Results 101 to 110 of about 10,073 (308)

Responses of soil clay mineralogy in the Rothamsted Classical Experiments in relation to management practice and changing land use [PDF]

open access: yes, 2009
Changes in the clay mineralogy of soil samples collected from the Rothamsted Classical Experiments over the past ~ 150 years were examined. Comparisons were undertaken to assess the impact of (i) different fertiliser practices on the top soil and sub ...
Poulton, P.R.   +8 more
core   +1 more source

Late Holocene environmental history of Dojran, Macedonia: Investigating the interplay of imperial dynamics and climatic change

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT This study presents a high‐resolution, multi‐proxy reconstruction of environmental and land‐use change from Lake Dojran over historical times (last 2500 years), combining pollen, biomarkers, radiocarbon dating, Ottoman taxation records and other historical data.
Alessia Masi   +15 more
wiley   +1 more source

Mineralogy and Micromorphology Characteristic of Vertisol Lying on Limestone Parent Rocks at Jeneponto District of South Sulawesi Province, Indonesia

open access: yesInternational Journal of Agriculture System, 2015
The objective of this is paper is to determine the mineralogy and micromorphology characteristics of vertisol in the limestone parent rock at Jeneponto district of South Sulawesi Province, Indonesia. The pedons represent deposits of volcanoes basalt. The
Ulfiyah A. Rajamuddin   +3 more
doaj   +1 more source

Discovery of halloysite books in a ~270,000 year-old buried tephra deposit in northern New Zealand [PDF]

open access: yes, 2010
As part of a wider study examining the geomechanical properties, especially sensitivity, of sequences of Quaternary pyroclastic and associated deposits and buried soils in the landslide-prone western Bay of Plenty area near Tauranga, eastern North Island,
Lowe, David J.   +3 more
core  

Influence of organic matter, clay mineralogy, and pH on the effects of CROSS on soil structure is related to the zeta potential of the dispersed clay [PDF]

open access: yes, 2013
The high proportion of adsorbed monovalent cations in soils in relation to divalent cations affects soil structural stability in salt-affected soils. Cationic effects on soil structure depend on the ionic strength of the soil solution.
Rengasamy, Pichu   +5 more
core   +1 more source

Columnanidus calitzdorpensis ichnogen. ichnosp. nov: A new Middle Pleistocene subterranean termite trace fossil from South Africa

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Termites are landscape geo‐engineers whose nesting activities substantially modify the physical and chemical properties of soils. Fossilised termite nests commonly constitute the only identifiable evidence of ancient termite activity and represent valuable trace fossil archives for reconstructing past environments.
Miengah Abrahams   +7 more
wiley   +1 more source

Influence of pH on Soil Charge Characteristics and Cadmium Sorption in Some Noncontaminated Soils of Indian Subtropics

open access: yesThe Scientific World Journal, 2005
Concentrations of total dissolved cadmium (Cd) and activity of its free ions in soil solution are suggested to be influenced by soil pH, organic matter (OM) content, cation exchange capacity (CEC), and clay mineralogy.
Tanmoy Karak   +3 more
doaj   +1 more source

Geochemical and microbiological controls on the transport of Uranium through soil [PDF]

open access: yes, 2009
Widespread use of depleted uranium (DU) in munitions around the world has raised questions about contamination of soils, water and vegetation with uranium (U).
Stone, Dorothy Grace
core  

Interaction With Surface Spins as a Contribution to Nuclear Magnetic Relaxation of Liquids Adsorbed in Mesoporous Materials

open access: yesMagnetic Resonance in Chemistry, EarlyView.
Liquids at silica interfaces experience demixing as a consequence of their respective polarity. The distribution of liquids and their primary relaxation contributions are studied by surface modification with OD and radical moieties, respectively. ABSTRACT NMR relaxation of liquids in the presence of solid interfaces, such as silica gel or porous glass,
Carlos Mattea   +3 more
wiley   +1 more source

Microbial volatile fingerprints: potential use for soil/water diagnostics and correlation with traditional microbial parameters [PDF]

open access: yes, 2007
This project used an electronic nose (E-nose) system composed of an array of 14 nonspecific conducting polymer sensors for soil and water diagnostics, based on qualitative microbial volatile production patterns. It tested the feasibility of using soil
Bastos, Ana Catarina, Bastos , A. C.
core  

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