Results 111 to 120 of about 3,231 (246)

The International Association for Danube Research (IAD)—portrait of a transboundary scientific NGO [PDF]

open access: yes, 2018
Introduction: The International Association for Danube Research (IAD), a legal association (Verein) according to Austrian law, presently consists of 13 member countries and 12 expert groups covering all water-relevant scientific disciplines. IAD, founded
Bloesch, Jürg
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The effect of dietary dextrin levels on growth performance, body composition and hepatosomatic index in juvenile Siberian sturgeon, Acipenser baerii [PDF]

open access: yes, 2016
The present study was carried out to determine the ability of Acipenser baerii in utilizing carbohydrate (dextrin) as a non protein energy source substituted with animal oil. A total of 65 juveniles A.
Akrami, R.   +2 more
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Digestive system anatomy of the Acipenser persicus: New features [PDF]

open access: yes, 2013
Sturgeon is one of the most important species of the Caspian Sea aquatics. Unfortunately, this species faces the threat of extinction today. This makes specific studies on any type of sturgeons more important than before.
Akhtarzade, M.   +4 more
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Zipf's Law and Avoidance of Excessive Synonymy

open access: yes, 2007
Zipf's law states that if words of language are ranked in the order of decreasing frequency in texts, the frequency of a word is inversely proportional to its rank.
Akmajian   +31 more
core   +1 more source

To the structure of the spinal cord in sterlets

open access: yesNeurology Bulletin, 2020
In this session, we will allow ourselves to report the observations made in the laboratory and the highly respected teacher, prof. N.A.Mislavsky, on the structure of the spinal cord in sterlets.Our communication will be reduced, mainly, to the description of: 1) neuroglia cells, 2) ependyma cells and 3) nerve cells with the help of the substance.
openaire   +2 more sources

The use of biofilters with different types of fillers in recirculation aquatic system (RAS)

open access: yesFisheries & Aquatic Life
The aim of this study was to evaluate the effectiveness of using highly porous materials as fillers for biofilters in RAS, such as those with a much higher specific surface area than classical polymer floating bioload, and to determine the optimal ...
Sharylo Dmytro   +3 more
doaj   +1 more source

Caractéristique lexicale de l'élément slave dans le vocabulaire roumain (confrontation historique aux sédiments lexicaux turcs et grecs) [PDF]

open access: yes, 2004
En dépit d'un fort superstrat latin et par conséquent d'une forte présence du lexique latin dans le roumain, à peu près 32 % des mots désignant la faune du Delta roumain du Danube sont d'origine slave ce qui est plus que le pourcentage généralement ...
Kopecký, Peter
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Requirements for representative sampling for fluvial fish assemblages – literary review [PDF]

open access: yes, 2012
Fish are good indicators of long-term changes of fluvial ecosystems therefore, assessment of fish assemblages is frequently used in evaluation of the ecological status of surface waters, especially since the implementation of the EU Water Framework ...
Guti, G., Potyó, I.
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