检索结果-南通市图书馆

A_(2)B_(7)-type La-Mg-Ni alloys prepared by Mg thermal diffusion for improved hydrogen storage performance

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第7期43卷 3260-3272页

作者： Yong-Xi Zhang Guan-Jiu Wu Jing Gu hong-xing Kang Yuan Li Di Zhou Wen-Feng Wang Lu Zhang Shu-Min Han Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China Department of Chemistry and Biochemistry San Diego State UniversitySan DiegoCA92182-1030USA State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China

A novel approach based on thermal diffusion was used to achieve controllable Mg content in A_(2)B_(7)-type La-Mg-Ni-based *** formation mechanism of the A_(2)B_(7)-type phase as a result of the thermal diffusion process and the effect of Mg content on hydrogen storage performance were investigated.X-ray diffraction(XRD)patterns and Rietveld refinement results showed that increased Mg transformed the LaNi_(5)phase in the La_(0.74)Sm_(0.03)Y_(0.23)Ni_(4.32)Al_(0.04)precursor alloy into a superlattice *** electron microscopy(SEM)images showed that Mg was evenly distributed in the alloy *** in the superlattice significantly inhibited the phase decomposition of the superlattice structure during the hydrogen absorption/desorption *** A_(2)B_(7)-type La_(0.57)Sm_(0.02)Y_(0.18)Mg_(0.23)Ni_(3.38)Al_(0.03)alloy composed of Gd_(2)Co_(7)and Ce_(2)Ni_(7)phases was successfully *** pressure-composition isotherm profiles showed that the alloy had a hydrogen storage capacity as high as 1.73 wt%,with good cycling *** 50 cycles of hydrogen absorption/desorption,the alloy retained a hydrogen storage capacity of 1.45 wt%,with a capacity retention rate of up to 84.28%.The Mg thermal diffusion process thus provides a new approach for the controlled preparation of La-Mg-Ni-based alloys.

关键词： La-Mg-Ni-based hydrogen storage alloy A_(2)B_(7)-type superlattice alloy Mg thermal diffusion process Phase transformation Hydrogen storage property

Laparoscopic left hemihepatectomy guided by indocyanine green fluorescence: A cranial-dorsal approach

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第2期16卷 409-418页

作者： xing-Ru Wang Xiao-Ju Li Dan-Dan Wan Qian Zhang Tian-Xi Liu Zong-Wen Shen hong-xing Tong Yan Li Jian-Wei Li Institute of Hepatobiliary Surgery First Affiliated HospitalArmy Medical UniversityChongqing 400038China Department of Hepatobiliary Surgery Qujing Central Hospital of Yunnan Regional Medical CenterQujing 655000Yunnan ProvinceChina School of Clinical Medicine Qujing Medical CollegeQujing 655000Yunnan ProvinceChina

BACKGROUND Advancements in laparoscopic technology and a deeper understanding of intra-hepatic anatomy have led to the establishment of more precise laparoscopic hepatectomy(LH)*** indocyanine green(ICG)fluorescence navi-gation technique has emerged as the most effective method for identifying hepatic regions,potentially overcoming the limitations of *** laparoscopic left hemihepatectomy(LLH)is a standardized procedure,there is a need for innova-tive strategies to enhance its *** anatomical markers,surgical skills,and ICG staining *** Thirty-seven patients who underwent ICG fluorescence-guided LLH at Qujing Second People's Hospital between January 2019 and February 2022 were retrospectively *** cranial-dorsal approach was performed which involves dissecting the left hepatic vein cephalad,isolating the Arantius ligament,exposing the middle hepatic vein,and dissecting the parenchyma from the dorsal to the foot in order to complete the anatomical *** surgical methods,as well as intra-and post-surgical data,were recorded and *** hospital’s Medical Ethics Committee approved this study(Ethical review:2022-019-01).RESULTS Intraoperative blood loss during LLH was 335.68±99.869 mL and the rates of transfusion and conversion to laparotomy were 13.5%and 0%,*** overall incidence of complications throughout the follow-up(median of 18 months;range 1-36 months)was 21.6%.No mortality or severe complications(level IV)were *** LLH has the potential to become a novel,standardized approach that can effectively,safely,and simply expose the middle hepatic vein and meet the requirements of precision surgery.

