Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 158 )

2018 ( 274 )

2017 ( 292 )

2016 ( 459 )

Custom range...

Search Results: 1 - 10 of 223791 matches for " R. Texeira "
All listed articles are free for downloading (OA Articles)
Page 1 /223791
Display every page Item
Mujeres malague as en la represión franquista a través de las fuentes escritas y orales
Encarnación Barranquero Texeira
Historia Actual Online , 2007,
Abstract: Este trabajo analiza el alcance de la represión en las mujeres. Guerra y después miseria son el marco de una política que afectó de lleno a las mujeres, para las que hubo castigos específicos y condenas de las que no se privaron pese a presentarse el régimen como paternalista y protector de la familia. Archivos y recuerdos de mujeres que vivieron aquellos a os nos aportan luz sobre aspectos desconocidos.
Efeitos do modo ventilatório sobre variáveis hemogasométricas em equinos submetidos à mudan?a de decúbito durante a anestesia geral inalatória com halotano
, P.A.;Texeira Neto, F.J.;Campagnol, D.;Fran?a, R.O.;Moreira, M.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2010, DOI: 10.1590/S0102-09352010000300008
Abstract: the effects of spontaneous (sv) and controlled ventilation (cv) were compared in horses undergoing changes in body position during anesthesia. sixteen animals were equally distributed in two groups: sv and cv. all surgical procedures were commenced on left lateral recumbency (llr) and 75 minutes later the animals were repositioned on right lateral recumbency (rlr). arterial blood gas analyses were performed at 30 and 75 minutes after each recumbency (m1 and m2 for llr and m3 and m4 for rlr). hypercapnia (paco2 >45mmhg), respiratory acidosis (ph <7.35), and significant decrease in pao2 after 75min of change in body position (m4: 205.8±124.7mmhg) in comparison to pao2 values before the change of position (m1: 271.8±84.8mmhg) were observed during sv. when compared to the sv group, cv resulted in significantly higher pao2 levels (52 to 96% increase). it was concluded that the change in the body position in spontaneously ventilating halothane-anesthetized horses causes impairment in arterial oxygenation. the use of cv since the beginning of anesthesia prevents the respiratory acidosis and maintains arterial oxygen levels that are closer to values expected during the use of 100% o2.
Implications of Design, Management and Recession Phase in Drip Irrigation on the Total Distribution Efficiency in Blueberry (Vaccinium corymbosum L.) Crops in Areas with High Slopes in Concordia, Argentina  [PDF]
A. Pannunzio, E. A. Holzapfel, P. Texeira Soria, F. Bologna
Agricultural Sciences (AS) , 2016, DOI: 10.4236/as.2016.77048
Abstract: The increase of human population generates the need to improve the efficiency of food production. A thorough planning is required following the scope of economic and sustainable development, being irrigation a basic tool, however water availability is restricted and it obliges farmers to progress increasing water productivity. Irrigation uses around 70% of total available fresh water, while irrigation water application efficiency is around 40%. Irrigation systems must follow strong criteria at the design stage to achieve high values of water productivity. Maintenance is indispensable to follow the original functioning level of those systems. At last the daily precise management of systems, following soil water potential, considering the effective rain storage at root depth of the crop and the evolution of daily evapotranspiration, preserving natural resources, are relevant to achieve low values of water footprint of this crop. In an 8 year drip irrigation system, the Uniformity Coefficient of Christiansen (UCC) measured was 95.14%; the Uniform Coefficient of the Minor Quart (UCMQ) was 93.16%. The Total Distribution Efficiency (EDT) was 95.13% when measurements finished while the irrigation systems is of. When measurements also considered the volume collected during the “recession phase in drip irrigation” and the “volume of water collected during recession phase in drip irrigation” collected at different points, EDT was 95.13%. Moreover it can be seen that when three different typical soil of the area were considered, the EDT was, 91.85%, 91.47% and 90.30% respectively, according with different water storage capacity of each soil. The Total Distribution Efficient is a strong method, to evaluate the design and management of drip irrigation systems, under different design criteria, management practices and maintenance of the systems. Water footprint in a blueberry (Vaccinium corymbosum L.) crop with drip and sprinkler anti-frost system, were measure and values obtained were 846, 310, 223, 212, 172 and 218 liters per kg of fresh fruit in the period 2010-2015. The UCC and the UCMQ reflects properly the irrigation design, while the EDT reflects irrigation design, management and maintenance. Water footprint is at last the strong tool to evaluate design and operation of the irrigation system and crop management.
