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49
Oct 12, 2014
10/14
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Chen, Hongfei; Xia, Yun; Zhu, Binbin; Hu, Xiawei; Xu, Shihao; Chen, Limei; Papadimos, Thomas J; Wang, Wantie; Wang, Quanguang; Xu, Xuzhong
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This article is from BMC Anesthesiology , volume 14 . Abstract Background: The reversal efficacy of 2% lipid emulsion in cardiac asystole induced by different concentrations of bupivacaine is poorly defined and needs to be determined. Methods: Forty-two male Sprague–Dawley rats were randomly divided into seven groups: B40, B60, B80, B100, B120, B140 and B160, n = 6. The Langendorff isolated heart perfusion model was used, which consisted of a balanced perfusion with Krebs-Henseleit...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4118607
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93
Oct 10, 2014
10/14
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Fioravanti, Mario; Nakashima, Taku; Xu, Jun; Garg, Amit
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This article is from BMJ Open , volume 4 . Abstract Objective: To evaluate the safety profile of nicergoline compared with placebo and other active agents from published randomised controlled trials. Design: Systematic review and meta-analysis of nicergoline compared with placebo and other active agents across various indications. Data sources: MEDLINE, Medline-in-process, Cochrane, EMBASE, EMBASE alerts, Cochrane Central Register of Controlled Trials (CENTRAL), Cochrane Database of Systematic...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4120366
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72
Oct 7, 2014
10/14
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Jiang, Ke; Li, Yingchun; Zhu, Qiumin; Xu, Jiansheng; Wang, Yupeng; Deng, Wuguo; Liu, Quentin; Zhang, Guirong; Meng, Songshu
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This article is from BMC Cancer , volume 14 . Abstract Background: Oncolytic viruses represent a promising therapy against cancers with acquired drug resistance. However, low efficacy limits its clinical application. The objective of this study is to investigate whether pharmacologically modulating autophagy could enhance oncolytic Newcastle disease virus (NDV) strain NDV/FMW virotherapy of drug-resistant lung cancer cells. Methods: The effect of NDV/FMW infection on autophagy machinery in A549...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4141091
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2.0
Jun 30, 2018
06/18
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Jing Tang; Shuo Cao; Yunan Gao; Yue Sun; Weidong Geng; David A. Williams; Kuijuan Jin; Xiulai Xu
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We report a photoluminescence (PL) spectroscopy study of charge state control in single self-assembled InAs/GaAs quantum dots by applying electric and/or magnetic fields at 4.2 K. Neutral and charged exciton complexes were observed under applied bias voltages from -0.5 V to 0.5 V by controlling the carrier tunneling. The highly negatively charged exciton emission becomes stronger with increasing pumping power, arising from the fact that electrons have a smaller effective mass than holes and are...
Topics: Mesoscale and Nanoscale Physics, Condensed Matter
Source: http://arxiv.org/abs/1407.7980
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3.0
Jun 30, 2018
06/18
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Kesheng Wu; Xiang Zhang
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For an analytic differential system in $\mathbb R^n$ with a periodic orbit, we will prove that if the system is analytically integrable around the periodic orbit, i.e. it has $n-1$ functionally independent analytic first integrals defined in a neighborhood of the periodic orbit, then the system is analytically equivalent to its Poincar\'e--Dulac type normal form. This result is an extension for analytic integrable differential systems around a singularity to the ones around a periodic orbit.
Topics: Mathematics, Classical Analysis and ODEs, Dynamical Systems
Source: http://arxiv.org/abs/1407.7944
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5.0
Jun 30, 2018
06/18
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LHCb collaboration; R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; K. Carvalho Akiba; G. Casse; L. Cassina; L. Castillo Garcia; M. Cattaneo; Ch. Cauet; R. Cenci; M. Charles; Ph. Charpentier; S. Chen; G. Alkhazov; S. -F. Cheung; N. Chiapolini; M. Chrzaszcz; K. Ciba; X. Cid Vidal; G. Ciezarek; P. E. L. Clarke; M. Clemencic; H. V. Cliff; J. Closier; P. Alvarez Cartelle; V. Coco; J. Cogan; E. Cogneras; P. Collins; A....
