Dinámica socioeconómica y territorial de la provincia de Catamarca en la década del 90 : Impacto socio-ambiental de Proyectos de Gran Escala [PGE] : Bajo de la Alumbrera sobre Santa María

La tesis de referencia versa sobre la manera en que la actual fase del capitalismo en ámbitos periféricos se manifiesta como una neo-colonización del mundo, hecho que supone una reordenación epistémica e intelectual del mismo e impone un nuevo patrón espacial primario-exportador-exógeno. En este contexto, los territorios se recrean en su propia temporalidad, reestructurándose no sólo sus funciones sino también su valor simbólico. Concretamente se analizan los efectos territoriales del neoliberalismo vinculados a la explotación metalífera de gran escala a cielo abierto [Bajo de la Alumbrera] en la provincia de Catamarca, y en Santa María, a partir de la década del noventa [XX], proponiendo un discurso disciplinar anclado en la geografía que concibe lo espacial en su doble dimensión -material e inmaterial-, o como propone Haesbaert, como ámbito de dominación político-económica y de apropiación cultural y simbólica a la vez. Para dar cuenta de la experiencia cambiante del espacio, se pretende desentrañar la multiplicidad de procesos que ocurren y cruzan el espacio, imaginando y construyendo territorios en el área de estudio en torno a la mega-minera, procesos que encuentran respuestas a nivel local. El escrito de la tesis se organiza en tres partes. Una primera parte compuesta por los capítulos uno y dos; una segunda parte compuesta por el capítulo tres que oficia de bisagra entre los capítulos de índole general y los referentes al estudio de caso; y una tercera parte compuesta por los capítulos cuatro, cinco y seis, destinados concretamente al estudio del caso. Ampliando esta presentación, en el capítulo se presenta el marco contextual [proceso de acumulación capitalista en ámbitos periféricos] y teórico-epistemológico [estudios postcoloniales]. En el capítulo dos se presentan los métodos y técnicas empleadas y la descripción medio-ambiental y socio-productiva del estudio de caso [Santa María]. En el capítulo tres se explica la construcción del territorio como un contexto de periferia del capitalismo global y deado nacional, contexto que habilitó la actual dinámica expropiatoria. En el capítulo cuatro se analiza la multiplicidad de discursos en torno a la mega-minería, y cómo éstos recrean el territorio y permiten comprender la dinámica socio-territorial de la provincia. En el capítulo quinto se analizan las prácticas territoriales que se despliegan en el territorio a partir de Bajo de la Alumbrera y la respuesta que a nivel local encuentran las mismas. Estas prácticas recrean el territorio, dotando de nuevas funciones al mismo. En el capítulo seis se analiza la multiplicidad de representaciones espaciales a partir de la mega-minería, su relación con las trayectorias e historias de los sujetos, y cómo éstas construyen territorio, dotando de nuevos sentidos a la realidad. Finalmente, las conclusiones y los principales aportes y posibles líneas de investigación o temáticas emergentes que no pudieron ser abordadas por exceder los objetivos y recursos previstos para esta investigación

El poder material de la burguesía terrateniente. Notas sobre la evolución de la noción de latifundio. (Primera parte 1900/1950)

Fil: Pucciarelli, Alfredo Raúl. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Dinámica socioeconómica y territorial de la provincia de Catamarca en la década del 90 : Impacto socio-ambiental de Proyectos de Gran Escala [PGE] : Bajo de la Alumbrera sobre Santa María

