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Recycled polymer:Green roads for polyester plastics

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Green Carbon 2024年第1期2卷 1-11页

作者： Rulin Yang Guangqiang Xu Wenjie Tao qinggang wang Yong Tang Key Laboratory of Biobased Materials Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Shandong Energy Institute Qingdao 266101China Qingdao New Energy Shandong Laboratory Qingdao 266101China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

Plastics are integral to numerous significant social ***,their contribution to environmental pollution and climate crises cannot be disregarded,as their negative impact on the environment increases with incremental production capacity and *** global action is urgently required to promote the green recycle of plastics to prevent their accumulation in the environment and mitigate carbon *** review aims to reveal the paths of green development for polyester plastics,incorporating the trends of the green revolution in mature commercial polyester plastics,newly emerging biodegradable polyester plastics,and future polyester plastics.A critical discussion was conducted on the current and potential future research areas from multiple perspectives,including raw materials,processes,and recycling,to propel us into a future marked by sustainability.

关键词： Recycled polymer Polyester plastics Recycling Bio-based Plastic economy

Associations between health-related fitness and patient-reported symptoms in newly diagnosed breast cancer patients

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Journal of Sport and Health Science 2024年第6期13卷 851-862页

作者： Ki-Yong An Fernanda Z.Arthuso Myriam Filion Spencer J.Allen Stephanie M.Ntoukas Gordon J.Bell Jessica McNeil qinggang wang Margaret L.McNeely Jeff K.Vallance Lin Yang S.Nicole Culos-Reed Leanne Dickau John R.Mackey Christine M.Friedenreich Kerry S.Courneya Faculty of Kinesiology Sportand RecreationCollege of Health SciencesUniversity of AlbertaEdmonton T6G 2H9Canada Department of Kinesiology School of Health and Human SciencesUniversity of North Carolina at GreensboroGreensboroNC 27412USA Department of Cancer Epidemiology and Prevention Research Cancer Care AlbertaAlberta Health ServicesCalgary T2S 3C3Canada Faculty of Rehabilitation Medicine University of AlbertaEdmonton T6G 2H9Canada Faculty of Health Disciplines Athabasca UniversityAthabasca T9S 3A3Canada Department of Oncology Cumming School of MedicineUniversity of CalgaryCalgary T2N 4N1Canada Faculty of Kinesiology University of CalgaryCalgary T2N 1N4Canada Faculty of Medicine and Dentistry University of AlbertaEdmonton T6G 2H9Canada

Background:Newly diagnosed breast cancer patients experience symptoms that may affect their quality of life,treatment outcomes,and *** and managing breast cancer-related symptoms soon after diagnosis is *** purpose of this study was to investigate the associations between health-related fitness(HRF)and patient-reported symptoms in newly diagnosed breast cancer ***:This study utilized baseline data from the Alberta Moving Beyond Breast Cancer Cohort Study that were collected within 90 days of *** measures included peak cardiopulmonary fitness(peak volume of oxygen consumption(VO_(2peak))),maximal muscular strength and endurance,flexibility,and body *** measures included depression,sleep quality,and *** multivariable logistic regression was performed for ***:Of 1458 participants,51.5%reported poor sleep quality,26.5%reported significant fatigue,and 10.4%reported moderate *** multivariable-adjusted models,lower relative VO_(2peak)was independently associated with a greater likelihood of all symptom measures,including moderate depression(p<0.001),poor sleep quality(p=0.009),significant fatigue(p=0.008),any symptom(p<0.001),and multiple symptoms(p<0.001).VO_(2peak)demonstrated threshold associations with all symptom measures such that all 3 lower quartiles exhibited similar elevated risk compared to the highest *** strength of the threshold associations varied by the symptom measure with odds ratios ranging from-1.5 for poor sleep quality to-3.0 for moderate depression and multiple ***,lower relative upper body muscular endurance was also independently associated with fatigue in a dose-response manner(p=0.001),and higher body weight was independently associated with poor sleep quality in an inverted U pattern(p=0.021).Conclusion:Relative VO_(2peak)appears to be a critical HRF component associated with multiple patient-reported symptoms in newly diag

