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431 papers found.
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Cosmological model-independent test of \(\varLambda \) CDM with two-point diagnostic by the observational Hubble parameter data

Aiming at exploring the nature of dark energy (DE), we use forty-three observational Hubble parameter data (OHD) in the redshift range \(0 < z \leqslant 2.36\) to make a cosmological model-independent test of the \(\varLambda \)CDM model with two-point \(Omh^2(z_{2};z_{1})\) diagnostic. In \(\varLambda \)CDM model, with equation of state (EoS) \(w=-1\), two-point diagnostic...

Generating porosity spectrum of carbonate reservoirs using ultrasonic imaging log

Imaging logging tools can provide us the borehole wall image. The micro-resistivity imaging logging has been used to obtain borehole porosity spectrum. However, the resistivity imaging logging cannot cover the whole borehole wall. In this paper, we propose a method to calculate the porosity spectrum using ultrasonic imaging logging data. Based on the amplitude attenuation...

Controllable synthesis of two-dimensional tungsten nitride nanosheets as electrocatalysts for oxygen reduction reaction

. S.p.r.i n.g.e.r-. V.e.r.la.g. G..m. b. H..G. e.r.m. a.n.y. 2.0.1.8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Jie Zhang received her PhD degree in materials physics and

Impact of universal medical insurance system on the accessibility of medical service supply and affordability of patients in China

Conceptualization: Zhiguo Zhang, Jie Zhang, Xiaoyun Pan, Liang Zhang, Si Jin. Data curation: Xiaolei Xiong, Zhiguo Zhang, Jing Ren, Jie Zhang, Shiwei Gong, Si Jin. Formal analysis: Xiaoyun Pan, Liang Zhang, Shiwei ... Gong, Si Jin. Funding acquisition: Zhiguo Zhang, Shiwei Gong. Methodology: Xiaoyun Pan, Liang Zhang, Shiwei Gong, Si Jin. Project administration: Shiwei Gong. Resources: Jie Zhang, Liang Zhang

Microbial community response reveals underlying mechanism of industrial-scale manganese sand biofilters used for the simultaneous removal of iron, manganese and ammonia from groundwater

pyrosequencing results and revised the manuscript. XY and JZ (Jie Zhang) conceived the idea of the study, put forward the hypothesis and made the final revisions of figures, and gave the final approval for

Association between social support and health-related quality of life among Chinese seafarers: A cross-sectional study

Xiao, Jie Zhang, Chuanli Wu. Funding acquisition: Jing Xiao. Investigation: Jing Xiao, Binjun Huang, Huan Shen, Xiuli Liu, Jie Zhang, Yaqing Zhong. Methodology: Jing Xiao, Yaqing Zhong, Tianqi Hua ... . Project administration: Binjun Huang, Jie Zhang. Resources: Yuexia Gao. Supervision: Jing Xiao, Yuexia Gao. Validation: Jie Zhang, Tianqi Hua. Writing ± original draft: Jing Xiao, Binjun Huang, Yuexia

Study of color-octet matrix elements through \(J/\psi \) production in \(e^{+}e^{-}\) annihilation

In this paper, the color-octet long distance matrix elements are studied through the inclusive \(J/\psi \) production in \(e^{+}e^{-}\) annihilation within the framework of non-relativistic QCD factorization. The calculations are up-to next-to-leading order with the radiative and relativistic corrections in the energy region of the B-factory and the near-threshold region of \(4.6...

Is gout a risk equivalent to diabetes for stroke and myocardial infarction? A retrospective claims database study

Gout is a risk factor for cardiovascular disease, but associations with specific cardiovascular outcomes, myocardial infarction (MI), and stroke are unclear. Our objective in the present study was to assess whether gout is as strong a risk factor as diabetes mellitus (DM) for incident MI and incident stroke. In this retrospective study, we used U.S. claims data from 2007 to 2010...

On the Mechanism of ZDDP Antiwear Film Formation

Zinc dialkyldithiophosphate additives are used to control wear and inhibit oxidation in almost all engine oils as well as many other types of lubricant. They limit wear primarily by forming a thick, protective, phosphate glass-based tribofilm on rubbing surfaces. This film formation can occur at low temperatures and is relatively indifferent to the chemical nature of the...

China’s engagement with development assistance for health in Africa

Background As an emerging donor in health related development across the world, particularly towards Africa, the People’s Republic of China (PRC) has been increasing its influence within the field of global public health over the past few decades. Yet between the period of 2000 and 2013, little is known about the scope, scale and priority of China’s grant-making programs. Methods...

Effect of Base Oil Structure on Elastohydrodynamic Friction

The EHD friction properties of a wide range of base fluids have been measured and compared in mixed sliding–rolling conditions at three temperatures and two pressures. The use of tungsten carbide ball and disc specimens enabled high mean contact pressures of 1.5 and 2.0 GPa to be obtained, comparable to those present in many rolling bearings. The measurements confirm the...

Facility location with double-peaked preferences

sufficiently close for the school to be easily accessible by the Aris Filos-Ratsikas and Jie Zhang were supported by the ERC Advanced Grant 321171 (ALGAME) and the Sino-Danish Center for the Theory of

The pH stability of foot-and-mouth disease virus

to thank Zaixin Liu, Jie Zhang, and Pinghua Li for helpful discussions, continued advice and inspiration. We are also grateful to the state key laboratory veterinary etiological biology where we study

The pH stability of foot-and-mouth disease virus

to thank Zaixin Liu, Jie Zhang, and Pinghua Li for helpful discussions, continued advice and inspiration. We are also grateful to the state key laboratory veterinary etiological biology where we study

Modelling of a post-combustion CO2 capture process using extreme learning machine

% reduction of CO2 emission by 2050 comparing with the & Jie Zhang level in 1950 is set by the Intergovernmental Panel on Climate Change. Carbon capture and storage (CCS) has been widely believed as an

The pH stability of foot-and-mouth disease virus

to thank Zaixin Liu, Jie Zhang, and Pinghua Li for helpful discussions, continued advice and inspiration. We are also grateful to the state key laboratory veterinary etiological biology where we study

The pH stability of foot-and-mouth disease virus

to thank Zaixin Liu, Jie Zhang, and Pinghua Li for helpful discussions, continued advice and inspiration. We are also grateful to the state key laboratory veterinary etiological biology where we study

The pH stability of foot-and-mouth disease virus

to thank Zaixin Liu, Jie Zhang, and Pinghua Li for helpful discussions, continued advice and inspiration. We are also grateful to the state key laboratory veterinary etiological biology where we study

Heuristic Strategies for Persuader Selection in Contagions on Complex Networks

Individual decision to accept a new idea or product is often driven by both self-adoption and others’ persuasion, which has been simulated using a double threshold model [Huang et al., Scientific Reports 6, 23766 (2016)]. We extend the study to consider the case with limited persuasion. That is, a set of individuals is chosen from the population to be equipped with persuasion...