169,594 research outputs found
Selective catalytic reduction of N2O with CH4 on Ni-MOR: A comparison with Co-MOR and Fe-MOR catalysts
No full textThe selective catalytic reduction of N2O with CH4 in the presence of excess O-2 (CH4-SCRN2O) and CH4 + O-2 reaction were studied on Ni-MOR, Co-MOR and Fe-MOR, prepared from H-MOR or Na-MOR, by ionexchange or CVD. FTIR showed that transition metal ions (tmi) were well dispersed, mainly isolated with at least two coordinative vacancies. For CH4-SCRN2O, irrespective of Bronsted acid site and Na* amount, catalysts were active in the order Fe-MOR >Ni-MOR > Co-MOR. Using a methane-poor mixture, on all samples CH4-SCRN2O consisted of two nearly independent reactions: CH4 +N2O and CH4+ O-2. Using a methanerich mixture, CH4-SCRN2O consisted of a CH4+ N2O + O-2 reaction, whose stoichiometric ratios depended on the tmi. Whereas on Ni-MOR methane combustion occurred as side reaction, on Co-MOR and Fe-MOR no side reactions occurred. Accordingly, for CH4 + O-2 Co-MOR and Fe-MOR were poorly active, whereas Ni-MOR were highly active. We conclude that in CH4-SCRN2O a monoatomic oxygen form activates methane on Co-MOR and FeMOR catalysts, whereas both a monoatomic oxygen form and a molecular oxygen form activate methane on Ni-MOR. Being active for the CH4-SCRN2O and CH4-SCRNOx and forming CO only in traces, Ni-MOR are promising catalysts for the simultaneous SCR of N2O and NOx using CH4 as reducing agent. (C) 2013 Elsevier B.V. All rights reserved
An investigation into the recent vegetation history of Great Wood, near Eggleston Co. Durham using fine resolution pollen analysis of Mor humus and relevant historical evidence.
No full textThis study investigated the recent vegetation history of an ancient woodland, Great Wood, near Eggleston Co. Durham which has been part of the lands of Eggleston Hall since at least 1614. Mor humus was extracted from two sites within the woodland canopy and consecutive 1cm samples were analysed from each sediment. The reasons for this fine resolution sampling was firstly, because the soil profiles were only between 14-20cms and only represented a time scale of a few hundred years, and secondly to provide fine temporal resolution to correspond with the fine spatial resolution obtainable under a closed canopy. Sediment analysis was undertaken to investigate the stratification of the soil in order to identify signs of disturbance. Mor # 1 proved to be highly stratified, whereas as mor # 2 was less stratified, possibly disturbed and had signs of charcoal at the lowest levels. It was therefore concluded that mor # 2 only represented part of the time scale that mor # 1 illustrated, as it was a more recently formed humus, the earlier part having been burnt away. An absolute time scale was not used but a relative time scale was assigned using documentary and anecdotal historical evidence. This took into account the development of the nearby village and the social and economic changes of the region, and also the association of the woodland with Eggleston Hall and the consequent utilisation of the woodland for timber and recreational purposes. The pollen record of mor # 1 was thought to represent the vegetation history from approximately 1750 to the present time, whereas the pollen record of mor # 2 shows the vegetation history from the late nineteenth century onwards. This time scale was deduced from the following:1. There were signs of a more open canopy, due to a greater proportion of herb pollen to tree pollen, and evidence of pollen representing a more regional source area such as Triticum and possibly Calluna. This was thought to represent 1750- 1820 when tillage increased in importance and there were reports of arable activity in the adjoining townfield probably causing a reduction in grazing pressure in the wood and allowing regeneration. This was promoted by the Enclosure Act in 1785, an attempt to establish mineral rights and to make the dales more commercially viable for agriculture and was a result of marginal land being used for tillage during the Napoleonic wars. However, signs of succession