541 research outputs found
Consumption dynamics in general equilibrium : a characterisation when markets are incomplete
No full textWe introduce a methodology for analysing infinite horizon economies with two agents, one good, and incomplete markets. We provide an example in which an agent’s equilibrium consumption is zero eventually with probability one even if she has correct beliefs and is marginally more patient. We then prove the following general result: if markets are effectively incomplete forever then on any equilibrium path on which some agent’s consumption is bounded away from zero eventually, the other agent’s consumption is zero eventually–so either some agent vanishes, in that she consumes zero eventually, or the consumption of both agents is arbitrarily close to zero infinitely often. Later we show that (a) for most economies in which individual endowments are finite state time homogeneous Markov processes, the consumption of an agent who has a uniformly positive endowment cannot converge to zero and (b) the possibility that an agent vanishes is a robust outcome since for a wide class of economies with incomplete markets, there are equilibria in which an agent’s consumption is zero eventually with probability one even though she has correct beliefs as in the example. In sharp contrast to the results in the case studied by Sandroni (2000) and Blume and Easley (2006) where markets are complete, our results show that when markets are incomplete not only can the more patient agent (or the one with more accurate beliefs) be eliminated but there are situations in which neither agent is eliminated
Consumption Dynamics in General Equilibrium : A Characterisation when Markets are Incomplete
No full textWe introduce a methodology for analysing infinite horizon economies with two agents, one good, and incomplete markets. We provide an example in which an agent’s equilibrium consumption is zero eventually with probability one even if she has correct beliefs and is marginally more patient. We then prove the following general result: if markets are e?ectively incomplete forever then on any equilibrium path on which some agent’s consumption is bounded away from zero eventually, the other agent’s consumption is zero eventually–so either some agent vanishes, in that she consumes zero eventually, or the consumption of both agents is arbitrarily close to zero infinitely often. Later we show that (a) for most economies in which individual endowments are finite state time homogeneous Markov processes, the consumption of an agent who has a uniformly positive endowment cannot converge to zero and (b) the possibility that an agent vanishes is a robust outcome since for a wide class of economies with incomplete markets, there are equilibria in which an agent’s consumption is zero eventually with probability one even though she has correct beliefs as in the example. In sharp contrast to the results in the case studied by Sandroni (2000) and Blume and Easley (2006) where markets are complete, our results show that when markets are incomplete not only can the more patient agent (or the one with more accurate beliefs) be eliminated but there are situations in which neither agent is eliminated. JEL Codes: D52 ; D61
Steam and KOH Activated Carbons from Peach Stones
No full textPeach-stone-based activated carbons were prepared by using steam and KOH activation at 800 degrees C. The effects of solid/liquid phase KOH and steam activation, alkali and acidic pre-treatment, and also single-step activation on activated carbon properties were investigated comprehensively. The activated carbon produced by solid phase KOH impregnation showed the highest surface area of 835 m(2)/g and micropore volume of 0.412 cm(3)/g. Besides, single-step steam activation produced a highly microporous carbon having a relatively high surface area of 608 m(2)/g and micropore volume of 0.331 cm(3)/g. Peach-stone-based activated carbons with well-developed pore structure and functional properties were achieved, comparable to the commercial carbon, CPG-LF (Chemviron Carbon). The produced carbons were tested for Chromium (VI) removal from aqueous solution. Some of the activated carbons showed higher Chromium (VI) adsorption capacity than commercial activated carbon, CPG-LF (Chemviron Carbon)
A comparison study of peach stone and acrylonitrile-divinylbenzene copolymer based activated carbons as chromium(VI) sorbents
