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Microstructure and properties of LZQT600-3 HCCDIBs for plunger pump cylinder

china Foundry 2024年第2期21卷 197-204页

作者： Chun-jie Xu yuan-ying Jin Dong Ma Zhen Zhao Jia-wei Qi Shang Sui Xiang-{{2. Wu Can Guo Zhong-ming Zhang Yong-hui Liu Dan Shechtman School of Materials Science and Engineering Xi'an University of TechnologyXi'an 710048China Xi'an Shechtman Nobel Prize New Materials Institute Xi'an 710048China Tongchuan Huazhu Precision Technology Co. Ltd.Tongchuan 727100ShaanxiChina Faculty of Materials Science and Engineering Technion-Israel Insititue of TechnologyHaifa 3200003Israel

It is important to improve the comprehensive performance of the ductile iron bars(DIBs)for the cylinder block of the extra high pressure hydraulic plunger pump and accelerate the industrial *** this work,the LZQT600-3 DIBs with the diameter of 145 mm were prepared by the horizontal continuous casting(HCC)process,that is,LZQT600-3 *** microstructure and room temperature tensile properties of different sections[left-edge(surface layer),left-1/2.(left half of the radius),and the center of the HCCDIBs]were *** results show that the spheroidization of LZQT600-3 HCCDIBs matrix from the left-edge,left-1/2. to the center is at nodulizing grade II and *** the cooling rate gradually decreases from surface to the center of the HCCIBs,the number of spheroidized graphite is gradually reduced,the size is gradually increased,the shape factor is decreased,and the pearlite content and lamellate spacing are *** the horizontal direction of the section,the hardness of the material is distributed symmetrically around the center of the *** the vertical direction,the hardness distribution in the center of the HCCDIBs is asymmetrical due to the gravity during the solidification ***,the microstructure in the lower part of the section solidifies relatively *** left-edge has the best tensile mechanical properties,and the ultimate tensile strength,yield tensile strength and elongation are 597.3 MPa,418.5 MPa and 9.6%,*** tensile fracture belongs to the ductile-brittle hybrid *** comprehensive performances of LZQT600-3 HCCDIBs meet the actual application requirements of ultra-high pressure hydraulic plunger pump cylinder.

关键词： horizontal continuous casting(HCC) nodular cast iron ductile iron bars microstructure mechanical properties

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Excess Activity Tuned by Distorted Tetrahedron in CoMoO_(4) for Oxygen Evolution

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Energy & Environmental Materials 2024年第1期7卷 247-252页

作者： Hengbo Xiao Kai Chi Hongxia yin Xiangji Zhou Pengxiang Lei Peizhi Liu Jiakun Fang Xiuhong Li Songliu yuan Zhen Zhang Yaqiong Su Junjie Guo Lihua Qian School of Physics Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Material Chemistry for Energy Conversion and Storage School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Chemistry and Chemical Engineering Hubei University of TechnologyWuhan 430068China Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China State Key Lab of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Mechanical Engineering Hubei University of TechnologyWuhan 430068China Department of Stomatology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430074China School of Chemistry Xi'an Jiaotong UniversityXi'an 710049China

Oxygen vacancies enable modulating surface reconstruction of transition metal oxides containing metal-oxygen polyhedrons into metallic oxyhydroxide for oxygen evolution reaction(OER),while revealing reconstructing mechanism is stuck by the requirement to precisely control exact sites of these ***,oxygen vacancies are localized only within MoO_(4)tetrahedrons rather than CoO_(6)octahedrons in CoMoO_(4)catalyst,guaranteeing coherent reconstruction of CoO_(6)octahedrons into pure CoOOH with tunable activities for ***,distorted tetrahedron accelerates the dissolution of Mo atoms into alkaline electrolyte,triggering spontaneous transition of partial CoMoO_(4)into Co(OH)_(2..CoO_(6)octahedrons in both CoMoO_(4)and Co(OH)_(2.can transform pure CoOOH completely at lower potential,resulting in excess intrinsic activity whose summit is identified by overpotential at 10 mA cm^(-2.with 2..9%reduction and Tafel slope with 65.3%***-defined manipulation over the distorted polyhedrons offers one versatile knob to precisely modulate electronic structure of oxide catalysts with outstanding OER performance.