关键词： Breast cancer Fatigue Depression Sleep quality Cardiorespiratory fitness

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企业共创共享文化的价值创造机理及路径

中国软科学 2024年第8期 154-166页

作者：王清刚汪帅乐辉石少军中南财经政法大学会计学院湖北武汉430073 金徽酒股份有限公司甘肃陇南742500

员工是对企业发展影响最直接、最活跃的生产要素,员工情感认同和创新能力对企业绩效及价值创造能够产生重大影响。员工文化是企业文化的重要构成,基于对金徽企业的调研数据和财务指标,运用结构方程模型,实证分析“共创共享”员工文化的... 详细信息

员工是对企业发展影响最直接、最活跃的生产要素,员工情感认同和创新能力对企业绩效及价值创造能够产生重大影响。员工文化是企业文化的重要构成,基于对金徽企业的调研数据和财务指标,运用结构方程模型,实证分析“共创共享”员工文化的价值创造机理及路径。研究发现,“共创共享”员工文化对员工绩效具有显著的正向效应,且情感认同及创新行为在此过程中发挥中介作用。优秀的员工文化还能提高企业行业竞争力和科技创新能力,有利于企业长久地创造价值。企业应重视和完善员工文化建设,增强情感认同,将企业文化内化于员工行为,形成价值共创共享命运共同体,激发员工情感认同和创新活力,助力企业高质量发展。

关键词：价值创造企业文化员工绩效价值共创共享命运共同体

《关于执行刑法确定罪名的补充规定(八)》的理解与适用

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人民司法 2024年第4期 36-37页

作者：王庆刚最高人民法院

日前,最高人民法院、最高人民检察院联合发布《关于执行刑法确定罪名的补充规定(八)》(法释【2024】3号,以下简称《罪名补充规定(八)》),自2024年3月1日起与刑法修正案(十二)同步施行。《罪名补充规定(八)》的公布施行,对于规范办理相... 详细信息

日前,最高人民法院、最高人民检察院联合发布《关于执行刑法确定罪名的补充规定(八)》(法释【2024】3号,以下简称《罪名补充规定(八)》),自2024年3月1日起与刑法修正案(十二)同步施行。《罪名补充规定(八)》的公布施行,对于规范办理相关刑事案件,确保修改后刑法的正确、统一适用具有重要意义。为便于司法实践中正确理解和适用,现就《罪名补充规定(八)》的制定背景、罪名确定的主要考虑和具体罪名确定介绍如下。

关键词：确定罪名刑法修正案刑事案件罪名确定补充规定理解与适用最高人民法院

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地下中深孔爆破的最佳减振延期时间研究

爆破器材 2024年第3期53卷 58-64页

作者：王社光杨志强王立杰杨曦王福全王庆刚河北钢铁集团沙河中关铁矿有限公司河北邢台054100 河北省复杂铁矿低碳智能高效开采技术创新中心河北邢台054100 华北理工大学矿业工程学院河北唐山063210

以地下铁矿扇形中深孔爆破为研究对象,对实际采集的爆破振动波进行全波段的频率分析,在Matlab拟合叠加分析的基础上,提出了以高频次子周期对应的半周期为最佳延期时间的方法,并进行了数值模拟与现场验证。研究表明:将爆破振动波主频对... 详细信息

