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Ternary layered boride moAlB:A novel thermo-regulation microwave absorbing ceramic material

Journal of Advanced Ceramics 2024年第5期13卷 699-710页

作者： Zhangjue Wang Fan Zhang Nannan Wang Wei Li Yongqiang Chen Hailong Wang rui Zhang Yanqiu Zhu Bingbing Fan School of material Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Academy of Sciences Zhengzhou 450046China State Key Laboratory of Featured metal materials and Life Cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Department of materials and Earth Sciences Technical University of DarmstadtDarmstadt 64287Germany School of material Science and Engineering Luoyang Institute of Science and TechnologyLuoyang 471023China Department of Engineering Faculty of EnvironmentScience and EconomyUniversity of ExeterExeter EX44QFUK

In the context of the fifth-generation(5G)smart era,the demand for electromagnetic wave(EmW)-absorbing materials has become increasingly prominent,so it is necessary to explore promising candidate *** work focuses on the exploration of the material absorbing properties of a moAlB mAB(mAB represents a promising group of alternatives,where m stands for a transition metal,A typically denotes Al,and B is boron)phase ***,the first-principles calculations were performed to reveal the unique crystal and layered structure of the moAlB ceramics and to predict their potential for use as an EmW absorption ***,a series of moAlB ceramics were synthesized at temperatures ranging from 800 to 1300℃,and the influence of temperature on the phase compositions and microstructures of the obtained moAlB ceramics was characterized and ***,the practical EmW absorption performance of the prepared moAlB ceramics was evaluated via a combination of experiments and radar cross-sectional *** moAlB sample synthesized at 900℃ exhibits superior EmW absorption performance,achieving an impressive minimum reflection loss(RL)of−50.33 *** unique layered structure and good electrical conductivity of the moAlB samples are the main reasons for their enhanced wave absorption performance,which provides interfacial polarization and multiple dielectric loss ***,this study not only contributes to the understanding of the preparation of moAlB materials but also provides potential guidance for their utilization in the realm of electromagnetic wave absorption.

关键词： moAlB electronic band structure electromagnetic wave(EmW)absorption layered ternary boride density of states

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problem-solving model guided by stimulus-organism-response theory:State of mind and coping styles of depressed mothers after cesarean delivery

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World Journal of psychiatry 2024年第6期14卷 945-953页

作者： rui-Fang Yuan mei-Qin Jiang Juan Li Jing-Jing Zhang Department of Gynecology and Obstetrics Jiangyin People's HospitalJiangyin 214400Jiangsu ProvinceChina Department of Gynecology The Fifth People's Hospital of WuxiWuxi 214000Jiangsu ProvinceChina Obstetrics and Gynecology Ward II Jiangnan University Affiliated HospitalWuxi 214131Jiangsu ProvinceChina

BACKGROUND The use of a problem-solving model guided by stimulus-organism-response(SOR)theory for women with postpartum depression after cesarean delivery may inform nursing interventions for women with postpartum *** To explore the state of mind and coping style of women with depression after cesarean delivery guided by SOR *** Eighty postpartum depressed women with cesarean delivery admitted to the hospital between January 2022 and October 2023 were selected and divided into two groups of 40 cases each,according to the random number table *** the control group,the observation group adopted the problem-solving nursing model under SOR *** two groups were consecutively intervened for 12 weeks,and the state of mind,coping styles,and degree of post-partum depression were analyzed at the end of the *** The Edinburgh postnatal Depression Scale and Hamilton Depression Scale-24-item scores of the observation group were lower than in the control group after care,and the level of improvement in the state of mind was higher than that of the control group(pping with illness in the observation group after care(26.48±3.35)was higher than that in the control group(21.73±3.20),and the level of avoidance(12.04±2.68)and submission(8.14±1.15)was lower than that in the control group(15.75±2.69 and 9.95±1.20),with significant differences(ppting the problem-solving nursing model using SOR theory for postpartum depressed mothers after cesarean delivery reduced maternal depression,improved their state of mind,and coping level with illness.

