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小儿达芬奇机器人手术中转原因分析及预防策略:单中心581例

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中华小儿外科杂志 2024年第2期45卷 120-125页

作者：秦鑫段栩飞闫学强卡红强杨俊皮名安王军鲁巍华中科技大学同济医学院附属武汉儿童医院普外科武汉430016

目的探讨小儿达芬奇机器人手术中转原因并提出预防策略。方法收集华中科技大学同济医学院附属武汉儿童医院2020年10月至2022年12月581例单一疾病达芬奇机器人手术患儿的临床资料,其中男325例,女256例;年龄为(4.00±3.52)岁,年龄范围为1 ... 详细信息

目的探讨小儿达芬奇机器人手术中转原因并提出预防策略。方法收集华中科技大学同济医学院附属武汉儿童医院2020年10月至2022年12月581例单一疾病达芬奇机器人手术患儿的临床资料,其中男325例,女256例;年龄为(4.00±3.52)岁,年龄范围为1 d至16岁10个月,其中新生儿11例,婴儿145例,幼儿132例,学龄前期141例,学龄期137例,青春期15例;身高为(97.65±28.11)cm,范围是45.00~175.00 cm;体重为(17.11±11.22)kg,体重范围是2.00~67.00 kg。根据患儿的年龄和病变部位等情况选择戳孔布局为直线型布局、扇形布局或者三角形布局,分析比较手术时间,术中出血量,中转率等。计数资料进行χ2检验,计量资料进行t检验。结果581例患儿无围手术期死亡病例,手术时间为(186.76±94.81)min,中位术中出血量为5(5,10)ml,范围是1~300 ml,其中7例术中中转开放,中转原因包括侵犯周围重要组织器官3例(分别为肋骨、降主动脉、气管),操作空间狭小2例,术中出血2例。患儿各年龄段中转率差异无统计学意义(χ2=1.18,P=0.947)。结论小儿达芬奇机器人手术中转最常见原因为侵犯周围重要组织器官、操作空间狭小及术中出血,术前准确评估患儿自身空间、病变的范围、与周围组织关系、血供来源及是否合并有感染是降低小儿达芬奇机器人手术中转率的关键。

关键词：机器人手术中转开腹手术小儿外科

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基于传力路径的接骨板结构拓扑优化设计

医用生物力学 2024年第3期39卷 442-449页

作者：蔡俊丁晓红段朋云熊敏张横上海理工大学机械工程学院上海200093

目的提出一种相对于传统拓扑优化方法能有效降低应力集中,并进一步提高断骨愈合效果的接骨板拓扑优化设计方法。方法依据接骨板在断骨-接骨板系统中的载荷约束条件,采用改进的基于传力路径的拓扑优化方法对接骨板结构进行优化设计。... 详细信息

目的提出一种相对于传统拓扑优化方法能有效降低应力集中,并进一步提高断骨愈合效果的接骨板拓扑优化设计方法。方法依据接骨板在断骨-接骨板系统中的载荷约束条件,采用改进的基于传力路径的拓扑优化方法对接骨板结构进行优化设计。随后采用基于偏应变的骨再生模拟模型,对胫骨骨干横向骨折情况进行骨再生模拟,依据骨再生过程数据对优化接骨板的受力状态、固定稳定性及愈合性能进行评估。结果使用基于传力路径优化方法的优化接骨板在体积分数f=0.55、0.65时,接骨板最大应力分别为55.68、42.23 MPa,相较于传统拓扑优化方法优化接骨板分别降低32.96%、29.95%;骨愈合过程后骨痂平均弹性模量分别为1 439.47、1 355.71 MPa,相较于传统接骨板分别提升145.86%、131.06%。结论提出的改进基于传力路径的拓扑优化方法,可以用于接骨板结构优化设计,优化后接骨板相比传统拓扑优化方法优化接骨板受力更加均匀,使用安全性更高,骨愈合性能相较传统接骨板有明显提升。研究结果为骨折内固定植入物的优化设计提供了一种新思路和方法。

关键词：传力路径接骨板拓扑优化结构设计

Effect of solar radiation on human thermal sensation and physiological parameters in a convection–radiation air conditioning environment

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Building Simulation 2024年第8期17卷 1359-1377页

