This study primarily addresses the development of dynamic, selective and economical metal–acid (bifunctional) catalysts for one-pot menthol production by citral hydrogenation. Specifically, various metals such as Pd, Pt, Ni, Cs Sn were doped over alumina support. Additionally, bifunctional composite also prepared with impregnation heteropoly acids Pd precursors Analytical techniques (e.g., BET,...

This paper analyses the effects of the nonlinear distortions introduced by high-power amplifiers (HPAs) on the performance of the linear decorrelating multiuser detector (MUD) in synchronous direct-sequence code-division multipleaccess (DS-CDMA) systems. By assuming and motivating the Gaussian distribution of the nonlinear distortion noise, the system bit-error rate (BER) has been derived theor...

BACKGROUND Obesity is one of the main determinants of avoidable disease burden.To implement a program by university students acting as "health promoting agents" (HPAs) and to evaluate the effects on obesity prevalence of the primary-school-based program that promotes healthy lifestyle, including dietary and physical activity recommendations over 28 months. METHODS Two school clusters were ran...

Current research trends have advanced the use of “green propellants” on a wide scale for spacecraft in various space missions; mainly environmental sustainability and safety concerns. Small satellites, particularly micro nanosatellites, evolved from passive planetary-orbiting to being able perform active orbital operations that may require high-thrust impulsive capabilities. Thus, onboard prima...

Keggin H3PW12O40 (PW12) and Wells-Dawson H6P2W18O60 (P2W18) heteropolyacids (HPAs) are photo(catalysts) for various acid-promoted redox catalytic reactions. Their activity increases if they deposited on certain supports as metal oxides or carbon materials. Although the surface area acid-base interactions of HPAs with considered key factors performance binary material, role local structure chang...