and canopy closure began to develop and there were also some signs of management deduced from Fagus pollen appearing and documentary evidence of the path construction through the woods.2. The herb pollen to tree pollen ratio began to fall and canopy closure continued but was not thought to be complete, due to selective management and extraction of timber. The disappearance of Triticum was believed to be due to a change in agricultural trends. Fagus pollen which was quite significant, disappeared abruptly due to the trees in the vicinity of the site being removed.3. Complete canopy closure shown by a consistently high tree pollen to herb pollen ratio with Quercus dominating, arose when management of the wood was abandoned in the 1920's.The fine resolution obtained, both temporally and spatially, demonstrated that mor humus was a useful medium for pollen analysis and with consideration of the underlying principles and mechanisms, meaningful interpretation of the pollen record was possible. Problems encountered with extraction of samples and during processing were discussed
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
As moedas locais beneficiam as comunidades? : o caso do MOR
No full textA presente dissertação enquadra-se no âmbito das iniciativas de inovação social, que surgem no sentido de colmatar e/ou mitigar desequilíbrios económicos, sociais e ambientais, que emergem da expansão da racionalidade económica. Dos diversos instrumentos de inovação social, elegeu-se como objeto de estudo as moedas locais, em particular, a moeda MOR criada pela associação A.Mor no concelho de Montemor-o-Novo. Pretendeu-se averiguar se existiam, ou não, vantagens para o concelho de Montemor-o-Novo com a implementação desta moeda, assim como verificar se a sua utilização desencadeou algum processo de transformação social na comunidade onde circula. Caso tal se verificasse, almejava-se compreender em que moldes tal transformação se processa e contribuir para o conhecimento e divulgação da realidade das moedas locais em Portugal. Adotou-se, do ponto de vista metodológico, a abordagem de investigação qualitativa, utilizando-se como técnicas de recolha de dados a análise documental, a observação direta e a entrevista semiestruturada. Os resultados obtidos demonstram que as vantagens da moeda local MOR são, atualmente, pouco expressivas. Trata-se de uma iniciativa recente, com pouca adesão da população e com poucos recursos e meios de divulgação. A verificar-se a continuidade da iniciativa e o concomitante aumento da adesão da população, espera-se uma maior consciencialização para o consumo local, o aumento do comércio, economia e desenvolvimento locais e, ainda, a construção de uma rede de apoio mútuo local. Este estudo revela também que ainda não há efeitos visíveis da utilização desta moeda que permitam falar em transformação social.This dissertation falls within the scope of social innovation initiatives, initiatives that arise to adjust and/or mitigate economic, social and environmental imbalances emerging from economic rationality. Of the several instruments of social innovation, the author chose, as the object of this study, the local currencies, in particular the MOR currency, created by the A.Mor association in the municipality of Montemor-o-Novo. The intention was to investigate the advantages of implementing the MOR to the municipality of Montemor-o-Novo, to determine if a transformation in the local community is taking place, and if so, to understand how it happens, and finally, to contribute to the knowledge and dissemination of the reality of local currencies in Portugal. From a methodological point of view, a qualitative research approach was adopted, using, as data collection techniques, document analysis, direct observation, and semi-structured interviews. The results show that the advantages of the local currency MOR are currently not very expressive. It is a recent initiative, with little adhesion from the population and few resources and means of dissemination. If the initiative continues and the population adheres to it, it is expected to raise awareness of local consumption, increase local trade, economy, and development, and build a local network of mutual support. This study also reveals that there are still no visible effects of the use of this currency that allow us to talk about social transformation
