Results 41 to 50 of about 51,080 (243)

SETUP AND CALIBRATION OF THE RADIOREFRACTOMETER FOR MEASUREMENT OF THE ATMOSPHERIC REFRACTIVE INDEX [PDF]

open access: yesРадиофизика и электроника, 2016
The most accurate information on the dielectric structure of the atmosphere can be obtained by radiorefractometers. These devices are essential when measuring a fine structure of the refractive index of the medium under investigation.
V. A. Kabanov
doaj   +1 more source

Refractometric Sensing with Periodic Nano-Indented Arrays: Effect of Structural Dimensions

open access: yesSensors, 2019
Fabrication and sensor application of a simple plasmonic structure is described in this paper. The sensor element consists of nano-patterned gold film brought about from two-dimensional periodic photoresist templates created by holographic laser ...
Daniel J. Carney   +5 more
doaj   +1 more source

An optical fiber hydrogen sensor using a palladium-coated ball lens [PDF]

open access: yes, 2015
A self-referenced optical fiber refractometer using a ball lens as a sensor head has been developed and characterized. A 350-μm ball lens created at the tip of a single mode fiber has been coated with a 40-nm optically thin layer of palladium that reacts
Brooks, Simon J.   +7 more
core   +1 more source

Review of acoustical and optical techniques to measure absolute salinity of seawater

open access: yesFrontiers in Marine Science, 2022
The salinity of seawater is of fundamental importance in climate studies, and the measurement of the variable requires high accuracy and precision in order to be able to resolve its typically small variations in the oceans with depth and over long-time ...
Marc Le Menn, Rajesh Nair
doaj   +1 more source

Risk Factors for and Prevalence of Failure of Passive Transfer of Immunity in Calves on Dairy Farms in Türkiye. [PDF]

open access: yesVet Med Sci
The prevalence of FPTI in this study was similar to reports internationally. This research shows that there were both modifiable and non‐modifiable significant risk factors for FPTI in Türkiye dairy herds, specifically colostrum feeding method and season of birth and herd size, dam parity and calf breed.
Sağlam N   +6 more
europepmc   +2 more sources

A new method for describing the change of the laser beam axis trajectory in the Anderson differential cuvette to measure the refractive index of liquids

open access: yesКомпьютерная оптика
We substantiate the necessity of developing a small-sized refractometer with Anderson's differential cuvette for the highly accurate rapid check of the state of liquid media in real time.
V.V. Davydov   +3 more
doaj   +1 more source

Evaluation of Different Methods to Estimate the Transfer of Immunity in Donkey Foals Fed with Colostrum of Good IgG Quality: A Preliminary Study

open access: yesAnimals, 2021
The aims of the present study were to evaluate the correlation between IgG Serum Radial Immunodiffusion (SRID), Electrophoresis Gamma Globulins (EGG), Electrophoresis Total Protein (ETP) and the serum total protein (TP) analyzed by refractometry and by a
Luca Turini   +5 more
doaj   +1 more source

Final report : benthic samples taken from the Padre Island National Seashore [PDF]

open access: yes, 1992
From March 1989 through January 1992 sediment samples were taken from subtidal areas within the boundary of the Padre Island National Seashore. These samples were taken as part of a large multidisciplinary study to determine how a hot, hypersaline ...
Montagna, Paul A.
core   +1 more source

Evaluation of colostrum quality in the Czech Republic using radial immunodiffusion and different types of refractometers

open access: yesVeterinární Medicína, 2019
The objectives of this study were to determine the immunoglobulin G concentration of colostrum in Czech dairy cows, to compare refractometer results with results achieved using the radial immunodiffusion method and to evaluate the reliability of three ...
Alena Pechova   +4 more
doaj   +1 more source

A spatial refractive index sensor using whispering gallery modes in an optically trapped microsphere [PDF]

open access: yes, 2006
We propose the use of an optically trapped, dye doped polystyrene microsphere for spatial probing of the refractive index at any position in a fluid. We demonstrate the use of the dye embedded in the microsphere as an internal broadband excitation source,
Mosk, Allard   +3 more
core   +3 more sources

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