关键词： Laparoscopic left hemihepatectomy Indocyanine green Cranial-dorsal approach Laparoscopic hepatectomy Arantius ligament Glissonean pedicle

Effect of continuous nursing on rehabilitation of older patients with joint replacement after discharge

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第21期12卷 4558-4565页

作者： Xiao-Yan Qi hong-Yan Zhou Yu-hong xing Department of Orthopaedics The Third Hospital of ShijiazhuangShijiazhuang 050011Hebei ProvinceChina

BACKGROUND Joint replacement is a common treatment for older patients with high incidences of hip joint ***,postoperative recovery is slow and complications are common,which reduces surgical ***,patients require long-term,high-quality,and effective nursing interventions to promote *** of care has been used successfully in other diseases;however,little research has been conducted on older patients who have undergone hip *** To explore the clinical effect of continuous nursing on rehabilitation after discharge of older individuals who have undergone joint *** A retrospective analysis was performed on the clinical data of 113 elderly *** receiving routine nursing were included in the convention group(n=60),and those receiving continuous nursing,according to various methods,were included in the continuation group(n=53).Harris score,short form 36(SF-36)score,complication rate,and readmission rate were compared between the convention and continuation *** After discharge,Harris and SF-36 scores of the continuation group were higher than those of the convention *** Harris and SF-36 scores of the two groups showed an increasing trend with time,and there was an interaction effect between group and time(Harris score:F_(intergroup effect)=376.500,F_(time effect)=20.090,Finteraction effect=4.824;SF-36 score:F_(intergroup effect)=236.200,Ftime effect=16.710,Finteraction effect=5.584;all P<0.05).Furthermore,the total complication and readmission rates in the continuation group were lower(P<0.05).CONCLUSION Continuous nursing could significantly improve hip function and quality of life in older patients after joint replacement and reduce the incidence of complications and readmission rates.

关键词： Continuous nursing Discharge Older adults Joint replacement Rehabilitation Effect

碳达峰背景下江苏省能源需求影响因素及预测分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

数学的实践与认识 2024年第2期54卷 59-73页

作者：邢红南通师范高等专科学校江苏如皋226500

科学预测能源需求量对于控制能源消费具有重要的现实意义.基于扩展的STIRPAT模型定量分析江苏省能源需求与人口规模、城市化、经济发展水平、能源强度、产业结构以及能源政策等因素之间的关系,并基于不同情境预测2021-2035年江苏省能源... 详细信息

科学预测能源需求量对于控制能源消费具有重要的现实意义.基于扩展的STIRPAT模型定量分析江苏省能源需求与人口规模、城市化、经济发展水平、能源强度、产业结构以及能源政策等因素之间的关系,并基于不同情境预测2021-2035年江苏省能源需求量.研究结果表明:1)江苏省节能政策大体经过三个演变阶段:即1995-2003相对平稳阶段、2004-2015波动上升阶段、2016-2020年高位平稳阶段;2)人口规模对江苏省能源需求的影响最大,人口规模每增加1%,能源需求量将增加3.1566%;城镇化、人均GDP、能源强度、第二产业占比每增加1%,能源需求量将分别增加0.2207%、0.2766%、0.4157%、0.2568%;能源政策影响相对较弱,能源政策得分每增加1%,能源需求量将减少0.1653%;3)在31种情境中江苏省能源需求量都呈现递增趋势,没有出现拐点;2021年-2035年,江苏省能源需求量约为4.2×10^(8)-5.53×10^(8)tce.因此江苏省必须采取营造节能降碳的氛围、转变经济增长方式、优化产业结构与能源结构以及完善相关政策法规等措施以实现既定的控制能源消费量目标.