La tesis de referencia versa sobre la manera en que la actual fase del capitalismo en ámbitos periféricos se manifiesta como una neo-colonización del mundo, hecho que supone una reordenación epistémica e intelectual del mismo e impone un nuevo patrón espacial primario-exportador-exógeno. En este contexto, los territorios se recrean en su propia temporalidad, reestructurándose no sólo sus funciones sino también su valor simbólico. Concretamente se analizan los efectos territoriales del neoliberalismo vinculados a la explotación metalífera de gran escala a cielo abierto [Bajo de la Alumbrera] en la provincia de Catamarca, y en Santa María, a partir de la década del noventa [XX], proponiendo un discurso disciplinar anclado en la geografía que concibe lo espacial en su doble dimensión -material e inmaterial-, o como propone Haesbaert, como ámbito de dominación político-económica y de apropiación cultural y simbólica a la vez. Para dar cuenta de la experiencia cambiante del espacio, se pretende desentrañar la multiplicidad de procesos que ocurren y cruzan el espacio, imaginando y construyendo territorios en el área de estudio en torno a la mega-minera, procesos que encuentran respuestas a nivel local. El escrito de la tesis se organiza en tres partes. Una primera parte compuesta por los capítulos uno y dos; una segunda parte compuesta por el capítulo tres que oficia de bisagra entre los capítulos de índole general y los referentes al estudio de caso; y una tercera parte compuesta por los capítulos cuatro, cinco y seis, destinados concretamente al estudio del caso. Ampliando esta presentación, en el capítulo se presenta el marco contextual [proceso de acumulación capitalista en ámbitos periféricos] y teórico-epistemológico [estudios postcoloniales]. En el capítulo dos se presentan los métodos y técnicas empleadas y la descripción medio-ambiental y socio-productiva del estudio de caso [Santa María]. En el capítulo tres se explica la construcción del territorio como un contexto de periferia del capitalismo global y deado nacional, contexto que habilitó la actual dinámica expropiatoria. En el capítulo cuatro se analiza la multiplicidad de discursos en torno a la mega-minería, y cómo éstos recrean el territorio y permiten comprender la dinámica socio-territorial de la provincia. En el capítulo quinto se analizan las prácticas territoriales que se despliegan en el territorio a partir de Bajo de la Alumbrera y la respuesta que a nivel local encuentran las mismas. Estas prácticas recrean el territorio, dotando de nuevas funciones al mismo. En el capítulo seis se analiza la multiplicidad de representaciones espaciales a partir de la mega-minería, su relación con las trayectorias e historias de los sujetos, y cómo éstas construyen territorio, dotando de nuevos sentidos a la realidad. Finalmente, las conclusiones y los principales aportes y posibles líneas de investigación o temáticas emergentes que no pudieron ser abordadas por exceder los objetivos y recursos previstos para esta investigación

Socio-Historical Factors Mediating Collaborative Teaching and Learning: A Design-Based Investigation and Intervention

Thesis (Ph.D.)--University of Washington, 2016-06

Economic and socio-economic evaluation of bioenergy schemes fueled with energy crops in Greece

The main aim of this thesis is to evaluate the economic and socio-economic viability of energy crops as raw material for bioenergy schemes at the local level. The case examined is Greece, a southern Mediterranean country. Based on the current state, on foreseen trends and on the information presented in the literature review (conducted at the beginning of the study), the main goal was defined as follows: To examine the evidence supporting a strong role for dedicated energy crops local bioenergy developments in Greece, a sector that is forecasted to be increasingly important in the short to medium term.' Two perennial energy crops, cardoon (Cynara cardunculus L.) and giant reed (Arundo donax L.) were evaluated. The thesis analysed their possible introduction in the agricultural system of Rhodope, northern Greece, as alternative land use, through comparative financial appraisal with the main conventional crops. Based on the output of this comparative analysis, the breakeven for the two selected energy crops was defined along with a sensitivity analysis for the risk of the potential implementation. Following, the author performed an economic and socio-economic evaluation of a district heating system fuelled with energy crops in the selected region. Finally, the author, acknowledging that bioenergy deployment should be studied in the context of innovations proceeded in examining the different perceptions of the key groups involved, farmers and potential end users. Results indicated that biomass exploitation for energy purposes is more likely to be accepted when it is seen clearly as one strand in a national energy, environmental and agricultural policy which embraces several sources of renewable energy, and which also encourages energy efficiency and conservation.

Análise de aspectos sociocientíficos em questões de química do Enem: subsídio para a elaboração de material didático para a formação cidadã

Acompanha: Manual didático: o emprego de aspectos sociocientíficos no ensino de química

Effect Of Platform Connection And Abutment Material On Stress Distribution In Single Anterior Implant-supported Restorations: A Nonlinear 3-dimensional Finite Element Analysis.

