Semiautomated Method for Editing Surgical Videos

Abstract A semiautomated fluorometric method for the determination of resperpine in tablets was collaboratively studied by 7 laboratories. The method is a modification of the semiautomated method of Urbányi and Stober, which involves formation of a fluorogen with vanadium pentoxide. Collaborators were supplied with 3 composites, each from a different dosage level of commercial tablets. The results obtained agreed well with the AOAC manual fluorometric method; coefficients of variation ranged from 0.45 to 2.70%. The method has been adopted as official first action.

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Semiautomated Determination of Tridihexethyl Chloride in Meprobamate Tablets

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/67.4.677 ◽

1984 ◽

Vol 67 (4) ◽

pp. 677-678

Author(s):

Ross D Kirchhoefer

Keyword(s):

Aqueous Solution ◽

Active Ingredient ◽

Chloroform Solution ◽

Semiautomated Method

Abstract A semiautomated method has been developed for the analysis of tablets containing tridihexethyl chloride in combination with meprobamate. The method is based on the USP assay for tridihexethyl chloride in tablets. The active ingredient is dissolved in water, the aqueous solution is mixed with buffer and dye solution, and the dye complex is extracted into chloroform. The absorbance of the chloroform solution is monitored at 408 nm. Results from the semiautomated method agree with I results for the USP method. Recoveries from authentic formulations I show no interference from the excipients tested.

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Semiautomated Method for Riboflavin in Food Products: Collaborative Study

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/62.5.1041 ◽

1979 ◽

Vol 62 (5) ◽

pp. 1041-1044

Author(s):

David C Egberg

Keyword(s):

Collaborative Study ◽

Food Products ◽

Manual Method ◽

Semiautomated Method

Abstract A collaborative study was conducted comparing a semiautomated riboflavin method with a manual riboflavin method for 10 food products. Six laboratories provided results from the semiautomated method and 16 laboratories used the manual technique. The semiautomated method was more repeatable within a laboratory and more reproducible between laboratories than was the manual method. The semiautomated method results compared favorably with the manual method for all 10 products.

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Comparison of Four Indexes to Fetal Pulmonary Maturity

Clinical Chemistry ◽

10.1093/clinchem/20.4.486 ◽

1974 ◽

Vol 20 (4) ◽

pp. 486-491 ◽

Cited By ~ 7

Author(s):

Arthur F Rosenthal ◽

Marta G Vargas ◽

Selma V Schiff

Keyword(s):

Thin Layer ◽

Total Lipid ◽

Chromatographic Analysis ◽

Fetal Lung ◽

Stability Test ◽

Lipid Phosphorus ◽

Lung Maturation ◽

Fetal Lung Maturation ◽

Layer Chromatography ◽

Semiautomated Method

Abstract With use of the same amniotic fluid specimens, lecithin concentration was compared with nonchromatographically determined glycerophospholipid, total lipid phosphorus, and the bubble-stability test as indexes of fetal lung maturation. The lecithin analysis was performed by thin-layer chromatography, with use of a semiautomated method of spotting and nondigestive release of phosphorus from the separated spots. We conclude that, next to the chromatographic analysis, the best tests are glycerophosphatide P, the bubble-stability test, and total lipid P, in that descending order. Lecithin determination as compared with densitometric evaluation of the lecithin/sphingomyelin ratio is discussed.

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Semiautomated Method for the Analysis of Formulations of Chlorpheniramine Maleate and Brompheniramine Maleate

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/62.3.552 ◽

1979 ◽

Vol 62 (3) ◽

pp. 552-555

Author(s):

Don C Cox ◽

Ross D Kirchhoefer

Keyword(s):

Acid Solution ◽

Active Ingredient ◽

Dilute Acid ◽

Chlorpheniramine Maleate ◽

Precision Data ◽

Dilute Acid Solution ◽

Aqueous Layer ◽

Brompheniramine Maleate ◽

Semiautomated Method

Abstract The determination of chlorpheniramine maleate and brompheniramine maleate in tablets, capsules, injections, and elixirs has been automated. The active ingredient is dissolved in dilute HCl. The dilute acid solution is sampled, made basic with dilute NaOH, and extracted with isooctane. The isooctane phase is resampled and the drug is re-extracted into dilute HCl. The absorbance of the acidic aqueous layer is monitored at 265 nm. The method is an automated version of the general USP XIX assay for salts of organic nitrogenous bases. The results from the semiautomated procedure agree well with the USP XIX and NF XIV official methods. Recoveries were 100% from an authentic tablet material. The system is linear from 0 to 300% of declared potency. The procedure is free from common excipient and dye interferences. Precision data are included for both the automated and official methods.

