检索结果-南通市图书馆

Controlling complex, non-linear dynamical networks

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2014年第3期1卷 339-341页

作者： ying-cheng Lai School of Electrical Computer and Energy Engineering Arizona State University

INTRODUCTION An outstanding problem in the ield of complex dynamical systems is to control non-linear dynamics on complex ***,the physical world in which we live is non-linear,and complex networks are ubiquitous in a ... 详细信息

关键词： work net Controlling complex non-linear dynamical networks

Fruit fly research in China

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2018年第11期45卷 583-592页

作者： ying cheng Dahua Chen State Key Laboratory of Membrane Biology Institute of Zoology Chinese Academy of Sciences

Served as a model organism over a century, fruit fly has significantly pushed forward the development of global scientific research, including in China. The high similarity in genomic features between fruit fly and human enables this tiny insect to benefit the biomedical studies of human diseases. In the past decades, Chinese biologists have used fruit fly to make numerous achievements on understanding the fundamental questions in many diverse areas of biology. Here, we review some of the recent fruit fly studies in China, and mainly focus on those studies in the fields of stem cell biology, cancer therapy and regeneration medicine, neurological disorders and epigenetics.

关键词： China Development Epigenetics Fruit fly Genetics Neurology Signaling pathway

Perspectives on relativistic quantum chaos

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2020年第4期72卷 112-137页

作者： Liang Huang ying-cheng Lai School of Physical Science and Technology and Key Laboratory for Magnetism and Magnetic Materials of MOELanzhou UniversityLanzhouGansu 730000China School of Electrical Computerand Energy EngineeringArizona State UniversityTempeAZ 85287United States of America Department of Physics Arizona State UniversityTempeAZ 85287United States of America

Quantum Chaos has been investigated for about a half *** is an old yet vigorous interdisciplinary field with new concepts and interesting topics emerging *** years have witnessed a growing interest in quantum chaos in relativistic quantum systems,leading to the still developing field of relativistic quantum *** purpose of this paper is not to provide a thorough review of this area,but rather to outline the basics and introduce the key concepts and methods in a concise way.A few representative topics are discussed,which may help the readers to quickly grasp the essentials of relativistic quantum chaos.A brief overview of the general topics in quantum chaos has also been provided with rich references.

关键词： quantum chaos relativistic quantum systems Dirac billiards

Matched glass-to-Kovar seals in N_2 and Ar atmospheres

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2013年第9期20卷 874-882页

作者： cheng-hsien Kuo Pi-ying cheng Chang-pin Chou Department of Mechanical Engineering Chiao Tung University

The oxidation of Kovar alloy was investigated, the wetting and spreading behavior of hard and soft glasses on Kovar alloy were studed by using the sessile drop method, and the quality and the seal strength of glass-Kovar seals were tested. The experimental results indicated that the preoxidation of Kovar alloy for approximately 10 min at 700℃ in air resulted in excellent adherence in glass-Kovar seals. The wetting and spreading behavior of glass on preoxidized Kovar alloy were superior to that on nonoxidized Kovar alloy. The wetting ability of ASF110 glass, at 950℃ and 980℃ in Ar and N2 atmospheres, was significantly superior to that of ASF200R and ASF700 glasses. The seal quality of the glass-preoxidized Kovar seal was superior to that of the glass-nonoxidized Kovar seal. The shear strength of the ASFll0 glass-preoxidized Kovar seal, which was prepared at 980℃ for 20 min in an Ar atmosphere, was approximately 3.9 MPa.

关键词： Kovar alloy glass sealing argon nitrogen oxidation wetting

The Effect of Glycation of CD59 on Complement-Mediated Cytolysis

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2005年第4期2卷 313-317页

作者： ying cheng Meihua Gao Department of Immunology Medical College of Qingdao University Qingdao Shandong China

Vascular proliferation is one of the major causes for morbidity and mortality in diabetes. However, the cellular and molecular mechanisms that link hyperglycemia to this complication remain unclear. In present study, we demonstrated by site-directed mutagenesis that mutated CD59 was more susceptible to glycation-inactivation for hyperglycemia. Mutated and wild-type CD59s were stably expressed in Chinese hamster ovary cells using the pALTER-MAX mammalian expression vector. Western blot, FACS and immunological fluorescence were conducted to confirm that CD59s were tethered to the plasma membrane. Compared to wild-type CD59, human CD59 mutants led to a significant increase in dye release assay. These results indicate that there may be some mutations of CD59 in diabetes population and the mutated CD59, which is more likely to be of glycation than the wild-type, may help to explain the distinct propensity of diabetes subjects to develop vascular proliferation complications.

关键词： CD59 site-directed mutagenesis eukaryotic expression vector

YC-1 exerts inhibitory effects on MDA-MB-468 breast cancer cells by targeting EGFR in vitro and in vivo under normoxic condition

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer 2012年第5期31卷 248-256页

作者： ying cheng Wei Li ying Liu Huan-Chen cheng Jun Ma Lin Qiu Jilin Tumor Hospital ChangchunJilin 130012P.R.China Harbin Institute of Hematology and Tumor HarbinHeilongjiang 150010P.R.China

