Results 121 to 130 of about 4,826,497 (302)

The Homo floresiensis Controversy

open access: yesHayati Journal of Biosciences, 2007
A completely new and unexpected quasi human species, Homo floresiensis, nicknamed the Hobbit, was described in 2004 from Liang Bua, a cave in Flores. Like many important new contributions to the human fossil record in the past, many commentators refused ...
COLIN GROVES
doaj   +3 more sources

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

Acid-base properties and structons: towards a structural model for predicting the thermodynamic properties of silicate melts

open access: yesAnnals of Geophysics, 2005
Phase equilibrium relationships in igneous systems can be estimated using empirical mathematical models based on multi-component regular solution formulae.
D. G. Fraser
doaj   +1 more source

Moment free energies for polydisperse systems

open access: yes, 2000
A polydisperse system contains particles with at least one attribute $\sigma$ (such as particle size in colloids or chain length in polymers) which takes values in a continuous range.
Cates, Michael E   +2 more
core   +1 more source

Understanding Postdeposition Treatments of Hole‐Transporting Self‐Assembling Molecules for Perovskite/Silicon Tandem Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
The influence of postdeposition treatments on the formation of self‐assembling (mono)layers commonly utilized as hole transport layers in perovskite‐based solar cells is thoroughly investigated. The implementation of a washing step and an annealing step at temperatures exceeding the current literature standards leads to an enhanced layer quality and ...
Jann B. Landgraf   +14 more
wiley   +1 more source

Systematic Reduction of the Detailed Kinetic Mechanism for the Combustion of n-Butane

open access: yesJournal of Chemistry, 2016
A systematic approach for mechanism reduction was demonstrated to generate a skeletal and reduced mechanism for the oxidation of n-butane. First, a skeletal mechanism, including 89 species and 440 elementary reactions, was derived from a 230-species ...
Chunhui Liu, Zhengxing Zuo, Huihua Feng
doaj   +1 more source

Complex dynamics in coevolution models with ratio-dependent functional response

open access: yes, 2009
We explore the complex dynamical behavior of two simple predator-prey models of biological coevolution that on the ecological level account for interspecific and intraspecific competition, as well as adaptive foraging behavior.
Bascompte   +48 more
core   +1 more source

Fluorophobic Effect Enables Selective Detection of PFAS in Water with Electrolyte‐Gated Organic Transistors

open access: yesAdvanced Functional Materials, EarlyView.
PerFluoroAlkyl Substances (PFAS) are responsible of major and persistent environmental pollution worldwide. This work demonstrates an ultra‐sensitive sensor for PFAS based on an organic transistor whose gate is functionalized with a binary self‐assembled monolayer containing a perfluorinated molecule.
Rian Zanotti   +8 more
wiley   +1 more source

Ergodicity and Slowing Down in Glass-Forming Systems with Soft Potentials: No Finite-Temperature Singularities

open access: yes, 2008
The aim of this paper is to discuss some basic notions regarding generic glass forming systems composed of particles interacting via soft potentials. Excluding explicitly hard-core interaction we discuss the so called `glass transition' in which super ...
E. Donth   +10 more
core   +2 more sources

Unraveling Mixed‐Defect Transformations and Passivation Dynamics in Silicon Heterojunction Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
Defects in materials coexist in multiple forms, undergo dynamic transformations, and influence the material properties. Here, the dynamic transformations of passivation‐related defects in silicon heterojunctions are revealed through the decomposition of dual‐phase capacitance transients.
Do Hoe Kim   +17 more
wiley   +1 more source

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