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免举宫腹腔镜与开腹宫颈癌根治术治疗早期宫颈癌的临床效果观察

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中外医药研究 2024年第19期3卷 72-74页

作者：罗成万晓丽张鹏许婷乐山市人民医院四川乐山614000

目的:对比免举宫腹腔镜与开腹宫颈癌根治术治疗早期宫颈癌的临床效果。方法:选取2019年1月—2022年3月乐山市人民医院收治的早期宫颈癌患者91例为研究对象,随机分成腹腔镜组(n=57)和开腹组(n=34)。腹腔镜组行免举宫腹腔镜宫颈癌根治术,... 详细信息

目的:对比免举宫腹腔镜与开腹宫颈癌根治术治疗早期宫颈癌的临床效果。方法:选取2019年1月—2022年3月乐山市人民医院收治的早期宫颈癌患者91例为研究对象,随机分成腹腔镜组(n=57)和开腹组(n=34)。腹腔镜组行免举宫腹腔镜宫颈癌根治术,开腹组行开腹宫颈癌根治术。比较两组围术期指标、并发症发生率。结果:腹腔镜组术中出血量少于开腹组,肛门排气时间、拔管时间及住院时间短于开腹组,手术时间长于开腹组(P0.05)。两组并发症发生率比较,差异无统计学意义(P>0.05)。结论:免举宫腹腔镜与开腹宫颈癌根治术的淋巴结清扫能力与安全性相当,免举宫腹腔镜宫颈癌根治术可减少术中出血量,加快术后肠道功能恢复,缩短住院时间,但手术时间更长,临床应根据患者具体情况合理选择手术方式。

关键词：宫颈癌宫颈癌根治术免举宫术腹腔镜

Machine learning assisted adsorption performance evaluation of biochar on heavy metal

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Frontiers of Environmental Science & Engineering 2024年第5期18卷 29-42页

作者： Qiannan Duan Pengwei Yan Yichen Feng Qianru wan xiaoli Zhu Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity College of Urban and Environmental SciencesNorthwest UniversityXi’an710127China Department of Environment Science Shaanxi Normal UniversityXi’an710062China

Heavy metals(HMs)represent pervasive and highly toxic environmental pollutants,known for their long latency periods and high toxicity levels,which pose significant challenges for their removal and ***,the removal of heavy metals from the environment is crucial to ensure the water *** materials,known for their intricate pore structures and abundant oxygen-containing functional groups,are frequently harnessed for their effectiveness in mitigating heavy metal ***,conventional tests for optimizing biochar synthesis and assessing their heavy metal adsorption capabilities can be both costly and *** address this challenge,this paper proposes a data-driven machine learning(ML)approach to identify the optimal biochar preparation and adsorption reaction conditions,with the ultimate goal of maximizing their adsorption *** utilizing a data set comprising 476 instances of heavy metal absorption by biochar,seven classical integrated models and one stacking model were trained to rapidly predict the efficiency of heavy metal adsorption by *** predictions were based on diverse physicochemical properties of biochar and the specific adsorption reaction *** results demonstrate that the stacking model,which integrates multiple algorithms,allows for training with fewer samples to achieve higher prediction accuracy and improved generalization ability.

关键词： Machine learning Biochar Heavy metal Adsorption efficiency

Substrate screening for superclean graphene growth using firstprinciples calculations

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Nano Research 2024年第4期17卷 2216-2222页

作者： Zhihao Li Xiucai Sun xiaoli Sun wan-Jian Yin Zhongfan Liu College of Energy Soochow Institute for Energy and Materials InnovationS(SIEMIS)and Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy TechnologiesSoochow UniversitySuzhou 215006China Graphene Basic Science Research Center Beijing Graphene Institute(BGI)Beijing 100095China Center for Nanochemistry Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Suppressing the formation of amorphous surface carbon and contaminants during the preparation of graphene by chemical vapor deposition remains an ongoing ***,we analyzed how substrate characteristics affect graphene quality by simulating margin extension,the nucleation process,and defect pegging configurations on mono-crystalline oriented metal substrates with the aim of enhancing graphene *** formation energy and nucleation potential,which are indirect substrate–graphene interaction features,were found to appropriately evaluate graphene *** crystallographic orientation of the metal substrate was discovered to be critical for producing superclean graphene.A low graphene defect density and high nucleation rate on the Cu(100)facet guarantee growth of high-quality graphene,especially in terms of suppressing the formation of amorphous *** addition,rapid kink growth and self-healing on the Cu(100)facet facilitate rapid graphene synthesis,which is also promoted by rapid kink splicing and margin self-repair on this *** study provides theoretical insight useful for the synthesis of superclean graphene.

