检索结果-南通市图书馆

Strengthening Mechanism and Microstructure of Deformable Ti Particles Reinforced AZ91 Composite

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2022年第12期35卷 1935-1945页

作者： Biao Tang Jian-Bo Li Jun-Liu Ye Huan Luo yi-tao wang Bo Guan Yang-Fan Lu Xian-Hua Chen Kai-Hong Zheng Fu-Sheng Pan School of Materials Science and Engineering Chongqing UniversityChongqing 400044China International Joint Laboratory for Light Alloys(MOE) School of Materials Science and EngineeringChongqing UniversityChongqing 400044China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

In this study,the deformable titanium(Ti)particles reinforced AZ91 composite was successfully prepared by powder metallurgy and subsequent *** mechanical properties and microstructural evolution of pure AZ91 and 5 Ti/AZ91 composite were *** yield strength,ultimate tensile strength,and elongation of 5 Ti/AZ91 composite are measured to be 212 MPa,323 MPa,and 10.1%,*** analysis revealed that Ti particles are elongated along the extrusion direction,forming a discontinuous strip Ti particles,fine precipitated Mg_(17)Al_(12) phase inhibits dynamic recrystallization(DRX)behavior through Zener pinning effect and hinders the growth of matrix grains,resulting in refiner grains of 5 Ti/AZ91 *** deformed Ti particles and magnesium(Mg)matrix to generate additional heterogeneous deformation-induced(HDI)*** deformation-induced strengthening mainly contributed to the increment of yield strength for 5 Ti/AZ91 composite.

关键词： Magnesium matrix composites Tiparticles Recrystallization Mechanical properties Heterogeneous deformation

Progress of Studies on Traditional Chinese Medicine Based on Complex Network Analysis

在线全文

学校读者我要写书评

暂无评论

World Journal of Traditional Chinese Medicine 2017年第3期3卷 28-37页

作者： Qian-Ru Zhang Xiang-Jun Kong Hai-Yu Xu yi-tao wang Yuan-Jia Hu Specialty Committee on Network Pharmacology World Federation of Chinese Medicine Societies State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of Macao Institute of Chinese Materia Medica China Academy of Chinese Medical Sciences

Traditional Chinese medicine(TCM) is a distinct medical system that deals with the life-health-disease-environment relationship using holistic, dynamic, and dialectical thinking. However, reductionism has often restricted the conventional studies on TCM, and these studies did not investigate the central concepts of TCM theory about the multiple relationships among life, health, disease, and environment. Complex network analysis describes a wide variety of complex systems in the real world, and it has the potential to bridge the gap between TCM and modern science owing to the holism of TCM theory. This article summarizes the current research involving TCM network analysis and highlights the computational tools and analysis methods involved in this research. Finally, to inspire a new approach, the article discussed the potential problems underlying the application of TCM network analysis.

关键词： Complex network analysis formula mechanism syndrome traditional Chinese medicine

Probing quantum causality with geometric asymmetry in spatial-temporal correlations

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第9期67卷 294-305页

作者： Yu MENG Zheng-Hao LIU Zhikuan ZHAO Peng yiN yi-tao wang Wei LIU Zhi-Peng LI Yuan-Ze YANG Zhao-An wang Jin-Shi XU Shang YU Jian-Shun TANG Chuan-Feng LI Guang-Can GUO CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Department of Computer Science Eidgen?ssische Technische Hochschule Zürich Hefei National Laboratory Department of Physics Imperial College London Research Center for Quantum Sensing Zhejiang Lab

Causation promotes the understanding of correlation to an advanced stage by elucidating its underlying mechanism. Although statisticians have specified the possible causal relations among correlations,inferring causal structures is impossible from only the observed correlations in the classical world. Quantum correlations encapsulating the most defining aspects of quantum physics have taken a new turn for the causal inference problem — the two-point spatial and temporal quantum correlations with observationally discernible characteristics correspond exactly to the two most basic causal structures. However, a direct causal interpretation for quantum correlations has only been established in very limited cases. Here, we explore to what extent quantum correlations promote causal inference. Theoretically, we have found that the distinguishable causal regime of two-point Pauli correlations can be expanded from a single value to an asymmetric interval, and the causal structures determining the quantum correlations can be interpreted by a simple distance criterion. Experimentally, we have devised and implemented a versatile non-unital quantum channel in an optical architecture to directly observe such an asymmetric interval. The setup enabled quantum causal inference without any requirement of active intervention, which is impossible in the classical realm. Our work facilitates the identification of causal links among quantum variables and provides insight into characterizing causation and spatial-temporal correlation in quantum mechanics.

