نتایج جستجو برای: refractometry

تعداد نتایج: 325  

2006

High precision measurement of dissolved solids (Brix) in soft drinks and juices is an important element of quality control (QC) and quality assurance (QA). There are in principle many ways to measure dissolved solids, but refractometry and density-based methods are most commonly used for this purpose. Whichever method is selected, there are advantages, disadvantages and limitations. This paper ...

2017

Flowmetry. Fluid-flow measurement and visualisation ................................................................................ 1 Measuring mass flow-rate ......................................................................................................................... 2 Accumulative weighting .............................................................................................

Journal: :The Journal of biological chemistry 1967
M E Noelken S N Timasheff

Bovine serum albumin, in aqueous guanidine hydrochloride, interacts preferentially with the solvent components, as was shown by techniques in which refractometry and light scattering and equilibrium dialysis were used. If constant salt molality after dialysis is taken as the reference state for zero binding, then 0.08 f 0.03 and 0.18 f 0.05 g of salt per g of protein is bound at 3 M and 6 M sal...

Journal: :Lab on a Chip 2021

The 3D-cascade-microlens optofluidic chip (3DCMOC) functions as a simple-to-fabricate and sensitivity-adjustable refractometer.

2015
Yuan Yuan Hu Jian Feng Wu Tai Liang Lu Hui Wu Wei Sun Xing Rong Wang Hong Sheng Bi Jost B. Jonas

PURPOSE To determine the effect of 1% cyclopentolate on the refractive status of children aged 4 to 18 years. METHODS Using a random cluster sampling in a cross-sectional school-based study design, children with an age of 4-18 years were selected from kindergardens, primary schools, junior and senior high schools in a rural county and a city. Auto-refractometry was performed before and after ...

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