Comparison of color measurement instruments in the characterization of color output

1994 ◽  
Author(s):  
Iain T. Pike ◽  
David R. Bowden
Keyword(s):  
Color Measurement ◽  
Measurement Instruments

Practical comparison of various color measurement instruments in open color management applications

1995 ◽  
Author(s):  
Mike DiCosola ◽  
Iain T. Pike ◽  
David R. Bowden ◽  
Franz H. Herbert ◽  
Dan Caldwell
Keyword(s):  
Color Measurement ◽  
Color Management ◽  
Measurement Instruments

Characterization of Aviation Soot Emissions With a High-Pressure Gas Turbine Combustor Rig

2014 ◽  
Author(s):  
David S. Liscinsky ◽  
Zhenhong Yu ◽  
Archer Jennings ◽  
Jay Peck ◽  
Bruce True ◽  
...  
Keyword(s):  
Geometric Mean ◽  
Field Measurements ◽  
Aircraft Engine ◽  
Average Density ◽  
Aircraft Engines ◽  
Measurement Instruments ◽  
Ambient Conditions ◽  
Commercial Aircraft ◽  
Emission Index

Characterization of particulate matter (PM) emissions from commercial and military aircraft engines is a costly procedure, usually influenced by a number of uncontrollable technical issues such as ambient conditions. In this study we demonstrated that a research sector rig representing an aircraft engine combustor can be used to evaluate PM emissions, such as carbonaceous soot, in a well-controlled manner. PM emissions in terms of mass and number, as well as particle size distribution and optical properties, were characterized and quantified with a variety of state-of-the-art measurement instruments. Compared to previously published measurements on advanced commercial aircraft engines (CFM56-7B22), the measured emission index of black carbon soot was 58±3 mg/kg-fuel at simulated higher power conditions, consistent within 25% of field measurements. Measurements of number emission index were within a factor of 2 and geometric mean diameter was between 25 and 35nm again similar to field measurements on engines. Based on the measurements on particle mass and size, the mass mobility exponent of the soot particles had a lower limit of 2.4 indicating near-sphericity and an average density near 1 g/cm3.

scholarly journals Sensor for the Characterization of 2D Angular Actuators with Picoradian Resolution and Nanoradian Accuracy with Microradian Range

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7034
Author(s):  
Marco Pisani ◽  
Milena Astrua ◽  
Srijith Bangaru Thirumalai Raj
Keyword(s):  
High Precision ◽  
Deflection Angle ◽  
Measurement Range ◽  
Practical Realization ◽  
Measurement Instruments ◽  
Actual Performance ◽  
Working Principle ◽  
The Deflection Angle

High precision angular actuators are used for high demanding applications such as laser steering for photolithography. Piezo technology allows developing actuators with a resolution as low as a few nanoradians, with bandwidths as high as several kilohertz. In most demanding applications, the actual performance of these instruments needs to be characterized. The best angular measurement instruments available today do not sufficient resolution and/or bandwidth to satisfy these needs. At the Istituto Nazionale di Ricerca Metrologica, INRIM a device was designed and built aiming at characterizing precision 2D angular actuators with a resolution surpassing the best devices on the market. The device is based on a multi reflection scheme that allows multiplying the deflection angle by a factor of 70. The ultimate resolution of the device is 2 prad/√Hz over a measurement range of 36 µrad with a measurement band >10 kHz. The present work describes the working principle, the practical realization, and a case study on a top-level commercial angular actuator (Nano-MTA2 produced by Mad City Labs).

scholarly journals DESIGN AND CHARACTERIZATION OF ACOUSTIC COMPARISON COUPLER AS A PORTABLE CALIBRATION MEDIA AND MECHANICAL SOUND SOURCE FOR CALIBRATION OF ACOUSTIC MEASUREMENT INSTRUMENTS

Instrumentasi ◽  
2021 ◽  
Vol 45 (1) ◽  
pp. 1
Author(s):  
Bondan Dwisetyo ◽  
Dodi Rusjadi ◽  
Chery Chaen Putri ◽  
Maharani Ratna Palupi ◽  
Fajar Budi Utomo ◽  
...  
Keyword(s):  
Sound Source ◽  
Acoustic Measurement ◽  
Measurement Instruments

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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