970 research outputs found
(Table 1) Chemical composition of basalts from the rift valley of the Knipovich Ridge
No full text(Table 1) Chemical composition of basalts from the rift valley of the Knipovich Ridg
La polvere della memoria. Osservazioni sul libro di M. Stepanova "Pamjati pamjati"
No full textLa polvere della memoria. Osservazioni sul libro di M. Stepanova Pamjati pamjati
Il libro di M. Stepanova, Pamjati pamjati (2017), definito dai critici “il miglior romanzo russo degli ultimi anni”, è entrato dopo pochi giorni dalla sua pubblicazione nelle classifiche dei libri più ven-duti, dando grande notorietà a una poetessa e saggista, nota e apprezzata nei circoli intellettuali pro-gressisti. L’opera si basa sul desiderio dell’autrice di raccogliere e salvare i ricordi e le testimonian-ze dei propri cari sullo sfondo della grande storia. Metaromanzo, storia d’amore, resoconto di viag-gio, riflessione sulla fotografia o tutte queste cose insieme, in Pamjati pamjati, il fenomeno della memoria si sovrappone ad altri temi, diventa ampio e molteplice: la memoria e la storia, la memoria e la catastrofe, la memoria e il suono, la memoria e gli oggetti, la memoria e l’etica. L’autrice porta alla luce i suoi morti e sono loro che la aiuteranno a cambiare il suo linguaggio.
A scrivere quello che è in sostanza un necrologio alla memoria la aiuta uno degli autori che le sono più vicini, W. G. Sebald, i cui libri, a prescindere dal tema trattato, sono sempre scritti dalla parte dei morti. Partendo dall’idea di scrivere la storia della propria famiglia ebrea – russa – europea, composta da medici, architetti, bibliotecari, ragionieri e ingegneri che aspirano a condurre una vita tranquilla in un mondo violento e incivile, l’autrice tocca il problema della memoria del passato, dei piccoli e grandi avvenimenti del XX secolo, e di come essi possano sopravvivere nella memoria personale del singolo. L’ebraismo costituisce uno dei punti focali della narrazione, segna il destino dei personaggi anche se non tragicamente, perché quasi tutti riescono a sfuggire all’olocausto, al terrore staliniano. Non di meno la fragilità e l’insignificanza delle loro vite appaiono vulnerabili.
Diviso in tre parti, la prima di nove capitoli, la seconda di dieci e la terza di quattro, il libro mescola nelle prime due parti lettere di parenti, documenti, che conservano le loro voci. Intorno alle lettere, ci sono fotografie, oggetti quotidiani che l’autrice non si limita a descrivere al lettore, bensì mostra, trascrive, ingloba nel suo testo, perché ha sfiducia nelle immagini, nei selfi che pretendono di ripro-durre la vita senza riuscirci. La definizione “romance”, romanza, che leggiamo in copertina caratte-rizza perfettamente l’opera, tanto che alla fine Stepanova confessa a se stessa di aver dedicato il suo tempo non ad un’occupazione rispettabile, a una ricerca o a uno studio, bensì a un romanzo familia-re “freudiano”, a una “romanza sentimentale sul passato”.The Dust of Memory. A few remarks on M. Stepanova’s book Pamjati pamjati
The present article deals with M. Stepanova’s book Post-Memory published in 2017 with great suc-cess, a book which has no analogues not only in Russian but also in world literature. A meta-novel, a great literary reconstruction, which has created a whole new genre and sounds the relation be-tween memory, time, and history.
Stepanova had the idea of this writing at ten or eleven years. The project started as an exploration of how our memory works. When she started working on the book, she meant linear narrative —a sto-ry of search and finding. Go there, go here, find out, describe. It seemed her then that a large part of the hiatus and failures that have been family history will be easy to fill in accurate knowledge; but it turned out that the story is mostly from hiatus and is neither to find nor to make up for really any-thing. Only when she began to disassemble the family archive, she found, among other things, let-ters, photos, horoscopes, childhood souvenirs, things that the author examines in astonishment. Who were these people who travelled all throughout Europe yet lived in Russia? Who did their best to remain anonymous and who made little effort to make history seem interesting? But it is precise-ly the unspectacular nature of the find which turns the author’s research in the Russian context into something new: «Everyone else had a family made up of people participating in history; mine was made up only of their tenants». Destined to become victims of persecution and repression, they all still managed to survive the 20th century. How was that possible? This is the question and point of departure for Marija Stepanova’s first great work of prose.