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An analysis of B0->D K*0 decays is presented, where D represents an admixture of D0 and D0b mesons reconstructed in four separate final states: K-pi+, pi-K+, K+K- and pi+pi-. The data sample corresponds to 3.0fb-1 of proton-proton collision, collected by the LHCb experiment. Measurements of several observables are performed, including CP asymmetries. The most precise determination is presented of rB(DK*0), the magnitude of the ratio of the amplitudes of the decay B0->D K+ pi- with a...
Topic: High Energy Physics - Experiment
Source: http://arxiv.org/abs/1407.8136
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57
Oct 4, 2014
10/14
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LI, GUO-CAI; XU, YONG; ZHANG, YU-CHUN; ZHANG, FANG-CHENG; WANG, QI; MA, QING-JIU
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eye 57
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This article is from Oncology Letters , volume 8 . Abstract Surgery for digestive tract disease predominantly consists of reconstruction and anastomosis. Due to the difficult location, anastomosis is extremely challenging and the risk of complication increases accordingly. Traditional manual anastomosis and the application of a stapling device are insufficient. Therefore, the aim of this study was to investigate the feasibility and safety of a novel manual method in a difficult anastomotic...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4156267
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8.0
Jun 30, 2018
06/18
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Luis A. Anchordoqui; Ignatios Antoniadis; De-Chang Dai; Wan-Zhe Feng; Haim Goldberg; Xing Huang; Dieter Lust; Dejan Stojkovic; Tomasz R. Taylor
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[Abridged] We consider extensions of the standard model based on open strings ending on D-branes. Assuming that the fundamental string mass scale M_s is in the TeV range and that the theory is weakly coupled, we discuss possible signals of string physics at the upcoming HL-LHC run (3000 fb^{-1}) with \sqrt{s} = 14 TeV, and at potential future pp colliders, HE-LHC and VLHC, operating at \sqrt{s} = 33 and 100 TeV, respectively. In such D-brane constructions, the dominant contributions to...
Topics: High Energy Physics - Theory, High Energy Physics - Phenomenology
Source: http://arxiv.org/abs/1407.8120
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107
Oct 11, 2014
10/14
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Sampasa-Kanyinga, Hugues; Roumeliotis, Paul; Xu, Hao
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This article is from PLoS ONE , volume 9 . Abstract Purpose: The negative effects of peer aggression on mental health are key issues for public health. The purpose of this study was to examine the associations between cyberbullying and school bullying victimization with suicidal ideation, plans and attempts among middle and high school students, and to test whether these relationships were mediated by reports of depression. Methods: Data for this study are from the 2011 Eastern Ontario Youth...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4116124
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4.0
Jun 30, 2018
06/18
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Wang Cong; Jaume Llibre; Xiang Zhang
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eye 4
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In this paper we mainly study the necessary conditions for the existence of functionally independent generalized rational first integrals of ordinary differential systems via the resonances. The main results extend some of the previous related ones, for instance the classical Poincar\'e's one \cite{Po}, the Furta's one, part of Chen's ones, and the Shi's one. The key point in the proof of our main results is that functionally independence of generalized rational functions implies the...
Topics: Mathematics, Classical Analysis and ODEs, Dynamical Systems
Source: http://arxiv.org/abs/1407.7948
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56
Oct 12, 2014
10/14
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Xavier, Basil Britto; Sabirova, Julia; Pieter, Moons; Hernalsteens, Jean-Pierre; de Greve, Henri; Goossens, Herman; Malhotra-Kumar, Surbhi
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This article is from BMC Research Notes , volume 7 . Abstract Background: De novo genome assembly can be challenging due to inherent properties of the reads, even when using current state-of-the-art assembly tools based on de Bruijn graphs. Often users are not bio-informaticians and, in a black box approach, utilise assembly parameters such as contig length and N50 to generate whole genome sequences, potentially resulting in mis-assemblies. Findings: Utilising several assembly tools based on de...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4118782
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4.0
Jun 30, 2018
06/18
by
Xiang Wan; Wenqian Wang; Jiming Liu; Tiejun Tong
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eye 4
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In systematic reviews and meta-analysis, researchers often pool the results of the sample mean and standard deviation from a set of similar clinical trials. A number of the trials, however, reported the study using the median, the minimum and maximum values, and/or the first and third quartiles. Hence, in order to combine results, one may have to estimate the sample mean and standard deviation for such trials. In this paper, we propose to improve the existing literature in several directions....
