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Simultaneous determination of 58 major and trace elements in volcanic glass shards from the INTAV sample mount using femtosecond laser ablation-inductively coupled plasma-mass spectrometry
volcanic glass tephra LA-ICP-MS element abundance femtosecond lasert
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2017/4/10
Four volcanic glass samples on the INternational focus group on Tephrochronology And Volcanism (INTAV) sample
mount described by Kuehn et al. (2011) were analyzed to establish a new methodology for m...
SAMPLE PATH PROPERIES OF RANDOM TRANSFORMATIONS
TRANSFORMATIONS SAMPLE PATH PROPERIES
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2015/9/29
In other words where is the boundary between truly random and
almost deterministic behavior? I believe that very little randomness
is needed. For example consider the following model. Let f1 : : : f...
SAMPLE PATH PROPERTIES OF THE STOCHASTIC FLOWS
STOCHASTIC FLOWS PATH PROPERTIES
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2015/9/29
We consider a stochastic flow driven by a finite-dimensional Brownian
motion. We show that almost every realization of such a flow exhibits strong
statistical properties such as th...
On the finite sample properties of pre-test estimators of spatial models
Spatial models Spatial lag models
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2015/9/24
This paper explores the properties of pre-test strategies in estimating a linear Cliff–Ord-type spatial model when
the researcher is unsure about the nature of the spatial dependence. More speciʂ...
A fused lasso latent feature model for analyzing multi-sample aCGH data
Cancer DNA copy number False discovery rate Mutation
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2015/8/21
Array-based comparative genomic hybridization (aCGH) enables the measurement of DNA copy number across thousands of locations in a genome. The main goals of analyzing aCGH data are to identify the reg...
Remote Detection of Marine Microbes,Small Invertebrates,Harmful Algae,and Biotoxins using the Environmental Sample Processor (ESP)
Marine Microbes Small Invertebrates Harmful Algae Biotoxins using the Environmental Sample Processor
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2015/7/3
The advent of ocean observatories is creating unique opportunities for deploying novel sensor systems. We are exploring that potential through the development and application of the Environmental Samp...
Pore formation during dehydration of a polycrystalline gypsum sample observed and quantified in a time-series synchrotron X-ray micro-tomography experiment
polycrystalline gypsum sample Pore formation
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2015/1/4
We conducted an in-situ X-ray micro-computed
tomography heating experiment at the Advanced Photon
Source (USA) to dehydrate an unconfined 2.3 mm diameter
cylinder of Volterra Gypsum. We used ...
Pore formation during dehydration of a polycrystalline gypsum sample observed and quantified in a time-series synchrotron X-ray micro-tomography experiment
Pore formation during dehydration a polycrystalline gypsum sample time-series synchrotron X-ray micro-tomography experiment
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2015/1/4
We conducted an in-situ X-ray micro-computed tomography heating experiment at the Advanced Photon Source (USA) to dehydrate an unconfined 2.3 mm diameter cylinder of Volterra Gypsum. We used a purpose...
Warm molecular hydrogen in the Spitzer SINGS galaxy sample
galaxy sample H2
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2014/12/23
Results on the properties of warm molecular hydrogen in 57 normal galaxies are derived from measurements of H2 rotational transitions, obtained as part of SINGS. This study extends previous extragalac...
IDENTIFICATION OF A COMPLETE 160 μm FLUX-LIMITED SAMPLE OF INFRARED GALAXIES IN THE ISO LOCKMAN HOLE 1 deg2 DEEP FIELDS: SOURCE PROPERTIES AND EVIDENCE FOR STRONG EVOLUTION IN THE FIR LUMINOSITY FUNCTION FOR ULIRGs
starburst-active galactic nucleus (AGN) composite AGN spectral types
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2014/12/20
We have identified a complete, flux-limited (S 160>120 mJy) sample of 160 μm selected sources from Spitzer observations of the 1 deg2 Infrared Space Observatory (ISO) Deep Field region in the Lockman ...
Evaluation of a rapid, effective sample digestion method for trace element analysis of granitoid samples containing acid-resistant minerals: Alkali fusion after acid digestion
silicate digestion method trace element abundance silicate reference material alkali fusion
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2017/4/10
Alkali fusion after acid digestion method (AFAD) was used for determination by ICP-MS of twenty-five trace elements
(Rb, Sr, Y, Zr, Nb, Cs, Ba, Hf, Pb, Th, U, and rare earth elements) in four silicat...
Increase in acetate concentrations during sediment sample onboard storage: a caution for pore-water geochemical analyses
acetogen microbial community pore water marine sediment storage condition
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2017/4/11
Microbial activity in marine sediment plays an important biogeochemical role in cycling of carbon and other elements.
Acetate is a key intermediate of various microbial metabolic pathways. In this st...
Detecting mutations in mixed sample sequencing data using empirical Bayes
Detecting mutations mixed sample sequencing data empirical Bayes
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2012/11/23
We develop statistically based methods to detect single nucleotide DNA mutations in next generation sequencing data. Sequencing generates counts of the number of times each base was observed at hundre...
Local Marchenko-Pastur Law at the Hard Edge of Sample Covariance Matrices
Random matrices ovariance matrices archenko-Pastur law ensity of states elocalization
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2012/6/29
Let $X_N$ be a $N\times N$ matrix whose entries are i.i.d. complex random variables with mean zero and variance $\frac{1}{N}$. We study the asymptotic spectral distribution of the eigenvalues of the c...
Two sample tests for high-dimensional covariance matrices
High-dimensional covariance large p small n likelihood ratio test testing for gene-sets
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2012/6/21
We propose two tests for the equality of covariance matrices between two high-dimensional populations. One test is on the whole variance--covariance matrices, and the other is on off-diagonal sub-matr...