Qualidade fisiológica de sementes de trigo em resposta aos efeitos de anos e épocas de semeadura
Viganó, Joselaine;Braccini, Alessandro de L. e;Scapim, Carlos A;Franco, Francisco de A;Schuster, Ivan;Moterle, Lia M;Texeira, Leandra R;
Revista Brasileira de Sementes , 2010, DOI: 10.1590/S0101-31222010000300010
Abstract: the objective of this study was to evaluate the physiological quality of wheat seeds in response to the effects of years and sowing dates. in 2006 and 2007 seeds of the wheat cultivars cd 104, cd 105, cd 108, cd 110, cd 111 and cd 114 were sown on march 22nd, april 7th and 20th, may 4th and 18th, in the palotina region, paraná state. it was analysed the following traits: germination, seedling vigor classification and accelerated ageing. the data were subjected to joint variance analysis between the two years of the experiment and cultivars, sowing dates and years, for all combinations. the germination of the cultivars cd 105 and cd 108 were less influenced by sowing dates in both crop years. the results from germination tests, classification of seedling vigor and accelerated ageing showed that the sowing periods of march 22nd, april 7th and may 18th, in 2006, were not ideal for cultivars cd 110, cd 111 and cd 114. most sowing dates and cultivars in 2007 showed higher percentages of normal seedlings than for 2006. furthermore, most of the cultivars showed greater similarity between the years for the april 20th sowing date according to the results of the tests for germination and classification of seedling vigor.
The young, tight and low mass binary TWA22AB: a new calibrator for evolutionary models ? Orbit, spectral types and temperatures determination
M. Bonnefoy,G. Chauvin,C. Dumas,A-M. Lagrange,H. Beust,M. Desort,R. Texeira,C. Ducourant,J-L. Beuzit,I. Song
Physics , 2009, DOI: 10.1051/0004-6361/200810921
Abstract: Tight binaries discovered in young, nearby associations, with known distances, are ideal targets to provide dynamical mass measurements to test the physics of evolutionary models at young ages and very low masses. We report for the first time the binarity of TWA22, possible new dynamical calibrator for evolutionary models at young ages. Based on an accurate trigonometric distance (17.53 +- 0.21 pc) determination, we infer a total dynamical mass of 220 +- 21 MJup for the system. From the resolved near-infrared integral-field spectroscopy, we find an effective temperature Teff=2900+200-200 K for TWA22 A and Teff=2900+200-100 K for TWA22 B and surface gravities between 4.0 and 5.5 dex. From our photometry and a M6 +- 1 spectral type for both components, we find luminosities of log(L/Lsun)=-2.11 +- 0.13 dex and log(L/Lsun)=-2.30 +- 0.16 dex for TWA22 A and B respectively. By comparing these parameters with evolutionary models, we question the age and the multiplicity of this system. We also discuss a possible underestimation of the mass predicted by evolutionary models for young stars close to the substellar boundary.