关键词： Stimulus-organism-response theory problem solving model Cesarean section postpartum depression

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In situ formed mg(BH_(4))_(2) for improving hydrolysis properties of mgH_(2)

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Journal of magnesium and Alloys 2024年第3期12卷 1204-1214页

作者： Yongyang Zhu mili Liu liming Zeng Yin Wang Daifeng Wu rui Li Qing Zhou Renheng Tang Fangming Xiao Institute of Resources Utilization and Rare Earth Development Guangdong Provincial Key Laboratory of Rare Earth Development and ApplicationGuangdong Academy of SciencesGuangzhou 510650China School of materials Science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510641China

The hydrolysis of mgH_(2) delivers high hydrogen capacity(15.2 wt%),which is very attractive for real-time hydrogen ***,the formation of a surface passivation mg(OH)_(2) layer and the large excess of H_(2)O required to ensure complete hydrolysis are two key challenges for the mgH_(2) hydrolysis ***,a low-cost method is reported to synthesize mgH_(2)@mg(BH_(4))_(2) composite via ball-milling mgH_(2) with cheap and widely available B_(2)O_(3)(or B(OH)_(3)).By adding small amounts of B_(2)O_(3),the in-situ formed mg(BH_(4))_(2) could significantly promote the hydrolysis of mgH_(2).In particular,the mgH_(2)–10 wt%B_(2)O_(3) composite releases 1330.7 mL·g^(−1) H_(2)(close to 80%theoretical hydrogen generation H_(2))in H_(2)O and 1520.4 mL·g^(−1) H_(2)(about 95%)in 0.5 m mgCl_(2) in 60 min at 26℃ with hydrolysis rate of 736.9 mL·g^(−1)·min^(−1) and 960.9 mL·g^(−1)·min^(−1) H_(2) during the first minute of the hydrolysis,*** addition,the mgCl_(2) solution allows repeated use by filtering and exhibits high cycle stability(20 cycles),therefore leading to much reduced capacity loss caused by the excess H_(2)*** show that by introducing B_(2)O_(3) and recycling the 0.5 m mgCl_(2) solution,the system hydrogen capacity can approach 5.9 wt%,providing a promising hydrogen generation scheme to supply hydrogen to the fuel cells.

关键词： Hydrolysis mgH_(2) mg(BH_(4))_(2) Hydrogen generation B_(2)O_(3) mgCl_(2)

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Flexible mille-feuille structure electromagnetic interference shielding film with excellent thermal conductivity and Joule heating

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Nano Research 2024年第5期17卷 4544-4554页

作者： Dingwen Yin Huijuan Xiu Simin Wang Yanfei pan Na Li rui Cheng Shaoyan Huang Sha Fan Jinbao Li College of Bioresources Chemical&materials Engineering Shaanxi University of Science&TechnologyXi'an 710021China National Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper DevelopmentXi'an 710021China College of material Science and Art Design Inner Mongolia Agricultural UniversityHohhot 010018China

The intelligent electronic devices have urgent demands for electromagnetic interference(EmI)shielding films with excellent heat dissipation ***,it is challenging to obtain excellent EmI shielding and thermal conductivity performances ***,inspired by mille-feuille structure,the multifunctional EmI shielding films developed by a layer-by-layer self-assembly and hot-pressing *** ingenious introduction of silver nanoparticles(AgNps)with large specific surface area and highly conductive into the network formed by TEmpO-oxidized cellulose nanofibrils(TOCNFs)with large aspect ratio to form the TOCNFs/*** the graphene nanoplates(GNps)with high conductivity loss distributed alternately with TOCNFs/AgNps to construct mille-feuille structure,which had highly efficient conductive network,complete thermally conduction pathway and rich heterogeneous ***,the designed films presented high electrical conductivity of 8520 S/cm,superb EmI effectiveness(SE)of 98.05 dB,and excellent thermal conductivity of 18.82 W/(m·K).Furthermore,the films possessed outstanding Joule heating performances with low voltages,including high heating temperature(100℃),fast response time(mpressive heating stability and ***,such high-performance EmI shielding films with fascinating thermal conductivity and Joule heating performances have substantial application in flexible electronics,electromagnetic waves shielding and thermal management.

