RAPE SEED OIL TETRAHYDROFURFURYLESTERS

The transesterification of vegetable oil using various kinds of alcohols is a simple and efficient renewable fuel synthesis technique. Products obtained by modifying natural triglycerides in transesterification reaction substitute fossil fuels and mineral oils. Currently the most significant is the biodiesel, a mixture of fatty acid methyl esters, which is obtained in a reaction with methanol, which in turn is obtained from fossil raw materials. In biodiesel production it would be more appropriate to use alcohols which can be obtained from renewable local raw materials. Ethanol rouses interest as a possible reagent, however, its production locally is based on the use of grain and therefore competes with food production so it would implicitly cause increase in food prices. Another raw material option is alcohols that can be obtained from furfurole. Furfurole is obtained in dehydration process from pentose sugars which can be extracted from crop straw, husk and other residues of agricultural production. From furfurole the tetrahydrofurfuryl alcohol (THFA), a raw material for biodiesel, can be produced. By transesterifying rapeseed oil with THFA it would be possible to obtain completely renewable biodiesel with properties very close to diesel [2-4]. With the purpose of developing the synthesis of such fuel, in this work a three-stage synthesis of rapeseed oil tetrahydrofurfurylesters (ROTHFE) in sulphuric acid presence has been performed, achieving product with purity over 98%. The most important qualitative factors of ROTHFE have been determined - cold filter plugging point, cetane number, water content, Iodine value, phosphorus content, density, viscosity and oxidative stability

Prediction the level of air pollution of the city from active technogenic sources

Создание методики базируется на совместном решении уравнений конвективно-диффузионного переноса примеси для каждого загрязнителя, который непосредственно поступает от предприятия и образуется дополнительно за счет химических реакций в атмосфере. Разработанное программное обеспечение позволяет проводить ряд численных экспериментов и получать зоны загрязнения атмосферного воздуха диоксидом азота, определять районы, которые наиболее подвержены загрязнению с учетом влияния метеорологических параметров.Створення методики методика базується на спільному розв’язанні рівнянь конвективно-дифузійного переносу домішки для кожного забруднювача, який безпосередньо надходить від підприємства і утворюється додатково за рахунок хімічних реакцій в атмосфері. Розроблене програмне забезпечення дозволяє проводити ряд чисельних експериментів і отримувати зони забруднення атмосферного повітря діоксидом азоту, визначати райони, які найбільш схильні до забруднення з урахуванням впливу метеорологічних параметрів.Development of methodology and software for determining levels and zones of atmospheric air pollution by emissions from «Interpipe Nizhnedneprovsky Pipe Plant»

Special features of the 9^9Be→\to2He fragmentation in emulsion at an energy of 1.2~A~GeV

The results of investigations of the relativistic $^9$Be nucleus fragmentation in emulsion which entails the production of two He fragments of an energy of 1.2~A~GeV are presented. The results of the angular measurements of the $^9$Be$\to$2He events are analyzed. The $^9$Be$\to^8$Be+n fragmentation channel involving the $^8$Be decay from the ground (0$^+$) and the first excited (2$^+$) states to two $\alpha$ particles is observed to be predominant.Comment: 10 pages, 6 figures, conference: Conference on Physics of Fundamental Interactions, Moscow, Russia, 5-9 Dec 2005 (Author's translation

Enzymatic synthesis of magnetic nanoparticles

We report the first in vitro enzymatic synthesis of paramagnetic and antiferromagnetic nanoparticles toward magnetic ELISA reporting. With our procedure, alkaline phosphatase catalyzes the dephosphorylation of L-ascorbic-2-phosphate, which then serves as a reducing agent for salts of iron, gadolinium, and holmium, forming magnetic precipitates of Fe45±14Gd5±2O50±15 and Fe42±4Ho6±4O52±5. The nanoparticles were found to be paramagnetic at 300 K and antiferromagnetic under 25 K. Although weakly magnetic at 300 K, the room-temperature magnetization of the nanoparticles found here is considerably greater than that of analogous chemically-synthesized LnxFeyOz (Ln = Gd, Ho) samples reported previously. At 5 K, the nanoparticles showed a significantly higher saturation magnetization of 45 and 30 emu/g for Fe45±14Gd5±2O50±15 and Fe42±4Ho6±4O52±5, respectively. Our approach of enzymatically synthesizing magnetic labels reduces the cost and avoids diffusional mass-transfer limitations associated with pre-synthesized magnetic reporter particles, while retaining the advantages of magnetic sensing

