Note: Ten chapters were prepared as background for the work of the Maize Advisory Group and for input to the public symposium, held 11 March 2004, in Oaxaca as part of the CEC Article 13 study on maize and biodiversity. These chapters were later reviewed and revised prior to this release, based on comments received at the symposium and during the subsequent comment period. Responses to reviewer...

Note: Ten chapters were prepared as background for the work of the Maize Advisory Group and for input to the public symposium, held 11 March 2004, in Oaxaca as part of the CEC Article 13 study on maize and biodiversity. These chapters were later reviewed and revised prior to this release, based on comments received at the symposium and during the subsequent comment period. Responses to reviewer...

[This retracts the article on p. 1933 in vol. 10, PMID: 28408845.].

the narrow operating window between pore pressure and fracture pressure makes drilling difficult in some operations. a feasibility study of managed pressure drilling (mpd) is carried out on iran darquain oil field. the previous wells drilled in this field showed that mud returns were lost during drilling gadvan formation. the present work addresses this problem by means of surface back pressure...

Culture flasks capped with stainless-steel closures became contaminated when incubated in circulating air. Cotton plugs prevented this contamination.

It is commonly accepted that different theories of democracy imply different normative frameworks for evaluating media performance. However, it has also been argued that media and communication researchers’ engagement with broader political theories remains underdeveloped and dependent on a narrow range of sources. The aim of this article is to map out in a basic quantitative fashion how differ...

Experiments were conducted in a liquid-solid circulating fluidized bed with different viscous liquids and particles to study the hydrodynamics, average solid hold up and solid circulation rate. The effects of operating parameters, i.e., primary liquid flow rate in the riser, auxiliary liquid flow rate, total liquid flow rate and viscosity of the liquid were studied for solids of different densi...

Note: Ten chapters were prepared as background for the work of the Maize Advisory Group and for input to the public symposium, held 11 March 2004, in Oaxaca as part of the CEC Article 13 study on maize and biodiversity. These chapters were later reviewed and revised prior to this release, based on comments received at the symposium and during the subsequent comment period. Responses to reviewer...