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森林浴对特勤慢阻肺患者运动耐力及肺功能的影响

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中国疗养医学 2024年第7期33卷 18-21页

作者：李楠赵伟超文丽娜战略支援部队兴城特勤疗养中心辽宁兴城125010 特色医学中心呼吸科北京100010

目的探究特勤慢性阻塞性肺疾病(简称慢阻肺)患者应用森林浴对其运动耐力、肺功能的影响。方法选择2022年4月至2023年4月某部队医院呼吸科收治的64例特勤慢阻肺患者为研究对象,按照随机数字表分组,对照组32例应用常规疗养干预,研究组32... 详细信息

目的探究特勤慢性阻塞性肺疾病(简称慢阻肺)患者应用森林浴对其运动耐力、肺功能的影响。方法选择2022年4月至2023年4月某部队医院呼吸科收治的64例特勤慢阻肺患者为研究对象,按照随机数字表分组,对照组32例应用常规疗养干预,研究组32例在对照组基础上应用森林浴,对比两组患者运动耐力指标、肺功能指标、睡眠质量评分及日常生活能力评分。结果干预前两组特勤慢阻肺患者评分指标(呼吸困难Borg评分、睡眠质量评分及日常生活能力评分)、6 min步行距离、第一秒用力呼气容积(FEV1)、用力肺活量(FVC)组间数据对比差异无统计学意义(P>0.05),呼吸困难Borg评分、睡眠质量评分研究组干预后相比对照组更低,6 min步行距离、FEV1、FVC及日常生活能力评分均高于对照组(P<0.05)。结论特勤慢阻肺患者疗养中应用森林浴,运动耐力、肺功能均得到极大改善,睡眠质量好,日常生活能力高。

关键词：森林浴慢性阻塞性肺疾病特勤人员运动耐力肺功能

“十三五”北京市学前教育投入与成本分担状况分析

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陕西学前师范学院学报 2024年第8期40卷 86-92页

作者：徐玲李文娜白明睿首都师范大学教育学院北京100048 北京师范大学经济与管理学院北京100875

通过对北京市“十三五”期间学前教育经费相关数据的分析,研究发现财政性教育经费持续增多,但仍不充足,社会力量投入学前教育经费的规模不断扩大,学费也在稳步上涨;就学前教育成本分担来说,政府占主导地位,社会力量分担成本比例超低,农... 详细信息

通过对北京市“十三五”期间学前教育经费相关数据的分析,研究发现财政性教育经费持续增多,但仍不充足,社会力量投入学前教育经费的规模不断扩大,学费也在稳步上涨;就学前教育成本分担来说,政府占主导地位,社会力量分担成本比例超低,农村幼儿家庭分担成本比例过高,尚未形成三方合理的成本分担机制。为此,政府加大财政投入力度,优化经费支出结构;鼓励社会力量参与办园,细化和调整财政补助政策;降低农村幼儿家庭成本分担重担,实现成本分担合理化,最终实现学前教育的优质普惠发展。

关键词：财政性教育经费学前教育成本成本分担

Visual test paper based on Au/δ-MnO_(2) hollow nanosphere oxidase-like activity regulation using hexavalent chromium as a smart switch

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Rare Metals 2024年第2期43卷 711-722页

作者： wen-Chang Zhuang Hai-Yue Zhang Zhen-Yang Chen wen-Jing Cheng Wei-Dan na Zhao li lin Tian School of Materials and Chemical Engineering Xuzhou University of TechnologyXuzhou221018China School of Chemistry and Environmental Science Yili Normal UniversityYining835000China

Paper-based sensing platform is a point of need analytical toolkit for safety ***,the sensitivity,specificity,and simplicity are still ***,we report a novel strategy(Au/δ-MnO_(2) hollow nanosphere and 3,3′,5,5′-tetramethylbenzidine(TMB)induced test strips for signal-on detection)that can be utilized for hexavalent chromium(Cr^(6+))***,Cr^(6+)(CrO_(4)^(2−)) as a smart switch can remarkably enhance the oxidase-like activity of Au/δ-MnO_(2) hollow *** presence of Cr^(6+) can regulate the surface electronic redistribution of Au/δ-MnO_(2) and adjust the geometric configuration,which leads to the improvement in oxidase-like activity of Au/δ-MnO_(2).As a proof-of-concept application,a visual paper-based sensing platform of Cr^(6+) along with quantitative analysis by the test strips was successfully *** paper-based sensing platform exhibits a linear range with excellent selectivity for other interfering substances and lower limit of detection of 0.09μmol·L^(−1),providing a promising toolkit at-home Cr^(6+) measurement and environmental monitoring.

