Workplace exposure - Procedures for the determination of the concentration of chemical agents - Basic performance requirements

2021 ◽  
Keyword(s):  
Workplace Exposure ◽  
Performance Requirements ◽  
Chemical Agents ◽  
Basic Performance

scholarly journals Technological and methodological aspects of the production of low- and lactose-free dairy products

Food systems ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 144-153
Author(s):  
Ju. V. Nikitina ◽  
E. V. Topnikova ◽  
O. V. Lepilkina ◽  
O. G. Kashnikova
Keyword(s):  
Dairy Products ◽  
High Performance ◽  
Amperometric Detection ◽  
Anion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Special Operations ◽  
Performance Requirements ◽  
Aoac Method ◽  
Methodological Aspects

The features of technologies for low- and lactose-free dairy products, which provide for special operations to hydrolyze lactose or remove it using ultra- or nanofiltration followed by hydrolysis of the residual amount, are considered. Dairy products manufactured using these technologies in different countries as well as enterprises leading in this field of production are presented. The analysis of the methods used to determine the quantitative content of residual lactose in low- and lactose-free dairy products is carried out: enzymatic, HPLC, HPAEC-PAD, amperometric biosensors, Raman spectroscopy. Due to the dairy industry’s need for analytical methods for the determination of lactose in milk and dairy products with low- or lactose-free content, the AOAC Stakeholder Group on Strategic Food Analysis Methods approved Standard Performance Requirements for Biosensor Methods (SMPR®) 2018.009. These requirements were introduced for the quantitative determination of lactose in milk as well as in dairy and milk-containing products with a low or no lactose content. The biosensor method is recommended for use as the official first step of AOAC method. Additionally, it is advisable to use high performance liquid chromatography (HPLC) with mass spectrometric detection, as well as high performance anion exchange chromatography with pulsed amperometric detection (HPAEC-PAD) as an international standard method of analysis for the determination of lactose in milk with low- or lactose-free content.

Standard Method Performance Requirements (SMPRs®) 2018.005: Determination of Kavalactones and/or Flavokavains from Kava (Piper methysticum)

2018 ◽  
Vol 101 (4) ◽  
pp. 1256-1260
Author(s):  
Steven J Dentali ◽  
Cristina Amarillas ◽  
Tyler Blythe ◽  
Paula N Brown ◽  
Anton Bzhelyansky ◽  
...  
Keyword(s):  
Standard Method ◽  
Piper Methysticum ◽  
Method Performance ◽  
Performance Requirements

AOAC SMPR® 2017.007:Standard Method Performance Requirements (SMPRs) for Determination of Lutein in Infant and Adult/Pediatric Nutritional Formula

2017 ◽  
Vol 100 (4) ◽  
pp. 1219-1220
Author(s):  
Gregory Hostetler ◽  
Sneh Bhandari ◽  
Carolyn Burdette ◽  
Adrienne McMahon ◽  
Shang-Jing Pan ◽  
...  
Keyword(s):  
Standard Method ◽  
Method Performance ◽  
Performance Requirements

Generic Combustion Method for Determination of Crude Protein in Feeds: Collaborative Study

1989 ◽  
Vol 72 (5) ◽  
pp. 770-774 ◽  
Author(s):  
Rose A Sweeney
Keyword(s):  
Crude Protein ◽  
Collaborative Study ◽  
Combustion Method ◽  
Performance Requirements ◽  
General Terms ◽  
Relative Standard ◽  
Kjeldahl Method ◽  
Standard Deviations ◽  
And Performance

Abstract Nine laboratories participated in a collaborative study on determination of crude protein in animal feeds to compare a generically described combustion method with the AOAC mercury catalyst Kjeldahl method (7.015). The combustion method was written in general terms of method principle, apparatus specifications, and performance requirements. The sample set comprised closely matched pairs of feed ingredients and mixed products ranging from 10 to 90% protein. Ten pairs ground to 0.5 mm were the focus of the study; 4 pairs were ground to 1.0 mm for comparison. Nicotinic acid and lysine monohydrochloride were included as standards. Collaborators were instructed to report their results for performance checks using materials supplied. Only one laboratory failed to meet the proposed limits. Seven laboratories used the LECO Model FP-228 analyzer and 2 used the LECO CHN 600 analyzer. For the 0.5 mm pairs, repeatability standard deviations (sr) ranged from 0.09 to 0.58 for the Kjeldahl method and from 0.14 to 0.33 for the combustion method, with a pooled sr value of 0.28 and relative standard deviation (RSDr) of 0.59%. Reproducibility standard deviations (SR) ranged from 0.23 to 0.86 (Kjeldahl) and from 0.30 to 0.61 (combustion), with a pooled sR value of 0.52 and RSDR of 1.10%. Grand means for the samples ground to 0.5 mm were 47.65% protein by the combustion method and 47.41% protein by the Kjeldahl method. For samples ground to 1.0 mm, corresponding values were 31.82 and 31.50% protein. The generic combustion method has been approved interim official first action.

scholarly journals Determination of Chondroitin Sulfate Content in Raw Materials and Dietary Supplements by High-Performance Liquid Chromatography with UV Detection After Enzymatic Hydrolysis: Single-Laboratory Validation First Action 2015.11

2016 ◽  
Vol 99 (1) ◽  
pp. 53-54
Author(s):  
Sharon L Brunelle
Keyword(s):  
Chondroitin Sulfate ◽  
Dietary Supplements ◽  
High Performance ◽  
Raw Materials ◽  
Method Performance ◽  
Expert Review ◽  
Performance Requirements ◽  
Expert Review Panel ◽  
Single Laboratory

Abstract A previously validated method for determination of chondroitin sulfate in raw materials and dietary supplements was submitted to the AOAC Expert Review Panel (ERP) for Stakeholder Panel on Dietary Supplements Set 1 Ingredients (Anthocyanins, Chondroitin, and PDE5 Inhibitors) for consideration of First Action Official MethodsSM status. The ERP evaluated the single-laboratory validation results against AOAC Standard Method Performance Requirements 2014.009. With recoveries of 100.8–101.6% in raw materials and 105.4–105.8% in finished products and precision of 0.25–1.8% RSDr within-day and 1.6–4.72% RSDr overall, the ERP adopted the method for First Action Official Methods status and provided recommendations for achieving Final Action status.