作者： Guanyu Li Dong Liu Anjie Hu Qidong Yan Lina Ma Liu Tang Xiaozhou Wu jun Wang Zhenyu Wang School of Civil Engineering and Architecture Southwest University of Science and TechnologyMianyang 621010China Sichuan Province Engineering technology Research Center of Healthy Human Settlement Chengdu 610065China Sichuan university Engineering Design&Research Institute Co.Ltd Chengdu 610065China School of Civil Engineering Dalian University of TechnologyDalian 116081China College of Architecture and Environment Sichuan UniversityChengdu 610065China School of Environment and Resources Southwest University of Science and TechnologyMianyang 621010China

This study focused on the effect of glass structures of modern architecture on the indoor thermal environment during *** particular,this study examined how solar radiation significantly altered people’s thermal *** tests on convection–radiation air conditioning systems were conducted,encompassing 12 different scenarios,including diverse indoor open areas,terminal forms,and levels of solar *** tests aimed to explore the physiological and psychological responses of the human body to solar radiation penetrating through windows into the inner *** the experiments,the participants’subjective thermal sensations and thermal comfort were recorded,along with continuous monitoring of their physiological and environmental *** showed that solar radiation significantly increased local skin temperature,with a maximum rise of 2.15℃.Operative temperature is a reliable indicator of human skin temperature and thermal sensation vote(TSV).This study established two models that could predict the skin temperature of individuals indoors through operative temperature under conditions without or with solar radiation,and identified sensitive ranges of operative temperature for both models,to be specific,26.32℃to 28.43℃and 28.51℃to 34.11℃,***,this study established the relationship between skin temperature and TSV under conditions with and without solar *** results indicate that solar radiation enhances the human body’s adaptability to indoor environmental parameters;a convection–radiation system(FC+RF)could be used to optimize indoor thermal control under solar radiation,achieving more stable environmental temperatures and improved indoor comfort.

关键词： system modeling solar radiation mean skin temperature thermal comfort terminal form irradiation area

Effect of solute Ce,Mn,and Si on mechanical properties of silicon steel:insights from DFT calculations

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Journal of Iron and Steel Research International 2024年第3期31卷 700-709页

作者： Xiang-jun Liu Ji-chun Yang Hui-ping Ren Xiao-bin Jia Ming-yi Zhang Chang-qiao Yang School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resource Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina inner mongolia North Heavy Industries Group Co. Ltd.Baotou 014010Inner MongoliaChina inner mongolia Metal Material Research Institute Baotou 014010Inner MongoliaChina

The influence of solute Ce,Mn,and Si on the mechanical properties of silicon steel was investigated by first-principles ***,Mn,and Si can all be solubilized in Fe *** significantly reduces the incompressibility and rigidity of the system but also significantly improves the toughness and *** effect of Mn on mechanical properties of the system is not *** has a significant effect on the improvement in incompressibility and rigidity but a limited effect on the improvement in toughness and *** metallic bond strength of Fe-Ce,Fe-Mn,and Fe-Si doped systems is weaker than that of the pure Fe system,which can be used to explain the reduction in the incompressibility and rigidity of these doped *** relatively high electron cloud density in the doped system may be responsible for the increase in toughness.

关键词： Silicon steel Rare earth First-principles calculation Elastic modulus Electronic structure

Greenhouse gas emissions from Daihai Lake,china:Should eutrophication and salinity promote carbon emission dynamics?

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Journal of Environmental sciences 2024年第1期135卷 407-423页

作者： Xiangwei Li Ruihong Yu jun Wang Heyang Sun Xinyu Liu Xiaohui Ren Shuai Zhuang Zhiwei Guo Xixi Lu inner mongolia Key Laboratory of River and Lake Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot 010070China Key Laboratory of mongolian Plateau Ecology and Resource Utilization Ministry of EducationHohhot 010070China Autonomous Region Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the inner mongolia Reaches of the Yellow River Hohhot 010018China Department of Geography National University of Singapore117570Singapore