关键词： causality quantum information quantum channel channel-state duality non-unital channel

Experimental demonstration of tight duality relation in three-path interferometer

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2020年第5期29卷 119-124页

作者： Zhi-Jin Ke Yu Meng yi-tao wang Shang Yu Wei Liu Zhi-Peng Li Hang wang Qiang Li Jin-Shi Xu Jian-Shun Tang Chuan-Feng Li Guang-Can Guo CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center For Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

Bohr’s principle of complementarity has a long history and it is an important topic in quantum theory,among which the famous example is the duality *** relation between visibilityC and distinguishability D,C2+D2≤1,has long been recognized as the only representative of the duality ***,recent researches have shown that this inequality is not good enough because it is not tight for multipath ***,a tight bound for the multipath interferometer has been put *** we design and experimentally implement a three-path interferometer coupling with path indicator *** wave property of photons is characterized by l1-norm coherence measure,and the particle property is based on distinguishability of the indicator *** new duality relation of the three-path interferometer is demonstrated in our experiment,which bounds the union of a right triangle and a part of elliptical area inside the quadrant of a unit *** analysis confirms that the new bound is tight for photons in three-path interferometers.

关键词： duality relation multi-path interferometer principle of complementarity foundations of quantum mechanics

DISCOVERY OF LATENT STRUCTURES: EXPERIENCE WITH THE COIL CHALLENGE 2000 DATA SET

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2008年第2期21卷 172-183页

作者： Nevin L.ZHANG Department of Computer Science and Engineering The Hong Kong University of Science and Technology

The authors present a case study to demonstrate the possibility of discovering complex and interesting latent structures using hierarchical latent class （HLC） models. A similar effort was made earlier by Zhang （2002）, but that study involved only small applications with 4 or 5 observed variables and no more than 2 latent variables due to the lack of efficient learning algorithms. Significant progress has been made since then on algorithmic research, and it is now possible to learn HLC models with dozens of observed variables. This allows us to demonstrate the benefits of HLC models more convincingly than before. The authors have successfully analyzed the CoIL Challenge 2000 data set using HLC models. The model obtained consists of 22 latent variables, and its structure is intuitively appealing. It is exciting to know that such a large and meaningful latent structure can be automatically inferred from data.

关键词： Bayesian networks case study latent structure discovery learning.

Detection and quantification of entanglement with measurement-device-independent and universal entanglement witness

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2020年第8期29卷 143-150页

作者： Zhi-Jin Ke yi-tao wang Shang Yu Wei Liu Yu Meng Zhi-Peng Li Hang wang Qiang Li Jin-Shi Xu Ya Xiao Jian-Shun Tang Chuan-Feng Li Guang-Can Guo CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center For Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Department of Physics Ocean University of ChinaQingdao 266100China

Entanglement is the key resource in quantum information processing,and an entanglement witness(EW)is designed to detect whether a quantum system has any ***,prior knowledge of the target states should be known first to design a suitable EW,which weakens this ***,a recent theory shows that it is possible to design a universal entanglement witness(UEW)to detect negative-partial-transpose(NPT)entanglement in unknown bipartite states with measurement-device-independent(MDI)*** outcome of a UEW can also be upgraded to be an entanglement *** this study,we experimentally design and realize an MDI UEW for two-qubit entangled *** of the tested states are well-detected without any prior *** also show that it is able to quantify entanglement by comparing it with concurrence estimated through state *** relation between them is also *** entire experimental framework ensures that the UEW is MDI.

关键词： entanglement witness entanglement detection entanglement quantification measurement-deviceindependent

A von-Neumann-like photonic processor and its application in studying quantum signature of chaos

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第4期13卷 672-681页

作者： Shang Yu Wei Liu Si-Jing tao Zhi-Peng Li yi-tao wang Zhi-Peng Zhong Raj BPatel Yu Meng Yuan-Ze Yang Zhao-An wang Nai-Jie Guo Xiao-Dong Zeng Zhe Chen Liang Xu Ning Zhang Xiao Liu Mu Yang Wen-Hao Zhang Zong-Quan Zhou Jin-Shi Xu Jian-Shun Tang Yong-Jian Han Chuan-Feng Li Guang-Can Guo CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China. CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China. Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China. Research Center for Quantum Sensing Zhejiang LabHangzhou 310000China. Quantum Optics and Laser Science Blackett LaboratoryImperial College LondonPrince Consort RdLondon SW72AZUK. Clarendon Laboratory Department of PhysicsOxford UniversityParks Road OX13PUOxfordUK

