Search results for ":NATURAL SCIENCES"

showing 10 items of 1090 documents

Experimental investigations on the merogeneous somatic induction [Eksperimentāli pētījumi par merogeno somatisko indukciju]

1936

Teksts angļu valodā, kopsavilkums latviešu valodā.

Dzīvnieku anatomijaZoology experimentalDzīvnieku eksperimenti:NATURAL SCIENCES::Biology::Organism biology::Morphology [Research Subject Categories]Tauriņu anatomija un morfoloģijaDzīvnieku fizioloģijaZooloģija eksperimentālā
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Drift ice in Daugava (14.04.1905)

1905

K. R. Kupfera 1905. gada 14 aprīlī fotografētā ledus iešana Daugavā pie Doles salas ar autora aprakstu. K. R. Kupfer's photographed drift ice in Daugava near Dole Island on 14. April 1905, with an autor's description. K. R. Kupfer fotografierte am 14. April 1905 Eisgang in der Daugava bei Dole Island mit einer Beschreibung vom Autor.

DünaDaugavaDahlenholmEisgangDoles sala:NATURAL SCIENCES::Earth sciences [Research Subject Categories]ledus iešanadrift ice
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Ledus iešana Daugavā (aprīlis 1905)

1905

K. R. Kupfera 1905. gada aprīlī fotografētā ledus iešana Daugavā pie Doles salas ar autora aprakstu. K. R. Kupfer's photographed drift ice in Daugava near Dole Island on April 1905, with an autor's description. K. R. Kupfer fotografierte am April 1904 Eisgang in der Daugava bei Dole Island mit einer Beschreibung vom Autor.

DünaDaugavaDahlenholmEisgangDoles sala:NATURAL SCIENCES::Earth sciences [Research Subject Categories]ledus iešanadrift ice
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Ice rise in Daugava (14.04.1905)

1905

K. B. Dosa 1905. gada 14. aprīlī fotografētā ledus celšanās Daugavā pie Marjuškas (pie Doles salas) ar aprakstu. K. B. Dos's photographed ice rise in Daugava near marjuska (near Dole Island) on 14 April 1905, with a description. K. B. Doss fotografierte am 14. April 1905 Eisaufsteigung in der Daugava bei Marjuschka (bei Dole Island) mit einer Beschreibung.

DünaRigaDaugavaIce riseleduledus celšanāsMarjuschka:NATURAL SCIENCES::Earth sciences [Research Subject Categories]EIs aufsteigung
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Eisüberlastung in Daugava: Kegum, Rembat (13.04.1904.)

1904

K. R. Kupfera 1904. gada 13. aprīlī fotografētie ledus sastrēgumi Daugavā pie Rembates un Ķeguma ar autora aprakstu. K. R. Kupfer's photographed ice jams in Daugava near Rembat and Kegum on 13 April 1904, with a autor's description. K. R. Kupfer fotografierte am 13. April 1904 Eisstauungen in der Daugava bei Rembat und Kegum mit einer Beschreibungvom Autor.

DünaRingmundshofledus sastrēgumiDaugavaEisüberlastungice jamsKeggumĶegumsRembate:NATURAL SCIENCES::Earth sciences [Research Subject Categories]Eissatuungen
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Ledus sastrēgumi Daugavā: Doles sala (17.04. 1904.; Kupfer)

1904

K. R. Kupfera 1904. gada 17. aprīlī fotografētie ledus sastrēgumi Daugavā pie Doles salas ar autora aprakstu. K. R. Kupfer's photographed ice jams in Daugava near Dole Island on 17 April 1904, with an autor's description. K. R. Kupfer fotografierte am 17. April 1904 Eisstauungen in der Daugava bei Dole Island mit einer Beschreibungvom Autor.

Dünaledus sastrēgumiDaugavaDahlenholmEisüberlastungice jamsDoles sala:NATURAL SCIENCES::Earth sciences [Research Subject Categories]Eissatuungen
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Eisüberlastung in Daugava: Salaspils (11.,13.,17.04.1904.)

