KIC 9845907: A δ Scuti Star with the First Overtone as the Dominant Frequency and with Many Equidistant Structures in Its Spectrum

In this paper, we present an analysis of the pulsating behavior of Kepler target KIC 9845907. Using the data from Kepler, we detected 85 significant frequencies, including the first overtone f1 = 17.597 day−1 as the dominant frequency, the non-radial independent frequency f3 = 31.428 day−1 (ℓ = 1), as well as two modulation terms fm1 = 0.065 day−1 and fm2 = 1.693 day−1. We found fourteen pairs of triplet structures with fm1 or fm2, four pairs of which can further form quintuplet structures. We note these are the most intriguing features discovered in this study and they were recognized for the first time in δ Scuti stars. We discussed several possible explanations, i.e., beating, the Blazhko effect, combination mode hypothesis, nonlinear mode coupling, large separation, and stellar rotational splitting for these equidistant structures. Our asteroseismic models indicate this modulation with fm1 might be related to the rotational splitting. The study of more δ Scuti stars with triplet and/or quintuplet structures using high-precision space photometry would be helpful to further explore its origin.China (grant Nos. U1938104 and 12003020)FEDER/Junta de Andalucía-Consejería de Economía y ConocimientoE-FQM-041- UGR18 by Universidad de GranadaSpanish State Research Agency (AEI) project PID2019-107061GB-06

The thermal evolution of nuclear matter at zero temperature and definite baryon number density in chiral perturbation theory

The thermal properties of cold dense nuclear matter are investigated with chiral perturbation theory. The evolution curves for the baryon number density, baryon number susceptibility, pressure and the equation of state are obtained. The chiral condensate is calculated and our result shows that when the baryon chemical potential goes beyond $1150 \mathrm{MeV}$, the absolute value of the quark condensate decreases rapidly, which indicates a tendency of chiral restoration.Comment: 17 pages, 9 figures, revtex

NLO QCD corrections to Single Top and W associated production at the LHC with forward detector acceptances

In this paper we study the Single Top and W boson associated photoproduction via the main reaction $\rm pp\rightarrow p\gamma p\rightarrow pW^{\pm}t+Y$ at the 14 TeV Large Hadron Collider (LHC) up to next-to-leading order (NLO) QCD level assuming a typical LHC multipurpose forward detector. We use the Five-Flavor-Number Schemes (5FNS) with massless bottom quark assumption in the whole calculation. Our results show that the QCD NLO corrections can reduce the scale uncertainty. The typical K-factors are in the range of 1.15 to 1.2 which lead to the QCD NLO corrections of 15$$ to 20$$ correspond to the leading-order (LO) predictions with our chosen parameters.Comment: 41pages, 12figures. arXiv admin note: text overlap with arXiv:1106.2890 by other author

Evidence based medicine research of tertiary prevention and management on type 2 diabetes mellitus

随着社会文明的进步、生活方式的西化以及人口结构的老龄化，糖尿病的发病率越来越高。因此糖尿病的防治工作至关重要，中国新近提出的慢病管理，关口前移，预防下沉，糖尿病的三级预防也得到日益关注。针对2型糖尿病患者的三级预防目标主要根据自然病程制定：一级预防是通过控制各种危险因素、中止2型糖尿病的发生、降低发病率；二级预防是通过改善胰岛素抵抗和阻止患者胰岛β细胞损害的进展，防止糖尿病各种并发症的发病；三级预防是保护患者残存的胰岛β细胞、加强血糖控制并且控制并发症，全面降低死亡率。本文将从循证医学的角度，总结2型糖尿病三级预防的临床研究证据，结合我们自己科室医护团队的经验心得，为糖尿病预防及管理的合理性及可行性提供理论基础,并对糖尿病的三级预防提出展望。With the progress of social civilization, the Westernization of lifestyle and the aging of population, the incidence of diabetes is increasing. Therefore, the prevention and treatment of diabetes is essential. China’s recently proposed management of chronic diseases, the gateway to move forward, prevention of subsidence, the tertiary prevention of diabetes has also attracted increasing attention. For patients with type 2 diabetes, the tertiary prevention objectives are made according to the natural course of development: primary prevention is to reduce the incidence of the control of risk factors, the incidence of type 2 diabetes, suspension. Second grade prevention is progress by improving insulin resistance and preventing the damage of patients with pancreatic beta cells, and the incidence of various complications of diabetes. Third prevention is the protection of patients remaining islet beta cells, strengthen blood glucose control and control complications, reduce overall mortality. This article summarizes the clinical research evidence of the tertiary prevention of type 2 diabetes from the perspective of evidence-based medicine, combined with the experience of our own medical team. It provides the theoretical basis for the rationality and feasibility of diabetes prevention and management, and puts forward the prospect of the tertiary prevention of diabetes

