Search results for "Alcohol"
showing 10 items of 1798 documents
Microbial resources and sparkling wine differentiation : state of the arts
2022
Consumers’ increasing interest in sparkling wine has enhanced the global market’s demand. The pro-technological yeasts strains selected for the formulation of microbial starter cultures are a fundamental parameter for exalting the quality and safety of the final product. Nowadays, the management of the employed microbial resource is highly requested by stakeholders, because of the increasing economic importance of this oenological sector. Here, we report an overview of the production processes of sparkling wine and the main characterisation criteria to select Saccharomyces and non-Saccharomyces strains appropriate for the preparation of commercial starter cultures dedicated to the primary a…
Editorial: Neurobehavioural Mechanisms of Resilience and Vulnerability in Addictive Disorders
2021
The Hexameric Resorcinarene Capsule as a Brønsted Acid Catalyst for the Synthesis of Bis(heteroaryl)methanes in a Nanoconfined Space
2019
Herein, we show that the hexameric resorcinarene capsule C is able to catalyze the formation of bis(heteroaryl)methanes by reaction between pyrroles or indoles and carbonyl compounds (α-ketoesters or aldehydes) in excellent yields and selectivity. Our results suggest that the capsule can play a double catalytic role as a H-bond catalyst, for the initial activation of the carbonyl substrate, and as a Bronsted acid catalyst, for the dehydration of the intermediate alcohol.
Organocatalytic Oxa-Michael/Michael/Michael/Aldol Condensation Quadruple Domino Sequence : Asymmetric Synthesis of Tricyclic Chromanes
2018
An efficient and highly stereoselective one-pot, four-component synthesis of functionalized tricyclic chromanes has been achieved through an organocatalyzed quadruple domino reaction. The reaction sequence involves an oxa-Michael/Michael/Michael/aldol condensation between alcohols, 2 equiv of acrolein, and nitrochromenes to generate the pharmaceutically important tricyclic chromanes bearing three contiguous stereogenic centers including a chiral tetrasubstituted carbon center in good domino yields (30–70%) and excellent diastereo- and enantioselectivities (>20:1 dr and >99% ee). peerReviewed
Does Addiction Therapy Change the Hedonistic Temporal Orientation and the Satisfaction with the Patients’ Life?
2016
The current chapter deals with the problem of alcohol addicted patients. During their therapy, they described a sense of emptiness, low level of life satisfaction and difficulties in enjoying their lives. Those problems often caused them to return to psychoactive substance use. A longitudinal study of alcohol dependent patients (N=45) in the process of addiction therapy was conducted. The research questionnaires measured selected aspects of psychological well-being (operationalized as important areas of life and temporal orientation). The first measurement was made at the beginning of a patient’s addiction therapy. The second measurement was carried out in the last week of the patient's the…
Densities, Refractive Indices, and Derived Excess Properties of the Binary Systems Toluene + Isooctane and Methylcyclohexane + Isooctane and the Tern…
2000
This paper reports mesurements of the densities and refractive indices of the binary systems toluene + isooctane and methylcyclohexane + isooctane and the ternary systems tert-butyl alcohol (TBA) + toluene + isooctane and tert-butyl alcohol (TBA) + methylcyclohexane + isooctane over the entire range of composition at 298.15 K. Excess molar volumes and changes of refractive indices were evaluated from the experimental data obtained. These derived properties were fitted to variable-degree polynomials. The experimental values of physical properties were compared with the values estimated by different methods.
Poczucie jakości życia i samoocena pacjentów w trakcie terapii uzależnienia od alkoholu
2018
During the addiction therapy patients describes a sense of emptiness, low level of life satisfaction and diffi culties in enjoying their lives. Those problems often caused them to return to psychoactive substance use. The research presented in the article is aimed at checking the dynamics of the above constructs during addiction therapy, which may help to better understand the treatment process. A longitudinal study of alcohol dependent patients in the process of addiction therapy was conducted. The research questionnaires measured selected aspects of psychological well-being as general construct and specifi c subscales. The fi rst measurement was made at the beginning ofa patient’s addicti…
THE INFLUENCE OF THIAMINE IN THE FERMENTATION OF THE WINE YEASTS
2011
Due to the enzymatic equipment, the yeast cell produces alcoholic fermentation by the meaning of a zimazic complex which catalyzes in different stages the redox processes of the carbohydrates, which are able to ferment, ultimately leading to ethanol. The fermentation rate is an exponential function being influenced by the cells concentration in the development environment and the starter cultures of micro-organisms. Most of the yeast strains do ferment some substrates rich in hexosanes and oligoglucides: sucrose, maltose, raffinose, lactose and celobiose. The biomass quantity may be increased in various ways. An important aspect in the increasing of the multiplication rate of the yeast cell…
Tipologías de consumidores de alcohol dentro de la práctica del botellón en tres ciudades españolas
2010
En este trabajo se entrevistó a 6.009 jóvenes que practican botellón (14-25 años) en tres ciudades de la Comunidad Valenciana, realizando un muestreo estratifi cado de centros de Secundaria, Bachiller,CF y Universidad. Se efectuó un análisis de conglomerados en dos fases con cada muestra con dos objetivos: identifi car tipologías de consumidores de alcohol en el botellón y realizar una validación cruzada de la solución obtenida. Las variables consideradas en los análisis fueron: sexo, grupo de edad (universitarios: U; estudiantes Secundaria: ES), realización o no de episodios intensivos de consumo, años practicando botellón y gramos de alcohol ingeridos. Los resultados muestran evidencia de…
Revista española de drogodependencias
2008
Resumen tomado de la publicación El presente estudio pretende examinar el papel predictivo de la percepción de la educación paterna por parte de los hijos, en el consumo de diferentes sustancias (alcohol, cannabis y tabaco) durante la adolescencia. Método: Se administró un cuestionario anónimo desarrollado para medir la cantidad de sustancias consumidas en una semana y el tipo de educación percibida de sus padres, así como diferentes variables personales. La muestra estaba compuesta por 1378 sujetos, con edades comprendidas entre los 13 y los 19 años. El análisis se realizó a través del Modelo de Regresión de Poisson. Resultados: El tipo de educación recibida parece influir en función de la…