1904

K. R. Kupfera 1904. gada aprīlī fotografētie ledus sastrēgumi Daugavā pie Salaspils. K. R. Kupfer's photographed ice jams in Daugava near Salaspils on April 1904, with a autor's description. K. R. Kupfer fotografierte am April 1904 Eisstauungen in der Daugava bei Salaspils Island mit einer Beschreibung vom Autor.

Dünaledus sastrēgumiSalaspilsDaugavaKurtenhofEisüberlastungJungfrauhofJumpravmuiža:NATURAL SCIENCES::Earth sciences [Research Subject Categories]Eissatuungen
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Synthesis of porous indium phosphide with nickel oxide crystallites on the surface

2022

Y. Suchikova, S. Kovachov, I. Bohdanov, І. Bardus show their appreciation to the Ministry of Education and Science of Ukraine for its support, in particular: grant 0122U000129 “Search for Optimal Conditions for the Synthesis of Nanostructures on the Surface of Semiconductors A3B5, A2B6 and Silicon for Photonics and Solar Energy,” and grant 0121U109426 “Theoretical and Methodological Principles of Systemic Fundamentalization of Intended Specialist Training in the Field of Nanophase Materials Science for Productive Professional Activity”.

EDX spectrumcoating:NATURAL SCIENCES::Physics [Research Subject Categories]annealingelectrochemical etchingNickel oxalate
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Primary culture of avian embryonic heart forming region cells to study the regulation of vertebrate early heart morphogenesis by vitamin A

2014

Background: Important knowledge about the role of vitamin A in vertebrate heart development has been obtained using the vitamin A-deficient avian in ovo model which enables the in vivo examination of very early stages of vertebrate heart morphogenesis. These studies have revealed the critical role of the vitamin A-active form, retinoic acid (RA) in the regulation of several developmental genes, including the important growth regulatory factor, transforming growth factor-beta2 (TGFβ2), involved in early events of heart morphogenesis. However, this in ovo model is not readily available for elucidating details of molecular mechanisms determining RA activity, thus limiting further examination o…

Early cardiovascular developmentVascular Endothelial Growth Factor AHeart morphogenesisRetinoic acidMorphogenesisEnzyme-Linked Immunosorbent AssayTretinoinChick EmbryoBiologyAvian ProteinsTissue Culture Techniqueschemistry.chemical_compoundTransforming Growth Factor beta2Gene expressionin vitro cultureRetinoic acidMorphogenesisAnimalsVitamin ACells CulturedGeneticsHomeodomain ProteinsEmbryonic heartHeart developmentGATA4Reverse Transcriptase Polymerase Chain ReactionTGFβ2MyocardiumGene Expression Regulation DevelopmentalHeartVitaminsChicken heart forming region cellsFibronectinsGATA4 Transcription Factor:NATURAL SCIENCES::Biology [Research Subject Categories]chemistryVertebratesDevelopmental biologyChickensDevelopmental BiologyResearch ArticleTranscription FactorsBMC Developmental Biology
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Wasserstand und Eisbedeckung der Düna bei Riga

1887

Atsevišķs novilkums no: "Bericht über die Vorarbeiten für die systematische Entwässerung und Reinigung der Stadt Riga".

Eisbedeekung - DaugavaWasserstand - DaugavaMeteorologie - Lettland:NATURAL SCIENCES::Earth sciences::Atmosphere and hydrosphere sciences::Meteorology [Research Subject Categories]Klima - Riga (Lettland)Hidrauliskie mērījumi - DaugavaIce on rivers - DaugavaWater levels - DaugavaHydraulische Messungen - DaugavaMeteoroloģija - LatvijaKlimats - Rīga (Latvija)Ledus upēs - DaugavaŪdens līmeņi - DaugavaEisflüsse - Daugava
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