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Start Over Coverage 6-10

2. Laboratoř optických mikromanipulačních technik - nové výzkumné směry

Creator:
Zemánek, Pavel, Jonáš, Alexandr, Ježek, Jan, Jákl, Petr, Šerý, Mojmír, Čižmár, Tomáš, Karásek, Vítězslav, Šiler, Martin, Brzobohatý, Oto, and Trojek, Jan
Format:
bez média and svazek
Type:
model:article and TEXT
Language:
Czech
Description:
The paper presents brief overview of the history and modern trends of optical micromanipulations techniques and their applications in the group of Optical micromanipulation techniques at the Institute of Scientific Instruments of the ASCR, v.v.i. The presented results deal especially with integration of optical micromanipulations and microanalytical systems ''lab-on-a-chip'' (delivery and separation of microobjects and nanoobjects suspended in the fluid, usage of photopolymerization to manufacture some parts of the above mentioned systems, combination of optical manipulations with optical spectroscopy) and with the study of interaction between light and mass demonstrated by the phenomenon of optical binding of objects. and Článek podává stručný přehled historie a aktuálních trendů v oblasti využití optických mikromanipulačních technik a prezentuje nejnovější výsledky, kterých v této oblasti dosáhla skupina Optických mikromanipulačních technik Ústavu přístrojové techniky AV ČR, v.v.i. Tyto výsledky se týkají zejména integrace optických mikromanipulací do mikroanalytických systémů typu ''lab-on-a-chip'' (doprava a separace mikro- a nanočástic suspendovaných v kapalině, příprava komponent výše zmíněných systémů pomocí fotopolymerace, kombinace optických mikromanipulací s optickou spektroskopií) a studia interakce mezi světlem a hmotou manifestované prostřednictvím fenoménu optického vázání objektů.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Preference of female rats for the odours of non-parasitised males: the smell of good genes?

Creator:
Willis, Charlene and Poulin, Robert
Format:
print
Type:
model:internalpart and TEXT
Subject:
Hymenolepis diminuta, mate choice, urine, testosterone, and Y-maze
Language:
English
Description:
Many animals obtain reliable information about potential mates, including whether they are parasitised or not, mostly from olfactory cues in urine. Previous experiments with rodents have shown that females can detect parasites in males that arc potentially transmissible during copulation, so that females can directly avoid infection by discriminating against parasitised males. Here, using choice tests, we examine whether female rats can distinguish males infected with the tapeworm Hymenolepis diminuta Rudolphi, 1819, a parasite with a complex life cycle and thus not directly transmissible among rats. Female rats tended to spend more time investigating the urine of non-parasitised males than that of parasitised males. The magnitude of the parasite burden in the infected males had no effect on the females' preference for the non-parasitised males. We also found that parasitised males had lower testosterone levels in their blood than non-parasitised males, fliese results suggest that females use cues in male urine reflecting cither the presence of the parasite and/or lower testosterone levels to avoid parasitised males and possibly secure resistance genes for their offspring.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Rozporuplné diskursy otcovství

Creator:
Dudová, Radka
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
fatherhood, discourse, and power
Language:
Czech
Description:
Fatherhood has experienced many transformations in the past years, as well as the institution of family and relationships between partners, parents and children. The social science discourse reflects those changes, but quite often through a prism of values and ideologies, and only rarely is gender neutral. This article presents today's discourses of fatherhood, their paradoxes and one way streets in which they sometimes end. Fathers today and especially those living in some of the ''new'' family arrangement (divorced fathers, step fathers, lone fathers...) find themselves in a situation where no clear cultural models or scenarios of behaviour exist. Public and scientific discourses of fatherhood are divided between the image of a ''new'' involved father on one side and of the ''feckless'' father on the other. Both images are often used and misused to political purposes, but don't really reflect the reality of contemporary fatherhood.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public