Results 31 to 40 of about 11,355 (259)

The effect of pH on the binding of heavy metal ions with humic substances and hymatomelanic acids of peats

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2017
The values of the dissociation constants (–COOH and –OH) of humic substances and hymatomelanic acids have been determined by the potentiometric titration method. It has been shown that hymatomelanic acids are enriched in phenolic groups compared with the
E.D. Dmitrieva   +3 more
doaj  

Methods for Obtaining Humus Substances: Advantages and Disadvantages

open access: yesApplied Sciences
The paper reviews the patent descriptions of methods for obtaining humic substances and the procedures used in their industrial production. Selected humus substances, obtained using three different methods, were also examined.
Anna M. Anielak   +4 more
doaj   +1 more source

Humic Substances Alter Ammonia Production and the Microbial Populations Within a RUSITEC Fed a Mixed Hay – Concentrate Diet

open access: yesFrontiers in Microbiology, 2018
Humic substances are a novel feed additive which may have the potential to mitigate enteric methane (CH4) production from ruminants as well as enhance microbial activity in the rumen.
Stephanie A. Terry   +5 more
doaj   +1 more source

The Interaction Effect of Humic Substances and Mineral Phosphorus Fertilization on Forage Yield and some Macronutrients Uptake of Triticale under different Soil Salinity Levels. [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2019
Salinity becomes one of the most important and serious agricultural problems. Furthermore, it is an ever-present impendence to crop productivity, especially in the countries where irrigation is a determining factor for agricultural activity.
M. El-Metwally   +3 more
doaj   +1 more source

Boosting strawberry yield and fruit sweetness with humic substances and biofertilizer in soilless cocopeat-based culture

open access: yesJurnal Ilmiah Pertanian, 2023
Farmers usually apply more chemical fertilizers to enhance the yield of strawberries in soilless culture. Humic substances and biofertilizers are now considered essential nutrient sources in sustainable agriculture.
Reginawanti Hindersah   +5 more
doaj   +1 more source

Hydrothermal Humification of Biomass for Circular Carbon Management in Sustainable Agro‐Ecosystems

open access: yesAdvanced Science, EarlyView.
This article provides a comprehensive overview of biomass hydrothermal humification for building sustainable agro‐ecosystems. It examines the chemical transformation mechanisms and the functional benefits of the produced humic acids in soil remediation.
Ziyun Liu   +4 more
wiley   +1 more source

Atmospheric HULIS: How humic-like are they? A comprehensive and critical review [PDF]

open access: yesAtmospheric Chemistry and Physics, 2006
A class of organic molecules extracted from atmospheric aerosol particles and isolated from fog and cloud water has been termed HUmic-LIke Substances (HULIS) due to a certain resemblance to terrestrial and aquatic humic and fulvic acids.
E. R. Graber, Y. Rudich
doaj  

CHANGES IN STRUCTURE AND CONTENT HUMIC SUBSTANCES

open access: yesTransactions of the VŠB: Technical University of Ostrava, Safety Engineering Series, 2016
The paper deals with the process of thermal degradation of humic substances in soil samples exposed to increased temperature. To determine the basic properties of humic substances, humic and fulvic acids are used conventional fractionation chemical ...
Maroš SIROTIAK, Alica BARTOŠOVÁ
doaj   +1 more source

Application of Humic Substances in Agricultural Industry

open access: yesAgronomy, 2022
Increasing agricultural productivity and, in particular, the productivity of livestock is one of the primary tasks in the present stage of development of society.
Olga Bezuglova, Aleksandr Klimenko
doaj   +1 more source

Trophic Diversity in Duckweed: Mixotrophy, More Than the Sum of its Extremes

open access: yesAdvanced Science, EarlyView.
In the context of rising DOC in aquatic environments, mixotrophic duckweed may impact carbon cycling by acting as either a carbon sink, as they absorb CO2 through photosynthesis, or a carbon source, as they release CO2 through respiration of absorbed DOC, which depends on DOC concentration, light availability, temperature, and other environmental ...
Zuoliang Sun   +5 more
wiley   +1 more source

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