Topics: Statistics, Methodology
Source: http://arxiv.org/abs/1407.8038
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5.0
Jun 30, 2018
06/18
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Xiang Zhang
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eye 5
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In this paper we mainly study the global structure of the quaternion Bernoulli equations $\dot q=aq+bq^n$ for $q\in \mathbb H$ the quaternion field and also some other form of cubic quaternion differential equations. By using the Liouvillian theorem of integrability and the topological characterization of $2$--dimensional torus: orientable compact connected surface of genus one, we prove that the quaternion Bernoulli equations may have invariant tori, which possesses a full Lebesgue measure...
Topics: Mathematics, Dynamical Systems
Source: http://arxiv.org/abs/1407.7941
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4.0
Jun 30, 2018
06/18
by
Xiang Zhang
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eye 4
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In this paper we consider a class of higher dimensional differential systems in $\mathbb R^n$ which have a two dimensional center manifold at the origin with a pair of pure imaginary eigenvalues. First we characterize the existence of either analytic or $C^\infty$ inverse Jacobian multipliers of the systems around the origin, which is either a center or a focus on the center manifold. Later we study the cyclicity of the system at the origin through Hopf bifurcation by using the vanishing...
Topics: Mathematics, Classical Analysis and ODEs, Dynamical Systems
Source: http://arxiv.org/abs/1407.7942
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7.0
Jun 30, 2018
06/18
by
Xiao Xiao; K. Shafer Smith; Shane R. Keating
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Motivated by the discrepancy between satellite observations of coherent westward propagating surface features and Rossby wave theory, this paper revisits the planetary wave propagation problem, taking into account the effects of lateral buoyancy gradients at the ocean's surface. The standard theory for long baroclinic Rossby waves is based on an expansion of the quasigeostrophic stretching operator in normal modes, $\phi_n(z)$, satisfying a Neumann boundary condition at the surface, $\phi_n'(0)...
Topics: Physics, Atmospheric and Oceanic Physics
Source: http://arxiv.org/abs/1407.8255
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7.0
Jun 30, 2018
06/18
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Xiaoting Zhao; Peter I. Frazier
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We consider information filtering, in which we face a stream of items too voluminous to process by hand (e.g., scientific articles, blog posts, emails), and must rely on a computer system to automatically filter out irrelevant items. Such systems face the exploration vs. exploitation tradeoff, in which it may be beneficial to present an item despite a low probability of relevance, just to learn about future items with similar content. We present a Bayesian sequential decision-making model of...
Topics: Mathematics, Computing Research Repository, Information Retrieval, Optimization and Control
Source: http://arxiv.org/abs/1407.8186
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54
Oct 11, 2014
10/14
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Xie, Ni; Mou, Lisha; Yuan, Jianhui; Liu, Wenlan; Deng, Tingting; Li, Zigang; Jin, Yi; Hu, Zhangli
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eye 54
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This article is from PLoS ONE , volume 9 . Abstract Background: The BCRP/ABCG2 transporter, which mediates drug resistance in many types of cells, depends on energy provided by ATP hydrolysis. Here, a retrovirus encoding a shRNA targeting the ATP-binding domain of this protein was used to screen for highly efficient agents that could reverse drug resistance and improve cell sensitivity to drugs, thus laying the foundation for further studies and applications. Methodology/Principal Findings: To...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4116202
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73
Oct 8, 2014
10/14
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Xu, Xinxiu; Yu, Xiongjie; He, Jufang; Nelken, Israel
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This article is from Frontiers in Neural Circuits , volume 8 . Abstract The ability to detect unexpected or deviant events in natural scenes is critical for survival. In the auditory system, neurons from the midbrain to cortex adapt quickly to repeated stimuli but this adaptation does not fully generalize to other rare stimuli, a phenomenon called stimulus-specific adaptation (SSA). Most studies of SSA were conducted with pure tones of different frequencies, and it is by now well-established...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4115630
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4.0
Jun 30, 2018
06/18
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Xue Pan; Mingmei Xu; Yuanfang Wu
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eye 4
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Through the Monte Carlo simulation of the three-dimensional, three-state Potts model, which is a paradigm of finite-temperature pure gauge QCD, we study the fluctuations of generalized susceptibilities near the temperatures of external fields of first-, second-order phase transitions and crossover. Similar peak-like fluctuation appears in the second order susceptibility at three given external fields. Oscillation-like fluctuation appears in the third and fourth order susceptibilities. We find...
