One-pot multicomponent condensation of β-naphthol, aromatic aldehydes, acetamide or urea in the presence of potassium hydrogen sulfate was carried out under solvent-free condition to afford amidoalkyl naphthols in 83%~96% yields.

ABSTRACT Sweet potatoes are an important staple food for human consumption. This study evaluated sweet potato yield in response to potassium fertilization using different sources and splitting. It was conducted at the Universidade Federal da Paraíba, Areia-PB. A complete randomized block experimental design used a 7 × 2 factorial arrangement. The split into seven treatments (100% after planting...

An ion chromatography technique with conductivity detection was selected as an analytical tool for the simultaneous indirect determination of sodium sulfate, potassium and magnesium sulfate via their respective cations. The method developed validated quantitative assay inorganic salts under study in oral pharmaceutical dosage forms. Chromatographic separation achieved on a Dionex®IonPac® CS16 c...

A flow ratio control system using is introduced. It is composed of Sensor, Flow meter and Mitsubishi PLC, which is the core of the control system, and some other equipment as an example that Potassium Chloride and Sulfuric acid make Potassium Sulfate to introduce this control system using in the chemical industry. This control system controls the flowing of the Sulfuric acid based on the flowin...

in this study an easy, green, efficient and simple approach is reported for the synthesis of some benzothiazole-, benzimidazole- and benzoxazole-2-thiolderivatives. the proposed approach employs the reaction of corresponding aromatic amine with potassium isopropyl xanthate (z11) in the presence of copper sulfate (cuso4) as a catalyst under conventional heating and ultrasonic irradiation. the ad...

The purpose of this research is to investigate the effect potassium fertilization source and dose on productivity quality parameters strawberry. trial was conducted in 2016-2017 at experimental greenhouse Hassan II Institute Agronomy Veterinary Sciences Rabat. Strawberry plants cultivar “San Andreas” were planted November 6th 12 liter pots equipped with a gravity fertigation system. design spli...