Etudes de mécanismes d'oxydo-réductions inorganiques

Doctorat en Sciencesinfo:eu-repo/semantics/nonPublishe

A new iodine compound: I-OH2

WHEN the pH of an I3- solution, approximately one-tenth molar in iodide, is raised to about 12, part of the I3 - initially present disappears immediately, and the remainder decomposes slowly, at a measurable rate, due to production of iodate (Fig. 1). © 1959 Nature Publishing Group.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Empowering parents for homework support

Homework renders parents frustrated and disempowered. Parents often lack sufficient guidance in order to support their children with homework. Thus parents feel disconnected from the learning process. Subsequently, they seek control within their family-centred practices. Carl Dunst’s Integrated Framework for Family Empowerment was used to identify key components of a child’s learning and development and the implications for parent involvement in homework. These components highlight important aspects within the learning process—starting with Parenting supports; Child-learning opportunities; and Family and community supports and resources. One family was selected to participate in this case study. The research was conducted at the participants’ home. The methodology consisted of qualitative research relying on personal and official documents, photos, semi-structured interviews, informal conversations, observations and a reflective journal for data collection. The experiences were documented and reported through narrative inquiry. The data analysis resulted in themes and categories. The findings revealed that effective communication is essential to strengthening parenting support with homework. Parents’ attitudes towards homework and other school requirements have a fundamental influence on how the child perceives school—this paves the way towards child-learning opportunities at home. For learning opportunities to be realised however, the child needs to develop intrinsic motivation. Furthermore, the need for family and community supports and resources requires of parents to become involved in the learning process. They should work with the teachers in finding alternative ways to support their child. Incorporating additional support strengthen interactions with the school, thus, creating a social network which assists in making informed decisions regarding the child’s learning and development.Dissertation (MEd)--University of Pretoria, 2015.tm2015Science, Mathematics and Technology EducationMEdUnrestricte

Théorie des gaz. XXVIII. — La loi des états correspondants

La loi des états correspondants est généralement considérée comme seulement approximative; son exactitude a été évaluée u quelques unités pour 100. En réalité, si elle est appliquée correctement, elle est exacte à 1/10 000 près, au moins pour un groupe de gaz; azote, oxygène, argon, néon, acide carbonique, hexafluorure de soufre. Leurs isothermes, tracées dans un système de coordonnées convenables, sont superposables avec cette précision. Elles traduisent une propriété de la matière qui dépend d'un seul paramètre, fonction de la température. Les propriétés des gaz réels, tout au moins de ceux qui suivent la loi, sont ainsi plus simples qu'on ne l'imagine en général, et les théoriciens peuvent prendre pour but le calcul a priori de ce paramètre unique

Patrimoine européen

info:eu-repo/semantics/publishe

Etude théorique et évaluation des coefficients de transport thermique dans les liquides et systèmes denses

Doctorat en Sciencesinfo:eu-repo/semantics/nonPublishe

Principes de l'iodimétrie absorptiométrique

A general method for the determination of oxidising or reducing agents has been investigated It is based on the measurement of the absorption of the spectrum of the 13 - complex Oxidizing agents may be determined by thu oxidation of iodide into I3 -, reducing agents by reduction of I3 -. For a right application of this method one must have (a) all the iodine present in the state of 13 -, (b) the iodine produced by autoxidation of the iodide ion in negligible quantity Theconstants of the chief equilibria in which 13- is involved (equilibrium with I2,I2Br-,I2Cl-, IOH) and the kinetics of the autoxidation of the iodide ion in the presence and the absence of the catalyst Cu+2 have been reinvestigated The acquned information enabled us to determine the general conditions of Applicability of this method and the realization of special analyses, The limit of detection by this method is 2.10-7 gram equivalent of oxidizing or reducing agent per liter when absorptions are measured through a 5 cm layer. © 1957.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

ARTICLES Artificial Intelligence and LINDA IN CONTEXT

How can a system that differs sharply from all currently fashionable approaches score any kind of success? Here’s how