In dialogue with W.G. Sebald, imbued with a passion for thought and a wonderfully soft, poetic voice derived from sensual as well as intellectual observations, Stepanova assembles her found pieces into a panorama of an entire age. At its heart lives a large family of doctors, architects, librar-ians, accountants, and engineers, unheroic individuals who did not attach themselves to any great project but who in uncivilized, violent times attempted to live quiet, civilized lives
Borovichskiy Uyezd of Novgorod Governorate in Studies of First Russian Soil Scientists and Materials of General Land Surveying
No full textThe results of comparative analysis research of the first Russian soil scientists, held in Borovichskiy uyezd of Novgorod governorate in the late 19th century, with the materials of General land surveying of the late 18th century are presented. The relevance of the work is determined by insufficient knowledge of the topic and by the parameters of fertility of the land changing during the centuries. The author reveals the peculiarities of soil research in this region since the late 19th century, focuses on typical features of their description given according to the scientific achievements of that time. Special attention is paid to the comparison of the results of field researches of soil scientists in the area of certain villages with an electronic database compiled by the author, that characterizes the soil in the materials of the general land surveying. It is proved that the ranking of soil types by soil scientists in the late 19th century coincides with information about soil in the materials ofgeneral land surveying of the late 18th century. The wide use of soil descriptions in the subsequent rural studies is highlighted. Scientific novelty of the work consists in the fact that it for the first time systematized, summarized and mapped field survey results of the first Russian soil scientists and general land surveying by the example of Borovichskiy uyezd of Novgorod governorate
On the History of Novgorod Land
No full textThe review of the article: Stepanova L. G. Structural and demographic theory and history of the North West of Russia of the XVI century // Russian history. - 2011. -№ 4. - Page 73-87.Рецензия на статью: Степанова Л. Г. Структурно-демографическая теория и история Северо-Запада России XVI века / Л. Г. Степанова // Рос. история. - 2011. -№ 4. - С. 73-87
A study on L-threonine and L-serine uptake in Escherichia coli K-12
No full textIn the current study, we report the identification and characterization of the yifK gene product as a novel amino acid carrier in E. coli K-12 cells. Both phenotypic and biochemical analyses showed that YifK acts as a permease specific to L-threonine and, to a lesser extent, L-serine. An assay of the effect of uncouplers and composition of the reaction medium on the transport activity indicates that YifK utilizes a proton motive force to energize substrate uptake. To identify the remaining threonine carriers, we screened a genomic library prepared from the yifK-mutant strain and found that brnQ acts as a multicopy suppressor of the threonine transport defect caused by yifK disruption. Our results indicate that BrnQ is directly involved in threonine uptake as a low-affinity but high-flux transporter, which forms the main entry point when the threonine concentration in the external environment reaches a toxic level. By abolishing YifK and BrnQ activity, we unmasked and quantified the threonine transport activity of the LIV-I branched chain amino acid transport system and demonstrated that LIV-I contributes significantly to total threonine uptake. However, this contribution is likely smaller than that of YifK. We also observed the serine transport activity of LIV-I, which was much lower compared with that of the dedicated SdaC carrier, indicating that LIV-I plays a minor role in the serine uptake. Overall, these findings allow us to propose a comprehensive model of the threonine/serine uptake subsystem in E. coli cells
Utopian clothing: the futurist and constructivist overalls in the early 1920s’
No full text‘Can fashion start from zero?’ is a question that, as observed by theorists, historians and curators, ultimately haunts those radical sartorial projects embodying a ‘new’ vision of the world. In the experimental overalls designed at the beginning of the twentieth century by Thayaht in Italy, and Stepanova, Rodchenko and Popova in Russia, it is possible to follow and progressively unfold the aspiration to a total renovation and re-organization of life. The differences between the artistic contexts to which these artists belong – Italian Futurism and Russian Constructivism - have often induced critics to separately discuss their sartorial proposals, overlooking their points of convergence. Within this article, the overalls by Thayaht and the Russian Constructivists are instead analysed in relation to each other, as agents of change, or rather as instances of a ‘utilitarian outrage’ (Davis, 1992). In examining their biographies, the article questions the newness of these creations, the rhetoric of the ‘new’ that accompanied them, and their status as ‘anti-fashion’ projects. Combining material culture with cultural history, it argues that their iconoclasm and utopian potential, resides precisely in their proposing a rationalization of clothing, and in ‘questioning the very fashion project itself’ (Wilson, 2003), in both its symbolic and tangible presence. Finally, on the basis of archival research and interviews conducted at the Thayaht-RAM Archive, Florence, the characterization of Thayaht’s tuta as a Futurist creation, which has often been taken for granted, is reconsidered and problematized further
German Colonists on River Milky Waters of Taurida Province in First Third of 19th Century
No full textThe information from the materials of the General Land Survey of the Russian Empire in the first third of the 19th century about the German colonies based on the territory of the Melitopol district of the Tauride province is analyzed in the article. The relevance of the study is due to the great interest in the resettlement policy pursued by the Russian Empire in this region at the end of the 18th — the first third of the 19th centuries, as well as in the processes of settlement and development of new territories and the participation of foreign colonists in them. The novelty of the study lies in the involvement of previously unused “Economic notes on the plans of the General survey, field notes of land surveyors and controversial cases” as sources on the history of German colonists. Based on them, the author studies the features of the economic structure of the settlements of German colonists, the structure of their land. Particular attention is paid to the dispute between the Mennonites and the Dukhobors about the boundaries of possessions, during which the true location of the Molochnaya River bed was clarified. The consideration of the case shows that disputes over the boundaries of land plots were of a fundamental nature and reached the highest authorities. Until the 1830s, there were still unresolved issues related to land management and surveying of the German-speaking colonies
Study of dynamics of accumulation of tanning substances in raw materials of plants of the genus Geum L. flora of Ukraine
No full textRecently, in the pharmaceutical market, much attention is paid to medicinal products obtained from medicinal plant raw materials. Of great current interest is a search for new plants with sufficient domestic raw material base in order to introduce them into medical practice as well as to develop herbal preparations.
