The condensation of acetone using anhydrous hydrogen chloride results after three weeks at room temperature, in a 1 5 % yield of phorone (4) and a 7 5 % yield of mesityl oxide (5). In the presence of one weight percent of the Lewis acid, aluminium chloride, the yield of 4 is increased to 3 9 % . An increase in the amount of the Lewis acid, aluminium chloride, to ten weight percent results in a ...

BACKGROUND Thermophilic enzymes have attracted much attention for their advantages of high reaction velocity, exceptional thermostability, and decreased risk of contamination. Exploring efficient thermophilic glycoside hydrolases will accelerate the industrialization of biofuels and biochemicals. RESULTS A multifunctional glycoside hydrolase (GH) CoGH1A, belonging to GH1 family with high acti...

Per vehicle crash involvement rates were compared for otherwise identical vehicle models with and without electronic stability control (ESC) systems. ESC was found to affect single-vehicle crashes to a greater extent than multiple-vehicle crashes, and crashes with fatal injuries to a greater extent than less severe crashes. Based on all police-reported crashes in 7 states over 2 years, ESC redu...

BACKGROUND Whether antiarrhythmic drugs improve the rate of successful resuscitation after out-of-hospital cardiac arrest has not been determined in randomized clinical trials. METHODS We conducted a randomized, double-blind, placebo-controlled study of intravenous amiodarone in patients with out-of-hospital cardiac arrest. Patients who had cardiac arrest with ventricular fibrillation (or pul...

The American Heart Association reports that approximately 220,000 people die each year of sudden cardiac arrest. In ventricular fibrillation (VF), the most common abnormal heart rhythm that causes cardiac arrest, the heart's electrical impulses suddenly become chaotic, often without warning. Death will follow within minutes if the victim is not treated appropriately, and the only known treatmen...

We investigate the meteorological and dynamical conditions that led to extreme heat in Pacific Northwest from late June early July 2021. The was preceded by an upper-level atmospheric blocking snatched a warm pool of air lower latitudes. A heat-trapping stable stratification ensued within anticyclone, raising surface temperatures significantly. An upper-tropospheric wave breaking concomitant cy...

In humans, hairs are common, in man it is a special and cherished feature especially in females. Hair is a filamentous keratinized structure present over almost the entire body surface (Jungueira and Carneiro, 2005). One hundred and twenty four subjects comprising of 61 females and 63 males, aged 21-41 years were randomly selected from medchal town. Phalangeal hair distribution was inspected ph...