Results 21 to 30 of about 15,774,786 (357)

Resolving environmental drivers of microbial community structure in Antarctic soils [PDF]

open access: yes, 2009
Antarctic soils are extremely cold, dry, and oligotrophic, yet harbour surprisingly high bacterial diversity. The severity of environmental conditions has constrained the development of multi-trophic communities, and species richness and distribution is ...
Barrett, John E.   +4 more
core   +2 more sources

EVALUATE BRICK UNITS BY ULTRASONIC WAVES

open access: yesTikrit Journal of Engineering Sciences, 2005
Wide laboratory search was done to evaluate brick units in single, and test the prisms built from brick unit by use ultrasonic waves in non-destructive test. The results show that the pulse velocity increases with increasing compressive strength and time
Zain Al-Abdin Raouf   +2 more
doaj   +1 more source

Reduced tillage, but not organic matter input, increased nematode diversity and food web stability in European long‐term field experiments [PDF]

open access: yes, 2019
Soil nematode communities and food web indices can inform about the complexity, nutrient flows and decomposition pathways of soil food webs, reflecting soil quality.
De Caceres M.   +22 more
core   +1 more source

Tillage Intensity Effects on Soil Structure Indicators—A US Meta-Analysis

open access: yesSustainability, 2020
Tillage intensity affects soil structure in many ways but the magnitude and type (+/−) of change depends on site-specific (e.g., soil type) and experimental details (crop rotation, study length, sampling depth, etc.).
M. R. Nunes, D. Karlen, T. Moorman
semanticscholar   +1 more source

Does functional soil microbial diversity contribute to explain within-site plant beta-diversity in an alpine grassland and a dehesa meadow in Spain? [PDF]

open access: yes, 2017
Questions: Once that the effects of hydrological and chemical soil properties have been accounted for, does soil microbial diversity contribute to explain change in plant community structure (i.e. within-site beta-diversity)?
Araya, Yoseph N.   +4 more
core   +2 more sources

Multifractal analysis of discretized X-ray CT images for the characterization of soil macropore structures [PDF]

open access: yes, 2010
A correct statistical model of soil pore structure can be critical for understanding flow and transport processes in soils, and creating synthetic soil pore spaces for hypothetical and model testing, and evaluating similarity of pore spaces of different ...
Caniego Monreal, Francisco   +6 more
core   +3 more sources

Soil-Structure Interaction in Nonlinear Soil [PDF]

open access: yes, 2009
A two-dimensional (2-D) model of a building supported by a semi-circular flexible foundation embedded in nonlinear soil is analyzed. The building, the foundation, and the soil have different physical properties. The model is excited by a half-sine SH wave pulse, which travels toward the foundation.
openaire   +3 more sources

Pile Load Capacity – Calculation Methods

open access: yesStudia Geotechnica et Mechanica, 2015
The article is a review of the current problems of the foundation pile capacity calculations. The article considers the main principles of pile capacity calculations presented in Eurocode 7 and other methods with adequate explanations.
Wrana Bogumił
doaj   +1 more source

The Reverse Transcriptases Associated with CRISPR-Cas Systems

open access: yesScientific Reports, 2017
CRISPR (clustered regularly interspaced short palindromic repeats) and associated proteins (Cas) act as adaptive immune systems in bacteria and archaea.
Nicolás Toro   +2 more
doaj   +1 more source

Evaluating AquaCrop Model for Winter Wheat under Various Irrigation Conditions in Turkey

open access: yesJournal of Agricultural Sciences, 2018
Farming winter wheat in Central Anatolia of Turkey traditionally is rainfed. Crop yields are frequently affected in this region because of the drought events of varying severity.
Sema Kale, Sevinç Madenoğlu
doaj   +1 more source

Home - About - Disclaimer - Privacy