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A systematical study of the chiral magnetic effects at the RHIC and LHC energies

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Chinese Physics C 2020年第2期44卷 107-114页

作者： bang-Xiang Chen Sheng-Qin Feng College of Science China Three Gorges UniversityYichang 443002China Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan 430079China

Considering the magnetic field response of the QGP medium,we perform a systematical study of the chiral magnetic effect（CME）,and make a comparison with the experimental results for the background-subtracted correlator H at the energies of the RHIC Beam Energy Scan（BES） and the LHC *** CME signals from our computations show a centrality trend and beam energy dependence that are qualitatively consistent with the experimental measurements of the charge dependent *** time evolution of the chiral electromagnetic current at the RHIC and LHC energies is systematically *** dependence of the time-integrated current signal on the beam energy s1/2with different centralities is *** phenomenological analysis shows that the time-integrated electromagnetic current is maximal near the collision energy s1/2≈39 *** qualitative trend of the induced electromagnetic current is in agreement with the CME experimental results at the RHIC and LHC energies.

关键词： chiral magnetic effect chiral electromagnetic current charge separations

Management of antiviral drug resistance in chronic hepatitis B

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World Journal of Gastroenterology 2014年第33期20卷 11641-11649页

作者： Ki Bae bang Hong Joo Kim Department of Internal Medicine Sungkyunkwan University Kangbuk Samsung Hospital Seoul 110-746 South Korea

Rescue antiviral treatment for patients with resistance to preexisting nucleos(t)ide analogues remains a clinical challenge. The correct choice of a first-line treatment of high potency and with a high genetic barrier to achieve sustained long-term suppression of viral replication provides the best chance of preventing treatment failure and the emergence of drug resistance. The management of treatment failure and drug resistance requires a precise and accurate clinical and virologic monitoring. Combination treatment with antiviral drugs that belong to different groups is associated with a lower chance of developing resistance to rescue drugs. To guarantee better control of viral replication in patients with drug resistance, the addition of another drug without a cross resistance profile should be given as early as possible, preferably at the time when genotypic resistance emerges. Long-term surveillance for treatment efficacy and possible emergence of drug resistance should be continued to prevent the emergence of multidrug-resistant strains.

关键词： Chronic hepatitis B Antiviral resistance Rescue treatment Multidrug resistance Cross resistance

Application of artificial intelligence in gastroenterology

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World Journal of Gastroenterology 2019年第14期25卷 1666-1683页

作者： Young Joo Yang Chang Seok bang Department of Internal Medicine Hallym University College of Medicine

Artificial intelligence(AI) using deep-learning(DL) has emerged as a breakthrough computer technology. By the era of big data, the accumulation of an enormous number of digital images and medical records drove the need for the utilization of AI to efficiently deal with these data, which have become fundamental resources for a machine to learn by itself. Among several DL models, the convolutional neural network showed outstanding performance in image analysis. In the field of gastroenterology, physicians handle large amounts of clinical data and various kinds of image devices such as endoscopy and ultrasound. AI has been applied in gastroenterology in terms of diagnosis,prognosis, and image analysis. However, potential inherent selection bias cannot be excluded in the form of retrospective study. Because overfitting and spectrum bias(class imbalance) have the possibility of overestimating the accuracy,external validation using unused datasets for model development, collected in a way that minimizes the spectrum bias, is mandatory. For robust verification,prospective studies with adequate inclusion/exclusion criteria, which represent the target populations, are needed. DL has its own lack of *** interpretability is important in that it can provide safety measures, help to detect bias, and create social acceptance, further investigations should be performed.

关键词： Artificial intelligence Convolutional neural network Deep-learning Computer-assisted Gastroenterology Endoscopy

Preface: Modern studies of variable stars

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Research in Astronomy and Astrophysics 2019年第3期19卷 1-2页

作者： Nikolay N.Samus Sheng-bang Qian Institute of Astronomy Russian Academy of Sciences Yunnan Observatories Chinese Academy of Sciences

In this Mini-Volume, seven papers written on the basis of talks selected from those presented at the scientific conference "Modern studies of variable stars," commemorating Prof. M. A. Svechnikov(1933–2011), are published. The conference covered a variety of variable-star topics; the papers in this Mini-Volume deal with close, mainly eclipsing, binaries, Herbig Be stars and stellar molecular masers, with an accent on stellar catalogs of different kinds. We briefly review the contents of these papers.

关键词： stars variable-stars binaries-ISM general

Candidates of eclipsing multiples based on extraneous eclipses on binary light curves： KIC 7622486, KIC 7668648, KIC 7670485 and KIC 8938628

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Research in Astronomy and Astrophysics 2017年第3期17卷 1-12页

作者： Jia Zhang Sheng-bang Qian Jian-Duo He Yunnan Observatories Chinese Academy of Sciences Kunming 650216 China Key Laboratory of the Structure and Evolution of Celestial Objects Chinese Academy of Sciences Kunming 650216 China

Four candidates of eclipsing multiples, based on new extraneous eclipses found on Kepler binary light curves, are presented and studied. KIC 7622486 is a double eclipsing binary candidate with orbital periods of 2.2799960 d and 40.246503 d. The two binary systems do not eclipse each other in the line of sight, but there is mutual gravitational influence between them which leads to the small but definite eccentricity of 0.0035（0.0022） associated with the short 2.2799960 d period orbit. KIC 7668648 is a hierarchical quadruple system candidate, with two sets of solid 203 4- 5 d period extraneous eclipses and another independent set of extraneous eclipses. A clear and credible extraneous eclipse is found on the binary light curve of KIC 7670485 which makes it a triple system candidate. Two sets of extraneous eclipses with periods of about 390 d and 220 d are found on KIC 8938628 binary curves, which not only confirm the previous conclusion of the 388.5 4- 0.3 triple system, but also indicate new additional objects that make KIC 8938628 a hierarchical quadruple system candidate. The results from these four candidates will contribute to the field of eclipsing multiples.

