Search results for "ERES"
showing 10 items of 2337 documents
Centralizētas uzdevumu uzskaites sistēmas ieviešanas iespējas uzņēmumā
2020
Centralizētās uzdevumu uzskaites sistēmas mērķis, ir nodrošināt ērtu, vienkārši pārskatāmu kopskatu par uzdevumiem, pieteikumiem vai citiem apstrādājamiem resursiem, kuri ir piešķirti konkrētam lietotājam gala sistēmās. Bakalaura darba „Centralizētas uzdevumu uzskaites sistēmas ieviešanas iespējas uzņēmumā” izstrādes laikā apkopotas galvenās sistēmas prasības, izpētīti gatavie risinājumi, kas nodrošina nepieciešamo funkcionalitāti, izpētītas pielietojamās tehnoloģijas starpsistēmu komunikācijas nodrošināšanai, izvēlēts datubāzes veids un piedāvāti divi realizācijas piedāvājumi, balstoties uz izpētītajiem risinājumiem. Darbs satur 38 lappuses, 16 attēlus, 1 tabulu, 19 avotus.
Historias de vida de mujeres afincadas de forma permanente en situación de exclusión social
2016
Este artículo presenta parte de los resultados de un trabajo de campo etnográfico realizado en distintos centros de Servicios Sociales Especializados para mujeres de la Generalitat Valenciana. Su objetivo es conocer los tipos de violencia y los factores de exclusión social que subyacen en las historias de v ida de las mujeres institucionalizadas. La metodología de investigación utilizada ha sido de índole cualitativa. Se ha realizado observación participante y entrevistas tanto informales como biográficas que, junto con documentos personales e informes sociales, han permitido elaborar 15 historias de vida. Aunque en esta aproximación tan sólo se analizan las cuatro afincadas en la situación…
Ceramica a vernice nera di età ellenistica da siti della Sicilia occidentale. Considerazioni tipologiche e analisi archerometriche
2006
Il contributo intende illustrare i risultati che è possibile raggiungere nell’esaminare dal punto di vista archeometrico precise forme ceramiche – e non semplici frammenti – a vernice nera, integrando le osservazioni di natura tipologica con i dati ottenuti dalla caratterizzazione mineralogica, petrografica e chimica degli impasti. I campioni provengono da quattro diversi siti della Sicilia nord-occidentale, e appartengono a due forme ben distinte, una coppa-skyphoide di produzione locale/regionale di fine IV-III sec. a.C., ed una patera di II-I sec. a.C. prodotta prevalentemente in Campana A, ma imitata forse anche da officine locali. Le analisi hanno permesso di discriminare in modo ogget…
Telomere length in cervical smears of women with high-risk human papillomavirus (HPV HR)
2018
Magnetic phase transition and magnetic bistability in oxamato-based CoIICuII bimetallic MOF thin films
2019
Abstract Thin films of an anionic oxamato-bridged cobalt(II)–copper(II) 3D MOF have been growth at 120 °C in DMSO through a one-pot reaction from Co(NO3)2·6H2O and (Me4N)2[Cu(2,6-Et2pa)2]·6H2O (2,6-Et2pa = N-2,6-diethylphenyloxamate) over Si(111) surfaces functionalized with carboxylic acid terminating groups. These heterobimetallic CoII2CuII3 MOF thin films (2) of about ten nanometers thickness show a ferrimagnetically ordered phase below ca. 10 K with a relatively large magnetic hysteresis similar to that of the bulk material of formula (Me4N)2[Co2Cu3(2,6-Et2pa)6]·5H2O (1).
The First 1,3,4‐Oxadiazole Based Dinuclear Iron(II) Complexes Showing Spin Crossover Behavior with Hysteresis
2015
Three new dinuclear complexes [FeII2(μ-L)2]X4 (L is the bis-tridentate ligand 2,5-bis{[(2-pyridylmethyl)amino]methyl}-1,3,4-oxadiazole and X = ClO4–, BF4– and CF3SO3–) have been synthesized and fully characterized by single-crystal X-ray diffraction, Mossbauer spectroscopy and magnetic susceptibility measurements. Upon cooling, a trapped [high-spin–low-spin] state of the iron(II) centres is detected. Depending on the counterion, a pronounced thermal hysteresis is found. In one case, it was possible to observe a space group change that accompanies the spin transition. This is the first system showing spin crossover based on an oxadiazole ligand.
Characterization of waxes used in pictorial artworks according to their relative amount of fatty acids and hydrocarbons by gas chromatography.
2005
A study attempted to characterize natural waxes used in pictorial works of art was carried out by means of gas chromatography. The analytical treatment requires prior hydrolysis of the waxes to release the fatty acids (FA) (myristic (myr), palmitic (pal), oleic (ole), stearic (ste), araquidic (ara), behenic (beh), lignoceric (lig), cerotic (cer)) from the main esters of the waxes. The formation of volatile derivatives of the fatty acids was carried out by derivatization with ethyl choroformate (ECF). This derivatization reagent was chosen due to the speed, safety and quantitativity of the reaction. The analyzed hydrocarbons were n-eicosane, n-heneicosane, n-docosane, n-tricosane, n-tetracos…
Optical tweezing electrophoresis of isolated, highly charged colloidal spheres
2001
Abstract We report on a novel optical tweezing experiment measuring the electrophoretic mobility μ of highly charged spherical particles suspended in water at volume fractions Φ≤2×10 −7 . At deionised conditions μ =2.5×10 −8 m 2 V −1 s −1 , it decreases further upon increasing the salt concentration c . We compare our data to measurements at larger Φ, where generally much larger μ and a qualitatively different dependence on the salt concentration are observed. To characterise the dependence on Φ we performed measurements at no added salt. There the mobility increases in the unordered state but stays constant at μ =6.8×10 −8 m 2 V −1 s −1 as the system develops fluid order. In the ordered re…
Properties and interactions – melting point of tribromobenzene isomers
2021
The melting points of tribromobenzene isomers are correlated with the number, nature and distribution of intermolecular interactions in their structures.
Peptide-Controlled Assembly of Macroscopic Calcium Oxalate Nanosheets
2019
The fabrication of two-dimensional (2D) biomineral nanosheets is of high interest owing to their promise for applications in electronics, filtration, catalysis, and chemical sensing. Using a facile approach inspired by biomineralization in nature, we fabricate laterally macroscopic calcium oxalate nanosheets using β-folded peptides. The template peptides are composed of repetitive glutamic acid and leucine amino acids, self-organized at the air-water interface. Surface-specific sum frequency generation spectroscopy and molecular dynamics simulations reveal that the formation of oxalate nanosheets relies on the peptide-Ca 2+ ion interaction at the interface, which not only restructures the …