ATIVIDADE ENZIMÁTICA DE MICRORGANISMOS ISOLADOS DO JACATUPÉ (Pachyrhizus erosus L. Urban)

O isolamento e a identificação de microrganismos produtores de enzimas de interesse comercial, utilizando tubérculos de jacatupé (Pachyrhizus erosus L. Urban), foi o objetivo principal deste trabalho. Isolaram-se microrganismos endofíticos e epifíticos identificados por observação micromorfológica. A avaliação da atividade enzimática das linhagens foi determinada pelo método de difusão em ágar. As sessenta e oito linhagens isoladas dos tubérculos de jacatupé foram cultivadas em meio sólido específico para amilase, lipase, protease e celulase por 96h a 280 C. Os microrganismos epifíticos encontrados foram Pithomyces (7,3%), Aspergillus (19,2%), Fusarium (5,9%) e Trichoderma (5,8%), e os endofíticos foram Mucor (7,3%), Rhizopus (10,3%), Bacillus (19,0%), Staphylococcus (10,3%) e Nocardiopsis (15%). As linhagens de Nocardiopsis sp. apresentaram atividade lipolítica superior à do padrão, porém a atividade amilolítica não apresentou diferença significativa comparada com o padrão. As linhagens de Mucor sp., Pithomyces sp. e Staphylococcus sp. produziram atividade proteolítica abaixo do padrão. Nenhum isolado apresentou atividade celulolítica.

Germinação de sementes de Operculina macrocarpa (L.) Farwel e Operculina alata (Ham.) Urban

Várias espécies vegetais nativas produzem sementes que, mesmo vivas, apresentam dificuldades para germinar. Assim, foram conduzidos dois experimentos com o objetivo de identificar métodos para a superação da dormência de sementes de Operculina macrocarpa e para a germinação de sementes de O. macrocarpa e Operculina alata. No primeiro, sementes de O. macrocarpa foram submetidas a oito tratamentos visando a superação de dormência: frio seco, calor úmido, imersão em água oxigenada, água quente e em ácido sulfúrico, frio úmido, escarificação mecânica, embebição em nitrato de potássio, além da testemunha, determinando-se os percentuais de germinação, de sementes duras e de mortas. No segundo ensaio, sementes de O. macrocarpa e O. alata, após escarificadas, foram semeadas em substratos de areia e de papel e colocadas para germinar sob cinco combinações de luz e temperatura: luz contínua a 25ºC constante; luz contínua com temperaturas alternadas (20ºC/16h-35ºC/8h); escuro contínuo a 25ºC constante; escuro contínuo com temperaturas alternadas (20ºC/16h-35ºC/8h) e alternância de luz e temperaturas (luz/35ºC/8h-escuro/20ºC/16h). Determinaram-se o percentual e o índice de velocidade de germinação. Concluiu-se que Operculina macrocarpa apresenta sementes dormentes, destacando-se a escarificação mecânica como o método mais eficiente para a sua superação; o substrato papel, associado à temperatura de 20-35ºC e em ausência de luz, é o mais indicado para a germinação de sementes de Operculina macrocarpa e Operculina alata.

Rethinking the economics of capital mobility and capital controls

This paper reexamines the issue of international financial capital mobility, which is today's economic orthodoxy. Discussion is often framed in terms of the impossible trinity. That framing distorts discussion by representing capital mobility as having equal significance with sovereign monetary policy and control over exchange rates. It also distorts discussion by ignoring possibilities for coordinated monetary policy and exchange rates, and for managed capital flows. The case for capital mobility rests on neo-classical economic efficiency arguments and neo-liberal political arguments. The case against capital mobility is based on Keynesian macroeconomic inefficiency arguments, neo-Walrasian market failure arguments, and neo-Marxian arguments regarding distortion of the social structure of accumulation. Close examination shows the case for capital mobility to be extremely flimsy, pointing to the ideological dimension behind today's policy orthodoxy.

