electrolyte-gated SrCoO_(x) FET sensor for highly sensitive detecting pH in extreme alkalinity solution

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Nano Research 2024年第4期17卷 3079-3086页

作者： Han Zhou Gaocan Qi Wenbin Li yuhang Wang Zhihao yuan School of Materials Science and Engineering Tianjin Key Lab of Photoelectric Materials&Devicesand Key Laboratory of Display Materials and Photoelectric Devices(Ministry of Education)Tianjin University of TechnologyTianjin 300384China

The pH monitoring is significantly important in chemical industry,biological process,and pollution ***,it remains a great challenge to measure pH in extreme alkalinity ***,we employ an electrolyte-gated field-effect-transistor(FET)strategy using non-stoichiometric SrCoO_(x) with rich oxygen-vacancy defects as channel materials for detecting extreme *** corresponding channel can provide effective oxygen-ion-migration sites for reversible transformation of OH-↔O_(2)-+H^(+)driven by electric *** resultant electrolyte-gated FET sensor exhibits a sensitive linear response to high concentrations of alkaline solution,1–20 ***,the sensor has the ability to directly indicate the pH values ranging from 14.0 to 17.0 in consideration of ion-activity coefficient *** work offers a great possibility for directly detecting base concentration as well as pH values in extreme alkaline solutions.

关键词： field-effect-transistor(FET) pH sensor extreme alkaline solution SrCoO_(x) oxygen-ion migration

达芬奇机器人与胸腔镜外科治疗后纵隔肿物临床疗效比较的回顾性队列研究

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中国胸心血管外科临床杂志 2024年第5期31卷 695-701页

作者：王锋袁宇航王晨晗胡文滕何立杨文文孙硕张敏韩彪兰州大学第一临床医学院兰州730000 兰州大学第一医院胸外科兰州730000

目的比较机器人辅助胸腔镜手术(robot-assisted thoracoscopic surgery,RATS)与电视辅助胸腔镜手术(video-assisted thoracoscopic surgery,VATS)治疗后纵隔肿物的围手术期疗效,探讨RATS辅助后纵隔肿物外科治疗的优势。方法回顾性分析2019年1月—2023年1月在兰州大学第一医院胸外科同一医疗组行侧胸入路后纵隔肿物切除术患者的临床资料。按不同手术方式将患者分为RATS组和VATS组。比较两组患者的临床资料。结果本研究共纳入85例患者,RATS组39例,其中男14例、女25例,平均年龄(47.6±13.0)岁,VATS组46例,其中男14例、女32例,平均年龄(45.3±14.7)岁。所有患者均顺利完成手术。RATS组的住院总费用高于VATS组(P0.05)。两组患者均无围手术期死亡,无中转开胸及围手术期严重并发症。结论运用RATS辅助经侧胸入路行后纵隔肿物切除术安全可行,其近期疗效与侧胸单孔入路VATS相当,值得进一步研究其获益与性价比。

关键词：后纵隔肿瘤机器人辅助胸腔镜手术侧胸入路电视辅助胸腔镜手术

Ballistic performance of spaced multi-ply soft fabrics: Experimental and numerical investigation

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Defence Technology（防务技术） 2024年第4期34卷 143-155页

作者： Zhongwei Zhang Xiaoning Yang yuan Lin Ziming Xiong yuhang Xiang Yi Zhou Mingyang Wang State Key Laboratory of Explosion&Impact and Disaster Prevention&Mitigation Army Engineering University of PLANanjing 210007China School of Mechanical Engineering Nanjing University of Science&TechnologyNanjing 210007China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China Postdoctoral Station of Civil Engineering Army Engineering University of PLANanjing 210007China

It has been reported that the ply gap influences the ballistic resistance of spaced multi-ply fabric systems,but its working mechanism was not well-understood. This paper reports the experimental and numerical approaches and results of an investigation on the mechanisms that enable the improved ballistic performance of spaced multi-ply systems. Penetration tests were performed over a range of impact velocities ranging from 200 m/s to 400 m/s. The results confirmed that the ply gap is beneficial to the energy absorption capability of the systems. This is because the front plies tend to absorb more energy when they are not immediately constrained by the rear plies. During a ballistic event, the gap relieves the reflection of the compressive pulse, prolonging the projectile engagement time with the front plies;on the other hand, the rear plies become increasingly less active in dissipating energy as the gap *** the gap is sufficiently widened to avoid any interference between the plies before the failure of the front ply, the responses of the whole system no longer vary. It was also found that the ballistic performance of the spaced systems is influenced by ply thickness, impact velocity, and the stacking order of the ply gap.

关键词： Energy absorption capability Ply gap Ballistic performance The front ply The rear ply

Advances in methane emissions from agricultural sources:Part *** and mitigation

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Journal of Environmental Sciences 2024年第6期140卷 279-291页

作者： Xiaokun Wu Ying Zhang Yinghui Han Yagang Zhang yuhang Zhang Xiaodan Cheng Pei Zhong Xue yuan yuanxun Zhang Zhengqiang Li State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China Hebei Key Laboratory of Physics and Energy Technology North China Electric Power UniversityBaoding 071003China College of Resources and Environment University of Chinese Academy of SciencesBeijing 101408China Interdisciplinary Mathematics Institute University of South CarolinaColumbiaSC 29208United States Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China

Methane is one of the major greenhouse gases(GHGs)and agriculture is recognized as its primary *** accounting is a prerequisite for developing effective agriculture mitigation *** this review,methane accounting methods and research status for various agricultural emission source including rice fields,animal enteric fermentation and livestock and poultry manure management were overview,and the influencing factors of each emission source were analyzed and *** the same time,it analyzes the different research efforts involving agricultural methane accounting and makes recommendations based on the actual ***,mitigation strategies based on accounting results and actual situation are *** review aims to provide basic data and reference for agriculture-oriented countries and regions to actively participate in climate action and carry out effective methane emission mitigation.

关键词： Methane emission Agricultural sources Accounting methodology Mitigation Emission influencing factors