ARTICLES

Filter  
Active filters 0
Remove
  

Refine your searches by:

Collections
Religion
Literature
Education
Languages
Social Sciences
Technology
Architecture and Urbanism
Research
Biology
History
all records (74)

Languages
English
Portuguese
Spanish
German
French
Finnish

Countries
South Africa
Brazil
Indonesia
USA
Spain
Netherlands
Colombia
Argentina
Vietnam
Canada
all records (75)

Years
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
all records (24)

Filter  
 
52.532  Articles
1 of 5.254 pages  |  10  records  |  more records»
Turtle origins remains a debated topic in evolutionary biology. Molecular data uniformly supports a turtle-archosaur clade; morphological data has supported multiple hypotheses including a turtle-lepidosaur clade, turtles as the sister to a archosaur-lepi... see more

Mosasaurs are a group of extinct large-bodied obligatory aquatic reptiles known from Late Cretaceous marine localities around the world, including the inland sea of North America. The behavior of these well-known reptiles has been discussed and suggest th... see more

PROSPECTS OF SURFACTANTS OF MICROBIAL ORIGIN IN THE MEDICINAL AND COSMETIC PRODUCTSI. R. Pelekh1, S. B. Bilous1, R. I. Vildanova2, O. M. Shulha21Danylo Halytskyi Lviv National Medical University2Department of Physical Chemistry of Fossil Fuels InPOCC, NAS... see more

PROSPECTS OF SURFACTANTS OF MICROBIAL ORIGIN IN THE MEDICINAL AND COSMETIC PRODUCTSI. R. Pelekh1, S. B. Bilous1, R. I. Vildanova2, O. M. Shulha21Danylo Halytskyi Lviv National Medical University2Department of Physical Chemistry of Fossil Fuels InPOCC, NAS... see more

The synthesis of 6-nitro veratryl alcohol and 6-nitro veratraldoxim from vanilin which was required as intermediates for the preparation of C-9154 antibiotic derivatives was carried out. C-9154 antibiotic is a sufficiently potent antibiotic, but so far th... see more

The nucleophilic substitution reaction to quaternary Mannich base from vanillin has been investigated. Mannich reaction to vanillin was carried out by refluxing mixture of vanillin, formaldehyde and dimethyl amine. Quaternary ammonium halide salt was obta... see more

In hierdie artikel word besin oor die vraag of RGO inderdaad in die onderrig van Grieks moontlik is en word aangedui hoe bekende RGO-tegnieke soos die opbou van databanke en itemgenerering werkbaar gemaak kan word in die rekenarisering van die ondem'g va... see more

W artykule zostala przedstawiona biografia Charlesa Vane’a, angielskiego pirata zyjacego na przelomie XVII i XVIII w. Opisano m.in. jego barwne przygody na niespokojnych karaibskich wodach. Dla lepszego zrozumienia czasów i realiów, w jakich zyl wspomnian... see more

In hierdie artikel word besin oor die vraag of RGO inderdaad in die onderrig van Grieks moontlik is en word aangedui hoe bekende RGO-tegnieke soos die opbou van databanke en itemgenerering werkbaar gemaak kan word in die rekenarisering van die ondem'g va... see more

1 of 5.254 pages  |  10  records  |  more records»