关键词： superclean graphene defects nucleation metal substrates density functional theory calculations

基于红外光谱法的GIS设备SF_(6)气体泄漏识别研究

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电工技术 2024年第7期 146-148页

作者：曾武周鸿肖程威万晓丽陈治洁贵州电网有限责任公司六盘水供电局贵州六盘水553000

当前GIS设备SF_(6)气体泄漏识别的特征提取一般为独立形式,导致识别效率较低。为此进行基于红外光谱法的GIS设备SF_(6)气体泄漏识别研究。根据当前设备的需求及标准,首先进行气体泄漏异常数据的采集,并提取泄漏信号的共性特征,以此来提... 详细信息

当前GIS设备SF_(6)气体泄漏识别的特征提取一般为独立形式,导致识别效率较低。为此进行基于红外光谱法的GIS设备SF_(6)气体泄漏识别研究。根据当前设备的需求及标准,首先进行气体泄漏异常数据的采集,并提取泄漏信号的共性特征,以此来提高识别的效率;然后构建红外光谱SF_(6)气体泄漏识别模型,并采用多维修正的方式来强化识别结果。测试结果表明,针对随机选定的4台GIS设备,经过3个周期的测试,最终得出的泄漏位置识别数均可达到15次以上,说明在红外光谱法的辅助下,设计的GIS设备SF_(6)气体泄漏识别方法更加灵活且针对性强,具有实际的应用价值与创新意义。

关键词：红外光谱法 GIS设备 SF_(6)气体泄漏气体识别设备辅助

Integration of morphology and electronic structure modulation on cobalt phosphide nanosheets to boost photocatalytic hydrogen evolution from ammonia borane hydrolysis

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Green Energy & Environment 2024年第2期9卷 333-343页

作者： Chao wan Yu Liang Liu Zhou Jindou Huang Jiapei wang Fengqiu Chen xiaoli Zhan Dang-guo Cheng School of Chemistry and Chemical Engineering Anhui Province Key Laboratory of Coal Clean Conversion and High Valued UtilizationAnhui University of TechnologyMa'anshan243002China College of Chemical and Biological Engineering Zhejiang UniversityZhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology38 Zheda RoadHangzhou310027China Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission Key Laboratory of Photosensitive Materials&Devices of Liaoning ProvinceSchool of Physics and Materials EngineeringDalian Nationalities University 18 Liaohe West RoadDalian116600China Institute of Zhejiang University-Quzhou 78 Jiuhua Boulevard NorthQuzhou324000China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou University213164China

The controllable and safe hydrogen storage technologies are widely recognized as the main bottleneck for the accomplishment of sustainable hydrogen *** borane(AB)has regarded as a competitive candidate for chemical hydrogen ***,developing efficient yet high-performance catalysts towards hydrogen evolution from AB hydrolysis remains an enormous ***,cobalt phosphide nanosheets are synthesized by a facile salt-assisted along with low-temperature phosphidation strategy for simultaneously modulating its morphology and electronic structure,and function as hydrogen evolution ***,the Co_(2)P nanosheets display extraordinary performance with a record high turnover frequency of 44.9 min^(-1),outperforming most of the noble-metal-free catalysts reported to *** remarkable performance is attributed to its desired nanosheets structure,featuring with high specific surface area,abundant exposed active sites,and short charge diffusion *** findings provide a novel strategy for regulating metal phosphides with desired phase structure and morphology for energy-related applications and beyond.

关键词： Ammonia borane Hydrogen generation Hydrolysis Cobalt phosphide nanosheets Photocatalysis

Understanding the combustion behavior of electric bicycle batteries and unveiling its relationship with fire extinguishing

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Journal of Energy Chemistry 2024年第4期91卷 609-618页

作者： Zhanglong Yu Xueling Shen Ran Xu Zheng wang Zengming wan Mingyang Chen Yi Cui Yanyan Fang xiaoli Ma China Automotive Battery Research Institute Co. Ltd.Beijing 101407China China Grinm Group Co. Ltd.Beijing 100088China Ministry of Industry and Information Technology Equipment Industry Development CenterBeijing 100846China Hefei Guoxuan High-tech Power energy Co. Ltd.Hefei 230000AnhuiChina

In this study,a detailed analysis of the combustion behaviors of the lithium iron phosphate(LFP)and lithium manganese oxide(LMO)batteries used in electric bicycles was *** research included quantitative measurements of the combustion duration,flame height,combustion temperature,heat release rate,and total heat *** results indicated that LMO batteries exhibited higher combustion temperatures of 600–700°C,flame heights of 70–75 cm,a significantly higher heat release rate of40.1 k W(12 Ah),and a total heat release of 1.04 MJ(12 Ah)compared to LFP batteries with the same *** on these experimental results,a normalized total heat release(NORTHR)parameter was proposed,demonstrating good universality for batteries with different *** this parameter,quantitative calculations and optimization of the extinguishing agent dosage were conducted for fires involving these two types of batteries,and the method was validated by extinguishing fires for these two types of battery packs with water-based extinguishing fluids.