Greenhouse gases(GHGs)emitted or absorbed by lakes are an important component of the global carbon ***,few studies have focused on the GHG dynamics of eutrophic saline lakes,thus preventing a comprehensive understanding of the carbon ***,we conducted four sampling analyses using a floating chamber in Daihai Lake,a eutrophication saline lake in inner mongolia Autonomous Region,china,to explore its carbon dioxide(CO_(2))and methane(CH_(4))*** mean CO_(2)emission flux(FCO_(2))and CH_(4)emission flux(FCH_(4))were 17.54±14.54 mmol/m^(2)/day and 0.50±0.50 mmol/m^(2)/day,*** results indicated that Daihai Lake was a source of CO_(2)and CH_(4),and GHG emissions exhibited temporal *** mean CO_(2)partial pressure(p CO_(2))and CH_(4)partial pressure(p CH_(4))were 561.35±109.59μatm and 17.02±13.45μatm,which were supersaturated relative to the *** regression and correlation analysis showed that the main influencing factors of p CO_(2)were wind speed,dissolved oxygen(DO),total nitrogen(TN)and Chlorophyll a(Chl.a),whereas the main influencing factors of p CH_(4)were water temperature(WT),Chl.a,nitrate nitrogen(NO_(3)^(-)-N),TN,dissolved organic carbon(DOC)and water *** regulated carbon mineralization and organic matter decomposition,and it was an important influencing factor of p CO_(2)and p CH_(4).Additionally,the trophic level index(TLI)significantly increased p CH_(4).Our study elucidated that salinity and eutrophication play an important role in the dynamic changes of GHG ***,research on eutrophic saline lakes needs to be strengthened.

关键词： Eutrophication Salinity Greenhouse gas emissions Inland lake inner mongolia Autonomous Region

Single-cell omics:experimental workflow,data analyses and applications

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science china Life sciences 2024年

作者： Fengying Sun Haoyan Li Dongqing Sun Shaliu Fu Lei Gu Xin Shao Qinqin Wang Xin Dong Bin duan Feiyang Xing jun Wu Minmin Xiao Fangqing Zhao Jing-Dong J.Han Qi Liu Xiaohui Fan Chen Li Chenfei Wang Tieliu Shi Center for Bioinformatics and Computational Biology Shanghai Key Laboratory of Regulatory Biology the Institute of Biomedical Sciences and School of Life Sciences East China Normal University Beijing Institutes of Life science Chinese Academy of Sciences Peking-Tsinghua Center for Life sciences Academy for Advanced Interdisciplinary Studies Center for Quantitative Biology (CQB) Peking University Zhejiang Key Laboratory of Precision Diagnosis and Therapy for Major Gynecological Diseases Women’s Hospital Zhejiang University School of Medicine Key Laboratory of Advanced Theory and Application in Statistics and Data science-MOE School of Statistics East China Normal University Shanghai 200062 China Department of Clinical Laboratory the Affiliated Wuhu Hospital of East China Normal University (The Second People's Hospital of Wuhu City) Pharmaceutical Informatics Institute College of Pharmaceutical Sciences Zhejiang University Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration (Tongji university) Ministry of Education Orthopaedic Department Tongji Hospital Bioinformatics Department School of Life Sciences and Technology Tongji University Frontier science Center for Stem Cells School of Life Sciences and Technology Tongji University Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine Shanghai East Hospital Bioinformatics Department School of Life Sciences and Technology Tongji University Research Institute of Intelligent Computing Zhejiang Lab Shanghai Research Institute for Intelligent Autonomous Systems Center for Single-cell Omics School of Public Health Shanghai Jiao Tong University School of Medicine National Key Laboratory of Chinese Medicine Modernization Innovation Center of Yangtze River Delta Zhejiang University

Cells are the fundamental units of biological systems and exhibit unique development trajectories and molecular features. Our exploration of how the genomes orchestrate the formation and maintenance of each cell, and control the cellular phenotypes of various organismsis, is both captivating and intricate. Since the inception of the first single-cell RNA technology, technologies related to single-cell sequencing have experienced rapid advancements in recent years. These technologies have expanded horizontally to include single-cell genome, epigenome,proteome, and metabolome, while vertically, they have progressed to integrate multiple omics data and incorporate additional information such as spatial scRNA-seq and CRISPR screening. Single-cell omics represent a groundbreaking advancement in the biomedical field,offering profound insights into the understanding of complex diseases, including cancers. Here, we comprehensively summarize recent advances in single-cell omics technologies, with a specific focus on the methodology section. This overview aims to guide researchers in selecting appropriate methods for single-cell sequencing and related data analysis.

