bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efeito do substrato, do pericarpo e de tratamentos pré-germinativos na emergência de plântulas de pata-de-elefante (Beaucarnea recurvata Lem.)
Authors: Rosa Yara Brito Chaim Jardim , Santo Osmar Rosa Espírito , Guimarães Rodrigo Carvalho , De Macedo Marichel Canazza , Tatara Mariana Bento , Rosa Junior Edgard Jardim 
Published: March 2015

D<p> Devido seu aspecto escultural, a pata-de-elefante (<em>Beaucarnea recurvata </em>Lem. – Ruscaceae) é uma espécie de potencial econômico, necessitando de estudos que visem à maximização de sua produção. Este trabalho avaliou o efeito de diferentes substratos, da presença do pericarpo e de tratamentos pré-germinativos na emergência de plântulas em dois experimentos distintos. No primeiro experimento, sementes com e sem pericarpo, armazenadas por 120 dias em condições ambientais, foram semeadas em substratos constituídos por: 1- Latossolo Vermelho Distroférrico (LVD); 2- areia grossa (AG); 3- 1/3 de LVD + 1/3 de AG + 1/3 de moinha de carvão (MC). Utilizou-se o delineamento experimental inteiramente casualizados e os tratamentos foram arranjados em esquema fatorial 2 x 3 com quatro repetições de 25 sementes. Os maiores valores de porcentagem (%E) e índice de velocidade (IVE) de emergência foram obtidos da semeadura de sementes sem pericarpo e os maiores valores de IVE, %E, Matéria Seca Total (MS) e Diâmetro do Caule (DC) foram observados nas plantas cultivadas no substrato composto por LVD+AG+ MC. No segundo experimento, sementes com pericarpo armazenadas por um ano em condições ambientais tiveram o pericarpo removido e receberam os seguintes tratamentos pré-germinativos: imersão em água natural por 12, 24, 36, 48, 72 e 96 horas e imersão em bioestimulante por 5 minutos nos volumes de 40, 80 e 120 mL kg-1 de sementes. Foi utilizado o delineamento experimental inteiramente casualizado com quatro repetições de 25 sementes e a semeadura foi realizada em areia grossa. Não houve efeito dos tratamentos pré-germinativos na %E sendo os maiores valores de IVE registrados quando se utilizou a embebição em água por 96 horas.</p>
Longevidade e sensibilidade de helicônias ‘Golden Torch’ ao etileno exógeno
Authors: Souza Sandra Oliveira de , Lima Maria Auxiliadora Coêlho de , Finger Fernando Luiz , Oliveira Agnelli Holanda , Barbosa José Geraldo 
Published: March 2015

<p> Neste trabalho, objetivou-se avaliar o efeito do etileno exógeno na longevidade e sensibilidade de helicônias ‘Golden Torch’ armazenadas em condições ambiente. As inflorescências foram colhidas com duas brácteas expandidas e uma fechada, em área de produção comercial localizada em Petrolina-PE. Os tratamentos consistiram de doses de ethephon (0; 0,1; 1; 10; 100 e 1.000 mg L-1) e datas de avaliação das hastes (0, 2, 4, 6, 8 e 10 dias, a 20,4 ± 3,7 ºC e 49 ± 11% UR). O delineamento experimental foi inteiramente casualizado, em fatorial 6 x 6, com 4 repetições de 4 hastes. Foram observadas perdas de massa fresca, aparência, luminosidade e croma das brácteas com o aumento das concentrações de ethephon e do tempo de armazenamento. O ângulo Hue das brácteas que receberam 100 e 1.000 mg L-1 de ethephon indicou coloração menos laranja. O consumo de água pelas inflorescências decresceu com o tempo de armazenamento, independente dos tratamen­tos com ethephon. A longevidade de inflorescências somente foi reduzida com as doses mais altas: 100 e 1.000 mg L-1 de ethephon, que a restringiram a dois e quatro dias, respectivamente. Por tais razões, as hastes de helicônias ‘Golden Torch’ caracterizaram-se como pouco sensíveis ao etileno exógeno.</p>
Adubação nitrogenada, potássica e fosfatada influenciando a qualidade e durabilidade pós-colheita de gladíolo
Authors: Rosa Rosangela Juliana Marques , Rosa Yara Brito Chaim Jardim , Rosa Junior Edgard Jardim , Silva Eulene Francisco , Martinez Matheus Andrade , Rosa Derek Brito Chaim Jardim , Soares Jackeline Schultz 
Published: March 2015

