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Pump Condition Monitoring Guidelines
Published in Heinz P. Bloch, Allan R. Budris, Pump User’s Handbook, 2021
Heinz P. Bloch, Allan R. Budris
New intelligent pump solutions have continued to evolve thanks to the rapid advancement of electronic data processing and communications. What not long ago was thought to be too expensive, not reliable, and technically not possible, is rapidly becoming a reality. Technological advances in devices such as digital signal processors and wireless communication systems are enabling the development of effective intelligent pump solutions. These devices can be decentralized systems, local to the pump and outside of the main distributive control system, and can contain algorithms that have been developed to provide intelligent solutions, specifically designed for a unique class of pumps or application.
Combined effects of sunlight and tempering treatment on the oligomeric procyanidin formation in dried ume (Prunus mume Sieb. et Zucc.)
Published in Drying Technology, 2022
Fu-Yuan Ma, Tzou-Chi Huang, Pratik Nayi, Ho-Hsien Chen
Analysis of procyanidin Compounds was conducted using HITACHI high-performance liquid chromatography (HPLC, Tokyo-Japan) consisting of L-2130 intelligent pump with L-2200 autosampler. The separation was achieved using the ODS Hypersil LC-18 HPLC column (25 cm × 4.6 mm, 5 µm size particle) (Thermo Scientific, USA). The mobile phase was composed of a mixture of solvent A (95% AeCN + 0.01% formic acid) and solvent B (5% AeCN+ 0.01 formic acid). The gradient program was as followed by 90% B from 0–5 min; 90–85% B from 5–7 min; 85-80% B from 7–13 min; 80–75% B from 87–80 min; 75–70% B from 20–30 min; 70–20% B from 70–65 min, and 90% B from 35–40 min then returning to initial conditions. Detection was carried out with the L-2420 UV/Vis detector at 280 nm. Quantification of the compounds was done using (–)-epicatechin as the external standard.