to study the effects of carbon dioxide enrichment on morphological, nutrient absorption and yield of wheat (triticum aestivum l. cv. pishtaz) under weed competitive pressure of wild oat (avena ludovicianal.), an experiment was conducted as a split plot based on a randomized completely block design during the 2013-2014 growing season at the research field of tarbiat modares university, iran. car...

As the greenhouse cultivation industry considers new ways to reduce energy demand and increase sustainable production, global crisis constitutes a major issue. In this paper, two different sources for heating cooling root zone area of baby leafy vegetables grown in hydroponic tanks by resistors chillers, respectively, were compared order fully cover power demand. The needs first case met public...

Responses to ocean acidification in plankton communities were studied during a CO2-enrichment experiment in the Arctic Ocean, accomplished from June to July 2010 in Kongsfjorden, Svalbard (78562 N, 11536 E). Enclosed in 9 mesocosms (volume: 43.9–47.6 m3), plankton was exposed to CO2 concentrations, ranging from glacial to projected mid-next-century levels. Fertilization with inorganic nutrients...

his study aimed to investigate factors affecting the revenue share of Iranian tomato paste exporting companies. Flexible estimation method was used on a two-dimensional panel data set including 224 observations from 14 tomato paste manufacturing and exporting companies and 16 importing countries during 2005-12. Results showed that value added per employee in manufacturing or exporting companies...

one way to increase the shelf life of agriculture products is using of controlled atmosphere storages. in order to obtain the controlled gas components, an equipped cold store with cooling system and atmosphere controller system designed and constructed. the injection of co2, o2 and n2 were controlled automatically into the store by programable logic control (plc). the store was a laboratory re...

differential scanning calorimetry (dsc), temperature programmed desorption mass spectrometry (tpd-ms) and small angle neutron scattering (sans) were used to investigate co2 uptake by the wyodak coal. adsorption of carbon dioxide on wyodak coal was studied by dsc. the exotherms evident at low temperatures are associated with the uptake of co2 suggesting that carbon dioxide interacts strongly wit...

In Ethiopia, there is an urge to enhance milk production where urban and peri-urban farms play important role. Therefore, the role of such system in Greenhouse gas (GHG) emissions should be known. This study was conducted with objective estimating carbon footprint (CF) within Mekelle milkshed, Ethiopia. 50 42 dairy were selected randomly both primary secondary data collected. Lifecycle Assessme...