关键词： binaries eclipsing - techniques photometric - methods observational

Activity Model and Its Application in Quarternary System CaO-FeO-SiO_2-WO_3

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Journal of Iron and Steel Research International 2010年第1期17卷 12-17页

作者： GUO Pei-min LI Zheng-bang ZHAO Pei State Key Laboratory for Advanced Iron and Steel Processes and Materials Central Iron andSteel Research Institute Beijing 100081 China

The activity model of CaO-FeO-SiO2-WO3 quarternary system is built according to the coexistence theory of slag structure and the reduction thermodynamics of scheelite is discussed by using this model. The activities of SiO2 and WO3 decrease, while the activity of CaO increases with increasing the basicity of slag. Among SiC, carbon and silicon reactants, the reducing capability of SiC is the strongest, while that of carbon is the poorest at high temperature （about 1 873 K）. Increasing the content of silicon or carbon is beneficial for increasing the yield of tungsten. Oxidizability of slag has a significant effect on the yield of tungsten. Controlling basicity and oxidizability of slag can decrease the oxidation loss of tungsten.

关键词： activity model scheelite thermodynamics direct reduction

On properties of mass transfer in an Algol-type binary system:an example of VV Vir

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Research in Astronomy and Astrophysics 2014年第2期14卷 179-192页

作者： Jia Zhang Sheng-bang Qian Lin-Qiao Jiang Yunnan Observatories Chinese Academy of Sciences Key Laboratory of the Structure and Evolution of Celestial Objects Chinese Academy of Sciences University of Chinese Academy of Sciences

Some properties of mass transfer within a semi-detached binary system are discussed based on an example of VV Vir. The observations and analysis of VV Vir show that it is a semi-detached binary system with the less massive cooler component filling its Roche lobe, which is also called an Algol-type binary system. Based on the parameters of this semi-detached binary, a theoretical study on the mass flow is carded out, including the trajectory of the mass flow, the position, radius and temperature of the impact spot caused by the mass flow, the inconsistent form of the mass flow and the possibly huge rate of energy transfer carried by the mass flow. Humps and distortions in light curves of VV Vir are deemed to be weak evidence for the theoretical results.

关键词： binaries eclipsing -- stars individual (VV Vir) -- techniques photo-metric

Advances in experimental methods for root system architecture and root development

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Journal of Forestry Research 2015年第1期26卷 23-32页

作者： Jun-bang Wang Xiu-juan Zhang Chu Wu Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences College of Horticulture and Gardening Yangtze University

Plant roots play important roles in acquisition of water and nutrients, storage, anchoring, transport, and symbiosis with soil microorganisms, thus quantitative researches on root developmental processes are essential to understand root functions and root turnover in ecosystems,and at the same time such researches are the most difficult because roots are hidden underground. Therefore, how to investigate efficiently root functions and root dynamics is the core aspect in underground ecology. In this article, we reviewed some experimental methods used in root researches on root development and root system architecture, and summarized the advantages and shortages of these methods. Based on the analyses, we proposed three new ways to more understand root processes：（1） new experimental materials for root development;（2） a new observatory system comprised of multiple components, including many observatory windows installed in field, analysis software,and automatic data transport devices;（3） new techniques used to analyze quantitatively functional roots.

关键词： Root system analysis Fractal geometry Novel materials

An automated method for glacial lake mapping in High Mountain Asia using Landsat 8 imagery

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Journal of Mountain Science 2018年第1期15卷 13-24页

作者： ZHANG Mei-mei CHEN Fang TIAN bang-sen Key Laboratory of Digital Earth Science Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences No. 9 Dengzhuang South Road Beijing 100094 China University of Chinese Academy of Sciences Beijing 100049 China Hainan Key Laboratory of Earth Observation Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Sanya 572029 China

Glacial lakes in the High Mountain Asia(HMA)are sensitive to global warming and can result in much more severe flood disasters than some largesized *** accurate and robust method for the extraction of glacial lakes is critical to effective management of these natural water *** methods often have limitations in terms of low spectral contrast and heterogeneous backgrounds in an *** study presents a robust and automated method for the yearly mapping of glacial lake over a large scale,which took advantage of the complementarity between the modified normalized difference water index(MNDWI)and the nonlocal active contour model,required only local homogeneity in reflectance features of *** cloud computing approach with the Google Earth Engine(GEE)platform was used to process the intensive amount of Landsat 8 images from 2015 (344 path/rows and approximately 7504 scenes).The experimental results were validated by very high resolution images from Chinese GaoFen-1 (GF-1) panchromatic multi-spectral(PMS)and appeared a general good *** is the first time that information regarding the spatial distribution of glacial lakes over the HMA has been derived automatically within quite a short period of *** integrating it with the relevant indices,it can also be applied to detect other land cover types such as snow or vegetation with improved accuracy.

关键词： Glacial lake Landsat 8 Modified Normalized Difference Water Index Nonlocal active contour