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双馈风力发电机组变流器控制参数分步辨识方法

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太阳能学报 2024年第5期45卷 18-26页

作者：戚正浩段建东高桐邓俊张阳陈杰西安理工大学电气工程学院西安710048 国网陕西省电力有限公司电力科学研究院西安710100

该文通过构建双馈风力发电机组转子侧与网侧控制系统包含8个PI控制器待辨识参数的内、外环传递函数作为参数辨识模型,基于此提出内外环施加不同扰动源的激励方法和基于改进灰狼算法的分步参数辨识方法。为避免内外环PI控制器之间的级联... 详细信息

该文通过构建双馈风力发电机组转子侧与网侧控制系统包含8个PI控制器待辨识参数的内、外环传递函数作为参数辨识模型,基于此提出内外环施加不同扰动源的激励方法和基于改进灰狼算法的分步参数辨识方法。为避免内外环PI控制器之间的级联问题,特别选出3个合理的内外环观测量。最后,建立双馈风力发电机组仿真模型,测试所提分步辨识方法可行性,对比扰动下实际模型与辨识模型的观测量输出,证明辨识方法的准确性。

关键词：变流器参数辨识传递函数双馈风力发电机组灰狼算法

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A review of the catalytic preparation of mesophase pitch

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新型炭材料（中英文） 2024年第4期39卷 583-610页

作者： MA Zi-hui YANG Tao SONG Yan CHEN Wen-sheng duan Chun-feng SONG Huai-he TIAN Xiao-dong GONG Xiang-jie LIU Zheng-yang LIU Zhan-jun CAS Key Laboratory for Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China Center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China College of Material science and Engineering Beijing University of Chemical TechnologyBeijing 100029China

Because of its high purity and excellent orientation, mesophase pitch is a superior precursor for high-performance car-bon materials. However, the preparation of top-notch mesophase pitch faces challenges. Catalytic polycondensation at low temperat-ures is more favorable for synthesizing mesophase pitch, because it circumvents the high-temperature free radical reaction of other thermal polycondensation approaches. The reaction is gentle and can be easily controlled. It has the potential to significantly im-prove the yield of mesophase pitch and easily introduce naphthenic characteristics into the molecules, catalytic polycondensation is therefore a preferred method of synthesizing highly spinnable mesophase pitch. This review provides a synopsis of the selective pre-treatment of the raw materials to prepare different mesophase pitches, and explains the reaction mechanism and associated research advances for different catalytic systems in recent years. Finally, how to manufacture high-quality mesophase pitch by using a cata-lyst-promoter system is summarized and proposed, which may provide a theoretical basis for the future design of high-quality pitch molecules.

关键词： Mesophase pitch Catalytic polycondensation Lewis-acid Brønsted acid Catalyst-promoter system

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噬菌体在重症医学科中的应用与前景展望

中国生物工程杂志 2024年第8期44卷 148-154页

作者：任德志李函洋徐亚奇童贻刚段军中日友好医院(中日友好临床医学研究所)北京协和医学院中国医学科学院北京100029 北京化工大学生命与科学技术学院北京100029 中日友好医院重症医学科北京100029

目前重症医学科超级细菌产生逐年增加,给院内感染防控和公共卫生带来许多新挑战。噬菌体是一种能特异性感染并裂解细菌的病毒,为重症多重耐药菌感染的治疗带来新希望。总结了利用噬菌体进行院内环境消杀与监控、治疗重症感染的案例,并... 详细信息

目前重症医学科超级细菌产生逐年增加,给院内感染防控和公共卫生带来许多新挑战。噬菌体是一种能特异性感染并裂解细菌的病毒,为重症多重耐药菌感染的治疗带来新希望。总结了利用噬菌体进行院内环境消杀与监控、治疗重症感染的案例,并分析了在重症医学科中应用噬菌体的问题与可能对策,为噬菌体在重症医学科中的应用研究提供新思路。

关键词：噬菌体治疗重症医学医院感染多重耐药菌