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T5 retrofit conversion can maintain existing lighting levels with the higher efficiency of the T5 lamp. However, with kits that operates the lamp on the existing magnetic ballast, the efficiency drops and the lamp life is considerably shortened, as T5 lamps aren't designed to be operated on mains frequency but only on high frequency.
Users can give a review a "thumbs-up" rating, which will cause it to be ranked higher in the review listings. [95] Each day a "Review of the Day" is determined based on a vote by users. [96] According to The Discourse of Online Consumer Reviews many Yelp reviewers are internet-savvy adults aged 18–25 or "suburban baby boomers". [179]
Retrofitting is the addition of new technology or features to older systems. Retrofits can happen for a number of reasons, for example with big capital expenditures like naval vessels, military equipment or manufacturing plants, businesses or governments may retrofit in order to reduce the need to replace a system entirely.
Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes.With better understanding of seismic demand on structures and with recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged.
On July 20, 2008, Facebook introduced "Facebook Beta", a significant redesign of its user interface on selected networks. The Mini-Feed and Wall were consolidated, profiles were separated into tabbed sections, and an effort was made to create a cleaner look. [66] Facebook began migrating users to the new version in September 2008. [67]
The business review platform went remote like many other organizations when the pandemic hit, but unlike so many others, it stayed that way and introduced a remote-first policy in 2021.
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