926 resultados para 1720-1830


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Digital image

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The Eva Stroh Family Collection provides material on the lives and family history of members of the Sondheimer and Stroh families. The collection consists of numerous photos and several photo albums, family trees, official documents, correspondence, published articles and clippings and some notes, a notebook documenting cultural activities and some daily calendars.

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Tarkastelen pro gradu -tutkielmassani naiskysymystä Seitsemännen päivän adventtikirkon oppiäiti Ellen Whiten (1827 1915) terveysopetuksessa. White tunnetaan ennen kaikkea näyistään, joiden välityksellä hän koki saavansa Jumalalta hyvinvointiin liittyviä ohjeita. White kirjoitti näkyjensä innoittama terveysoppaita ja julisti pääasiassa Yhdysvalloissa yli 70 vuotta. Päälähteenäni ovat kaksi Whiten omaelämäkertaa vuosilta 1880 ja 1915 sekä 83 artikkelia, jotka hän julkaisi adventistien johtavassa terveyslehdessä, Health Reformerissa, vuosina 1866 1878. Tutkimuskysymykseni ovat, miksi White osoitti lähes kaiken terveyteen liittyvän opetuksensa naisille ja miten hän ymmärsi terveyden osana naisen roolia ja tehtäviä. Tulkintani mukaan White julisti naisille, sillä hän uskoi, että naisen asema oli selkeytettävä. Yhdysvallat teollistui ja kaupungistui nopeasti 1800-luvulla, mikä aiheutti naisille taloudellisia, sosiaalisia ja terveyteen liittyviä ongelmia. Lisäksi toinen suuri herätys (1800 1830) synnytti keskustelua naisen roolista. Monet kirkot antoivat naisille luvan esimerkiksi saarnaamiseen, mutta Yhdysvalloissa vahvistui samaan aikaan myös käsitys naisesta kodin uskonnollisena johtajana. Ymmärrän, että Whiten mukaan ratkaisu naisen sekavaan asemaan oli terveys. Uskon, että Whiten mukaan nainen pystyi ottamaan oman paikkansa yhteiskunnassa, mikäli hän pysyi terveenä ja oppi tuntemaan terveyden periaatteet. Toisaalta White sai vaikutteita naisten yhteiskunnallisten oikeuksien puolustajilta. He ajattelivat, että vain koulutettu ja terve nainen kykeni vapautumaan avioliitosta. Toisaalta White oli naisasianaisia maltillisempi. Hän ymmärsi, että vain terve ja terveyskoulutuksen saanut nainen saattoi olla hyvä äiti. Ellen White osallistui terveysopetuksellaan keskusteluun myös naisen uskonnollisesta roolista. White oli itse kiertelevä terveyssaarnaaja. Silti hän ymmärsi, että muiden naisten kutsumus oli olla terve ja koulutettu äiti. White korosti äitien pyhyyttä luultavasti siksi, että hän pyrki turvaamaan oman auktoriteettiasemansa Adventtikirkossa. White myös luultavasti ymmärsi roolinsa ja tehtävänsä poikkeuksellisiksi ja arvosti vilpittömästi äitiyttä. Whiten mukaan äidin tehtävä oli kasvattaa terveitä ja moraalisia kansalaisia. Tehtävän arvon hän perusteli aikansa tieteellisillä teorioilla. White korosti luonnontieteilijä Charles Darwinin (1809 1882) evoluutioteorian mukaisesti, että äidin velvollisuus oli siirtää lapsilleen hyvä terveys. Käsityksensä terveyden ja moraalin suhteesta hän selitti frenologialla, jonka mukaan ihmisen elämäntavat vaikuttivat hänen luonteenpiirteisiinsä. White oli myös todennäköisesti kiinnostunut sosiaalitieteilijä Herbert Spencerin (1820 1903) ajatuksista, joiden mukaan kansalaisten kehittyessä myös yhteiskunta jalostui yhä paremmaksi. Vaikka White perusteli opetustaan modernilla tieteellä, hän oli ennen kaikkea uskonnollinen julistaja. Hän kuului 1840-luvulla herätyssaarnaaja William Millerin (1782 1849) liikkeeseen, jonka jäsenet uskoivat, että Jumala tuhoaa Yhdysvallat viimeisellä tuomiolla, mikäli kansan moraalin tila ei nopeasti kohene. Millerin liikkeen painotukset säilyivät Adventtikirkossa, joka perustettiin vuonna 1863. Siten White ymmärsi, ettei äiti ollut vastuussa vain perheensä ja kansansa maallisesta hyvinvoinnista vaan myös heidän pelastuksestaan. Whiten käsitys äidistä on mielestäni ristiriitainen. White antoi äideille paljon valtaa, mutta myös suuren vastuun. Hän korosti äitien arvokkuutta, mutta toisaalta he eivät olleet hänen mukaansa korvaamattomia. White ei myöskään huomioinut naisia, jotka eivät olleet äitejä.