No full textTwo activated carbons were produced by using two different precursor peach stone and acrylonitrile-divinylbenzene copolymer Peach stone based activated carbon was produced by single step steam activation at 800 degrees C polymer based activated carbon was prepared in successive two stages air oxidation at 300 C and final carbonization at 850 C under inert atmosphere Produced carbons showed typical Type 1 nitrogen adsorption isotherms Peach stone based activated carbon has 608 m(2)/g of surface area and 0 331 cm(3)/g of micropore volume while polymer based carbon has 579 m(2)/g of surface area and 0 234 cm(3)/g of micropore volume Boehm s titration results and Fourier transform infrared spectra indicated that the produced carbons possess acidic oxygen functionalities mainly in phenolic form Polymer based activated carbon has 7 12 mmol of nitrogen/g because of the pyridine type groups in the main structure The removal of Cr(VI) from aqueous solutions by activated carbon has been investigated as a function of solution pH The maximum adsorption capacities were obtained at pH 2 in both cases and the maximum capacities were 143 mg/g 83 mg/g and 150 mg/g for peach stone based polymer based and commercial activated carbons respectivel
Hepatitis viral 1991: hepatitis C
No full textEn los últimos 20 años, se han desarrollado múltiples pruebas serológicas que han permitido la identificación de la mayoría de las causas que producen la hepatitis viral
A progress report on the development of the CsI-RICH detector for the ALICE experiment at LHC
No full textThe particle identification in ALICE (A Large Ion Collider Experiment) at LHC will be achieved by two complementary systems based on time-of-flight measurement, at low p(t), and on the Ring Imaging Cherenkov (RICH) technique, at p(t) ranging from 2 to 5 GeV/c, respectively. The High Momentum PID (HMPID) system will cover similar to 5% of the phase space, the single-arm detector array being composed by seven 1.3 x 1.3 m(2) CsI-RICH modules placed at 4.7 m from the interaction point where a density of about 50 particles/m(2) is expected. A 1 m(2) prototype, 2/3 of HMPID module size, has been successfully tested at the CERN/PS beam where 18 photoelectrons per event have been obtained with 3 GeV/c pions and 10 mm liquid C6F14 radiator. Mechanical problems related to the liquid radiator vessel construction have been solved and the prototype, fully equipped, will be tested at the CERN/SPS to investigate the PID capability in high particle density events. In this report, after an introductory discussion on the requirements for PID in ALICE, the HMPID prototype is described and the main results of beam tests on large area CsI photocathodes, operated in RICH detectors, are even. (C) 1998 Elsevier Science B.V. All rights reserved
Variación del MHC-B en Líneas de pollos Campero INTA y en Pollos Parrilleros y su correlación con peso vivo
No full textFil: Remolins Crolla, José Santiago. Universidad Nacional de Río Negro. Medicina Veterinaria. Río Negro, Argentina.This paper details the research tasks related to the Major Histocompatibility Complex-B (MHC-
B) in birds, in which I was able to participate during my experience as a CIN fellowship, under the direction of Mg. Gabriela M. Iglesias. The variability of the MHC-B genes was analyzed through
a marker, LEI0258, strongly linked, in maternal (A and ES) and paternal (ES) lines that give rise
to the INTA Campero chicken (within the framework of PI 40- A-498 directed by Gabriela
Iglesias). In addition, a sample of broilers was genotyped using LEI0258 in order to establish an
association between LEI0258 marker and the live weight (LW) of the animals. This group of birds
was part of a trial directed by Dra. Belén Buglione, within the framework of PI 40-A-614. As a
result, 6 alleles and 18 genotypes were obtained in the different populations that give rise to the
Campero INTA, the most variable being the ES line, followed by the A line and the least variable,
the AS line. The allele with the highest frequency was that of 381pb. On the other hand, in the
broiler chicken trial, the analysis indicated an association trend (p<0.1) between the 357/381
genotype and a higher LW, while the 295/381, with lower LW (it was observed a difference of
460 g). Finally, the model used showed that the *357 allele (frequency 16.7 %) would have a
positive association and the 205 allele (frequency 6.7 %) had a negative association (p<0.05) with
PV. From the analysis it emerges that the frequency of the alleles with positive association for the
PV characteristic (357 and 381 bp) represent approximately 50 % of the alleles in the population
studied, so these variants could be positively valued in the development of the selection plan.En el presente trabajo se detallan las tareas de investigación relacionadas al Complejo Mayor de
Histocompatibilidad-B (CMH-B) en aves, en las que pude participar durante mi experiencia como
becario CIN, bajo la dirección de Mg. Gabriela M. Iglesias.
