Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Химия / Chemistry"”.
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New Strategies for the Qualitative and Quantitative Analysis of Nitrofural and Its New Derivatives // Нови стратегии за качествения и количествен анализ на Nitrofural и неговите нови производни
Over the last few decades, polymorphism has become increasingly important in global pharmaceutical production. Today, in pharmaceutical practice, the concept of polymorphism is the knowledge that polymorphism is the most crucial factor determining the biological effect and ultimate therapeutic …
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New Aspects in the Pharmaceutical Analysis of Quinine and Some of Its Oxidation Products // Нови аспекти във фармацевтичния анализ на Quinine и някои негови продукти на окисление
… motives are combined – those of physics, photochemistry, and fine organic synthesis. Not every one of the presented methods is reflected in the scientific literature, but they are still considered valid within the context of additional research that goes beyond the generally accepted framework …
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Determination of biologically active substances in Black Sea algae//Определяне на биологично активни вещества в черноморски водорасли
[EN] Marine organisms, especially marine algae are one of the most complete and natural food sources rich in a number of vital biologically active compounds, including polyunsaturated fatty acids, sterols, proteins, polysaccharides, antioxidants, pigments among others. Various biologically active …
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FATTY ACID COMPOSITION OF BLACK SEA AND FRESHWATER FISH SPECIES / МАСТНОКИСЕЛИНЕН СЪСТАВ НА ЧЕРНОМОРСКИ И СЛАДКОВОДНИ РИБИ
[eng] Total lipids and fatty acid composition of eleven Black Sea (sprat, goby, shad, horse mackerel, red mullet, turbot, bluefish, anchovy, garfish, grey mullet and bonito) and four freshwater (carp, bighead carp, catfish and trout) commercially important fish species were determined. Seasonal …
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Synthesis, Structure and Properties of New Iodine Derivatives of Natural Aromatic Acids // Синтез, структура и свойства на нови йодопроизводни на природни ароматни киселини
Iodination reactions of organic substrates are one of the most significant chemical transformations in pharmaceutical synthesis. No less important are the reactions that use the already obtained iodine-substituted compounds for the synthesis of much more complex ones. In addition, in view of the …
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Investigation of Persistent Organic Pollutants in Breast Milk // Изследване на устойчиви органични замърсители в майчино мляко
The thesis aims to investigate the concentrations of persistent organic pollutants (POPs) in human breast milk of women from North-Eastern Bulgaria and to assess the potential health risks. POPs are toxic anthropogenic substances that have proven chemical and biological stability. A total of 77 …
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Synthesis and Characterization of Bexarotene Derivatives with Potential Biological Activity // Получаване и охарактеризиране на бексаротенови производни с потенциална биологична активност
The dissertation deals with the preparation and characterization of the newly synthesized derivatives of the synthetic retinoid bexarotene. The continued and intensive study of the role of retinoids in the complex of differentiation, cell proliferation, and cellular growth processes determines the …
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Determination of Toxic Chemical Contents in the Black Sea Marine Water , Sediment and Biota //// Определяне съдържанието на токсични химични елементи в системата вода-седимент- биота
[EN] Heavy metals in marine systems are a global problem, since continuous exposure of marine organisms to their low concentrations may result in bioaccumulation, and subsequent transfer to man through the food web (Mendil et al, 2005). Heavy metals in the marine environment may originate from …
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FATSOLUBLE VITAMINS IN BLACK SEA AND FRESHWATER FISH//МАСТНОРАЗТВОРИМИ ВИТАМИНИ В ЧЕРНОМОРСКИ И СЛАДКОВОДНИ РИБИ
[EN] The objectives of the work were to investigate the fat soluble vitamins (A, E and D3) content and their percentige of recommended daily intake (RDI) of ten Black Sea (bonito, bluefish, goby, garfish, grey mullet, sprat, horse mackerel, red mullet, shad, and turbot) and five fresh water (common …