以地下铁矿扇形中深孔爆破为研究对象,对实际采集的爆破振动波进行全波段的频率分析,在Matlab拟合叠加分析的基础上,提出了以高频次子周期对应的半周期为最佳延期时间的方法,并进行了数值模拟与现场验证。研究表明:将爆破振动波主频对应的半周期进行错相相减,减振效果并不明显,甚至有振动增强的现象;孔间最佳延期时间主要与爆破振动波有效波段内所包含的高频次子周期相关。以高频次子周期确定延期时间准确性更高。多次叠加减振强度的大小仍与高频次子周期相关。只是在低叠加次数条件下,两者之间的敏感性不高,次高频次子周期也可以起到一定的降振效果。但是,随着叠加次数的增加,两者之间的关联性不断增强,故只有高频次子周期才有良好的连续叠加减振效果。

关键词：中深孔爆破孔间最佳延期时间 Matlab数据拟合高频次子周期减振

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浸水作用下磁铁矿动态损伤及能量演化机制

金属矿山 2024年第4期 95-101页

作者：路燕泽甘德清王社光刘志义王庆刚王立杰河北钢铁集团沙河中关铁矿有限公司河北邢台054100 河北省复杂铁矿低碳智能高效开采技术创新中心河北邢台054100 华北理工大学矿业工程学院河北唐山063210 华北理工大学矿产资源绿色开发与生态修复协同创新中心河北唐山063210 河北省矿业开发与安全技术实验室河北唐山063210

为分析浸水作用下磁铁矿的动态损伤特性以及能量运移规律,对磁铁矿进行不同时间的浸水处理,利用霍普金森压杆试验系统(SHPB)对浸水磁铁矿开展了不同冲击载荷值的动态压缩试验。结果表明:浸水作用下磁铁矿动态破坏变形过程分为弹性变形,... 详细信息

为分析浸水作用下磁铁矿的动态损伤特性以及能量运移规律,对磁铁矿进行不同时间的浸水处理,利用霍普金森压杆试验系统(SHPB)对浸水磁铁矿开展了不同冲击载荷值的动态压缩试验。结果表明:浸水作用下磁铁矿动态破坏变形过程分为弹性变形,屈服损伤变形以及失稳破坏3个阶段;磁铁矿动态抗压强度随浸水时间增加而减小,两者呈指数递减关系,而磁铁矿的动态抗压强度减少值先增大后减小,当浸水时间为14 d时,动态抗压强度减小值最大;随浸水时间增加,磁铁矿破碎程度增大,但浸水时间为14 d的整体破碎均匀度最佳;浸水磁铁矿能量演化过程分为弹性储能,能量转换,能量耗散3个阶段;增加动态载荷值可提高浸水时间14 d的磁铁矿能量利用率,在此浸水时间下磁铁矿能耗密度最大,表明开展磁铁矿浸水处理可以有效改善矿石破碎的不均匀度,减少二次破碎工作量,一定程度上降低爆破能耗。研究结果为富水矿体安全高效开采提供一定理论指导。

关键词：浸水作用磁铁矿动态损伤能量演化

Evolutionary history and climate conditions constrain the flower colours of woody plants in China

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Journal of Plant Ecology 2022年第1期15卷 196-207页

作者： qinggang wang Qiang Guo Xiulian Chi Shaoqi Zhu Zhiyao Tang Department of Ecology and Ecological Engineering College of Resources and Environmental Sciencesand Key Laboratory of Biodiversity and Organic Farming of Beijing CityChina Agricultural UniversityBeijing 100193China Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education College of Urban and Environmental SciencesPeking UniversityBeijing 100871China State Key Laboratory Breeding Base of Dao-di Herbs National Resource Center for Chinese Materia MedicaChina Academy of Chinese Medical ScienceBeijing 100700China

