Перспективы развития фундаментальных наук. Т. 2 : Химия

Сборник содержит труды участников XV Международной конференции студентов, аспирантов и молодых учёных «Перспективы развития фундаментальных наук», представленные на секции «Химия». Для студентов, аспирантов, молодых ученых и преподавателей, специализирующихся в области синтеза и изучения свойств функциональных материалов, физико-химических методов исследования материалов, наноматериалов, экологии, органического синтеза, а также катализа и нефтехимии

Experimental evaluation of the effectiveness of water mist automated fire extinguishing systems for oil transportation

Experimental investigation of regularities of carryover of water mist droplets (radius of 50 - 500 [mu]m) by high temperature (500 - 1800 K) products of combustion of typical petroleum products (oil, gasoline, kerosene, etc.) was carried out. The panoramic optical methods and high-speed hardware and software systems were used. Speeds of droplets after mixing with oncoming high temperature gases were determined. Conditions of continuation of droplets movement through combustion products with preservation of initial trajectory in spite of intensive evaporation and braking were found. The predictive evaluation of effectiveness of water mist use for extinguishing of fires involving oil and typical petroleum products

Русский язык - английский язык: политика единоязычия в российском образовании

Статья посвящена прочно закрепившейся в российском образовании политике «английского единоязычия», а также современному состоянию языковой политики в контексте парадигмы русский язык - английский язык. В статье рассмотрены проблемы языкового регулирования и предложена модель лингвообразования, обусловленная социолингвистическими факторами и актуальными глобализационными процессами

Повышение конкурентоспособности предприятия как фактор экономического роста промышленности России на примере нефтяного комплекса

Объектом исследования является: конкурентоспособность АО "Сибирская Сервисная Компания". Предметом исследования являются: факторы и условия конкурентоспособности предприятия, влияющие на экономический рост промышленности. Цель работы – разработка мероприятий по повышению конкурентоспособности АО "Сибирская Сервисная Компания". В результате исследования: разработаны мероприятия по повышению конкурентоспособности АО "Сибирская Сервисная Компания". Практическое значение: на основе оценки эндогенных и экзогенных факторов разработаны сводные мероприятия, дана оценка эффективности от внедрения организационных и технико–технологических мероприятий по повышению конкурентоспособности предприятия.The object of study is: the competitiveness of JSC "Siberian Service Company". The subject of the study are: factors and conditions of enterprise competitiveness, affecting the economic growth of industry. The purpose of the work is the development of measures to increase the competitiveness of Siberian Service Company JSC. As a result of the study: measures were developed to increase the competitiveness of Siberian Service Company JSC. Practical value: based on the assessment of endogenous and exogenous factors, summary measures have been developed, an assessment of the effectiveness of the introduction of organizational, technical and technological measures to increase the competitiveness of the enterprise has been given

Polymer- und liposomstabilisierte Ferrofluide und ihre Funktionalisierung

This work deals with the preparation of 10 nm, 13 nm and 130 nm sized Fe3O4 crystallites. The 10 nm and 13 nm sized Fe3O4 crystallites are superparamagnetic and therefore subdomain particles. Their specific heat absorption rates from high frequency alternating magnetic fields are 20 times higher (50-65 W/ g Fe3O4) compared to those of multidomain Fe3O4 particles (3 W/ g Fe3O4). Colloidal suspensions of the 13 nm sized Fe3O4 particles are formed by a procedure, which includes a probe sonication step. The polymers alginate and polyacrylate used for stabi-lisation bear carboxylate groups. The procedure results in a fraction of relatively large sized (250-1100 nm) and another one with considerable smaller sized (50-180 nm) polymerstabili-sed particles (PSM). Because of the carboxylate groups on their surface, the larger sized PSM may be suitable for removing Ni2+ ions from waste water. Specific binding capacities up to 40 and 170 nmol Ni2+/mg Fe3O4 are determined for alginate- and polyacrylatestabilised particles respectively. The smaller sized PSM are of interest for in vivo applications, e.g. for "targeted drug delivery". Furthermore, liposomestabilized magnetic particles (LipoM) are modified by chemical means with regard to future medical applications. First, a phospholipid polyethylen glycol deriva-tive (DCxPE-PEG-biotin) is synthesized. Vesicles or LipoM with embedded DCxPE-PEG-biotin have prolonged blood circulation times compared to classical LipoM which bear no PEG chains. The biotin groups can bind (strept)avidinylated biomolecules, such as monoclo-nal antibodies required for "targeted drug delivery", very tightly to the LipoM surface (biotin-avidin binding). This is demonstrated with streptavidinylated alkaline phosphatase as a model protein, whose enzymatic activity can be readily monitored spectrophotometrically. With regard to the use of LipoM for "targeted drug delivery" the DCxPE-PEG-biotin must be firmly anchored in the lipidic envelope. The transfer experiments reveal, that the firmness of the anchoring is strongly influenced by the PEG-biotin moiety and the fatty acyl chain length of the molecule and the physical state ("gel" or "liquid-crystalline" state) of the vesicle. DC18:0PE-PEG-biotin ist firmly anchored in "gel-like" vesicles and subsequently this molecule meets all requirements for the preparation of vesicles for use in "targeted drug delivery"

Berufliche Selbständigkeit von Frauen: ein Aufbruch zu neuen Ufern? : theoretische Verortung und Untersuchung der neueren Entwicklungen

Bamberg, Univ., Diss., 199