Search results for "armo"
showing 10 items of 1364 documents
ChemInform Abstract: Electron Crystallography and Organic Materials with Non-Linear Optical Properties
2010
Results of electron microscopic studies of crystal structures of a number of bis-benzylidene cyclohexanones are presented. It is shown that some of these compounds are efficient crystalline non-linear optically active (NLO) chromophores with second harmonic generation (SHG) properties. Appropriately functionalized chromophores of this type can be used as a polycondensation comonomer to produce partly crystalline main-chain NLO-active polymers. Electron diffraction crystal structural data, obtained for very small crystals, allowed us to get reasonable estimations of macroscopic crystal NLO-coefficients, relating quantum-chemically calculated molecular first hyperpolarizability components to …
Quadratic Nonlinear Behaviour of Various Langmuir-Blodgett Molecules
1989
The Langmuir-Blodgett (L-B) technique is well known as a method of building-up ordered arrays of organic molecules, and especially as a means of imposing a noncentrosymmetric structure from molecules that crystallize in a centrosymmetric space group(1–3). L-B films for use in quadratic nonlinear optics can be ordered in a statistically noncentrosymmetric lattice. The method involves the compression of a mono-layer of the organic molecule, spread on top of a water surface, into a two-dimensional solid, followed by the repeated dipping of the substrate to be coated into and out of the subphase. Monolayers may be deposited onto the substrate both on immersion and withdrawal, resulting in a cen…
Second harmonic generation in ferroelectric liquid crystalline thiadiazole derivatives
1995
Navigating diversities: experiences of youths in one Singapore school
2021
Singapore has established a reputation as a country with social harmony. But in recent times, increasing reports on issues of social cohesion have begun to emerge in the media about tensions among ...
La consagración de los derechos fundamentales: de principios generales a texto fundacional de la Unión Europea
2014
<p>El autor argumenta que el reconocimiento formal de los derechos fundamentales como parte de los fundamentos comunes de la UE mediante la remisión a la Carta de los Derechos Fundamentales en el Tratado de Lisboa (otorgándole carácter vinculante y, por ende, elevando su rango y confiriéndole el mismo valor jurídico que los Tratados) ha proporcionado una mayor apariencia constitucional a la UE, pero no un nivel más generoso de protección y de disfrute de la ciudadanía. En efecto, además de haber prescindido de garantías específicas, la Carta de la UE ha introducido diversas asimetrías inaceptables, tales como la quiebra del principio de indivisibilidad (los derechos civiles y los soci…
Todo proceso creativo no es más que una pregunta."Nosotras, territorio que habla" : madres ante la impunidad y los crímenes de estado en Colombia
2019
“Nosotras. Territorio que habla” es la materialización creativa de la necesidad de denunciar, de testimoniar, de reflexionar desde la propia voz de tres madres, Luz Marina Bernal, María Ubilerma Sanabria y Lucero Carmona, cuyos hijos fueron ejecutados por el ejército colombiano entre el 2007 y el 2008. En este libro ellas comparten su experiencia de tantos años de injusticia. El relato de tan cruento capítulo en la historia de la violencia de un país, lo contamos a través del archivo personal de estas mujeres, de la necesidad de saber y de reclamar justicia, de la investigación, la denuncia, el posicionamiento político y el análisis común. Queremos compartir cómo está siendo esta experienci…
“The Right Amount of Odd”: Vocal Compulsion, Structure, and Groove in Two Love Songs from Around the World in a Day
2020
In this music-analytic interpretation of two love songs from Prince’s Around the World in a Day album, we investigate the properties of groove, arrangement, and vocality, all of which contribute to the artist’s inimitable signature. With a disciplinary grounding in musicology, we demonstrate ways whereby musical features are associated with meaning in recorded songs. Underlying the approach is the notion that it is in the music where Prince’s ingenuity mainly lies. The analysis is informed by an understanding of the technological ramifications of the process on the part of Prince and his audio engineer Susan Rogers.
KOMUNIKASI NIKLAS LUHMANN DALAM MEMBANGUN KERUKUNAN ANTAR UMAT BERAGAMA DI WILAYAH PERKOTAAN
2020
Religious plurality in the era of globalization is a necessity in the midst of cultural heterogeneity, religious expression and religion itself. Religious plurality has a very large potential and role in the process of integrating the development of the Indonesian nation in the future. However, on the other hand, religious plurality contains the potential for conflict and disintegration of the nation, because the dominance of the absolute truth claims of each religion so that emotions become the basis of interaction and communication. Therefore, communication becomes a pillar of religious harmony. To achieve religious harmony, this research uses a qualitative-descriptive method that puts wi…
Fast vibrational configuration interaction using generalized curvilinear coordinates and self-consistent basis
2010
In this paper, we couple a numerical kinetic-energy operator approach to the direct-vibrational self-consistent field (VSCF)/vibrational configuration interaction (VCI) method for the calculation of vibrational anharmonic frequencies. By combining this with fast-VSCF, an efficient direct evaluation of the ab initio potential-energy surface (PES), we introduce a general formalism for the computation of vibrational bound states of molecular systems exhibiting large-amplitude motion such as methyl-group torsion. We validate our approach on an analytical two-dimensional model and apply it to the methanol molecule. We show that curvilinear coordinates lead to a significant improvement in the VSC…
TENDENZE REALI E FINANZIARIE DEL BACINO MARMIFERO DI CUSTONACI E I PROCESSI DI COLLABORAZIONE E COMPETIZIONE DELLE IMPRESE LOCALI
2009
L’obiettivo che si intende perseguire è l’analisi del settore marmifero in Sicilia, con particolare riferimento al sistema di Custonaci, una delle realtà maggiormente rappresentative del comparto lapideo in Sicilia e che in letteratura è stato analizzato per verificarne elementi di natura distrettuale. Il comparto marmifero è insieme a quello agroalimentare, uno dei pochi settore orientati alla internazionalizzazione. Nell’ultimo decennio, tuttavia, a causa dell’influenza esercitata dai conflitti medio orientali e dal rafforzamento dell’euro nei confronti del dollaro, il comparto ha attraversato una profonda crisi, aggravata da fattori strutturali quali l’eccessiva frammentazione dell’offer…