Francesc Payarols, traductor

Francesc Payarols i Casas (Girona, 23-9-1896), primer fill d'una família obrera install·lada a Barcelona el 1909, va estudiar Magisteri i va exercir de comptable mentre aprenia alemany, anglès i rus pel seu compte. Per mediació de Marcel·lí Antich, Joan Puig i Ferrater li va oferir traduir del rus al català per Editorial Proa. El 1935, amb Antich i un tercer soci va crear l'efímera Editorial Atena; després va traduir al castellà per Editorial Apolo, també de poca durada; finalment va iniciar una llarga col·laboració amb Editorial Labor. El 1940 va anar com a professor d'alemany a l'institut de la Seu d'Urgell, encetant així trenta anys de dedicació a l'ensenyament molt marcats per l'època. Jubilat als setanta anys, va traslladar- se a Barcelona, on viu actualment.Francesc Payarols i Casas (Girona, 23-9-1896), el dest son of a working class family living in Barcelona since 1909, attended teacher-training school and worked as a bookkeeper while learning German, English and Russian on his own account. Thanks to his acquaintance with Marcel·lí Antich, Joan Puig i Ferrater offered him translations from Russian into Catalan for Editorial Proa. Together with Antich and another partner, he set up the short-lived Editorial Atena in 1935. subsequently, he translated into Spanish for Editorial Apolo; then began a legthy collaboration with Editorial Labor. In 1940 he entered the grammar school in la Seu d'Urgell as a teacher of German and experienced a teaching period lasting Chirly years which was strongly marked by historical circumstances. On retiring at seventy, he settled in Barcelona, where he still lives today

TMC-1C: an accreting starless core

We have mapped the starless core TMC-1C in a variety of molecular lines with the IRAM 30m telescope. High density tracers show clear signs of self-absorption and sub-sonic infall asymmetries are present in N2H+ (1-0) and DCO+ (2-1) lines. The inward velocity profile in N2H+ (1-0) is extended over a region of about 7,000 AU in radius around the dust continuum peak, which is the most extended ``infalling'' region observed in a starless core with this tracer. The kinetic temperature (~12 K) measured from C17O and C18O suggests that their emission comes from a shell outside the colder interior traced by the mm continuum dust. The C18O (2-1) excitation temperature drops from 12 K to ~10 K away from the center. This is consistent with a volume density drop of the gas traced by the C18O lines, from ~4x10^4 cm^-3 towards the dust peak to ~6x10^3 cm^-3 at a projected distance from the dust peak of 80" (or 11,000 AU). The column density implied by the gas and dust show similar N2H+ and CO depletion factors (f_D < 6). This can be explained with a simple scenario in which: (i) the TMC-1C core is embedded in a relatively dense environment (H2 ~10^4 cm^-3), where CO is mostly in the gas phase and the N2H+ abundance had time to reach equilibrium values; (ii) the surrounding material (rich in CO and N2H+) is accreting onto the dense core nucleus; (iii) TMC-1C is older than 3x10^5 yr, to account for the observed abundance of N2H+ across the core (~10^-10 w.r.t. H2); and (iv) the core nucleus is either much younger (~10^4 yr) or ``undepleted'' material from the surrounding envelope has fallen towards it in the past 10,000 yr.Comment: 29 pages, including 5 tables and 15 figure

Simulação do impacto das atividades florestais na fragilidade potencial em plantios de pinus.

Este trabalho, realizado em uma área com povoamento de Pinus taeda, teve por objetivo simular e mapear a influência do valor de impacto das atividades florestais na fragilidade potencial. Variáveis do solo, de declividade do terreno, valor de impacto e de cobertura vegetal foram utilizadas para gerar os mapas. Os resultados expressos pelo modelo adotado mostraram que as áreas mais frágeis apresentam em sua maioria declividades superiores a 75 % e textura que variam de arenosa a média, e as áreas menos frágeis apresentam predominantemente relevo plano (até 3 %) e textura argilosa. Quando simulado o impacto das atividades florestais sobre esse ambiente, verificou-se que na maior parte da área (78 %) todas as atividades florestais podem ser realizadas sem influência na degradação do meio ambiente e para algumas áreas (11 %) o ambiente foi considerado menos frágil, em razão da presença de cobertura vegetal