In the crystal of the title compound, C(14)H(17)NO(2), mol-ecules are arranged into chains along the b axis linked via O-H⋯O hydrogen bonds. While the benzene ring is essentially planar, with a maximum deviation from the best plane of 0.003 (1) Å, the pyridine ring is slightly V-shaped: the distance of the carbonyl C atom from the benzene best plane is 0.120 (1) Å. The hy-droxy group is incline...

Abstract. This study analyzed the nature, mechanisms and drivers for hot-and-polluted episodes (HPEs) in Pearl River Delta, China. Numerical model simulations were conducted summer autumn of 2009–2011. A total eight HPEs identified, mainly occurring August September. K-means clustering was applied to group into three clusters based on their characteristics mechanisms. We found driven by weak su...

This study investigates the impact of sea surface temperature (SST) on forecast two typhoons, which consecutively hit South Korea in 2020. SST data were obtained from Daily Optimum Interpolation Sea Surface Temperature (OISST) version 2 and HYbrid Coordinate Ocean Model/Navy Coupled Data Assimilation (HYCOM/NCODA; GLBy0.08/expt_93.0). When verified using situ observational data, OISST did not a...

The Hy-V project will conduct the first-ever mode-transition flight-test for a dual-mode hypersonic scramjet, which will occur at approximately 90,000 feet onboard a sounding rocket. At altitude, atmospheric conditions and inlet flow speed will match the flow conditions simulated in the UVA Aerospace Research Laboratory (ARL) hypersonic wind tunnel. Geometric similarity between the wind tunnel ...

In this study, three types of aerofoils were examined at various angles attack and a steady value then fluctuated air flow. Then, the findings compared to XFOIL prediction results. The experimental simulation results consistent some extent with shape chosen was modified by making slot through blade aerofoil studying their effect on aerodynamics shape. slotted studied as it faced wind revealed t...

Modifying of HY/Zeolite is by loading nickel for applying catalyst in thermal catalytic cracking furfural extract-40 from the lubricating base oil unit. The study involved characterizing HY-zeolite and promoted with X-ray diffraction analysis, Scanning electron microscopy (SEM), BET (Brunauer, Emmett, Teller), infrared ray analyses FTIR. tubular reactor a fixed bed two type catalysts; HY/zeolit...

Haiyang-2 (HY-2) missions have accumulated sea surface height (SSH) observations on a global scale for more than 10 years. Four satellites, HY-2A, HY-2B, HY-2C and HY-2D, provide even but differently distributed data, which play complementary role in marine gravity studies with other missions. Therefore, this paper evaluates the performances of HY-2 altimetric data modeling from following four ...