关键词： metal-oxygen polyhedron oxygen evolution reaction oxygen vacancy Raman spectroscopy

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Weak Morrey spaces and strong solutions to the Navier-Stokes equations

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Science china Mathematics 2007年第10期50卷 1401-1417页

作者： Chang-xing MIAO~(1+) Bao-quan yuan~{2.~1 Institute of Applied Physics and Computational Mathematics,P.O.Box 8009,Beijing 100088,{{2. ~{2.College of Mathematics and Informatics,Henan Polytechnic university,Jiaozuo 454000,{{2. Institute of Applied Physics and Computational Mathematics Beijing China College of Mathematics and Informatics Henan Polytechnic University Jiaozuo China

We consider the Cauchy problem of Navier-Stokes equations in weak Morrey *** first define a class of weak Morrey type spaces M_(p,λ)~*(R^n)on the basis of Lorentz space L_(p,∞)=L_p~*(R^n) (in particular,M_(?)~*(R^n)=L_(p,∞),if p>1),and study some fundamental properties of them;Second, we prove that the heat operator U(t)= e^(tΔ)and Calderón-Zygmund singular integral operators are bounded linear operators on weak Morrey spaces,and establish the bilinear estimate in weak Morrey ***,by means of Kato's method and the contraction mapping principle,we prove that the Cauchy problem of Navier-Stokes equations in weak Morrey spaces M_(p,λ)~*(R^n)(1

关键词： Navier-Stokes equations, weak Morrey spaces, Lorentz spaces, Cauchy problem,time-global well-posedness, self-similar solutions

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Beating the Fault-Tolerance Bound and Security Loopholes for Byzantine Agreement with a quantum Solution

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Research 2024年第3期2023卷 445-455页

作者： Chen-Xun Weng Rui-Qi Gao Yu Bao Bing-Hong Li Wen-Bo Liu yuan-Mei Xie Yu-Shuo Lu Hua-Lei yin Zeng-Bing Chen National Laboratory of Solid State Microstructures and School of Physics Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices Key Laboratory of Quantum State Construction and Manipulation(Ministry of Education)Renmin University of ChinaBeijing 100872China.

Byzantine agreement,the underlying core of blockchain,aims to make every node in a decentralized network reach *** Byzantine agreements unavoidably face two major *** is 1/3 fault-tolerance bound,which means that the system to tolerate f malicious players requires at least 3f+1 *** other is the security loopholes from its classical cryptography ***,we propose a Byzantine agreement framework with unconditional security to break this bound with nearly 1/2.fault tolerance due to multiparty correlation provided by {2.tum digital *** is intriguing that {2.tum entanglement is not necessary to break the 1/3 fault-tolerance bound,and we show that weaker correlation,such as asymmetric relationship of {2.tum digital signature,can also *** work strictly obeys two Byzantine conditions and can be extended to any number of players without requirements for multiparticle *** experimentally demonstrate three-party and five-party consensus for a digital *** work indicates the {2.tum advantage in terms of consensus problems and suggests an important avenue for {2.tum blockchain and {2.tum consensus networks.

关键词： methods. quantum signature

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Evaporative Condensers in Comfortable Air Conditioning System

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湖南大学学报（自然科学版） 2009年第S1期36卷 136-140页

作者： yin ying-de1,ZHU Dong-sheng1,DU Gui-mei{2.LI {{2.-xi1,SUN He-jing1,LIU Qing-ming1(1.Key Lab of Enhancement Heat Transfer and Energy Conservation,the Ministry of Education,South china {2. of Technology,Guangzhou,Guangdong 510641,china {2.College of Civil Engineering,Hunan {2.,Changsha,Hunan 41008{2.china) Key Lab. of Enhancement Heat Transfer and Energy Conservation South China University of Technology Guangzhou 510641 China College of Civil Engineering Hunan University Changsha 410082 China

The operating theory of an evaporative condenser was *** difference between an evaporative condensing refrigeration system and a general refrigeration system was *** with the air-cooled and the water-cooled,the virtues of energy-conservation and water-conservation of evaporative condensers were *** questions existing in the application of evaporative condensers were pointed out,the corresponding solving methods were analyzed accordingly,and the development trend of evaporative condensing technique in mechanical refrigeration system field and the applied foreground of evaporative condensers in comfortable air conditioning were prospected.