Neoliberalism and global capital mobility: a necessary reconsideration of textbook trade theory

Textbook theory ignores capital flows: trade determines exchange rates and specialisation. Approaches taking the effects of capital movements adequately into account are needed, and a new theory of economic policy including measures to protect the real economy from external volatility. Equilibrating textbook mechanisms cannot work unless trade-caused surpluses and deficits set exchange rates. To allow orthodox trade theory to work one must hinder capital flows from destroying its very basis, which the IMF and wrong regulatory decisions have done, penalising production and trade. A new, real economy based theory is proposed, a Neoclassical agenda of controlling capital flows and speculation.

[Bevil Gordon d'Urban] Rudd, demi-finale [du] 800 m [des Jeux olympiques d'Anvers] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 60574

Prevalence of overweight and obesity in children from urban and rural Niagara

Purpose: The influence of environment in the development of overweight and obesity is an ongoing concern. This investigation examined the influence of urbanization on the rates of childhood overweight and obesity. Method: 2167 (1090M, 1077F) grade four children from 75 schools in Ontario's Niagara Region were sampled. A sophisticated algorithm overlaying electoral boundaries, population densities, and the knowledge of community members was used to classify schools into one of three location categories: urban {N= 1588), urban fringe {N= 379), and rural (A^= 234). Each subject was measured for: height, weight, and aerobic performance (Leger). Physical activity was evaluated with the self-report Participation Questionnaire (free-time and organized sport activities), and teacher's evaluations of student activity. Overweight (overweight and obesity combined) was measured both as a continuous (BMI) and categorical variable (BMI category), to evaluate the prevalence by location. A multivariate analysis was used to test for a suppression effect. Results: BMI and BMI category did not differ significantly by location or gender, and no evidence of a gender interaction existed. According to both a linear and logistic regression, physical activity or fitness levels did not suppress the influence of location on BMI and BMI category. Age, gender, free-time activity, organized sports, fitness level, and number of siblings, were all found to significantly influence overweight. Conclusions: It is plausible that the prevalence of overweight does not differ in urban and rural children from the Niagara Region. Further investigation is recommended, examining subjects by individual location of residence, in multiple regions throughout Ontario.

An inquiry into the barriers to participation within the fitness industry for people living with mobility challenges

This qualitative study was designed to inquire about the barriers to participation within the fitness industry for people living with mobility challenges. i\n examination of the insights, stolies~ and experiences with barriers through interviews gi ven by 4 people living with mobility challenges (PMC) formed the core of the research. An analysis of the interviews from the 4 PMC informants was performed at t\\/O levels. First, a content analysis served to identify general and specific categories related to barrier issues within various fitness environments. Secondly, in-depth thematic analyses of the entries related to the insights and stories from the 4 informants which emerged from the content analysis of the data gave rise to fi ve thematic statements. From the thematic statements a fitness industry awareness protocol was created in the fonn of a statement response questionnaire. The protocol, which was given to 4 fitness assessors/trainers, \vas used to provide a snapshot of the fitness industry's readiness to work vvith disability. Throughout the process, the four PNIC informants formed a collaborati vely involved group of coresearchers, adding their voices to the narrative of the fitness-barrier experience. The result of the study suggests that barriers to participation within the fitness industry for PMC exist in various forms and levels of severity. The results also suggest that the fitness industry needs to better prepare their people and environment for working with people with physical disabilities, such as PMC, and provide a more open and positi ve environment for participation. Within the context of any fitness-related environment, recognizing that barriers to participation do exist, and acknowledging and accepting people with disabilities for who they are as indi viduals, will serve to develop a relationship where fitness practitioners and people with disabilities can work towards creating an inviting, inclusive, accessible, and barrier-free fitness environment for all.

Competing and Conflicting Land Uses at the Rural-Urban Interface: Understanding the Impacts of Residential Development on Agricultural Landscapes

Rural communities are currently undergoing rapid restructuring as globalization impacts the future viability of many small towns. Agricultural regions throughout Canada, in particular, Niagara-on-the-Lake, are forced to adapt to changes within the industry. In addition to these challenges, sprawling residential developments from nearby urban centres are changing the dynamic of this town, resulting in conflicts between the residential and agricultural land uses. This thesis explores these conflicts from the perspective of the residents and the farmers. It was found that the initial sources of conflict related to noise-generating farm activities are no longer a concern, while the use of pesticide have become a source of contention among the residents. The farmers, alternately, were found to be proactive and strived to limit the potential for conflict with adjacent residents. Lastly, it was determined that planning legislation aggravates land use conflicts within Niagara-on-the-Lake and need to better address these land use conflicts.

