Letter: Avoidance of errors in the automated determination of serum enzyme activities by use of a strip-chart recorder.

1976 ◽  
Vol 22 (8) ◽  
pp. 1411-1412 ◽  
Author(s):  
I M Osbert ◽  
K B Hammond
Keyword(s):  
Enzyme Activities ◽  
Strip Chart Recorder ◽  
Serum Enzyme ◽  
Strip Chart ◽  
Chart Recorder ◽  
Automated Determination

A strip chart recorder pattern recognition tool kit for Shuttle operations

1993 ◽  
Author(s):  
David Hammen ◽  
Travis Moebes ◽  
Robert Shelton ◽  
Robert Savely
Keyword(s):  
Pattern Recognition ◽  
Strip Chart Recorder ◽  
Strip Chart ◽  
Chart Recorder

Evaluation of the Beckman "System TR Enzyme Analyzer"

1975 ◽  
Vol 21 (8) ◽  
pp. 1107-1112 ◽  
Author(s):  
Richard Passey ◽  
Ronald L Gillum ◽  
Mary Louise Giles ◽  
John B Fuller
Keyword(s):  
Temperature Control ◽  
Enzyme Assay ◽  
Product Evaluation ◽  
Analysis Time ◽  
Strip Chart Recorder ◽  
Strip Chart ◽  
Accuracy And Precision ◽  
Chart Recorder ◽  
Assay Methods ◽  
Carry Over

Abstract We evaluated 16 claims made by Beckman Instruments, Inc. for its Enzyme Analyzer (System TR), under a rigid written protocol for the Product Evaluation Subcommittee of the Standards Committee of the College of American Pathologists. We found the following to be within the company's specifications: (a) accuracy and precision of the temperature control; (b) accuracy and precision of the sample and reagent pipets; (c) instrument precision, both within-run and between-day; (d) carry-over from a sample with activity > 1000 U/liter; (e) instrument-to-instrument variation; (f) analytical linearity; (g) analysis time; (h) correlation of the instrumentprinted answer with the activity calculated manually from a strip-chart recorder; (i) precision of the instrument's built-in electronic "standard"; (j) effectiveness of the over-range indicators; and (k) correlation between results of these enzyme assay methods and those for kinetic methods used in our laboratory. The instrument performed well.

A Complete Instrumental System for Energy Dispersive Diffractometry and Fluorescence Analysis

1971 ◽  
Vol 15 ◽  
pp. 254-265 ◽  
Author(s):  
G.W. Martin ◽  
A.S. Klein
Keyword(s):  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
Strip Chart Recorder ◽  
X Ray ◽  
Strip Chart ◽  
Multichannel Analyzer ◽  
Digital Format ◽  
Chart Recorder ◽  
Instrumental System ◽  
Sample Chamber

A system, has been designed and tested for rapid energy dispersive diffractometry and simultaneous fluorescence analysis. A turntable composed of the sample chamber with attached air-cooled x-ray tube allows the 2θ angle to be varied with respect to the stationary Si(Li) detector. Data for most analyses can be obtained in one minute per sample. Results are stored in the memory of a multichannel analyzer and are read out on a CRT, strip chart recorder or tabulated in digital format by a computer.

Thyroid Disorders and the Distribution of Orally Administered Radioiodine

1977 ◽  
Vol 16 (06) ◽  
pp. 205-213
Author(s):  
H. DaCosta ◽  
B. A. Bagwe
Keyword(s):  
Whole Body ◽  
Thyroid Disorders ◽  
Strip Chart Recorder ◽  
Body Counter ◽  
Strip Chart ◽  
Chart Recorder ◽  
Whole Body Counter ◽  
Shadow Shield

Summary128 control, thyrotoxic, hypothyroid and goitrous euthyroid children were administered 1–2 μCi Na 131I orally and studied in a shadow-shield whole-body counter. 48-hr whole-body counts permitted the differentiation of the first 3 groups (p < 0.005). Ratio of extrathyroid:excreted 131I was 3 times greater in thyrotoxics than in goitrous euthyroids, but the thyroid:extrathyroid ratio was 3 times greater in the latter group. The whole-body profile scan obtained at 48 hr on an attached strip chart recorder, revealed activity not only in the thyroid but even lower down in the vicinity of the knees and feet.

The Viscurometer—An Instrument to Assess Processing Characteristics

1964 ◽  
Vol 37 (2) ◽  
pp. 434-445 ◽  
Author(s):  
A. E. Juve ◽  
P. W. Karper ◽  
L. O. Schroyer ◽  
A. G. Veith
Keyword(s):  
Standard Deviation ◽  
Shear Strain ◽  
Strain Gage ◽  
Processing Parameters ◽  
Graphical Form ◽  
Strip Chart Recorder ◽  
Strip Chart ◽  
Chart Recorder ◽  
Time Trace ◽  
Mooney Viscosity

Abstract This paper describes an apparatus that measures three important rubber processing characteristics—the compounded viscosity, the scorch time and the time to optimum cure. The apparatus is called a Viscurometer and consists of a heated die chamber and a drive mechanism to rotate a biconical rotor in an oscillatory manner through a fixed arc of ±6°. A strain gage torque pickup is mounted as an integral part of the drive shaft and the torque to impose the strain of ±6° (35% shear strain) is measured. The frequency of this oscillation is 2 per minute. A torque vs. time trace is recorded on a strip chart recorder. Data in graphical form are presented to show that the compounded viscosity of NR and SBR stocks correlates well with typical Mooney viscosity values. The scorch time, as measured with the Viscurometer, also correlates well with Mooney scorch values. The apparatus can be used to predict optimum cure for typical production SBR and NR stocks with a one standard deviation precision of ±2 minutes. The apparatus can also be used to predict the cured modulus at full cure (or any other percentage) under some conditions. This use of the Viscurometer is, however, more complex than its use to predict the previously mentioned processing parameters. The complexity of this use is illustrated for some typical NR and SBR stocks.

Nondestructive, Continuous Rapid Measurement and Control of Flock Density

1983 ◽  
Vol 105 (1) ◽  
pp. 11-15
Author(s):  
V. A. Semenov ◽  
S. P. Hersh ◽  
G. N. Mock ◽  
C. W. Malstrom
Keyword(s):  
Process Monitoring ◽  
Strip Chart Recorder ◽  
Nondestructive Technique ◽  
Rapid Measurement ◽  
Strip Chart ◽  
Recorded Signal ◽  
Chart Recorder ◽  
And Control ◽  
Measurement And Control

A nondestructive technique for rapidly and continuously measuring the density of flocked fabric was developed and used to continuously monitor an experimental flocking range. A sensing device measured the capacitance of a capacitor when the fabric with adhesive passed through it. This value was saved and compared with the value read when the flocked substrate passed through a second transducer downstream. A process monitoring computer received these signals and output a signal to a strip chart recorder proportional to the mass of flock on the substrate. The recorded signal could then be used to control the uniformity of flock deposition on the substrate.

Conversion of a variable-speed strip-chart recorder to a motor-driven syringe

1986 ◽  
Vol 63 (6) ◽  
pp. 554 ◽  
Author(s):  
Robert E. Gawley ◽  
Arthur F. Carlson
Keyword(s):  
Variable Speed ◽  
Strip Chart Recorder ◽  
Strip Chart ◽  
Chart Recorder
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