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新型储能金属钒资源需求预测与供应分析

中国工程科学 2024年第3期26卷 74-85页

作者：陈仁凤龙涛陈其慎张艳飞邢佳韵刘敏王琨任鑫商铖红王晓中国地质科学院矿产资源研究所北京100032 中国地质大学(北京)地球科学与资源学院北京100089

随着全球太阳能、风能等新能源的快速发展,储能作为解决其发电间歇性等问题的必备设施,未来也将迎来爆发式增长。钒液流电池具有本征安全、全生命周期经济性好及环境友好等特点,且已具备产业化应用条件,在储能领域的重要性不断凸显。本... 详细信息

随着全球太阳能、风能等新能源的快速发展,储能作为解决其发电间歇性等问题的必备设施,未来也将迎来爆发式增长。钒液流电池具有本征安全、全生命周期经济性好及环境友好等特点,且已具备产业化应用条件,在储能领域的重要性不断凸显。本文分析了未来钒液流电池的发展趋势,设置了高速发展、参考和低速发展3种情景,结合钒液流电池单位钒用量,预测了未来不同情景下储能领域钒资源需求趋势。研究发现,未来钒资源需求将快速增长,尤其是在高增长情景下,全球2040年钒资源需求将较2021年增长276~338倍;分析全球钒资源的供应情况,认为随着钒液流电池的迅速发展,未来钒资源将供不应求。针对以上情况,研究提出:一是提高钒液流电池的技术研发力度;二是加大钒矿的地质勘查力度,积极探索新的钒矿资源;三是创新钒钛磁铁矿的提钒方法和技术,提高钒资源利用效率;四是加大钒资源的回收利用;五是重视境外钒钛磁铁矿的布局与开发。

关键词：电化学储能钒液流电池钒资源供应保障需求预测

长沙市白箬铺镇光明大观园景区儿童友好服务优化设计

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城市建筑 2024年第6期21卷 107-109页

作者：范佳朱宁徐嘉灵邓捷仁陶珑扶珍妮中南大学建筑与艺术学院湖南农业大学风景园林与艺术设计学院

白箬铺镇是长沙市两个儿童友好先行先试镇之一,文章结合当前白箬铺镇光明大观园景区现状问题,以儿童优化理念为指导,分别从IP定位、功能分区、活动策划三个方面对景区的服务设施进行优化设计,让儿童能充分感受景区的环境友好,提升他们... 详细信息

白箬铺镇是长沙市两个儿童友好先行先试镇之一,文章结合当前白箬铺镇光明大观园景区现状问题,以儿童优化理念为指导,分别从IP定位、功能分区、活动策划三个方面对景区的服务设施进行优化设计,让儿童能充分感受景区的环境友好,提升他们对儿童乐园氛围的感知能力,为光明大观园景区的转型升级奠定基础。

关键词：儿童友好光明大观园景区优化设计

原花青素B2通过miR⁃499⁃5p促进骨骼肌慢肌纤维基因的表达

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西南民族大学学报（自然科学版） 2024年第3期50卷 259-267页

作者：龙青焘王文静陈本莉徐孟刁慧西南民族大学青藏高原动物遗传资源保护与利用教育部重点实验室四川成都610041 西南民族大学动物科学国家民委重点实验室四川成都610041 四川省畜牧科学研究院动物遗传育种四川省重点实验室四川成都610066 四川省畜科集团有限公司畜禽生物制品四川省重点实验室四川成都610066

旨在探究原花青素B2(Proanthocyanidins B2,PB2)是否通过miR⁃499⁃5p调控骨骼肌慢肌纤维基因的表达.在小鼠C2C12细胞和猪骨骼肌卫星细胞诱导分化形成肌管后,分别向肌管中添加0μg/mL、2.5μg/mL、5μg/mL和10μg/mL的PB2,探究不同浓度PB... 详细信息

