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Search Results: 1 - 10 of 107628 matches for " Shi-Yao Chen "
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Esophageal mucosal lesion with low-dose aspirin and prasugrel mimics malignancy: A case report
Gui-Fen Ma,Hong Gao,Shi-Yao Chen
World Journal of Gastroenterology , 2011, DOI: 10.3748/wjg.v17.i35.4048
Abstract: Dual antiplatelet therapy consisting of low-dose aspirin (LDA) and other antiplatelet medications is recommended in patients with coronary heart disease, but it may increase the risk of esophageal lesion and bleeding. We describe a case of esophageal mucosal lesion that was difficult to distinguish from malignancy in a patient with a history of ingesting LDA and prasugrel after implantation of a drug-eluting stent. Multiple auxiliary examinations were performed to make a definite diagnosis. The patient recovered completely after concomitant acid-suppressive therapy. Based on these findings, we strongly argue for the evaluation of the risk of gastrointestinal mucosal injury and hemorrhage if LDA therapy is required, and we stress the paramount importance of using drug combinations in individual patients.
More Detailed Descriptions of Locality and Realism
Ping-Xing Chen,Shi-Yao Zhu
Physics , 2007,
Abstract: Many experiments have shown that locality-realism theory is at variance with quantum mechanics predictions. Although locality and realism, which are two different conceptions, are given respective definition, the descriptions of the both are a little of abstract when they are applied to real experimental situations. The abstract descriptions result in difficulty for one to judge whether the variance come from locality or realism or both. Here we provide more detailed descriptions of locality and realism, and show that any system being in a pure state or a non-maximally mixed state has property of non-realism. We also present experimental schemes feasible under current technologies to test the non-locality realsim. The connections between non-locality and entanglement and correlation are also discussed.
Research of shunt IPS based on threat ranking

CHEN Zheng-tao,JIN Shi-yao,

计算机应用研究 , 2009,
Abstract: Inline traffic analysis for intrusion prevention become more difficult as the high speed data rates of modern networks. Jose implemented a prototype shunt hardware design, and this model was valuable for improving the efficiency of intrusion detection, Based on this model, this paper proposed a new shunt model connecting with intrusion prevention system by the theory of threat ranking,and put forward the design of every part,then evaluated the system for a rudimentary work.
Negative and Positive Lateral Shift of a Light Beam Reflected from a Grounded Slab
Li-Gang Wang,Hong Chen,Nian-Hua Liu,Shi-Yao Zhu
Physics , 2005, DOI: 10.1364/OL.31.001124
Abstract: We consider the lateral shift of a light beam reflecting from a dielectric slab backed by a metal. It is found that the lateral shift of the reflected beam can be negative while the intensity of reflected beam is almost equal to the incident one under a certain condition. The explanation for the negativity of the lateral shift is given in terms of the interference of the reflected waves from the two interfaces. It is also shown that the lateral shift can be enhanced or suppressed under some other conditions. The numerical calculation on the lateral shift for a realistic Gaussian-shaped beam confirms our theoretical prediction.
Server-based Hierarchical Filtering Scheme in Distributed Interactive Simulation

SHI Yang,JIN Shi-yao,ZHANG Chen-xi,
史 扬

软件学报 , 1999,
Abstract: Distributed interactive simulation requires high network bandwidth and computation capacity whichcaused by redundant data when the system's scale increases. This situation can be alleviated by data filtering togreat extent. But the effective filtering scheme requires simulation hosts receiving accurate filtering informationand high processing capability, this consumes too much computation resources when systems grow. In this paper,the authors propose a server-based hierarchical filtering scheme. New scheme frees the simulation hosts from thefiltering processing and avails system's scalability. New scheme also exploits the potential locality of distributedinteractive simulation, which reduces the amounts of filtering messages exchanged and filtering computation.
A Hierarchical Multicast Address Allocating Strategy in Data Distribution Management

SHI Yang,LING Yun-xiang,JIN Shi-yao,ZHANG Chen-xi,

软件学报 , 2001,
Abstract: HLA (high level architecture) is a new generation of technical framework for distributed interactive simulation which supports simulation interoperability and reusability. But distributed interactive simulations under Internet environment face the challenge of system scalability due to the limited resources of bandwidth and computation. HLA provides the possibility for system scalability through data distribution management (DDM). In this paper, the technical approach to DDM is discussed and a new strategy is proposed for multicast address allocation. This new strategy uses a hierarchical method to allocate addresses to solve the problem of contradiction between number of multicast addresses supported by hosts and the redundant data received by hosts. The new strategy also supports for the reliable transferring and data bundling of simulation data.
Specifying Executable Probability Design of Real-Time Task in Resource-Sharing Network with ASM

ZHANG Dong-Song,JIN Shi-Yao,CHEN Fang-Yuan,LI Chao,

计算机系统应用 , 2011,
Abstract: Based on a formal method called Abstract State Machine(ASM),this paper describes an admission control mechanism of real-time task in resource-sharing network.In the meantime,the paper also proposes an ASM-based design model for executable probability of real-time task,and shows the methods and steps to analyze this design model based on Spec Explorer.The paper argues that the work will not only do good to further verification for the design method,but also to more refinements for admission control of real-t...
A Weakly Hard Real-Time Schedule Algorithm Based on Cutting Down

