The phrase "determined at intervals" is grammatically correct and can be used in written English.
It means something that is decided or established periodically or at specific intervals. Example: The budget for the project was determined at intervals of six months, to account for any changes in expenses or unforeseen circumstances.
The protein concentration of the supernatant was determined at intervals.
At pH 7.5, the molecular weight (Mw) determined at intervals across the elution peak ranged from 440 kDa to 500 kDa.
The effects of adriamycin (Adr) on the solid-tumour model, hepatoma 3924A, and on critical organs of the host, were determined at intervals after single injections of 60 mg/m2 of the agent.
Cell densities were determined at intervals using a haemocytometer and generation times calculated using GraFit (version 5.0.13; Erithacus software) using the following equation: (5) N = N 0 2 t / g where N0 and N are the number of cells at time zero and time t, respectively, and g is the time per generation.
When the OD600 of the 1 100 dilution reached 0.8, the culture was incubated at 37°C with shaking at 250 rpm with various concentrations of OPP (Sigma-Aldrich, Inc., St Louis, MO) and the OD600 of the growth culture was determined at intervals of ten minutes for a total time of 60 minutes.
Albumin, bilirubin, and transaminase levels were determined at intervals during the course of disease: the early febrile period (days 1 3 of illness), the critical period for complications such as shock (days 4 6), and the convalescent period (days 7 10).
Postoperatively, SCr level and SCr clearance were determined at defined intervals, reported as highest postoperative SCr level, SCr level at time of discharge, lowest postoperative SCr clearance, and SCr clearance at time of discharge.
Different quality attributes such as physiological weight loss, volume reduction, firmness, total soluble solids, titratable acidity, color parameters, polyphenoloxidase and peroxidase values and anthocyanin contents were determined at regular intervals.
Electrodeposited PtNi catalysts were subjected to extensive potential cycling between 20 mV and 1.3 V at various Cl− concentrations and the cyclic voltammograms (CV) response and the oxygen reduction reaction (ORR) activity of the catalysts were determined at different intervals.
Plasma calcium and phosphate levels were determined at these intervals.
The amplitudes are determined at short intervals and marked with a point.
