Chevron Corp. (NYSE: CVX) is one of the market leads energy oil and gas industry. The company primarily consists two parts: upstream downstream. responsible for producing, processing, transporting crude oil, while downstream operations includes refining it into petroleum products, manufacturing marketing commodity to world. This paper mainly use SWOT analysis comprehensively access its stock pe...

Introduction Applications of multiphase technology are prevalent in petroleum refining, synthesis gas conversion to fuels and chemicals, bulk commodity chemicals, specialty chemicals, conversion of undesired by-products to recyclable products, manufacture of polymers, biotechnology and pollution abatement. In these processes the reactor performance is crucial: it determines the number and size ...

Sustainable Chemistry The cover image for article number 2100391 by Siegfried R. Waldvogel and co-workers represents a method to obtain selectively 5-iodovanillin, as an advanced building block, from side-stream lignins degradation using electrochemically generated periodate. In times of climate changes the utilization lignin renewable feedstock fine chemicals is considered, would rival petrole...

Vanilic Acid Article 2200431 by Markus Stöckl, Siegfried R. Waldvogel, and co-workers demonstrates a new method how to obtain selectively vanillic acid, flavouring agent antioxidant, from side-stream lignins degradation using electrochemically generated ferrate as oxidizer. In times of climate changes the utilization relevant bio-based lignin renewable feedstock for fine chemicals is considered...

A magnetic bearing is a bearing which supports a load using magnetic levitation. Magnetic bearings support moving machinery without physical contact, for example, they can levitate a rotating shaft and permit relative motion without friction or wear. In active magnetic bearings (AMB) a stable equilibrium is achieved by means of one or more control loops. The use of control loop for maintaining ...

pH-Zone refining counter-current chromatography was successfully applied to the preparative isolation and purification of six alkaloids from the ethanol extracts of Uncaria macrophylla Wall. Because of the low content of alkaloids (about 0.2%, w/w) in U. macrophylla Wall, the target compounds were enriched by pH-zone refining counter-current chromatography using a two-phase solvent system compo...

BACKGROUND Heightened awareness of the health benefits of fish oil consumption has led to a great increase in the number of fish oil supplements available to the consumer. Therefore manufacturers are continually looking for ways to distinguish their products from those of competitors. Minimally refined or virgin fish oils provide a unique feature; however, petroleum hydrocarbon contamination fr...