Results 31 to 40 of about 5,257,958 (296)

A transference principle for general groups and functional calculus on UMD spaces [PDF]

open access: yes, 2008
We prove a transference principle for general (i.e., not necessarily bounded) strongly continuous groups on Banach spaces. If the Banach space has the UMD property, the transference principle leads to estimates for the functional calculus of the group ...
Haase, Markus
core   +1 more source

Fire and Rhizosphere Effects on Bacterial Co-Occurrence Patterns

open access: yesMicroorganisms, 2023
Fires are common in Mediterranean soils and constitute an important driver of their evolution. Although fire effects on vegetation dynamics are widely studied, their influence on the assembly rules of soil prokaryotes in a small-scale environment has ...
Effimia M. Papatheodorou   +2 more
doaj   +1 more source

Can ecosystem properties be fully translated into service values? an economic valuation of aquatic plant services [PDF]

open access: yes, 2011
Ecological Applications 21. 5 (2011): 3083-3103 copyright by the Ecological Society of AmericaWe carried out an integrated analysis of ecosystem services in the Doñana social-ecological system (southwestern Spain), from the providers (different aquatic ...
Díaz, Sandra   +3 more
core   +3 more sources

Introduction of functional groups on polyethylene surfaces by a carbon dioxide plasma treatment [PDF]

open access: yes, 1995
Poly(ethylene) (PE) films were treated with a carbon dioxide (CO2) plasma to study the formation of oxygen-containing functional groups at the surface. Modified and nonmodified films were characterized by X-ray photoelectron spectroscopy (XPS) and water ...
Feijen, Jan   +3 more
core   +2 more sources

Combined Use of Charcoal, Sago Bark Ash, and Urea Mitigate Soil Acidity and Aluminium Toxicity

open access: yesAgronomy, 2021
Highly weathered tropical acidic soils are characterized by low pH, low organic matter, and aluminium and iron toxicity. These factors pose a challenge to achieving sustainable agriculture.
Nur Hidayah Hamidi   +3 more
doaj   +1 more source

Cluster functional renormalization group [PDF]

open access: yesPhysical Review B, 2014
Functional renormalization group (FRG) has become a diverse and powerful tool to derive effective low-energy scattering vertices of interacting many-body systems. Starting from a non-interacting expansion point of the action, the flow of the RG parameter Lambda allows to trace the evolution of the effective one-particle and two-particle vertices ...
Reuther, Johannes, Thomale, Ronny
openaire   +3 more sources

Designer molecular probes for phosphonium ionic liquids [PDF]

open access: yes, 2010
Investigations into the extent of structuring present in phosphonium based ionic liquids (ILs) have been carried out using photochromic molecular probes.
Armand   +46 more
core   +1 more source

Assessment of Earthworm Services on Litter Mineralisation and Nutrient Release in Annual and Perennial Energy Crops (Zea mays vs. Silphium perfoliatum)

open access: yesAgriculture, 2023
Abundant and functionally diverse earthworm communities in perennials deliver ecosystem services like increasing nutrient availability by incorporating organic matter.
Lena Wöhl   +4 more
doaj   +1 more source

Amending Potassic Fertilizer with Charcoal and Sago (Metroxylon sagu) Bark Ash to Improve Potassium Availability in a Tropical Acid Soil

open access: yesAgronomy, 2021
In Ultisols and Oxisols, potassium (K) in the soil solution is leached from the rhizosphere before it interacts with soil colloids, or exchanged with other cations at the exchange sites of the soils because of the abundance of kaolinite clay minerals ...
Puvan Paramisparam   +5 more
doaj   +1 more source

Micro-Structured Polydopamine Films via Pulsed Electrochemical Deposition

open access: yesNanomaterials, 2019
Polydopamine (PDA) films are interesting as smart functional materials, and their controlled structured formation plays a significant role in a wide range of applications ranging from cell adhesion to sensing and catalysis.
Jing Lin   +3 more
doaj   +1 more source

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