http://hdl.handle.net/20.500.12323/5115 2026-04-15T13:53:08Z http://hdl.handle.net/20.500.12323/5123 Title: The Determination of the Optimum Parameters for the Formation of Silver Nanoparticles by Aspergillus Niger BDU-A4 Authors: Musayev, Eynulla Abstract: In this work, the formation of silver nanoparticles was investigated by Aspergillus niger BDU-A4 at different stages/phases/culture media: a) pH: 4.82,5.79,7.42,8.88, 9.86;b) indicators of temperature (20°C, 25°C, 30°C, 37°C və 45°C) and c) indicators of different concentration of the salt of AgNO3. As a result of UV-V, absorbance spectrum is defined as the optimal conditions for the formation of maximum amount of Ag nanoparticles from AgNO3 - substrate by Aspergillus niger BDU-A4. This condition determined pH = 7.4 at 37 °C,with 10 grams of biomass within 1mm AgNO3 solution in 100 ml suspension during 6 hours incubation. 2021-01-01T00:00:00Z http://hdl.handle.net/20.500.12323/5122 Title: Phylogenetic Relationships of some Wild and Cultivated Barley Accessions Using Seed Storage Protein Markers Authors: Serpoush, Moozhan Abstract: Barley is of renewed interest throughout the world because of its nutritional value and low glycemic index. It has been suggested that biochemical accomplished with molecular markers can be used to solve population diversity of barley. Hordeins are the storage proteins of the wild and cultivated barley samples. For this reason, we analyzed genetic diversity in the storage protein hordein encoded loci in seeds from 106 accessions of wild and cultivated of barley accessions from different countries. Cluster analysis by using Nei genetic distance and UPGMA methods all studied wild and cultivated barley accession divided into 6 main groups. Groping of Azerbaijan wild and cultivated barley accession in the same cluster showed that Azerbaijan cultivated barley accessions was clearly distinguished from its wild accessions. The presence of high level of diversity among the tested genotypes grouped into divergent clusters indicated their suitability for further research can be done in this direction by selecting superior barley genotypes. 2021-01-01T00:00:00Z http://hdl.handle.net/20.500.12323/5121 Title: Pathologoanatomic Changes in Birds with Associated Infections (Infectious Bronchitis and Esherichiosis) Authors: Gasimov, Rustam Abstract: Infectious diseases tend to be widespread in large poultry complexes containing a large number of birds in limited areas. It is an actual problem for industrial poultry farming. The presence of infectious diseases of viral and bacterial etiology in poultry farms has a negative effect not only on the exacerbation of the epizootic situation, but also it leads to a sharp decline of economic indicators. These infectious diseases are often associated and considered as a medical and environmental problem, due to the risk of spread among people. Experimental infection of chickens causes a slowdown in the growth and loss of cilia of epithelial cells, dilatation of tubular glands, infiltration of lymphocytes, mononuclear cells, plasma cells, as well as edema and fibroplasia of the proper layer of all parts of the oviduct. So, the clinical signs of IBC and its mixed course with escherichiosis, pathological changes and histological examination allow us to establish a preliminary diagnosis. 2021-01-01T00:00:00Z http://hdl.handle.net/20.500.12323/5120 Title: History and Future Prospects of Gazelle (Gazella Subgutturosa Guld, 1780) Population on the Island of Khara Zira Authors: Sarukhanova, Sevinj; Askerov, Elshad; Tagıyeva, Yelena; Hasanov, Nijat Abstract: The article considers the history of development of gazelle population released on the island of Khara Zira in 1965. Natural forage resources of these antelopes were estimated, factors influencing the dynamics of the gazelles population are studied, future prospects of this population are discussed and finally suggestions are made. 2021-01-01T00:00:00Z