Collaborative Studies with Psychiatric Practitioners

Abstract Collaborative studies at the University of Iowa and the National Center for Voice and Speech aim to help the voices of teachers. Investigators study how cells and tissues respond to vibration doses simulating typical vocalization patterns of teachers. A commercially manufactured instrument is uniquely modified to support cell and tissue growth, to subject tissues to vocalization-like forces, and to measure viscoelastic properties of tissues. Through this basic science approach, steps toward safety limits for vocalization and habilitating rest periods for professional voice users will be achieved.

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Wither Thou Goest?: Introduction

OMEGA - Journal of Death and Dying ◽

10.2190/x6r6-r4h2-n85y-3nx3 ◽

1988 ◽

Vol 18 (4) ◽

pp. 257-263 ◽

Cited By ~ 1

Keyword(s):

Collaborative Studies ◽

The Revolution

In the last thirty years we have witnessed a burgeoning of research in thanatology. As in most disciplines, the revolution has been followed by a period of filling-in. As we confront the possibility of nuclear and biological annihilation, we need to recover the pioneering vision and spirit that heralded the beginning of thanatology. The authors in this volume call for broad-based interdisciplinary, multi-method, collaborative studies that not only contribute to the development of thanatological theory and research, but also are of use to clinicians, social planners and legislators.

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Spectrophotometric Determination of Raceophenidol in Feed at Very Low Levels

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/51.4.752 ◽

1968 ◽

Vol 51 (4) ◽

pp. 752-755

Author(s):

Edward L Pratt ◽

Morris E Auerbach

Keyword(s):

Spectrophotometric Determination ◽

Growth Promotion ◽

Ultraviolet Spectrum ◽

Average Value ◽

Collaborative Studies ◽

Low Levels ◽

Concentration Levels

Abstract Raceophenidol in feed at concentration levels intended for growth promotion of poultry can be estimated by a curvature inversion measurement related to the ultraviolet spectrum of derived p-methylsulfonylbenzaldehyde. The drug can be accurately measured at the 0.0005% level. Collaborative studies on the method showed an average value of 94 ± 10% of claim. The method is recommended for adoption as official, first action.

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Colorimetric Determination of Hydroxyproline as Measure of Collagen Content in Meat and Meat Products: NMKL Collaborative Study

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/73.1.54 ◽

1990 ◽

Vol 73 (1) ◽

pp. 54-57 ◽

Cited By ~ 13

Author(s):

Kurt Kolar

Keyword(s):

Collaborative Study ◽

Colorimetric Method ◽

Meat Products ◽

Acid Oxidation ◽

Colorimetric Determination ◽

Mean Values ◽

Collaborative Studies ◽

Freeze Dried ◽

Analytical Result

Abstract A colorimetric method for the determination of hydroxyproline as a measure of collagen in meat and meat products has been collaboratively studied in 18 laboratories. The method includes hydrolysis with sulfuric acid, oxidation with chloramine- T, and formation of a reddish purple complex with 4- dimethylaminobenzaldehyde. Five frozen and 3 freeze-dried samples were tested, ranging in content from 0.11 to 0.88% and from 0.39 to 4.0% hydroxyproline, respectively. The mean values of 2 identical samples were 0.245 and 0.251 %. The average recovery from a spiked sample was 96.1 %. The hydroxyproline content of a known sample (a mixture of 2 samples in the ratio 5:2) was calculated to 1.42%, which agrees well with the analytical result, 1.40%. In comparison with other collaborative studies, based on the ISO analytical method, the repeatability and reproducibility of this method agree well with the other results. This method was accepted as an official NMKL method by all national Committees, and has been adopted official first action by AOAC as an NMKLAOAC method.

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Antioxidants (BHA and BHT) in Breakfast Cereals

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/48.4.694 ◽

1965 ◽

Vol 48 (4) ◽

pp. 694-699

Author(s):

David M Takahashi

Keyword(s):

Gas Chromatography ◽

Petroleum Ether ◽

Chromatographic Method ◽

Steam Distillation ◽

Gas Chromatograph ◽

Breakfast Cereals ◽

Collaborative Studies ◽

Different Types ◽

Gas Chromatographic Method

Abstract Antioxidants (BHA and BHT) in different types of breakfast cereals were studied by argon ionization gas chromatography. Samples containing antioxidants were packed into the column, and antioxidants were eluted with redistilled petroleum ether. EIuates were concentrated under N2 and injected into a Barber-Colman Model 10 gas chromatograph. Recoveries ranged from about 92 to 110%. Results obtained by steam distillation-colorimetry methods were erratic. Colorimetric procedures were not free from interferences and could lead to highly erroneous results at the lower ppm levels. The gas chromatographic method is faster, simpler, and more accurate. Collaborative studies on corn and rice ready-to-eat breakfast cereals are recommended.

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Collaborative Studies of Methods for Butterfat in omogenized and Chocolate Milk

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/47.3.573 ◽

1964 ◽

Vol 47 (3) ◽

pp. 573-576

Author(s):

D J Mitchell

Keyword(s):

Collaborative Study ◽

Chocolate Milk ◽

Collaborative Studies

Abstract The AOAC Roese-Gottlieb and Rapid Detergent (TeSa) methods for the determination of butterfat in pasteurized, homogenized milk and in chocolate milk were compared in a collaborative study. The results by the detergent method on both products were comparable to those by the Roese-Gottlieb method. The Babcock method gave low results on the homogenized milk.

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Distal Cholangiocarcinoma: Time for Collaborative Studies

World Journal of Surgery ◽

10.1007/s00268-006-0508-4 ◽

2006 ◽

Vol 31 (2) ◽

pp. 343-344

Author(s):

Saxon Connor

Keyword(s):

Distal Cholangiocarcinoma ◽

Collaborative Studies

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Determination of mono- and diacylglycerols in edible oils and fats by high performance liquid chromatography and evaporative light scattering detector: Results of collaborative studies and the standardised method

Pure and Applied Chemistry ◽

10.1351/pac199971101983 ◽

1999 ◽

Vol 71 (10) ◽

pp. 1983-1991 ◽

Cited By ~ 26

Author(s):

D. Berner ◽

A. Dieffenbacher

Keyword(s):

Liquid Chromatography ◽

Light Scattering ◽

High Performance ◽

Edible Oils ◽

Collaborative Study ◽

Evaporative Light Scattering Detector ◽

Light Scattering Detection ◽

Collaborative Studies ◽

Evaporative Light Scattering

The development, by collaborative study, of standardised method for the determination of mono- and diacylglycerols in vegetable oils and fats is described. The method involves separation of mono- and diacylglycerols by normal phase high-performance liquid-liquid chromatography (HPLC) and evaporative light scattering detection of a solution of oil, fat or a commercial mono- and diacylglycerol preparation in a organic solvent.

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