Photonic quantum computation plays an important role and offers unique *** decades after the milestone work of Knill-Laflamme-Milburn,various architectures of photonic processors have been proposed,and quantum advantage over classical computers has also been *** is now the opportune time to apply this technology to real-world ***,at current technology level,this aim is restricted by either programmability in bulk optics or loss in integrated optics for the existing architectures of processors,for which the resource cost is also a *** we present a von-Neumann-like architecture based on temporal-mode encoding and looped structure on table,which is capable of multimode-universal programmability,resource-efficiency,phasestability and *** order to illustrate these merits,we execute two different programs with varying resource requirements on the same processor,to investigate quantum signature of chaos from two aspects:the signature behaviors exhibited in phase space(13 modes),and the Fermi golden rule which has not been experimentally studied in quantitative way before(26 modes).The maximal program contains an optical interferometer network with 1694 freely-adjustable *** current state-of-the-art,our architecture stands as the most promising candidate for real-world applications.

关键词： quantum signature chaos

Essential oil of Curcuma wenyujin induces apoptosis in human hepatoma cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2008年第27期14卷 4309-4318页

作者： YU Xiao Feng-Qing Yang Shao-Ping Li Guang Hu Simon Ming-Yuen Lee yi-tao wang State Drug Clinical Trial Agency Science & Technology Department Sichuan Provincial People's Hospital Sichuan Academy of Medical Science Chengdu 610072 Sichuan Province China Institute of Chinese Medical Sciences University of Macao Av. Padre Tomas Pereira S.J. Taipa Macao China Institute of Chinese Medicine the Chinese University of Hong Kong Hong Kong China

AIM: To investigate the effects of the essential oil of Curcuma wenyujin (CWO) on growth inhibition and on the induction of apoptosis in human HepG2 cancer cells. METHODS: The cytotoxic effect of drugs on HepG2 cells was measured by 3-(4,5-dimethylthiazol-2- yl)-2,5-diphenyltetra-zolium bromide (MTT) assay. DNA fragmentation was visualized by agarose gel electrophoresis. Cell cycle and mitochondrial transmembrane potential (△Ψm) were determined by flow cytometry (FCM). Cytochrome C immunostaining was evaluated by fluorescence microscopy. Caspase-3 enzymatic activity was assayed by the cleavage of Ac-DEVD-R110. Cleaved PARP and active caspase-3 protein levels were measured by FCM using BD? CBA Human Apoptosis Kit. RESULTS: Treatment with CWO inhibited the growth of HepG2 cells in a dose-dependent manner, and the IC50 of CWO was approximately 70 μg/mL. CWO was found to inhibit the growth of HepG2 cells by inducing a cell cycle arrest at S/G2. DNA fragmentation was evidentlyobserved at 70 μg/mL after 72 h of treatment. During the process, cytosolic HepG2 cytochrome C staining showed a markedly stronger green fluorescence than in control cells in a dose-dependent fashion, and CWO also caused mitochondrial transmembrane depolarization. Furthermore, the results clearly demonstrated that both, activity of caspase-3 enzyme and protein levels of cleaved PARP, significantly increased in a dose- dependent manner after treatment with CWO. CONCLUSION: CWO exhibits an antiproliferative effect in HepG2 cells by inducing apoptosis. This growth inhibition is associated with cell cycle arrest, cytochrome C translocation, caspase 3 activation, Poly- ADP-ribose polymerase (PARP) degradation, and loss of mitochondrial membrane potential. This process involves a mitochondria-caspase dependent apoptosis pathway. As apoptosis is an important anti-cancer therapeutic target, these results suggest a potential of CWO as a chemotherapeutic agent.

关键词： Essential oil Curcuma wenyujin, Apoptosis HepG2 Caspase-3 Mitochondrial Cytochrome C Cleaved Poly-ADP-ribose polymerase

Anti-proliferative Effects of Evodiamine in Resistant and Non-resistant Human Ovarian Cancer

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Anti-proliferative Effects of Evodiamine in Resistant and No...