关键词：能源需求 STIRPAT模型影响因素岭回归江苏省

New sustainable polymers with on-demand depolymerization property

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第9期67卷 2803-2841页

作者： Yangyang Sun Zesheng An Yanshan Gao Rongrong Hu Ye Liu Hua Lu Xiao-Bing Lu Xuan Pang Anjun Qin Yong Shen Youhua Tao Yu-Zhong Wang Junpeng Wang Gang Wu Guang-Peng Wu Tie-Qi Xu xing-hong Zhang Yuetao Zhang Zhenbiao Zhang Jian-Bo Zhu Miao hong Zhibo Li State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China University of TechnologyGuangzhou 510640China State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart MaterialsDalian University of TechnologyDalian 116024China Beijing National Laboratory for Molecular Sciences Center for Soft Matter Science and EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)College of ChemistryState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610064China School of Polymer Science and Polymer Engineering the University of AkronAkronOH 44325USA MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationSuzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

To combat the crisis of today's synthetic polymers arising from unsustainable production and disposal,it is essential for the synthetic polymer community to reshape the current polymer industry with sustainable *** an emerging class of sustainable polymers,the development of chemically depolymerizable polymers(CDPs),which can undergo closed-loop depolymerization/repolymerization cycles to reproduce virgin polymers without the loss of properties from recovered monomers,offers an ideal solution to preserve finite natural resources,provides a feasible solution to the end-of-life issue of polymer waste,and thereby establishes a circular materials ***,two grand key challenges have been encountered in the establishment of practically useful CDPs:how to balance polymerization and depolymerization ability and how to unify conflicted depolymerizability and physical ***,this critical review article presents our vision for summarizing feasible strategies to overcome the above two significant challenges and the design principles for constructing an ideal CDP by highlighting selected major progress made in this rapidly expanding field.

关键词： chemically depolymerizable polymers sustainable polymers depolymerization monomer recovery degradation plastics

Epigenetic regulatory differentiation of hematopoietic stem cells to the red lineage

在线全文

学校读者我要写书评

暂无评论

Reproductive and Developmental Medicine 2024年第3期8卷 169-177页

作者： hong-xing Li Yi-hong Chai Xiao-hong Sun Xiao-Xia He Ya-Ming Xi The First School of Clinical Medicine Lanzhou UniversityLanzhou 730000China Key Laboratory for Reproductive Medicine and Embryo of Gansu Province Lanzhou 730000China Department of Hematology The First Hospital of Lanzhou UniversityLanzhou 730000China

The differentiation process from hematopoietic stem cells(HSCs)to mature red blood cells(RBCs)is characterized by remarkable precision and is tightly controlled from the initial lineage commitment to eventual terminal *** is the dynamic journey of HSCs through various functional and phenotypic *** physiological course of erythrogenesis is intricately linked to significant changes in chromatin accessibility,necessitating precise coordination of transcription factors and epigenetic *** review presents a comprehensive overview of recent investigations into the molecular-level epigenetic regulatory factors that influence the differentiation of the erythroid *** encompasses the exploration of transcriptional,post-transcriptional,and post-translational regulatory *** intricate interplay of epigenetic and transcriptional regulatory networks in erythroid differentiation not only enhances our understanding of this fundamental biological process but also provides valuable insights into the underlying mechanisms contributing to the pathogenesis of disorders associated with abnormal erythroid *** findings hold significant promise for the development of novel therapeutic strategies to address these diseases and improve patient outcomes.