<p>O gladíolo é uma das flores de corte mais produzidas e comercializadas no Brasil e no mundo. Conduziu-se esse trabalho com o objetivo de avaliar o uso da adubação nitrogenada e potássica associada a diferentes fontes e doses de fósforo na qualidade e durabilidade em pós-colheita de gladíolos (Gladiolus hortulanus L. cv. T704) cultivados em Latossolo Vermelho Distroférrico. Utilizou-se o delineamento experimental em blocos cazualizados e os tratamentos foram arranjados em esquema de parcelas sub-subdivididas. Nas parcelas foram alocadas a presença ou não da adubação nitrogenada e potássica (NK), nas subparcelas as fontes de fósforo (superfosfato triplo, superfosfato simples e farinha de osso) e nas sub-subparcelas as cinco doses de P (0, 75,<br />150, 225 e 300 kg ha-1) dos fertilizantes estudados. As plantas foram avaliadas quanto ao número de botões florais, número de botões coloridos, número de flores abertas, qualidade da folha, qualidade da flor, qualidade da haste, altura da planta, comprimento da espiga floral, diâmetro e durabilidade da flor. Independentemente dos tratamentos e das combinações estudadas, as folhas produzidas foram classificadas como ótimas. A ação conjunta dos três fatores estudados (p&lt;0,05) foi observada apenas sobre o diâmetro e a durabilidade das flores. Concluiu-se que a adubação NK é fundamental e que as dosagens utilizadas neste trabalho<br />foram suficientes para a obtenção da classe I de qualidade de gladíolos. A utilização de superfosfato triplo é mais eficiente quando se objetiva durabilidade das flores e, a de superfosfato simples, quando se objetiva qualidade das hastes florais. Doses de fósforo entre 150 e 160 kg ha-1 são suficientes para obtenção de durabilidade e qualidade das flores e hastes dessa cultivar.</p>
Diversidade florística do bairro Nossa Senhora das Dores em Santa Maria, RS
Authors: Schwab Natalia Teixeira , Girardi Leonita Beatriz , Neuhaus Mauricio , Backes Fernanda Alice Antonello Londero , Bellé Rogério Antônio , Menegaes Janine Farias 
Published: March 2015

<p>As áreas arborizadas existentes no contexto urbano contribuem significativamente para a melhoria da qualidade de vida da sociedade. Diagnosticar essas áreas é importante para a elaboração do planejamento da arborização de uma<br />cidade. Assim, o objetivo do trabalho foi identificar, por meio de um inventário, e diagnosticar a qualidade das espécies vegetais no bairro Nossa Senhora das Dores em Santa Maria, RS, realizado no período de fevereiro a abril de 2010. Foram encontradas 99 espécies botânicas distribuídas em 47 famílias, sendo o bairro considerado com ampla diversidade vegetal. As espécies Lagerstroemia indica L., Tipuana tipu (Benth.)Kuntze e Syagrus romanzoffiana (Cham.) Glassman apresentaram maior frequência nas vias. Verificou-se a presença de várias espécies inadequadas à arborização das calçadas, como Ficus benjamina L., Inga marginata Willd., Hovenia dulcis Thunb., Melia azedarach L., entre outras. Sugere-se uma adequação e renovação de algumas espécies para o bairro Nossa Senhora das Dores a fim de proporcionar aos moradores um melhor aproveitamento do verde urbano.</p>
Proper Selection of Surfactants for Enhanced Oil Recovery Applications Based on Interfacial Rheology Measurements of Oil-Water Interfaces
Authors: Rane Jayant P. , Xu Liang 
Published: March 2015

Abstract
Asphaltenes are indigenous species in crude oil responsible for formation of tight crude oil-water emulsion during oil recovery. It is important to understand interfacial behavior of asphaltenes at the oil-water interface to understand the oil recovery process. In recent studies, using pendant drop as Langmuir trough and interfacial rheology measurements, it was concluded that asphaltenes follow a Langmuir equation of state (EOS). Such a Langmuir EOS involves only one parameter, namely surface excess coverage, which is actually the size of the molecule at the interface.
This study discusses creation of asphaltene stabilized interfaces from four crude oils from the Monterey shale and extracted asphaltene powder. Interfacial rheology and pendant drop measurements were conducted and it can be observed that the Langmuir EOS is followed for all four oils and extracted asphaltenes. The size of molecule at the interface is approximately 0.36 nm2 for all crude oils and 0.34 nm2 for extracted asphaltenes, respectively, which is consistent with the well-known Yen Mullins model. It confirms that crude oil-water interfaces are predominantly stabilized by asphaltene molecules present in crude oil.
Asphaltene stabilized interfaces are exposed to the weakly emulsifying (WE) and non-emulsifying (NE) surfactant families, which have been widely used during matrix acidizing operations in the Monterey shale. Interfacial rheology measurements conclude that asphaltene stabilized interfaces are elastic. Elastic interfaces are almost immobile (solid-like) and hence, during oil recovery, can cause issues while flowing through porous media. WE surfactants, as studied previously, form a weak emulsion during oil recovery, which aids more recovery 1–3. WE surfactants also reduce the elastic modulus of the interface significantly within seconds to make the interface mobile and deformable. Hence, it helps the oil droplet mobilize, squeeze, or elongate through the pores during oil recovery. NE surfactants, on the contrary, reduce elastic modulus slowly and do not appear to reduce the elastic modulus enough to make interface deformable (still remains elastic).
Corresponding field data shows that wells treated with WE surfactants show higher oil recovery consistently than those wells treated with NE surfactants.
An Analysis of Cyclic Steam Stimulation Projects in the California Opal A Diatomite
Authors: Elias Ramon , Powell Trey , Medizade Mason 
Published: March 2015

