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Zeros of Complete Symmetric Polynomials over Finite Fields

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Journal of Systems Science & Complexity 2024年第4期37卷 1772-1788页

作者： CAO wei School of Mathematics and Statistics Minnan Normal UniversityZhangzhou 363000China

Wan and Zhang(2021) obtained a nontrivial lower bound for the number of zeros of complete symmetric polynomials over finite fields,and proposed a problem whether their bound can be *** this paper,the author improves Wan-Zhang's bound from three *** proposed results are based on the estimates related to the number of certain permutations and the value sets of non-permutation polynomials associated to the complete symmetric *** the author believes that there are still possibilities to improve the bounds and hence Wan-Zhang's bound.

关键词： Complete symmetric polynomial finite field permutation polynomial value set

OnFractional(g,f,n′,m)-Critical Covered Graphs

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Journal of the Operations Research Society of China 2024年第2期12卷 446-460页

作者： wei Gao wei-Fan Wang School of Information Science and Technology Yunnan Normal UniversityKunming 650500YunnanChina Department of Mathematics Zhejiang Normal UniversityJinhua 321004ZhejiangChina

The main contribution in this article is threefold:(1)we show the necessary and sufficient condition for graphs to be fractional(g,f)-covered which can be expressed in different forms,and extended to fractional(g,f,m)-covered graphs;(2)the concept of fractional-critical covered graph is put forward and its necessary and sufficient condition is given;(3)we present the degree condition for a graph to be fractional(g,f,n′,m)-critical covered,and show that degree bound is sharp when m is ***,the related result in fractional(a,b,n′,m)-critical covered setting is also verified.

关键词： Network Fractional factor Data transmission Fractional covered graph Fractional critical covered graph

Thiamine-modified metabolic reprogramming of human pluripotent stem cell-derived cardiomyocyte under space microgravity

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2132-2142页

作者： Xinglong Han Lina Qu Miao Yu Lingqun Ye Liujia Shi Guangfu Ye Jingsi Yang Yaning Wang Hao Fan Yong Wang Yingjun Tan chunyan Wang Qi Li wei Lei Jianghai Chen Zhaoxia Liu Zhenya Shen Yinghui Li Shijun Hu Department of Cardiovascular Surgery of the First Affiliated Hospital&Institute for Cardiovascular Science State Key Laboratory of Radiation Medicine and ProtectionSuzhou Medical CollegeSoochow UniversitySuzhouChina State Key Laboratory of Space Medicine China Astronaut Research and Training CenterBeijingChina Department of Hand Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina

During spaceflight,the cardiovascular system undergoes remarkable adaptation to microgravity and faces the risk of cardiac ***,the effects and mechanisms of microgravity on cardiac morphology,physiology,metabolism,and cellular biology need to be further *** China started constructing the China Space Station(CSS)in 2021,we have taken advantage of the Shenzhou-13 capsule to send human pluripotent stem cell-derived cardiomyocytes(hPSC-CMs)to the Tianhe core module of the *** this study,hPSC-CMs subjected to space microgravity showed decreased beating rate and abnormal intracellular calcium *** and transcriptomic analyses revealed a battery of metabolic remodeling of hPSC-CMs in spaceflight,especially thiamine *** microgravity condition blocked the thiamine intake in *** decline of thiamine utilization under microgravity or by its antagonistic analog amprolium affected the process of the tricarboxylic acid *** decreased ATP production,which led to cytoskeletal remodeling and calcium homeostasis imbalance in *** importantly,in vitro and in vivo studies suggest that thiamine supplementation could reverse the adaptive changes induced by simulated *** study represents the first astrobiological study on the China Space Station and lays a solid foundation for further aerospace biomedical *** data indicate that intervention of thiamine-modified metabolic reprogramming in human cardiomyocytes during spaceflight might be a feasible countermeasure against microgravity.

