scholarly journals Development of a fast and reliable system for the automatic characterization of Giant magnetoimpedance samples

ACTA IMEKO ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 21 ◽  
Author(s):  
Eduardo Costa da Silva ◽  
João Henrique Costa Carvalho Carneiro ◽  
Luiz Antônio Pereira de Gusmão ◽  
Carlos Roberto Hall Barbosa ◽  
Elisabeth Costa Monteiro
Keyword(s):  
High Speed ◽  
Electrical Impedance ◽  
Rapid Determination ◽  
Reliable System ◽  
Giant Magnetoimpedance ◽  
Critical Part ◽  
Measurement Uncertainties ◽  
Giant Magneto Impedance

Giant Magnetoimpedance (GMI) magnetometers are one of the most recent families of magnetic transducers, being characterized by their potential to achieve high sensitivities. The sensitivity of magnetic transducers is directly related to the sensitivity of its sensor elements. Thus, optimizing the sensitivity of these sensor elements is a critical part of the magnetometers development chain. This paper describes an automatic characterization system designed for the measurement of the electrical impedance of Giant Magneto- Impedance samples. The measurement uncertainties of the system were verified and discussed. The high speed of measurement attained with the use of this system, implemented in LabVIEW, allows for the rapid determination of the optimal operational point of GMI magnetometers.

scholarly journals Carbon Dioxide Snow Cleaning of Paper

2021 ◽  
Author(s):  
Ludmila Maskova ◽  
Jiri Smolik ◽  
Petra Vavrova ◽  
Jitka Neoralova ◽  
Magda Souckova ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Adverse Effects ◽  
High Speed ◽  
Suitable Method ◽  
Cleaning Efficiency ◽  
Dry Cleaning ◽  
Paper Surface

Abstract Cleaning of particles from smooth and rough paper surfaces was investigated using a high-speed CO2 snow jet. The measurements included characterization of the jet properties, determination of the cleaning efficiency, and evaluation of the possible adverse effects. The method was compared with the nitrogen jet cleaning and the dry cleaning by commercial materials. The results showed that the CO2 snow jet is able to effectively remove particles from the paper surface and did not cause any observable degradation. The CO2 snow jet cleaning compared with the mechanical dry cleaning showed similar effectiveness without any adverse effects on the paper surface. It was proved that the CO2 snow technique is a suitable method for cleaning of common types of paper materials.

scholarly journals Advancements in Techniques for Calibration and Characterization of In Situ Optical Particle Measuring Probes, and Applications to the FSSP-100 Probe

2007 ◽  
Vol 24 (5) ◽  
pp. 745-760 ◽  
Author(s):  
Dagmar Nagel ◽  
Uwe Maixner ◽  
Walter Strapp ◽  
Mohammed Wasey
Keyword(s):  
High Speed ◽  
Sample Volume ◽  
Absolute Calibration ◽  
Droplet Generator ◽  
Measuring Systems ◽  
Distortion Matrix ◽  
Measured Particle

Abstract Advancements in techniques for the operational calibration and characterization of instrument performance of the Particle Measuring Systems, Inc. (PMS), forward scattering spectrometer probe (FSSP) and optical array probes (OAPs) are presented, which also can be used for most in situ particle-measuring optical probes on the market. These techniques include the determination of a distortion matrix to correct for instrumental broadening of the measured particle size distribution. A new version of a monodisperse droplet generator is introduced for absolute calibration in the size range between 10 and 100 μm. In addition, a high-speed technique was employed for the determination of airspeed influence on the sample volume and the sizing of particles. The calibration of a PMS FSSP with real water droplets may be significantly different from the usual calibration with glass beads. High-speed measurements simulate particles at speeds of up to about 250 m s−1. Particle undersizing and the decrease of the sample volume with increasing airspeed are described. The use of the modular tools, built for this work, is discussed for probe alignment, functionality checks, and general characterization and diagnostics both in laboratory and field environments.

scholarly journals Rapid determination of the aromatic compounds methyl-anthranilate, 2′-aminoacetophenone and furaneol by GC-MS: Method validation and characterization of grape derivatives

2018 ◽  
Vol 107 ◽  
pp. 613-618 ◽  
Author(s):  
Maria da Conceição Prudêncio Dutra ◽  
Joyce Fagundes de Souza ◽  
Arão Cardoso Viana ◽  
Débora de Oliveira ◽  
Giuliano Elias Pereira ◽  
...  
Keyword(s):  
Method Validation ◽  
Aromatic Compounds ◽  
Rapid Determination ◽  
Methyl Anthranilate

scholarly journals Rapid determination of flavonoids and phenolic acids in grape juices and wines by RP-HPLC/DAD: Method validation and characterization of commercial products of the new Brazilian varieties of grape

2017 ◽  
Vol 228 ◽  
pp. 106-115 ◽  
Author(s):  
Carla Valéria da Silva Padilha ◽  
Gabriela Aquino Miskinis ◽  
Marcelo Eduardo Alves Olinda de Souza ◽  
Giuliano Elias Pereira ◽  
Débora de Oliveira ◽  
...  
Keyword(s):  
Method Validation ◽  
Phenolic Acids ◽  
Rapid Determination ◽  
Commercial Products ◽  
Rp Hplc ◽  
Grape Juices

Rapid determination of stress factors and absolute residual stresses in thin films

2006 ◽  
Vol 39 (6) ◽  
pp. 777-783 ◽  
Author(s):  
K. J. Martinschitz ◽  
E. Eiper ◽  
S. Massl ◽  
H. Köstenbauer ◽  
R. Daniel ◽  
...  
Keyword(s):  
Thin Films ◽  
Rapid Determination ◽  
Absolute Magnitude ◽  
Stress Factors ◽  
Experimental Stress ◽  
Absolute Residual ◽  
Mechanical Sensor ◽  
Steel Substrates

A methodology is presented that allows the determination of experimental stress factors in thin films on the basis of static diffraction measurements. The approach relies on the characterization of thin films deposited on a monocrystalline substrate serving as a mechanical sensor. Rocking-curve measurements of the symmetrical reflections of the substrate are used to determine the substrate curvature and subsequently the macroscopic stress imposed on the film. The elastic strain in the film is determined by lattice-spacing measurement at different sample tilt angles. The calculated experimental stress factors are applied to thin films deposited on other types of substrates and are used to determine the absolute magnitude of the residual stress. The approach is applied to nanocrystalline TiN and CrN thin films deposited on Si(100) and steel substrates, characterized using a laboratory-type θ/θ goniometer.

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