Abstract
Cyclic steam stimulation (CSS) in the California Opal A diatomite has been a successful commercial oil recovery technique since the 1990s. This paper analyzes the production performance of several California CSS diatomite projects comparing actual and calculated steam-oil ratios, SOR, as a function of oil recovery to ascertain whether a project is performing up to its full potential. SORs are computed using simplified Buckley-Leverett fractional flow theory applied to steam injection.
SOR, or its reciprocal oil-steam ratio (OSR), have always been useful qualitative indicators of CSS project performance; but have not been used to optimize production performance other than to say operators should strive to keep the SOR low, or the OSR high. We show that an SOR equal to about 1 is what a CSS diatomite project should achieve through the recovery of about 20% of the oil-in-place, or more, to yield the highest oil production for a given set of conditions. A corresponding “optimum” steam injection rate is discussed. Projects that are managed this way have the highest average oil production rate per well and the lowest instantaneous SOR.
This study shows that steam over-injection in the diatomite is common even when the injected cold water equivalent (CWE) steam is “in balance” with the oil and water that are produced. Although not discussed in detail, we postulate that the low permeability diatomite has an inherent low rate of heat absorption compared to other oil bearing rocks that can cause too much vapor to accumulate around the well when steam injection becomes excessive. Relative permeability effects develop during flow back that give way to (a) the preferential flow of steam to the producer and (b) constrained re-saturation of the heated zone.
Avoiding this tendency helps insure good project performance including high oil flow rates and high oil recovery. Although the calculation method we discuss is used for CSS in the low permeability diatomite, it should be helpful in all CSS applications. Improving CSS steam practices will have the added benefit of lowering the carbon intensity of the oil that is produced.
Our analysis uses published data for the needed input parameters including information from the California Division of Oil, Gas and Geothermal Resources (DOGGR) internet web data base.
Salmonid Acclimatisation in Colonial Victoria: Improvement, Restoration and Recreation 1858-1909
Authors: Minard Peter 
Published: March 2015

Abstract
Aquaculture and salmonid acclimatisation in Victoria drew upon and adapted European and American precedents to reflect local circumstances and priorities. Multiple attempts were made to acclimatise various species of European and American salmonids in Victoria throughout the nineteenth century. The Acclimatisation Society of Victoria assembled a salmonid acclimatisation network that combined transnational aquaculture expertise with local commercial imperatives, a desire to restore damaged fisheries and a unique local acclimatisation theory. This network was subsequently used and transformed by regional fish acclimatisation societies and private individuals. The network finally collapsed with the professionalisation of the Victorian fisheries in the 1880s and the establishment of the Fisheries and Game department in 1909. Exploring the rise and fall of this network demonstrates and analyses the operation of transnational acclimatisation knowledge and practices.
The Concept of Climate Improvement: Colonialism and Environment in German South West Africa
Authors: Siiskonen Harri Olavi 
Published: March 2015

Abstract
The desiccation theories formulated in the eighteenth century pointed out the connection between deforestation, rainfall reduction and climate change. After the 'Scramble for Africa' the conservation philosophy of the European colonial powers was based on anti-desiccation forest policy. This article seeks to consider how the concepts of 'desiccationism' were taken into account by the German colonists in forest and land management of their new colony: South West Africa. The conservation policy carried out by the German colonial administration was very controversial because they were interested only in areas suitable for European settlement. The early twentieth century idea of improving the climate of South West Africa by greening the Central Highland and the Namib Desert was an excellent indication of a firm belief in science. The other side of the coin was that no environmental responsibility was taken for the African reserves.
Les paradoxes des politiques multiculturelles en Bolivie : entre inclusion et exclusion
Authors: Canessa Andrew 
Published: March 2015