Se analizó la variabilidad de los genes del CMH-B a través de un marcador, LEI0258, fuertemente
ligado, en líneas maternas (A y ES) y paternas (ES) que dan origen al pollo Campero INTA (en el
marco del PI 40-A-498 dirigido por Gabriela Iglesias). Además, se genotipificaron mediante
LEI0258 los pollos parrilleros experimentales (broilers) de manera de poder establecer una
asociación entre dicho marcador y el peso vivo (PV) de los animales. Este grupo de aves formaba
parte de un ensayo dirigido por la Dra. María Belén Buglione, en el marco del PI 40-A-614.
Como resultado, se obtuvieron 6 alelos y 18 genotipos en las distintas poblaciones que dan origen
al Campero INTA, siendo las más variable la línea ES, seguida de la línea A y la menos variable
la línea AS. El alelo de mayor frecuencia fue el de 381pb.
Por otro lado, en el ensayo de los pollos parrilleros, el análisis indicó una tendencia de asociación
(p<0,1) entre el genotipo 357/381 y un mayor PV, mientras que el 295/381, con menor PV (se
observó una diferencia de 460 g). Finalmente, el modelo utilizado evidenció que el alelo *357
(frecuencia de 16,7%) tendría asociación positiva y el alelo 205 (frecuencia 6,7%) asociación
negativa (p<0,05) con PV. Del análisis surge que la frecuencia de los alelos con asociación positiva
para la característica de PV (357 y 381 pb) representan aproximadamente el 50 % de los alelos en
la población estudiada, por lo que dichas variantes podrían ser valoradas positivamente en el
desarrollo del plan de selección
Production of hyperons and anti-hyperons in heavy-ion collisions at SPS: Experiments at the CERN Omega spectrometer
No full text35.9> g , R.A. Loconsole b , G. Løvhøiden j , M. Lupt'ak g , I. M'acha n , V. Mack i , V. Manzari b , P. Martinengo e , M.A. Mazzoni o , F. Meddi o , A. Michalon r , M.E. Michalon-Mentzer r , P. Middelkamp e , M. Morando k , M.T. Muciaccia b , E. Nappi b , F. Navach b , K. Norman d , B. Osculati f , B. Pastirc'ak g , F. Pellegrini k , K. P'iska m , F. Posa b , E. Quercigh e , R.A. Ricci h , G. Romano p , G. Rosa p , L. Rossi f , H. Rotscheidt e , K. Safar'ik e , S. Saladino
, \Xi and\Omega production in Pb-Pb collisions at 158 A
No full textLøvhøiden j , M. Lupt'ak g , V. Mack i , V. Manzari b , P. Martinengo e , M.A. Mazzoni n , F. Meddi n , A. Michalon q , M.E. Michalon-Mentzer q , P. Middelkamp e , M. Morando k , M.T. Muciaccia b , E. Nappi b , F. Navach b , P.I. Norman d , B. Osculati f , B. Pastirc'ak g , F. Pellegrini k , K. P'iska m , F. Posa b , E. Quercigh e , R.A. Ricci h , G. Romano o , G. Rosa o , L. Rossi f , H. Rotscheidt e , K. Safar'ik e , S. Saladino b , C. Salvo f , L. S'andor e;
WA97 results on strangeness production in lead-lead collisions at 158
No full texte , J.C. Lassalle e , V. Lenti b , Ph. Leruste l , J.A. Lien j , R. Lietava g , R.A. Loconsole b , L. Lopez e , G. Løvhøiden j , M. Luptak g , I. Macha n , V. Mack i , V. Manzari b , P. Martinengo e , M.A. Mazzoni o , F. Meddi o , A. Michalon r , M.E. Michalon-Mentzer r , P. Middelkamp e , M. Morando k , M.T. Muciaccia b , E. Nappi b , J.L. Narjoux l , F. Navach b , K. Norman d , B. Osculati f , B. Pastircak g , F. Pellegrini k , K. Pska m , F. Posa b , E. Querci
- …
