In general, bubble column has the advantage for up-scale project as it can easily accommodate large volume, efficient contact between the gas and liquid phases, relatively low cost for setup and operating, well accepted for other industrial usage and minimal maintenance is required.
Those who want a door that requires minimal maintenance while providing maximum security, Mr. Campbell said, might want to look at a steel door.
Although designing, deploying, and migrating to Linux-based messaging services can require some effort, these services usually function reliably and require minimal maintenance over the long term.
The Hydro-Brake is automatic, uses no power and requires minimal maintenance.
It has a design life of 20 years, with services every five years, and requires minimal maintenance.
Made from sturdy "mircro-closed polymer resin", they never burst or even go down, so require minimal maintenance.
With simple-to-use equipment that requires minimal maintenance, the Cambridge-wide network could be inexpensive and grow organically.
Kyrman Harvey, 37, a local designer, volunteered his services, and the three gardens on view are his creations; predominately casual gardens that feature a variety of shrubs and perennials and require minimal maintenance.
Solar water heating is not only environmentally friendly but requires minimal maintenance and operation cost compared to other solar energy applications.
These findings indicated that RS OCBs can be used to construct a low-cost treatment system that requires minimal maintenance and can be easily integrated into drainage ditches to reduce nutrient export from agricultural areas.
