Неопубликованные виды ругоз В. А. Желтоноговой из отложений девона Салаира

Даются монографические описания видов девонских ругоз Салаира из коллекции В.А. Желтоноговой, которая при жизни не успела их опубликовать. Автором наряду с описанием видов была произведена ревизия их родового состава. Представленные виды ругоз публикуются впервые

Сравнительная характеристика состава продуктов флэш-пиролиза фракций смол и асфальтенов усинской нефти

Узкие фракции смол и асфальтенов нефти Усинского месторождения (республика Коми), полученные дробным осаждением асфальтенов и хроматографическим разделением смол, охарактеризованы методами пиролитического анализа в варианте "Rock Eval" и флэш-пиролиза (650 °С, 20 с) с хроматомасс-спектрометрическим анализом летучих продуктов в режиме "on line". Показано, что изученные образцы содержат от 2,3 до 15,3 мас. % низкомолекулярных органических соединений. Продукты флэшпиролиза изученных образцов отличаются относительным содержанием таких типов соединений, как нормальные и изопреноидные алканы, ?-олефины, циклогексаны, хейлантаны и гопаны, гопены, прегнаны и стераны, алкилбензолы, нафталины, фенантрены и антрацены, бензо- и дибензотиофены, а также неидентифицированных коксообразующих фрагментов

Studies towards the synthesis of fused N-Heterocyclic carbene precursors

This thesis describes the preparation of a various NHC ligands with five and six-membered rings, different fused aromatic cores and the subsequent synthetic development of their complexation of with Ag, Ru and Pd. The investigation and preparation of these compunds was with the intention of exploring their chemical and physical properties. The synthesis of the NHC ligands proved to be difficult, but analysis and characterisation of the side products from the reactions helped to establish successful synthetic methodologies. In both the five and six-membered research conducted a common attribute was established of a pyrid-2-yl substituent at the 1 position or both the 1 and 3 positions, thus providing new NHC ligands to investigate. The organic syntheis of the research focused on two NHC ligand functionalites, five and six membered rings. The six memerbered rings focused on 1H-perimidine as the core unit and the design of both bidentate and tridentate NHC ligands to mimic the structural binding relationship of 2,2’- bipyridine (bpy) and 2,2’:6’2”-terpyridine (tpy) with various metal salts. The synthesis of the bpy analogues was achieved in good overall yields with minimal synthetic challenges. However, the tpy analogue was unable to be realised due to time constraints and problems associated with its synthesis. The five membered NHC ligands synthesised were to investigate the physical effects of systematically increasing the size of its aromatic core. The main focus of the research was on the phenanthrene imidazole NHC ligands. This was investigated due to the minimal research that has been conducted on this core unit and NHC-complexes. Synthesis of the two-bidentate NHC ligands with an imidazole head group and fused phenanthrene backbone were completed, but this was with a picolyl substituent at the 1 position rather than the pyrid-2-yl substituent. This failure to isolate this product was attributed to steric influences. Pyrene-fused-imidazole NHC ligands were also investigated and pyrene offers a NHC core that hasn’t been investigated previously. However, synthesis and isolation of the NHC ligands proved to be difficult and was associated with the poor solubility of the NHC ligands. The organometallic NHC synthesis was studied extensively with the main focus on establishing appropriate conditions to give a NHC complex. The main metal investigated was ruthenium as subsequent NHC complexes were expected to have potentially interesting properties such as luminescence. The synthesis of a perimidine and phenanthrene NHC ruthenium complexes have not been isolated before, thus giving new NHC complexes. Many different synthetic routes were attempted to synthesise a perimidine NHC ruthenium complex. However, this proved difficult due to associated higher reactivity of the carbene carbon of perimidine with a new side product as a result of this research. The phenanthrene NHC complex synthesis suffered due to time constraints but potential methodology for their synthesis is stated

Безпека людини у сучасних умовах

У збірнику приводяться тези наукових доповідей ХІ Міжнародної науково-методичної конференції та 138 Міжнародної науково-методичної конференції Європейської Асоціації наук з безпеки (EAS) "Безпека людини у сучасних умовах", 5-6 грудня 2019 р. Тези доповідей з напрямку життєдіяльності людини, в яких розглянуті питання безпеки підприємств, сільського господарства, транспорту та оточуючого середовища, моніторингу навколишнього середовища, ролі інформаційних та експертних систем у вирішенні актуальних питань щодо захисту життя та здоров’я людини. Наукові доповіді, що наведено у збірнику, можуть бути корисними для науковців, викладачів вищих навчальних закладів освіти, аспірантів, студентів та слухачів курсів підвищення кваліфікації.The book presented scientific articles of the XI International Scientific and Methodological Conference and 138 International Scientific Conference of the European Association of Security (EAS) "Human safety in modern conditions", December 5-6, 2019. Theses of reports on the field of safety of living people that address issues of the enterprise safety, agriculture, transport and environment, environmental monitoring, the role of information and expert systems that addressing issues on protecting human life and health. Scientific reports that are in the collection can be useful for scientists, teachers of higher educational institutions, graduate students, and training courses

Оптимизация деятельности предприятия за счёт внедрения инструментов бережливого производства

Объект исследования: основные бизнес-процессы ООО "Чистый дом". Цель работы: разработка предложений по улучшению бизнес-процессов в ООО "Чистый дом". В процессе исследования был проведен анализа бизнес-процессов ООО "Чистый дом", выявлены текущие проблемы процесса, разработаны мероприятий по их решению.Object of research: the main business processes of ООО "Чистый дом". Purpose of work: odevelopment of proposals for improving business processes at ООО "Чистый дом". In the course of the study, an analysis of the business processes of ООО "Чистый дом" was carried out, the current problems of the process were identified, and measures were developed to solve them

Homotopy on spatial graphs and generalized Sato-Levine invariants

Edge-homotopy and vertex-homotopy are equivalence relations on spatial graphs which are generalizations of Milnor's link-homotopy. Fleming and the author introduced some edge (resp. vertex)-homotopy invariants of spatial graphs by applying the Sato-Levine invariant for the constituent 2-component algebraically split links. In this paper, we construct some new edge (resp. vertex)-homotopy invariants of spatial graphs without any restriction of linking numbers of the constituent 2-component links by applying the generalized Sato-Levine invariant.Comment: 16 pages, 13 figure