Topics: High Energy Physics - Lattice, Statistical Mechanics, Condensed Matter
Source: http://arxiv.org/abs/1407.7957
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5.0
Jun 30, 2018
06/18
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Yan-Lin Tang; Hua-Lei Yin; Si-Jing Chen; Yang Liu; Wei-Jun Zhang; Xiao Jiang; Lu Zhang; Jian Wang; Li-Xing You; Jian-Yu Guan; Dong-Xu Yang; Zhen Wang; Hao Liang; Zhen Zhang; Nan Zhou; Xiongfeng Ma; Teng-Yun Chen; Qiang Zhang; Jian-Wei Pan
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Measurement-device-independent quantum key distribution (MDIQKD) protocol is immune to all attacks on detection and guarantees the information-theoretical security even with imperfect single photon detectors. Recently, several proof-of-principle demonstrations of MDIQKD have been achieved. Those experiments, although novel, are implemented through limited distance with a key rate less than 0.1 bps. Here, by developing a 75 MHz clock rate fully-automatic and highly-stable system, and...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1407.8012
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50
Oct 10, 2014
10/14
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Yao, Xuan; Hou, Sarina; Zhang, Duo; Xia, Hongfeng; Wang, Yu-Cheng; Jiang, Jingjing; Yin, Huiyong; Ying, Hao
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eye 50
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This article is from Cell & Bioscience , volume 4 . Abstract Background: Thyroid hormones (THs) are potent hormones modulating liver lipid homeostasis. The perturbation of lipid homeostasis is a hallmark of non-alcoholic fatty liver disease (NAFLD), a very common liver disorder. It was reported that NAFLD patients were associated with higher incidence of hypothyroidism. However, whether abnormal thyroid function contributes to the pathogenesis of NAFLD remains unclear. Results: We used in...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4124172
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3.0
Jun 30, 2018
06/18
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Zhihao Bian; Hao Qin; Xiang Zhan; Rong Zhang; Peng Xue
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eye 3
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We implement a quantum walk in phase space with a new mechanism based on the superconducting resonator-assisted double quantum dots. By analyzing the hybrid system, we obtain the necessary factors of realization of a quantum walk in phase space: the walker, coin, coin flipping and conditional phase shift. In order to implement the coin flipping operator, we add a driving field to the resonator. The interaction between the quantum dots and resonator field is used to implement conditional phase...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1407.8148
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58
Oct 8, 2014
10/14
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Zhou, Douglas; Zhang, Yaoyu; Xiao, Yanyang; Cai, David
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This article is from Frontiers in Computational Neuroscience , volume 8 . Abstract Granger causality (GC) is a powerful method for causal inference for time series. In general, the GC value is computed using discrete time series sampled from continuous-time processes with a certain sampling interval length τ, i.e., the GC value is a function of τ. Using the GC analysis for the topology extraction of the simplest integrate-and-fire neuronal network of two neurons, we discuss behaviors of the...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4115622
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107
Oct 10, 2014
10/14
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Zhou, Lili; Zheng, Shouyan; Xiao, Qiuyan; Ren, Luo; Xie, Xiaohong; Luo, Jian; Wang, Lijia; Huang, Ailong; Liu, Wei; Liu, Enmei
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This article is from BMC Infectious Diseases , volume 14 . Abstract Background: Human bocavirus is a newly discovered parvovirus. Multiple studies have confirmed the presence of human bocavirus1 (HBoV1) in respiratory tract samples of children. The viral load, presentation of single detection and its role as a causative agent of severe respiratory tract infections have not been thoroughly elucidated. Methods: We investigated the presence of HBoV1 by quantitative polymerase chain reaction (PCR)...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4125703