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A Semiautomated Method for Determining Amylase Activity in Serum and Urine

Clinical Chemistry ◽

10.1093/clinchem/16.5.390 ◽

1970 ◽

Vol 16 (5) ◽

pp. 390-395 ◽

Cited By ~ 4

Author(s):

John A Lott ◽

Joan E Mercier

Keyword(s):

Reducing Sugars ◽

Normal Values ◽

Amylase Activity ◽

Potassium Ferricyanide ◽

Optimum Conditions ◽

Endogenous Glucose ◽

Semiautomated Method ◽

Serum And Urine

Abstract Serum or urine is incubated at 50°C with a substrate containing dextrin. The endogenous glucose and reducing sugars liberated from the substrate by amylase are separately determined on the AutoAnalyzer by use of alkaline potassium ferricyanide. Optimum conditions and limitations were evaluated. The method is compared to those of Henry and Chiamori (Somogyi) and Fishman and Doubilet. Normal values for serum and urine are presented.

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P2-025: A semiautomated method for quantification of 18F-labelled amyloid plaque imaging agents based on volume of interest and voxel-based statistical analyses

Alzheimer s & Dementia ◽

10.1016/j.jalz.2008.05.1105 ◽

2008 ◽

Vol 4 ◽

pp. T374-T375

Author(s):

Abhinay Joshi ◽

Daniel Skovronsky ◽

Michael Pontecorvo

Keyword(s):

Amyloid Plaque ◽

Statistical Analyses ◽

Imaging Agents ◽

Plaque Imaging ◽

Volume Of Interest ◽

Semiautomated Method

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Study of the Anatomical Features of the Offending Arteries Involved in Glossopharyngeal Neuralgia

Operative Neurosurgery ◽

10.1093/ons/opz425 ◽

2020 ◽

Vol 19 (3) ◽

pp. E259-E268 ◽

Cited By ~ 1

Author(s):

Kohei Inoue ◽

Toshio Matsushima ◽

Shinji Ohara ◽

Jun Masuoka ◽

Tatsuya Abe

Keyword(s):

Glossopharyngeal Nerve ◽

Glossopharyngeal Neuralgia ◽

Type I ◽

Type Ii ◽

Vagus Nerves ◽

Anatomical Features ◽

The Past ◽

Different Types ◽

Running Pattern ◽

Surgical Videos

Abstract BACKGROUND The anatomic features of the posterior inferior cerebellar arteries (PICAs) and the anterior inferior cerebellar arteries (AICAs) as offending arteries involved in glossopharyngeal neuralgia (GPN) are important to dictate the best surgical approach. OBJECTIVE To study and classify the anatomic features of the offending arteries. METHODS All clinical data and surgical videos from 18 GPN cases that were surgically treated during the past 10 yr were retrospectively reviewed. RESULTS Among these 18 patients, the offending arteries involved were the PICA in 12 (66.7%), AICA in 4 (22.2%), and both PICA and AICA in 2 (11.1%). The PICA were then classified into the following groups based on their anatomic features: type I: the PICA formed an upward loop at the level of the glossopharyngeal nerve and passed between the glossopharyngeal and vestibulocochlear nerves; type II: the PICA formed an upward loop at the level of the glossopharyngeal nerve and passed between the glossopharyngeal and vagus nerves or between the rootlets of the vagus nerve; and type III: the PICA passed between the glossopharyngeal and vestibulocochlear nerves without forming a loop. The AICA had only one running pattern. CONCLUSION The offending arteries involved in GPN, mainly the PICA and/or AICA, were classified into 4 different types based on their anatomic features.

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Collaborative Study of a Semiautomated Method for the Analysis of Prednisolone and Prednisone Tablets

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/60.1.27 ◽

1977 ◽

Vol 60 (1) ◽

pp. 27-31

Author(s):

James F Brower

Keyword(s):

Collaborative Study ◽

Colorimetric Method ◽

Alcoholic Solution ◽

Tetramethylammonium Hydroxide ◽

Assay Method ◽

Blue Tetrazolium ◽

Coefficients Of Variation ◽

The Individual ◽

Semiautomated Method

Abstract A semiautomated colorimetric method for the determination of prednisolone and prednisone was collaboratively studied by 6 collaborators. In the method, an alcoholic solution of the drug is extracted with chloroform and the extract is reacted with tetramethylammonium hydroxide and blue tetrazolium; the absorbance of the resulting color is read at 525 nm. Collaborators were supplied with 4 composites of tablets of different dosage levels, 2 containing prednisolone and 2 containing prednisone. Results agreed with those obtained by the author using the CSP total steroid assay method. The coefficients of variation of the individual collaborator’s results for prednisolone and prednisone ranged from 0.54 to 2.38 and from 0.34 to 2.19%, respectively. This method has been adopted as official first action.

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