Crystal size distribution (CSD) in metamorphic rocks provide fundamental information about crystal nucleation and growth rate, growth time and the degree of overstepping. CSD data for garnet, staurolite, kyanite and andalusite crystals from the aureole demonstrate that the earliest formed of these minerals, garnet, has the highest population density and the shortest growth time. The last formed...

net-screen covered greenhouses operating on natural ventilation are used as a sustainable approach for closed-field cultivation of fruits and vegetables and to eliminate insect passage and the subsequent production damage. the objective of this work was to develop a real-time assessment framework for evaluating air-temperature inside an insect-proof net-screen greenhouse in tropical lowlands of...

to determine the threshold of photoperiodism and culmulative thermal time related to bulbing and growth analysis of safid behbehan, ghermez iranshahr and primavera onion cultivars an experiment was conducted at behbahan agricultural research station for a year (2006-2007) based on a randomized complete block design of four replications. seeds were sown in nursery in late october and seedlings t...

Using the parameter of the number of tumor cells necessary to produce s.c. tumors in allogeneic animals at varying intervals after antigenic stimulation, immunity was found to be in force as early as 2 days after primary antigenic stimulation. It reached a peak at 8-10 days and had largely subsided by the end of a month. This method was also applied to the quantitative study of the onset, degre...