Results 251 to 260 of about 297,362 (295)

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Plant beta-turnover rather than nestedness shapes overall taxonomic and phylogenetic beta-diversity triggered by favorable spatial-environmental conditions in large-scale Chinese grasslands. [PDF]

Front Plant Sci
Yao Z, Xin Y, Ma Z, Zhao L, Mu W, Guo J, Ali A.   +6 more
europepmc   +1 more source

The variation of tree beta diversity across a global network of forest plots

Global Ecology and Biogeography, 2012
Aims: With the aim of understanding why some of the world's forests exhibit higher tree beta diversity values than others, we asked: (1) what is the contribution of environmentally related variation versus pure spatial and local stochastic variation to ...
Miquel De Cáceres, Pierre Legendre, Renato Valencia   +2 more
exaly   +2 more sources

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Beta-Diversity in Tropical Forests

Science, 2002
In their Perspective, Duivenvoorden and colleagues discuss an analysis of the similarity in species composition between different regions of Amazonian and Panamanian tropical forests ( Condit et al.).
Kalle, Ruokolainen, Hanna, Tuomisto
  +6 more sources

How Should Beta-Diversity Inform Biodiversity Conservation? [PDF]

Trends in Ecology and Evolution, 2016
To design robust protected area networks, accurately measure species losses, or understand the processes that maintain species diversity, conservation science must consider the organization of biodiversity in space.
Jacob B Socolar, James J Gilroy, William E Kunin   +2 more
exaly   +2 more sources

Multivariate dispersion as a measure of beta diversity

Ecology Letters, 2006
AbstractBeta diversity can be defined as the variability in species composition among sampling units for a given area. We propose that it can be measured as the average dissimilarity from individual observation units to their group centroid in multivariate space, using an appropriate dissimilarity measure.
Marti J Anderson, Kari E Ellingsen, Brian H Mcardle   +2 more
exaly   +5 more sources

Beta diversity reconsidered

Ecological Research, 2013
Abstract A simple analytical procedure to test for differences in beta diversity among sets of plots has been recently presented. Here, we describe an improved randomization procedure that replaces the one previously proposed. This procedure consists of shuffling within‐group dissimilarities among groups and disregarding between‐group
Giovanni Bacaro, Margherita Gioria, RICOTTA, Carlo   +2 more
openaire   +4 more sources

Quantifying evenness and linking it to diversity, beta diversity, and similarity

Ecology, 2019
AbstractAn enormous number of measures based on different criteria have been proposed to quantify evenness or unevenness among species relative abundances in an assemblage. However, a unified approach that can encompass most of the widely used indices is still lacking. Here, we first present some basic requirements for an evenness measure.
Anne Chao, Carlo Ricotta
openaire   +2 more sources