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Preparation of Fe-As alloys by mechanical alloying and vacuum hot-pressed sintering:microstructure evolution,mechanical properties,and mechanisms

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Rare Metals 2024年第8期43卷 3876-3892页

作者： Fei Chai Fei-Ping Zhao Zhan Hu Shi-Yi Wen ben-Hammouda Samia Ze-Lin Fu Xin-Ting Lai Yan-Jie Liang Xiao-Bo Min Li-Yuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Institute of Environmental EngineeringCentral South UniversityChangsha 410083HunanChin State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Department of Building Civiland Environmental EngineeringConcordia UniversityMontreal H3G 1M8Canada

Arsenic materials have attracted great attention due to their unique ***,research concerning iron-arsenic(Fe-As) alloys is very scarce due to the volatility of As at low temperature and the high melting point of ***,a new Fe-As alloy was obtained by mechanical alloying(MA) followed by vacuum hot-pressed sintering(VHPS).Moreover,a systematic study was carried out on the microstructural evolution,phase composition,leaching toxicity of As,and physical and mechanical properties of Fe-As alloys with varying weight fractions of As(20%,25%,30%,35%,45%,55%,65%,and 75%).The results showed that pre-alloyed metallic powders(PAMPs) have a fine grain size and specific supersaturated solid solution after MA,which could effectively improve the mechanical properties of Fe-As alloys by VHPS.A high density(> 7.350 g·cm^(-3)),low toxicity,and excellent mechanical properties could be obtained for FeAs alloys sintered via VHPS by adding an appropriate amount of As,which is more valuable than commercial Fe-As *** Fe-25% As alloy with low toxicity and a relatively high density(7.635 g·cm^(-3)) provides an ultra-high compressive strength(1989.19 MPa),while the Fe-65% As alloy owns the maximum Vickers hardness(HVo.5 899.41).After leaching by the toxicity characteristic leaching procedure(TCLP),these alloys could still maintain good mechanical performance,and the strengthening mechanisms of Fe-As alloys before and after leaching were *** in the grain size,micro structure,and phase distribution induced significant differences in the compressive strength and hardness.

关键词： Mechanical alloying Vacuum hot-pressed sintering High-pressure Arsenic-iron alloys Mechanical properties

Experimental design of paraffin/methylated melamine-formaldehyde microencapsulated composite phase change material and the application in battery thermal management system

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Journal of Materials Science & Technology 2024年第2期169卷 124-136页

作者： Que Huang Silong Wang Jichun He Dengji Xu Safaa NAbdou Mohamed MIbrahim Shiqi Sun Yanjun Chen Handong Li ben Bin Xu Changcheng Liu Zeinhom M.El-Bahy Zhanhu Guo School of Environment and Safety Engineering North University of ChinaTaiyuan 030051China Institute of Advanced Energy Materials and Systems North University of ChinaTaiyuan 030051China School of Resources and Safety Engineering Central South UniversityChangsha 410010China School of Medical and BioInformation Engineering Northeastern UniversityShenyang 110819China Department of Chemistry Khurmah University CollegeTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle Upon Tyne NE18STUK College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt

In order to maintain the optimal operating temperature of the battery surface and meet the demand for thermal storage technology,battery thermal management system based on phase change materials has attracted increasing *** this work,a kind of core-shell structured microcapsule was synthesized by an in-situ polymerization,where paraffin was used as the core,while methanol was applied to mod-ify the melamine-formaldehyde shell to reduce toxicity and improve thermal ***,three different types of heat conductive fillers with the same content of 10 wt.%,i.e.,nano-Al_(2)O_(3),nano-ZnO and carbon nanotubes were added,generating *** microcapsules were uniform,and were not affected by the thermal fillers,which were evenly dispersed *** composite sample with carbon nanotubes(10 wt.%)showed the highest thermal conductivity of 0.50 W/(m K)and latent heat of 139.64 J/***,according to the leakage testing and battery charge/discharge experiments,compared with Al_(2)O_(3)and ZnO,the addition of carbon nanotubes remarkably enhances the heat storage ability as latent heat from 126.98 J/g for the prepared sample with Al_(2)O_(3)and 125.86 J/g for the one with ZnO,then to 139.64 J/g,as well as dissipation performance as a cooling effect by decreasing the sur-face temperature of battery from 2%to 12%of microcapsule,composite sample with carbon nanotubes presents a broad application prospect in battery thermal management system and energy storage field.