关键词： Point of need Colorimetric biosensing platform Au/δ-MnO_(2) hollow nanosphere Test strip Cr^(6+)

Layered niobium carbide enabling excellent kinetics and cycling stability of li-Mg-B-H hydrogen storage material Layered niobium carbide enabling excellent kinetics

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Rare Metals 2024年第3期43卷 1153-1166页

作者： li-wen Lu Hui Luo Guang-Xu li Yun li Xin-Hua Wang Cun-Ke Huang Zhi-QiangLan wen-Zheng Zhou Jin Guo Mohammad Ismail Hai-Zhen liu Guangxi Novel Battery Materials Research Center of Engineering Technology Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems IntegrationSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China State Key Laboratory of Featured Metal Materials and life-Cycle Safety for Composite Structures Nanning530004China School of Mechanical and Electrical Engineering Quzhou College of TechnologyQuzhou324000China Department of Materials Science and Engineering Zhejiang UniversityHangzhou310027China Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu21030Kuala NerusTerengganuMalaysia Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin300071China

The li-Mg-B-H composite(2liBH_(4)+MgH_(2))has a high capacity of 11.4 wt%as a hydrogen storage ***,the slow kinetics and poor cycling stability severely restrict its practical *** this work,a layered Nb_(2)C MXene was first synthesized and then introduced to tailor the kinetics and cycling stability of the li-Mg-B-H *** milled 2liH+MgB_(2)composites were initially hydrogenated to obtain the 2liBH_(4)+MgH_(2)*** 2liBH_(4)+MgH_(2)+5wt%Nb_(2)C can release 9.0 wt%H_(2)in 30 min at 400℃,while it is only 2.7 wt%for the undoped 2liBH_(4)+MgH_(2).The dehydrogenation activation energies of MgH_(2)and liBH_(4)are 123 and 154 kJ·mol^(-1)respectively for the 5 wt%Nb_(2)C-doped composite,lower than the undoped composite(164 and 165 kJ·mol^(-1)).The 2liBH_(4)+MgH_(2)+5 wt%Nb_(2)C possesses excellent cycling stability,with the reversible capacity only slightly reduced from 9.4 wt%for the 1st cycle to 9.3 wt%for the 20th ***_(2)C keeps stable in the composite and acts as an efficient catalyst for the li-Mg-B-H *** is believed that both the layered structure and the active Nb element contribu te to the enhanced hydrogen storage performances of the li-Mg-B-H *** work confirms that the Nb_(2)C MXene with layered stru cture has a significant enhancing impact on the li-Mg-B-H hydrogen storage materials,which is different from the bulk NbC.

关键词： Hydrogen storage lithium borohydride Magnesium hydride Nb_(2)C MXene

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内分泌科实习护士岗前培训需求的调查与分析

继续医学教育 2024年第7期38卷 102-105页

作者：文丽娜张晶晶赵一楠田璟吴小坡首都医科大学附属北京安贞医院内分泌科北京100029

目的了解岗前护士在内分泌科培训的需求,为制定符合内分泌科岗前护士岗位胜任力培训计划提供依据。方法本研究选取2023年1—6月于首都医科大学附属北京安贞医院内分泌科实习的84名岗前护士,采用自我导向学习评定量表(self-rating scale ... 详细信息

目的了解岗前护士在内分泌科培训的需求,为制定符合内分泌科岗前护士岗位胜任力培训计划提供依据。方法本研究选取2023年1—6月于首都医科大学附属北京安贞医院内分泌科实习的84名岗前护士,采用自我导向学习评定量表(self-rating scale of self-directed learning,SRSSDL),使用问卷星设计调查问卷,统一对研究对象进行问卷调查,对岗前护士进行现场测试调查,通过问卷星反馈收集数据。结果通过分析,得出内分泌科岗前护士抢救药物相关知识、医院各项规章制度、患者紧急状态时的应急护理、临床常用药物的相关知识及护理、医院感染知识和职业防护知识、糖尿病酮症酸中毒的护理、护理投诉及差错事故的防范、常用临床标本采集注意事项及临床意义需求程度高,其中抢救药物相关知识以(4.81±0.95)分的需求得分排名第一。结论内分泌科岗前护士需要进行有科室特点的培训,但应该根据岗前护士培训需求的现况,制定切实可行的内分泌科培训方案,从而帮助岗前护士尽快达到岗位胜任力标准。

关键词：自我导向学习评定量表岗前培训岗位胜任力培训需求内分泌调查问卷

CRABP1-mediated non-canonical retinoic acid signaling in motor neurons and neural stem cells

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Neural Regeneration Research 2024年第6期19卷 1169-1170页

作者： li-na Wei Department of Pharmacology University of Minnesota Medical School

Retinoic acid(RA), the active metabolite of vitamin A(the retinoids), elicits a wide spectrum of biological activities critical to the development and health of most of the organ systems including the nervous systems(Corcoran et al., 2002). The effects of RA are mediated by two very distinct pathways; the first is manifested in the nucleus by binding to a large family of nuclear RA receptors(RARs) to regulate proper expression of RAtargeted genes,

