Isolation of nonacosan-10-ol: The extract, after being digested with methanol and concentrated into a small volume, was chromatographed over silica gel with hexane to isolate a crystalline substance. The crystalline substance was recrystallized from hexane: mp 83 -84 ° , [a]D ± 0 ° , C29H60O (M® ion m/e 424; found: C 81.84%, H 14.30%; calc.: C 81,99%, H 14.24%). Acetylation of nonacosan-10-ol: ...

Introduction Modern landfills are highly engineered containment systems, designed to minimize the impact of solid waste (refuse, trash, and garbage) on the environment and human health. In modern landfills, the waste is contained by a liner system. The primary purpose of the liner system is to isolate the landfill contents from the environment and, therefore, to protect the soil and ground wate...

The fitness of sensitive and resistant Pseudomonas aeruginosa in different aquatic environments depends on genetic capacities and transcriptional regulation. Therefore, an antibiotic-sensitive isolate PA30 and a multi-resistant isolate PA49 originating from waste waters were compared via whole genome and transcriptome Illumina sequencing after exposure to municipal waste water and tap water. A ...

INTRODUCTION Developed using focus groups, the Oily Skin Self Assessment Scale (OSSAS) and Oily Skin Impact Scale (OSIS) are patient-reported outcome measures of oily facial skin. OBJECTIVE The aim of this study was to finalize the item-scale structure of the instruments and perform psychometric validation in adults with self-reported oily facial skin. METHODS The OSSAS and OSIS were admini...

This grime is hard to wash off with water, simply because water molecules are more attracted to one another than they are to oil. Oil and water don't mix; thus, they separate into two. We have been taught this since elementary school, with lots of demonstrations. Oil molecules are large and awkward; they are not polar, so water, a very polar molecule, can’t bond with it. This is why when you ha...

The discharge of untreated oily wastewater into the environment has serious impacts on human health, living nature, and ecosystems leads to significant economic losses. Many engineering techniques have been proposed applied treat wastewater, but limited studies investigated low-cost effective using by-products waste/scrap materials from construction industry. Materials are needed not only mitig...

The authors of the article consider problem protection water bodies from pollution by oily wastewater territory enterprises agro-industrial complex engineering and technical systems. A resource-saving technology for this treatment using multicomponent sorbents has been developed.

OBJECTIVE To develop the content for two new patient reported outcome (PRO) measures to: a) assess the severity of symptoms; and b) the impact of facial skin oiliness on emotional wellbeing using qualitative data from face to face, and internet focus groups in Germany and the US. METHODS Using input from initial treatment satisfaction focus groups (n = 42), a review of relevant literature and...

a study was carried out in a strip of a river and in a nearby well in the rainy and dry seasons to assess the impact of tobacco waste disposal on the roadsides. there were significant seasonal variations in the concentration of nicotine being higher (p

activated sludge or extended aeration treatment involves a continous system where aerobic biological growths are mixed with waste water and then separated in a gravity clarifier. therefore, waste treatment system such as the activated sludge system depend on the activities of communities of living organism. in this study, an attempt was made on the indentification of the bacterial population in...