La Bolivie est un bon exemple de pays ayant placé le multiculturalisme au centre de son idéologie politique. L’actuelle administration Morales ne se contente pas de cautionner les politiques multiculturelles, elle a également inscrit les principes d’une nation multiculturelle et pluriethnique dans la nouvelle Constitution. Cet article décrit certains paradoxes au cœur de cette nation multiculturelle : le nouveau discours sur l’indigénéité est utilisé autant pour affranchir les masses subalternes que pour exclure d’autres populations privées d’accès aux discours du pouvoir. L’auteur montre ici que lorsque l’indigénéité passe d’un langage de protestation au langage de la gouvernance, elle peut être un facteur d’affranchissement autant que d’exclusion.
Métis malgré tout : une résistance Amazonienne aux politiques ethniques
Authors: Véran Jean-François 
Published: March 2015

Nação Mestiça est un mouvement politique né des banlieues pauvres de Manaus, capitale de l’État d’Amazonie, en réaction aux politiques dites « ethno-raciales » qui se développent à l’échelle nationale depuis le début des années 2000. Dans l’objectif de restituer et comprendre le point de vue logique à partir duquel ses militants questionnent la démocratie brésilienne, l’article montre dans un premier temps comment Nação Mestiça défend le métissage dans le parfait contresens de la déconstruction idéologique par laquelle le concept s’est vu progressivement destitué de toute légitimité au plan politique national. Il sera ensuite argumenté que cette posture doit être comprise à partir d’une pragmatique de l’expérience métisse, dans laquelle s’inscrit une conception particulière des rapports entre métissage et démocratie. Il s’agira finalement de montrer comment le mouvement déplace le débat sur les politiques « affirmatives » en le re-territorialisant au sein de l’espace pratique des enjeux micro-locaux.
Chronique d’une ethnogenèse annoncée – Histoire des luttes indiennes contemporaines dans le Nord-ouest argentin (1970-2014)
Authors: Boullosa-Joly Maïté 
Published: March 2015

On assiste à un processus important d’ethnogenèse dans la région du Nord-Ouest argentin. Il est lié au développement des lois multiculturelles qui donnent des droits culturels, sociaux et territoriaux aux populations autochtones depuis la fin des années 1980. Afin de comprendre ce processus d’ethnicisation, nous reviendrons sur l’histoire coloniale de la région et sur le traitement subi par les Indiens qu’on a dépossédés de leur territoire. Cette dépossession s’est accentuée après l’indépendance au 19 e siècle dans un pays qui, ayant construit son identité nationale sans les prendre en compte, a été considérée comme une Nation sans indiens. Comment expliquer alors ce renouveau identitaire que connaît aujourd’hui l’Argentine ? Nous reviendrons sur 40 ans d’histoire de luttes sociales et territoriales menées par les populations dans le Nord-Ouest argentin qui se revendiquent Diaguita Calchaquies. Mais nous verrons aussi les stratégies employées par les propriétaires terriens pour délégitimer les arguments des organisations indianistes. Les situations sont cependant très contrastées, plus ou moins violentes selon les contextes. Ces études de cas nous permettront de mesurer les avancées qu’a permis l’implantation des lois multiculturelles dans le pays, la valorisation identitaire qu’elles ont suscitée, les droits qu’elles ont permis de réclamer, mais d’en observer aussi les ambiguïtés et les limites.
Le double discours des politiques d’éducation interculturelle bilingue au Paraguay
Authors: Boidin Capucine 
Published: March 2015

La nouvelle Constitution du Paraguay en 1992 a reconnu le guarani comme langue officielle sur tout le territoire national aux côtés de l’espagnol. Depuis 1994 une politique nationale d’éducation bilingue interculturelle a été lancée. Le Paraguay est proclamé comme étant un pays “bilingue et pluriculturel”. Mais ce ne sont pas tant des politiques multiculturelles qui sont mises en place qu’une nouvelle manifestation de nationalisme paraguayen : la communauté nationale est imaginée comme métisse et bilingue guarani espagnol, à l’exclusion de toute autre identité ethnique. Pour comprendre la spécificité de ces politiques, il faut les situer en continuité avec la gestion historique des altérités au Paraguay à l’époque coloniale et indépendantiste : une altérité incorporée (guarani) et des altérités maintenues en état d’extériorité (Ayoreo, Aché, Enxet, Mbya...). Cela étant dit, si au niveau politique le guarani bénéficie d’une forte reconnaissance symbolique, au niveau de la planification linguistique, de nombreuses résistances envers l’usage officiel du guarani peuvent être observées. Parallèlement à cette officialisation et visibilisation croissante, se multiplient les propositions pour effacer les connotations indigènes de la langue au profit de ses dimensions nationales.
L’Afrique : futur eldorado des médias francophones ?
Authors: d’Amours Liette , Lafrance Sylvain 
Published: March 2015

