Claude Bernard and James E. Hetrick Department of Physics, Washington University, St. Louis, MO 63130, USA Thomas A. DeGrand and Matthew Wingate Physics Department, University of Colorado, Boulder, CO 80309, USA Carleton DeTar and Craig McNeile Physics Department, University of Utah, Salt Lake City, UT 84112, USA and Zentrum für Interdisziplinäre Forschung, Universität Bielefeld, Bielefeld, Ger...

We present ground-based high-resolution high S/N spectra of the slowly pulsating B star HD 147394. Two frequencies are clearly found in the moments of the Si II 4128-4130 doublet: f1 = 0.8008 c d−1 and f2 = 0.7813 c d−1. The frequency f1 is also found in the HIPPARCOS data. A third frequency is also present in our spectroscopic data: f3 = 0.7175 c d−1 or its aliases due to the time sampling. A ...

Pancreatic cancer is an aggressive malignancy with a poor overall survival rate. Given advances in pharmacogenomics, numerous gene mutations have been identified that could be potential targets for drug development. Therefore, future research strategies may identify prognostic and predictive markers aiming to improve outcome by maximizing efficacy whilst lowering toxicity. In this commentary, w...

The chemical degradation of alloy components in sulfur-containing environments is a major concern in oil and gas production. This paper discusses the effect of elemental sulfur and its simplest anion, sulfide, on the corrosion of Cr-Mo alloy steel at pH 2 and 5 during 10, 20 and 30 h immersion in two different solutions. 4130 Cr-Mo alloy steel is widely used as tubing and tubular components in ...

Samples of 4130 steel were cut by a CO2 laser and the effects of power and feed rate on kerf width, surface roughness, striation frequency and the size of heat affected zone (HAZ) were studied. It was observed that power had a major effect on kerf width and size of HAZ, while feed rate affects were secondary. In the other hand, surface roughness and striation frequency were affected most by fee...

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In this paper, the analysis of engine mounting structures that will be applied to electric vehicles is conducted. The structure subjected static loading from mounted components assembly, including assembly gearbox, motor, and corresponding brackets. arrangement, HSLA material mostly used general structural steel such as AISI 4130 also used. This study aims evaluate existing design so further op...