THE QUALITATIVE AND QUANTITATIVE MEASUREMENT OF PEAT SMOKE ON DISTILLER'S MALT*

1977 ◽  
Vol 83 (3) ◽  
pp. 163-168 ◽  
Author(s):  
G. N. Bathgate ◽  
A. G. Taylor
Keyword(s):  
Quantitative Measurement ◽  
Qualitative And Quantitative ◽  
Peat Smoke

scholarly journals Molecular Species of the Alcohol Biomarker Phosphatidylethanol in Human Blood Measured by LC-MS

2009 ◽  
Vol 55 (7) ◽  
pp. 1395-1405 ◽  
Author(s):  
Anders Helander ◽  
Yufang Zheng
Keyword(s):  
Fatty Acid ◽  
Human Blood ◽  
Molecular Species ◽  
Quantitative Measurement ◽  
Selected Ion Monitoring ◽  
Blood Samples ◽  
Qualitative And Quantitative ◽  
Ms Analysis ◽  
Alcohol Biomarker ◽  
Product Ions

Abstract Background: The alcohol biomarker phosphatidylethanol (PEth) comprises a group of ethanol-derived phospholipids formed from phosphatidylcholine by phospholipase D. The PEth molecular species have a common phosphoethanol head group onto which 2 fatty acid moieties are attached. We developed an electrospray ionization (ESI) LC-MS method for qualitative and quantitative measurement of different PEth species in human blood. Methods: We subjected a total lipid extract of whole blood to HPLC gradient separation on a C4 column and performed LC-ESI-MS analysis using selected ion monitoring of deprotonated molecules for the PEth species and phosphatidylpropanol (internal standard). Identification of individual PEth species was based on ESI–tandem mass spectrometry (MS/MS) analysis of product ions. Results: The fatty acid moieties were the major product ions of PEth, based on comparison with PEth-16:0/16:0, 18:1/18:1, and 16:0/18:1 reference material. For LC-MS analysis of different PEth species in blood, we used a calibration curve covering 0.2–7.0 μmol/L PEth-16:0/18:1. The lower limit of quantitation of the method was <0.1 μmol/L, and intra- and interassay CVs were <9% and <11%. In blood samples collected from 38 alcohol patients, the total PEth concentration ranged between 0.1 and 21.7 μmol/L (mean 8.9). PEth-16:0/18:1 and 16:0/18:2 were the predominant molecular species, accounting for approximately 37% and 25%, respectively, of total PEth. PEth-16:0/20:4 and mixtures of 18:1/18:1 plus 18:0/18:2 (not separated using selected ion monitoring because of identical molecular masses) and 16:0/20:3 plus 18:1/18.2 made up approximately 13%, 12%, and 8%. Conclusions: This LC-MS method allows simultaneous qualitative and quantitative measurement of several PEth molecular species in whole blood samples.

Current Analytical Methods for Qualitative and Quantitative Measurement of d-Xylitol

D-Xylitol ◽  
2012 ◽  
pp. 245-263
Author(s):  
Zhongqi Jiang ◽  
Samuel Amartey ◽  
Zi-Hua Jiang ◽  
Wensheng Qin
Keyword(s):  
Analytical Methods ◽  
Quantitative Measurement ◽  
Qualitative And Quantitative

A review and preview of developments in the measurement of sociability

2020 ◽  
Vol 84 (1) ◽  
pp. 79-101
Author(s):  
Nicholas Boswell ◽  
Jian Cao ◽  
W. Jackeline Torres ◽  
Margaret Beier ◽  
Ashutosh Sabharwal ◽  
...  
Keyword(s):  
Mental Health ◽  
Social Interactions ◽  
Quantitative Measurement ◽  
Measurement Methods ◽  
Self Report ◽  
Physical And Mental Health ◽  
Qualitative And Quantitative ◽  
Social Patterns ◽  
Advantages And Disadvantages ◽  
Mental Health Effects

Sociability is a complex, multifactorial trait. Its importance is underscored by a multitude of negative physical and mental health effects related to loneliness and social isolation. However, current measures of sociability primarily rely on subjective recall and self- report, which have inherent weaknesses and limitations. Although objective and automatic measurements could help to avoid some of these issues, they are still in early stages of development. In this article, the authors review past and present methods of measuring sociability and social interactions. This encompasses both subjective and objective subsets of qualitative and quantitative measurement modalities to gain a broader, more accurate perspective on sociability. Through an analysis of advantages and disadvantages of measurement methods within these categories, a foundational knowledge of sociability measurement can be understood. Utilizing current technology and research methods holds promise to more accurately represent individuals' social networks and social patterns.

