In crude oil production, large volumes of produced water are generated as a highly polluting waste byproduct. On average, at least two barrels for every barrel oil. This contains traces in stable and complex emulsions. To purify it, method is proposed based on breaking these emulsions using solvents that induce the coalescence droplets, facilitating their separation from water. The has main objectives: [1] identify characteristics solvent must have to effectively break according Hansen...

Abstract The scientific network of the surfactants and related subjects has been analyzed with CoPalRed © knowledge system. actors studied have countries, research centers laboratories, researchers, journals. thematic map major areas established. Most areas, those that greatest representation in terms number documents, are to physics chemistry. However, biochemistry cell biology, medicine (pediatrics pulmonary physiology), and, a lesser extent, veterinary food science technology also...

Abstract A quick and simple method, based on elemental moisture analyses, is proposed for estimating the mean molecular weight of alkylpolyglucosides fatty alcohol ethoxylates, which are nonionic surfactants that attracting growing interest their ease biodegradation. Analyses water content composition were carried out three (Henkel‐Cognis): Glucopon 215, 600, 650, as well five fattyalcohol ethoxylates (Kao Corporation): FINDET 10/15, 10/18, FINDEt 1214N/16, 1214N/23, 1618/A18. Application...

One of the most popular herbal supplements in world is ginseng. Several studies have evaluated capacity ginseng as a protective element physiological response to exercise. The result produced by exercise causes an increase cellular biomarkers damage skeletal muscle, mainly pro-inflammatory types. different types are composed ginsenosides, which active ingredients that act on central nervous system and antioxidant anti-inflammatory properties, well effects cortisol modulation. use nutritional...

Abstract Detersive processes are complex systems involving a great number of variables. To determine the effect these variables on washing hard surfaces and fatty soils is object this work. The statistical design experiments has been used to evaluate influence factors such as temperature, soil concentration surfactant detergency. experimental trials have made in continuous‐flow device where soiling agent confined column filled with borosilicate glass spheres. Solutions commercial Berol ©...

A three-dimensional vector field model is proposed, whose dimensions are the Hansen Solubility Parameters: dispersion parameter (δD), polarity (δP), and hydrogen bonding (δH). The space that defines has peculiarity of having with a magnitude 2, as its base vector, while vectors have 1. substance characterised position interaction between two substances determined by calculating difference both, known vector. Interaction among may involve solubility, swelling, cracking, surface tension,...

In this paper, a three-dimensional vector field model is proposed, whose dimensions are the Hansen Solubility Parameters: dispersion parameter (δD), polarity (δP), and hydrogen bonding (δH). The space that defines has peculiarity of having with magnitude 2 as its base vector, while vectors have 1. A substance characterised position interaction between two substances determined by calculating difference both, known vector. among may involve solubility, swelling, cracking, surface tension,...

ABSTRACT The kinetics of fatty soil removal from glass surfaces using nonionic biodegradable surfactants has been investigated. For this, mathematical models have developed, which take into account the equilibrium established between processes substrate surface and their subsequent redeposition. washing tests conducted in a continuous‐flow device that simulates conditions found clean‐in‐place system used food industry. A mixture acids (oleic, palmitic stearic) frequently foods, particularly...

Keeping agents that cause biodeterioration under control is a common task in restoring and conserving artworks. However, there are very few studies, specifically those concentrating on pictorial works, provide solutions compatible with the complex mix of organic inorganic materials to be found such cultural assets. This study aims use biocide products commonly used this field (benzalkonium chloride, o-phenylphenol, tributyltin naphthenate) which associated natural varnishes long tradition...

Knowledge engineering and information mapping are two recent scientific disciplines in constant development where mathematics, linguistics, computer science, visualization converge. Their main focus is to discover display new knowledge large document databases. They have broad innovative fields of application for strategic scouting science technology, management, business intelligence, technological evaluation. This article presents a method the research network illustrates its analysis...

Abstract The authors propose a bibliometric model for discarding journal volumes at academic libraries, i.e., removal to offsite storage as part of the library's serials collection. method is based on volume unit measurement and user satisfaction with given titles. age, calculated each volume, from year publication decision discard, dependent citation half‐life, relative productivity, knowledge area, residual utility (potential consultations). makes it possible predict approximate size...

Las relaciones de coocurrencia entre las palabras clave, los investigadores y revistas en artículos científicos un dominio documental concreto confi guran una red tecnocientífica que puede ser analizada cartografiada para conocer nodos, subredes áreas investigación estratégicas, relevantes o importantes. Se ha realizado el análisis estratégico dinámico, traducción cambio, la Red Investigación Española sobre Áreas Protegidas según Web of Science período 1981-2005. Producto este se han...