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
O Esquema construcional [[X]N-[mor]A]N na história da língua portuguesa (The constructional scheme [[X]N-[mor]A] N in the history of Portuguese)
No full textThis paper aims at developing an analysis of constructions [[X]N-[mor]A]N in the history of the Portuguese language, following Construction Grammar’s framework as it is approached in Construction Morphology, by Booij (2010), Gonçalves (2016), Soledade (2013) and Tavares da Silva (2019), and in Usage-Based Functional Linguistics, by Traugott and Trousdale (2013), Oliveira (2017) and Rosário and Lopes (2019). In the constructive approach to language, it is assumed that a construct must be instantiated by a scheme that pairs form, function and meaning. In this sense, we intend to analyze the semantic, lexical and morphosyntactic aspects of [[X]N-[mor]A]N compounds. The survey conducted by Santos (2009) for the nominal compounds in archaic Portuguese (13th-16th century) was used, containing forms such as alcaide-mor, alferez-mor, beesteiro-mor and camareira-mor, altar-mor and capela-moor, among others. For contemporary Portuguese, research based on corpora, available on the Linguateca platform and on the Twitter social network, was conducted. The following examples were found: ladrão-mor, sapatão-mor, pessimista-mor, metaleiro-mor, gastador-mor, cínico-mor, pinguim-mor and breguice-mor.Neste trabalho, pretende-se fazer uma análise das construções [[X]N-[mor]A]N na história da língua portuguesa, seguindo os pressupostos da Gramática de Construções, como abordada na Morfologia Construcional, pensada por Booij (2010), Gonçalves (2016), Soledade (2013) e Tavares da Silva (2019), e na Linguística Funcional Centrada no Uso, pensada por Traugott e Trousdale (2013), Oliveira (2017) e Rosário e Lopes (2019). Na abordagem construcional da linguagem, assume-se que uma construção deve ser instanciada por um esquema que pareia forma, função e significado. Nesse sentido, intenta-se analisar os aspectos semânticos, lexicais e morfossintáticos dos compostos [[X]N-[mor]A]N. Usou-se o levantamento realizado por Santos (2009) para os compostos nominais no português arcaico (séc. XIII-XVI), no qual figuram alcaide-mor, alferez-mor, beesteiro-mor e camareira-mor, altar-mor e capela-moor, entre outros. Para o português contemporâneo, procedeu-se a pesquisas em corpus disponibilizado na plataforma Linguateca e na rede social Twitter. Encontraram-se os seguintes exemplos: ladrão-mor, sapatão-mor, pessimista-mor, metaleiro-mor, gastador-mor, cínico-mor, pinguim-mor e breguice-mor.En este trabajo, se pretende hacer un análisis de las construcciones [[X]N-[mor]A]N en la historia de la lengua portuguesa, siguiendo los supuestos de la Gramática de Construcciones, como se aborda en la Morfología Construccional, pensada por Booij (2010), Gonçalves (2016), Soledade (2013) y Tavares da Silva (2019), y en la Lingüística Funcional Centrada en el Uso, pensada por Traugott y Trousdale (2013), Oliveira (2017) y Rosario y Lopes (2019). En el enfoque constructivo del lenguaje, se asume que una construcción debe ser instanciada por un esquema que coincida con la forma, la función y el significado. En este sentido, se pretende analizar los aspectos semánticos, léxicos y morfosintácticos de los compuestos [[X]N-[mor]A]N. La encuesta realizada por Santos (2009) se utilizó para los compuestos nominales en portugués arcaico (siglos XIII-XVI), que incluyen al alcaide-mor, alferez-mor, beesteiro-mor y camareira-mor, altar-mor y capela-moor, entre otros. Para el portugués contemporáneo, se procedió a investigaciones en corpus disponible en la plataforma Linguateca y en la red social Twitter. Se encontraron los siguientes ejemplos: ladrão-mor, sapatão-mor, pessimista-mor, metaleiro-mor, gastador-mor, cínico-mor, pinguim-mor y breguice-mor.