Impacto de los sistemas de riego por goteo en arándanos
Pannunzio, Alejandro;Vilella, Fernando;Texeira, Pamela;Premuzik, Zdenka;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2011, DOI: 10.1590/S1415-43662011000100001
Abstract: the experiment examined the effects of different drip irrigation systems in an o′neal variety of blueberry (vaccinium corymbosum l). it was contucted at zarate (33o 41’ s and 59o 41’ w), buenos aires, argentina. plants of the experiment were planted in august of 2001, after one year in nursery. the first harvest was realized in october of 2003. the main scope of the experiment was to find the irrigation system which maximized yields. treatments were: one drip irrigation line with drippers at 40 cm (t1) and two laterals with drippers at 20 cm per row (t2). the experiment was conducted in a completely randomized block design, each one with 5 plants and 5 replications. during the harvest of october and november of 2003, reported yields were 2436 kg ha-1 for the treatment t1 and 4335 kg ha-1 for the treatment t2. treatments that partially irrigate beds are insufficient to obtain high yields.
Evaluación de la Utilidad de la Información Financiera Elaborada por la Peque a Empresa: Un Estudio Empírico
Patricia Milanés Montero,Joaquín Texeira Quirós
Revista de Contabilidad : Spanish Accounting Review , 2006,
Abstract: El importante papel económico y social que desempe an las entidades de menores dimensiones en Espa a y en toda Europa y el actual escenario de reforma contable en que nos encontramos justifican la importancia de analizar el grado de cumplimiento de los objetivos utilitaristas de la información contenida en las Cuentas Anuales elaboradas conforme a las normas domésticas actualmente en vigor. Así, en este trabajo se aporta evidencia empírica al respecto utilizando para ello una encuesta de opinión dirigida a los gerentes de estas empresas. Los resultados revelan que la información elaborada conforme a las normas domésticas incumple sus objetivos utilitaristas y que entre las causas de dicho incumplimiento atribuibles al empresario se encuentran su mentalidad de considerar la contabilidad como un gasto y no como una inversión y su escasa formación en materia contable.The important economic and social role that carry out the small entities in Spain and in all Europe and the current strategy of harmonising the financial information, make worth the analysis of the degree of execution of the objective of utility of the Annual Accounts elaborated according to the domestic standards. In this context, we provide empirical evidence about it by means of a questionnaire sent to the managers of these companies. The results obtained show that the financial information elaborated in conformity with the domestic accounting standards doesn't complete its objective of utility and that the causes of this that can be responsibility of the managers are their mentality of considering the accounting as a cost instead that an investment and their scarce formation in accounting.
Patricia Adalgisa Gobitti Alves,Marcelo Texeira Cesar de Oliveira
Revista Brasileira de Ecoturismo , 2011,
Abstract: O Cerrado é um dos biomas mais destruídos pela a o da agricultura mecanizada para plantio de soja, algod o e milho em várias regi es do Brasil, tendo reduzido, significativamente, a sua área original. Em S o Paulo, representado por manchas em diversas regi es do Estado, está hoje preservado em algumas Unidades de Conserva o (UC)s públicas como os Parques Estaduais das Furnas do Bom Jesus, de Porto Ferreira, Vassununga e na Floresta Estadual de Assis, todos sob a responsabilidade da Funda o para a Conserva o e a Produ o Florestal do Estado de S o Paulo. O Parque Estadual do Juquery (PEJ), que apresenta o último fragmento de cerrado da Regi o Metropolitana de S o Paulo (RMSP), está situado nos municípios de Franco da Rocha e Caieiras. O Decreto Estadual no 36.859/93 garantiu a prote o de uma área total de 2.058,09 ha, situada nas coordenadas 23o21'S e 46o42'W. O acesso ao PEJ pode ser feito pela rodovia Pref. Luiz Salom o Chamma (SP-023). O presente trabalho analisou o potencial para a atividade de ecoturismo e educa o ambiental, considerando a demanda potencial de público, as condi es atuais das