Although various abutment connections and materials have recently been introduced, insufficient data exist regarding the effect of stress distribution on their mechanical performance. The purpose of this study was to investigate the effect of different abutment materials and platform connections on stress distribution in single anterior implant-supported restorations with the finite element method. Nine experimental groups were modeled from the combination of 3 platform connections (external hexagon, internal hexagon, and Morse tapered) and 3 abutment materials (titanium, zirconia, and hybrid) as follows: external hexagon-titanium, external hexagon-zirconia, external hexagon-hybrid, internal hexagon-titanium, internal hexagon-zirconia, internal hexagon-hybrid, Morse tapered-titanium, Morse tapered-zirconia, and Morse tapered-hybrid. Finite element models consisted of a 4×13-mm implant, anatomic abutment, and lithium disilicate central incisor crown cemented over the abutment. The 49 N occlusal loading was applied in 6 steps to simulate the incisal guidance. Equivalent von Mises stress (σvM) was used for both the qualitative and quantitative evaluation of the implant and abutment in all the groups and the maximum (σmax) and minimum (σmin) principal stresses for the numerical comparison of the zirconia parts. The highest abutment σvM occurred in the Morse-tapered groups and the lowest in the external hexagon-hybrid, internal hexagon-titanium, and internal hexagon-hybrid groups. The σmax and σmin values were lower in the hybrid groups than in the zirconia groups. The stress distribution concentrated in the abutment-implant interface in all the groups, regardless of the platform connection or abutment material. The platform connection influenced the stress on abutments more than the abutment material. The stress values for implants were similar among different platform connections, but greater stress concentrations were observed in internal connections.

Health-related And Socio-demographic Factors Associated With Frailty In The Elderly: A Systematic Literature Review.

Frailty is a syndrome that leads to practical harm in the lives of elders, since it is related to increased risk of dependency, falls, hospitalization, institutionalization, and death. The objective of this systematic review was to identify the socio-demographic, psycho-behavioral, health-related, nutritional, and lifestyle factors associated with frailty in the elderly. A total of 4,183 studies published from 2001 to 2013 were detected in the databases, and 182 complete articles were selected. After a comprehensive reading and application of selection criteria, 35 eligible articles remained for analysis. The main factors associated with frailty were: age, female gender, black race/color, schooling, income, cardiovascular diseases, number of comorbidities/diseases, functional incapacity, poor self-rated health, depressive symptoms, cognitive function, body mass index, smoking, and alcohol use. Knowledge of the complexity of determinants of frailty can assist the formulation of measures for prevention and early intervention, thereby contributing to better quality of life for the elderly.

Improved Selective Cholesterol Adsorption By Molecularly Imprinted Poly(methacrylic Acid)/silica (pmaa-sio₂) Hybrid Material Synthesized With Different Molar Ratios.

The present paper describes the synthesis of molecularly imprinted polymer - poly(methacrylic acid)/silica and reports its performance feasibility with desired adsorption capacity and selectivity for cholesterol extraction. Two imprinted hybrid materials were synthesized at different methacrylic acid (MAA)/tetraethoxysilane (TEOS) molar ratios (6:1 and 1:5) and characterized by FT-IR, TGA, SEM and textural data. Cholesterol adsorption on hybrid materials took place preferably in apolar solvent medium, especially in chloroform. From the kinetic data, the equilibrium time was reached quickly, being 12 and 20 min for the polymers synthesized at MAA/TEOS molar ratio of 6:1 and 1:5, respectively. The pseudo-second-order model provided the best fit for cholesterol adsorption on polymers, confirming the chemical nature of the adsorption process, while the dual-site Langmuir-Freundlich equation presented the best fit to the experimental data, suggesting the existence of two kinds of adsorption sites on both polymers. The maximum adsorption capacities obtained for the polymers synthesized at MAA/TEOS molar ratios of 6:1 and 1:5 were found to be 214.8 and 166.4 mg g(-1), respectively. The results from isotherm data also indicated higher adsorption capacity for both imprinted polymers regarding to corresponding non-imprinted polymers. Nevertheless, taking into account the retention parameters and selectivity of cholesterol in the presence of structurally analogue compounds (5-α-cholestane and 7-dehydrocholesterol), it was observed that the polymer synthesized at the MAA/TEOS molar ratio of 6:1 was much more selective for cholesterol than the one prepared at the ratio of 1:5, thus suggesting that selective binding sites ascribed to the carboxyl group from MAA play a central role in the imprinting effect created on MIP.