关键词： evaporative condensers evaporative condensing refrigeration system general refrigeration system comfortable air conditioning system

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Identification of Key Blood Biomarkers Linking Di(2.ethylhexyl)Phthalate and Autoimmune Diseases in Adolescents Mice

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Biomedical and Environmental Sciences 2024年第5期37卷 521-525页

作者： XU Xiao Mei LI Xiao Lu HU Die CAI Xiao Yue LI Qi Meng ZHENG yuan Zhuo CAI Yang QI yin yin XU Tao ZHAO Ling Li NING Xia Department of Infectious Diseases Anhui Provincial Children’s HospitalHefei 231000AnhuiChina Department of Toxicology School of Public HealthKey Laboratory of Environmental Toxicology of Anhui Higher Education InstitutesAnhui Medical UniversityHefei 231000AnhuiChina School of Biology Food and EnvironmentHefei UniversityHefei 230601AnhuiChina

Di(2.ethylhexyl)phthalate(DEHP)is a widely used plasticizer known for its reproductive developmental and immune system toxicity,mainly through esophagal,dermal,and respiratory exposure^([1-3]).Maternal exposure to DEHP during pregnancy can lead to adverse birth outcomes in offspring,including impacts on the thyroid system of adolescent offspring^([2.4]).

关键词： Blood respiratory pregnancy

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Aggregation-Induced Catalysis: Asymmetric Catalysis with Chiral Aggregates

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Research 2024年第1期2023卷 525-532页

作者： Yao Tang Yu Wang Qingkai yuan Sai Zhang Jia-yin Wang Shengzhou Jin Ting Xu Junyi Pan Kazimierz Surowiec Guigen Li Department of Chemistry and Biochemistry Texas Tech UniversityLubbockTX 79409-1061USA School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China School of Pharmacy Continuous Flow Engineering Laboratory of National Petroleum and Chemical IndustryChangzhou UniversityChangzhouJiangsu 213164China

So far,there have been 4 methods to control chirality including the use of chiral auxiliaries,reagents,solvents,and catalysts documented in literature and *** them,asymmetric catalysts are normally divided into homogeneous and heterogeneous *** this report,we present a new type of asymmetric control—asymmetric catalysis via chiral aggregates that would not belong to the above *** new strategy is represented by catalytic asymmetric dihydroxylation reaction of olefins in which chiral ligands are aggregated by taking advantage of typical aggregation-induced emission systems containing tetrahydrofuran and H_(2.O *** was proven that the chiral induction can be enhanced from er of 78:2. to 97:3 simply by changing the ratios of these 2.cosolvents.

关键词： chiral asymmetric Chiral

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用交叉梁系比拟求解正交各向异性薄板弯曲问题

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应用数学和力学 2024年第5期45卷 518-528页

作者：袁全袁驷清华大学土木工程系北京100084

采用交叉梁系结构比拟求解正交各向异性薄板结构,给出了两种结构在静力分析和自由振动分析中的相容性条件;对于满足相容性条件且仅含有简支和固支组合边界的相容问题,论证了其解答随着交叉梁系网格加密可收敛到正交各向异性板的理论解.... 详细信息

采用交叉梁系结构比拟求解正交各向异性薄板结构,给出了两种结构在静力分析和自由振动分析中的相容性条件;对于满足相容性条件且仅含有简支和固支组合边界的相容问题,论证了其解答随着交叉梁系网格加密可收敛到正交各向异性板的理论解.进一步建立了所有类型内力的计算公式,并给出了采用3D结构力学求解器求解的算法实施和数值算例(包括矩形板和圆形板问题),用以验证理论分析的正确性.