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The electron temperature structure in a weakly ionized plasma is studied allowing the degree of ionization to vary across the shock wave. The values of the electron temperature and the downstream equilibrium temperature obtained with variable ionization are less than those for frozen ionization. The electron temperature rises sharply behind the shock for variable ionization while a gradual increase is predicted by frozen ionization.

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The reactivity of Grignard reagents towards imines in the presence of catalytic and stoichiometric amounts of titanium alkoxides is reported.Alkylation, reduction, and coupling of imines take place. Whereas reductive coupling is the major reaction in stoichiometric reactions, alkylation is favored in catalytic reactions. Mechanistic studies clearly indicate that intermediates involved in the two reactions are different. Catalytic reactions involve a metal alkyl complex. This has been confirmed by reactions of deuterium-labeled substrates and different alkylating agents. Under the stoichiometric conditions, however, titanium olefin complexes are formed through reductive elimination, probably through a multinuclear intermediate.

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The subject of the present research is historical lighthouse and maritime pilot stations in Finland. If one thinks of these now-abandoned sites as an empty stage, the dissertation aims to recreate the drama that once played out there. The research comprises three main themes. The first, the family problematic, focuses on the relationship between the family members concerned and the public service positions held, as well as the islands on which these people were stationed. The role of the male actors becomes apparent through an examination of the job descriptions of pilots and lighthouse keepers, but the role of the wives appears more problematic: running a household and the insularity of the community came with their own challenges, and the husbands were away for much of the time. In this context the children emerge as crucial. What was their role in the family of a public official? What were the effects of having to move to the mainland for school? The second theme is the station community. A socioecological examination is undertaken which defines the islands as plots allowing the researcher to study the social behaviours of the isolated communities in question. The development of this theme is based on interpretations of interviews revealing starkly opposed views on the existing neighbourly relations. The premise is that social friction is inevitable among people living within close proximity of each other, and the study proceeds to become an analysis that seeks to uncover the sociocultural strategies designed to control the risks of communal living either by creating distance between neighbours or by enhancing their mutual ties. In connection with this, the question of why some neighbourhoods were open and cooperative while others were restrained and quarrelsome is addressed. Finally, the third main theme discusses the changes in piloting and lighthouse keeping that took place increasingly numerous towards the end of the 20th century. How did individuals react to the central management s technocratic strivings and rationalisations, such as the automation of lighthouses and the intense downsizing of the network of pilot stations? How was piloting, previously very comprehensive work, splintered into specialisations, and how did the entire occupation of lighthouse keeping lose its status before completely disappearing, as the new technology took over?

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The dissertation discusses the history of the book and the Enlightenment in Finland by studying the reception and diffusion of eighteenth-century books and by approaching the discourse on the Enlightenment in Finnish source material. The methods used relate to historian Robert Darnton s studies on eighteenth-century print culture and his analyses of the relations between print culture and society. The study is based on diverse eighteenth-century sources: books, pamphlets and dissertations, bibliographies, book auction protocols, parliamentary documents, estate inventory deeds, newspapers, letters, lectures, memoirs and commonplace books. By the end of the eighteenth century, book production had increased and secular literature had begun to challenge the dominance of religious literature. The books of the Enlightenment belonged to the new literature that found its way into Finnish book collections previously dominated by religious literature. Enlightenment literature is not a set selection of books but rather diverse works from different genres. Thus the study introduces a variety of printed material, from philosophical tracts and textbooks to novels and pornography. In the case of books of the Enlightenment, the works of French Voltaire and German Christian Wolff were among the most widely read and circulated books in Finland. First and foremost, the Enlightenment was an era of intellectual debate. These debates carried strong criticism of the prevailing systems of thought. Enlightenment ideas challenged the Lutheran society of Sweden and especially its sense of conformity. Contemporaries saw many of the books of the Enlightenment as vessels of new ideas and criticism. Furthermore, this kind of print material was interpreted as being dangerous for uneducated readers. Belonging to a certain estate and social class had a major impact on individuals reading habits and their acquisition of books. One specific social group stands out in the Finnish source material: the officers at the Sveaborg naval fortress possessed and distributed Enlightenment books more than the members of any other social class. Other essential social groups were scholars, the nobility and the clergy, who took part in debates concerning the ideas and benefits of the Enlightenment. In the Finnish debates at the time, the concept of Enlightenment involved three primary notions. Firstly, it referred to the French philosophers, les philosophes, and to their works as well as to the social changes that took place during the French revolution. It also carried the idea of philosophical light or the light of reason, in a sense similar to Immanuel Kant s writings. Most importantly, it referred to a belief in progress and to a trust in true knowledge that would supercede ignorance and fanaticism. Hence, it is impossible to speak about the Enlightenment era in the Swedish realm without such concepts as reason, benefit or progress. These concepts likewise marked the books of the Enlightenment in eighteenth-century Finland.