关键词： Combustion behavior Electric bicycle Lithium-ion battery Fire extinguishing Normalized total heat release

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采食前后蛋鸡饲粮中营养物质的变化分析

家禽科学 2024年第6期46卷 1-5页

作者：成文韬陈金朋刘文沛陈波马义国王万平万晓莉扬州大学动物科学与技术学院江苏扬州225009 金湖县永祥种鸡有限公司江苏淮安211600

试验旨在对采食前后蛋鸡饲粮中营养物质的变化进行分析,选取100只60周龄海兰褐蛋鸡随机分为5个重复,每个重复20只。饲料形式为粉料,喂料时(采食前)和采食20 min后(采食后)分别收集5个重复的饲料样品。结果表明:1)在常规养分方面,采食20... 详细信息

试验旨在对采食前后蛋鸡饲粮中营养物质的变化进行分析,选取100只60周龄海兰褐蛋鸡随机分为5个重复,每个重复20只。饲料形式为粉料,喂料时(采食前)和采食20 min后(采食后)分别收集5个重复的饲料样品。结果表明:1)在常规养分方面,采食20min后粗灰分含量极显著高于采食前(P<0.01);而粗脂肪含量显著低于采食前(P<0.05);2)在矿物元素方面,采食20 min后硒含量极显著高于采食前(P<0.01)。由此可见,蛋鸡采食时会优先食用大颗粒饲料从而导致饲粮中常规养分和矿物元素的改变。

关键词：蛋鸡采食行为常规养分矿物元素

Crustal S-wave velocity structure across the northeastern South China Sea continental margin: implications for lithology and mantle exhumation

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Earth and Planetary Physics 2019年第4期3卷 314-329页

作者： WenAi Hou Chun-Feng Li xiaoli wan MingHui Zhao XueLin Qiu Institute of Marine Geology and Resources Zhejiang University Zhoushan Zhejiang 316021 China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China

The northeastern margin of the South China Sea (SCS), developed from continental rifting and breakup, is usually thought of as a non-volcanic margin. However, post-spreading volcanism is massive and lower crustal high-velocity anomalies are widespread, which complicate the nature of the margin here. To better understand crustal seismic velocities, lithology, and geophysical properties, we present an S-wave velocity (VS) model and a VP/VS model for the northeastern margin by using an existing P-wave velocity (VP) model as the starting model for 2-D kinematic S-wave forward ray tracing. The Mesozoic sedimentary sequence has lower VP/VS ratios than the Cenozoic sequence;in between is a main interface of P-S conversion. Two isolated high-velocity zones (HVZ) are found in the lower crust of the continental slope, showing S-wave velocities of 4.0–4.2 km/s and VP/VS ratios of 1.73–1.78. These values indicate a mafic composition, most likely of amphibolite facies. Also, a VP/VS versus VP plot indicates a magnesium-rich gabbro facies from post-spreading mantle melting at temperatures higher than normal. A third high-velocity zone (VP : 7.0–7.8 km/s;VP/VS: 1.85–1.96), 70-km wide and 4-km thick in the continent-ocean transition zone, is most likely to be a consequence of serpentinization of upwelled upper mantle. Seismic velocity structures and also gravity anomalies indicate that mantle upwelling/ serpentinization could be the most severe in the northeasternmost continent-ocean boundary of the SCS. Empirical relationships between seismic velocity and degree of serpentinization suggest that serpentinite content decreases with depth, from 43% in the lower crust to 37% into the mantle.

关键词： South China Sea continental margin crustal structure converted S-wave VP/VS ratio lithology serpentinization

Research Progress of Microplastics Pollution in Environment

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Asian Agricultural Research 2024年第4期16卷 19-22页

作者： Peng wan Zhen ZHAO Guoyan WEN Yunshuang FU Cuizhi LI xiaoli WU Inner Mongolia Yili Industrial Group Co. Ltd.Hohhot 010010China

Microplastics pollution has become one of the focuses of global environmental science *** include micro plastic particles and nano-plastic particles,which come from the decomposition of plastic products,the release of microfibers and the industrial process of plastic *** distribution of microplastics in water,soil and atmosphere is summarized,and the widespread existence of microplastics in different environmental media is *** paper also summarizes the potential impact of microplastics on ecosystems and organisms,and pays attention to the transmission and accumulation of microplastics in the food chain,as well as its potential threat to human ***,the paper discusses the methods and technologies of microplastics treatment and monitoring at present,and puts forward the direction of further research on microplastics pollution in order to formulate more effective management and mitigation strategies.

关键词： Microplastics Environment Pollution