In this study,we investigated(i)the differences in flower colour composition among growth forms of woody plants in China and(ii)the influences of biogeographic regions,evolutionary age and climatic conditions on geographic variation in the proportions of different flower *** distribution maps and flower colour information(white,red,yellow,yellow-green,green and blue-purple)of 7673 Chinese woody plant species and a dated genus-level phylogenetic tree,we compared flower colour composition among different growth forms(shrubs,trees and lianas).We further estimated the relationships of geographical patterns in the proportions of different flower colours with seven different biogeographic regions,evolutionary age and different contemporary climatic *** with trees or lianas,shrubs showed a higher proportion of species with anthocyanin-based red and blue-purple *** geographic patterns of flower colour composition of woody plants in China were strongly influenced by regional effects and contemporary climate,especially precipitation and ultraviolet B *** proportion of species with presumably bee-pollinated yellow and blue-purple flowers and stress tolerant anthocyanin-based red and blue-purple flower colours tended to be high in the northwestern part of *** flowers tended to evolve earlier than others,but evolutionary age had quite weak influences on the geographic pattern of flower *** results reflect both evolutionary and environmental constraints on the distribution of flower colours of woody plants in China.

关键词： growth form evolutionary age selection processes woody species biogeographical regions

Chemical upcycling of poly(lactide) plastic waste to lactate ester,lactide and new poly(lactide) under Mg-catalysis condition

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Chinese Chemical Letters 2023年第10期34卷 275-280页

作者： Xianyue Zhou Qiuyang Liu Guangqiang Xu Rulin Yang Hongguang Sun qinggang wang College of Polymer Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China Key Laboratory of Biobased Materials Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Chemical upcycling of end-of-life poly(lactide) plastics to lactide,lactate ester and new poly(lactide)has been achieved by using magnesium bis[bis(trimethylsilyl)amide][Mg(HMDS)_(2)]as ***(HMDS)2 showed high efficiency in L-lactide polymerization and poly(lactide) ***(HMDS)_(2)/Ph_(2) CHOH catalytic system displayed high ring-opening selectivity and the characteristic of immortal *** advantage of transesterification,depolymerizations of end-oflife poly(lactide) plastics to lactate ester (polymer to value-added chemicals) and lactide (polymer to monomer) were achieved with high ***,a new“depolymerization-repolymerization”strategy was proposed to directly transform poly(lactide) into new poly(lactide).This work provides a theoretical basis for the design of polymerization and depolymerization catalysts and promotes the development of degradable polymers.

关键词： Upcycling Poly(lactide) Mg(HMDS)2 Polymerization Depolymerization

Effects of Co-Firing Biomass and Pulverized Coal on NO Reduction in Cement Precalciner

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Journal of Thermal Science 2024年第2期33卷 751-760页

作者： LI Pengpeng REN Qiangqiang LYU qinggang wang Mingyue School of Energy Power and Mechanical Engineering North China Electric Power UniversityBeijing102206China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China

With increased awareness of the large-scale CO_(2) emissions from the cement industry,there has been growing focus on greenhouse gas reduction *** all these strategies,fuel substitution using biomass fuel is extensively used to achieve CO_(2) zero-emission in cement *** to the avoidable high-temperature-generated thermal nitrogen oxides during cement production,research on the impact of biomass application on nitrogen oxide emissions shall be carried *** types of biomass fuel and bituminous coal were used to investigate the NO reduction characteristics under different O_(2) concentrations on experimental *** was found that the change in oxygen concentration from 9% to 1% increased the reaction time in the reactor from 555 s to 1425 s,which means the increase in oxygen concentration can lead to shorter reaction time,and correspondingly,the existing time of nitric oxide in the flue gas is also shortened,but the peak value of nitric oxide rises,during the process of O_(2) concentration changing from 1% to 9%,the peak NO concentration in the flue gas increased from 5.4×10^(-5) to 1.05×10^(-4).An increase in O_(2) concentration greatly reduces the total reduction of NO and the minimum change in NO *** peak NO concentration during the combustion process of corn stalk is 4.56×10^(-4),which is approximately 7 times higher than that of coal,and it is caused by the high amount of N in corn *** addition of raw meal has an inhibitory effect on the reduction of NO:after adding raw meal,the effective reduction time of NO by fuel decreased by about 20%,but adding raw meal raises CO_(2) concentration of fuel gas in the early stage of reaction.

关键词： cement precalciner biomass fuel coal NO reduction co-firing