Now showing items 21-40 of 2554

• #### Mid-Infrared Trace Gas Sensor Technology Based on Intracavity Quartz-Enhanced Photoacoustic Spectroscopy ﻿

(2017)
The application of compact inexpensive trace gas sensor technology to a mid-infrared nitric oxide (NO) detectoion using intracavity quartz-enhanced photoacoustic spectroscopy (I-QEPAS) is reported. A minimum detection limit ...
• #### Development of a multimodal foveated endomicroscope for the detection of oral cancer ﻿

(2017)
A multimodal endomicroscope was developed for cancer detection that combines hyperspectral and confocal imaging through a single foveated objective and a vibrating optical fiber bundle. Standard clinical examination has a ...
• #### Nitrate radicals and biogenic volatile organic compounds: oxidation, mechanisms, and organic aerosol ﻿

(2017)
Oxidation of biogenic volatile organic compounds (BVOC) by the nitrate radical (NO3) represents one of the important interactions between anthropogenic emissions related to combustion and natural emissions from the biosphere. ...
• #### Predicting solvation free energies and thermodynamics in polar solvents and mixtures using a solvation-layer interface condition ﻿

(2017)
We demonstrate that with two small modifications, the popular dielectric continuum model is capable of predicting, with high accuracy, ion solvation thermodynamics (Gibbs free energies, entropies, and heat capacities) in ...
• #### Differences in BVOC oxidation and SOA formation above and below the forest canopy ﻿

(2017)
Gas-phase biogenic volatile organic compounds (BVOCs) are oxidized in the troposphere to produce secondary pollutants such as ozone (O3), organic nitrates (RONO2), and secondary organic aerosol (SOA). Two coupled ...
• #### Using molecular imaging to assess the delivery and infection of protease activated virus in animal model of myocardial infarction ﻿

(2017)
Cardiovascular diseases remain the greatest cause of death in the US and gene therapy has the potential to be an effective therapy. In this study, we demonstrated MMP-9 based protease-activatable virus (PAV) for selective ...
• #### Reasoning about Strategies: on the Satisfiability Problem ﻿

(2017)
Strategy Logic (SL, for short) has been introduced by Mogavero, Murano, and Vardi as a useful formalism for reasoning explicitly about strategies, as first-order objects, in multi-agent concurrent games. This logic turns ...
• #### Temperature-dependent optical properties of titanium nitride ﻿

(2017)
The refractory metal titanium nitride is promising for high-temperature nanophotonic and plasmonic applications, but its optical properties have not been studied at temperatures exceeding 400 °C. Here, we perform in-situ ...
• #### Simultaneous dual-gas QEPAS detection based on a fundamental and overtone combined vibration of quartz tuning fork ﻿

(2017)
A dual-gas quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor system based on a frequency division multiplexing technique of a quartz tuning fork (QTF) was developed and experimentally demonstrated. Two beams from ...
• #### Ultra-high sensitive acetylene detection using quartz-enhanced photoacoustic spectroscopy with a fiber amplified diode laser and a 30.72 kHz quartz tuning fork ﻿

(2017)
An ultra-high sensitive acetylene (C2H2) Quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a high power laser and a quartz tuning fork with a resonance frequency f0 of 30.72 kHz was demonstrated. An ...
• #### Somatic genome editing with CRISPR/Cas9 generates and corrects a metabolic disease ﻿

(2017)
Germline manipulation using CRISPR/Cas9 genome editing has dramatically accelerated the generation of new mouse models. Nonetheless, many metabolic disease models still depend upon laborious germline targeting, and are ...
• #### Resonant Coupling between Molecular Vibrations and Localized Surface Plasmon Resonance of Faceted Metal Oxide Nanocrystals ﻿

(2017)
Doped metal oxides are plasmonic materials that boast both synthetic and postsynthetic spectral tunability. They have already enabled promising smart window and optoelectronic technologies and have been proposed for use ...
• #### Modeling micelle formation and interfacial properties with iSAFT classical density functional theory ﻿

(2017)
Surfactants reduce the interfacial tension between phases, making them an important additive in a number of industrial and commercial applications from enhanced oil recovery to personal care products (e.g., shampoo and ...
• #### Shot noise detection in hBN-based tunnel junctions ﻿

(2017)
High quality Au/hBN/Au tunnel devices are fabricated using transferred atomically thin hexagonal boron nitride as the tunneling barrier. All tunnel junctions show tunneling resistance on the order of several kΩ/μm2. Ohmic ...
• #### Lenslet array tunable snapshot imaging spectrometer (LATIS) for hyperspectral fluorescence microscopy ﻿

(2017)
Snapshot hyperspectral imaging augments pixel dwell time and acquisition speeds over existing scanning systems, making it a powerful tool for fluorescence microscopy. While most snapshot systems contain fixed datacube ...
• #### Engineering bacterial thiosulfate and tetrathionate sensors for detecting gut inflammation ﻿

(2017)
There is a groundswell of interest in using genetically engineered sensor bacteria to study gut microbiota pathways, and diagnose or treat associated diseases. Here, we computationally identify the first biological thiosulfate ...
• #### A photoconversion model for full spectral programming and multiplexing of optogeneticﾠsystems ﻿

(2017)
Optogenetics combines externally applied light signals and genetically engineered photoreceptors to control cellular processes with unmatched precision. Here, we develop a mathematical model of wavelength‐ and intensity‐dependent ...
• #### Reconstruction of Lamé Moduli and Density at the Boundary Enabling Directional Elastic Wavefield Decomposition ﻿

(2017)
We consider the inverse boundary value problem for the system of equations describing elastic waves in isotropic media on a bounded domain in $\mathbb{R}^3$ via a finite-time Laplace transform. The data are the dynamical ...
• #### Coarse-Grained Conformational Sampling of Protein Structure Improves the Fit to Experimental Hydrogen-Exchange Data ﻿

(2017)
Monitoring hydrogen/deuterium exchange (HDX) undergone by a protein in solution produces experimental data that translates into valuable information about the protein's structure. Data produced by HDX experiments is often ...
• #### Interrogating the topological robustness of gene regulatory circuits by randomization ﻿

(2017)
One of the most important roles of cells is performing their cellular tasks properly for survival. Cells usually achieve robust functionality, for example, cell-fate decision-making and signal transduction, through multiple ...