Palynological Investigations of Miocene Deposits on the New Siberian Archipelago (U.S.S.R.)

New paleobotanical data (mainly palynological) are reported from Miocene beds of the New Siberian Islands. The palynoflora has a number of distinctive features: the presence of typical hypoarctic forms, the high content taxa representing dark coniferous assemblages and the considerable proportion of small-leaved forms. Floristic comparison with the paleofloras or the Beaufort Formation in arctic Canada allows interpretation of the evolution of the Arctic as a landscape region during Miocene-Pliocene time. The paper is a preliminary analysis of the mechanisms of arctic florogenesis. The model of an "adaptive landscape" is considered in relation to the active eustatic drying of polar shelves.Key words: palynology, U.S.S.R., New Siberian Islands, Miocene, Arctic, florogenesisRÉSUMÉ. On rapporte de nouvelles données paléobotaniques (principalement palynologiques) venant de couches datant du miocène situées dans l’archipel de la Nouvelle-Sibérie. La palynoflore possède un nombre de caractéristiques particulières, parmi lesquelles, la présence de formes hypoarctiques typiques, la grande quantité de taxons représentant des assemblages de conifires sombres, ainsi qu’une collection considérable de formes à petites feuilles. Une comparaison floristique avec les paléoflores de la formation de Beaufort dans l’Arctique canadien permet d’interpréter l’évolution de l’Arctique en tant que zone peuplée d’espèces végetales durant le miocène et le pliocène. Cet article est une analyse préliminaire des mécanismes de la genèse de la flore arctique. Le modèle d’un paysage adaptatif est envisagé en rapport avec l’assèchement eustatique actif des plates-formes polaires.Mots clés: palynologie, U.R.S.S, archipel de la Nouvelle-Sibérie, miocène, Arctique, genèse de la flor

Improving Urban Public Operation: Experience Of Rostov-On-Don (Russia)

This paper estimates experience of development of urban public transport in city Rostov-on- Don, Russia. The main aims of policy of municipal authorities on reforming public transport are analysed. The integrated decision of a problem included achievement of the following purposes: creation most appropriate structure of management of city public transport, change of form of ownership of public transport operators, improvement of competition on the entry of market of transport services, optimization of a routes network of public transport.Institute of Transport and Logistics Studies. Faculty of Economics and Business. The University of Sydne

Geometric phase and o-mode blue shift in a chiral anisotropic medium inside a Fabry-P\'erot cavity

Anomalous spectral shift of transmission peaks is observed in a Fabry--P\'erot cavity filled with a chiral anisotropic medium. The effective refractive index value resides out of the interval between the ordinary and the extraordinary refractive indices. The spectral shift is explained by contribution of a geometric phase. The problem is solved analytically using the approximate Jones matrix method, numerically using the accurate Berreman method and geometrically using the generalized Mauguin--Poincar\'e rolling cone method. The $o$-mode blue shift is measured for a 4-methoxybenzylidene-4'-$n$-butylaniline twisted--nematic layer inside the Fabry--P\'erot cavity. The twist is electrically induced due to the homeoplanar--twisted configuration transition in an ionic-surfactant-doped liquid crystal layer. Experimental evidence confirms the validity of the theoretical model.Comment: the text is available both in English (Timofeev2015en.tex) and in Russian (download: other formats - source - Timofeev2015ru.tex, Timofeev2015rus.pdf

Plasma probe characteristics in low density hydrogen pulsed plasmas

Probe theories are only applicable in the regime where the probe's perturbation of the plasma can be neglected. However, it is not always possible to know, a priori, that a particular probe theory can be successfully applied, especially in low density plasmas. This is especially difficult in the case of transient, low density plasmas. Here, we applied probe diagnostics in combination with a 2D particle-in-cell model, to an experiment with a pulsed low density hydrogen plasma. The calculations took into account the full chamber geometry, including the plasma probe as an electrode in the chamber. It was found that the simulations reproduce the time evolution of the probe IV characteristics with good accuracy. The disagreement between the simulated and probe measured plasma density is attributed to the limited applicability of probe theory to measurements of low density pulsed plasmas. Indeed, in the case studied here, probe measurements would lead to a large overestimate of the plasma density. In contrast, the simulations of the plasma evolution and the probe characteristics do not suffer from such strict applicability limits. These studies show that probe theory cannot be justified through probe measurements

Simple Molecule-based Fluorescent Sensors For Vapor Detection Of Tnt

1,4-Diarylpentiptycenes (1a-e) were synthesized from 1,4-dichloro- or 1,4-difluoro-2,5-diarylbenzene derivatives by double base-promoted dehydrohalogenation to give corresponding arynes, which in the presence of anthracene undergo cycloaddition providing 1,4-diarylpentiptycenes in moderate overall yields. The resulting 1,4-diarylpentiptycenes show fluorescence modulated by the 1,4-aryl residues. The fluorescence is quenched in the presence of vapors of nitroaromatic compounds suggesting potential application in sensing of explosives

