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Search Results: 1 - 10 of 579314 matches for " G.A. Chapela "
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On the centre of mass velocity in molecular dynamics simulations
G.A. Méndez-Maldonado,M. González-Melchor,J. Alejandre,G.A. Chapela
Revista mexicana de física , 2012,
Abstract: Realizamos simulaciones de dinámica molecular en fluidos a condiciones supercríticas para analizar el efecto que la velocidad del centro de masa (VCM) del sistema tiene sobre la temperatura y la estabilidad de fases. Escalamiento estándar de velocidades y cadenas de Nosé-Hoover son usados como métodos de termostato para realizar simulaciones en modelos de potencial de pozo cuadrado, Lennard-Jones y el modelo primitivo suave. Remover la VCM al inicio o durante la simulación no es requerido para que el termostato de cadenas de Nosé-Hoover mantenga la temperatura correcta del sistema, sin embargo es fundamental mantener nula la VCM cuando se usa el esquema tradicional de escalamiento de velocidades. Se muestra que si la VCM es removida sólo al inicio de la simulación las temperaturas interna y externa no son iguales para tiempos de simulación muy grandes y el sistema se solidifica. La temperatura y las propiedades físicas obtenidas usando el método de cadenas de Nosé-Hoover son iguales a aquellas obtenidas usando escalamiento de velocidades donde se remueve la VCM durante la simulación.
Evasion of immune responses by Trypanosoma cruzi, the etiological agent of Chagas disease
DosReis, G.A.;
Brazilian Journal of Medical and Biological Research , 2011, DOI: 10.1590/S0100-879X2011007500005
Abstract: infection with the protozoan parasite trypanosoma cruzi leads to chagas disease, which affects millions of people in latin america. infection with t. cruzi cannot be eliminated by the immune system. a better understanding of immune evasion mechanisms is required in order to develop more effective vaccines. during the acute phase, parasites replicate extensively and release immunomodulatory molecules that delay parasite-specific responses mediated by t cells. this immune evasion allows the parasite to spread in the host. in the chronic phase, parasite evasion relies on its replication strategy of hijacking the tgf-β signaling pathway involved in inflammation and tissue regeneration. in this article, the mechanisms of immune evasion described for t. cruzi are reviewed.
Feeding Responses in Snailets of African Giant Land Snails (Archachatina marginata) to Different Food Items in the Sub-Saharrah Tropical Region, Nigeria
G.A. Lameed
Journal of Animal and Veterinary Advances , 2012,
Abstract: The study of feeding responses of snailets of African giant snail (Archachatina marginata) fed with different food items: Ugwu leave (Talfairia sp.), Pawpaw fruit (Carica papaya), banana fruits (Musa sapientum) and three levels of compounded feed with crude protein: 16.25, 15.88, 15.60% was carried out in the University Mission Research (UMR) snailery unit. Six treatments (T1-T6) were established with fifty snailets each and fed with different food items under the same environmental condition. Observations were made on feed utilization (intake), growth rates and mortality rates that were recorded bi weekly, which covered a period of six months. Results showed that the snailets in all the treatments utilized the feed types significantly (p<0.05); while the feed intake with respect to growth pattern (weight gain) in treatments 1-6 had no significant difference (p>0.05). Snailets fed with compounded feed (T: 6) with mean intake and mean growth rates: 12.57 and 2.96 g, respectively had the best performance. Highest mortality rate (46%) was recorded in treatment 3 fed with banana and the least rate was generally obtained from compounded feed in treatment 4 with 16% mortality. It can be concluded that snailets in treatment 6 (compounded feed) with higher crude protein percentage (15.60%) had the highest total weight gain and mean total feed intake of 1480 and 12.57 g, respectively, when compared with other treatments.
External Pacemaker of Diagnose and Research, Experience in Military Hospital Center Mexico
Martinez G.A
Lecture Notes in Engineering and Computer Science , 2007,
Comparison of Nodal Distribution of Soybean Cultivars' Yield Components in Different Planting Dates
G.A. Ranjbar
Pakistan Journal of Biological Sciences , 2007,
Abstract: Aim of this study was to determine planting date effects on Nodal distribution of yield and its components in nine indeterminate soybean cultivars. To meet such a purpose, a split plot design based on a randomized complete block layout with six planting dates (24th April, 10th and 27th May, 10th and 26th June and 11th July) as main plots and nine cultivars (Williams, Clark 63, SRF 450, Steele, Hark, Corsoy, Blackhawk, Woodworth and Bonus) as sub plots have been used in five replications. The results have clarified that height, branch number, pod number, grain number and seed weight plays an important role on yield increasing. So that, medium maturity cultivars have producing maximum number of pods, grains and seed weight in their upper two third of canopy. Also, various cultivars have indicated different reactions for yield components, so that, Williams and Woodworth (medium maturity cultivars), Steele and Bonus (early maturity cultivars) have produced larger seeds in different planting dates. Generally, Woodworth, in comparison with the other cultivars, demonstrating superiorities in all the considered traits. Maximum amount of pod number, grain number and seed weight in early maturity cultivars was belong to 27th of May planting date, however, for Woodworth and Clark 63 (medium maturity) it was 24th of April and 27th of May, respectively. The highest 100 seed weight per node were produced at 26th of June and 27th of May planting dates by Woodworth and Corsoy, respectively. Differences between planting dates for 100 seed weight in Clark 63 and Bonus were not significant.
Problems and prospects of development of innovative labor potential in modern conditions
Minov G.A.
Sovremennaa Ekonomika : Problemy, Tendencii, Perspektivy , 2011,
Abstract: The paper presents an innovative feature of the labor potential in Russia, which are based on scientific and human resources. Stressed the importance of organizational conditions for the development of innovative employment potential, in particular, is considered as efficient organizational form as a research and educational center. The recommendations for the effective integration of foreign and domestic experience in training of innovative personnel.
Reasons of the heart. Recovering Christian pursuasion
G.A. Lotter
Koers : Bulletin for Christian Scholarship , 1997, DOI: 10.4102/koers.v62i1.560
Bibliography H.J. de Graaf
G.A. Nagelkerke
Bijdragen tot de Taal-, Land- en Volkenkunde , 1985,
Developing strategy of public-private partnership in Belarus innovative development
G.A. Yasheva
Marketing ì Mened?ment Innovacìj , 2012,
Abstract: The article considers theoretic-methodological basis of the public-private partnership in innovation sphere, including value of public-private partnership for economic development, the concept of public-private partnership in innovation sphere, its specific characteristics, motivation of participation in the partnership of public and private sectors. The main directions of public-private partnerships strategy in Belarus, as well as mechanisms of public-private partnership, including financial and organizational ones are developed in order to modernize the economy of Belarus and transfer to the innovation way of development.
Recent advances in M3 (mechanics on the material manifold)
Maugin G.A.
Theoretical and Applied Mechanics , 2002, DOI: 10.2298/tam0229221m
Abstract: After a brief critical review of the basic arguments involved in the various interpretations of the mechanics on the material manifold and a short remark on the relationship of that approach with the late R.Stojanovi 's works, some of the recent advances in that field of continuum physics are presented. These include direct consequences in the numerics of solid-mechanics problems, general applications to the theories of plasticity, growth and mixtures, and a nonstandard application to the progress of phase- transition fronts in solids. .
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