Results 51 to 60 of about 264,406 (306)

Global Soil Organic Carbon Estimates and the Harmonized World Soil Database [PDF]

open access: yes, 2011
Global estimates of soil organic carbon stocks have been produced in the past to support the calculation of potential emissions of CO2 from the soil under scenarios of change land use/cover and climatic conditions (IPCC, 2006), but very few global ...
HIEDERER Roland, KÖCHY Martin
core   +1 more source

PEDO-TRANSFER FUNCTIONS FOR ESTIMATING SOIL BULK DENSITY IN CENTRAL AMAZONIA

open access: yesRevista Brasileira de Ciência do Solo, 2015
Under field conditions in the Amazon forest, soil bulk density is difficult to measure. Rigorous methodological criteria must be applied to obtain reliable inventories of C stocks and soil nutrients, making this process expensive and sometimes unfeasible.
Henrique Seixas Barros   +1 more
doaj   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

Bulk Density Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to measure the bulk density of each horizon in a soil profile. In the field, students collect three soil samples from each horizon in a soil profile using a container with a measured volume.
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

Bulk soil properties as determinants of the compression strength of puddled lowland paddy soils in Sri Lanka

open access: yesTropical Agricultural Research, 2015
Soil strength/penetration resistance of lowland puddled soil is an important parameter for designing farm machinery. This study was aimed to estimate the overall penetration resistance of lowland puddled soils through the assessment of bulk soil ...
G.V.T.V. Weerasooriya   +2 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

Structure of clay topsoil affected by tillage intensity [PDF]

open access: yes, 2006
On the clay loam soil in 0-0,05 m layer, the average dry bulk density of ploughed soil was greater than that of reduced tilled soils. This was probably due to the higher organic matter content of reduced tilled plots. On the clay soil, the differences in
Alakukku, L.
core  

Effects of tillage on soil physical properties and root growth of maize in loam and clay in central China

open access: yesPlant, Soil and Environment, 2013
Subsoil compaction can result in unfavourable soil physical conditions and hinder the root growth of maize. The effects of deep tillage and conventional tillage on soil physical properties and root growth of maize were studied during 2010-2011 at two ...
B. Ji, Y. Zhao, X. Mu, K. Liu, C. Li
doaj   +1 more source

Evaluation of the Performance of Locally Developed Combine Equipment Used for Several Agricultural Operations at Once

open access: yesمجلة ديالى للعلوم الزراعية, 2023
A field experiment was conducted to evaluate the performance of locally developed combine equipment used for several agricultural operations at once in a silt clay loam soil texture. Three factors were used.
Shaimaa Sami Dowad   +1 more
doaj   +1 more source

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

open access: yesAdvanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du   +4 more
wiley   +1 more source

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