Mesenchymal Stromal Cells From Adipose Tissue Attached To Suture Material Enhance The Closure Of Enterocutaneous Fistulas In A Rat Model.

Surgical treatment for enterocutaneous fistulas (EF) frequently fails. Cell therapy may represent a new approach to treatment. Mesenchymal stromal cells (MSCs) have high proliferative and differentiation capacity. This study aimed to investigate whether MSCs could adhere to suture filament (SF), promoting better EF healing. MSCs, 1 × 10(6), from adipose tissue (ATMSCs) were adhered to a Polyvicryl SF by adding a specific fibrin glue formulation. Adhesion was confirmed by confocal and scanning electron microscopy (SEM). A cecal fistula was created in 22 Wistar rats by incising the cecum and suturing the opening to the surgical wound subcutaneously with four separate stitches. The animals were randomly allocated to three groups: control (CG)-five animals, EF performed; injection (IG)-eight animals 1 × 10(6) ATMSCs injected around EF borders; and suture filament (SG): nine animals, sutured with 1 × 10(6) ATMSCs attached to the filaments with fibrin glue. Fistulas were photographed on the operation day and every 3 days until the 21st day and analyzed by two observers using ImageJ Software. Confocal and SEM results demonstrated ATMSCs adhered to SF (ATMSCs-SF). The average reduction size of the fistula area at 21st day was greater for the SG group (90.34%, P < 0.05) than the IG (71.80%) and CG (46.54%) groups. ATMSCs adhered to SF maintain viability and proliferative capacity. EF submitted to ATMSCs-SF procedure showed greater recovery and healing. This approach might be a new and effective tool for EF treatment.

Brazilian Natural Fiber (jute) As Raw Material For Activated Carbon Production.

Jute fiber is the second most common natural cellulose fiber worldwide, especially in recent years, due to its excellent physical, chemical and structural properties. The objective of this paper was to investigate: the thermal degradation of in natura jute fiber, and the production and characterization of the generated activated carbon. The production consisted of carbonization of the jute fiber and activation with steam. During the activation step the amorphous carbon produced in the initial carbonization step reacted with oxidizing gas, forming new pores and opening closed pores, which enhanced the adsorptive capacity of the activated carbon. N2 gas adsorption at 77K was used in order to evaluate the effect of the carbonization and activation steps. The results of the adsorption indicate the possibility of producing a porous material with a combination of microporous and mesoporous structure, depending on the parameters used in the processes, with resulting specific surface area around 470 m2.g-1. The thermal analysis indicates that above 600°C there is no significant mass loss.

Produção de serapilheira e decomposição do material foliar em um cerradão na Estação Ecológica de Jataí, município de Luiz Antônio, SP, Brasil

We estimate litter production and leaf decomposition rate in a cerradão area, physiognomy little studied and very threatened in São Paulo State. During the period of study, litter production was 5646.9 kg.ha-1.year-1, which the 'leaf' fraction corresponded to 4081.2 kg.ha¹.year¹; the 'branch' fraction, to 1066.1 kg.ha-1.year-1; the 'reproductive structures' fraction, to 434.1 kg.ha-1.year-1; and the 'miscellaneous' fraction to 65.5 kg.ha-1.year-1. Litter production was highly seasonal and negatively correlated with relative humidity and air temperature. Leaf production was negatively correlated with relative humidity, rainfall, and air temperature. There was no significant difference between litter production found in this study and those in two other sites with cerradão and semideciduous forest, but these physiognomies differed significantly from the cerrado sensu stricto. Leaf decomposition rate (K) was 0.56. Half-life of the decomposing material was 1.8 years and turnover time was 2.3 years.

Crescimento, composição corporal e performance motora em crianças e adolescentes de 7 a 14 anos provenientes de familias de baixo nivel socio-economico e participantes do projeto esporte solidario, São Luis - MA

Universidade Estadual de Campinas . Faculdade de Educação Física

Barreiras socio-culturais e lazer das pessoas portadoras de deficiencia fisica : um estudo do grupo Fraternidade Cristã de Doença e Deficiencia de Campinas, SP

Universidade Estadual de Campinas. Faculdade de Educação Física

Avaliação e intervenção socio-neuromotora de crianças com marasmo na primeira infancia

Universidade Estadual de Campinas . Faculdade de Educação Física