旨在探究原花青素B2(Proanthocyanidins B2,PB2)是否通过miR⁃499⁃5p调控骨骼肌慢肌纤维基因的表达.在小鼠C2C12细胞和猪骨骼肌卫星细胞诱导分化形成肌管后,分别向肌管中添加0μg/mL、2.5μg/mL、5μg/mL和10μg/mL的PB2,探究不同浓度PB2对慢肌纤维基因表达的影响.在机制研究试验中,分别向C2C12肌管和猪肌管中添加10μg/mL的PB2,同时转染200 nM的miR⁃499⁃5p inhibitor抑制miR⁃499⁃5p的表达.结果表明,不同添加剂量的PB2均可促进C2C12肌管MyHC I基因的表达(P<0.05);添加5μg/mL和10μg/mL的PB2显著增加猪肌管MyHC I基因的表达(P<0.05);添加5μg/mL和10μg/mL的PB2上调C2C12肌管和猪肌管miR⁃499⁃5p的表达水平(P<0.05).机制研究发现,抑制miR⁃499⁃5p解除了PB2对miR⁃499⁃5p、MyHC I mRNA和慢型MyHC蛋白表达的促进作用.以上研究表明,PB2可以通过miR⁃499⁃5p促进骨骼肌慢肌纤维基因的表达.

关键词：慢肌纤维基因原花青素B2 miR⁃499⁃5p

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Study of the multi-physics field-coupled model of the two-stage electrostatic precipitator

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Building Simulation 2024年第3期17卷 387-398页

作者： Wenjia Hao Yu Guo Yukun Wang tao Yu Hao Gao Zhengwei long Tianjin Key Laboratory of Indoor Air Environmental Quality Control School of Environmental Science and EngineeringTianjin UniversityWeijin Road 92Tianjin300072China Wuhan Second Ship Design and Research Institute WuhanChin

The two-stage electrostatic precipitator is widely used to purify oil mist ***,there is limited research on the influences of relative humidity,particle deposition characteristics,and the generation of gaseous ***,this paper established a numerical model of the electrostatic oil mist purifier and applied it to a two-stage electrostatic *** the model was used to investigate the corona discharge characteristics under different relative humidity conditions in the charged zone,the particle deposition characteristics,the purification efficiency,the ozone concentration distribution,and the oil vapor concentration distribution in the collection *** results indicate that,with a constant temperature,the corona current decreases as relative humidity increase,and there is a quadratic relationship between relative humidity and *** variation in relative humidity has little impact on the purification *** maximum ozone concentration occurs near the electrode line,and its concentration is influenced by the discharge current and inlet airflow *** oil vapor concentration reaches its maximum value at the side plates,with a value of 19 ppb,while it reaches the minimum value at the collecting zone electrode plate,with a value of 2 *** temperature is the main factor affecting the volatilization of the oil film,with higher temperatures resulting in higher oil vapor.

关键词： two-stage ESPs particle deposition corona discharge oil vapor

Disposal of zinc extraction residues via iron ore sintering process:an innovative resource utilization

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Journal of Iron and Steel Research International 2024年第7期31卷 1636-1645页

作者： Chun-long Fan Cheng-yi Ding tao Yang Yun-fei Luo Yi-fan Wang Qian Li Hong-ming long School of Metallurgical Engineering Anhui University of TechnologyMa'anshan 243002AnhuiChina Zhongye Changtian International Engineering Co. Ltd.Changsha 410205HunanChina Key Laboratory of Metallurgical Emission Reduction and Resources Recycling(Ministry of Education) Anhui University of TechnologyMa'anshan 243002AnhuiChina

Zinc extraction residue,a solid waste generated from the treatment of zinc-containing dust in rotary kilns,is commonly stockpiled in steel companies for extended *** poses significant disposal challenges and environmental pollution *** far,research on the treatment of zinc extraction residues has been slow,inadequate,and *** this gap,a novel approach was proposed to effectively treat the zinc extraction residue via the iron ore sintering *** was feasible to add 1 wt.%of zinc extraction residues to the sintering raw *** more adequate mineralization reaction resulted in higher yield and tumbler indexes,despite a slight decrease in sintering *** this may result in a slight decrease in sintering speed,the more complete mineralization reaction leads to improved sintering yield and tumbler ***,the addition of zinc extraction residues reduced the CO and NO_(x) concentrations in the sintering flue ***,the iron ore sintering process provided a viable solution for resource utilization and environmentally friendly treatment of zinc extraction residues.

