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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

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gas-propelled nanomotors alleviate colitis through the regulation of intestinal immunoenvironment-hematopexis-microbiota circuits

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2732-2747页

作者： Bo Xiao Yuqi liang ga Liu Lingshuang Wang zhan zhang Libin Qiu Haiting Xu Sean Carr Xiaoxiao Shi Rui LReis Subhas CKundu Zhenghua Zhu Department of gastroenterology the First Affiliated Hospital of Nanchang UniversityNanchang 330006China College of Sericulture Textileand Biomass SciencesSouthwest UniversityChongqing 400715China Department of Neurology School of MedicineEmory UniversityAtlantaGA 30322USA Atlanta Veterans Affairs Medical Center DecaturGA 30033USA Department of Surgery School of MedicineEmory UniversityAtlantaGA 30322USA Bs Research group I3Bs—Research Institute on BiomaterialsBiodegradables and BiomimeticsUniversity of MinhoHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineAveParkBarcoGuimaraes 4805-017Portugal

The progression of ulcerative colitis(UC)is associated with immunologic derangement,intestinal hemorrhage,and microbiota *** traditional medications mainly focus on mitigating inflammation,it remains challenging to address multiple ***,a versatile gas-propelled nanomotor was constructed by mild fusion of post-ultrasonic CaO_(2) nanospheres with Cu_(2)O *** resulting CaO_(2)–Cu_(2)O possessed a desirable diameter(291.3 nm)and a uniform size *** could be efficiently internalized by colonic epithelial cells and macrophages,scavenge intracellular reactive oxygen/nitrogen species,and alleviate immune reactions by pro-polarizing macrophages to the anti-inflammatory M2 *** nanomotor was found to penetrate through the mucus barrier and accumulate in the colitis mucosa due to the driving force of the generated oxygen *** administration of CaO_(2)–Cu_(2)O could stanch the bleeding,repair the disrupted colonic epithelial layer,and reduce the inflammatory responses through its interaction with the genes relevant to blood coagulation,anti-oxidation,wound healing,and ***,it restored intestinal microbiota balance by elevating the proportions of beneficial bacteria(e.g.,Odoribacter and Bifidobacterium)and decreasing the abundances of harmful bacteria(e.g.,Prevotellaceae and Helicobacter).Our gas-driven CaO_(2)–Cu_(2)O offers a promising therapeutic platform for robust treatment of UC via the rectal route.

关键词： Nanomotor Anti-inflammation Blood coagulation Immune regulation Hematopexis Microbiota rebalance Ulcerative colitis Rectal administration

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The activity and immune dynamics of PD-1 inhibition on high-risk pulmonary ground glass opacity lesions:insights from a single-arm,phase II trial

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2202-2214页

作者： Bo Cheng Caichen Li Jianfu Li Longlong gong Peng liang Ying Chen Shuting zhan Shan Xiong Ran Zhong Hengrui liang Yi Feng Runchen Wang Haixuan Wang Hongbo Zheng Jun Liu Chengzhi Zhou Wenlong Shao Yuan Qiu Jiancong Sun zhanhong Xie Zhu liang Chenglin Yang Xiuyu Cai Chunxia Su Wei Wang Jianxing He Wenhua liang Department of Thoracic Surgery and Oncology the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Institute of Respiratory HealthState Key Laboratory of Respiratory DiseaseNational Clinical Research Center for Respiratory DiseaseGuangzhouChina Medical Department Genecast Biotechnology Co.LtdWuxiChina Department of Radiation Oncology the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina Department of Respiratory Medicine the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Institute of Respiratory HealthState Key Laboratory of Respiratory DiseaseNational Clinical Research Center for Respiratory DiseaseGuangzhouChina Department of Cardiothoracic Surgery Affiliated Hospital of Guangdong Medical UniversityZhanjiangChina Department of Thoracic Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital&Shenzhen HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeShenzhenChina Department of VIP Inpatient Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaSun Yat-sen UniversityGuangzhouChina Department of Medical Oncology Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghaiChina

