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With ball mill extraction, an extraction vessel containing the extractant (dried, powdered) sample and stainless steel balls is placed on a rotor/stator element and, due to the high rotation speed of the rotor, the sample is drawn into the dispersion head and forced through the rotor/stator arrangement.
An extraction vessel was placed in microwave irradiation zone of the TM010 microwave resonance cavity.
A silica gel column connected with the extraction vessel was used to remove chlorophyll in tea.
A simple glass system equipped with an air-cooled condenser was designed as an extraction vessel.
The supercritical fluid extractor was modified to be able to pump liquid solvent and CO2 into the extraction vessel alternatively.
In SFE SSME procedure, the dehydrated samples were loaded into SFE extraction vessel and extraction was performed in a prescribed time.
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Because laboratory or pilot plant runs in single-extraction-vessel units cannot produce the simulated countercurrent contact in an industrial plant having ≥3 extraction vessels, mathematical simulation provides the relationship between oil yield and extraction time that can anchor precise estimations of extraction cost.
Analytes were simultaneously derivatized with acetic anhydride in presence of triethylamine (TEA), and extracted from the sample in a mixture of n-hexane acetone using a microwave system equipped with closed extraction vessels.
Then, using semi-empirical engineering scaling criteria (constant solvent lineal velocity or constant solvent residence time) and the Broken and Intact Cell (BIC) model, the scaling up to larger extraction vessels (1.35 × 10−3 m3 and 5.16 × 10−3 m3) was theoretically investigated.
Six drugs were successfully extracted from human hair with recoveries close to 100% and good reproducibility (<3.6% RSD) under the optimal MAE conditions: 11 mL dichloromethane (DCM) extraction solvent, 60 °C extraction temperature, 9 min extraction time and 0.5 mL of methanol (MeOH) added to 50 mg of the hair sample in the extraction vessels.
Tissue samples (10 15 mg accurately weighed) placed into a 1.5-mL centrifuge tube were mixed with 150 μL of 12% acetic acid and then sonicated for approximately 20 min. The centrifuge tubes were placed in high-pressure microwaveable Teflon extraction vessels (CEM HP500; CEM Corp., Matthews, NC) and heated in a microwave digestion/extraction system (CEM MARS; CEM Corp).
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