Results 11 to 20 of about 50,761 (253)

A Study of the Lossy Mode Resonances during the Synthesis Process of Zinc Telluride Films

open access: yesSensors, 2022
Films of zinc telluride (ZnTe) were deposited on the surface of a chemically thinned section of an optical fiber by metalorganic chemical vapor deposition. The boundary values of temperatures and the concentration ratios of the initial tellurium and zinc
Petr I. Kuznetsov   +2 more
doaj   +1 more source

A CMOS Image Sensor Based Refractometer without Spectrometry

open access: yesSensors, 2022
The refractive index (RI), an important optical property of a material, is measured by commercial refractometers in the food, agricultural, chemical, and manufacturing industries.
Haechang Yang   +6 more
doaj   +1 more source

Genetic Parameters of Serum Total Protein Concentration Measured with a Brix Refractometer in Holstein Newborn Calves and Fresh Cows

open access: yesAnimals, 2023
The objective was to estimate the genetic parameters of serum total protein concentration in newborn calves (calfSTP) and post parturient dairy cows (cowSTP). The study included 1013 calves and 989 cows from 10 dairy farms.
Aikaterini Soufleri   +6 more
doaj   +1 more source

Colostrum Quality Assessment in Dairy Goats: Use of an On-Farm Optical Refractometer

open access: yesBiology, 2023
Failure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer of passive immunity, kids need to be fed high-quality colostrum, containing an adequate ...
Carlos C. Pérez-Marín   +6 more
doaj   +1 more source

ANALYSIS OF QUALITATIVE INDICATORS OF CIDER, DEPENDING ON TECHNOLOGICAL MODES

open access: yesСовременная наука и инновации, 2022
Low alcohol drinks made from natural raw materials are widespread throughout the world, well-known examples are wine and cider. Indicators such as sugar and alcohol in the manufacturing process are important. As a result, research in this area presents a
Y. A. Timanovskiy, M. O. Moskalev
doaj   +1 more source

Development and Application of Devices Based on Surface Plasmon Resonance

open access: yesКібернетика та комп'ютерні технології, 2020
Introduction. The purpose of the SPR sensor is to quickly and accurately determine the refractive index of the environment with the ability to diagnose the presence of a specific substance.
T.S. Lebyedyeva   +5 more
doaj   +1 more source

Photonic crystal fiber half-taper probe based refractometer [PDF]

open access: yes, 2014
A compact singlemode - photonic crystal fiber - singlemode fiber tip (SPST) refractive index sensor is demonstrated in this paper. A CO2 laser cleaving technique is utilised to provide a clean-cut fiber tip which is then coated by a layer of gold to ...
Bo, Lin   +8 more
core   +2 more sources

Refractometric Properties of a TFBG Sensor Demodulated Using α-Shape Modified Delaunay Triangulation

open access: yesOptics, 2021
In our previous research, a novel demodulation technique based on α-shape Delaunay triangulation (D-T) was developed to obtain the refractive index of the medium surrounding the optical fibre using the envelope of the cladding peaks from the spectrum of ...
Luigi Fazzi, Roger M. Groves
doaj   +1 more source

HandyRef-K: Comparison of the Latest Handheld Auto Refracto-keratometer with Retinomax and Plusoptix in Patients Younger than Three Years of Age

open access: yesBeyoglu Eye Journal, 2019
INTRODUCTION[|]The purpose of the study was to compare the refractive error measurements of pediatric patients performed with a Plusoptix A09 photorefractor (PO; Plusoptix AG, Nuremberg, Germany), a Retinomax K-plus 3 (RTX; Right Group, Tokyo, Japan ...
Zeynep Seymen   +7 more
doaj   +1 more source

Validation of a handheld refractometer to assess Merino ewe colostrum and transition milk quality

open access: yesJournal of Dairy Science, 2023
: Colostrum quality is generally defined by the IgG concentration in colostrum, and many methods have been used to assess it. Methods to measure colostrum quality both in the laboratory and in the field have been validated in cattle; however, this is ...
Bianca Agenbag   +3 more
doaj   +1 more source

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