WU Tong,JIN Shi-Yao,LIU Hua-Feng,CHEN Ji-Ming,

软件学报 , 2008,
Abstract: Existing weakly hard real-time scheduling algorithms can not guarantee the meeting ratio of executing sequence of which the length islarger than fixed window-size.Therefore,this paper,based on the(m~-,p)constraint, proposes an algorithm which is named as CDBS(cut-down based scheduling).Since the discrimination of the satisfiability of(m~-,p)constraintneeds to go over the whole executing sequence of the task,it is very difficult and infeasible.For this reason,this paper introduces an efficient algorithm of cutting down the sequence,proves the correctness of the algorithm.This paper uses proper data structures so that the complexity of judgment is irrelevant to the length of sequence.Experimental results show the efficiency.Furthermore,this paper compares CDBS with other classical algorithms,such as EDF,(earliest deadline first),DBP(distance-based priority),DWCS(dynamic window constraint schedule),and the results show its competence.
Biotransformation of Benzene to cis-1,2-dihydroxycyclohexa-3,5-diene Using Recombinant Escherichia coli JM109 (pKST11)

Xiang-Hua Qu,Jin-Chun Chen,Qi-Xiang Ma,Shi-Yao Sun,Guo-Qiang Chen,

生物工程学报 , 2003,
Abstract: Cis 1,2 dihydroxycyclohexa 3,5 diene (DHCD) can be used as a valuable chiral intermediates for applications in pharmaceuticals, aerospace, electrical and fine chemical industries By on line detection of toluene dioxygenase (TDO) activity in whole recombinant Escherichia coli JM109(pKST11) cells that harbored TDO gene under a tac promoter, effects of IPTG and various benzene addition strategies on bioransformation of benzene to DHCD were investigated When IPTG was used at the beginning of fermentation, the growth of cells was inhibited and TDO activity only maintained for 4 hours while same experiments with addition of IPTG at 6h or 8h generated TDO activity for 18 hours Suitable induction time for IPTG was in the cell logarithmic growth phase and 0 5 mmol/L IPTG was sufficient for inducing maximum TDO activities Benzene strongly inhibited the activity of TDO which catalyses the conversion of benzene to DHCD It was found that both cell growth and TDO activity was remarkably inhibited by feeding of benzene vapor, only 7 5 g/L DHCD was obtained While the benzene inhibition effect was ameliorated by two-liquid phase culture fermentation in which liquid paraffin was used as second phase in the broth Using different initial ratios of paraffin to benzene in fed-batch culture, DHCD contents were increased to 22 6 g/L, which was 3-fold more compared with that in benzene vapor culture A further improvement of DHCD production was achieved when the mixture of liquid paraffin and benzene was added continuously by peristaltic pump, the DHCD contents were increased to a final concentration of 36 8 g/L It was proven that the key to improving DHCD production by recombinants is to prolong TDO activity in cells, which can be achieved by using suitable addition benzene strategies
Transforming Growth Factor-β1 and -β2 in Gastric Precancer and Cancer and Roles in Tumor-Cell Interactions with Peripheral Blood Mononuclear Cells In Vitro
Gui-Fen Ma, Qing Miao, Xiao-Qing Zeng, Tian-Cheng Luo, Li-Li Ma, Yi-Mei Liu, Jing-Jing Lian, Hong Gao, Shi-Yao Chen
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0054249
Abstract: Transforming growth factor-β1 (TGF-β1) and -β2 are correlated with poorer prognosis in gastric cancer (GC), which act in both tumor and immune cells. However, their expressions in precancer and tumor-cell interactions with peripheral blood mononuclear cells (PBMCs) remain unclear. Protein levels of TGF-β1 and -β2 were analyzed by immunohistochemistry and corresponding mRNA levels were determined by quantitative real-time polymerase chain reaction in 93 surgical and biopsy specimens. Serum TGF-β concentration was detected by enzyme-linked immunosorbent assays. AGS and MKN45 cell lines were directly or indirectly cocultured with PBMCs in vitro. TGF-β and Smad molecules were detected after cocultures and the growths of GC cells and PBMCs were assessed by cell proliferation assay. The results showed positive staining for TGF-β1 was detected in 20% of control samples, 52.3% of precancer, 59.1% of early GC and 66.7% of advanced GC samples, correlated with lesion progression (χ2 = 9.487, P = 0.002). All tissues were positive for TGF-β2. TGF-β1 mRNA levels were increased in advanced cancers, while TGF-β2 increased earlier. TGF-β1 mRNA levels were higher in tumor than in peritumor, which positively correlated with Smad2 and Smad7. Serum TGF-β levels were significantly higher in patients with early and advanced cancers compared to controls (TGF-β1:50.08±4.38 and 45.76±5.00 vs. 27.78±6.11 ng/mL; TGF-β2:133.61±21.90 and 111.34±15.76 vs. 59.41±15.42 ng/mL, both P<0.05). The levels of TGF-β1 mRNA and cytokine secretion were higher in GC cells after direct coculture compared to indirect culture. TGF-β1 was decreased and TGF-β2 was increased in PBMCs after cocultures. Moreover, TGF-β1 inhibited the viability of PBMCs but not cancer cells. Collectively, neoplastic transformation may be an early event involving the increase of TGF-β1 in the general and local environment. TGF-β1 production is promoted by the direct interaction between GC cells and PBMCs, which might facilitate cancer development.
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