Population structure and genetic diversity of invasions are the result of evolutionary processes such as natural selection, drift and founding events. Some invasions are also molded by specific human activities such as selection for cultivars and intentional introduction of desired phenotypes, which can lead to low genetic diversity in the resulting invasion. We investigated the population stru...

This study examined the hypothesis that several days of exhaustive exercise would impair thermoregulatory effector responses to cold exposure, leading to an accentuated core temperature reduction compared with exposure of the same individual to cold in a rested condition. Thirteen men (10 experimental and 3 control) performed a cold-wet walk (CW) for up to 6 h (6 rest-work cycles, each 1 h in d...

Elemental mercury is a liquid toxic metal widely used in industry. Occupational exposure occurs mainly via inhalation. Previously, neuropsychological assessment detected deficits in former workers of a fluorescent lamp plant who had been exposed to elemental mercury vapor and were away from exposure for several years at the time of examination. Objectives The purpose of this work was to reexa...

LOUIS DULIEU, La medecine a Montpellier, Vol. 1, Le Moyen Age, Avignon, Les Presses Universelles, 1975, 8vo, pp. 386, illus., 150 F. For several years Dr. Dulieu of Montpellier has been publishing articles on the history of medicine there. He has now produced the first of three volumes on this theme; the second will deal with the Renaissance and the third with modem times. Probably the most imp...

Mexico shares with most other Latin American countries a nuptiality system that is characterized by the coexistence of marriage and cohabitation. This dual nuptiality model (Castro-Martín 2002 ), with origins in pre-hispanic times, has been present for centuries. Despite the fact that cohabitation survived in Mexico with different intensity between regions and among several indigenous populatio...

In the Middle Ages, most Western European countries looked for their roots in Trojan War. 12th century Geoffrey of Monmouth created a story which he made Brutus Troy founder state. For several centuries, became basis discussion between writers about beginnings The was also used by successive monarchs – war propaganda, to emphasize independence from Pope or try strengthen royal power. Although c...

Fibonacci numbers have engaged the attention of mathematicians for several centuries, and whilst many of their properties are easy to establish by very simple methods, there are several unsolved problems connected to them. In this paper we review the history of the conjecture that the only perfect powers in Fibonacci sequence are 1, 8, and 144. Afterwards we consider more stronger conjecture an...

persian manuscripts were produced during the second century until the forth one in iran. iranians had experiences about painting in pre-islamic era, so they played an important role in creating art works such as miniature, illuminated pages in islamic civilization after the emergence of islam. in the first centuries of emerging islam, beautiful transcription, ornamentation of quran were honors ...

Roots of Digital Techniques and Functions in Traditional Film Photography Photography is the result of combining several technical discoveries. Chinese philosopher Mo Di and Greek mathematicians Aristotle and Euclid described a pinhole camera in the 5th and 4th centuries BCE. From rudimentary forms like the pinhole camera and the camera obscura, Film and print photography has transformed with t...

Light and its properties intrigued mankind for centuries. This paper gives answers on several questions related to light and its propagation through space. Famous Michelson-Morley experiment analyzed from the new point of view. New interpretation of experimental data of that observation is proposed.