The phrase "at a total amount of" is correct and usable in written English.
It can be used when specifying a complete sum or total in a financial or quantitative context.
Example: "The project was completed at a total amount of $50,000."
Alternatives: "for a total of" or "amounting to".
We recently performed a NEMA count rate linearity test of the PET-MR scanner as part of the scanner's acceptance procedure, starting at a total amount of radioactivity of 950 MBq.
While the German statutory health insurance covers individuals at all ages, Medicare in the USA mainly covers the elderly, at a total amount of approximately US$300 billion in 2004.
This column was conditioned with 3 × 1 ml acetonitrile (ACN) plus 0.1% v/v FA, and re-equilibrated with 3 × 1 ml 0.1% v/v FA before application of the samples at a total amount of maximum 1 mg total protein per column.
Samples were injected at a total amount of 1 µg using the microliter-pickup system using 0.1% v/v FA as transport liquid from a cooled autosampler (5°C) and loaded onto a trap column (µ-precolumn cartridge, Acclaim PepMap100 C18, 5 µm, 100 Å, 300 µm id, 5 mm Dionex, Thermo Fisher Scientific, Waltham, MA).
These scenarios rendered the following results: Biogas is produced only at location 1 with a total amount of 751,000 m3 CH4 per year, using two digesters (both f7).
At the end of phase II, a total amount of 10,023 g dehydrated LTWS (~2,706 g DM LTWS) and 320 ml of enzyme preparation was added to the fermenter.
(ii) The harvested C. variabile cells were lysed in 0.7 ml 10% (w/v) SDS solution at 37°C for 15 min. A total amount of 5 μg of purified genomic DNA was used for constructing a single-stranded template DNA library.
Cell lines were cultured in RPMI1640 with GIBCO GlutaMAX™ (Invitrogen) with 10% Fetal Bovine Serum "GOLD" (PAA Laboratories, Austria) and 1.5% PenStrep (Roth, Karlsruhe, Germany) in 25 mL and 75 mL BD Falcon™ flasks at 37°C and 5% CO2 in a total amount of 10 mL and 30 mL, respectively.
Ewes were housed individually indoors in an 8′ × 4′ pen and offered feed twice a day at 2.5%% of body weight for a total amount of 2.64 kg of feed/day (0.312 kg supplement, 0.441 kg mixed grain, 0.630 kg chopped hay and 1.261 kg alfalfa pellet) with average feed intake of 2.53 kg of feed/day in the FM group and 2.59 kg of feed/day in the SM group during gestation.
In comparison with a nominally pure Ni (99.9945%), the presence of a total amount of <0.5 at.% impurities of Mn, Fe and Si in the Ni increased the penetration length by six times when a near-equilibrium Bi Ni liquid was applied; when an initially pure Bi liquid was applied, this increment further enlarged to ∼20 times in the initial penetration stage.
Thus, assuming complete uptake of H2S during ventilation of the ECML at a gas flow of 5 l/min with 300 ppm H2S (at standard conditions for temperature and pressure), a total amount of 1.5 ml of H2S (that is, approximately 67 μM) are administered via the membrane every minute.