关键词： TEmpO-oxidized cellulose nanofibrils/silver nanoparticles(TOCNFs/AgNps) mille-feuille structure electromagnetic interference shielding thermal conductivity Joule heating

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Enhancing Li-S battery performance via functional polymer binders for polysulfide inhibition

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Journal of Energy Chemistry 2024年第10期97卷 228-236页

作者： Jinpeng Jian Qian Chen Hao Sun rui Li Yaolin Hou Yulong Liu Jia Liu Haiming Xie Jiefang Zhu Nation & Local United Engineering Laboratory for power Batteries Faculty of Chemistry Northeast Normal University Jilin province Dongchi New Energy Technology Co. Ltd. Department of Chemistry-?ngstr?m Laboratory Uppsala University

The commercialization of lithium-sulfur(Li-S) batteries faces several challenges,including poor conductivity,unexpected volume expansion,and continuous sulfur loss from the cathode due to redox *** this study,we introduce a novel polymer via a simple cross-linking between poly(ether-thioureas)(pETU) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(pEDOT:pSS) as a bifunctio nal binder for Li-S batteries(devotes as "ppTU").Compared to polyvinylidene fluoride(pVDF),as-prepared ppTU exhibits significantly higher electrical conductivity,facilitating electrochemical ***,ppTU demonstrates effective adsorption of lithium polysulfides,leading to improved cycling stability by suppressing the shuttling *** investigate this behavior by monitoring morphological changes at the cell interface using synchrotron X-ray *** with ppTU binders exhibit remarkable rate performance,desired reversibility,and excellent cycling stability even under stringent bending and twisting *** work represents promising progress in functional polymer binder development for Li-S batteries.

关键词： Li-S batteries Bifunctional binders Electrode conductivity Shuttle effect

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preparation of crab-shell-based N,O co-doped graded porous carbon for supercapacitors using the confined nanospace deposition

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Waste Disposal and Sustainable Energy 2024年第2期6卷 173-183页

作者： Yiming Li Zhihao Yu mengyan Guo ming Zhang Jian Xiong Yina Qiao rui Zhang Xuebin Lu School of Environmental Science and Engineering Tianjin UniversityTianjin 30000China School of Ecology and Environment Tibet UniversityLhasa 850000China School of Environment and Safety Engineering North University of ChinaTaiyuan 030051China School of Environmental and municipal Engineering Tianjin Chengjian UniversityTianjin 300384China

Biomass-based carbon materials with hierarchical porous structures have attracted attention for their ability to provide more channels and shorten ion transport ***,we developed a simple method based on confined nanospace ***-ing high-temperature treatment,the mesoporous silica layer wrapped around the outside of the crab shells acted as a closed nanospace and effectively suppressed the severe deformation of the crab shell structure by shrinking *** prepared carbon material has a layered porous structure with abundant and stable N and O co-doping(N 7.32%,O 3.69%).The specific capacitance of the three-electrode system was 134.3 F/g at a current density of 0.5 A/g in a 6 mol/L KOH electrolyte,and the assembled aqueous symmetric supercapacitors exhibited an excellent cycling stability of 98.81%even after 5000 cycles.

关键词： Supercapacitor Confined nanospace deposition Biomass-based carbon materials Crab shell

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西南油气田CCUS/CCS发展现状、优势与挑战

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天然气工业 2024年第4期44卷 11-24,I0001页

作者：雍锐中国石油西南油气田公司

中国石油西南油气田公司(以下简称西南油气田)是中国西南地区首个天然气年产量超400×10^(8) m^(3)的油气生产企业,其天然气新建产能、产量的增量分别占到全国增量的1/4和1/3,预计2030年天然气开发的碳排放量将突破500×10^(4) t。为解... 详细信息