关键词： Zinc extraction residue Iron ore sintering Co-processing Waste utilization Gas pollutant reduction

Exponentially modified Gaussian relevance to the distributions of translocation events in nanopore-based single molecule detection

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Chinese Chemical Letters 2014年第7期25卷 1029-1032页

作者： Zhen Gu Yi-Lun Ying Bing-Yong Yan Hui-Feng Wang Pin-Gang He Yi-tao long Department of Chemistry East China Normal University Key Laboratory for Advanced Materials & Department of Chemistry East China University of Science and Technology School of Information Science and Engineering East China University of Science and Technology

Nanopore technique plays an important role in single molecule detection, which illuminates the properties of an individual molecule by analyzing the blockage durations and currents. However, the traditional exponential function is lack of efficiency to describe the distributions of blockage durations in nanopore experiments. Herein, we introduced an exponentially modified Gaussian （EMG） function to fit the duration histograms of both simulated events and experimental events. In comparison with the traditional exponential function, our results demonstrated that the EMG provides a better fit while covers the entire range of the distributions. In particular, the fitted parameters of EMG could be directly used to discriminate the sequence length of the oligonucleotides at single molecule level.

关键词： Nanopore Single-molecule detection Exponentially modified Gaussian

Close-packed layer spacing as a practical guideline for structure symmetry manipulation of IV-VI/I-V-VI_(2) thermoelectrics

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InfoMat 2024年第2期6卷 99-106页

作者： tao Jin long Yang Xinyue Zhang Wen Li Yanzhong Pei Interdisciplinary Materials Research Center School of Materials Science and EngineeringTongji UniversityShanghaithe People's Republic of China

The crystal-structure symmetry in real space can be inherited in the reciprocal space,making high-symmetry materials the top candidates for thermoelectrics due to their potential for significant electronic band degeneracy.A practical indicator that can quantitatively describe structural changes would help facilitate the advanced thermoelectric material *** face-centered cubic structures,the spatial environment of the same crystallographic plane family is isotropic,such that the distances between the close-packed layers can be derived from the atomic distances within the *** by this,the relationship between inter-and intra-layer geometric information can be used to compare crystal structures with their desired cubic *** close-packed layer spacing was found to be a practical guideline of crystal structure symmetry in IV-VI chalcogenides and I-V-VI_(2) ternary semiconductors,both of which are historically important *** continuous structural evolution toward high symmetry can be described by the layer spacing when temperature or/and composition change,which is demonstrated by a series of pristine and alloyed thermoelectric materials in this *** layerspacing-based guideline provides a quantitative pathway for manipulating crystal structures to improve the electrical and thermal properties of thermoelectric materials.

关键词： phase transition structure manipulation thermoelectric materials x-ray diffraction

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青年原发性高血压病中医证型与相关因素分析

中国中西医结合杂志 2024年第9期44卷 1063-1071页

作者：李晓雅张静怡胡岚清孙长鑫张晓囡陈纪烨刘龙涛中国中医科学院西苑医院心血管科北京100091 国家中医心血管病临床医学研究中心北京100091 北京中医药大学研究生院北京100029

目的探讨青年原发性高血压病中医证型与相关因素间的关系。方法采用横断面研究设计,收集2017年12月—2021年12月中国中医科学院西苑医院心血管科住院患者中符合纳排标准的病例资料,通过Logistic回归分析方法探讨相关关系。结果研究共纳... 详细信息