Selon les prévisions de l’Organisation internationale de la francophonie (OIF), la planète devrait compter quelque 770 millions de francophones d’ici 2050, alors qu’elle n’en dénombre aujourd’hui que 200 millions. Fait encore plus étonnant : neuf locuteurs français sur dix habiteraient alors l’Afrique. À ce compte, pas surprenant que les plus grandes puissances du monde multiplient actuellement les actions pour explorer, voire exploiter, tout le potentiel économique de ce nouvel Eldorado. À l’heure où l’industrie des médias est en pleine redéfinition, n’est-ce pas l’occasion d’amorcer une réflexion majeure sur ces futurs marchés ?
La gouvernance de la gestion des risques : quoi de neuf ?
Authors: Moreau Rémi , Dionne Georges 
Published: March 2015

La gestion des risques des entreprises a grandement évolué depuis 25 ans. De nos jours, elle englobe plusieurs aspects dont la prévention, la précaution, la gestion financière et l’utilisation de l’assurance. Cela dit, quels sont les effets d’une bonne gouvernance sur la valeur d’une entreprise et qu’en est-il de la compétence des membres des conseils d’administration ?
Yves Pigneur et le Business Model Generation : un modèle d’affaires au service d’un livre... ou vice versa ?
Authors: Cardinal Jacqueline 
Published: March 2015

Un million d’exemplaires vendus, traduit en 30 langues, distribué partout au monde, le livre Business Model Generation a connu une gestation hors norme. Qu’on en juge : deux coauteurs, 470 contributeurs payants recrutés dans 45 pays par l’intermédiaire du Net, un noyau dur de concepteurs, designers, vidéastes et éditeurs, travaillant de concert en ligne à l’élaboration d’un projet exaltant ! Voilà de quoi interpeller tant les entrepreneurs de PME et les dirigeants de grandes entreprises que les gestionnaires désireux de transformer leurs idées porteuses en entreprises performantes et innovantes.
Modèles d’affaires à surveiller
Authors: d’Amours Liette 
Published: March 2015

Quels sont les modèles d’affaires en émergence ? Lesquels suscitent actuellement suffisamment l’intérêt des chercheurs universitaires pour être étudiés et cités en exemple ? Quels sont leur potentiel et leurs limites ? Pleins feux sur des modèles d’affaires à surveiller de près au cours des prochaines années et qui font grandement place à l’innovation et à la créativité, tels que Sensorica, Airbnb, Uber, etc.
Système de santé : l’ère du guichet automatique
Authors: Auger Claudine 
Published: March 2015

Désengorger le réseau de santé québécois, à un moment où la croissance des coûts, la population vieillissante et l’accessibilité aux soins semblent, à eux seuls, le mener tout droit vers le chaos ? Possible, pourtant, selon certains fervents de la télésanté. En fait, sans évincer toutes les difficultés auxquelles fait face le réseau de la santé, les technologies de l’information offrent de grandes possibilités en défiant l’espace-temps : la distance n’est désormais plus un obstacle, transformant avantageusement les pratiques et l’organisation des services ; le temps est décuplé et les compétences des spécialistes, à portée de caméra.
Expert Modeling, Expert/Self-Modeling Versus Lecture: A Comparison of Learning, Retention, and Transfer of Rescue Skills in Health Professions Students
Authors: Kardong-Edgren Suzan , Butt Ann , Macy Rosemary , Harding Sarah , Roberts Caleb J. , McPherson Sterling , Waddell Alexandra , Erickson Amanda 
Published: March 2015

Background:
It is unclear whether traditional lecture followed by simulation leads to the best learning and knowledge and skill retention over time.

Method:
A 3×4 mixed design study used three modes of education—traditional lecture with self-guided learning, expert modeling/dual viewing with brief questioning, and expert plus self-modeling—at four time points to compare knowledge, time to treat, and correct steps over time.

Results:

No significant differences were found in knowledge or time to treat between training methods. An expert modeling/ dual viewing group with brief questioning performed more steps correctly (
p
= 0.05) than did the other two groups.

Conclusion:

Expert modeling may help students remember and perform a complex series of tasks in a scenario. Further research is needed to explore expert modeling for novice learners. [
J Nurs Educ.
2015;54(4):185–191.]