中国石油西南油气田公司(以下简称西南油气田)是中国西南地区首个天然气年产量超400×10^(8) m^(3)的油气生产企业,其天然气新建产能、产量的增量分别占到全国增量的1/4和1/3,预计2030年天然气开发的碳排放量将突破500×10^(4) t。为解决天然气高质量上产过程中碳排放量刚性增长的问题,西南油气田主动围绕“天然气+CCUS”的战略规划,积极部署CCUS/CCS工作,以期打造“绿色能源西南模式”,助力实现“双碳”目标。为此,系统阐述了西南油气田在CCUS/CCS业务规划、标准体系、技术系列等方面的发展现状,梳理了其CCUS/CCS业务在资源、技术方面的优势,并分析了面临的技术成熟度不高、经济效益缺乏、社会接受度不高等挑战,最后作出了展望并有针对性地提出了下一步建议:①攻关形成具有气田特色的CCUS/CCS技术体系,打造气田CCUS/CCS原创技术策源地;②建立气田CCUS/CCS标准体系,推广应用气田CO_(2)驱气提高采收率(CCUS-EGR)和CO_(2)埋存技术;③依托西南油气田自有碳捕集、输送、驱气、封存等技术,进一步延伸拓展传统油气主营业务产业链,建立西南片区CCUS/CCS产业集群和碳库,助力中国石油成为CCUS/CCS产业链链长;④探索页岩气注CO_(2)及混合气体提高采收率技术,支撑在页岩气领域开辟新的CCUS方向。

关键词：西南油气田 CCUS/CCS CCUS-EGR 封存技术发展战略天然气 “双碳”目标

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Arsenic and fluoride co-enrichment of groundwater in the loess areas and associated human health risks:A case study of Dali County in the Guanzhong Basin

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China Geology 2024年第3期7卷 445-459页

作者： rui-ping Liu Fei Liu Hua-qing Chen Yu-ting Yang Hua Zhu You-ning Xu Jian-gang Jiao Refaey m El-Wardany Xi'an Center China Geological SurveyMinistry of Natural ResourcesXi'an 710054China Observation and Research Station of Environmental Geology of Typical mines in Shaanxi province MNRXi'an 710054China Key Laboratory for Geo-hazards in Loess Area MNRXi'an 710054China Dalian Ocean and Fishery Comprehensive Administration Supervision Lochus Dalian 116000China pingliang City Development and Reform Commission Pingliang 744000China School of Earth Science and Resources Chang’an UniversityXi'an 710054China Faculty of Science Al-Azhar UniversityAssiut 71524Egypt

This study aims to reveal the occurrence and origin of typical groundwater with high arsenic and fluoride concentrations in the loess area of the Guanzhong Basin—a Neogene faulted *** findings are as follows:(1)Groundwater samples with high arsenic and fluoride concentrations collected from the loess area and the terraces of the Weihe River accounted for 26%and 30%,respectively,of the total samples,with primary hydrochemical type identified as HCO_(3)-*** karst and sand areas exhibit relatively high groundwater quality,serving as preferred sources for water *** is recommended that local governments fully harness groundwater in these areas;(2)groundwater with high arsenic and fluoride concentrations in the loess area and the alluvial plain of rivers in Dali County is primarily distributed within the Guanzhong Basin,which represents the drainage zone of groundwater;(3)arsenic and fluoride in groundwater originate principally from natural and anthropogenic sources;(4)the human health risk assessments reveal that long-term intake of groundwater with high arsenic and fluoride concentrations pose cancer or non-cancer risks,which are more serious to kids compared to *** study provides a theoretical basis for the prevention and treatment of groundwater with high arsenic and fluoride concentrations in loess areas.

关键词： Arsenic Fluoride Groundwater Cancer risk Kid and adult Human health risk assessment Hydrogeological survey engineering Environmental geological survey engineering Loess areas

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The Combination of Achnatherum inebrians Extracts and Soil microorganisms Inhibited Seed Germination and Seedling Growth in Elymus nutans

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phyton-International Journal of Experimental Botany 2024年第3期93卷 567-580页

作者： rui Zhang Taixiang Chen Zhenjiang Chen Hao Chen Xuekai Wei malik Kamran Chunjie Li State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems Key Laboratory of Animal Husbandry InnovationMinistry of Agriculture and Rural AffairsEngineering Research Center of Grassland AgricultureMinistry of EducationWest Gansu Province Prataculture Technology Innovation CenterCollege of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou730020China Center for Grassland Research National Forestry and Grassland AdministrationCaFBeijing100091China