Immune checkpoint inhibitors targeting the programmed cell death-1(PD-1)protein significantly improve survival in patients with advanced non-small-cell lung cancer(NSCLC),but its impact on early-stage ground-glass opacity(ggO)lesions remains *** is a single-arm,phase II trial(NCT04026841)using Simon’s optimal two-stage design,of which 4 doses of sintilimab(200 mg per 3 weeks)were administrated in 36 enrolled multiple primary lung cancer(MPLC)patients with persistent high-risk(Lung-RADS category 4 or had progressed within 6 months)*** primary endpoint was objective response rate(ORR).T/B/NK-cell subpopulations,TCR-seq,cytokines,exosomal RNA,and multiplexed immunohistochemistry(mIHC)were monitored and compared between responders and ***,two intent-to-treat(ITT)lesions(pure-ggO or ggO-predominant)showed responses(ORR:5.6%,2/36),and no patients had progressive disease(PD).No grade 3-5 TRAEs *** total response rate considering two ITT lesions and three non-intent-to-treat(NITT)lesions(pure-solid or solid-predominant)was 13.9%(5/36).The proportion of CD8^(+)T cells,the ratio of CD8^(+)/CD4^(+),and the TCR clonality value were significantly higher in the peripheral blood of responders before treatment and decreased over ***,the mIHC analysis showed more CD8^(+)T cells infiltrated in ***,responders’cytokine concentrations of EgF and CTLA-4 increased during *** exosomal expression of fatty acid metabolism and oxidative phosphorylation gene signatures were down-regulated among ***,PD-1 inhibitor showed certain activity on high-risk pulmonary ggO lesions without safety *** effects were associated with specific T-cell re-distribution,EgF/CTLA-4 cytokine compensation,and regulation of metabolism pathways.

关键词： lesions metabolism doses

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Sorbitol-Electrolyte-Additive Based Reversible Zinc Electrochemistry

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电化学（中英文） 2024年第7期30卷 28-37页

作者： Qiong Sun Hai-Hui Du Tian-Jjiang Sun Dian-Tao Li Min Cheng Jing liang Hai-Xia Li zhan-liang Tao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin300071China Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life SciencesSuzhou University of Science and TechnologySuzhou 215009JiangsuChina

The unstable zinc(Zn)/electrolyte interfaces formed by undesired dendrites and parasitic side reactions greatly hinder the development of aqueous zinc ion ***,the hydroxy-rich sorbitol was used as an additive to reshape the solvation structure and modulate the interface *** strong interactions among sorbitol and both water molecules and Zn electrode can reduce the free water activity,optimize the solvation shell of water and Zn^(2+)ions,and regulate the formation of local water(H_(2)O)-poor environment on the surface of Zn electrode,which effectively inhibit the decomposition of water molecules,and thus,achieve the thermodynamically stable and highly reversible Zn *** a result,the assembled Zn/Zn symmetric cells with the sorbitol additive realized an excellent cycling life of 2000 h at 1 mA·cm^(-2)and 1 mAh·cm^(-2),and over 250 h at 5 ***^(-2)and 5 ***^(-2).Moreover,the Zn/Cu asymmetric cells with the sorbitol additive achieved a high Coulombic efficiency of 99.6%,obtaining a better performance than that with a pure 2 mol-L^(-1)ZnSO_(4)*** the constructed Zn/poly1,5-naphthalenediamine(PNDA)batteries could be stably discharged for 2300 cycles at 1 A g^(-1)with an excellent capacity retention *** result indicates that the addition of 1 mol-L^(-1)non-toxic sorbitol into a conventional ZnSO_(4)electrolyte can successfully protect the Zn anode interface by improving the electrochemical properties of Zn reversible deposition/decomposition,which greatly promotes its cycle performance,providing a new approach in future development of high performance aqueous Zn ion batteries.

