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Friction imprint effect in mechanically cleaved BaTiO3 (001)

September 28, 2014

Author(s)

Christian J. Long, Daniel Ebeling, Santiago D. Solares, Rachel J. Cannara

Inhibition of cellular proliferation and enhancement of hydrogen peroxide production in fibrosarcoma cell line by weak radio frequency magnetic fields

September 23, 2014

Author(s)

Pablo Castello, Iain Hill, Lucas Portelli, Frank Barnes, Robert J. Usselman, Carlos Martino

This study presents experimental data for the effects of weak radio frequency (RF) magnetic fields on hydrogen peroxide (H2O2) production and cellular growth rates of fibrosarcoma HT1080 cells in vitro. Cells were exposed either to 45mT static magnetic

Photochemical Properties of Hydrofluoroethers CH3OCHF2, CH3OCF3, and CHF2OCH2CF3: Reactivity toward OH, IR Absorption Cross Sections, Atmospheric Lifetimes and Global Warming Potentials

September 22, 2014

Author(s)

Vladimir L. Orkin, Victor Khamaganov, A G. Guschin

Rate constants for the gas phase reactions of OH radicals with three partially fluorinated ethers, CH3OCF3 (kHFE-143a), CH3OCHF2 (kHFE-152a), and CHF2OCH2CF3 (kHFE-245fa), were measured using a discharge flow electron paramagnetic resonance technique

Influence of glycosidic linkage on the solution conformational entropy of gluco- and mannobioses

September 19, 2014

Author(s)

Andre M. Striegel, Mallory J. Morris

Employing size-exclusion chromatography, an entropically-controlled separation technique, we have determined the solution conformational entropy (-delta S) of (1-2)-, (1-3)-, (1-4)-, and (1-6)-linked gluco- and mannobioses with an alpha anomeric

Creation of Libraries of Recurring Mass Spectra from Large Data Sets assisted by a Dual-Column Workflow

September 18, 2014

Author(s)

William G. Mallard, Stephen E. Stein, Halket M. John, Yuri A. Mirokhin, Nirina Rabe Andriamaharavo

An analytical methodology has been developed for extracting recurrent unidentified spectra (RUS) from large GC/MS data sets. Spectra were first extracted from original data files by the Automated Mass Spectral Deconvolution and Identification System (AMDIS

Identification of phase boundaries in surfactant solutions via Compton spectrum quenching,Identification of phase boundaries in surfactant solutions via Compton spectrum quenching

September 18, 2014

Author(s)

Denis E. Bergeron

The critical micelle concentration and the phase boundary between isolated surfactant molecules and aggregates are probed via fluorescence spectroscopy and a Compton spectrum quenching technique for aqueous and toluenic solutions of Triton X-100 (TX-100)

Visualizing Mass Transport in Desorption Electrospray Ionization using Time-of-Flight Secondary Ion Mass Spectrometry, an In-Depth Study

September 16, 2014

Author(s)

Shinichiro Muramoto

Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was used to visualize the transport of analyte desorbed by a desorption electrospray ionization (DESI) technique. We investigated the effect of probe incidence angle, height, and distance on the

Loss of H2 and CO from Protonated Aldehydes in Electrospray Ionization Mass Spectrometry

September 15, 2014

Author(s)

Pedatsur Neta, Yamil Simon, Yuxue Liang, Stephen Stein

Electrospray ionization mass spectrometry of 3-formylchromones and 3-formylcoumarins shows that collision-induced dissociation of the protonated ions results in elimination of H¬¬2 as a major fragmentation route. This loss of H2 yields an unstable carbonyl

Bromination of marine particulate organic matter through oxidative mechanisms

September 14, 2014

Author(s)

Bruce D. Ravel, Alessandra C. Leri, Kathleen Thornton, Lawrence M. Mayer

Although bromine is considered conservative in seawater, it exhibits a well established correlation with organic carbon in marine sediments. This carbon-bromine association was recently attributed to covalent bonding, with organobromine in sinking

Recommended isolated-line profile for representing high-resolution spectroscopic transitions

