Oilfield Review Summer 2011: 23, no. 2. Copyright © 2011 Schlumberger. For help in preparation of this article, thanks to Nicholas Drenzek, Cambridge, Massachusetts, USA. FLAIR is a mark of Schlumberger. Rock-Eval is a mark of the Institut Français du Pétrole. Rock-Eval 6 is a mark of Vinci Technologies SA. Every oil or gas play originates from source rock. The viability of each play—convention...

Introduction In two studies we conducted, untutored Grade 7 students produced solutions to a design-and-make task in ways significantly different than ones prescribed by many textbooks and theories about learning to design. We found that novice designers (a) sequence the subprocesses of designing quite differently than the prescribed models, (b) do not generate several possible solutions and ch...

The field of technology education is changing very rapidly. Nationally, more and more middle and secondary schools are converting traditional industrial arts programs to contemporary technology education programs. One of the major changes is the use of modular technology systems, also called modular technology education environments. Modular technology systems are now used in many of the middle...

Information and communication technology (ICT) is playing an increasingly influential role in reshaping trade, growth, employment and production in large parts of the world. ICT presents unprecedented opportunities to combat poverty by increasing income, opening markets and providing a channel through which the voices of the poor can be heard. One of the world’s main challenges is to broaden th...

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abstract in order to study the effect of different aqueous shoot extracts of four medicinal plants consist of: basil (ocimum basilicum l.), jimson weed (datura stramonium l.), summer savory (satureja hortensis l.) and meliaceae (melia azedarach l.) on seed germination and seedling characteristics of wild oat an experiment was conducted at faculty of agriculture, ferdowsi university of mashhad o...

PURPOSE Evidence suggests that adolescents gain more weight during the summer break than they do during the school year, and that participation in the summer school program is beneficial in maintaining their healthy lifestyle. It is known that obesity and physical fitness in adolescents can be affected by their socio-economic and psychological status, especially during a long school break. The ...

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introduction: the main goal of education is learning and change in behavior which has been revolutionized in the 21st century due to the rapid and widespread changes in science. the traditional approach to education does no longer meet the learners’ needs, necessitating new changes in educational curricula. this study was designed to determine the factors influencing learning in the 21st centur...