Part Form Errors Predicted from Machine Tool Performance Measurements

Machine tool performance testing, as defined by IS0 230 and ANSI B5.54 has been successfully used to maintain and improve the accuracy and repeatability of production-level machine tools. In this study, a controlled series of experiments have been used to test the efficacy of these performance tests in the prediction of part form errors. Results are shown for flatness, squareness, position, and profile tolerances. The experimental results suggest that standard machine tool performance tests can also be used to predict the “best-case” tolerances that can be achieved for particular part features

High-to-low CO2 acclimation reveals plasticity of the photorespiratory pathway and indicates regulatory links to cellular metabolism of Arabidopsis

Background: Photorespiratory carbon metabolism was long considered as an essentially closed and nonregulated pathway with little interaction to other metabolic routes except nitrogen metabolism and respiration. Most mutants of this pathway cannot survive in ambient air and require CO 2-enriched air for normal growth. Several studies indicate that this CO 2 requirement is very different for individual mutants, suggesting a higher plasticity and more interaction of photorespiratory metabolism as generally thought. To understand this better, we examined a variety of high- and low-level parameters at 1% CO 2 and their alteration during acclimation of wild-type plants and selected photorespiratory mutants to ambient air. Methodology and Principal Findings: The wild type and four photorespiratory mutants of Arabidopsis thaliana (Arabidopsis) were grown to a defined stadium at 1% CO 2 and then transferred to normal air (0.038% CO 2). All other conditions remained unchanged. This approach allowed unbiased side-by-side monitoring of acclimation processes on several levels. For all lines, diel (24 h) leaf growth, photosynthetic gas exchange, and PSII fluorescence were monitored. Metabolite profiling was performed for the wild type and two mutants. During acclimation, considerable variation between the individual genotypes was detected in many of the examined parameters, which correlated with the position of the impaired reaction in the photorespiratory pathway. Conclusions: Photorespiratory carbon metabolism does not operate as a fully closed pathway. Acclimation from high to low CO 2 was typically steady and consistent for a number of features over several days, but we also found unexpected short-term events, such as an intermittent very massive rise of glycine levels after transition of one particular mutant to ambient air. We conclude that photorespiration is possibly exposed to redox regulation beyond known substrate-level effects. Additionally, our data support the view that 2-phosphoglycolate could be a key regulator of photosynthetic-photorespiratory metabolism as a whole. © 2012 Timm et al

Cambio demográfico, migración y salud reproductiva : el papel de las mujeres senegalesas en la constitución de las familias

En aquest paper presentem en primer lloc els trets més característics de la transició de la nupcialitat i de la fecunditat a Senegal fent referència a alguns indicadors de la salut sexual i reproductiva de les dones. A continuació presentem els indicadors que resumeixen la biografia migratòria, nupcial i reproductiva d'un col·lectiu de dones senegaleses que han immigrat a Catalunya i que estan construint les seves famílies a cavall de dues cultures i de dos continents, fent referència entre altres coses a la poligamia, al lloc de naixement i residència dels seus fills i a la utilització de mètodes de planificació familiar. Acabem la comunicació amb algunes reflexions sobre el paper de les dones com agents actius en les decisions en materia de sexualitat i reproducció, en una societat que no és la seva, de la qual agraeixen els serveis de salut públics però sense deixar de banda la seva pròpia concepció de la família i de la salut.En este artículo presentamos en primer lugar los elementos más rellevantes de la transición de la nupcialidad y de la fecundidad en Senegal haciendo referencia a algunos indicadores de salud sexual y reproductiva de las mujeres. A continuación presentamos los indicadores que resumen la biografía migratoria, nupcial y reproductiva de un colectivo de mujeres de Senegal que han inmigrado a Cataluña y que están formando sus familias en el contexto de dos culturas y de dos continentes, haciendo referencia entre otras cosas a la poligamia, al lugar de nacimiento y residencia de sus hijos y a la utilización de métodos de planificación familiar. Finalizamos la comunicación con algunas reflexiones sobre el papel de las mujeres como agentes activos en las decisiones en materia de sexualidad y reproducción, en una sociedad que no es la suya propia, de la que agradecen los servicios de salud públicos pero sin olvidar su propia concepción de la familia y de la salud.In this paper we present the main characteristics from Senegal's nuptuality and fertility transition according to a group of measures related to women's sexual and reproductive health. We then show those indicators that summarise Senegal's women biography in terms of their migration, nuptuality and reproduction for those who have immigrated to Catalunya and have to raise a family between two cultures and two continents. In this way the article makes reference, among other things, to polygamy, the birthplace and residence of their offspring, as well as the existence of family planning. Lastly, we finish this paper with some ideas about the role of Senegal's women making sexual and reproduction decisions in a different society where they can obtain public health services while keeping their own approach to family and health issues

Sexual crime and circles of support and accountability

This book offers a collection of original contributions to current research available on Circles of Support and Accountability (CoSA). by engaging with current literature and unpublished research in the field. The book explores the role of narrative identity in desistance from sexual crime and how CoSA maps onto this, as well as a history of CoSA across the world. The text then moves into an empirical section, reporting on some unpublished findings, including an evaluation of a new prison-based CoSA in the UK. Lastly, the experiences of service users and the influence of media perceptions are explored, offering a space for he 'unheard voices' as well as consideration of future directions for practitioners. The book is relevant not just to psychologists, criminologists, social workers and students, but to practitioners and the general public with an interest in learning about CoSA