213,304 research outputs found
Mateo S. Perez (1908-1995) seated with plants, undated
No full textPhotograph of Mateo S. Perez (September 19, 1908 - December 25, 1995) near a window surrounded by plants, undated. He was from San Mateo, Rizal, Philippines and arrived in Washington, D.C. in 1929. He was married to Consuelo Perez and had a daughter, Amelita (Perez) Mondonedo. An article with excerpts from an interview between Mateo Perez and Rita Cacas can be found on the Rita M. Cacas Foundation website here: http://rmcacas.foundation/1994-washington-post-article.html. This photograph may have been taken 1993-1994, during Rita Cacas's interview with Mr. Perez
ON THE MASS DISCREPANCY OF THE CEPHEID STARS
No full textIn this paper we examine the problem of the mass discrepancy of Cepheid stars in the young, rich LMC cluster NGC 2157 observed by Mateo and coworkers, which is known to possess three Cepheids. The simultaneous fit of the color-magnitude diagram with theoretical simulations based on models for intermediate-mass stars incorporating either semiconvection or overshoot in the central cores, and with suited chemical composition (the evolutionary masses of the Cepheids are therefore automatically known), and the derivation of the pulsational masses from the Cepheid models of Chiosi & Wood allow us to show that the problem of mass discrepancy likely originates from the adoption of semiconvective models and insufficient accuracy in the determination of the mass by one of the two methods. When this is feasible, as in the ideal laboratory given by the young LMC clusters with Cepheids, the discrepancy no longer exists. Finally, an independent estimate of the distance modulus based on the equality between the evolutionary and pulsational mass of the Cepheid stars is presented. The new method gives a distance modulus in agreement with previous determinations
Geografía del Perú, obra póstuma del D. D. Mateo Paz Soldán,
No full text"El doctor Don Mateo Paz Soldán. Apuntes biográficos," signed Manuel Nicolás Corpancho: v. 1, p. [ix]-xviii.Vol. 2 has title: Compendio de geografía matemática, física y política."Noticia bibliográfica": v.1, p. [715]-723.Mode of access: Internet.MAIN; F3408.P3: v.2 has imprint: F. Didot
Acid hydrolysis of olive tree leaves: Preliminary study towards biochemical conversion
No full textOlive tree leaves, an abundant agricultural by-product without enough industrial market outlets, are presented in this study as a relevant resource of available carbohydrates to be chemically treated for monomeric sugar production. Characterization of two main granulometric fractions is the starting point for testing the specific effect and the relevance of three main factors (time, temperature, and sulfuric acid concentration) on diluted acid hydrolysis with respect to oligosaccharides, simple sugars, and fermentation inhibitory compounds production. The selected conditions (100°C, 90 min, and 6% w/w H2SO4) to perform the small scale hydrolytic process, considering response surface methodology (23 factorial design with center points), implied production of acetic acid and hydroxymethylfurfural in concentrations not exceeding 1.10 kg m-3 and 0.25 kg m-3, respectively. Thus, these experimental conditions were the reference framework to evaluate the effect of a meaningful scaling stage in a hydrolysis reactor, considering kinetic parameters based on hydrolysis rates and D-glucose and D-xylose generation
THE STAR FORMATION HISTORY OF THE LARGE MAGELLANIC CLOUD
No full textWe present deep photometric observations of stars in three fields of the Large Magellanic Cloud (LMC) and interpret these data using synthetic color-magnitude diagrams (CMDs) and luminosity functions (LFs) generated from the overshoot models of Bertelli et al., Bressan et al., and Aparicio et al. We can successfully model the field CMDs and LFs with a star formation rate that experienced a large increase (4 +/- 0.5) x 10(9) yr ago. The precise age of this "burst" depends sensitively on the characteristics of the models. Classical (i.e., nonovershoot) models yield a burst age about 2 x 10(9) yr younger than the value we obtain. An initial mass function with slope of 2.35 (the Salpeter value) and a mean field star metallicity of [Fe/H] approximately -0.7 are consistent with the photometric data and LFs. Furthermore, our primary conclusion, that is, the possibility of a single burst of star formation, depends on the distance modulus adopted for LMC. If (m - M)0 = 18.4, we find evidence for a single burst throughout the LMC. If (m - M)0 = 18.6, this is no longer possible. Given the differences between the ages derived using overshoot and classical models, the age distribution we derive for LMC field stars older than about 1 x 10(9) yr is similar to that found by earlier studies using deep photographic observations of other fields throughout the LMC, and with the observed age distribution of intermediate-age and old LMC star clusters. This suggests that the star formation rate in the LMC was globally quite low during at least the first half of its lifetime, and that a major event triggered a substantial and relatively sudden increase in the star formation rate throughout the entire LMC which persisted for several 10(9) yr and even up to the present epoch in some parts of that galaxy
Fábulas en dialecto vizcaíno
No full textFábulas en euskera vizcaíno obtenidas de un manuscrito de la Biblioteca Nacional de París por R. M. de Azkue atribuidas a Juan Mateo de Zavala. Son 35 fábulas en totalFables in Bizkaian Basque obtained from a manuscript from the National Library of Paris by R. M. de Azkue and attributed to Juan Mateo de Zavala. There are 35 fables in al
[Memo from M. F. Hass, Lieutenant Colonel, Civil Affairs Division regarding the proposed Japanese evacuation operation in San Mateo County, California]
No full textA proposal sent to all civilian agencies in the Wartime Civil Control Administration on the evacuation all persons of Japanese ancestry in San Mateo County, California. The proposal lists the times, dates, destinations, and procedures for the evacuation.The War Relocation Authority (WRA), together with the Wartime Civil Control Administration (WCCA), the Civil Affairs Division (CAD) and the Office of the Commanding General (OFG) of the Western Defense Command (WDC) operated together to segregate and house some 110,000 men women and children from 1942 to 1945. The collection contains documents and photographs relating to the establishment and administrative workings of the (WDC), the (WRA) and the (WCCA) for the year 1942
CAJA 55 - LEGAJO IV - SIGNATURA 6
No full textMateo Valdemoros de despide de la Sociedad por haber cesado en su cargo de Jefe Político al decretar el Rey la extinción de dicho cargo. Se acompaña copia de este decreto.Valdemoros, M. (1814). Mateo Valdemoros de despide de la Sociedad por haber cesado en su cargo de Jefe Político al decretar el Rey la extinción de dicho cargo. Se acompaña copia de este decreto. Real Sociedad Económica de Amigos del País de Valencia. https://riunet.upv.es/handle/10251/20024Importación Masiv
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
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