[PDF] Top 20 Towards the thermodynamic treatment of humic substances in soils

... A THERMODYNAMIC TREATMENT Any thermodynamic approach, ...for the rational conditions of the stability field of involved substances, necessarily requires (1) precise ... See full document

... Effects of different food sources and culture medium on life history traits of Ceriodaphnia silvestrii were studied under controlled ...net of 20µm mesh size, supplied with Chlorella lacustris as ... See full document

... part of the heat generated during a forest fi re is radiated to ...soil. The nature of the changes in soil depends on both the temperatures reached at different soil ... See full document

... than in the other treatments, except in the soil without composts, indicating that the relative amounts of HA and FA in this soil type are more ...prevalence of FA ... See full document

... role in maintaining the productivity of tropical soils, providing energy and substrate for the biological activity and modifying the physical and chemical characteristics that ... See full document

... Regarding the soil organic carbon analysis, the dichromate-oxidation method (Walkley-Black) is preferred for routine purposes or when the soils have high carbonate ...contents. In this ... See full document

... results of negative effect of electrical conductivity of nutrient solution with ferrous sulfate, magnesium sulfate, zinc sulfate, ammonium sulfate and copper sulfate on the retention capacity ... See full document

... solubilise humic acid and fulvic acid: 1) extraction with a sodium hydroxide solu- tion [7-10] and 2) extraction using a combination sodium hydroxide and sodium pyrophosphate so- lution ...[11-13]. The ... See full document

... capacity of humic substances from soils managed with systems integrating crops, livestock , and ...forests. The aim of this study was to evaluate the initial performance ... See full document

... source, the classical method, ...interest in solubilizing coal through the ligninolytic microorganisms in the soil as an al- ternative procedure to obtain ...studied in greater ... See full document

... Humic substances extracted from flooded and non-flooded soils of the Amazon basin have similarly been little studied, especially in relation to their structural ...Hence ... See full document

... Organic elemental analyses and lnfrared analysis of humic substances In Amazon waters and soils were typical for humic substances except for the low content of ni[r] ... See full document

... acids, humic acids and humin) represents the stable C pool (SPACCINI et ...due the high stability and complex structure it interacts with clay and metallic cations, contributing therefore, to ... See full document

... for the alloy was determined by testing cylindrical Ø 6 x 90 mm specimens on the Gleeble 3800 ...to the specimens, and then the specimens were fixed in the chamber by means ... See full document

... ants, the use of biochar for the immobilization of radionu- clides may be ...between the im- mobilization of certain pollutants and the mobilization of others ... See full document

... spite of the apparent uniformity of soils in topography, color and vegetation their chemical, physical and biological properties can vary considerably (Santos & Vasconcellos, ... See full document

... is the most common species of emergent aquatic macrophyte in Infernão ...Lagoon. The hydrological cycle of this region is marked by high water periods, when surrounding areas are ... See full document

... results of studies on the use of FeSi5%Mg magnesium alloy in modern cored wire injection method for production of nodular and vermicular graphite cast irons were ...described. ... See full document

... are the main causes of squamous cell cancers of the upper aerodigestive ...These substances can cause multifocal carcinogenesis leading to multiple synchronous or metachronous cancers ... See full document

... ends of the tubes were sealed under water before removal to avoid oxidation of the ...sample. The tubes had holes drilled at 10 cm intervals and hermetically sealed to avoid oxidation ... See full document