Година XXIV, Книжка 3, 2015<<Архив>>
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Статии
ПОСТНОРМАЛНАТА НАУКА – БЕЛЕЗИ И НОВИ ТЕНДЕНЦИИ
С преодоляването на блоковото разделение на света и науката възстанови своята глобална цялост. Процесите на диференциация на науката се замениха от процеси на интеграция и заличаване на границите между частните научни дисциплини; на преден план в научните изсл...
post-normal science, integration, 3P-model, scientometrics, index of Hirsch
SYNTHESIS OF FLUORINATED HYDROXYCINNAMOYL DERIVATIVES OF ANTI-INFLUENZA DRUGS AND THEIR BIOLOGICAL ACTIVITY
The emergence of a novel pandemic influenza A (H1N1) strain in 2009 is an evident mark for the unremitting risk of respiratory viral diseases. Influenza outbreaks and development of desease and could be overcome by use of vaccines and antivirals. Currently, cli...
M2 ion channel blockers, neuraminidase inhibitors, N-hydroxycinnamoyl fluorinated amino acids amides
SYNTHESIS AND ANTIVIRAL ACTIVITY OF SOME AMINO ACIDS DERIVATIVES OF INFLUENZA VIRUS DRUGS
A series of new rimantadine (RS)-1-(1-adamantyl)ethanamine) analogues with some amino acids (alanine, valine, phenylalanine) have been synthesized and their antiviral activity against influenza A virus has been studied. Among the tested compounds the moderat...
Rimantadine, amino acids, influenza virus
NEW DERIVATIVES OF OSELTAMIVIR WITH BILE ACIDS
Several derivatives of oseltamivir with bile acids (cholic, deoxycholic and chenodeoxycholic acids) were prepared, using N, N dicyclohexylcarbodiimide (DCC) as coupling reagent. The chemical modifications were made in order to enhance the bioavailability...
oseltamivir, bile acids, Iinfluenza virus
MONOHYDROXY FLAVONES. PART III: THE MULLIKEN ANALYSIS
The purpose of this article is to compare Mulliken charges in monohydroxy flavones in order to assess the intramolecular reasons determining the electron density distribution and reactivity in all ten isomers. What would also be estimated is the role of the po...
Mulliken population analysis, monohydroxy flavones.
LEU-ARG ANALOGUES: SYNTHESIS, IR CHARACTERIZATION AND DOCKING STUDIES
Leu-Arg is a kyotorphin receptor antagonist. It is very important to control antinociception and this could be achieved by modifications in agonist’s or antagonist’s molecules. Two analogues of Leu-Arg were synthesized, their IR- spectral characteristics we...
kyotorhin, IR, docking, Mu-opioid receptor, GOLD
SYNTHESIS OF 2-FLUOROMETHYL-7(ARYLSULFANYLMETHYL) NAPHTHALENES
Starting from the readily available 2,7-bis(bromomethyl)naphthalene, two 2-fluoromethyl-7-(arylsulfanylmethyl) naphthalene derivatives were prepared in four steps. It was found that direct, partial treatment of 2,7-bis(bromomethyl)naphthalene with thiopheno...
2-fluoromethyl-7-(phenylsulfanylmethyl)naphthalene, 2-fluoromethyl-[(4-bromophenyl)sulfanylmethyl]naphthalene, synthesis
INVESTIGATION OF THE ETHERIFICATION PROCESS UNDER MODEL MIXTURE
The composition of fuel has changed tremendously, and also engine technology has played an important role in improvements related to combustion. At the same time the number of motor vehicles has increased rapidly world-wide and the cut-backs on harmful emiss...
etherification, gasoline, model mixture, additive
MODIFIED QUECHERS METHOD FOR DETERMINATION OF METHOMYL, ALDICARB, CARBOFURAN AND PROPOXUR IN LIVER
N-Methyl carbamates insecticides are widely used in homes, gardens, and agriculture. Unfortunately, traces of them can further be found into animal tissues, milk, honey, eggs, etc. Therefore, food safety is an integral part of the EU policy for protecti...