Electromagnetic dissociation of relativistic 8^8B nuclei in nuclear track emulsion

Experimental data on fragmentation channels in peripheral interactions of $^8$B nuclei in nuclear track emulsions are presented. A detailed analysis made it possible to justify selections of events of the electromagnetic-dissociation process $^8$B $\to^7$Be + \emph{p} and to estimate its cross section. Events of $^{10}$C peripheral dissociation that were observed in the same exposure are described.Comment: 12 pages, 10 figures, 4 tables, Published in Phys.Atom.Nucl.72:690-701,200

Fragmentation of relativistic nuclei in peripheral interactions in nuclear track emulsion

The technique of nuclear track emulsions is used to explore the fragmentation of light relativistic nuclei down to the most peripheral interactions - nuclear "white" stars. A complete pattern of therelativistic dissociation of a $^8$B nucleus with target fragment accompaniment is presented. Relativistic dissociation $^{9}$Be$\to2\alpha$ is explored using significant statistics and a relative contribution of $^{8}$Be decays from 0$^+$ and 2$^+$ states is established. Target fragment accompaniments are shown for relativistic fragmentation $^{14}$N$\to$3He+H and $^{22}$Ne$\to$5He. The leading role of the electromagnetic dissociation on heavy nuclei with respect to break-ups on target protons is demonstrated in all these cases. It is possible to conclude that the peripheral dissociation of relativistic nuclei in nuclear track emulsion is a unique tool to study many-body systems composed of lightest nuclei and nucleons in the energy scale relevant for nuclear astrophysics.Comment: 15 pages, 4 figures, 4 tables, conference: Relativistic nuclear physics: from Nuclotron to LHC energies, Kiev, June 18-22, 200

SOCIAL HEALTH DETERMINES MENTAL AND PHYSICAL DEVELOPMENT OF YOUNG PEOPLE

The article deals with the issue of modern understanding of social health and its impact on the mental and physical development of a young person in high school. Using the method of analysis, a study of the term "social health" in its modern sense was conducted. Using the method of M. Rokich, a study of terminal and instrumental in 363 students of the direction of training "State and municipal management" AT the Ural Federal University named after the first President of Russia B. N. Yeltsin was conducted. The results show that the system of socially-oriented values of a young person determines his social health, as well as determines his mental and physical development.В статье рассматривается вопрос о современном понимании социального здоровья и влиянии его на психическое и физическое развитие молодого человека в условиях высшей школы. С помощью метода анализа проведено исследование термина «социальное здоровье» в современном его понимании. С помощью методики М. Рокича проведено исследование терминальных и инструментальных у 363 студентов направления подготовки «Государственное и муниципальное управление» в ФГАОУ ВО «Уральский федеральный университет имени первого Президента России Б. Н. Ельцина». Полученные результаты показывают, что система социально-ориентированных ценностей молодого человека определяет его социальное здоровье, а также определяет его психическое и физическое развитие

Assessment of engagement and professional burnout syndrome in doctors during study and work

The aim of the study – to assess the involvement and professional burnout syndrome among doctors during training and work.Цель исследования – оценить вовлеченность и синдром профессионального выгорания у врачей во время обучения и работы

Clustering in light nuclei in fragmentation above 1 A GeV

The relativistic invariant approach is applied to analyzing the 3.3 A GeV $^{22}$Ne fragmentation in a nuclear track emulsion. New results on few-body dissociations have been obtained from the emulsion exposures to 2.1 A GeV $^{14}$N and 1.2 A GeV $^{9}$Be nuclei. It can be asserted that the use of the invariant approach is an effective means of obtaining conclusions about the behavior of systems involving a few He nuclei at a relative energy close to 1 MeV per nucleon. The first observations of fragmentation of 1.2 A GeV $^{8}$B and $^{9}$C nuclei in emulsion are described. The presented results allow one to justify the development of few-body aspects of nuclear astrophysics.Comment: 7 pages, 8 figures, 3 tables, Nuclear Physics in Astrophysics-2, 16-20 May, 2005 (ATOMKI), Debrecen, Hungar