National Repository of Grey Literature 27 records found  beginprevious18 - 27  jump to record: Search took 0.04 seconds. 
Výhody studia fosílií v jantaru pomocí ionizačního detektoru v EREM
Neděla, Vilém ; Weyda, František
We have studied the morphology and ultra structure of fossils (mostly insects and various other arthropods, plants) from Baltic amber. The amber has been divided by cleaned razor blades to obtain several pieces with opened bodies of fossils and observed by ionisation detector of VP SEM AQUASEM II.
Infrared digital photography in biology
Weyda, František
Infrared digital photography has new possibilities especially with use of recent digital cameras. Their chip has higher sensitivity to near infrared light (N-IR). Due to this fact digital cameras are more universal than classical camera. Powerful electronics also helps. Digital photography in visible light as well as in UV and N-IR light are more and more applied in biological laboratory or in outdoor investigation.
Sterilizační účinek oostatického pentapeptidu na reprodukci Pyrrhocoris apterus
Němec, Václav ; Tykva, Richard ; Hlaváček, Jan ; Holík, Josef
The effect of an oostatic pentapeptide, H-Tyr-Asp-Pro-Ala-Pro-OH, on reproduction of the bug Pyrrhocoris apterus was studied. The peptide decreased the number of laid eggs in the first ovarian cycle.
Distribuce a degradace oostatických peptidů v masařce Neobellieria bullata
Hlaváček, Jan ; Bennettová, Blanka ; Slaninová, Jiřina ; Černý, B. ; Vlasáková, Věra ; Holík, Josef ; Ježek, Rudolf ; Tykva, Richard
Distribution and degradation of oostatic peptides in the selected organs of flesh fly Neobellieria bullata was investigated using tritium labeled molecules. The degradation of peptides proceeded fast at both the amino and carboxy termini and resulted in formation of transient tetra and tripeptide sequences.
Digitální zobrazování klíněnky jírovcové, Cameraria ohridella (Lepidoptera, Gracillariidae)
Weyda, František
Paper concerns documentation of Horse Chestnut Leafminer in leaves by modern digital tools. They are: digital cameras like model Sony DSC-F828 in the near-infrared (700-880 nm) including video mode (VGA, 30 fps), digital camera inside mobil phone Sony Eriscon K750i, flatbed scanners and recent digital camcorders. Some methods of image processing were applied to digital images.
Vliv hálčivce kmínového, Aceria carvi Nal. (Acari: Eriophydae) na produkci semen kmínu kořenného
Zemek, Rostislav ; Kameníková, L. ; Zemková-Rovenská, G.
The aim of this work was to assess yield reduction of biennial caraway due to its infestation by Aceria carvi mite. The results revealed that plants showing symptomps of infestation produced significantly less seeds (2.11 g per plant) compared to healthy plants (5.18 g per plant).
Disperzní chování hálčivce kmínového (Aceria carvi Nal.)
Reindl, František ; Zemek, Rostislav ; Samek, T.
The aim of our work was to study dispersal of Aceria carvi from infested caraway fields. The obtained results confirmed anemochory and revealed that number of migrating mites increases with ripping of caraway.
Meření lokomoční aktivity u členovců pomocí analýzy obrazu v reálném čase
Zemek, Rostislav
Measuring locomotor activity in microarthropods by means of a real-time image analysis system.
High Performance Separation of Amino Acids and Related Compounds
Šimek, Petr ; Hušek, Petr
Latest achievements in high performance separations of amino acids and related compounds are critically reviewed and evaluated. Despite continuous innovations in separation techniques sample preparation still remains a critical step of amino acid analysis.
Insect biodiversity on the late domestic refuse dump with special reference to the medically important species and their bioindicator value
Olejníček, Jiří ; Gelbič, Ivan
Study of insects on the late refuse dump show, that in flora is many protectionist and medical important species. Territory sanitation changed biodiversity and shows, that still is not thanks of possibility of plants in harmfull substances collecting.

National Repository of Grey Literature : 27 records found   beginprevious18 - 27  jump to record:
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