关键词： Microcapsule Phase change material Battery Carbon nanotube Safety

Fjord-Type AIEgens Based on Inherent Through-Space Conjugation

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CCS Chemistry 2024年第7期6卷 1739-1747页

作者： Ye-Qiang Han Yuan Xie Jianyu Zhang Shiyu Tan Haoke Zhang ben Zhong Tang Jonathan L.Sessler Feihe Huang Stoddart Institute of Molecular Science Department of ChemistryZhejiang UniversityHangzhou 310058 Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials ZJU-Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou 311215 MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310058 Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhen 518061 Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and TechnologyKowloonHong Kong 999077 School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhen(CUHK-Shenzhen)Guangzhou 518172 Department of Chemistry The University of Texas at AustinAustinTexas 78712-1224 Green Catalysis Center and College of Chemistry Zhengzhou UniversityZhengzhou 450001

Through-space conjugation(TSC)is a noncovalently electronic interaction that is emerging as a potential complement to through-bond conjugation(TBC)-based strategies for constructing luminescent ***,the design of efficient luminogens based on TSC is currently challenging due to a lack of established structure-property *** is particularly true in the case of luminogens displaying aggregation-induced emission(AIE)*** this work,three terphenyl derivatives were prepared,and their photophysical properties were systemically *** was found that relative to the corresponding m-and p-linked analogues,the electronic interaction of TBC is weakened while the strength of TSC is commensurately enhanced in the constitutional isomer containing an o-linked fjordtype *** this set of luminogens,the presence of a fjord-type arrangement promotes a transformation from aggregation-caused quenching to *** investigations involving congeneric quaterphenyl and pentphenyl isomers support the universality of the fjord-type unit as a framework for synthesizing AIE-active luminogens(AIEgens)with inherent *** work not only provides a novel set of AIEgens but also establishes the utility of TSC in controlling the photophysical properties of nonconventional and twisted luminogens.

关键词： fjord-type through-space conjugation through-bond conjugation aggregation-induced emission luminescence twisted conformation

由武劲向文雅:明清之际徽州宗族发展路径的内在转变——以歙县瞻淇汪氏四友堂支派为例

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安徽大学学报（哲学社会科学版） 2024年第3期48卷 11-22页

作者：汪奔安徽师范大学历史学院安徽芜湖241002

歙县瞻淇汪氏四友堂支派在明清之际迎来快速发展,凭借生员群体与科举入仕之风形成群体性人才优势。在明清之际的时势变迁大背景下,加之清初国家政策调整以及支派成员自身价值观念等因素,该支派发展路径由明末的武劲之风向清初的文雅之... 详细信息

歙县瞻淇汪氏四友堂支派在明清之际迎来快速发展,凭借生员群体与科举入仕之风形成群体性人才优势。在明清之际的时势变迁大背景下,加之清初国家政策调整以及支派成员自身价值观念等因素,该支派发展路径由明末的武劲之风向清初的文雅之风转变,从而在整体上不仅延续其在徽州本土社会既有的宗族地位与声望,同时也较为顺利地融入到侨寓地社会之中。与同时期江南士大夫家族相比,四友堂支派发展命运可谓共性与个性并存。明清之际徽州宗族发展转变体现在诸多层面,今后研究仍须将自上而下的王朝国家视角与自下而上的宗族成员个人视角相结合,从多维度剖析典型个案,以求对该阶段徽州宗族发展面貌的认识更为全面清晰。

关键词：明末清初徽州宗族发展路径武劲之风文雅之风瞻淇汪氏

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Genetic variant in a BaP-activated super-enhancer increases prostate cancer risk by promoting AhR-mediated FAM227A expression

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Journal of Biomedical Research 2024年第2期38卷 149-162,I0001-I0010页

作者： Lulu Fan Hao Wang Shuai ben Yifei Cheng Silu Chen Zhutao Ding Lingyan Zhao Shuwei Li Meilin Wang Gong Cheng Department of Environmental Genomics Jiangsu Key Laboratory of Cancer BiomarkersPrevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Department of Genetic Toxicology the Key Laboratory of Modern Toxicology of Ministry of EducationCenter for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Department of Urology the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China

