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Now showing items 1-20 of 2606

1-Alkyl-4-ethoxythiocarbonyl-5-hydroxy-3-methylpyrazole: Synthesis, copper complexes and solvent extraction studies

Oliva A.; Molinari A.; Toro C. (2014-04-04)

1-Alkyl-4-ethoxythiocarbonyl-5-hydroxy-3-methylpyrazole, HETCP, (alkyl = n-octyl ; n-dodecyl) were prepared in high yield by the reaction of 1-alkyl-3-methyl-2-pyrazolin-5-one with bis (ethoxythiocarbonyl)sulfide and sodium ...
1,5-Bis(4- dithiocarboxylate-5-hydroxypyrazolyl)pentane derivatives of 5-pyrazolones

Avila C.; Flores M.F.; Molinari A.; Oliva A. (2014-04-04)

3-Methyl-l-phenyl-2-pyrazolin-5-one 1b and 1-dodecyl-3-methyl-2-pyrazolin- 5-one 1c react with carbon disulfide and 1,5-dibromopentane in the presence of sodium acetate in dimethylformamide or n-butyllithium in tetrahydrofuran ...
The 1647 earthquake in central Chile as an intraplate event: another threat to metropolitan Chile

Cisternas M. (2014-04-04)

The May 13, 1647 earthquake, the larger catastrophe in the colonial history of central Chile, is considered as the second event of the inter-plate earthquakes series that has occurred at regular intervals in this part of ...
The 1960 tsunami on beach-ridge plains near maullín, chile: Landward descent, renewed breaches, aggraded fans, multiple predecessors

Atwater B.F.; Cisternas M.; Yulianto E.; Prendergast A.L.; Jankaew K.; Eipert A.A.; Starin Fernando W.I.; Tejakusuma I.; Schiappacasse I.; Sawai Y. (2014-04-04)

The Chilean tsunami of 22 May 1960 reamed out a breach and built up a fan as it flowed across a sparsely inhabited beach-ridge plain near Maullín, midway along the length of the tsunami source. Eyewitnesses to the flooding, ...
A 2-level metaheuristic for the set covering problem

Valenzuela C.; Crawford B.; Soto R.; Monfroy E.; Paredes F. (2014-04-04)

Metaheuristics are solution methods which combine local improvement procedures and higher level strategies for solving combinatorial and nonlinear optimization problems. In general, metaheuristics require an important ...
30 casas en Playa Ancha: desarrollo constructivo / Walter Gropius: estudio programático / 2 viviendas 1 casa: hipótesis arquitectónica

Exss Cid, Ursula (Pontificia Universidad Católica de Valparaíso. Programa Cybertesis, 2013-10-23)
3D extinction mapping using hierarchical bayesian models

Sale S.E. (2014-04-04)

The Galaxy and the stars in it form a hierarchical system, such that the properties of individual stars are influenced by those of the Galaxy. Here, an approach is described which uses hierarchical Bayesian models to ...
3D kinematics through the X-shaped Milky Way bulge

Vasquez S.; Zoccali M.; Hill V.; Renzini A.; Gonzalez O.A.; Gardner E.; Debattista V.P.; Robin A.C.; Rejkuba M.; Baffico M.; Monelli M.; Motta V.; Minniti D. (2014-04-04)

Context. It has recently been discovered that the Galactic bulge is X-shaped, with the two southern arms of the X both crossing the lines of sight at l = 0 and | b| > 4, hence producing a double red clump in the bulge ...
4-Methylthioamphetamine Increases Dopamine in the Rat Striatum and has Rewarding Effects In Vivo

Sotomayor-Zarate R.; Quiroz G.; Araya K.A.; Abarca J.; Ibanez M.R.; Montecinos A.; Guajardo C.; Nunez G.; Fierro A.; Moya P.R.; Iturriaga-Vasquez P.; Gomez-Molina C.; Gysling K.; Reyes-Parada M. (2014-04-04)

