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OALib Journal期刊

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Comparative analysis of leaf essential oil constituents of Piliostigma thonningii and Piliostigma reticulatum
Tira-Picos Viana,Nogueira Joseph,Gbolade Adebayo
International Journal of Green Pharmacy , 2010,
Abstract: Hydro-distilled essential oils from leaves of Piliostigma thonningii and P. reticulatum (Caesalpiniaceae) were studied by combined gas chromatography and gas chromatography-mass spectrometry for the first time. Both qualitative and quantitative differences existed in the composition of the two oils. While P. thonningii oil is composed of sesquiterpenes and monoterpene hydrocarbons, monoterpenes and sesquiterpene hydrocarbons represented the chief class of terpenoids in P. reticulatum. Major constituents in P. reticulatum leaf oil were γ-muurolene (10.3%), α-pinene (9.4%), tricyclene (7.2%), δ-cadinene (5.6%), α-terpineol (5.3%) and β-caryophyllene (4.2%). However, the sesquiterpene-rich P. thonningii oil was characterized by β-myrcene (13.3 %), limonene (8.6%), α-pinene (7.6%), β-caryophyllene (7.1%), γ-muurolene (6.1%), caryophyllene oxide (5.2%) and spathulenol (4.0%).
Comparative analysis of essential oils from the leaf, fruit and stem bark of Harungana madagascariensis
Gbolade Adebayo,Tira-Picos Viana,Nogueira Joseph,Oladele Adekunle
International Journal of Green Pharmacy , 2009,
Abstract: A comparative analysis of hydro-distilled essential oils of the leaf, stem bark and fruit of Harungana madagascariensis was carried out by gas chromatography-mass spectroscopy (GC-MS) for the first time. Both qualitative and quantitative differences existed in the composition of the three oils which comprised mainly sesquiterpene hydrocarbons (66.8-69.6%). β-caryophyllene (32.4% and 18.4% respectively, for leaf and fruit oils only), α-humulene (10.4%, 9.8% and 7.3% respectively for leaf, stem bark and fruit oils), germacrene D (8.7% for leaf oil only), and α-farnesene (37.4% and 10.4% respectively, for stem bark and fruit oils only) were the predominant constituents.
In Search of the Holy Grail: Can Military Achievements be Translated into Political Gains?
Ron Tira
Military and Strategic Affairs , 2010,
Abstract: Among military thinkers it is axiomatic that the purpose of utilizing military force is to realize a political end. According to American military doctrine the nish line of a military campaign is reached when the president no longer needs military tools in order to realize national goals. From the national-strategic end state de ned by the president, the military commander deduces the military end state required in order to realize the national end state. Still, the question remains: how is the compatibility between the military action and the desired political result achieved? The focus on military and political end states suggests that there is a near-scienti c formula that enables the engineering of a military end state that will, in a cause and effect relationship of sorts, produce the political end state. Moreover, the term “state” implies a new reality, stable and static. The term “end” indicates that the reality that is achieved is a conclusion to the military and political confrontation and allows for an exit strategy. But is this really the case? The purpose of this essay is to examine if these concepts and terms apply in Israel’s case, or if perhaps, at least in some contexts, more modest formulations are warranted. This essay will also examine how to better synchronize the military and political worlds.
Applied Strategy: The Challenges of Applying Force in a Changing Middle East
Ron Tira
Military and Strategic Affairs , 2012,
Abstract: Israel’s strategic environment of mid 2012 differs signi cantly from that of a few years ago.In the current environment, the military force application that Israel is liable to need differs in purpose, constraints, and the accompanying military-political interface from the force application of the past. The purpose of this article is to discuss some of the particular characteristics of force application in this contemporary environment.
LAS WEBQUEST COMO ESTRATEGIAS METODOLóGICAS ANTE LOS RETOS DE LA CONVERGENCIA EUROPEA DE EDUCACIóN SUPERIOR
Andrés Palacios Picos
Pixel-Bit , 2009,
Abstract: La implantación de los créditos europeos como consecuencia de la Convergencia europea en la Educación Superior va a suponer un cambio significativo en el papel del profesor en los procesos de aprendizaje, en un entorno en el que la clase deberá ir cediendo en importancia a otros espacios virtuales que permitan desarrollar nuevas actividades. En este contexto, adquieren especial relevancia las Webquest como metodologías de ense anza por proyectos, en las que el alumno es el que construye su conocimiento a partir de las acciones que se le proponen y quepreviamente ha programado el profesor.
Resposta ao trabalho de Kent e Santos: "'Os charruas vivem' nos Gaúchos: a vida social de uma pesquisa de 'resgate' genético de uma etnia indígena extinta no Sul do Brasil"
Bortolini, Maria Cátira;
Horizontes Antropológicos , 2012, DOI: 10.1590/S0104-71832012000100016
Abstract: human actions, including scientific research, are structured in individual and collective contexts. kent and santos's paper considered that in a particular scenario, but when they consider this fact they also give opportunity to interpretive actions. the most important is that the authors draw attention to emerging areas of the biological sciences, whose results could not only assist in understanding the dynamics involved in "doing science", but also as how human actions may be far from being understood only within a cultural-reductionist context. in this way, the authors introduce more elements to the debate on the need to persist, and the legitimacy of the barriers that separate biological anthropology, in which human genetics is inserted, and sociocultural anthropology.
XXV Meeting THE ITALIAN SOCIETY FOR THE STUDY OF CONNECTIVE TISSUES (SISC)
Enrica Tira,Ruggero Tenni
European Journal of Histochemistry , 2005, DOI: 10.4081/959
Abstract: XXV Meeting THE ITALIAN SOCIETY FOR THE STUDY OF CONNECTIVE TISSUES (SISC)
Rese a de "La población rural en Espa a. De los desequilibrios a la sostenibilidad social" de Luis Camarero (coord.), Fátima Cruz, Manuel González, Julio A. Del Pino, Jesús Oliva y Rosario Sampedro
Xesús A. Lage Picos
Ager : Revista de Estudios Sobre Despoblación y Desarrollo Rural , 2012,
Abstract:
El monte, el cambio social y la cultura forestal en Galicia.
Xesús Adolfo Lage Picos
Revista de Investigaciones Políticas y Sociológicas (RIPS) , 2003,
Abstract: Scrub was historically an essential part of the territory in north-western Iberian peninsula. It was part of reprodution strategies of family farms and rural communities. But these strategies went through an important change from agricultural and cattle raising functions, to consolidate like forest grow surfaces. Definitive crisis of the old traditional agrarian complex in Galicia was traumatic social and ecologically. Demographic process, peasant farms and agrarian economic integrate in agricultural food produce market meeting to scrub lands to neglect, that supposed thousand burn scrubs hectares. In eighties, social renewal uses and scrubs representations opened new horizons to these surfaces. Some circumstances converge to point towards a strong revalorisation of the scrub like multifunctional strategic resource, specially as regards to forested lands.
Mecanismos de incentivo para gest o do conhecimento
José Renato Sátira Santiago Junior
Revista Gest?o & Tecnologia , 2004,
Abstract: Atualmente as organiza es têm tido um grande interesse em desenvolver seus projetos e atividades tendo como base suas experiências e conhecimentos adquiridos ao longo dos anos. Apesar de haver um entendimento claro da importancia da gest o do conhecimento para que seus intentos estratégicos sejam alcan ados, os inúmeros erros conceituais que atrelam sua aplica o com a imprescindível necessidade do uso de um sistema de tecnologia de informa o, têm contribuído para que sua eficácia seja questionada, o que, se levado ao extremo, pode levar até mesmo ao fracasso na sua implanta o.
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