A5037117947- Analytical Chemistry and Chromatography
- Analytical Chemistry and Sensors
- Spectroscopy and Chemometric Analyses
- Advanced Chemical Sensor Technologies
- Water Quality Monitoring and Analysis
- Mass Spectrometry Techniques and Applications
- Advanced Sensor Technologies Research
- Cancer Genomics and Diagnostics
- Microfluidic and Capillary Electrophoresis Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Hemophilia Treatment and Research
- Analytical chemistry methods development
- Infrared Thermography in Medicine
- NMR spectroscopy and applications
- Advanced Cellulose Research Studies
- DNA Repair Mechanisms
- Chromatography in Natural Products
- Semiconductor Lasers and Optical Devices
- Protein Interaction Studies and Fluorescence Analysis
- Genomic variations and chromosomal abnormalities
- Optical Imaging and Spectroscopy Techniques
- Burn Injury Management and Outcomes
- Genomics and Chromatin Dynamics
- Surface Roughness and Optical Measurements
- Blood Coagulation and Thrombosis Mechanisms
American Thrombosis and Hemostasis Network
2023-2024
University of Washington
1977-2005
Seattle University
2005
Walla Walla University
1992
Irish Hospice Foundation
1983
Wilmington University
1979
DuPont (United States)
1979
Experimental Station
1979
Washington State University
1972
University of Virginia
1972
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of multicomponent fluorescence dataI. M. Warner, G. D. Christian, E. R. Davidson, and J. B. CallisCite this: Anal. Chem. 1977, 49, 4, 564–573Publication Date (Print):April 1, 1977Publication History Published online1 May 2002Published inissue 1 April 1977https://pubs.acs.org/doi/10.1021/ac50012a016https://doi.org/10.1021/ac50012a016research-articleACS PublicationsRequest reuse permissionsArticle Views518Altmetric-Citations144LEARN ABOUT...
A real-time video imaging system called the burn depth indicator (IBDI) is described; IBDI can discriminate areas of wounds expected to heal in three weeks or less from day injury those not that time period. The analysis be performed on about third postburn debrided wounds. relative diffuse reflectivity burn-wound measured red, green, and near-infrared wavelength bands an algorithm established previously used translate this optical data into healing probabilities. Over 100 wound sites were...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSub-microliter flow-through cuvette for fluorescence monitoring of high performance liquid chromatographic effluentsL. W. Hershberger, J. B. Callis, and G. D. ChristianCite this: Anal. Chem. 1979, 51, 9, 1444–1446Publication Date (Print):August 1, 1979Publication History Published online1 May 2002Published inissue 1 August 1979https://pubs.acs.org/doi/10.1021/ac50045a021https://doi.org/10.1021/ac50045a021research-articleACS PublicationsRequest...
Improvements in process control, which determine production efficiency and product quality, are critically dependent upon on-line analysis. The technology of the required instrumentation will be substantially expanded by advances sensing devices. In future, hardware consist sensor arrays miniaturized instruments fabricated microlithography silicon micromachining. Chemometrics extensively used software to provide error detection, selfcalibration, correction as well multivariate data analysis...
Abstract The Video Fluorometer is a new instrument for fluorescence analysis which offers significant advantages the study of complex systems. This can acquire 241 spectra, taken at different exciting wavelengths in 16.7 milliseconds. These results are displayed three-dimensional graphical format real time. Coupled with laboratory computer, this should provide algorithms luminescence spectra multi-component
To be useful in the clinical laboratory, multicomponent fluorescence analysis requires both rapid measurement of intensity at a variety excitation and emission wavelengths unambiguous reduction data by efficient algorithms. The Video Fluorometer, which exploits multi-channel capability low-light-level television sensor to simultaneously acquire spectra, can meet first requirement. For example, complete set spectra for perylene obtained less than 2 s concentrations 10(-10) mol/liter. second...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiquid chromatography with real-time video fluorometric monitoring of effluentsL. W. Hershberger, J. B. Callis, and G. D. ChristianCite this: Anal. Chem. 1981, 53, 7, 971–975Publication Date (Print):June 1, 1981Publication History Published online1 May 2002Published inissue 1 June 1981https://pubs.acs.org/doi/10.1021/ac00230a011https://doi.org/10.1021/ac00230a011research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRapid Scanning Fluorescence SpectroscopyD. W. Johnson, J. B. Callis, and G. D. ChristianCite this: Anal. Chem. 1977, 49, 8, 747A–757APublication Date (Print):July 1, 1977Publication History Published online24 May 2012Published inissue 1 July 1977https://pubs.acs.org/doi/10.1021/ac50016a769https://doi.org/10.1021/ac50016a769research-articleACS PublicationsRequest reuse permissionsArticle Views156Altmetric-Citations46LEARN ABOUT THESE METRICSArticle...
