Study of thermodynamics of complex formation of flavonoids of steviа (Stevіa rebaudіana Bertonі) leaves
The study of the formation mechanism of flavonoid complex with aluminum ions. On the basis of the negative low Gibbs free energy values it found that chelation is a natural phenomenon. Determination of the antioxidant capacity of flavonoids stevia leaf.
Подобные документы
Features of the two-phase model of the structure of keratin fibers. Estimation of the importance of critical and equilibrium stresses in the fibril, transfer of its stress to the matrix. Study of a possible connection between microfibrils and matrix.
статья, добавлен 30.05.2022Comparison of the results of processing arrays light absorption alternate method of incorporating calibration surface with other methods. Determination of Ni2 +, Co3 +, Fe2 +, Cu2 + from 1-(2-pyridylazo)-2-naphthol in aqueous-micellar environment.
статья, добавлен 23.02.2016Synthesis of a batch of aluminum-doped titanium dioxide and testing the reaction of photocatalytic degradation of phenol in an aqueous suspension. Studies of the crystal structure of rutile anatase using XRD, XPS, Raman spectroscopy and EMF methods.
статья, добавлен 25.08.2017Application and classification of construction materials. Definition of key indicators affecting the choice of material. Alloys based on copper and aluminum. Properties, applications and benefits of innovative materials, thermosetting plastics, ceramics.
статья, добавлен 10.03.2019Analysis of criteria for steels warping susceptibility under the thermochemical treatment. Study of value of the details warping during the quenching. Analysis of residual internal pressures in hardened layer and kinetics of austenitic grain growth.
статья, добавлен 30.01.2017Features of defining the basic principles of the formation of the "unisex" style direction as a design practice in clothing design. Analysis of ways to identify the design and artistic compositional properties of the development of a costume collection.
статья, добавлен 25.04.2022The concept, meaning and essence of a digital work, the use of technologies and equipment in the digitization of works. Features of converting a work into a digital format. Study of the main recommendations of the International Telecommunication Union.
статья, добавлен 17.09.2021Consideration of the laws dynamics and growth of vapor bubbles and crystals in the solution. Study of dynamic behavior of a three-phase, two-component medium in an axially symmetric channel. Analysis of the conditions necessary for the crystallization.
статья, добавлен 24.02.2016Determination the rigidity of constructive elements involved into the rated diagram of electromechanical system of the drive of spherical mill. Defining the rigidity of the elements entering a kinematic circuit of any electromechanical systems of drives.
статья, добавлен 28.11.2016Search for ways to reduce emissions of pollutants. Biomass as a composite material. Laboratory installation for glucose fermentation to ethanol. Study the concentration of xylose as a function of time. Process flow diagram of the synthesis of bioethanol.
статья, добавлен 23.06.2018An analysis of demand in the semiconductor industry, covering all three phases of materials: gases, liquids and solids. The study of the peculiarities of application for solids which includes a semiconductor substrate, metal, dielectric, an organic film.
книга, добавлен 14.03.2014Features the design of tooling for casting under pressure of zinc alloys. The problem that arise when designing a press-forms of analysis. Experiments to study thermal stability of materials, parts, equipment subject to cyclic thermo-mechanical treatment.
статья, добавлен 17.12.2016The study of the Microbiology of the procedure of biological fermentation, physico-chemical characteristics of activated sludge of the Bortnichy station of aeration. Offer possible ways to increase the speed of the procedure of biological fermentation.
статья, добавлен 27.11.2016Processes of change of mechanical properties and microtexture of castings from gazars. Effect of monolithic areas formation inside the porous structure. Consideration of monolithic formations inside porous structure of gazar after annealing, x 50.
статья, добавлен 30.01.2016Research microstructure Rodent dental alloy based on Ni-Cr-Mo after casting in a vacuum furnace. Chemical analysis of crystallographic orientation and topography. Bold molybdenum carbides, eutectic-P and particles of aluminum oxide within dendrites.
статья, добавлен 23.02.2016The study of structural changes during hot deformation metal during controlled rolling. The influence of preheating temperature and deformation degree on the size and shape of austenite grains. The definition of the polygonal structure of the austenite.
статья, добавлен 30.01.2017Consideration of the concept of social change in the framework of social psychology. The role of different levels of methodology varies depending on the level of social change. Specifics of psychological research of social changes at different levels.
статья, добавлен 16.08.2020Study of problems the sufficient conditions for the existence of solutions of linear nonhomogeneous impulsive boundary value problems with small perturbations when generating boundary value problem of impulsive has solutions for arbitrary right-hand side.
статья, добавлен 30.01.2017Development of the composition of water-epoxy coating NIPU. Study the compatibility of components in water-based coatings. The optimum ratio of the components of the composition to obtain the necessary physical and mechanical properties of the coating.
статья, добавлен 29.07.2017Intensive deformation of the elastic system of the machine - specific features of the cutting process. Circumcision of the gear with a disk the cutter in the continuous circular movement of the pinion - essence of the radial-circular cutting mode.
статья, добавлен 14.09.2016The study of methods of improving mechanical properties of coatings of implants by reducing the value of young's modulus and coefficient of friction in the fluids of the body to improve the tribological parameters of the implants with ceramic coatings.
статья, добавлен 29.01.2016Review of works on the creation and study of environmentally friendly nanostructured polymer composites. Technology of production and application of nanocellulose. Development of new environmentally friendly hydrophobic polymer composites, their scope.
статья, добавлен 29.07.2017The configuration of an anorectal pressure gauge probe, the study of the location of sensors, the radial array of anal sensors, the location and length of the balloon, the pressure sensor inside the balloon. List of tests based on potential indication.
статья, добавлен 29.03.2020Aniline and its polymerization on cotton fabric to produce conductive cotton by chemical polymerization. Polyaniline is one of the electrically conductive polymers. Polymerization using several concentrations of aniline (ANI) and hydrochloric acid.
статья, добавлен 15.01.2021An overview of the current trend in the development, production and application of efficient biodegradable polymer materials and composites. Ways of hybrid modification of biodegradable polymeric composite for obtaining effective products based on them.
статья, добавлен 24.09.2023