Search results for "NADs"

showing 5 items of 35 documents

Data from: Testis asymmetry in birds: the influences of sexual and natural selection

2014

Gonad size and shape asymmetries are particularly common in birds. Although some obvious size and shape differences between the left and right testes in birds were first documented more than a century ago, little is known about what influences the variation across species in either the degree or the direction of these asymmetries. Here we show that a left bias in size is the most likely ancestral state in most orders and families, and that there is a weak but significant negative relation between the degree of size and shape asymmetries. In extant species, testis size and shape symmetries increase with the degree of sperm competition (relative testes mass), but those relations are significa…

medicine and health caretestesMedicinegonadsLife sciencessymmetry
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Ferdinanda Erdmaņa Štolla sēņu mulāža

2020

Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekcijās glabājas unikāls eksponāts – sēņu mulāža, kas piederējusi Baltijas dabaspētniekam F. E. Štollam (1874 – 1966) un tikusi izmantota izglītības procesā. Iespējams, ka tā ir vienīgā Latvijā saglabājusies vēsturiskā sēņu mulāža.

mulāžaAmanitamycologymikoloģijaFerdinads Erdmanis ŠtollsPilzkunde:HUMANITIES and RELIGION::History and philosophy subjects::History subjects::History of science [Research Subject Categories]Ferdinand Erdman Stoll
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Ferdinanda Erdmaņa Štolla kāpu tintenes akvareļi

2020

1925. gada jūnijā Baltijas dabaspētnieks Ferdinads Erdmanis Štolls (1874 – 1966) Garciema smilšu kāpās atklāja jaunu sēņu sugu, kam tika dots nosaukums Coprinus dunarum F. E. Stoll, latviski – kāpu tintene. Zinātnieks sēnes fiksēja un detalizēti aprakstīja. Atraduma fotouzņēmumi un akvareļi ir iekļauti viņa vairāk kā 1000 vienību lielajā F. E. Štolla sēņu attēlu kolekcijā, kuru pamatā veido F. E. Štolla zīmētie akvareļi, kas glabājas Latvijas Universitātes muzeja Botānikas un mikoloģijas kolekcijās.

mycologyFerdinads Erdmanis Štollsmikoloģija:HUMANITIES and RELIGION::History and philosophy subjects::History subjects::History of science [Research Subject Categories]GarciemsFerdinand Erdman Stollkāpu tinteneLangezeemCoprinus dunarum
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Fatty acid composition as biomarkers of freshwater microalgae: analysis of 37 strains of microalgae in 22 genera and in seven classes

2013

The fatty acid (FA) composition of algae is an important determinant of their food quality for consumers, and FAs can also be used as biomarkers for biochemical and energetic pathways in food webs. FA analyses of 7 freshwater algal classes and 37 strains showed clear similarity within classes and strong differences amongst classes. Class was a dominant factor (66.4%) explaining variation in FA signatures of microalgae. The 7 algal classes comprised 4 separate groups according to their FA profiles: (1) Chlorophyceae and Trebouxiophyceae, (2) Bacillariophyceae, (3) Cryptophyceae, Chrysophyceae, and Raphidophyceae, and (4) Euglenophyceae. Each group had a characteristic FA composition, althoug…

ravinnonlaatuChlorophyceaeomega-3 rasvahapotAquatic SciencelipiditZooplanktonAlgaeviherlevätBotanyOmega-3 fatty acidspiilevätLacustrine food webjärviravintoketjuEcology Evolution Behavior and Systematicsnielulevätchemistry.chemical_classificationbiologyTrebouxiophyceaeta1182Fatty acidbiology.organism_classificationFood webchemistryDocosahexaenoic acidCryptomonadsta1181Green algaeDiet quality
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Reklamsvenska och dess särdrag i den nutida tidningssvenskan

2002

tyylireklamerstilstilanalysmarknadskommunikationtextanalysreklamsvenskatekstianalyysimarkkinointiviestintämainokset
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