Results 81 to 90 of about 64,537 (313)
Humic acids characterization by EDXS and 13C NMR spectroscopy
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010 Determination of humic acids spectral characteristics performed fast and convenient method for their quality evaluation. Humic acids (HA) were isolated from five different soil types (Luvi-haplic Chernozem, Haplic Luvisol, Haplic Cambisol, Leptic ...
Ľubica Pospíšilová +3 more
doaj +1 more source
A model for predicting dissolved organic carbon distribution in a reservoir water using fluorescence spectroscopy [PDF]
, 2004 A number of water treatment works (WTW) in the north of England (UK) have experienced problems in reducing the dissolved organic carbon (DOC) present in the water to a sufficiently low level.
Banks, Jenny +6 more
core +3 more sources
Carbon Quantum Dots Meet Perovskite Solar Cells: A Review of Multifunctional Synergies
Carbon Energy, EarlyView.This review highlights the multifunctional role of carbon dots in perovskite solar cells. Their applications as additives and interfacial modifiers are discussed in terms of crystallization control, defect passivation, energy‐level alignment, and environmental stability.
Yagmur Su Sayin +3 more
wiley +1 more source
Use of biologically active substances in hops
Plant, Soil and Environment, 2018 In four-year experiments, hop was treated with 7 biologically active substances in two terms during vegetation: Lignohumate max (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), Lexenzym (
Pavel PROCHÁZKA +4 more
doaj +1 more source
Humic acid from Shilajit – a physico-chemical and spectroscopic characterization [PDF]
, 2009 Shilajit is a blackish–brown exudation, consisting of organic substances, metal ions and minerals, from different formations, commonly found in the Himalayan region (1000–3000 m) from Nepal to Kashmir.
ASGAR ALI +4 more
core +1 more source
ChemFoodChem, EarlyView.ABSTRACT Engineered nanomaterials (ENMs) are increasingly applied in agriculture to improve crop yield, nutrient efficiency, and food quality. This study examines the environmental transformation of ENMs, their uptake in plants, and their transfer across the agri‐food chain leading to human exposure.
Soumitra Nath
wiley +1 more source
Humic acid protein complexation [PDF]
, 2008 Interactions of purified Aldrich humic acid (PAHA) with lysozyme (LSZ) are investigated. In solution LSZ is moderately positively and PAHA negatively charged at the investigated pH values.
Koopal, L.K. +4 more
core +2 more sources
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Biostimulants are increasingly used in agriculture to promote plant growth, improve stress tolerance, and support sustainable farming practices. One common method of production is chemical hydrolysis of protein‐rich waste, such as tannery by‐products, offering an economical and eco‐friendly alternative to conventional raw materials.
Karel Kolomazník +3 more
wiley +1 more source
Учёные 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
Evaluation of Activated Carbon as a Reactive Cap Sorbent for Sequestration of PCBs in Presence of Humic Acid [PDF]
, 2009 This study investigated the interferences caused by high humic acid concentrations on the adsorption of coplanar and noncoplanar polychlorinated biphenyls (PCBs) on coconut shell activated carbon. In particular, the research focuses on the application of
Gardner, Kevin H. +4 more
core +1 more source