Genetic variants in super-enhancers(SEs)are increasingly implicated as a disease risk-driving *** studies have reported an associations between benzo[a]pyrene(BaP)exposure and some malignant tumor ***,it is unclear whether BaP is involved in the effect of genetic variants in SEs on prostate cancer risk,nor the associated intrinsic molecular *** the current study,by using logistic regression analysis,we found that rs5750581T>C in 22q-SE was significantly associated with prostate cancer risk(odds ratio=1.26,P=7.61×10^(-5)).We also have found that the rs6001092T>G,in a high linkage disequilibrium with rs5750581T>C(r^(2)=0.98),is located in a regulatory aryl hydrocarbon receptor(AhR)motif and may interact with the FAM227A promoter in further bioinformatics *** then performed a series of functional and BaP acute exposure experiments to assess biological function of the genetic variant and the target ***,the rs6001092-G allele strengthened the transcription factor binding affinity to AhR,thereby upregulating FAM227A,especially upon exposure to BaP,which induced the malignant phenotypes of prostate *** current study highlights that AhR acts as an environmental sensor of BaP and is involved in the SE-mediated prostate cancer risk,which may provide new insights into the etiology of prostate cancer associated with the inherited SE variants under environmental carcinogen stressors.

关键词： super-enhancer prostate cancer genetic variants AhR BaP FAM227A

Neoadjuvant nivolumab with or without platinum-doublet chemotherapy based on PD-L1 expression in resectable NSCLC(CTONG1804):a multicenter open-label phase II study

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Signal Transduction and Targeted Therapy 2024年第1期9卷 249-258页

作者： Si-Yang Liu Song Dong Xue-Ning Yang Ri-Qiang Liao ben-Yuan Jiang Qun Wang Xiao-Song ben Gui-Bin Qiao Jun-Tao Lin Hong-Hong Yan Li-Xu Yan Qiang Nie Hai-Yan Tu Bin-Chao Wang Jin-Ji Yang Qing Zhou Hong-Rui Li Ke Liu Wendy Wu Si-Yang Maggie Liu Wen-Zhao Zhong Yi-Long Wu Guangdong Lung Cancer Institute Guangdong Provincial Key Laboratory of Translational Medicine in Lung CancerGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Thoracic Surgery Zhongshan HospitalFudan UniversityShanghaiChina Department of Thoracic Surgery Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Pathology Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Fujian Key Laboratory of Advanced Technology for Cancer Screening and Early Diagnosis FuzhouChina Berry Oncology Corporation FuzhouChina Chinese Thoracic Oncology Group(CTONG) GuangzhouChina Department of Hematology The First Affiliated HospitalJinan UniversityGuangzhouChina

This prospective multicenter phase II study evaluated the clinical efficacy of neoadjuvant nivolumab-exclusive(N)and nivolumab–chemotherapy(N/C)combinations based on PD-L1 *** patients exhibited resectable clinical stage IIA–IIIB(AJCC 8th edition)NSCLC without EGFR/ALK *** received either mono-nivolumab(N)or nivolumab+nabpaclitaxel+carboplatin(N/C)for three cycles based on PD-L1 *** primary endpoint was the major pathological response(MPR).Key secondary endpoints included the pathologic complete response(pCR),objective response rate(ORR),and event-free survival(EFS).Baseline PD-L1 expression and perioperative circulating tumor DNA(ctDNA)status were correlated with pCR and ***-two patients were enrolled,with 46 undergoing *** MPR was 50.0%(26/52),with 25.0%(13/52)achieving pCR,and 16.7%and 66.7%for patients with PD-L1≥50%in N and N/C groups,***(25.0%)patients experienced grade 3 or higher immune-related adverse events during neoadjuvant *** with post-neoadjuvant ctDNA negativity was more likely to have pCR(39.1%)compared with those remained positive(6.7%,odds ratio=6.14,95%CI 0.84-Inf,p=0.077).With a median follow-up of 25.1 months,the 18-month EFS rate was 64.8%(95%CI 51.9–81.0%).For patients with ctDNA–***+,the 18m-EFS rate was 93.8%vs 47.3%(HR,0.15;95%CI 0.04,0.94;p=0.005).Immunochemotherapy may serve as an optimal neoadjuvant treatment even for patients with PD-L1 expression≥50%.ctDNA negativity following neoadjuvant treatment and surgery could help identify superior pathological and survival benefits,which requires further confirmation in a prospective clinical trial(NCT04015778).

