Humus Content and Composition in the Water-Stable Aggregates of Dark Gray Forest Soils [PDF]
, 1997 Humus distribution and composition in different fractions of water-stable soil aggregates isolated from the samples of the humus horizon of dark gray forest soil were studied by the Han method.
Perepelkina E., Shinkarev A.
core
Soil Fragmentation and Friability. Effects of Soil Water and Soil Management [PDF]
, 2002 Soil fragmentation is a primary aim in most tillage operations in order to create a soil environment favourable for crop establishment and growth. Soils vary around the world from those exhibiting a self-mulching nature to those of a hardsetting nature ...
Munkholm, Lars J.
core +1 more source
Effects of afforestation on soil structure formation in two climatic regions of the Czech Republic
Journal of Forest Science, 2015 The aim of this study was to determine the effect of agricultural land afforestation on soil characteristics. Two sites in two regions of the Czech Republic were evaluated, at lower as well as higher submountain elevations: in the regions of the Orlické ...
V. Podrázský +5 more
doaj +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Unfounded Sets and Well-Founded Semantics of Answer Set Programs with Aggregates [PDF]
, 2011 Logic programs with aggregates (LPA) are one of the major linguistic extensions to Logic Programming (LP). In this work, we propose a generalization of the notions of unfounded set and well-founded semantics for programs with monotone and antimonotone ...
Alviano, Mario +4 more
core +2 more sources
Структурни характеристики на Червеноцветни почви от североизточната част на Софийско поле
Почвознание, агрохимия и екология, 2015 The study presents basic structural characteristics of ten profiles of Reddish soils (Haplic Leptosols, Haplic Cambisol, Haplic and Cutanic Luvisols with Chromic or Rhodic characteristics) of different formation stages and parent materials, located in ...
ГЕОРГИ ДИМИТРОВ +3 more
doaj
Effect of intercropping Lolium perenne in Ziziphus jujuba orchards on soil quality in the canopy [PDF]
PeerJThe cultivation of Lingwu jujube traditionally employs clean tillage, leaving substantial gaps between rows and exposing almost 60% of the orchard to the elements.
Yao Ma +3 more
doaj +2 more sources
Impact of Effective Microorganisms (EM) Application on the Physical Condition of Haplic Luvisol
Agronomy, 2020 The study set out to determine changes in the soil air-water properties, the water-stable aggregate share and organic carbon content as effects of a five-year application of effective microorganisms (EM-A).
Jacek Pranagal +2 more
doaj +1 more source
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
Aggregates reduce transport distance of soil organic carbon: are our balances correct? [PDF]
, 2014 The effect of soil erosion on global carbon cycling, especially as a source or sink for greenhouse gases, has been the subject of intense debate. The controversy arises mostly from the lack of information on the fate of eroded soil organic carbon (SOC ...
Y. Hu +3 more
core +2 more sources