关键词：

Partial linear Model Averaging Prediction for Longitudinal Data

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Journal of Systems Science & Complexity 2024年第2期37卷 863-885页

作者： li na FEI Yu ZHANG Xinyu Faculty of Science Kunming University of Science and TechnologyKunming 650500China School of Statistics and Mathematics Yunnan University of Finance and EconomicsKunming 650221China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China

Prediction plays an important role in data *** averaging method generally provides better prediction than using any of its *** though model averaging has been extensively investigated under independent errors,few authors have considered model averaging for semiparametric models with correlated *** this paper,the authors offer an optimal model averaging method to improve the prediction in partially linear model for longitudinal *** model averaging weights are obtained by minimizing criterion,which is an unbiased estimator of the expected in-sample squared error loss plus a *** properties,including asymptotic optimality and consistency of averaging weights,are established under two scenarios:(i)All candidate models are misspecified;(ii)Correct models are available in the candidate *** studies and an empirical example show that the promise of the proposed procedure over other competitive methods.

关键词： Asymptotic optimality longitudinal data model averaging estimator partially linear model prediction

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A highly sensitive multiple-mode optical thermometer designed in Eu^(2+)/^(3+)and li^(+)co-doped polymorphism compound LaSc_(3)(BO_(3))_(4)

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Journal of Advanced Ceramics 2024年第6期13卷 821-833页

作者： nan Yang Zhuo li Tingxia Zhou Ziwang Zhang wen Shi Yexiang Tong Jianxin Shi School of Chemistry IGCMESun Yat-sen UniversityGuangzhou 510006China MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry IGCMEThe Key Lab of Low-Carbon Chemistry&Energy Conservation of Guangdong ProvinceSun Yat-sen UniversityGuangzhou 510006China

Noncontact optical thermometers have attracted widespread attention,but existing problems such as single-mode and low-sensitivity thermometers still urgently need to be ***,a novel multiple-mode thermometer was designed for the polymorphism LaSc_(3)(BO_(3))_(4):Eu^(2+/3+),li^(+).X-ray diffraction(XRD)patterns revealed a slight transition betweenα-andβ-phases with the concentrations of the dopants,which is further proved by structure refinements and first-principles *** coexistence of Eu^(2+)and Eu^(3+)in the phosphors and their relative percentages were confirmed by X-ray absorption near-edge structure(XANES)*** from appropriate emissions from Eu^(2+)and Eu^(3+)without obvious energy transfer and their opposite changing trends with temperatures under 307 nm excitation,a triple-mode optical thermometer is obtained for this material within the temperature range of 150–450 *** highest sensitivities of 27.65,14.05,and 7.68%·K^(−1)are achieved based on two fluorescence intensity ratio(FIR)modes of Eu^(2+)and Eu^(3+)(5d–4f/^(5)D_(0)–^(7)F_(2,4))and the fluorescence lifetime(FL)mode of Eu^(2+),*** the best of our knowledge,the former is almost the highest in Eu^(2+)and Eu^(3+)co-doped *** results indicate that this material may be used as an excellent multiple-mode optical thermometer.

关键词： phase transition europium(Eu)ions multiple-mode optical thermometer thermal quenching properties fluorescence intensity ratio(FIR) fluorescence lifetime(FL)

Polyimide covalent organic frameworks as efficient solid-state li^(+) electrolytes

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Science China Chemistry 2024年第5期67卷 1647-1652页

作者： Xu liu Shi Wang Siqi liu Chengfang liu Xiangchun li Jian Wu Dazhi li Shihao Xu Chongyang liu wen-Yong Lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&TelecommunicationsNanjing 210023China

Covalent organic frameworks(COFs) are attractive porous crystalline materials with extremely high stability, easy functionalization, and open channels, which are expected to be unique ion conductors/transporters in lithium ion batteries(liBs). Despite recent advances, low ion conductivity and low transference number, resulting in low charging/discharging rate, low energy density, and short battery life, are the main issues that limit their direct application as solid electrolytes in liBs. Here, we designed and synthesized a novel polyimide COF, namely, TAPA-PDI-COF, with abundant C=O groups, which has been successfully employed as high-performance solid electrolytes by doping TAPA-PDI-COF and succinonitrile(SN). Both the well-defined nanochannels of COFs and SN confined in the well-aligned channels restricted the free migration of anions, while C=O on COFs and CN groups of SN enhanced li^(+) transport, thus achieving a high ion conductivity of 0.102 m S cm^(-1)at 80 °C and a high lithium-ion transference number of 0.855 at room temperature. According to density functional theory(DFT)calculations, li-ion migration mainly adopted in-plane transport rather than the axial pathway, which may be due to the shorter hopping distances in the planar pathway. The results suggest an effective strategy for the design and development of all-solidstate ionic conductors for achieving high-performance liBs.

关键词： lithium ion batteries(liBs) covalent organic frameworks(COFs) solid-state ion conductors solid-state electrolytes ion conductivity