关键词： Aqueous zinc ion batteries Dendrite Sorbitol additive Solvation regulation Interface modulation

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文学、文化与民族国家的难题

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开放时代 2024年第2期 114-123页

作者：梁展中国社会科学院外国文学研究所

一、20世纪文学与帝国和民族国家问题强世功老师从文明与帝国的关系入手,讲述了帝国在历史中的形态演变过程,以及古今之变如何重塑神圣帝国和世俗帝国的历史。强老师视野非常开阔,由法学讲到文学,由基督教文明、伊斯兰文明讲到儒家文明... 详细信息

一、20世纪文学与帝国和民族国家问题强世功老师从文明与帝国的关系入手,讲述了帝国在历史中的形态演变过程,以及古今之变如何重塑神圣帝国和世俗帝国的历史。强老师视野非常开阔,由法学讲到文学,由基督教文明、伊斯兰文明讲到儒家文明,讲到它们作为连接帝国内部不同族群和文明形态的纽带所发挥的政治和精神功能。谈到帝国,无论是古代意义上的区域型帝国,还是近代意义上的世俗帝国,都需要这样的精神纽带,文学和文化在其中扮演很重要的角色。

关键词：基督教文明伊斯兰文明儒家文明帝国形态演变 20世纪文学近代意义文明形态

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Molecular phylogenetic relationships based on mitochondrial genomes of novel deep-sea corals(Octocorallia:Alcyonacea):Insights into slow evolution and adaptation to extreme deep-sea environments

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Zoological Research 2024年第1期45卷 215-225页

作者： zhan-Fei Wei Kai-Wen Ta Nan-Nan zhang Shan-Shan Liu liang Meng Kai-Qiang Liu Chong-Yang Cai Xiao-Tong Peng Chang-Wei Shao National Key Laboratory of Mariculture Biobreeding and Sustainable goods Yellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdaoShandong 266071China BgI-Qingdao BGI-ShenzhenQingdaoShandong 266555China Institute of Deep-Sea Science and Engineering Chinese Academy of SciencesSanyaHainan 572000China

A total of 10 specimens of Alcyonacea corals were collected at depths ranging from 905 m to 1633 m by the manned submersible Shenhai Yongshi during two cruises in the South China Sea(SCS).Based on mitochondrial genomic characteristics,morphological examination,and sclerite scanning electron microscopy,the samples were categorized into four suborders(Calcaxonia,Holaxonia,Scleraxonia,and Stolonifera),and identified as 9 possible new cold-water coral *** of gC-skew dissimilarity,phylogenetic distance,and average nucleotide identity(ANI)revealed a slow evolutionary rate for the octocoral mitochondrial *** nonsynonymous(Ka)to synonymous(Ks)substitution ratio(Ka/Ks)suggested that the 14 protein-coding genes(PCgs)were under purifying selection,likely due to specific deep-sea environmental *** analysis of the median Ka/Ks values of five gene families and environmental factors indicated that the genes encoding cytochrome b(cyt b)and DNA mismatch repair protein(mutS)may be influenced by environmental factors in the context of deep-sea species *** study highlights the slow evolutionary pace and adaptive mechanisms of deep-sea corals.

关键词： Mitochondrial genome Alcyonacea Ka/Ks evolution Environmental factors

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Ternary NiCoTi-layered double hydroxide nanosheets as a pH-responsive nanoagent for photodynamic/chemodynamic synergistic therapy

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Fundamental Research 2024年第4期4卷 926-933页

作者： Tingting Hu zhan Zhou Jiajia Zha gareth RWilliams Zhikang Wu Wei Zhao Weicheng Shen Hai Li Xisheng Weng Ruizheng liang Chaoliang Tan State Key Laboratory of Chemical Resource Engineering Bejing Advanced Innovation Center for Soft Matter Science and EngineeringBejing University of Chemical TechnologyBeijing100029China College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China Department of Electrical Engineering City University of Hong KongHong Kong SAR 999077China UCL School of Pharmacy University College LondonLondon WCIN 1AXUnited Kingdom Institute of Advanced Materials(IAM)and Key Laboratory of Flexible Electronics(KLoFE) Nanjing Tech University(NanjingTech)Nanjing 211816China Department of Orthopedic Surgery State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China Center of Super-Diamond and Advanced Films(COSDAF) City University of Hong KongHong Kong SAR 999077China Shenzhen Research Institute City University of Hong KongShenzhen 518057China