September 11, 2014

Author(s)

Joseph T. Hodges, Jonathan Tennyson, P F. Bernath, Alain Campargue, A Csaszar, L Daumont, R R. Gamache, D Lisak, Olga Naumenko, Lawrence Rothman, Ha Tran, N Zobov, Boone Chris, L Gianfrani, Jean M. Hartmann

Recommendations of an IUPAC Task Group formed in 2011 on Intensities and line shapes in high-resolution spectra of water isotopologues from Experiment and Theory" (Project No. 2011-022-2- 100) on line profiles of high-resolution rotational-vibrational

VALIDATION AND TRACEABILITY OF XRF AND SEM-EDS ELEMENTAL ANALYSIS RESULTS FOR SOLDER IN HIGH-RELIABILITY APPLICATIONS

September 9, 2014

Author(s)

John R. Sieber, Adam Mortensen

A procedure and calibration samples have been developed for X-ray fluorescence spectrometry (XRF) and scanning electron microscopy with energy dispersive spectrometry (SEM-EDS) methods of analysis of Sn and Pb mass fractions in solder and coatings in

Pairwise Alignment of Chromatograms using a Fisher-Rao Metric

September 2, 2014

Author(s)

William E. Wallace, Anuj Srivastava, Kelly H. Telu, Yamil Simon

A new approach to aligning chromatograms is introduced and applied to examples of metabolite identification by liquid chromatography mass spectrometry (LC MS). A square root representation of the chromatograms derivative coupled with a Fisher Rao

Do column frits contribute to the on-column, flow-induced degradation of macromolecules?

August 15, 2014

Author(s)

Andre M. Striegel

Flow-induced, on-column degradation is a major hindrance to the accurate characterization of ultra- high molar mass macromolecules and colloids. This degradation is a direct result of the large shear rates which are generated within the column, which cause

Vibronic Coupling in Asymmetric Bichromophores: Experimental Investigation of Diphenylmethane-d5

August 14, 2014

Author(s)

Nathan Pillsbury, Nathanael M. Kidwell, Benjamin Nebgen, Lyudmila V. Slipchenko, Kevin O. Douglass, John R. Cable, David F. Plusquellic

Vibrationally and rotationally resolved electronic spectra of diphenylmethane-d5 (DPM-d5) are reported in the isolated-molecule environment of a supersonic expansion. While small, the asymmetry induced by deuteration of one of the aromatic rings is

Attachment of a Reduction-Oxidative Active Diruthenium Compound to Au and Si Surfaces by Click Chemistry

August 10, 2014

Author(s)

Sujitra J. Pookpanratana, Joseph W. Robertson, Curt A. Richter, Christina A. Hacker, Lee J. Richter, Julia Savchenko, Steven Cummings, Tong Ren

We report the formation of molecular monolayers containing redox-active diruthenium(II,III) compound to gold and silicon surfaces via click chemistry. The use of Cu-catalyzed azide-alkyne cycloaddition enables modular design of molecular surfaces and

Polyelectrolyte Multilayers in Microfluidic Systems for Biological Applications

July 31, 2014

Author(s)

Saugandhika S. Minnikanti, Aveek Gangopadhyay, Darwin Reyes-Hernandez

The formation of polyelectrolyte multilayers (PEMs) for the first time two decades ago demonstrating the assembly on charged substrates in a very simple and efficient way have proven to be a reliable method to obtain structures tunable at the nanometer

High-Speed Coherent Raman Fingerprint Imaging of Biological Tissues

July 20, 2014

Author(s)

Charles H. Camp, Young J. Lee, John M. Heddleston, Christopher M. Hartshorn, Angela R. Hight Walker, Jeremy N. Rich, Justin D. Lathia, Marcus T. Cicerone

We have developed a coherent Raman imaging platform using broadband coherent anti-Stokes Raman scattering (BCARS) that provides an unprecedented combination of speed, sensitivity, and spectral breadth. The system utilizes a unique configuration of laser