scholarly journals Qualitative and quantitative measurement of the anterior and posterior meniscal root attachments of the New Zealand white rabbit

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
David Civitarese ◽  
Tammy L. Haut Donahue ◽  
Christopher M. LaPrade ◽  
Adriana J. Saroki ◽  
Samuel G. Moulton ◽  
...  
Keyword(s):  
New Zealand ◽  
Quantitative Measurement ◽  
Zealand White Rabbit ◽  
Qualitative And Quantitative ◽  
New Zealand White Rabbit ◽  
Meniscal Root

scholarly journals Microimmunodiffusion test for the serodiagnosis of paracoccidioidomycosis

1989 ◽  
Vol 31 (1) ◽  
pp. 40-43 ◽  
Author(s):  
Maria Isabel Correa da Silva ◽  
Luiz Gastão Chamma ◽  
Marcello Franco
Keyword(s):  
Quantitative Measurement ◽  
Minimum Amount ◽  
Qualitative And Quantitative ◽  
Simultaneous Testing

We used the micro- and macroimmunodiffusion test for the qualitative and quantitative measurement of anti - P. brasiliensis antibodies in serum of patients with paracoccidioidomycosis. All 103 paracoccidioidomycosis sera (100%) were positive in the micro test versus 87% positivity index in the macrotest. All 83 control sera from patients with other diseases were negative in both tests. Titers of the positive sera tended to be higher in the microtest, which revealed sharper and easier to read precipiting bands. Microimmunodiffusion is simple to be performed, requires a minimum amount of reagents and allows the simultaneous testing of 102 sera. It may replace the macrotest specially in laboratories dealing with great serologic routine.

Qualitative and quantitative measurement of depression in veterans recovering from stroke

2005 ◽  
Vol 42 (3) ◽  
pp. 277 ◽  
Author(s):  
Christine L. Williams ◽  
Maude R. Rittman ◽  
Craig Boylstein ◽  
Christopher Faircloth ◽  
Qin Haijing
Keyword(s):  
Quantitative Measurement ◽  
Qualitative And Quantitative

scholarly journals Performance evaluation of novel fluorescent-based lateral immune flow assay (LIFA) for rapid detection and quantitation of total anti-SARS-CoV-2 S-RBD binding antibodies in infected individuals

2022 ◽  
Author(s):  
Farah M. Shurrab ◽  
Nadin Younes ◽  
Duaa W. Al-Sadeq ◽  
Hamda Qotba ◽  
Laith J. Abu-Raddad ◽  
...  
Keyword(s):  
Quantitative Measurement ◽  
Neutralizing Antibody ◽  
Kappa Statistic ◽  
Protein S ◽  
Rt Pcr ◽  
Qualitative And Quantitative ◽  
Automated Assay ◽  
Quantitative Validation ◽  
Binding Antibody ◽  
Response Post

1.AbstractBackgroundThe vast majority of the commercially available LFIA is used to detect SARS-CoV-2 antibodies qualitatively. Recently, a novel fluorescence-based LIFA test was developed for quantitative measurement of the total binding antibody units (BAU/mL) against the receptor-binding domain of the SARS-CoV-2 spike protein (S-RBD).AimTo evaluate the performance of the fluorescence LIFA Finecare™ 2019-nCoV S-RBD test along with its reader (Model No.: FS-113).MethodsPlasma from 150 RT-PCR confirmed-positive individuals and 100 pre-pandemic samples were tested by FinCare™ to access sensitivity and specificity. For qualitative and quantitative validation of the FinCar™ measurements, the BAU/mL results of FinCare™ were compared with results of two reference assays: the surrogate virus-neutralizing test (sVNT, GenScript, USA), and the VIDAS®3 automated assay (BioMérieux, France).ResultsFinecare™ showed 92% sensitivity and 100% specificity compared to PCR. Cohen’s Kappa statistic denoted moderate and excellent agreement with sVNT and VIDAS®3, ranging from 0.557 (95% CI: 0.32-0.78) to 0.731 (95% CI: 0.51-0.95), respectively. A strong correlation was observed between Finecare™/sVNT (r=0.7, p<0.0001) and Finecare™/VIDAS®3 (r=0.8, p<0.0001).ConclusionFinecare™ is a reliable assay and can be used as a surrogate to assess binding and neutralizing antibody response post-infection or vaccination, particularly in none or small laboratory settings.

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