Combining photodynamic therapy(PDT)with chemodynamic therapy(CDT)has been proven to be a promising strategy to improve the treatment efficiency of cancer,because of the synergistic therapeutic effect arising between the two ***,we report an inorganic nanoagent based on ternary NiCoTi-layered double hydroxide(NiCoTi-LDH)nanosheets to realize highly efficient photodynamic/chemodynamic synergistic *** NiCoTi-LDH nanosheets exhibit oxygen vacancy-promoted electron-hole separation and photogenerated holeinduced O_(2)-independent reactive oxygen species(ROS)generation under acidic circumstances,realizing in situ pH-responsive ***,due to the effective conversion between Co^(3+)and Co^(2+)caused by photogenerated electrons,the NiCoTi-LDH nanosheets catalyze the release of hydroxyl radicals(-OH)from H_(2)O_(2)through Fenton reactions,resulting in *** irradiation enhances the catalyzed ability of the NiCoTi-LDH nanosheets to promote the ROS generation,resulting in a better performance than TiO_(2)nanoparticles at pH *** vitro and in vivo experimental results show conclusively that NiCoTi-LDH nanosheets plus irradiation lead to efficient cell apoptosis and significant inhibition of tumor *** study reports a new pH-responsive inorganic nanoagent with oxygen vacancy-promoted photodynamic/chemodynamic synergistic performance,offering a potentially appealing clinical strategy for selective tumor elimination.

关键词： Layereddouble hydroxides Photodynamic therapy pH-responsive Chemodynamic therapy Oxygen vacancy

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2-APQC,a small-molecule activator of Sirtuin-3(SIRT3),alleviates myocardial hypertrophy and fibrosis by regulating mitochondrial homeostasis

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2748-2764页

作者： Fu Peng Minru Liao Wenke Jin Wei Liu Zixiang Li Zhichao Fan Ling Zou Siwei Chen Lingjuan Zhu Qian Zhao gu zhan liang Ouyang Cheng Peng Bo Han Jin zhang Leilei Fu West China School of Pharmacy and Department of Biotherapy Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs School of Life Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China State Key Laboratory of Southwestern Chinese Medicine Resources Hospital of Chengdu University of Traditional Chinese MedicineSchool of PharmacyChengdu University of Traditional Chinese MedicineChengdu 611137China School of Pharmaceutical Sciences Health Science CenterShenzhen UniversityShenzhen 518060China School of Traditional Chinese Materia Medica Key Laboratory of Structure-Based Drug Design&Discovery of Ministry of EducationShenyang Pharmaceutical UniversityShenyang 110016China

Sirtuin 3(SIRT3)is well known as a conserved nicotinamide adenine dinucleotide^(+)(NAD^(+))-dependent deacetylase located in the mitochondria that may regulate oxidative stress,catabolism and ATP *** evidence has recently revealed that SIRT3 plays its critical roles in cardiac fibrosis,myocardial fibrosis and even heart failure(HF),through its deacetylation ***,discovery of SIRT3 activators and elucidating their underlying mechanisms of HF should be urgently ***,we identified a new small-molecule activator of SIRT3(named 2-APQC)by the structure-based drug designing strategy.2-APQC was shown to alleviate isoproterenol(ISO)-induced cardiac hypertrophy and myocardial fibrosis in vitro and in vivo rat ***,in SIRT3 knockout mice,2-APQC could not relieve HF,suggesting that 2-APQC is dependent on SIRT3 for its protective ***,2-APQC was found to inhibit the mammalian target of rapamycin(mTOR)-p70 ribosomal protein S6 kinase(p70S6K),c-jun N-terminal kinase(JNK)and transforming growth factor-β(TgF-β)/small mother against decapentaplegic 3(Smad3)pathways to improve ISO-induced cardiac hypertrophy and myocardial *** upon RNA-seq analyses,we demonstrated that SIRT3-pyrroline-5-carboxylate reductase 1(PYCR1)axis was closely assoiated with *** activating PYCR1,2-APQC was shown to enhance mitochondrial proline metabolism,inhibited reactive oxygen species(ROS)-p38 mitogen activated protein kinase(p38MAPK)pathway and thereby protecting against ISO-induced mitochondrialoxidative ***,activation of SIRT3 by 2-APQC could facilitate AMP-activated protein kinase(AMPK)-Parkin axis to inhibit ISO-induced ***,our results demonstrate that 2-APQC is a targeted SIRT3 activator that alleviates myocardial hypertrophy and fibrosis by regulating mitochondrial homeostasis,which may provide a new clue on exploiting a promising drug candidate for the future HF therapeutics.