Promising sources of medicinal plant raw materials for the development of herbal preparations with antimicrobial, astringent, anti-inflammatory and hemostatic properties are species of Gravilate genus (Geum L.), which accumulate a wide range of biologically active substances, including polyphenols.
Plants of Geum L. genus (Gravilate) belong to Rosoideae (Rosaceae family). Two species, Geum urbanum L. (Wood Avens) and G. montanum L. (Mountain Gravilate), grow in Ukraine, and are used in folk medicine as anti-inflammatory, astringent, hemostatic and wound healing agents.
A significant amount of research articles devoted to the chemical composition and use of Geum L. species indicate the prospects for the study of domestic raw materials of Ukrainian flora.
An aimof the present study was to quantify tannins and oxidizable phenolic compounds in the vegetative organs of G. urbanum L. and G. montanum L.
The objects of the study were herb and rhizomes with roots of G. urbanum L. and G. montanum L. harvested in Sumskaya and Ivano-Frankivsk regions in April–September 2020–2021. The content of oxidizable phenolic compounds and tannins was determined by permanganometric titration and complexometric titration. The results obtained were in the range from 8.30% to 28.10%, and 2.66% to 14.35%, respectively.
As a result, in herb and rhizomes with roots of G. urbanum L. and G. montanum L., oxidizable phenolic compounds and tannins were quantified using permanganometric titration and complexometric titration. Taking into account the high content of tannins in vegetative organs of the studied Geum species, these species can be classified as tannin-bearing plant materials. In G. urbanum L. herb, the maximum content of tannins was determined at flowering stage, while in rhizomes with roots – at the end of the vegetative stage (in autumn). Given the data obtained, the abovementioned vegetative stages are set as optimal for the procurement of G. urbanum L. plant materials
Transcriptomic signature of the SHATTERPROOF2 expression domain reveals the meristematic nature of arabidopsis gynoecial medial domain
No full textPlant meristems, like animal stem cell niches, maintain a pool of multipotent, undifferentiated cells that divide and differentiate to give rise to organs. In Arabidopsis (Arabidopsis thaliana), the carpel margin meristem is a vital meristematic structure that generates ovules from the medial domain of the gynoecium, the female floral reproductive structure. The molecular mechanisms that specify this meristematic region and regulate its organogenic potential are poorly understood. Here, we present a novel approach to analyze the transcriptional signature of the medial domain of the Arabidopsis gynoecium, highlighting the developmental stages that immediately proceed ovule initiation, the earliest stages of seed development. Using a floral synchronization system and a SHATTERPROOF2 (SHP2) domain-specific reporter, paired with FACS and RNA sequencing, we assayed the transcriptome of the gynoecial medial domain with temporal and spatial precision. This analysis reveals a set of genes that are differentially expressed within the SHP2 expression domain, including genes that have been shown previously to function during the development of medial domain-derived structures, including the ovules, thus validating our approach. Global analyses of the transcriptomic data set indicate a similarity of the pSHP2-expressing cell population to previously characterized meristematic domains, further supporting the meristematic nature of this gynoecial tissue. Our method identifies additional genes including novel isoforms, cis-natural antisense transcripts, and a previously unrecognized member of the REPRODUCTIVE MERISTEM family of transcriptional regulators that are potential novel regulators of medial domain development. This data set provides genome-wide transcriptional insight into the development of the carpel margin meristem in Arabidopsis
GABI-Kat SimpleSearch: new features of the Arabidopsis thaliana T-DNA mutant database
No full textKleinbölting N, Huep G, Klotgen A, Viehöver P, Weisshaar B. GABI-Kat SimpleSearch: new features of the Arabidopsis thaliana T-DNA mutant database. Nucleic Acids Research. 2012;40(D1):D1211-D1215.T-DNA insertion mutants are very valuable for reverse genetics in Arabidopsis thaliana. Several projects have generated large sequence-indexed collections of T-DNA insertion lines, of which GABI-Kat is the second largest resource worldwide. User access to the collection and its Flanking Sequence Tags (FSTs) is provided by the front end SimpleSearch (http://www.GABI-Kat.de). Several significant improvements have been implemented recently. The database now relies on the TAIRv10 genome sequence and annotation dataset. All FSTs have been newly mapped using an optimized procedure that leads to improved accuracy of insertion site predictions. A fraction of the collection with weak FST yield was re-analysed by generating new FSTs. Along with newly found predictions for older sequences about 20 000 new FSTs were included in the database. Information about groups of FSTs pointing to the same insertion site that is found in several lines but is real only in a single line are included, and many problematic FST-to-line links have been corrected using new wet-lab data. SimpleSearch currently contains data from ∼71 000 lines with predicted insertions covering 62.5% of the 27 206 nuclear protein coding genes, and offers insertion allele-specific data from 9545 confirmed lines that are available from the Nottingham Arabidopsis Stock Centre
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