A Home at School: Building Stronger Indigenous People through Cultural Resurgence in an Urban Ontario Public School Context.

In this thesis, I work through the educational narratives of young Aboriginal women and men as I explore the relationship between cultural programming and student engagement. My analysis is structured through a collaborative Indigenous research project. My overarching task is to explore how a cultural support program, the Native Youth Advancement with Education Hamilton (NYA WEH) Program, offered at Sir John A. Macdonald Secondary School, located in Hamilton, Ontario, Canada, attempts to re-imagine Aboriginal education in ways that directly challenge the residential school legacy. In particular, I work to illuminate how particular forms of Aboriginal education are connected to the graduation rates of Aboriginal youth. I argue that the ways in which the NYA WEH Program navigates Native Studies curriculum, relationships, and notions of culture and tradition are significant to the engagement of Aboriginal youth. This research develops theoretical connections between the contemporary experience of Aboriginal social inequality and educational initiatives which attempt to reverse that legacy. By placing the NYA WEH Program narratives side-by-side with literature supporting Aboriginal education for Self-determination, I work to learn how to best support and encourage Aboriginal student engagement in secondary schools across Ontario.

The neoliberalization of street vending policy in Lima, Peru: the politics of citizenship. property and public space in the production of a new urban marginality

Neoliberalism is having a significant and global impact on political, social and economic life across spaces. This work illustrates how neoliberalism is attempting to change the ways in which the urban poor - particularly those that participate in street vending - use urban spaces in Lima, Peru. Using municipal policies, newspaper articles and local academic texts I argue that there is a changing marginality in Lima that is being experienced by street vendors, and currently in los canas of Lima. In particular, I discuss formalization, a neoliberal strategy in street vending policy, which is used with eradication and social assistance strategies in attempts to re-regulate street vendors.

A Qualitative Study of the Professional Experiences of Teachers With Mobility Challenges and Their Self-Perceptions of Professional Success

This qualitative investigation explored the professional experiences of 3 Ontario teachers who have mobility challenges. The study’s participants (2 male and 1 female) were Ontario teachers who have permanent physical disabilities that challenge their means of mobility. Each participant has an Ontario Certified Teaching License and has either taught or is currently teaching in an Ontario school. My primary source of data collection was a semi-structured face-to-face interview with each participant. The focus of the interview was participant perspectives. Data analysis was accomplished in 3 phases. Data analysis generated 5 prominent themes of commonality among participants: (a) independence and sacrifice, (b) living with pain, (c) barriers and obstacles, (d) the importance of communication, and (e) professional benefits and personal rewards.

Utilización de jícama (Pachyrhizus erosus L. Urban) en la elaboración de pan blanco para favorecer su calidad nutricia [por] Ma. Esperanza Castañeda Garza.

Tesis (Maestría en Ciencias con Especialidad en Alimentos) U.A.N.L.

Quantifying Capital Mobility in OECD and EU Areas.

Rapport de recherche

Sector-Specific Training and Mobility in Germany

This article studies mobility patterns of German workers in light of a model of sector-specific human capital. Furthermore, I employ and describe little-used data on continuous on-the-job training occurring after apprenticeships. Results are presented describing the incidence and duration of continuous training. Continuous training is quite common, despite the high incidence of apprenticeships which precedes this part of a worker's career. Most previous studies have only distinguished between firm-specific and general human capital, usually concluding that training was general. Inconsistent with those conclusions, I show that German men are more likely to find a job within the same sector if they have received continuous training in that sector. These results are similar to those obtained for young U.S. workers, and suggest that sector-specific capital is an important feature of very different labor markets. In addition, they suggest that the observed effect of training on mobility is sensible to the state of the business cycle, indicating a more complex interaction between supply and demand that most theoretical models allow for.