关键词： Hematopoietic stem cells Differentiation Epigenetics Post-translational regulation

有声阅读与数字阅读、纸质阅读对照实验研究——阅读效果及认知负荷差异比较

在线全文

学校读者我要写书评

暂无评论

图书情报工作 2024年第9期68卷 56-64页

作者：吴礼志洪星华中师范大学图书馆武汉430079

[目的/意义]比较有声阅读与数字阅读、纸质阅读在阅读效果及认知负荷上的差异,为不同场景下阅读方式的选择及阅读资源建设提供科学依据。[方法/过程]运用对照组实验方法,选取两种不同类型的阅读材料,借鉴PISA阅读理解测评框架编制问卷... 详细信息

[目的/意义]比较有声阅读与数字阅读、纸质阅读在阅读效果及认知负荷上的差异,为不同场景下阅读方式的选择及阅读资源建设提供科学依据。[方法/过程]运用对照组实验方法,选取两种不同类型的阅读材料,借鉴PISA阅读理解测评框架编制问卷测试阅读效果,利用NASA-TLX量表对认知负荷进行测量。而后通过描述统计与混合模型方差分析对实验结果进行定量与定性分析。[结果/结论]有声阅读在简单记忆阅读效果上与数字阅读、纸质阅读没有显著差别,但在深层次阅读效果层面不如数字阅读和纸质阅读。有声阅读的体力负荷与受挫负荷显著高于纸质阅读,有声阅读的努力负荷显著高于数字阅读。据此提出不同阅读方式的适用场景。

关键词：有声阅读数字阅读纸质阅读阅读效果

Anisotropic s-Wave Gap in the Vicinity of a Quantum Critical Point in Superconducting BaFe_(2)(As_(1-x)P_(x))_(2) Single Crystals:A Study of Point-Contact Spectroscopy

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2024年第4期41卷 118-123页

作者：詹红星林玉尺赵宇清左海艳王兴玉马肖燕李春红罗会仟陈根富李世亮任聪 School of Physics and Astronomy Yunnan UniversityKunming 650500China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Yunnan Key Laboratory for Electromagnetic Materials and Devices Yunnan UniversityKunming 650500China

We report on soft c-axis point-contact Andreev reflection(PCAR)spectroscopy combining with resistivity measurements on BaFe_(2)(As_(0.7)P_(0.3))_(2),to elucidate the superconducting gap structure in the vicinity of the quantum critical point.A double peak at the gap edge plus a dip feature at zero-bias has been observed on the PCAR spectra,indicative of the presence of a nodeless gap in BaFe_(2)(As_(0.7)P_(0.3))_(2).Detailed analysis within a sophisticated theoretical model reveals an anisotropic gap with deep gap *** PCARs also feature additional structures related to the electron-bosonic coupling *** the extracted superconducting energy gap value,a characteristic bosonic energy Ω_(b) and its temperature dependence are obtained,comparable with the spin-resonance energy observed in neutron scattering *** results indicate a magnetism-driven quantum critical point in the BaFe_(2)(As_(1-x)P_(x))_(2) system.

关键词： quantum critical resistivity

一级学科更名对档案学专业人才培养的影响及其共生理路

在线全文

学校读者我要写书评

暂无评论

山西档案 2024年第3期 141-146页

作者：李彩容洪星湖北大学历史文化学院武汉430062

档案学专业人才培养是专业建设的根本落脚点,是我国档案事业发展的动力源泉,是强化现代化人才支撑的重要一环。“图书情报与档案管理”一级学科更名为“信息资源管理”,为档案学专业人才培养带来了重要机遇,同时也提出了更高要求。共生... 详细信息

档案学专业人才培养是专业建设的根本落脚点,是我国档案事业发展的动力源泉,是强化现代化人才支撑的重要一环。“图书情报与档案管理”一级学科更名为“信息资源管理”,为档案学专业人才培养带来了重要机遇,同时也提出了更高要求。共生理论强调协同合作,实现互利双赢,基于这一理论探讨档案学专业人才培养中的共生单元、共生模式和共生环境,提出通过促进共生单元目标同向、协同创新,稳固共生模式对称互惠和构筑共生环境正向效度来构建档案学专业人才培养的共生发展之路。同时指出,“更名”不是“矮化”,更不是“取消”,档案学要始终坚守专业独立,在专业人才培养中守护和发展好自身独有的传统特色。

关键词：档案学专业人才培养一级学科更名共生理论