New Developments in the Assessment of Professional Education

1969 ◽  
Vol 3 (2) ◽  
pp. 92-98
Author(s):  
Christine McGuire
Keyword(s):  
Professional Education ◽  
Professional Competence ◽  
Systematic Evaluation ◽  
New Developments ◽  
Curricular Development ◽  
Evaluation Procedures ◽  
Performance Requirements ◽  
Essential Components ◽  
Individual Achievement

Increasingly, the products of medical education are being studied by systematic evaluation procedures which include: empirical determination of essential components of professional competence, employment of simulation technique to supplement more conventional methods of assessment, application of pre-established standards, and utilization of numerous feedback mechanisms to assure fuller exploitation of evaluation data. Such data are utilized not only to assess individual achievement of critical performance requirements, but also to identify differential rates and patterns of progress toward these goals, to determine the relation between these patterns and important independent variables in the learning situation, to guide curricular development, and to provide evidence of value in re-defining the goals themselves. It seems clear that this approach can be useful in the evaluation of professional education.

AOAC SMPR® 2017.006:Standard Method Performance Requirements (SMPRs) for Determination of β-Carotene in Infant and Adult/ Pediatric Nutritional Formula

2017 ◽  
Vol 100 (4) ◽  
pp. 1217-1218
Author(s):  
Gregory Hostetler ◽  
Sneh Bhandari ◽  
Carolyn Burdette ◽  
Adrienne McMahon ◽  
Shang-Jing Pan ◽  
...  
Keyword(s):  
Standard Method ◽  
Method Performance ◽  
Performance Requirements ◽  
Β Carotene

scholarly journals Optical Energy Variability Induced by Speckle: The Cases of MERLIN and CHARM-F IPDA Lidar

Atmosphere ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 540 ◽  
Author(s):  
Cassé ◽  
Gibert ◽  
Edouart ◽  
Chomette ◽  
Crevoisier
Keyword(s):  
Optical Filter ◽  
Speckle Noise ◽  
Spectral Width ◽  
Atmospheric Methane ◽  
Energy Monitoring ◽  
Optical Energy ◽  
Performance Requirements ◽  
Signal Path ◽  
Random Draw

In the context of the FrenchGerman space lidar mission MERLIN (MEthane Remote LIdar missioN) dedicated to the determination of the atmospheric methane content, an end-to-end mission simulator is being developed. In order to check whether the instrument design meets the performance requirements, simulations have to count all the sources of noise on the measurements like the optical energy variability induced by speckle. Speckle is due to interference as the lidar beam is quasi monochromatic. Speckle contribution to the error budget has to be estimated but also simulated. In this paper, the speckle theory is revisited and applied to MERLIN lidar and also to the DLR (Deutsches Zentrum für Luft und Raumfahrt) demonstrator lidar CHARM-F. Results show: on the signal path, speckle noise depends mainly on the size of the illuminated area on ground; on the solar flux, speckle is fully negligible both because of the pixel size and the optical filter spectral width; on the energy monitoring path a decorrelation mechanism is needed to reduce speckle noise on averaged data. Speckle noises for MERLIN and CHARM-F can be simulated by Gaussian noises with only one random draw by shot separately for energy monitoring and signal paths.

scholarly journals Evaluation of use of the optional unit QA-810V for the determination of five-part leukocyte differentials

2001 ◽  
Vol 23 (3) ◽  
pp. 77-81
Author(s):  
Izumi Tsuda ◽  
Takayuki Takubo ◽  
Tomio Kamitani ◽  
Noriyuki Tatsumi
Keyword(s):  
Blood Cell ◽  
Room Temperature ◽  
Haematology Analyser ◽  
Clinical Laboratories ◽  
Basic Performance ◽  
Abnormal Cells ◽  
Blood Specimens ◽  
Complete Blood Counts

The newly developed QA-810V is an optional unit for the determination of five-part white blood cell differentials. It can be used together with the same manufacturer's haematology analyser which has been used in relatively small-sized laboratories. The present study evaluates the basic performance of the QA-810V and the MEK-8118 haematology analyser using routinely obtained blood specimens treated with ethylenedioaminetetraacetic acid-2K. In this evaluation, reproducibility was good and little carryover was found. Accurate measurements were possible for up to 24h of storage. Storage at 4°C yielded more stable measurements of complete blood counts and five-part differentials than storage at room temperature. A good correlation between findings with the MEK-8118 haematology analyser and those with the SE-9000 haematology analyser was found for complete blood counts. The leukocyte differential obtained with the QA-810V correlated well with eye counts, withr>0.9for percentages of neutrophils, lymphocytes and eosinophils. Scattergrams obtained with the QA-810V reflected the presence of abnormal cells. The performance of the QA-810V was excellent and it can improve the quality of testing in clinical laboratories.

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