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Insulator becomes wet partially or completely, and the pollution layer on it becomes conductive, when collecting pollutants for an extended period during dew, light rain, mist, fog or snow melting. Heavy rain is a complicated factor that it may wash away the pollution layer without initiating other stages of breakdown or it may bridge the gaps between sheds to promote flashover. The insulator with a conducting pollution layer being energized, can cause a surface leakage current to flow (also temperature-rise). As the surface conductivity is non-uniform, the conducting pollution layer becomes broken by dry bands (at spots of high current density), interrupting the flow of leakage current. Voltage across insulator gets concentrated across dry bands, and causes high electric stress and breakdown (dry band arcing). If the resistance of the insulator surface is sufficiently low, the dry band arcs can be propagated to bridge the terminals causing flashover. The present paper concerns the evaluation of the temperature distribution along the surface of an energized artificially polluted insulator string.

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High molecular weight polyaniline (PANI) was synthesized by a combined procedure incorporating various synthesis methods. Temperature and open circuit potential of the reaction mixture were collected to monitor the reaction progress. The polymer is characterized by various techniques including gel permeation chromatography, dynamic light scattering, infrared spectroscopy, solid-state nuclear magnetic resonance, and differential scanning calorimetry for elucidating the molecular architecture obtained by this method. As-synthesized PANI was found to possess high molecular weight, reduced branching, reduced cross-linking, and to predominantly consist of linear polymer chains. This polymer was also found to be more stable in solution form. JV characteristics of as-synthesized PANI films indicate a high current density which is due to increased free pathways and less traps for the charge transport to occur in PANI films. POLYM. ENG. SCI., 2012. (C) 2012 Society of Plastics Engineers

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The RAD51 paralogs XRCC3 and RAD51C have been implicated in homologous recombination (HR) and DNA damage responses. However, the molecular mechanism(s) by which these paralogs regulate HR and DNA damage signaling remains obscure. Here, we show that an SQ motif serine 225 in XRCC3 is phosphorylated by ATR kinase in an ATM signaling pathway. We find that RAD51C but not XRCC2 is essential for XRCC3 phosphorylation, and this modification follows end resection and is specific to S and G(2) phases. XRCC3 phosphorylation is required for chromatin loading of RAD51 and HR-mediated repair of double-strand breaks (DSBs). Notably, in response to DSBs, XRCC3 participates in the intra-S-phase checkpoint following its phosphorylation and in the G(2)/M checkpoint independently of its phosphorylation. Strikingly, we find that XRCC3 distinctly regulates recovery of stalled and collapsed replication forks such that phosphorylation is required for the HR-mediated recovery of collapsed replication forks but is dispensable for the restart of stalled replication forks. Together, these findings suggest that XRCC3 is a new player in the ATM/ATR-induced DNA damage responses to control checkpoint and HR-mediated repair.

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Background: Cotton leaf curl Kokhran Virus-Dabawali (CLCuKV-Dab) is a monopartite begomovirus encoding two proteins V1 and V2 in the virion sense and four proteins Cl, C2, C3 and C4 in the complementary sense. The C4 protein of monopartite begomoviruses has been implicated to play a role in symptom determination and virus movement. The present work aims at the biochemical characterization of this protein. Methods: The C4 protein of CLCuKV-Dab was purified in fusion with GST and tested for the ability to hydrolyze ATP and other phosphate containing compounds. ATPase activity was assayed by using radiolabeled gamma-32P]-ATP and separating the product of reaction by thin layer chromatography. The hydrolysis of other compounds was monitored by the formation of a blue colored phosphomolybdate complex which was estimated by measuring the absorbance at 655 nm. Results: The purified GST-C4 protein exhibited metal ion dependent ATPase and inorganic pyrophosphatase activities. Deletion of a sequence resembling the catalytic motif present in phosphotyrosine phosphatases resulted in 70% reduction in both the activities. Mutational analysis suggested arginine 13 to be catalytically important for the ATPase and cysteine 8 for the pyrophosphatase activity of GST-C4. Interaction of V2 with GST-C4 resulted in an increase in both the enzymatic activities of GST-C4. Conclusions: The residues important for the enzymatic activities of GST-C4 are present in a motif different from the classical Walker motifs and the non-classical ATP binding motifs reported so far. General significance: The C4 protein of CLCuKV-Dab, a putative natively unfolded protein, exhibits enzymatic activities.

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A computational study of the interaction half-sandwich metal fragments (metal=Re/W, electron count=d(6)), containing linear nitrosyl (NO+), carbon monoxide (CO), trifluorophosphine (PF3), N-heterocyclic carbene (NHC) ligands with alkanes are conducted using density functional theory employing the hybrid meta-GGA functional (M06). Electron deficiency on the metal increases with the ligand in the order NHC < CO < PF3 < NO+. Electron-withdrawing ligands like NO+ lead to more stable alkane complexes than NHC, a strong electron donor. Energy decomposition analysis shows that stabilization is due to orbital interaction involving charge transfer from the alkane to the metal. Reactivity and dynamics of the alkane fragment are facilitated by electron donors on the metal. These results match most of the experimental results known for CO and PF3 complexes. The study suggests activation of alkane in metal complexes to be facile with strong donor ligands like NHC. (C) 2015 Wiley Periodicals, Inc.