Příspěvek se snaží ukázat, jaký dopad mělo poznávání přírody Nového světa na utváření specifických podob raně novověké vědecké kooperace a vědy obecně. Záměrem textu je prezentovat originální metody (expedice, dotazníky) a formy vědění (historiae naturalis, botanické katalogy), které v souvislosti s kooperativním poznáváním Nového světa především ve Španělsku vznikaly a jež v soudobé Evropě neměly obdobu. Studie tak chce poukázat na význam, který mělo poznávání Nového světa Španěly v procesu tzv. vědecké revoluce, resp. proměny vědecké praxe i teoretických epistemologických schémat., This article attempts to show which effect and consequences the exploring of the New World nature on the formation of specific forms of early modern scientific cooperation and science in general had. The aim of the text is to present original methods (scientific expedition, questionnaires) and forms of knowledge (Historiae naturalis, botanical catalogs), which in the context of cooperative discovering the New World originated particularly in Spain and which were unprecedented in Contemporary Europe. Thus the study wants to point out the role of exploring of the New World by Spaniards in the process of so-called scientific revolution, respectively the changes in scientific practice and theoretical epistemological schemes., and Jana Černá.
This experiment tested the effects of an intracerebroventricular injection of prostaglandin E1 on the sympathetic activation and the thermogenic changes in rats with ibotenate lesions of the ventromedial hypothalamus. Under pentobarbital anesthesia, twelve Sprague-Dawley male rats were lesioned bilaterally in the ventromedial hypothalamus with an injection of ibotenic acid (30 nmol into each side). Sham lesions were carried out in other twelve control rats. After 48 h, all animals were anesthetized with ethyl-urethane. The firing rate of the sympathetic nerves innervating the interscapular brown adipose tissue and the colonic and interscapular brown adipose tissue temperatures were monitored before and after an intracerebroventricular injection of prostaglandin E1 (500 ng) or saline. Prostaglandin E1 induced an increase in the firing rate of sympathetic nerves and the colonic and interscapular brown adipose tissue temperatures. These effects were reduced by the ventromedial hypothalamic lesion. Since ibotenic acid destroys cell bodies, the findings indicate that neurons of the ventromedial hypothalamus play a considerable role in the control of sympathetic activation and the thermogenic changes during prostaglandin E1 hyperthermia., M. Monda, A. Sullo, V. De Luca, A. Viggiano., and Obsahuje bibliografii
The tenth in a series of successful workshops dedicated to high energy astrophysics and supporting ground-based experiments (e.g., robotic telescopes) was held in Karlovy Vary on April 22-25. Originally, the IBWS (INTEGRAL/BART) workshops focused on the work of the High Energy Astrophysics Group at the Astronomical Institute of the ASCR and relevant international collaborators from the field, with extensive student participation. The workshops now promote regional collaboration in high-energy astrophysics emphasizing interface between satellite projects and ground-based experiments (also in robotic telescopes). and Martin Blažek.
Je tomu již 12 let, co se ze skromného setkání studentů z Astronomického ústavu AV ČR v Ondřejově stala tradiční konference s mezinárodní účastí. INTEGRAL & BART Workshop (IBWS 2015) se zpočátku jako hlavním tématem zabýval pozorováním gamma záblesků vesmírnou družicí Evropské kosmické agentury INTEGRAL, jejichž optické protějšky se snažil na Zemi detekovat robotický dalekohled BART. Zaměření se v astronomii ukázalo jako aktuální, a tak letos v Karlových Varech prezentovalo své příspěvky na 40 inženýrů, vědců a studentů z České republiky, Německa, Itálie, Maďarska a Španělska. and Martin Blažek.
Theronts of the ciliate Ichthyophthirius multifiliis (Fouquet) with up to 4 micronuclei were recorded in populations from two different parasite isolates, maintained as primary infections in juvenile carp through 2 and 10 cycles, respectively. The largest number of multimicronucleate forms occurred within the older isolate (10 cycles) following cyst incubation at 20"C. Tro-phonts were induced to emerge from the host epidermis following incubation of the fish in Eagles MEM for 10-15 min at 20"C. This provided for the first time a technique to recover trophonts in all stages of development; observations were made on the transition from theront to trophont, with respect to nuclear events, the organelle of Lieberklihn, and phagocytosis of host cells. On re-exposure of carp already carrying a two-day primary infection, recently entered trophonts were found in various stages of fusion with established parasites. Results are discussed with respect to conjugation, anisogamy and senescence.