Advanced Search
Display options
Filter resources
Text Availability
Article type
Publication date
Species
Language
Sex
Age
Showing 1 to 12 of 250 entries
Sorted by: Best Match Show Resources per page
Inference of young groundwater ages and modern groundwater proportions using chlorofluorocarbon and tritium/helium-3 tracers from West Hawai 'i Island

EPSCoR Research Infrastructure Improvement Program AND Program Evaluation

Dulai H, Lee J, Popp BN.
GSID: PK_qP5KwL6gJ
BK Okuhata, DM Thomas, H Dulai, BN Popp, J Lee… - Journal of …, 2022 - Elsevier

The geologically complex western aquifers of Hawai 'i Island serve as the primary reservoir of fresh potable water for residents, yet the area's hydrogeologic characteristics are still not well understood. Groundwater age is a fundamental parameter used to better...

Autoneutralizing anions as a neutral beam probe for the analysis of insulating materials

program design

[No authors listed]
GSID: NiSbRkgbkJcJ
JE Delmore, AD Appelhans… - Biomedical & …, 1988 - Wiley Online Library

A well‐focused beam of fast (2.5–25 keV) sulfur hexafluoride neutral molecules has been developed based upon the autoneutralizing sulfur hexafluoride gas‐phase anion. This …

Spectral broadening and compression of sub-millijoule laser pulses in hollow-core fibers filled with sulfur hexafluoride.

Optics express

Hoffmann A, Zürch M, Gräfe M, Spielmann C.
PMID: 24921323
Opt Express. 2014 May 19;22(10):12038-45. doi: 10.1364/OE.22.012038.

Spectral broadening in gas-filled hollow-core fibers is discussed for sulfur hexafluoride, a molecular gas with Raman activity. Experimental results for compressed pulses are presented for input pulses longer than the Raman period and shorter than the dephasing time at...

Thermodynamic modeling and analysis of an optical electric-field sensor.

Sensors (Basel, Switzerland)

Xiao X, Xu Y, Dong Z.
PMID: 25811225
Sensors (Basel). 2015 Mar 24;15(4):7125-35. doi: 10.3390/s150407125.

The stability of the optical electric field sensor (OEFS) in actual operation is affected by environmental factors such as temperature and SF6 (sulfur hexafluoride). To analyze the operational environment parameters affecting the optical properties of crystals, a thermodynamic model...

Evaluation of drift gas selection in complex sample analyses using a high performance drift tube ion mobility-QTOF mass spectrometer.

The Analyst

Kurulugama RT, Darland E, Kuhlmann F, Stafford G, Fjeldsted J.
PMID: 26178817
Analyst. 2015 Oct 21;140(20):6834-44. doi: 10.1039/c5an00991j.

A recently developed uniform-field high resolution ion mobility (IM) quadrupole time of flight (Q-TOF) mass spectrometer is used for evaluating the utility of alternate drift gases for complex sample analyses. This study provides collision cross section comparison for 275...

Application of infrared spectroscopy to monitoring gas insulated high-voltage equipment: electrode material-dependent SF(6) decomposition.

Analytical and bioanalytical chemistry

Kurte R, Beyer C, Heise HM, Klockow D.
PMID: 12185577
Anal Bioanal Chem. 2002 Aug;373(7):639-46. doi: 10.1007/s00216-002-1280-4. Epub 2002 Apr 13.

Sulfur hexafluoride is a chemically inert gas which is used in gas insulated substations (GIS) and other high-voltage equipment, leading to a significant enhancement of apparatus lifetime and reductions in installation size and maintenance requirements compared to conventional air...

Calibration transfer algorithm for automated qualitative analysis by passive Fourier transform infrared spectrometry.

Analytical chemistry

Koehler FW, Small GW, Combs RJ, Knapp RB, Kroutil RT.
PMID: 10763270
Anal Chem. 2000 Apr 01;72(7):1690-8. doi: 10.1021/ac9907888.

The automated qualitative analysis of passive Fourier transform infrared (FT-IR) remote sensing data is made difficult by the presence in the data of background and instrument-specific variation. For data collected with a single instrument, variation in the data arises...

Positive end-expiratory pressure and ventilation inhomogeneity in mechanically ventilated children.

Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies

Schibler A, Henning R.
PMID: 12780980
Pediatr Crit Care Med. 2002 Apr;3(2):124-128. doi: 10.1097/00130478-200204000-00006.

OBJECTIVE: To obtain optimal titration of positive end-expiratory pressure (PEEP) during mechanical ventilation with functional residual capacity and ventilation homogeneity measurements. DESIGN: Experimental human and animal study. INTERVENTIONS: Functional residual capacity and five indices of uneven ventilation (alveolar mean...

A novel algorithm to model the influence of host lattice flexibility in molecular dynamics simulations: loading dependence of self-diffusion in carbon nanotubes.

The Journal of chemical physics

Jakobtorweihen S, Lowe CP, Keil FJ, Smit B.
PMID: 16674250
J Chem Phys. 2006 Apr 21;124(15):154706. doi: 10.1063/1.2185619.

We describe a novel algorithm that includes the effect of host lattice flexibility into molecular dynamics simulations that use rigid lattices. It uses a Lowe-Andersen thermostat for interface-fluid collisions to take the most important aspects of flexibility into account....

Miniature differential mobility spectrometry using atmospheric pressure photoionization.

Analytical chemistry

Nazarov EG, Miller RA, Eiceman GA, Stone JA.
PMID: 16808465
Anal Chem. 2006 Jul 01;78(13):4553-63. doi: 10.1021/ac052213i.

Positive and negative ion spectra have been obtained with a miniature differential mobility spectrometer equipped with a photoionization source operating at atmospheric pressure. With benzene as a dopant, providing C6H6+ as reactant ion, protonated molecular ions and proton-bound dimer...

Atmospheric halocarbons, hydrocarbons, and sulfur hexafluoride: global distributions, sources, and sinks.

Science (New York, N.Y.)

Singh HB, Salas LJ, Shigeishi H, Scribner E.
PMID: 17771727
Science. 1979 Mar 02;203(4383):899-903. doi: 10.1126/science.203.4383.899.

The global distribution of fluorocarbon-12 and fluorocarbon-11 is used to establish a relatively fast interhemispheric exchange rate of 1 to 1.2 years. Atmospheric residence times of 65 to 70 years for fluorocarbon-12 and 40 to 45 years for fluorocarbon-l1...

Vapor-liquid equilibrium of hexadecapolar fluids from a perturbation-based equation of state.

The Journal of chemical physics

Gámez F, Lago S, del Río F, Benavides AL.
PMID: 16999539
J Chem Phys. 2006 Sep 14;125(10):104505. doi: 10.1063/1.2339018.

In this work a numerically tractable expression for the interaction potential between two point hexadecapoles with octahedral symmetry and a molecular-based equation of state derived by perturbation theory for hexadecapolar fluids are presented. The polar system is modeled by...

Showing 1 to 12 of 250 entries