关键词： SIRT3 homeostasis metabolism

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10H2DA improves PCOS through autophagy-mediated mitochondrial fission dependent on the maintenance of calcium homeostasis between endoplasmic reticulum and mitochondria

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Food Science and Human Wellness 2024年

作者： Ji-Cheng Huang liang Yue Bai-Yu Li Zhi-Song Chen Yu-Si Wang zhan-Peng Yue Bin guo State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases， Key Laboratory for Zoonosis Research of the Ministry of Education， and College of Veterinary Medicine， Jilin University Reproductive Medical Center， the Second Hospital of Jilin University

Polycystic ovarian syndrome （PCOS） is the most principal reason for infertility in reproductive women， but no versatile treatment is feasible. Although trans-10-Hydroxy-2-decenoic acid （10H2DA） exhibits the anti-inflammatory， anti-cancerous and immunomodulatory properties， its role in improving PCOS remains elusive. This present study examined the effects of 10H2DA on the estrous cycle， ovarian morphology， reproductive hormone， glucose and insulin tolerances of PCOS mice， analyzed the binding between 10H2DA and free fatty acid receptor 4 （FFAR4）， and explored the regulation of 10H2DA on the c-Jun N-terminal kinase （JNK）/JUN （Jun proto-oncogene） signaling， cytosolic calcium ion (Ca2+)， endoplasmic reticulum （ER） Ca2+release， mitochondrial Ca2+， mitochondrial function， autophagy， lysosomal acidification， mitochondrial fission， secretion function and apoptosis of ovarian granulosa cells （gCs） using enzyme-linked immunosorbent assay， flow cytometry. western blotting， molecular docking， various fluorescent probes or plasmid， etc. The results found that 10H2DA alleviated the symptom of PCOS mice through improving the secretion dysfunction of gCs and protecting gCs against apoptosis. After binding to FFAR4 and inactivation of JNK/JUN signaling， 10H2DA restricted the release of ER Ca2+through targeting ryanodine receptors （RYRs） which had been identified as the downstream targets of JUN， diminished cytosolic Ca2+accumulation and prevented Ca2+influx into mitochondria via adjusting the mitochondrial calcium uptake 1 （MICU1） and mitochondrial calcium uniporter （MCU）. Concurrently， 10H2DA kept the integrity of mitochondrial function through maintaining mitochondrial Ca2+homeostasis and suppressed the discharge of mitochondrial reactive oxygen species （mtROS） into the cytosol through blocking the mitochondrial permeability transition pore opening to avoid the lipid peroxidation and ameliorate the secretory function and apoptosis of gCs. Furthermore， 10H2DA rescued the defective

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美国布什政府对韩国反美主义的认识与应对——基于美国解密档案的解读

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安徽史学 2024年第1期 108-117页

作者：詹德斌梁志上海对外经贸大学国际关系学系上海200336 华东师范大学历史学系上海200241

上世纪80年代的韩国是全球最反美的国家之一。美国解密档案显示,里根政府总体上对韩国的反美主义采取置若罔闻的态度,但继任的布什政府则不一样。由于布什一上台就计划访问韩国,所以如何应对反美主义一开始就进入了决策视野。美国在详... 详细信息

上世纪80年代的韩国是全球最反美的国家之一。美国解密档案显示,里根政府总体上对韩国的反美主义采取置若罔闻的态度,但继任的布什政府则不一样。由于布什一上台就计划访问韩国,所以如何应对反美主义一开始就进入了决策视野。美国在详细分析韩国反美主义产生的原因和发展趋势后,采取了一些针对性措施,包括公开阐明美国与光州事件无关,降低美国在韩国公众视野中的存在感,修改《驻韩美军地位协定》,移交韩军平时作战控制权,满足韩国虚荣心等。美国的举措在一段时间内和一定程度上缓和了韩国人的反美情绪,但显然未能从根本上化解这一问题。因为美国对韩国反美主义产生根源的认识并不深刻,也不愿公开承认反美主义主要是美国造成的,所以采取的政策措施不够彻底。这导致潜伏的反美情绪遇到适合的气候和土壤时又会重新出现。

关键词：韩国反美主义美韩同盟布什政府光州事件

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