Search results for "stil"
showing 10 items of 1452 documents
The influence of tin compounds on the dynamic properties of liposome membranes: A study using the ESR method
2005
AbstractThe influence of organic and inorganic compounds of tin on the dynamic properties of liposome membranes obtained in the process of dipalmitoylphosphatidylcholine (DPPC) sonication in distilled water was investigated. This was carried out by means of the spin ESR probe method. The probes were selected in such a way as to penetrate different areas of the membrane (a TEMPO probe, 5-DOXYL stearic acid, 16-DOXYL stearic acid). Four compounds of tin were chosen: three organic ones, (CH3)4Sn, (C2H5)4Sn and (C3H7)3SnCl, and one inorganic one, SnCl2. The investigated compounds were added to a liposome dispersion, which was prepared prior to that. The concentration of the admixture was change…
Consumo de alcohol, tabaco, cannabis y otras drogas en la adolescencia: efectos de la familia y peligro del barrio
2015
El objetivo de este estudio fue analizar los factores de protección o riesgo de los estilos educativos parentales para el consumo de alcohol, tabaco, cannabis y otras drogas, considerando la interacción de los estilos parentales con la peligrosidad del barrio. A partir de las respuestas de 628 adolescentes, 369 mujeres (58.8%) y 259 hombres (41.2%) entre 15 y 17 años (M = 16.03 años, DT = 0.79 años), se clasificaron las familias según el estilo educativo (autorizativo, indulgente, autoritario o negligente) y el riesgo percibido en el barrio (alto o bajo). Los resultados no mostraron interacciones, pero sí efectos principales de los estilos educativos y del riesgo percibido. Los adolescentes…
Kaanoninvartijat : ikonimaalauksen valvonta ja opetus Suomessa 1960- ja 1970-luvuilla
2008
Generation terrorists : Manic street preachers -yhtyeen musiikin poliittisuus ja poliittisuuden muutos vuosina 1992-2001
2011
Tutkimuksen tehtävänä on selvittää, kuinka poliittiset vaikutuspyrkimykset ilmenevät Manic Street Preachers -yhtyeen vuosien 1992-2001 singlejulkaisujen musiikissa eli sanoituksissa, sävellyksissä, esityksessä ja levytyksessä. Tarkoituksena on tarkastella myös, miten yhtye edustaa protestilaulugenreä ja kuinka yhtyeen poliittisuus on muuttunut kaupallisen menestymisen sekä ajallisen muutoksen myötä. Lähestyn politiikkaa ja siihen liittyvää valta-aspektia tässä tutkimuksessa vaikutusvallan näkökulmasta. Sanoituksissa ilmenevää vaikutusvaltaa erittelen Chaïm Perelmanin argumentaatiotekniikkojen jaottelun avulla. Sanoitusanalyysiin yhdistän analyysin musiikillisista korostuselementeistä, jotka…
Evaluation of the 2-Methoxyethanol as Entrainer in Ethanol–Water and 1-Propanol–Water Mixtures
2013
In this paper, 2-methoxyethanol (commercially known as methyl cellosolve) is proposed as a potential entrainer for extractive distillation processes involving water–alcohol mixtures. The two alcohols studied in this work are ethanol and 1-propanol. Thereby, isobaric vapor–liquid equilibrium (VLE) data at atmospheric pressure have been measured for the ternary systems ethanol + water + 2-methoxyethanol and 1-propanol + water + 2-methoxyethanol. Moreover, data of the binary systems formed by the 2-methoxyethanol and each of the other chemicals used (ethanol, water, 1-propanol) have been obtained. The well-known local composition models Wilson, UNIQUAC, and NRTL have been used to correlate bin…
Volatile components of dry-cured ham
1991
The volatile components of dry-cured ham were isolated by vacuum distillation and analyzed by gas chromatography-mass spectrometry. The structures of 76 molecules were identified by mass spectrometry, cochromatography, or measured Kovats indices. The compounds identified may come from the catabolism of the main constituent parts of the meat (glucids, lipids and protids) during the curing of the hams, from the pig feed, or from technological processes. The volatile compounds extracted from 50 g of ham according to the technique described correspond to a chromatographical surface equivalent to 0.12 mg of the dodecane internal standard, or approximately 2.4 ppm of the weight of the sample. Fla…
Menstrual problems and lifestyle among Spanish university women
2020
Menstrual problems affect many young women worldwide, conditioning both their academic performance and quality of life. This study sought to analyse the prevalence of menstrual problems and their possible relationship with lifestyle among Spanish university women, as part of a research project (UniHcos Project) involving a cohort of 11 Spanish universities with 7208 university students. A descriptive analysis was performed using the bivariate chi-square test and the Student&rsquo
The Vibrio choleare haemolysin anion channel is required for cell vacuolation and death
2002
SummarySeveral strains of Vibrio cholerae secrete ahaemolytic toxin of 63kDa, termed V. cholerae cytolysin (VCC). This toxin causes extensive vacuo-lation and death of cells in culture and forms ananion-selective channel in planar lipid bilayers and incells. Here, we identify inhibitors of the VCC anionchannel and show that the formation of the anionchannel is necessary for the development of the vacuoles and for the cell death induced by this toxin. Using markers of cell organelles, we show that vacuoles derive from different intracellular com-partments and we identify the contribution of lateendosomes and of the trans -Golgi network in vacuolebiogenesis.Introduction The Gram-negative bact…
Kombinēto tekstildarbu apguve mājturībā un tehnoloģijās 7. klasē
2016
Darba autore mājturībā un tehnoloģijās tēmas „Kombinētie tekstildarbi” apgūšanai 7.klasē piedāvā darināt tekstila lelli. Lai skolēni veiksmīgi varētu apgūt „Kombinēto tekstildarbu” pamatprasmes, autore apkopo dažādu teorētisko literatūru, pēta pusaudžu vecumposma īpatnības, analizē Izglītības standartu, veic pedagoģiskā izmēģinājuma darbību skolā, apkopo skolēnu darbu rezultātus, veic analīzi un izdara secinājumus. Autore vairākus gadus ir nodarbojusies ar tekstila leļļu izgatavošanu un uzskata, ka motivējošs, vecumposmam atbilstošs un interesants uzdevums 7. klases skolēnam veiksmīgāk un ātrāk ļauj apgūt nepieciešamās tekstildarbu pamatprasmes. Lelles izgatavošanu pusaudzis uztver kā daļu …
Mujer y representación política institucional en la Comunidad Valenciana. 1977-1995. Diputadas, ministras y cargos institucionales
2014
“Mujer y representación política institucional en la Comunidad Valenciana. 1977-1995. Diputadas, ministras y cargos institucionales” es la primera parte de un trabajo de documentación para un capítulo de “La democracia en la Comunidad Valenciana. Partidos, elites políticas, elecciones y programas políticos”. “Mujer, poder político y democracia paritaria”. Se recoge el papel de la mujer en la vida política de la Comunidad Valenciana en la democracia actual, desde 1977. Es documentación sin elaborar, pero que aporta datos de la presencia de la mujer en las instituciones, partidos y sindicatos. Cuando este completa será una parte de la investigación referida, y de la que ya hay dos publicacion…