Search results for "Tris"

Expression of aquaporins early in human pregnancy

2011

Abstract Background Aquaporins (AQPs) constitute a family of channel proteins implicated in transmembrane water transport. Thirteen different AQPs (AQP0–12) have been described but their precise biologic function still remains unclear. AQPs 1, 3, 4, 8, and 9 expression has been described in human chorion, amnion and placenta; however, AQP4 is the only that has been identified in the first trimester of human pregnancy. Objective To assess multiplicity of AQPs expression from 10th to 14th week gestation. Population and methods Chorionic villi samples (CVS) collected in pregnant women for prenatal diagnosis were analysed by real time-PCR to assess cDNA expression of AQPs 1, 2, 3, 4, 5, 6, 7, 8…

Impact of chromosomal abnormalities on preimplantation embryo development.

2007

Objectives To evaluate the influence of numerical chromosomal abnormalities on preimplantation embryo development. Methods This study includes 6936 embryos from 1245 women undergoing preimplantation genetic diagnosis (PGD). Indications for aneuploidy screening were: recurrent miscarriages, implantation failure, severe male factor, advanced maternal age, and mixed causes. Embryo biopsy was performed on day 3, and embryos were co-cultured until day 5, when embryo transfer was performed. Results In the aneuploidy screening regimen, normal euploid embryos showed significantly higher blastocyst rates (68.2%) compared to chromosomally abnormal (42.8%, p < 0.0001) and mosaic (53.7%, p < 0.0001) em…

Afrocentrisma rašanās un attīstība ASV: amerikāņu autoru skatījumā

2015

Afrocentrisma aizsākumi ASV historiogrāfijā ir saistīti ar melnādaino sociāli politisko un ekonomisko situāciju Dienvidu štatos un cīņu par līdztiesību 20. gs. vidū, uzplaukstot melnādaino nacionālismam. Maģistra darbs Afrocentrisma rašanās un attīstība ASV: amerikāņu autoru skatījumā analizē ASV vēstures zinātnē radītos afrocentriskos pētījumus par afroamerikāņu vēstures sasniegumiem, afrikāņu kultūrām un pan-afrikānisma pārmantotajām idejām, un secina, ka afrocentrismam kā alternatīvam pasaules uzskatam, kultūras ideoloģijai un akadēmiskai disciplīnai ir bijusi ievērojama nozīme afroamerikāņu kopienas pašapziņas celšanā un valdošās eirocentriskās vēstures interpretācijas pārvērtēšanā, nov…

Data from: Effects of undergrowth removal and edge proximity on ground beetles and vascular plants in urban boreal forests

2019

Urban forests are regularly managed for human safety and aesthetic reasons, but they are crucial habitat for many species. Removals of undergrowth occur commonly in these forests, yet the ecological consequences of these operations are poorly understood. We sampled ground beetles (Coleoptera, Carabidae) and vascular plants along 20-m edge gradients in Finnish urban forests, in five stands treated 0.5−2.5 years earlier with undergrowth removal and in five untreated stands. We hypothesized that undergrowth removal and edge proximity would benefit opportunistic and open-habitat species, whereas shady-habitat species would be affected negatively. (1) Regarding carabids, diversity and evenness i…

Zvaigžņotā Debess: 2017, Pavasaris (235)

2017

Contents: “ZVAIGŽŅOTĀ DEBESS” FORTY YEARS AGO: E.Mūkins. Clouds of Venus: Structure and Composition (abridged) ; J.Miezis. 3rd All-union Young Astronomers Gathering (abridged) ; DEVELOPMENTS in SCIENCE: K.Schwartz. New Discoveries in the Milky Way ; DISCOVERIES: I.Eglītis. Small Planets Get Latvian Names ; I.Pundure. Earth-mass World Revealed around Proxima Centauri ; SPACE RESEARCH and EXPLORATION: J.Jaunbergs. Mysteries of Saturn’s Clouds ; A.Slavinskis. Contribution of Estonian Student Satellite Programme ESTCube to Largest Challenges for Humanity ; R.Misa. Impossible Engine that Is likely Possible ; I.Pundure. ESO VLT to Search for Planets in Alpha Centauri System ; EARTH and COSMOS: J.…

Data from: Moving in the Anthropocene: global reductions in terrestrial mammalian movements

2019

Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human footprint were on average one-half to one-third the extent of their movements in areas with a low human footprint. We attribute this reduction to behavioral changes of individual animals and to the exclusion of species with long-range movements from areas with higher human impact. Global loss of vagility alters a key ecological trait of animals that affects no…

1933. gada 25. novembra jaunie krāsneši ar t/l I šarž!, oldermani un ekonomu

1933

Fotogrāfijā oldermanis, filistrs Valdis Oga ar jaunajiem krāsnešiem, kuri uzņemti par pilntiesīgiem latviešu studentu korporācijas Latvia locekļiem, saņemot savas korporācijas krāsu regālijas (krāsu deķeli un krāsu lentes): t/l I šaržētais, tautietis Edgars Ķiploks (1. pēc kārtas, skatoties no kreisās puses); zelta zēns Edgars Jēkabsons (2. pēc kārtas, skatoties no kreisās puses); zelta zēns Eduards Tīlis (3. pēc kārtas, skatoties no kreisās puses); zelta zēns Voldemārs Cifersons (4. pēc kārtas, skatoties no kreisās puses); zelta zēns Nikolajs Miklašēvičs (5. pēc kārtas, skatoties no kreisās puses); t/l oldermanis, filistrs Valdis Oga (6. pēc kārtas, skatoties no kreisās puses); tautietis Ā…

THE DIASCIA FLOWER AND ITS BEE - AN OIL-BASED SYMBIOSIS IN SOUTHERN AFRICA

1984

As has been formerly shown, the double-spurred flowers of the South African genus Diascia (Scrophulariaceae) produce fatty oil as a primary attractant. Their oil-collecting pollinators have so far remained unknown. It is concluded from the morphology and from direct evidence of flower visitation that the recently established Melittid genus Rediviva represents the co-evolved pollinator group of these plants, at the same time demonstrating the presence of “manual” oil collectors in Southern Africa. The bees must introduce their especially equipped forelegs into the paired spurs of Diascia for harvesting the oil, thereby pollinating the flower. In the described case, a new species, Rediviva em…

Prof. J. Lautenbacha angļu literaturas vēsture XVI. gadsimtenī

1922

Between Life and Existence. Heidegger’s Aristotelianism and the Question of Animality

2021

This paper starts by investigating the Aristotelian roots of Heidegger’s stance toward animal life from 1924 lecture course “Basic concepts of Aristotelian philosophy” to 1929/30 lecture course “The fundamental concepts of Metaphysics”. In following Aristotle, Heidegger displays the ontological transition from life to existence as grounded to the peculiar linguistic ability of human beings. In doing that, both Heidegger and Aristotle seem to establish a connection between an existential faculty (logos) and the apparently dominant position occupied by our species. On the other side, though, to be endowed with logos means for human beings to be able to de-centre themselves in recognizing the …