instala es, as trilhas, a paisagem e o atendimento ao visitante. Foram realizadas visitas entre mar o de 2009 a dezembro de 2010 registrando com fotos e anota es de campo. A pesquisa foi complementada através de bibliografia, documentos e da legisla o, além da internet . O acesso ao PEJ é fácil e a proximidade a cidade de S o Paulo, o maior mercado emissivo brasileiro em ecoturismo, tornam a área uma regi o potencial para visita es curtas aos finais de semana e feriados prolongados. Na área existe um Núcleo de Educa o Ambiental (NEA) com museu compostos de exemplares de flora e de animais locais taxidermizados, moldes de pegadas em gesso, painéis explicativos, rochas e vitrine do bioma do cerrado. O auditório tem equipamentos multimídia e capacidade de 60 pessoas. Apenas dois banheiros para o público em toda área. Lixeiras de reciclados foram encontrados em apenas uma área do PEJ. N o existe venda de alimentos mas quiosques para piqueniques. N o há estacionamento planejado e nem nenhuma estrutura para acesso de portadores de deficiência. Possui seis trilhas abertas ao público, uma delas levando a uma torre de observa o. Placar tem informa o de tamanho do percurso e o grau de dificuldade. N o há avisos ou e recomenda es sobre riscos. é obrigatória para a trilha dos Pitus. O PEJ recebe escolares com agendamento prévio. N o foi identificado uma programa de forma o de monitores e houve carência de informa es sobre o ambiente. Apesar das condi es en
Ant?nio Lelis Pinheiro,Ana Paula Texeira do Carmo
Ciência Florestal , 2012,
Abstract: S o descritos neste trabalho os aspectos anat micos da madeira de Rapanea ferruginea (Ruiz et Pav.) Mez. Apresentam-se dados quantitativos de 11 caracteres do xilema secundário, bem como fotomicrografias das estruturas anat micas da madeira. Os raios largos e a largos e a baixa percentagem de parênquima axial s o os caracteres mais importantes na estrutura do lenho.
Control of dinucleoside polyphosphates by the FHIT-homologous HNT2 gene, adenine biosynthesis and heat shock in Saccharomyces cerevisiae
Marta Rubio-Texeira, James M Varnum, Pawel Bieganowski, Charles Brenner
BMC Molecular Biology , 2002, DOI: 10.1186/1471-2199-3-7
Abstract: Here we demonstrate that dinucleoside polyphosphate levels increase 500-fold to hundreds of micromolar in strains devoid of the Saccharomyces cerevisiae homolog of Fhit, Hnt2. Accumulation of dinucleoside polyphosphates is reversed by re-expression of Hnt2 and is active site-dependent. Dinucleoside polyphosphate levels depend on an intact adenine biosynthetic pathway and time in liquid culture, and are induced by heat shock to greater than 0.1 millimolar even in Hnt2+ cells.The data indicate that Hnt2 hydrolyzes both ApppN and AppppN in vivo and that, in heat-shocked, adenine prototrophic yeast strains, dinucleoside polyphosphates accumulate to levels in which they may saturate Hnt2.The human FHIT gene, located at the chromosome 3 fragile site FRA3B, is inactivated early in the development of many tumors [1]. Murine Fhit is also located at a fragile site [2,3] and mice heterozygous for disruption of Fhit, given low intragastric doses of the mutagen N-nitrosomethylbenzylamine, develop stomach and sebaceous tumors [4] that can be prevented by viral Fhit expression [5]. Fhit, a dimer of 147 amino acid subunits, is a member of the histidine triad (HIT) superfamily of nucleotide hydrolases and transferases [6,7]. Members of the Hint branch of the HIT superfamily are found in all forms of life [8]. The S. cerevisiae Hint homolog, Hnt1, and rabbit Hint possess adenosine monophosphoramidase activity that functions in yeast to positively regulate function of Kin28, Ccl1 and Tfb3, which constitute the kinase component of general transcription factor TFIIH [9]. A new Hint related protein, Aprataxin, is mutated in individuals with ataxia with oculomotor apraxia [10,11] and has a yeast homolog termed Hnt3 [9]. Members of the Fhit branch of the HIT superfamily have been found in fungi [12,13], animals [2,14,15] and plants [7] and hydrolyze diadenosine tetraphosphate, diadenosine triphosphate and other 5'-5"'-dinucleoside polyphosphates. The middle histidine of the histidine triad
Page 1 /223791
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.