目的探讨青年原发性高血压病中医证型与相关因素间的关系。方法采用横断面研究设计,收集2017年12月—2021年12月中国中医科学院西苑医院心血管科住院患者中符合纳排标准的病例资料,通过Logistic回归分析方法探讨相关关系。结果研究共纳入202例青年高血压病住院病例,中医证型分布依次为痰瘀互结证(51.98%)、阴虚阳亢证(24.75%)、气血两虚证(15.84%)、肾阳亏虚证(7.43%)。Logistic回归分析显示,脑梗死病史、高血压病分期、低密度脂蛋白胆固醇(LDL-C)水平、24 h平均收缩压(24 h ASBP)、24 h平均脉搏(24 h AP)、日间平均脉搏(dAP)、夜间平均脉搏(n AP)对气血两虚证有影响(P<0.05);高血压病分期、脂蛋白B(Apo B)水平、最高收缩压(max-SBP)对肾阳亏虚证有影响(P<0.05);脂肪肝病史、高密度脂蛋白胆固醇(HDL-C)降低、LDL-C升高、糖化血红蛋白(HbA1c)升高、估算肾小球滤过率(eGFR)降低、24 h AP、dAP对痰瘀互结证有影响(P<0.05);年龄、动脉粥样硬化、LDL-C降低、Apo B降低、HbA1c升高、夜间平均舒张压(nADBP)、舒张压时间升高百分比(PTE%-DBP)对阴虚阳亢证有影响(P<0.05)。结论青年高血压病住院患者中痰瘀互结证最多,中医证型与年龄、既往史、高血压病分期、相关血清学指标及动态血压指标之间存在一定的相关关系。

关键词：青年高血压病中医证型相关因素 Logistic回归分析中西医结合

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Immediate implantation of ultrafine fiber slow-release system based on cell electrospinning to induce osteogenesis of mesenchymal stem cells

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Regenerative Biomaterials 2024年第2期3卷 76-87页

作者： tao Lu long Yang Zhuoyang Li Yin Liu Shun'en Xu Chuan Ye Department of Orthopaedics The Affliated Hospital of Guizhou Medical UniversityGuiyang 550004China Department of Orthopaedics The First People's Hospital of GuiyangGuiyang 550004China Center for Tissue Engineering and Stem Cell Research Guizhou Medical UniversityGuiyang 550004China Department of Otolaryngology Head and Neck Surgery Xinqiao HospitalArmy Medical University(Third Military Medical University)Chongqing 400037China Department of Dental implant Stomatological Hospital of GuiyangGuiyang 550000China

This study presents the development and evaluation of a poly(3-hydroxybutyrate-co-4-hydroxybutyrate)(P34HB)ultrafine fiber slow-release system for in vivo osteogenic induction of human umbilical cord mesenchymal stem cells(HUCMSCs).Utilizing dual-nozzle and cell electrospinning techniques,the system encapsulates L-ascorbic acid-2-phosphate magnesium(AsP),βB-glycerophosphate sodium and dexamethasone(DEX)within the'fbers,ensuring sustained osteogenic *** scaffold's morphology,characterization,hydrophilicity,mechanical properties and cellular behavior were *** subcutaneous implantation in rabbits was con-ducted to observe its ectopic osteogenic induction *** fabricated P34HB ultrafine fiber slow-release *** ization *** distribution of HUCMSCs and inducing components within the scaffold,with no chemical reactions affecting the active *** vitro tests showcased a prolonged release of DEX and ASP,while biocompatibility assays highlighted the scaffold's suitability for cellular *** Red,type I collagen,and osteopontin(OPN)staining verifed the scaffold's potent osteogenic induction effect on ***,immediate implantation into New Zealand White rabbits led to significant new bone formation within 8 *** findings underscore the system's potential for immediate in vivo implantation without prior in vitro induction,marking a promising advancement in bone tissue engineering.

关键词： bone tissue engineering cell electrospinning in vivo induction immediate implantation biomaterials