We have studied possible sources of resting human lymphocyte DNA content variation among euploid males and females as determined by flow-microfluorometry. A major source arises from instrumental instability, most notably flow-rate changes. This can be detected minimized the use chicken erythrocytes an internal standard. second differences in rates stain uptake. The lowest coefficients (0.3 %) individuals like sex, optimal distinction between sexes, were achieved after exposing samples for 24...
Recent deve lop ments in severa l areas of chem istry, laser technology, photod etector strum e ntation, a nd calorim etry are su rveyed , and thei r probable impact on th measurement quantum yi elds is assessed.C he mical developments incl ude: (a) synthesis design ne w luminesce nt mol ecul es that cou ld possi bl y serve as standards, (b) pplication improved se pa ration techniques to provide sam pl extreme purity, (c) advances photoch",m istry port developm widera nge c actinomete rs.Th...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMultichannel imaging spectrophotometer for direct analysis of mixtures on thin-layer chromatography platesM. L. Gianelli, D. H. Burns, J. B. Callis, G. Christian, and N. AndersenCite this: Anal. Chem. 1983, 55, 12, 1858–1862Publication Date (Print):October 1, 1983Publication History Published online1 May 2002Published inissue 1 October 1983https://pubs.acs.org/doi/10.1021/ac00262a006https://doi.org/10.1021/ac00262a006research-articleACS...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRapid Scanning Fluorescence SpectroscopyD. W. Johnson, J. B. Callis, and G. D. ChristianCite this: Anal. Chem. 1977, 49, 8, 747A–757APublication Date (Print):July 1, 1977Publication History Published online24 May 2012Published inissue 1 July 1977https://pubs.acs.org/doi/10.1021/ac50016a769https://doi.org/10.1021/ac50016a769research-articleACS PublicationsRequest reuse permissionsArticle Views156Altmetric-Citations46LEARN ABOUT THESE METRICSArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThin-layer chromatography with in situ multichannel image detection of fluorescent compoundsM. L. Gianelli, J. B. Callis, G. D. Christian, N. H. Andersen, and ChristianCite this: Anal. Chem. 1981, 53, 9, 1357–1361Publication Date (Print):August 1, 1981Publication History Published online1 May 2002Published inissue 1 August 1981https://pubs.acs.org/doi/10.1021/ac00232a012https://doi.org/10.1021/ac00232a012research-articleACS PublicationsRequest...
Differential scanning calorimetry is used to probe various aspects of the supramolecular structure alkyl surface reversed-phase liquid chromatography packings. Three types materials were employed in these studies: A, conventional chemically bonded C18 and C22 packings at coverages about 2.0 2.5 micromoles/m2; B, same as but supplemented with free or C22n-alkanes approximately 1:1 ratio; C, high area SiO2 particulates which physically adsorbed sufficient densities yield closest-packed...
high-resolution flow-cytometric measurements of ethidium bromide/mithramycin-stained human fibroblast cultures reveal discrepancies between fluorescence pulse-height distributions and genome size as a function cell strain, culture conditions, age, proliferative stage. These were quantitatively assessed by (1) evaluation the variation widths 2c histogram peaks, (2) comparisons sample to standard ratios 45,XO 49,XXXXY strains, (3) comparison intensities among populations identical but...
In recent experiments we have demonstrated the feasibility of a new approach to boundary layer transition detection. This employs temperature dependence certain photoluminescent materials in form surface coating or 'paint' detect change heat transfer characteristics that accompany transition. The were conducted for low subsonic transonic Mach numbers on two-dimensional airfoil and flat plate configurations. Paint derived locations determined compared those obtained from Preston pressure...
Abstract We introduce a field portable Thin Layer Chromatography (TLC) plate scanner based on digital image processing hardware. The TLC module consists of Charge Coupled Device (CCD) imaging detector, Xenon strobe light source, and the necessary hardware to capture process video images. instrument is bundled with laptop computer form compact size 6 inch thick briefcase. To automate analysis, software has been developed for (a) subtraction dark noise, correction variations due pixel...
Abstract Introduction Gene therapy is now a reality for individuals with haemophilia, yet little known regarding the quality‐of‐life impact of factor correction. As few data exist, and recognizing analogy to liver transplantation (OLTX), we identified OLTX+ OLTX‐ men in ATHNdataset compare post‐OLTX VIII IX on quality life (QoL) by Haem‐A‐QoL PROMIS‐29. Methods were matched age, race, haemophilia type severity. Deidentified demographic data, including post‐transplant levels, genotype target...