Automated analysis of holointerferograms for the determination of surface displacement

1988 ◽  
Vol 28 (1) ◽  
pp. 86-91 ◽  
Author(s):  
D. R. Matthys ◽  
T. D. Dudderar ◽  
J. A. Gilbert
Keyword(s):  
Surface Displacement ◽  
Automated Analysis

An Automated Method for the Determination of Serum Calcium with Glyoxal Bis (2-Hydroxyanil)

1967 ◽  
Vol 13 (6) ◽  
pp. 515-520 ◽  
Author(s):  
Genevieve Farese ◽  
Janice L Schmidt ◽  
Milton Mager
Keyword(s):  
Serum Calcium ◽  
Automated Analysis ◽  
Automated Method ◽  
Good Agreement

Abstract A completely automated analysis is described for the determination of serum calcium with glyoxal bis (2-hydroxyanil) solution (GBHA). The method is simple and precise, and the data obtained are in good agreement with results obtained by the manual GBHA procedure.

Determination of Underwater Plate Dynamics Using Laser Beams

1974 ◽  
Vol 96 (3) ◽  
pp. 722-728
Author(s):  
Rudolph E. Croteau ◽  
Herman E. Sheets
Keyword(s):  
Near Field ◽  
Surface Displacement ◽  
Coupled System ◽  
Green Laser ◽  
Testing Facility ◽  
Acoustic Testing ◽  
Propeller Blades ◽  
The Relationship ◽  
Made In

Underwater plate vibration and its associated noise are of interest for the analysis of ship structures, propeller blades, and other areas of underwater acoustics. In order to analyze the relationship between a plate vibrating underwater and the acoustic pressure in the near-field, optical interferometric holography, using a blue-green laser beam, was used to determine surface displacement for the vibrating plate, which was excited through a fluid-coupled system. Acoustic measurements of the same source were made in a water tower concurrently with the holography and later at a precision acoustic testing facility. This method permits prediction of underwater plate modal frequencies and shapes with high accuracy.

Simplified Version of the Ampoule–Persulfate Method for Determination of Dissolved Organic Carbon

1987 ◽  
Vol 44 (1) ◽  
pp. 214-218 ◽  
Author(s):  
William H. McDowell ◽  
Jonathan J. Cole ◽  
Charles T. Driscoll
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Automated Analysis ◽  
Combustion Products ◽  
Technical Grade ◽  
Digestion Procedure ◽  
Wet Digestion ◽  
Simplified Method ◽  
Continuous Stream

A simplified method for the determination of dissolved organic carbon is based upon the ampoule–persulfate wet digestion procedure. The modification proposed involves use of a continuous stream of sparging gas (technical grade oxygen) during the ampoule sealing process to minimize entry of combustion products from the sealing flame. The method provides reliable results with a minimum of training and equipment compared with other methods of sealing ampoules. Further, the proposed method is inexpensive, relatively simple, and compares favorably with costly, automated analysis of dissolved organic carbon.

Automated Analysis of Organophosphorus Insecticides by Wet Digestion-Oxidation and Colorimetric Determination of the Derived Orthophosphate

1968 ◽  
Vol 51 (3) ◽  
pp. 697-708
Author(s):  
Daniel E Ott ◽  
Francis A Gunther
Keyword(s):  
Thin Layer ◽  
Automated Analysis ◽  
Automated System ◽  
Phosphorus Compounds ◽  
Colorimetric Determination ◽  
Total System ◽  
Blue Color ◽  
Automated Technique ◽  
Analytical System

Abstract Adaptation of an AutoAnalyzer system to the determination of phosphorus in organic compounds now provides an automated technique generally applicable for the analysis of organophosphorus inserticides. Following automated wet digestionoxidation of the compounds (some need preliminary alkaline hydrolysis) the resulting orthophosphate is determined automatically by a colorimetric system reading a phosphomolybdenum blue color at 815 mμ. The total system handles 10 samples per hour with a precision and sensitivity readily practical for organophosphorus insecticide analysis; the insecticidal solutions tested, at concentrations of 2 μg/ml or greater, gave repeatable responses within ± 10%. Manual cleanup procedures for most crop samples are required to remove interfering noninsecticidal phosphorus compounds before the system is applicable to total residue analyses. Thimet (phorate) and phosphamidon at 0.5 ppm in fortified stripping solutions of strawberries were analyzed separately without cleanup, however. Adsorption column chromatography on Florisil has provided rapid and efficient cleanup of fortified spinach extractives prior to automated analysis of Thimet and dimethoate. Autoanalysis of individual spots from thin layer chromatograms provides considerable specificity to this nonspecific analytical system, and for some crops provides all the cleanup necessary. Thin layer "spots" can be introduced directly into the automated system.

scholarly journals Determination of Biotin and Folate in Infant Formula and Milk by Optical Biosensor-Based Immunoassay

2000 ◽  
Vol 83 (5) ◽  
pp. 1141-1148 ◽  
Author(s):  
Harvey E Indyk ◽  
Eileen A Evans ◽  
Malin C Bostrom Caselunghe ◽  
Bjorn S Persson ◽  
Paul M Finglas ◽  
...  
Keyword(s):  
Interaction Analysis ◽  
Automated Analysis ◽  
Optical Biosensor ◽  
Cross Reactivity ◽  
Biomolecular Interaction ◽  
Technology Standard ◽  
Sample Extraction ◽  
Relative Standard ◽  
Assay Methods

Abstract Biomolecular interaction analysis was evaluated for the automated analysis of biotin- and folate-supplemented infant formulas and milk powders. The technique was configured as a biosensor-based, nonlabeled inhibition immunoassay using monoclonal antibodies raised against analyte-conjugate. Sample extraction conditions were optimized and antibodies were evaluated for cross-reactivity. Performance parameters included a quantitation range of 2–70 ng/mL, recoveries of 86–102%, agreement against assigned reference values for National Institute of Standards and Technology Standard Reference Material 1846, between-laboratory reproducibility relative standard deviation of 9.1% for biotin and 8.1% for folate, respectively, and equivalence against reference microbiological assay methods for both analytes.

Use of the Berthelot Reaction in the Automated Analysis of Serum Urea Nitrogen

1966 ◽  
Vol 12 (3) ◽  
pp. 151-157 ◽  
Author(s):  
Alan A Wilcox ◽  
Wallace E Carroll ◽  
Rex E Sterling ◽  
H A Davis ◽  
Arnold G Ware
Keyword(s):  
Automated Analysis ◽  
Serum Urea ◽  
Urea Nitrogen ◽  
Serum Urea Nitrogen ◽  
Enzymatic Action ◽  
Diacetyl Monoxime ◽  
Automated Determination

Abstract A method is presented for the automated determination of urea nitrogen using the Berthelot reaction for measuring the ammonia released by the enzymatic action of urease. The method compares favorably with the automated diacetyl monoxime method and employs less dangerous and less expensive reagents.

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