Reductive dimerization and oligomerization of alcohols, ketones, and aldehydes to hydrocarbons on a promoted, fused iron catalyst

July 17, 2014

Author(s)

Anzor I. Mikaia, Leonid S. Glebov, Vladimir G. Zaikin, George A. Kliger

A new reductive dimerization and oligomerization reaction of (C5 and C6) cycloalkanols and cycloalkanones, benzaldehyde, and benzyl alcohol to hydrocarbons containing as many, or more, carbon atoms as the reactant oxygenated compound on a promoted, fused

Low Temperature Plasma for Bevel Crater Depth Profiling of Crosslinking Organic Multilayers: Comparison with C60 and Argon Gas Cluster Sources

July 6, 2014

Author(s)

Shinichiro Muramoto, Derk Rading, Brian G. Bush, John G. Gillen, David G. Castner

A model delta layer system made of thin films of an organometallic chelate and an aromatic molecule (aluminum hydroxyquinolinate and bathocuproine), both that crosslink under traditional ion beam irradiation, was used to evaluate the effectiveness of using

Final report of the key comparison CCQM-K98: Pb isotope amount ratios in bronze

July 1, 2014

Author(s)

Jochen Vogl, Yong-Hyeon Yim, Kyoung-Seok Lee, Heidi Goenaga-Infante, Dmitriy Malinowskiy, Tongxiang Ren, Jun Wang, Robert D. Vocke Jr., Karen E. Murphy, Naoko Nonose, Olaf Rienitz, Janine Noordmann, Teemu Naeykki, Timo Sara-Aho, Bet?l Ari, Oktay Cankur

Isotope amount ratios are proving useful in an ever increasing array of applications that range from studies unravelling transport processes, to pinpointing the provenance of specific samples as well as trace element quantification by using isotope

Mass Spectrometry Detection and Imaging of Organic and Inorganic Explosive Device Signatures using Desorption Electro-Flow Focusing Ionization

June 26, 2014

Author(s)

Thomas Forbes, Edward Sisco

We demonstrate the coupling of desorption electro-flow focusing ionization (DEFFI) with in-source collision induced dissociation (CID) for the mass spectrometric (MS) detection and imaging of explosive device components, including both organic, e.g

Investigating the potential role of persistent organic pollutants in Hawaiian green sea turtle fibropapillomatosis

June 25, 2014

Author(s)

Jennifer M. Lynch

It has been hypothesized for decades that environmental pollutants may contribute to green sea turtle fibropapillomatosis (FP) possibly through immunosuppression leading to greater susceptibility to the herpesvirus, the putative causative agent of this

Measurement Methods for the Oral Uptake of Engineered Nanomaterials from Human Dietary Sources: Summary and Outlook

June 25, 2014

Author(s)

Christopher W. Szakal, Lyubov Tsytsikova, David Carlander, Timothy V. Duncan

This article is one of a series of 4 that report on a task of the NanoRelease Food Additive (NRFA) project of the International. Life Science Institute Center for Risk Science Innovation and Application. The project aims are to identify, evaluate, and

The Predictive Power of the Annellation Theory: The Case of the C32H16 Benzenoid Polycyclic Aromatic Hydrocarbons

June 20, 2014

Author(s)

Jorge O. Ona Ruales, Yosadara Ruiz-Morales

The positions of maximum absorbance for the p and β bands of the UV−vis spectra of the benzenoid polycyclic aromatic hydrocarbons, PAHs, with molecular formula C32H16 have been predicted by means of the annellation theory. In the C32H16 PAH group there are

Photoacoustic Spectrometer for Accurate, Continuous Measurements of Atmospheric Carbon Dioxide Concentration

June 19, 2014

Author(s)

Joseph T. Hodges, Zachary D. Reed, Brent A. Sperling, Roger D. van Zee, James R. Whetstone, Keith A. Gillis

We have developed a portable photoacoustic spectrometer that offers routine, precise and accurate measurements of atmospheric carbon dioxide mixing ratios. The spectrometer is temperature controlled, continuously samples and dries atmospheric air, and