Results 1 to 10 of about 50,761 (253)

Optofluidic Lens Refractometer [PDF]

open access: yesMicromachines
In the face of increasingly severe global environmental challenges, the development of low-cost, high-precision, and easily integrable environmental monitoring sensors is of paramount importance.
Yifan Zhang   +7 more
doaj   +2 more sources

Effect of Blood Sampling Time After Colostrum Intake on the Concentration of Metabolites Indicative of the Passive Immunity Transfer in Newborn Dairy Calves [PDF]

open access: yesAnimals
Due to the synepitheliochorial placental structure, bovines show no maternal antibody flow from mother to fetus during pregnancy, resulting in an agammaglobulemic newborn [...]
Mohammad Hassan Mortazavi   +6 more
doaj   +2 more sources

Proposal for a New Differential High-Sensitivity Refractometer for the Simultaneous Measurement of Two Refractive Indices and Their Differences [PDF]

open access: yesSensors
The refractive index of a liquid serves as a fundamental parameter reflecting its composition, thereby enabling the determination of component concentrations in various fields such as chemical research, the food industry, and environmental monitoring ...
Šimons Svirskis   +2 more
doaj   +2 more sources

On-farm approaches to increase whole-milk total solids: Effects on performance and health of dairy calves [PDF]

open access: yesJDS Communications
This study aimed to evaluate the performance, metabolism, and health of Holstein calves fed whole milk adjusted for 15% TS by adding a commercial solids corrector (245 g/kg CP, 48 g/kg crude fat, 90 g/kg of mineral, and 3 g/kg of ADF) using 2 practical ...
Amanda M. Cezar   +7 more
doaj   +2 more sources

Comparison of biuret and refractometery method for serum total protein measurements in cattle and goat [PDF]

open access: yesBMC Research Notes
Objectives The biuret method is frequently used to determine serum total protein. On the other hand refractometer, a quicker and less expensive option, is available to determine serum total protein.
Sileshi Mesele Mesa   +1 more
doaj   +2 more sources

Determining Immunoglobulin Content of Bovine Colostrum and Factors Affecting the Outcome: A Review

open access: yesAnimals, 2021
The immunoglobulin concentration in bovine colostrum should be measured to ensure feeding with sufficient immunoglobulins (≥50 mg immunoglobulin G mL−1).
Johanna Ahmann   +2 more
doaj   +1 more source

Comparison between the Brix Refractometer and ELISA for Assessment of Colostrum IgG of Montbeliard x Holstein Cross Dairy Cows

open access: yesTropical Animal Science Journal, 2021
The objectives of the present study were to examine the association between the brix refractometer% and ELISA assays in the assessment of colostrum-IgG content and in studying the factors affecting this content.
N. H. Fahim, T. A. Imbabi
doaj   +1 more source

Ultra-Long Range Refractive Index Fiber Sensor

open access: yesFrontiers in Sensors, 2022
The dynamic range of optical fiber refractive index sensors is mainly determined by the refractive index (RI) of the sensor surface in contact with the sample under test.
Carmen E. Domínguez-Flores   +5 more
doaj   +1 more source

Optofluidics Refractometers [PDF]

open access: yesMicromachines, 2018
Refractometry is a classic analytical method in analytical chemistry and biosensing. By integrating advanced micro- and nano-optical systems with well-developed microfluidics technology, optofluidics are shown to be a powerful, smart and universal platform for refractive index sensing applications.
Cheng Li   +4 more
openaire   +3 more sources

Evaluation of Factors Affecting Colostrum Quality and Quantity in Holstein Dairy Cattle

open access: yesAnimals, 2021
The objective of this study was to conduct a large-scale investigation of colostrum composition and yield and an evaluation of factors affecting them. In this study, 1017 clinically healthy Holstein cows from 10 farms were used.
Aikaterini Soufleri   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy