نتایج جستجو برای: humic acid rejection
تعداد نتایج: 783239 فیلتر نتایج به سال:
We examined the molecular-level interactions of aromatic compounds with a humic acid that was extensively characterized with one- and two-dimensional nuclear magnetic resonance (NMR) spectroscopy. Interactions of target compounds were evaluated by monitoring their NMR relaxation properties. Solid-state NMR revealed that the humic sample contains paraffinic carbon (31%), substituted aliphatic ca...
The biological and chemical potential for electron shuttling via humic acids was evaluated by analyzing the depth distribution of humic-acid-reducing and iron-reducing bacteria in a freshwater sediment, and correlating it to the redox characteristics of humic acids and iron. Physicochemical analysis of profundal sediments of Lake Constance revealed a distinct stratification, with oxygen respira...
Increasingly, products containing humic substances are appearing in the turf industry market claiming to reduce water and fertilizer use by increasing soil moisture and nutrient availability. Humic acid is the most common humic substance that has been studied, but results have been highly variable (Cooper et al.; 1998).The response of humic acid is difficult to interpret due to confounding effe...
Salinity is one of the most brutal environmental stresses limiting the productivity of agricultural crops. In order to determine the effect of humic acid on some morphological and physiological characteristics and uptake of elements by strawberry (Fragaria ananassa Duch. cv. Sabrina) under salinity stress, a greenhouse factorial experiment was conducted with three factors including two treatmen...
Humic acid by binding to biotoxin, can vary their toxicity and mobility at different environments. Therefore, the interaction between nanoparticles and humic acid is considered environmental point of view specially. The objective of this study was investigation of ZnO nanoparticle toxicity on rapeseed at germination growing stage, and also study of the nanoparticle toxicity reduction by humic a...
In recent years, excessive use of chemical fertilizers and lack of organic fertilizers caused to reduce the rate of soil organic matter in Iran. The increased use of chemical fertilizers in agriculture causes environmental problems such as soil physical degradation and soil nutrient imbalances. This study was conducted to investigate the effects of foliar and soil applications of humic acid on ...
This study was carried out to investigate the effect of Humic acid and micronutrient nano fertilizers on rainfed chickpea response under field conditions located in Kamyaran-Kurdistan during 2015-2016 year. The experiment was split plots in a randomized complete block design with three replications. The main factor was foliar application of Humic acid in three levels including (control, four ...
Mitigation of Humic Acid Inhibition in Anaerobic Digestion of Cellulose by Addition of Various Salts
Humic compounds are inhibitory to the anaerobic hydrolysis of cellulosic biomass. In this study, the impact of salt addition to mitigate the inhibitory effects of humic compounds was investigated. The experiment was conducted using batch tests to monitor the anaerobic hydrolysis of cellulose in the presence of humic acid. Sodium, potassium, calcium, magnesium and iron salts were tested separate...
to study the impact of growth factor bacteria , humic acid and alga extract in drought stress condition a test is established in form of completely random blocks and spilt plot in 4 replications in a field in mahallat in arak province in 1389. two primary plots including irrigation and stress and secondary plots including growth factor bacteria ,humic acid and alga extract, ascophylu...
in a sustainable agriculture system, application of the fertilizers which are nature friendly and suitable for plants is essential. this becomes more important when dealing with medicinal plants. therefore, a factorial experiment in a randomized complete block design with three replications was set up in the 2012-2013 on nigella sativa l. treatments were nanofertilizer (pharmks®) (at 2 levels ...
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