3-(5'-hydroxymethyl-2'-furyl)-1-benzyl indazole(YC-1),the hypoxia-inducible factor-1 alpha(HIF-1α) inhibitor,suppresses tumor proliferation and metastasis by down-regulating HIF-1α expression under hypoxic *** previous studies demonstrated that YC-1 inhibited breast cancer cell proliferation under normoxic *** the current study,we investigated the targets of YC-1 and mechanism of its action in MDA-MB-468 breast cancer *** the in vitro experiments,we found that YC-1 significantly inhibited MDA-MB-468 cell proliferation in normoxia and *** normoxic conditions,YC-1 induced apoptosis of MDA-MB-468 cells and blocked cell cycle in the G1 phase,and these effects were possibly related to caspase 8,p21,and p27 ***-PCR and Western blotting results showed that YC-1 primarily inhibited HIF-1α at the mRNA and protein levels under hypoxic conditions,but suppressed the expression of epidermal growth factor receptor(EGFR) at the mRNA and protein levels under normoxic *** vivo,YC-1 prolonged survival,increased survival rate,decreased tumor size and metastasis rate,and inhibited tissue EGFR and HIF-1α ***,YC-1 exerted no obvious effect on body *** results indicate that YC-1 inhibits the proliferation of MDA-MB-468 cells by acting on multiple targets with minimal side ***,YC-1 is a promising target drug for breast cancer.

关键词：缺氧诱导因子-1α 表皮生长因子受体乳腺癌细胞体外实验体内 Western印迹 HIF-1 细胞增殖

Characterization of submicron aerosol particles in winter at Albany,New York

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2022年第1期34卷 118-129页

作者： Xiuli Wei Huaqiao Gui Jianguo Liu ying cheng Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Science and Technology of China Hefei 230031China

A thorough understanding of chemical composition,particle pH,and pollutant emissions is essential to address the climate and human health effects of atmospheric *** this study,we used a High-Resolution Time-of-Flight Aerosol Mass Spectrometer(HR-ToF-AMS)and Scanning Mobility Particle Sizer(SMPS)to characterize the composition of submicron ***,we applied the ISORROPIA-II model to analyze the particle acidity effect on the compositional characterization of submicron particles from December 22,2016 to January 7,2017 in Albany,New York,*** results indicated that aerosols with mobility diameter from SMPS in the range 200–400 nm were the main contributors to the mass during the measurement *** dominance of organics(47%)and sulfate(16%)was similar to previous observations in the eastern United States in Winter 2015,while the fraction of nitrate(23%)was much ***,nitrate could easily form at colder temperatures and lower RH levels even when there were more acidic particle periods during the measurement period in *** ISORROPIA-II model indicated that there were more acidic particles,which was estimated using pH *** temperature conditions tended to favor nitrate *** nitrate concentration exceeded that of sulfate in the measurement period,even though the SO2and NOxemissions were *** organics in submicron particles were strongly influenced by the local emissions in ***,the inorganic compounds in submicron particles could be derived from regional transport as their pollution sources originated from different *** may help strategize emission reductions in the future.

关键词： Submicron particles Chemical composition Particle pH HR-ToF-AMS ISORRPIA-II model

Relay Selection Strategy in the Secure Cooperative Communications System

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2017年第3期15卷 271-276页

作者： Hsin-ying Liang cheng-ying Yang Wei-Liang Wu Department of Information and Communication Engineering Chaoyang University of Technology Taichung 41349 Department of Computer Science University of Taipei Taipei 11153 Department of Mathematics University of Taipei Taipei 11153

With the low cost and low hardware complex considerations,cooperative systems are a tendency in the future *** work considers the secure cooperative communications *** a practical situation in the system,the scenario includes multiple source stations,multiple relay stations,multiple destination stations,and *** analyze the optimal relay selection in the system,we begin with the performance analysis for a single source station and a single destination *** applying two cooperative models,the amplify-andforward（AF） mode and decode-and-forward（DF）mode,the secrecy capacity is ***,we apply the derived results to the considered environment to find the optimal relay *** the way,the relay selection can be obtained by the exhaustive search ***,there are a lot of steps needed if the number of source stations is ***,applying the characters of the cooperative modes in the relay selection,the pre-selection step is proposed with a mathematical *** could be used for the practical situation without a long-time calculation.

关键词： Index Terms--Amplify-and-forward (AF) mode,exhaustive search method fixed decode-and-forward(DF) mode mutual information relay selection secrecycapacity secure cooperative communications.

Co-design for an SoC embedded network controller

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第4期7卷 591-596页

作者： ZOU Lian-ying ZOU Xue-cheng Department of Electronic Science ＆ Technology Huazhong University of Science ＆ Technology Wuhan 430074 China

With the development of Ethernet systems and the growing capacity of modem silicon technology, embedded communication networks are playing an increasingly important role in embedded and safety critical systems. Hardware/software co-design is a methodology for solving design problems in processor based embedded systems. In this work, we implemented a new 1-cycle pipeline microprocessor and a fast Ethemet transceiver and established a low cost, high performance embedded network controller, and designed a TCP/IP stack to access the Intemet. We discussed the hardware/software architecture in the forepart, and then the whole system-on-a-chip on Altera Stratix EP1S25F780C6 device. Using the FPGA environment and SmartBit tester, we tested the system＇s throughput. Our simulation results showed that the maximum throughput of Ethemet packets is up to 7 Mbps, that of UDP packets is up to 5.8 Mbps, and that of TCP packets is up to 3.4 Mbps, which showed that this embedded system can easily transmit basic voice and video signals through Ethemet, and that using only one chip can realize that many electronic devices access to the Intemet directly and get high performance.

关键词： System-on-Chip (SoC) Embedded Microprocessor Network controller TCP/IP Co-design