705 research outputs found
“Los intereses de la federación rusa en Siria en términos de Grand Strategy entre los años 2013 y 2015”
En este artĂculo, se expone el Grand Strategy de la FederaciĂłn Rusa en Siria. Se pretende demostrar que si bien el terrorismo islámico puede llegar a ser una amenaza en contra de la territorialidad de Rusia con la apariciĂłn de cĂ©lulas de ISIS en el Cáucaso, las acciones de Rusia en contra del Estado Islámico, se explican tambiĂ©n por el desarrollo de su Grand Strategy, para la cual el actual rĂ©gimen sirio resulta instrumental. Para sostener esta hipĂłtesis se explica primero la actual situaciĂłn de Siria, el surgimiento del Estado Islámico (ISIS) y algunas de las medidas tomadas a nivel internacional para contenerlo. Posteriormente se expone el concepto de Grand Strategy y se abordan algunos elementos que explican por quĂ© Rusia desea mantener a Siria como su aliado. Finalmente se presenta el Plan de acciĂłn de Rusia para lograr sus objetivos en Siria.This paper presents the Grand Strategy of the Russian Federation in Syria. The objective is to prove that despite the fact that Islamic terrorism might be a threat against Russian territoriality, given the emergence of Islamic State cells in the northern Caucasus, the intervention in Syria can be explained by the development of Russia’s Grand Strategy, for which the current regime is instrumental. To argue this hypothesis, the article begins explaining current circumstances in Syria, the rise of the Islamic State (ISIS) and the measures taken at the international stage to tackle this organization. Further on, it exposes the concept of Grand Strategy, and explains why it is so important for Russia to keep Syria as an ally. Finally, it presents Russia’s action plan to achieve its objectives in Syria.Universidad del Rosari
Faculty World-Traveling in the University
In this paper, I will be applying MarĂa Lugones theory of “World-Traveling”, “Arrogant Perception”, and “Decolonial Feminism” to the experiences of minority faculty-specifically women faculty of color- in American institutions of higher education. After going through an in-depth description of Lugones’ concepts, I will then describe how some of her ideas like arrogant perception, world-traveling, and worlds can apply to the exclusionary remnants of American institutions of higher education. Focusing on tenure and its standards (service, classroom performance, and research), one can see how minority faculty are forced to deal with the remnants of these exclusionary practices and how their experiences bring to life another side of recent diversity initiatives in American institutions of higher education. After cementing Lugones’ concepts into the real experiences of minority faculty, this paper will go into how these problems can be alleviated using Lugones’ “Decolonial Feminism” and the “Loving Perception”
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Clinics in the Rio Grande Valley break away from Planned Parenthood to access state funds
textThis report explores the impact that the 2011 family planning budget cuts in Texas had on women's health clinics. Specifically, the report focuses on how Hidalgo County Planned Parenthood broke away from the national organization as a result of these cuts, in order to better serve the community. In 2014, the clinics re-opened as an independent nonprofit: Access Esperanza. The report looks at several factors dealing with the broader issue of reproductive healthcare in the Lower Rio Grande Valley: barriers faced by women when accessing healthcare, abortion as an ideology, government accountability and the evolution of Access Esperanza's disaffiliation from Planned Parenthood.Journalis
An RS-485 Transceiver in a Silicon Carbide CMOS Process
This thesis presents the design, simulation and test results of a silicon carbide (SiC) RS-485 transceiver for high temperature applications. This circuit is a building block in the design and fabrication of a digital data processing and control system. Automation processes for extreme environments, remote connection to high temperature locations, deep earth drilling, and high temperature data acquisition are some of the potential applications for such a system. The transceiver was designed and developed in a 1.2 µm SiC-CMOS process by Raytheon Systems, Ltd. (UK). It has been tested with a supply voltage of 12 V and 15 V, temperatures from 25°C to 400°C, half-duplex and full-duplex configurations, and with 2400 ft of category 5e (cat5e) cable. At 400°C, the rise and fall times are 32 ns and 24 ns respectively. The transceiver has been tested with a silicon RS-485 transceiver over temperature in order to characterize the device performance when acquiring data from a hot environment and transmitting it to a cooler environment and vice versa. Finally, high temperature performance over time is demonstrated over 150 hours at 300°C
Review of Cultural Forests of the Amazon: A Historical Ecology of People and Their Landscapes by William Balée
Effect of pre-treatment with ethanolamine on the response of Helianthus annuus L. to salt stress
The accumulation of compatible solutes is one of the strategies that plants have developed to tolerate salt stress. Proline and betaine are the main metabolites that accumulate in various species of higher plants in response to salt stress. In Helianthus annuus L., pre-treatment of seeds with ethanolamine led to enhanced seedling tolerance to conditions of saline stress during germination, as evidenced by the greater growth of pretreated seedlings (EAS group) versus untreated seedlings (S group), evaluated through such parameters as length, water and chlorophyll content. During the germination period, a considerable increase was observed in proline levels (up to 300%) in seedlings subjected to saline stress, whereas in the EAS group, the proline increment was much smaller (20%). Starting from the fourth day of germination, betaine levels in seedlings pretreated with ethanolamine and then with water (EAW group) and in EAS showed a significant increase versus C (control) and S seedlings, possibly because such a precursor promotes betaine biosynthesis. This could be responsible for the enhanced growth observed in EAS versus S seedlings, as well as for preventing the decrease in chlorophyll content in the EAS group. The accumulation of betaine seems to correlate with the greater tolerance of these seedlings against stress induced by sodium chloride.Fil: Kogan, Marcelo Javier. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; ArgentinaFil: Kristoff, Gisela. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Benavides, Maria Patricia. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Tomaro, Maria Lujan. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentin
Relationship between polyamines and paraquat toxicity in sunflower leaf discs
Polyamines have been reported as efficient antioxidant compounds in plants. Sunflower leaf discs, treated with 100 ÎĽM paraquat (PQ), a well known oxidative stress inducer, showed decreased levels of putrescine (Put), spermidine (Spd) and spermine (Spm) (between 33% and 80% with respect to the controls). Arginine decarboxylase (ADC) and ornithine decarboxylase (ODC) activities decreased 42% and 33% respectively. Among the markers of oxidative stress measured after PQ treatment, chlorophyll and glutathione content were reduced (30% and 49% respectively) and thiobarbituric acid reactive substances (TBARS) content increased (60%). Superoxide dismutase (SOD) activity declined 60% with respect to the control and lipoxygenase (LOX) increased 25% when leaf-discs were treated with the herbicide. Pretreatment with exogenous polyamines (1 mM) reversed paraquat toxicity to different degrees according to the polyamine and/or the tested parameter. Spermidine was able to inhibit chlorophyll loss, while Spm reverted the effect of PQ on the level of TBARS almost completely and also restored SOD activity close to control values. Putrescine was the least effective as an oxidant protectant. These results provide support for the argument that polyamines are effective antioxidants through their ability to act as radical scavengers.Fil: Benavides, Maria Patricia. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Gallego, Susana Mabel. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Comba, MarĂa E.. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; ArgentinaFil: Tomaro, Maria Lujan. Universidad de Buenos Aires. Facultad de Farmacia y BioquĂmica. Departamento de QuĂmica BiolĂłgica. Cátedra de QuĂmica BiolĂłgica Vegetal; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentin
THE EFFECT OF ARSENIC SPECIATION ON ARSENIC UPTAKE AND FATE IN THE PRESENCE OF THE HYPER-ACCUMULATING SPECIES PTERIS CRETICA
Understanding arsenic uptake mechanisms employed by the arsenic hyper-accumulator Pteris cretica is important to optimize its arsenic accumulation capability to further improve the treatment process for small-scale or point of use applications in the developing world.Since most of the approaches for arsenic control using Phytoremediation as a treatment technology that have been conducted using arsenate as arsenic source[26], the present study was carried using arsenite to determine the role of speciation in arsenic uptake by the hyper-accumulator Pteris cretica.It was determined that trivalent arsenic oxidation plays an important role on the overall arsenic uptake. When trivalent arsenic was added to the aerated solution, only about 50% of the initial arsenite concentration was oxidized to arsenate regardless the exposure time. On the other hand, in the presence of Pteris ferns, arsenite is completely oxidized as it is being removed from the solution. In order to further elucidate the fate of arsenite in the presence of plant roots, experiments were conducted with Boston fern (Nephorlepis exaltata) a non hyper-accumulating fern that is sensitive to arsenic [35]. It was observed that the total concentration of arsenic in solution remains constant but arsenite is converted to arsenate.Given that these plant species do not have the ability to oxidize arsenite [24], our hypothesis is that the microbial community of the rhizosphere is responsible for arsenite oxidation as a symbiotic relationship with the plant, which has never been evaluated by other groups working with this technology. Studies in the presence of non-accumulating Boston fern were conducted to evaluate this hypothesis by adding an antibiotic cocktail to the arsenic solution together in an effort to suppress microbiological activity in the rhizosphere and a reduction in arsenite oxidation rates was observed. These results provide evidence of a symbiotic relationship between arsenic oxidizing microorganisms and arsenic hyper-accumulating plants, and suggest that the oxidation step is crucial on the arsenic uptake process when arsenic is present as arsenite
SistematizaciĂłn de la práctica: CĂłmo afectan los hábitos a los aprendices del SENA entre edades de 16 a 45 años en la etapa lectiva actualmente en la ciudad de MedellĂn
Tesis de la Sede Bello Uniminuto-Seccional BelloEn esta sistematizaciĂłn se analizaron los hábitos de estudio que desarrollan algunos de los aprendices del SENA entre las edades de 16 a 45 años, que se encuentran en la etapa lectiva de la ciudad de MedellĂn, a travĂ©s de la evaluaciĂłn de talleres que permitieron interpretar los hábitos y las tĂ©cnicas como resultado de lo aprendido, reflejando detalles del mismo, por medio del proceso de valoraciĂłn en las olimpiadas del conocimiento, las cuales tienen como objetivo proporcionar a los aprendices unas herramientas mĂşltiples y cognitivas que les permiten demostrar el discernimiento progresivo o nulo de teorĂas y prácticas de diferentes temas o enfoques del saber.CorporaciĂłn Universitaria Minuto de Dio
Responsabilidad de las personas juridicas en los delitos medio ambientales
64 p.Esta investigación busca clarificar la problemática existente, cuando se produce un
daño ambiental de envergadura y donde el responsable de Ă©l es una persona jurĂdica,
entes que basados en el principio societas delinquere non potest, no pueden ser capaces de ser imputables. Por lo tanto lo que observaremos es cuales son las teorĂas o formas de criminalidad que han surgido para poder contrarrestar los daños que provocan las empresas al entorno, y buscando claramente que dejen de estar en la impunidad, siendo este tipo de sujetos de derecho los que dañan de manera mas grave al medio ambiente, junto a ello ver cual es la posiciĂłn adoptada por nuestro paĂs frente a este tema de relevancia mundial
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