Demonstration of Einstein-Podolsky-Rosen Steering with Enhanced Subchannel Discrimination

Einstein-Podolsky-Rosen (EPR) steering describes a quantum nonlocal phenomenon in which one party can nonlocally affect the other's state through local measurements. It reveals an additional concept of quantum nonlocality, which stands between quantum entanglement and Bell nonlocality. Recently, a quantum information task named as subchannel discrimination (SD) provides a necessary and sufficient characterization of EPR steering. The success probability of SD using steerable states is higher than using any unsteerable states, even when they are entangled. However, the detailed construction of such subchannels and the experimental realization of the corresponding task are still technologically challenging. In this work, we designed a feasible collection of subchannels for a quantum channel and experimentally demonstrated the corresponding SD task where the probabilities of correct discrimination are clearly enhanced by exploiting steerable states. Our results provide a concrete example to operationally demonstrate EPR steering and shine a new light on the potential application of EPR steering.Comment: 16 pages, 8 figures, appendix include

Linezolid and Rifampicin Combination to Combat cfr-Positive Multidrug-Resistant MRSA in Murine Models of Bacteremia and Skin and Skin Structure Infection.

Linezolid resistance mediated by the cfr gene in MRSA represents a global concern. We investigated relevant phenotype differences between cfr-positive and -negative MRSA that contribute to pathogenesis, and the efficacy of linezolid-based combination therapies in murine models of bacteremia and skin and skin structure infection (SSSI). As a group, cfr-positive MRSA exhibited significantly reduced susceptibilities to the host defense peptides tPMPs, human neutrophil peptide-1 (hNP-1), and cathelicidin LL-37 (P < 0.01). In addition, increased binding to fibronectin (FN) and endothelial cells paralleled robust biofilm formation in cfr-positive vs. -negative MRSA. In vitro phenotypes of cfr-positive MRSA translated into poor outcomes of linezolid monotherapy in vivo in murine bacteremia and SSSI models. Importantly, rifampicin showed synergistic activity as a combinatorial partner with linezolid, and the EC50 of linezolid decreased 6-fold in the presence of rifampicin. Furthermore, this combination therapy displayed efficacy against cfr-positive MRSA at clinically relevant doses. Altogether, these data suggest that the use of linezolid in combination with rifampicin poses a viable therapeutic alternative for bacteremia and SSSI caused by cfr-positive multidrug resistant MRSA

Development of Magnetic Field-enhanced Vacuum Arc Deposition in China

This paper reviews the latest research and development in China for magnetic field-enhanced vacuum arc deposition (MFE-VAD). China has developed some new technologies in MFE-VAD. These technologies are all based on the interaction between the magnetic field and cathode arc spot (and arc plasma). An external magnetic field can be applied to steer the cathode spot motion including axisymmetric magnetic field (AMF), transverse rotating magnetic field (TRMF) and coupling magnetic field (CMF). The transverse component of AFM can accelerate the cathode spot motion. The TRMF covered the whole cathode was generated by stationary three-phase windings carrying three-phase alternating currents. The CMF was designed to improve the increasing of plasma density and the collisions between ion and droplet-particls (DPs) charging, and as well as further purify the DPs