关键词：交叉梁系正交各向异性薄板相容性条件 3D结构力学求解器数值计算

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Beyond the Gut:The intratumoral microbiome’s influence on tumorigenesis and treatment response

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Cancer Communications 2024年第10期44卷 1130-1167页

作者： Hao Zhang Li Fu Xinwen Leiliang Chunrun Qu Wantao Wu Rong Wen Ning Huang Qiuguang He quan Cheng Guodong Liu yuan Cheng Department of Neurosurgery The Second Affiliated HospitalChongqing Medical UniversityChongqingP.R.China Department of Gastroenterology The Second Affiliated HospitalChongqing Medical UniversityChongqingP.R.China Department of Neurosurgery Xiangya HospitalCentral South UniversityChangshaHunanP.R.China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunanP.R.China Department of Oncology Xiangya HospitalCentral South UniversityChangshaHunanP.R.China

The intratumoral microbiome(TM)refers to the microorganisms in the tumor tissues,including bacteria,fungi,viruses,and so on,and is distinct from the gut microbiome and circulating *** is strongly associated with tumorigenesis,progression,metastasis,and response to *** paper highlights the current status of *** sources,adjacent normal tissue,circulatory system,and concomitant tumor co-metastasis are the main origin of *** advanced techniques in TM analysis are comprehensively ***,TMis involved in tumor progression through several mechanisms,including DNA damage,activation of oncogenic signaling pathways(phosphoinositide 3-kinase[PI3K],signal transducer and activator of transcription[STAT],WNT/β-catenin,and extracellular regulated protein kinases[ERK]),influence of cytokines and induce inflammatory responses,and interaction with the tumor microenvironment(anti-tumor immunity,pro-tumor immunity,and microbial-derived metabolites).Moreover,promising directions of TM in tumor therapy include immunotherapy,chemotherapy,radiotherapy,the application of probiotics/prebiotics/synbiotics,fecal microbiome transplantation,engineered microbiota,phage therapy,and oncolytic virus *** inherent challenges of clinical application are also *** review provides a comprehensive landscape for analyzing TM,especially the TM-related mechanisms and TM-based treatment in cancer.

关键词： analysis methods immunotherapy intratumoral microbiome treatment application tumorpromotive and tumor-suppressive mechanisms

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Leptin-mediated suppression of lipoprotein lipase cleavage enhances lipid uptake and facilitates lymph node metastasis in gastric cancer

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Cancer Communications 2024年第8期44卷 855-878页

作者： Jian Xiao Shuqing Cao Jiawei Wang Pengyu Li quan Cheng Xinyi Zhou Jiacheng Dong yuan Li Xinyu Zhao Zekuan Xu Li Yang Department of General Surgery The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuP.R.China

Background:Lymph node metastasis(LNM)is the primary mode of metastasis in gastric cancer(GC).However,the precise mechanisms underlying this process remain *** cells necessitate lipid metabolic reprogramming to facilitate metastasis,yet the role of lipoprotein lipase(LPL),a pivotal enzyme involved in exogenous lipid uptake,remains uncertain in tumor ***,the aim of this study was to investigate the presence of lipid metabolic reprogramming during LNM of GC as well as the role of LPL in this ***:Intracellular lipid levels were quantified using oil red O staining,BODIPY 493/503 staining,and flow *** analysis was employed to identify alterations in intracellular lipid composition following LPL *** expression levels were assessed through immunohistochemistry,Western blotting,and enzyme-linked immunosorbent *** mouse popliteal LNM model was utilized to investigate differences in *** and mass spectrometry were employed to examine protein *** vitro phosphorylation assays and Phos-tag sodium dodecyl-sulfate polyacrylamide gel electrophoresis assays were conducted to detect angiopoietin-like protein 4(ANGPTL4)***:We identified that an elevated intracellular lipid level represents a crucial characteristic of node-positive(N+)GC and further demonstrated that a high-fat diet can expedite *** was found to be significantly overexpressed in N+GC tissues and shown to facilitate LNM by mediating dietary lipid uptake within GC ***,an obesity-related hormone,intercepted the effect exerted by ANGPTL4/Furin on LPL *** leptin binding to the leptin receptor could induce the activation of inositol-requiring enzyme-1(IRE1)kinase,leading to the phosphorylation of ANGPTL4 at the serine 30 residue and subsequently reducing its binding affinity with ***,our research revealed that LPL disrupted lipid homeostasis by elevating intrace

关键词： angiopoietin-like protein 4 leptin lipoprotein lipase lymph node metastasis prostaglandin E2

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