DEVELOPMENT OF PILOT BATCH AND GRADE ESTIMATION OF COILS OF STEEL GRADE S355MC AT ROLLING MILL "1700", PJSC "ILYICH IRON AND STEEL WORKS"

Development of technology of hot rolling coils using thermo- mechanical controlled process for the wide-strip rolling mill and grade estimation of coils

KHARKOV PALACE OF CHILDREN AND YOUTH CREATIVITY GEOMODEL

The model was created in the О. М. Beketov National University of Urban Economy in Kharkiv students and teachers project "3D Models in Google Earth

Biomasa – obnovljiva sirovina za organske kemikalije (“Bijela kemija”)

Limited resources compel us to turn to renewable sources, new and old, that are capable of supporting sustainable development of the human society, and satisfying the demand in energy and materials. Plant life is far from being depleted; while its potential in supporting sustainable and renewable feedstock for organic material is great. This review is devoted to the use of biomass in production of basic organic chemicals, and to the main technological directions of biomass processing. These processes mainly involve transformation of cellulose and carbohydrates into final products by chemical or fermentation technologies. Some processes are already applied in industry, while their field of application is permanently growing. A number of chemical products can be isolated from plants directly including genetically modified species. Progress in chemical technology and biotechnology enables an almost 50–70 % substitution of oil feedstock with biomass.Ograničeni prirodni resursi prisiljavaju nas da se okrenemo obnovljivim izvorima, starim i novim, koji mogu osigurati održivost ljudske zajednice i zadovoljiti naše potrebe za energijom i materijalima. Biljni svijet ima ogroman potencijal kao sirovina za proizvodnju organskog materijala. Ovaj pregled posvećen je upotrebi biomase za proizvodnju nekih osnovnih organskih kemikalija te glavnim smjerovima razvitka tehnologije za preradu biomase. To su uglavnom procesi koji pretvaraju celulozu i ugljikohidrate u finalne proizvode kemijskim ili fermentacijskim procesima. Neki se procesi već primjenjuju u industriji, međutim njihov opseg primjene stalno raste. Brojni kemijski proizvodi mogu se izravno izdvojiti iz biljaka, uključujući i genetski modificirane vrste. Napredak u kemijskoj tehnologiji i biotehnologiji omogućuje gotovo 50-70 postotnu zamjenu nafte kao sirovine biomasom

Biomasa – obnovljiva sirovina za organske kemikalije (“Bijela kemija”)

Limited resources compel us to turn to renewable sources, new and old, that are capable of supporting sustainable development of the human society, and satisfying the demand in energy and materials. Plant life is far from being depleted; while its potential in supporting sustainable and renewable feedstock for organic material is great. This review is devoted to the use of biomass in production of basic organic chemicals, and to the main technological directions of biomass processing. These processes mainly involve transformation of cellulose and carbohydrates into final products by chemical or fermentation technologies. Some processes are already applied in industry, while their field of application is permanently growing. A number of chemical products can be isolated from plants directly including genetically modified species. Progress in chemical technology and biotechnology enables an almost 50–70 % substitution of oil feedstock with biomass.Ograničeni prirodni resursi prisiljavaju nas da se okrenemo obnovljivim izvorima, starim i novim, koji mogu osigurati održivost ljudske zajednice i zadovoljiti naše potrebe za energijom i materijalima. Biljni svijet ima ogroman potencijal kao sirovina za proizvodnju organskog materijala. Ovaj pregled posvećen je upotrebi biomase za proizvodnju nekih osnovnih organskih kemikalija te glavnim smjerovima razvitka tehnologije za preradu biomase. To su uglavnom procesi koji pretvaraju celulozu i ugljikohidrate u finalne proizvode kemijskim ili fermentacijskim procesima. Neki se procesi već primjenjuju u industriji, međutim njihov opseg primjene stalno raste. Brojni kemijski proizvodi mogu se izravno izdvojiti iz biljaka, uključujući i genetski modificirane vrste. Napredak u kemijskoj tehnologiji i biotehnologiji omogućuje gotovo 50-70 postotnu zamjenu nafte kao sirovine biomasom

Constant Electric Field Influence on the Rectification of the Transversal Current Induced by the Sinusoidal and Cnoidal Electromagnetic Waves in Graphene Superlattice

In graphene superlattice the direct current induced in perpendicular direction with relation to the superlattice axis by cnoidal and sinusoidal electromagnetic waves under the presence of longitudinal constant electric field was calculated. Direct current dependences on the cnoidal wave amplitude and on the longitudinal electric field intensity were investigated. Direct current dependence on the cnoidal wave amplitude was shown to have resonant character. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3544

AC-field Induced Gap Opening in the Vicinity of Extra Dirac Points in Band Structure of Graphene Superlattice

Floquet spectrum of electrons in graphene superlattice subjected to the ac electric field was investigated. The ac-field vector was assumed to oscillate perpendicularly to the superlattice axis. In the vicinity of extra Dirac points of superlattice band structure the gap was shown to be dynamically induced by the ac-field. Such effects are due to the nonadditivity of the electron spectrum of graphene superlattice

AC-field Induced Gap Opening in the Vicinity of Extra Dirac Points in Band Structure of Graphene Superlattice

Floquet spectrum of electrons in graphene superlattice subjected to the ac electric field was investigated. The ac-field vector was assumed to oscillate perpendicularly to the superlattice axis. In the vicinity of extra Dirac points of superlattice band structure the gap was shown to be dynamically induced by the ac-field. Such effects are due to the nonadditivity of the electron spectrum of graphene superlattice

Fosfor i fluor - kombinacija za bioregulatore

The review demonstrates the very high efficiency and usefulness of the fluorine-phosphorus combination in order to synthesize organic molecules for purposes of modern life science. For biochemistry, the "P-F-union" in" biomolecules enables investigation of the enzyme structure and mechanism of action more correctly, as well as creation of new anti-body enzymes. Enhancing or regulation of inhibitor properties of these compounds, their stability or selectivity allows creation of new drugs for treatment of numerous serious diseases, especially viral infections and cancer.Pregled opisuje vrlo visoku djelotvornost i korisnost kombinacije fluor-fosfor u sintezi organskih molekula za potrebe suvremenih prirodnih znanosti. U biokemiji npr. kombinacija P-F u biomolekulama omogućuje istraživanja građe enzima i mehanizme djelovanja puno točnije, ali i stvaranje novih enzimskih antitijela. Poboljšanje ili podešavanje inhibitorskih svojstava tih spojeva, njihove stabilnosti ili selektivnosti omogućuje stvaranje novih lijekova za brojne teške bolesti, osobito virusne infekcije i bolest rak

State support for the development of cattle breeding in Ukraine

The necessity for the state support of animal husbandry is important in market conditions. It is associated with unique characteristics, which are typical for this branch, its place and its importance for providing the food safety. The development of the branch is in difficult situation, which is resulted by the negative factors influence related to the instability of the external and internal environment. Consequently, there is a need to extend the researches related to an increase of state role and its importance in regulating of an economic process in attempt to prevent the possibility of a crisis and to assist a stable development of the livestock sector for a long period. The dynamics, the structure, and the amount of the beef production in Ukraine are considered in the articl