We have conducted observations of the 12CO(J=1–0) and 12CO(J = 3–2) line emission of 74 major giant molecular clouds (GMCs) within the galactocentric distance of 5.1 kpc in the Local Group galaxy M33 [1]. The observations are part of the Nobeyama Radio Observatory M33 All-disk survey of Giant Molecular Clouds project (NRO MAGiC [2]). The spatial resolution is 100 pc. We detect 12CO(J = 3–2) emi...

Abstract The internal diameter (ID) coating by means of thermal spraying is currently experiencing growing interest in science and industry. In contrast to the well-established plasma- arc-based spray techniques, there a lack knowledge concerning kinetic processes such as HVOF, HVAF warm (WS). A major challenge represents necessity short distances compact design novel ID guns with reduced combu...

We present high resolution (∼ 5′′) maps of the J = 1 0 transitions of 13CO and C18O towards the nucleus of NGC 6946, made with the Owens Valley Millimeter Array. The images are compared with existing 12CO(1-0) maps to investigate localized changes in gas properties across the nucleus. As compared to 12CO, both 13CO and C18O are more confined to the central ring of molecular gas associated with ...

TC18 titanium alloy is an essential material for aircraft landing gear. To reveal the wear and corrosion mechanisms of gear in service, a WC-12Co coating on substrate was prepared by High-Velocity Air-Fuel (HVAF) spraying based optimized process parameters, analysis microscopic characterization results materials involved performed. Based computational fluid dynamics (CFD) method, combustion rea...

To study the protective effect of thermal spraying cobalt-based carbide coatings on hot-dip galvanized sinker rolls, a WC-12Co coating was prepared 316 L stainless steel substrate using supersonic flame method. The corroded in molten liquid zinc at 430 °C to analyze service life and failure process. results show that provided good protection base metal. process Zn first diffused into reacted ch...

Context. Most diffuse clouds are only known as kinematic features in absorption spectra, but those with appreciable H2 content may be visible in the emission of such small molecules as CH, OH, and CO. Aims. We interpret in greater detail the extensive observations of 12CO emission from diffuse gas seen around the archetypical line of sight to ζ Oph. Methods. The 12CO emission is imaged in posit...

Aims. Observations of the molecular gas over scales of ∼0.5 to several kpc provide crucial information on how molecular gas moves through galaxies, especially in mergers and interacting systems, where it ultimately reaches the galaxy center, accumulates, and feeds nuclear activity. Studying the processes involved in the gas transport is one of the important steps forward to understand galaxy ev...