Since the beginning of the 19th century, the comparative and ontogenetic branches of developmental physiology were cultivated in our country. Evidence was given that development of the gastrointestinal tract in tadpoles is dependent on the quality of proteins in their food. A complete metamorphosis of Amblystoma mexicanum, was entirely accomplished by feeding with powderized thyroid gland. The definition and chronological delimitation of both the suckling and weaning period in experimental animals opened the investigation of the effect of disturbance of the natural environment caused by premature weaning on the ensuing development of an individual. A new term was coined "late effects of early adaptations". Analysis was provided by impressive research of the development of energetic metabolism and development of gastrointestinal tract functions, water and electrolyte exchange and endocrine functions including the role of the pineal gland in control of circadian rhythms (12 references).
Trafficking of the rhoptry chimeric protein RhopH2-GFP, which contains RhopH2 signal peptide plus the downstream five amino acids, was dissected by treating parasites with Brefeldin A at three different time points. Twenty eight hrs-stage trophozoites accumulated the chimera within the parasite endoplasmic reticulum. In 32 hrs-stage schizonts, the chimera was distributed in the parasite cytoplasm but not in the parasitophorous vacuole. In 36 hrs stage-schizonts, the chimera was detected in the individual parasitophorous vacuoles of the developing merozoites and, in contrary to non-treated parasites, no immature rhoptry vesicles could be detected in the cytoplasm of immature merozoites. These data show that this chimera is trafficked to the rhoptries via Brefeldin A-sensitive pathway indicating that this trafficking is similar to that of the endogenous rhoptry proteins, and that the five amino acids downstream of the signal peptide cleavage site may contain the sorting signal required for rhoptry targeting.
Sparse-elm grassland is the remarkable landscape of Hunshandak Sandland in Inner Mongolia Autonomic Region of China. Maximum quantum efficiency (Fv/Fm) of 99 native plant species (85 grasses, 11 shrubs, and 3 trees) of different plant functional Types (PFTs) distributed in fixed sand dune, lowland, and wetland was investigated. Deep-rooted plant species (tree, shrub, and perennial grass) had higher Fv/Fm values than the shallow-rooted species (annual grasses), suggesting that soil drought is the major environmental stress. Annual C4 grasses had higher Fv/Fm values than annual C3 or CAM ones, indicating that C4 photosynthesis is more ecologically adaptive than CAM and C3 grasses. According to the habitats with annual C3 grass distribution, Fv/Fm values were in the order of fixed dune>lowland>wetland, suggesting that salt and pH value may enhance irradiance or heat stress for those distributed in pickled and watery habitats. Based on such characteristics, Ulmus pumila, Salix gordejevii, Caragana microphylla, Agriophyllum pungens, and Agropyron cristatum are recommended as ideal species for ecological restoration in degraded sand-land ecosystems. and Yong-Geng Li ... [et al.].
Stanislav of Znojmo (died 1414), a professor of the Prague Theological Faculty, first a teacher and friend to Jan Hus, but then his decided opponent, wrote a comprehensive treatise, probably around 1403, entitled De vero et falso. The subject of my article is an analysis of the content of this work. In it, Stanislav deals with the question of the truth of a proposition and the problem of its truth-maker. The question of the truth-maker falls into the area of metaphysics, and so the author speaks of metaphysical truth. In so far as metaphysical truth is concerned, Stanislav of Znojmo defends a decidedly realist standpoint, judging that categorematic expressions are not alone in having real counterparts in the world, but syncategorematic expressions (for example, statement conjunctions, words expressing negations and so on) also have such counterparts. Stanislav’s treatise, in its overall orientation, belongs to propositionalism, a trend in logical thought widespread at the end of the Middle Ages. Although the author of the treatise De vero et falso does not cite contemporary authors, he shows a knowledge of some exponents of propositional logic (namely Gregory of Rimini, for example). His main inspiration, however, is undoubtedly the work of John Wyclif.
V diskusním příspěvku polemizujeme s nově navrženou chronologií kultury s nálevkovitými poháry na základě modelace radiokarbonových dat z především pohřebních lokalit, kterou představili M. Šmíd et al. (2021). V kritice se zabýváme jednak teoretickým přístupem ke studiu pravěkých společností, způsobem výběru radiokarbonových dat, metodou modelace radiokarbonových dat a absencí diskuse v situaci, která ji snadno umožňuje. Na závěr představujeme vlastní pojetí chronologie keramických skupin spojených s nálevkovitými poháry, ve kterém definujeme dva chronologické stupně – baalberský a bolerázský, zatímco „předbaalberský“ stupeň má více společenský než chronologický rozměr. and The article offers a discussion of the new Funnel Beaker chronology proposed by M. Šmíd et al. (2021) based on the modelling of radiocarbon dates coming mainly from burial sites. The review deals with both the theoretical approach to the study of prehistoric societies, the method of selecting radiocarbon data, the method of modelling radiocarbon data and the absence of discussion in a situation that easily fosters it. The conclusion presents the actual concept of the chronology of pottery groups connected with the Funnel Beakers, with two chronological stages being defined – the Baalberge and Boleráz, whereas the ‘pre-Baalberge’ stage has more of a social than chronological dimension.
The specific feature of the tramping is the fact that, in špite of its 80-year-tradition and a reál mass character, it has always verged on becoming illegal. This is a consequence of the very substance of the activity - a free camping outdoors, outside the parcels or objects sanctioned for this purpose by competent statě authorities or private owners. The intensity of the restrictive measures of the administrativě machinery towards tramping is unsteady - sometimes the activity has been tolerated, sometimes sujfered in silence, but also occasionally or systematically persecuted. This occurred during all regimes - at the times of the first Czechoslovak Republic, during Nazi occupation, during the „ building of the socialism “ times, but also nowadays. The motives that drove the oppression of the tramp movement for part of the statě organs of course differed considerably. Between the wars the tramp movement has been restricted by the police, who applied especially the so called „ Kubát ’s law forbidding the camping and outdoor activities of the single youths of the opposite sex. During the occupation times the tramps háve been persecuted by the security organs of the protectorate police and by the German Gestapo, who suspected them of being involved in the resistance movement and helping the partyzans. In the socialist era the tramps had to liide from the foresters, police forces and their wardens stationed in the villages, who resented the existence of the relatively informal tramp movement outside the oficial structures, their free movement over the country as well as their traditional sympathies toward the heroes of the American West, showed by their clothing and other atributes. In the last tenyears, the tramps are being accused of breaking the nátuře protection laws and they are persecuted especially by the representatives of the State conservation department.
Tento článek definuje trans jako širokou paletu osobnostních (genderových) projevů, které stojí v kontrastu s tendencí společnosti přijímat (přejímat) hluboce zakořeněné představy o tom, co je "normální" a "přirozené", a tendencí chovat podezření vůči takovým projevům osobnosti, které se zdají být s těmito normami v rozporu - změna pohlaví se pak zdá být "nepřirozená". Tento článek si klade otázky ohledně vztahu (trans) genderu k demokratické představivosti společnosti. and This article defines the phenomenon of trans as an expression of the wide range of personal (gender) expressions and contrasts this idea with the tendency of societies to adopt deeply rooted ideas about what is "normal" and "natural", as well as the tendency to act with suspicion against such manifestations of personality that seem to be in conflict with these standards - sex change then appears to be "un-natural." This article raises questions about the relationship between (trans)gender and democratic imagination.