In a greenhouse experiment,the effects of soil microorganisms and extracts of Achnatherum inebrians on the seed germination and seedling growth of Elymus nutans were *** results showed that both the extracts from aboveground and belowground parts of *** signiﬁcantly inhibited the germination rate,germination potential,germination index,vigor index,seedling height,root length,and fresh weight of ***,but increased malondialdehyde content,catalase,peroxidase and superoxide dismutase activity of *** seedlings(ppathy of aqueous extracts of the aboveground parts of *** was stronger than that of the *** extracts of the aboveground parts of *** decreased seed germination rate,germination potential,germination index,vigor index,seedling length,root length,and seedling fresh weight by 10.45%-74.63%,24.18%-32.50%,19.03%-73.36%,37.83%-88.41%,21.42%-53.14%,2.65%-40.21%,and 20.45%-61.36%,respectively,and malondialdehyde content,peroxidase,catalase,and superoxide dismutase activity increased by 8.09%-62.24%,27.83%-86.47%,22.90%-93.17%,and 11.15%-75.91%,*** above indexes were higher in live soil than in sterilized *** microorganisms increased the allelopathy of *** seed germination rate,germination potential,germination index,vigor index,seedling length,and seedling fresh weight of *** planted in live soil decreased by 8.22%-48.48%,10.00%-51.85%,8.19%-53.26%,16.43%-60.03%,12.91%-28.81%,and 9.09%-22.86%compared with sterilized soil,*** content,peroxidase,catalase,and superoxide dismutase activity of *** planted in live soil increased by 53.91%-81.06%,15.71%-57.34%,33.33%-86.31%,and 9.78%-52.51%compared with sterilized soil,*** existence of soil microorganisms enhanced the allelopathy of the secondary metabolites of ***.A combination of microorganisms and aqueous extracts from the aboveground parts of *** had the s

关键词： Achnatherum inebrians water immersion liquid aqueous leachate precipitate allelopathy Elymus nutans soil microorganisms

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Transcriptome sequencing reveals novel biomarkers and immune cell infiltration in esophageal tumorigenesis

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1500-1513页

作者： Jian-Rong Sun Dong-mei Chen Rong Huang rui-Tao Wang Li-Qun Jia School of Clinical medicine Beijing University of Chinese MedicineBeijing 100029China Integrated Chinese and Western medicine Oncology China-Japan Friendship HospitalBeijing 100029China

BACKGROUND Esophageal squamous cell carcinoma(ESCC)is one of the most common malignancies worldwide,and its development comprises a multistep process from intraepithelial neoplasia(IN)to carcinoma(CA).However,the critical regulators and underlying molecular mechanisms remain largely *** To explore the genes and infiltrating immune cells in the microenvironment that are associated with the multistage progression of ESCC to facilitate diagnosis and early *** A mouse model mimicking the multistage development of ESCC was established by providing warter containing 4-nitroquinoline 1-oxide(4NQO)to C57BL/6 ***,we established a control group without 4NQO treatment of ***,transcriptome sequencing was performed for esophageal tissues from patients with different pathological statuses,including low-grade IN(LGIN),high-grade IN(HGIN),and CA,and controlled normal tissue(NOR)*** expressed genes(DEGs)were identified in the LGIN,HGIN,and CA groups,and the biological functions of the DEGs were analyzed via Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment *** CIBERSORT algorithm was used to detect the pattern of immune cell ***(IHC)was also conducted to validate our ***,the Luminex multiplex cytokine analysis was utilized to measure the serum cytokine levels in the *** Compared with those in the NOR group,a total of 681541,and 840 DEGs were obtained in the LGIN,HGIN,and CA groups,*** the intersection of the three sets of DEGs,we identified 86 genes as key genes involved in the development of *** analysis revealed that these genes were enriched mainly in the keratinization,epidermal cell differentiation,and interleukin(IL)-17 signaling *** analysis revealed that,compared with those in the NOR group,m0 and m1 macrophages in the 4NQO group showed stronger infiltration,which was validated by *** cytok

关键词： Esophageal squamous cell carcinoma Intraepithelial neoplasia Tumorigenesis Transcriptome sequencing Biomarkers Immune cell infiltration 4-nitroquinoline 1-oxid

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