关键词： chemotherapy NSCLC treatment

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光量子精密测量研究进展(特邀)

中国激光 2024年第1期51卷 354-368页

作者：王犇张利剑南京大学现代工程与应用科学学院江苏南京210023 智能光传感与调控技术教育部重点实验室江苏南京210023 人工微结构科学与技术协同创新中心江苏南京210023 南京大学固体微结构物理国家重点实验室江苏南京210023

量子精密测量作为当代量子力学的主要应用方面之一,近些年来一直是量子科技的重要研究和发展方向。量子精密测量的主要研究目标是针对物理系统中的未知参数,利用量子资源进行量子增强测量,以提升参数测量精度。与其他物理系统相比,光子... 详细信息

量子精密测量作为当代量子力学的主要应用方面之一,近些年来一直是量子科技的重要研究和发展方向。量子精密测量的主要研究目标是针对物理系统中的未知参数,利用量子资源进行量子增强测量,以提升参数测量精度。与其他物理系统相比,光子系统具有相干时间长、不易受到环境干扰等优越性,因而常被用作量子信息处理的载体。以光子为基础的传感器提升传感精度是光量子精密测量的主要任务。介绍了量子精密测量的一般性原理,给出参数估计的量子极限精度下界。同时,介绍了目前光量子精密测量的理论与实验研究进展以及相应的挑战。

关键词：量子光学量子精密测量参数估计海森堡极限传感

Quasi-three-dimensional hydrodynamics of the corona region of laser irradiation of a slab

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Chinese Physics B 2024年第8期33卷 351-360页

作者：董晓梅关本金李英骏 State Key Laboratory for Tunnel Engineering China University of Mining and TechnologyBeijing 100083China

This paper introduces and establishes a quasi-three-dimensional physical model of the interaction between a laser and a slab *** contrast to previous one-dimensional analytical models,this paper innovatively fits the real laser conditions based on an isothermal,homogeneous expansion similarity solution of the ideal hydrodynamic *** this simple model,the evolution law and analytical formulae for key parameters(e.g.,temperature,density and scale length)in the corona region under certain conditions are *** analytical solutions agree well with the relevant results of computational hydrodynamics *** constant laser irradiation,the analytical solutions provide a meaningful power-law scaling *** model provides a set of mathematical and physical tools that give theoretical support for adjusting parameters in experiments.

关键词： plasma self-similarity method fluid dynamics calculations

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人与野生动物共存研究进展

生态学报 2024年第3期44卷 885-892页

作者：马奔雷硕中国人民大学环境学院北京100872 中国环境科学研究院生态研究所北京100012

人类和野生动物生存空间高度重叠,冲突不可避免,如何从冲突走向共存是学术研究的热点和难点。研究评述了人与野生动物共存的概念解析、量化评估、影响因素以及实现机制四方面的进展,发现人与野生动物共存的概念定义和量化评估还存在争... 详细信息

人类和野生动物生存空间高度重叠,冲突不可避免,如何从冲突走向共存是学术研究的热点和难点。研究评述了人与野生动物共存的概念解析、量化评估、影响因素以及实现机制四方面的进展,发现人与野生动物共存的概念定义和量化评估还存在争议。大多研究认为共存并不意味着没有冲突,而是不可避免的冲突被控制在可容忍范围内。研究多采用容忍度、接受度、保护态度和行为等变量对人与野生动物共存状态进行量化。野生动物相关的成本效益是影响人与野生动物共存的关键因素。经济和教育手段是实现共存的重要路径。经济手段包括补偿、保险、生态旅游、保护投资等措施,通过增加野生动物保护效益、减少保护成本可以实现共存。教育手段通过提升社区保护意识和野生动物保护效益感知、增强冲突应对能力实现人与野生动物共存。未来研究可以从生态和生计视角构建主客观相结合的指标体系对人与野生动物共存进行量化;基于社会生态系统框架识别影响人与野生动物共存的关键因素,总结实现共存的成功经验;采用实验经济学方法探索适用于本土的多样化共存干预措施组合。

关键词：人与野生动物共存容忍度成本效益经济手段