关键词： programming battery modified

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高血压性脑出血病人的治疗及护理进展

护理研究 2005年第3期19卷 383-385页

作者：韦春燕广西壮族自治区罗城仫佬族自治县人民医院

简要叙述了高血压性脑出血的治疗 ,提出高血压性脑出血的急性期护理应注重病情观察及并发症监护 ,恢复期的护理重点是做好康复训练指导。

关键词：高血压性脑出血治疗护理

High Speed Sintering:Assessing the Influence of Energy Input on Microstructure and Mechanical Properties of Polyether Block Amide(PEBA)Parts

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Chinese Journal of Polymer Science 2024年第5期42卷 675-682,I0004,I0010页

作者： Jiang-Tao Sun Zhi-Yong Fan Yi-wei Mao wei Li wei Zhu Dao-Sheng Cai Qing-Song wei State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan430074China State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430074China National Engineering Research Centre for High Efficiency Grinding Hunan UniversityChangsha410082China Wuhan EasyMFG Technology CO. LTDWuhan430074China

High speed sintering,a new powder-bed fusion additive manufacturing technology,utilizes infrared lights(IR)to intensely heat and melt polymer *** presence of defects such as porosity,which is associated with particle coalescence,is highly dependdent on the level of energy *** study investigate the influcence of energy input on porosity and its subsequent effects on the mechanical properties and microstructures of PEBA *** parts were manufactured with a variety of lamp powers,resulting in a range of energy input levels spanning from low to ***,they underwent testing using Archimedes’method,followed by tensile *** porosity,mechanical characteristics,and energy input exhibit a strong correlation;inadequate energy input was the primary cause of pore *** the reduced IR light power resulted in the following outcomes:porosity,ultimate tensile strength,and elongation of 1.37%,7.6 MPa,and 194.2%,*** the energy input was further increased,the porosity was reduced to as low as 0.05%and the ultimate tensile strength and elongation were increased to their peak values of 233.8%and 9.1 MPa,respectively.

关键词： High speed sintering Additive manufacturing Energy input Powder bed fusion PEBA

High-sensitivity formaldehyde gas sensor based on Ce-doped urchin-like SnO_(2) nanowires derived from calcination of Sn-MOFs

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Frontiers of Materials Science 2024年第1期18卷 29-43页

作者： wei Xiao wei Yang Shantang Liu Hubei Key Lab of Novel Reactor&Green Chemical Technology School of Chemistry and Environmental EngineeringWuhan Institute of TechnologyWuhan 430073China Hubei Key Laboratory of Wudang Local Chinese Medicine Research Department of ChemistrySchool of Pharmaceutical SciencesHubei University of MedicineShiyan 442000China

Metal-organic frameworks(MOFs)have attracted widespread attention due to their regular structures,multiple material centers,and various *** are always considered as one kind of ideal templates for developing highly sensitive and selective gas *** this study,the advantages of MOFs with the high specific surface area(71.9891 m^(2)·g^(-1))and uniform morphology were fully utilized,and urchin-like SnO_(2) nanowires were obtained by the hydrothermal method followed by the calcination using Sn-MOFs consisting of the ligand of C_(9)H_(6)O_(6)(H_(3)BTC)and Sn/Ce center ions as sacrificial *** unique urchin-like nanowire structure facilitated gas diffusion and adsorption,resulting in superior gas sensitivity.A series of Ce-doped SnO_(2) nanowires with different doping ratios were synthesized,and their gas sensing properties towards formaldehyde were *** resulted Ce-SnO_(2) was revealed to have high sensitivity(201.2 at 250℃),rapid response(4 s),long-term stability,and good repeatability for formaldehyde sensing,and the gas sensing mechanism of Ce-SnO_(2) exposed to formaldehyde was also systematically discussed.

关键词： Ce-SnO_(2) SnO_(2) gas sensor formaldehyde Sn-MOF

学校环境下适应性体育课程促进智力与发展性残疾儿童心理运动发展的系统综述

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中国康复理论与实践 2023年第8期29卷 910-918页

作者：魏晓微杨剑魏春艳贺启令华东师范大学体育与健康学院上海市200241 贵州师范大学体育学院贵州贵阳市550001 大连电子学校辽宁大连市116000 贵州中医药大学第二附属医院贵州贵阳市550003

目的分析学校环境下适应性体育课程中的体育活动对智力与发展性残疾儿童心理运动发展的效益。方法检索EBSCO,PubMed、Embase、Web of Science和中国知网。收集建库至2023年5月公开发表的智力与发展性残疾儿童适应性体育课程以及心理运... 详细信息