 
Larry O. Spencer, Conference Author Presentation
No full textGen. Larry O. Spencer, USAF (Ret.), author of Dark Horse: A Journey from the Horseshoe to the Pentago
N2O decomposition and reduction on Co-MOR, Fe-MOR and Ni-MOR catalysts: in situ UV–vis DRS and operando FTIR investigation. An insight on the reaction pathways
No full textCo-, Fe- or Ni-exchanged Na-MOR (Si/Al = 9.2) were prepared by ion-exchange method. The catalytic activity for N2O decomposition in the absence or in the presence of NO and for N2O reduction with CH4 in the absence of O2 (CRN2O), or in the presence of O2 (SCRN2O) was investigated. The catalytic measurements were performed in a flow apparatus with GC analysis of reactants and products. On Fe-MOR, in situ FTIR and UV–vis characterization evidenced coordinatively unsaturated sites (c.u.s.) Fe2+ arising from two families of Fe3+ dimers with different reducibility. Characterization and catalytic results combined with operando FTIR experiments gave an insight into the transition metal ion (tmi) species working during N2O abatement and into the reaction pathways. For N2O decomposition the activity order was Co-MOR > Fe-MOR in the absence of NO and Fe-MOR ≥ Co-MOR in the presence of NO, whereas Ni-MOR was always inactive. The decomposition occurred via redox mechanism passing through the formation of activated surface oxygen species, Oads *. The quasi-oxidic character of this activated oxygen in the Fe3+-O(1+δ)−—Fe(2+δ)+ intermediates with respect to the oxyl character of that in Co3+O‒ intermediates accounted for the lower activity and for the activity enhancement by NO addition to the feed of Fe-MOR with respect to Co-MOR. In Ni-MOR, both isolated or dimeric Ni2+ species were unable to be oxidized by N2O yielding Oads *. For N2O reduction, (CRN2O) and (SCRN2O), the activity order was Fe-MOR > Ni-MOR > Co-MOR. On all catalysts operando FTIR experiments revealed CHxOy intermediates (methoxy, formaldehyde and two types of formate species). The investigation of surface species changing the addition order of the reactants evidenced that the formation of CHxOy intermediates was favored on Co-MOR by pre-saturation with N2O, that yielded Co3+O− able to activate CH4, whereas on Ni-MOR by pre-saturation with CH4, that reduced Ni2+ dimers to Ni+ dimers, able to activate N2O. On Fe-MOR, the Fe2+ dimers formed during activation behaved as Co2+, whereas the Fe2+ dimers formed by reduction with CH4 behaved as Ni+ dimers. The formation and the stability of Oads * surface species were key factors for N2O decomposition and reduction pathways. These factors were affected by the mobility of the tmi electrons, that depends on the oxidation state, nuclearity and location in MOR framework of tmi. © 2018 Elsevier B.V
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Distribusi Fonem Bahasa Mor
No full textThis study discussed about the phonemes distribution of Mor language. Mor language is one of the regional languages in Province of Papua that spoken by the community in the Moora Islands District, Nabire Regency. This research used descriptive method with three stages, namely data supply, data analysis, and presentation of data analysis result. Data analysis is performed after the data is classified. The analysis applied using the distribution method. The result of study showed that Mor language has 23 segmental phonemes consisting of sixteen consonants and seven vowel phonemes. The phonemes, namely/p/, /B/, /t/, /d/, /k/, /g/, /j/, /m/, /n/, /s/, /r/, /h/, /G/, /?/, /y/, /w/, /a/, /i/, /u/, /e/, /|/, /O/, and /E/.
The phonemes of Mor language in the word are partially distributed complete and some are incompletely distributed. Phoneme/p/, /t/, /m/, /n/, /i/, /u/, /e/, /O/, /E/, and /a/ are complete distributed consonant. It means, those phonemes occupy all position in the word. The phonemes /B/, /k/, /g/, /j/, /s/, /r/, /h/, and /w/ are phonemes distributed only at the beginning and middle of words. The phonemes /?/, /G/, and /y/ are phonemes which distributed in the middle and the end of the words, while the phonemes /d/ and /|/ are phonemes distributed only at the middle of the words
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