We conducted reversed deliquescence experiments in saturated NaCl–NaNO3 – H2O, KNO3 – NaNO3 – H2O, and NaCl–KNO3 – H2O systems from 90 to 120 °C as a function of relative humidity and solution composition. NaCl, NaNO3 , and KNO3 represent members of dust salt assemblages that are likely to deliquesce and form concentrated brines on high-level radioactive waste package surfaces in a repository e...

We conducted reversed deliquescence experiments in saturated NaCl–NaNO3 – H2O, KNO3 – NaNO3 – H2O, and NaCl–KNO3 – H2O systems from 90 to 120 °C as a function of relative humidity and solution composition. NaCl, NaNO3 , and KNO3 represent members of dust salt assemblages that are likely to deliquesce and form concentrated brines on high-level radioactive waste package surfaces in a repository e...

Use of saline water for irrigation has shown considerable promise. However, its effect on the solubility and bioavailability of native soil nutrients is not well understood. This study was conducted to evaluate the effects of salinity on the behavior of zinc(Zn) in calcareous soils. The soil samples with different physiochemical properties were collected from four locations in Khorasan province...

most seeds of medicinal plants due to ecological adaptation to environmental conditions have several types of dormancy. hence, it's necessary to recognize ecological factors that affect dormancy and provide optimum conditions for germination in medicinal plant species. thirty seed lots were used to estimate germination and dormancy of medicinal plants. treatments were kno3, (2%) and scarificati...

The temperature programmed desorption of nitric oxide, NO, and nitrogen dioxide, NO2, during the 302 nm photolysis of KNO3-doped, spray-frozen ice layers was investigated using two-photon laser-induced NOx fluorescence detection in the range – 35 ≤ T/oC ≤ 0. Upon applying steady illumination, and a 0.67 °C min heating ramp to frozen KNO3 solutions, NO2 begins to evolve at increasing rates, whil...

augment of germination rate is important in seedling establishment and crop yield. a set of study in laboratory & field conditions at agronomy department of university of tehran was conducted during 2004-2005. in lab. experiment the effects of seed priming was evaluated on germination indices (germination percentage and rate) of chickpea genotypes in a factorial experiment of 4×3×2 arranged in ...

A dormência consiste no processo em que um ou mais mecanismos de bloqueio limitam a germinação da semente, sendo necessário estímulos externos. Mouriri cearensis Huber, conhecida popularmente como “manipuçá”, é uma espécie endêmica e nativa do Brasil, possuindo ocorrências confirmadas apenas Norte Nordeste brasileiro. O objetivo presente trabalho foi avaliar diferentes métodos físicos químicos ...

Heavy metals determination in manures provides benefi cial information to predict the availability and the potential contamination of environment. Therefore, a study was carried out to investigate heavy metals changes in livestock manure during a co-composting process. The metals were stepwise fractionated into exchangeable, adsorbed, organically bound, carbonate precipitated and residual forms...