目的分析学校环境下适应性体育课程中的体育活动对智力与发展性残疾儿童心理运动发展的效益。方法检索EBSCO,PubMed、Embase、Web of Science和中国知网。收集建库至2023年5月公开发表的智力与发展性残疾儿童适应性体育课程以及心理运动发展相关的文献,进行系统综述。结果纳入7篇英文随机对照试验,来自4个国家,涉及236例被试,年龄6~18岁。主要来源体育运动与心理运动、发展障碍、适应性体育、儿童心理运动相关领域期刊,发表时间集中在2016年之后。学校环境下适应性体育课程中的身体活动内容主要包括肌肉和平衡训练、感知动作训练、上下楼梯、使用器材(如跑步机、步机、交叉训练机和固定自行车)的有氧运动、仰卧起坐、跳跃运动、律动性活动、专注于视觉输入的同时静态和动态平衡活动、以不同的节奏改变位置并在空间中移动、呼吸和伸展运动、适应性乒乓球运动技能训练、球的控制练习、手眼协调练习,干预强度为轻度至中等强度,每次45~60 min,每周1~5次,持续8~12周。促进心理运动发展的效益包括:加强节奏感知能力以及提高视觉、听觉、触觉的综合感知能力;显著改善肌肉力量和耐力、总运动能力、精细运动能力如精细运动整合、跑步速度和敏捷性、平衡性;改善身体灵活性和协调性,如上肢协调能力、静态平衡、力量和灵活性;改善正确反应、持续反应和概念水平的反应能力,提高运动灵活性和敏捷性;显著改善生活自理能力(自助饮食、自助穿衣、自我指导),仰卧起坐达到标准次数显著增多,跳跃拿球的成功率提高,运动技能熟练程度和执行功能都得到显著改善。结论本系统综述根据PRISMA指南构建了学校环境下智力与发展性残疾儿童通过适应性体育课程参与体育活动促进心理运动发展的PICO架构。适应性体育课程促进智力与发展性残疾儿童心理运动发展主要体现在5个方面:感知、运动控制、协调、反应时间、动作计划和执行。

关键词：智力与发展性残疾儿童适应性体育课程心理运动发展系统综述

Risk Constrained Self-scheduling of AA-CAES Facilities in Electricity and Heat Markets:A Distributionally Robust Optimization Approach

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1159-1167页

作者： Zhiao Li Laijun Chen wei wei Shengwei Mei Department of Electrical Engineering Tsinghua UniversityBeijing 100084China New Energy(Photovoltaic)Industry Research Center Qinghai UniversityXining 810016China IEEE

Advanced adiabatic compressed air energy storage(AA-CAES)has the advantages of large capacity,long service time,combined heat and power generation(CHP),and does not consume fossil fuels,making it a promising storage technology in a low-carbon *** appropriate self-scheduling model can guarantee AA-CAES’s profit and attract ***,very few studies refer to the cogeneration ability of AA-CAES,which enables the possibility to trade in the electricity and heat markets at the same *** this paper,we propose a multimarket self-scheduling model to make full use of heat produced in *** volatile market price is modeled by a set of inexact distributions based on historical data through-***,the self-scheduling model is cast as a robust risk constrained program by introducing Stackelberg game theory,and equivalently reformulated as a mixed-integer linear program(MILP).The numerical simulation results validate the proposed method and demonstrate that participating in multienergy markets increases overall *** impact of uncertainty parameters is also discussed in the sensibility analysis.

关键词： Advanced adiabatic compressed air energy storage(AA-CAES) conditional value at risk(CVaR) distributionally robust optimization(DRO) heat market self-scheduling Stackelberg game

冠状动脉支架术后抗凝期泌尿系手术患者的护理要点

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中国循证心血管医学杂志 2019年第12期11卷 1527-1528页

作者：隗春燕首都医科大学附属北京安贞医院

目的探究综合护理干预对冠状动脉(冠脉)支架术后抗凝期泌尿系手术患者术后预后效果影响并总结护理要点。方法选取2017年1月至2019年1月于首都医科大学附属北京安贞医院收治的动脉支架术后抗凝期泌尿系手术患者72例,随机分为实验组和对照... 详细信息

目的探究综合护理干预对冠状动脉(冠脉)支架术后抗凝期泌尿系手术患者术后预后效果影响并总结护理要点。方法选取2017年1月至2019年1月于首都医科大学附属北京安贞医院收治的动脉支架术后抗凝期泌尿系手术患者72例,随机分为实验组和对照组(每组各36例)。实验组患者术后采用综合护理干预,对照组采用常规护理。比较两组患者护理满意度、住院时间、术后并发症发生情况。结果实验组护理满意度显著高于对照组(P<0.05),实验组术后进食时间、住院时间显著低于对照组(P<0.05),实验组术后并发症发生率显著低于对照组(P<0.05)。结论冠脉支架术后抗凝期泌尿系患者术后可实施综合护理干预,重点预防心血管事件,患者术后并发症发生率明显降低,预后效果较好。

关键词：冠状动脉支架术抗凝期泌尿系手术护理要点