Search results for "Cane"
showing 10 items of 489 documents
CCDC 2041031: Experimental Crystal Structure Determination
2021
Related Article: Goulielmina Anyfanti, Antonio Bauzá, Lorenzo Gentiluomo, João Rodrigues, Gustavo Portalone, Antonio Frontera, Kari Rissanen, Rakesh Puttreddy|2021|Frontiers in Chemistry|9||doi:10.3389/fchem.2021.623595
Derechos y libertades en Bosnia y Herzegovina: el modelo político salido de Dayton y sus consecuencias para los ciudadanos
2017
Cuando han pasado veinticinco años del inicio la guerra que asoló Bosnia y Herzegovina, y las heridas en el territorio aún están por cicatrizar, el sistema político y constitucional surgido del Acuerdo de Paz de Dayton (1995) tiene pendiente aún su consolidación y su plena legitimación, pues el documento internacional que dio lugar a una paz simulada que le evitaba al país más muerte, lo sumía al mismo tiempo en un tortuoso pozo de contradicciones políticas con un marco institucional débil, derruido, y perjudicial para el ejercicio de los plenos derechos de sus ciudadanos. Y es que, con una estructura sin precedentes en el continente europeo, Bosnia y Herzegovina se presenta como un Estado …
Il cane nella religiosità della Sicilia antica dalle popolazioni preelleniche al primo cristianesimo
2004
A partire dalla funzione di operatori simbolici esercitata dagli animali nelle culture umane si prende in esame il ruolo svolto dal cane nella storia religiosa della Sicilia antica dall'eta' prostostorica fino all'emergere del cristianesimo nell'isola. pur attraverso codici differenti si sottolinea l'esigenza di controllare in forma simbolica la precarietà del mondo, naturale e sociale: a questo obiettivo il cane partecipa efficacemente anche attraverso il ruolo giocato nei rituali.
Litoral Mediteráneo : el nivel de satisfacción turístico en la provincia de Valencia
2019
Se evalúa el nivel de satisfacción en turistas y visitantes de Canet d’en Berenguer, Cullera y Oliva, municipios pertenecientes a la provincia de Valencia en la Comunidad Valenciana, España, mediante una encuesta de satisfacción que se aplicó a 669 individuos. También, de forma abreviada, se presenta la oferta turística de estos destinos turísticos, basados en datos del año 2017, donde se evidencia preferencia por los destinos turísticos de playa, con una marcada presencia de turistas nacionales que desarrollan actividades familiares. Además, se comprueba que el nivel de satisfacción con los destinos es elevado, con intensión de volver, incluso en períodos hiemales. Se recomienda la incorpo…
Stabilisation of LDPE cross-linked in the presence of peroxides III. Mass spectrometric study of chemical changes taking place in the n-octadecane–di…
2000
Abstract An attempt was made to identify the products of the reaction between dicumyl peroxide and Irganox 1081, carried out in n -octadecane (saturated hydrocarbon), in conditions of fast decomposition of the peroxide (180°C, 5 min). Mass spectrometry (MS) was employed to find m/z values of molecular and fragment ions in analyses of the components ( n -octadecane, dicumyl peroxide, Irganox 1081) and of the following systems: n -octadecane–dicumyl peroxide, n -octadecane–Irganox 1081 and n -octadecane–dicumyl peroxide–Irganox 1081, after holding them at a temperature of 180°C for 5 min. The tendency of sulphur in Irganox 1081 to oxidise, specifically in the presence of dicumyl peroxide, was…
1988
Poly(n-decyl methacrylate), a statistical copolymer of ethylene and propylene, and a diblock copolymer of styrene and hydrogenated butadiene were studied as representatives of various kinds of viscosity-index (VI) improvers. Essomarcol 52 and AF 1 from Schindler served as base-oils, toluene and 1-phenyl dodecane were also studied. By means of viscosity measurements in the temperature interval from 37.8 to 98.9°C up to a concentration of typically 1 wt.-% polymer, the viscosity indices of the different systems and the corresponding intrinsic viscosities, Huggins coefficients, and activation energies of flow, E≠, were determined. The discussion of the obtained experimental material demonstrat…
Determination of the Pore Topology of Zeolite IM-5 by Means of Catalytic Test Reactions and Hydrocarbon Adsorption Measurements
2000
Abstract The pore topology of a recently synthesized zeolite IM-5 has been determined by means of catalytic test reactions, i.e., n -decane hydroisomerization–cracking, m -xylene isomerization–disproportionation, n -hexadecane isodewaxing, and adsorption–microcalorimetry of molecules with different sizes and shapes ( n -hexane, toluene, m -xylene, and 1,3,5 trimethylbenzene). It has been found that the channel network consists of a system of unidirectional 10 MR with lobes or side pockets, or crossing 10 membered ring pores with a pore diameter somewhat smaller than those in ZSM-5. This structure offers interesting shape selectivity features for catalytic reactions.
Formation of α-ω(4,7,10,13-pentaoxa-16-azacyclooctadecane) hexadecane micelles in aqueous solution – effect of HCl addition
2003
The structure of aggregates of a new bolaform surfactant [α-ω (4,7,10,13-pentaoxa-16-azacyclooctadecane) hexadecane] in neat aqueous solution has been investigated by small-angle neutron scattering. Preliminary data analysis unequivocally indicates that globular micelles are formed. This finding has been confirmed by the analysis of data obtained upon addition of hydrochloric acid. The observed significant reduction of micelle aggregation number has been attributed to the peculiar complexing ability of the two aza-crown ether units in the surfactant molecule; this is in line with information inferred from the complexation of ions into the non alkylated azacrown ethers. As a consequence of h…
Isobaric vapor-liquid equilibria for binary systems composed of octane, decane, and dodecane at 20 kPa
1996
Vapor−liquid equilibria were measured for binary systems of octane + decane, decane + dodecane, and octane + dodecane at 20.00 kPa using a recirculating still. The results are thermodynamically consistent according to the point-to-point consistency test, and deviation from ideal behavior is small for all systems.
New Synthesis oftrans-Disubstituted Cyclam Macrocycles – Elucidation of the Disubstitution Mechanism on the Basis of X-ray Data and Molecular Modeling
1998
A new way to synthesize trans-disubstituted cyclam tetraazamacrocycles 1 is reported. The synthesis proceeds in three steps via the tricyclic 1,4,8,11-tetraazatricyclo[9.3.1.14,8]hexadecane system 2, which can be selectively dialkylated and hydrolyzed under basic conditions to give the final product 1. An understanding of the reactivity, based on the X-ray experimental electrostatic potential and molecular modeling of the 1,4,8,11-tetraazatricyclo[9.3.1.14,8]hexadecane macrotricycle, has permitted the elucidation of a new reaction pathway leading to the trans-disubstituted cyclam.