First Supramolecular Sensors for Phosphonate Anions

Fluorescent tripodal anion sensors with a 1,3,5-triethylbenzene core display a turn-on fluorescence response to phosphonate and phosphate anions and may be used as optical sensors. The properties of the receptors and sensors as well as their anion binding behavior were investigated both in solution and in solid state. The turn-on fluorescence response can be leveraged in sensing of phosphate anions and, most importantly, hydrolysis products of the nerve gas sarin, isopropyl methylphosphonate (IMP), and methylphosphonate (MP). The fluorescence signal amplification in the presence of anions allows for application of these molecules in a sensor microarray suitable for high-throughput screening.NSF CHE 0750303, EXP-LA 0731153BGSU (TIE Grant)Chemistr

The Origins of the Personal Type of Narrative in D. N. Mamin-Sibiryak’s Shorter Prose

Поступила в редакцию: 22.08.2022. Принята к печати: 06.10.2022.Submitted: 22.08.2022. Accepted: 06.10.2022.На материале малой прозы Д. Н. Мамина-Сибиряка (очерк, рассказ) выделяются различные типы нарратива — ситуация повествования от 1-го и 3-го лица, а также персональный тип повествования. В ряде рассказов очеркового типа («В худых душах», «Два хохла») выявляются специальные маркеры присутствия личного повествователя, выражающиеся в характерных мотивах любования, заинтересованности и любопытства. Доказывается, что Мамин-художник в период так называемого «второго дебюта» (1881–1882) начинал с освоения формы личного повествователя, наиболее характерной для жанра очерка, и постепенно переходил к аукториальному типу повествования, типичному уже для жанра рассказа и предполагающему форму объективного автора-повествователя. При этом отмечается, что и в форме аукториального повествования Мамин-Сибиряк успешно осваивал прием несобственно-прямой речи, или речевой интерференции героя и автора-повествователя, заставляющий говорить о зачаточных формах нового, персонального нарратива. Примерно с середины 1880-х гг. в творчестве Мамина-художника проявляется тенденция к персональному типу повествования, которая наиболее ощутимо проступает в рассказах «Коробкин», «Поправка доктора Осокина» и «Попросту», в центре внимания которых находится состояние раздвоенного сознания героя, оказавшегося в ситуации «человек у зеркала» (М. М. Бахтин) и выступающего в функции прямого субъекта познания. В произведениях этого же периода (рассказы «Между нами», «Старая дудка» и др.) уже отчетливо проявляется персональный тип повествования, который в рассказах 1900-х гг. находит свое логическое продолжение («Инфлуэнца. Монолог», «Клёцка и Клякса»). Отмечается также особое внимание писателя к ситуации взаимоотношения персонажа и навязываемого ему со стороны шаблонного прозвища, некого «чужого» слова-номинации, что опять-таки приводит к усилению акта самосознания героя и интенсификации персонального нарратива. Освоение в нарративной структуре рассказа персональной точки зрения приводит Мамина-Сибиряка к созданию новой жанровой формы — персонального «монолога» или «дневника», а также к ориентации на эстетический потенциал рецептивной поэтики, что обнаруживает точки сближения с жанровой разновидностью «рассказа открытия» А. П. Чехова.Based on D. N. Mamin-Sibiryak’s shorter prose (essays, stories), the author distinguishes various types of narrative, i.e. first and third person narration and a personal type of narration. In several stories of the essay type, special markers of the presence of the personal narrator stand out expressed in characteristic motifs of admiration, interest, and curiosity. The author proves that during the period of the so-called “second debut” (1881–1882), Mamin began with the development of the form of a personal narrator, most characteristic of the genre of the essay, and gradually switched to the auctorial type of narrative, typical already of the genre of the story and assuming the form of an objective narrator author. It is also noted that in the form of an auctorial narration, Mamin successfully mastered the device of nonpersonal direct speech, or the speech interference of the character and the narrator author, which brings us to the rudimentary forms of “personal” narrative. From about the mid-1880s, the tendency towards a personal narrative became apparent, which is most noticeable in the stories Korobkin, Doctor Osokin’s Amendment and Simply, which focus on the state of the split consciousness of the character who finds himself in a situation of “man in front of a mirror” (M. M. Bakhtin) and acts as a direct subject of cognition. In the works of the same period (stories Between Us, The Old Fife, and others) a personal type of narration emerges clearly, which continues logically in the stories of the 1900s (Influenza. Monologue, A Dumpling and a Blot). The writer pays attention to the situation of the relationship between the character and the stereotyped nickname imposed on him, a certain “foreign” word-nomination, which leads to an increase in the act of self-awareness of the character and an intensification of the personal narrative. Finally, the article concludes that the development of a personal point of view in the narrative structure of the story leads Mamin-Sibiryak to the emergence of a new genre form, i.e. a personal “monologue” or “diary”, as well as to focus on the aesthetic potential of receptive poetics, which reveals points of convergence with genre variation of Chekhov’s “discovery story”