QuEchERS, pesticides, N-methyl carbamates, HPLC
ORGANIC COMPOUNDS AS INHIBITORS FOR MILD STEEL IN \(\mathbf{1} \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}\)
The inhibitory effect of two organic compounds has been studied: 2-(4-cyanophenyl)-1-oxo-1H-inden-3-yl acetate and 2-(4-fluorophenyl)-1-oxo-1Hinden-3-yl acetate on samples of Steel 3 in \(0.1 \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}\). Using gravimetric ana...
corrosion, steel 3, organic compounds, inhibitors
MICROBIAL X CELLS – INNOVATIVE MULTIPURPOSE BIOELECTROCHEMICAL SYSTEMS
This paper reviews the state-of-the art of the bioelectrochemical systems (BESs), utilizing whole living cells as biocatalysts, which has been intensively developed during the last decade. The principles of operation, specificity and potential applications...
bioelectrochemical systems, microbial fuel cells, microbial electrolysis cells, practical application
LACTOBACILLUS PLANTARUM AC 11S AS A BIOCATALYST IN MICROBIAL ELECYTOLYSIS CELL
This study demonstrates for the first time the utilization of the bacterial strain <i>Lactobacillus plantarum</i> АС 11S as a biocatalyst in microbial electrolysis cell (MEC). The microorganisms were preliminarily immobilized on carbon felt, used as a bioano...
microbial electrolysis cell, <i>Lactobacillus plantarum</i> АС 11S, biocatalyst, hydrogen production
Pd-Au DEPOSITES ON NI-FOAM AS ANODIC ELECTROCATALYSTS FOR DIRECT BOROHYDRIDE FUEL CELL
In this study, Pd and Au were deposited on Ni-foam and examined as electrocatalysts for borohydride electrooxidation. The Pd-Au deposits were developed by co-deposition from mixed solutions of Pd\(^{2+}\) and Au\(^{3+}\)with different ratios of both metals....
Pd-Au catalyst, borohydride electrooxidation, direct borohydride fuel cell
SEDIMENT MICROBIAL FUEL CELLS AS POWER SOURCES FOR SMALL ELECTRICAL CONSUMERS
Sediment Microbial Fuel Cells (SMFCs) are considered as reliable devices for conversion of the chemical energy of organic matter, containing in aquatic sediments, into electrical energy. In this study, nine freshwater SMFCs were connected in series or in pa...
sediment microbial fuel cell, energy conversion, bioelectrochemical power sources, power management system
SOLID PHASE EXTRACTION OF Au(III) USING SILICA GEL MODIFIED WITH 4-AMINOANTIPYRINE SCHIFF BASES
The degree of extraction of Au (III) from hydrochloric acid solutions on 4-aminoantipyrine Schiff bases modified silica gel was studied. Quantitative sorption of Au (III) on the surface of the sorbent containing azomethine group was achieved in the presence...
solid phase extraction; noble metals; 4-aminoantipyrine schiff base
INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROSCOPY – DETERMINATION OF RARE EARTH AND PLATINUM GROUP OF ELEMENTS
The economic importance of rare earth elements and platinum group of elements has led to the development of analytical methods, which have to ensure their accurate quantification in different type of samples. Radial viewing 40.68 MHz inductively coupled plas...
ICP-OES; rare earth elements; platinum group element; matrix effects; detection limits
STUDYING THE PROCESS OF DEPOSITION OF ANTIMONY WITH CALCIUM CARBONATE
Industrial production of copper solutions, in addition to the basic components (Cu, Ni), contain undesirable impurities which include arsenic and antimony. The process of withdrawal of antimony in copper electrolyte with calcium carbonate, which is present in...
copper production, electrolyte, antimony, calcium carbonate, copper, calcium antimonate