4-Methylthioamphetamine (MTA) is a phenylisopropylamine derivative whose use has been associated with severe intoxications. MTA is usually regarded as a selective serotonin-releasing agent. Nevertheless, previous data have ...
400 veces un café. Estudio, realización y montaje de la exposición. Muro-mueble. Estudio de un mobiliario para vivienda social

Fuentealba Carrasco, Paulina - Fuentes Moraga, Daniela - Zuazola De Peña, Josefina (Pontificia Universidad Católica de Valparaíso. Programa Cybertesis, 2013-10-23)
A-posteriori error analysis to the exterior Stokes problem

Barrientos M.A.; Maischak M. (2014-04-04)

We analyze the coupling of the dual-mixed finite element method with the boundary integral equation method. The result is a new mixed scheme for the exterior Stokes problem. The approach is based on the introduction of ...
About the payment order procedure in comparative procedural law in Europe: Characterization, essential and incidental elements

Perez Ragone A.J. (2014-04-04)

Chile trends to reform his Civil Procedure Code. The order for payment is an important mechanism to give the citizens, businesses and Judiciary a alternative to ordinary proceeding to achieve a execution. This procedure ...
About the problem of time in human reality in the thought of Zubiri

Espinoza Lolas R.A. (2014-04-04)

What we are investigating in this article is the great importance of the theme of time in relation to human reality according to the thought of Zubiri. One has to say radically that intelligence is «temporal». Intelligence ...
The Absolute Configuration of the Sex Pheromone of the Citrophilous Mealybug, Pseudococcus calceolariae

Unelius C.R.; El-Sayed A.M.; Twidle A.; Bunn B.; Zaviezo T.; Flores M.F.; Bell V.; Bergmann J. (2014-04-04)

The absolute configuration of the sex pheromone of the citrophilous mealybug, Pseudococcus calceolariae, was determined to be (1R,3R)-[2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropyl]methyl (R)-2-acetoxy-3-methylbutanoate. ...
The academic and professional corpus of PUCV-2006 Spanish: Similarities and differences of the identified academic and professional genres

Parodi G. (2014-04-04)

The elusive concepts underlying the term genre offer different alternative conceptions. This may confuse the novice, but also the expert. This article addressed a discussion on the contemporary conceptions of discourse ...
Academic text classification based on lexical-semantic content

Venegas R. (2014-04-04)

The aim of this research is to classify, using and comparing two automatic classification methods, the academic texts included in the PUCV-2006 Corpus belonging to the Fondecyt 1060440 research project. The methods are ...
Accelerating black hole in 2+1 dimensions and 3+1 black (st)ring

Astorino M. (2014-04-04)

A C-metric type solution for general relativity with cosmological constant is presented in 2+1 dimensions. It is interpreted as a three-dimensional black hole accelerated by a strut. Positive values of the cosmological ...
Acceptability of dehydrated legume soups with the addition of flavor enhancers (Umami)

Garrido B F.; Jara M K.; Wittig de Penna R E.; Dondero C M.; Mendoza G S.; Gonzalez Z S. (2014-04-04)

The enhancer effect of gluatamate monosodium (MSG) flavor was evaluated and its synergistic action with 5'-ribonucleotides: inosona ribonucleotides 5'-monophosphate (IMP) and guanosine monophosphate (GMP) in dehydrated ...
Acceptability of dehydrated legume soups with the addition of flavor enhancers (Umami)

Garrido B F.; Jara M K.; Wittig de Penna R E.; Dondero C M.; Mendoza G S.; Gonzalez Z S. (2014-04-05)

The enhancer effect of gluatamate monosodium (MSG) flavor was evaluated and its synergistic action with 5'-ribonucleotides: inosona ribonucleotides 5'-monophosphate (IMP) and guanosine monophosphate (GMP) in dehydrated ...
Accesibilidad y uso de recursos virtuales en Docencia Universitaria. Estudio de un caso PUCV

Toro Burgos, Ricardo (Pontificia Universidad Católica de Valparaíso. Programa Cybertesis, 2013-10-23)

Now showing items 1-20 of 2606

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