According to Idustry Week, No. 2, 2009, the third generation of active tags called Ubiquitous Sensor Network (USN) emerged again. This tag is also called "wireless sensing." "The Wireless Sensor Network (WSN), which features a reader, the so-called "mesh network" used to select sensors on each tag, and the number of tags doubled. The reading range of the third-generation tag may be only 30 meters. The tag looks more like a decade ago. The tag can even use common alkaline batteries. However, the third-generation tag features a system that can be upgraded and can be self-repaired. More robust and expanded functionality.
Active tags occupy an important position in the electronic label industry. Compared with passive tags, its replacement is slow, bulky, and costly, but it is far from reading and writing. As a result of decades of development, active tags have finally entered the third generation.
The first generation of active electronic tags uses common battery power. Compared with passive tags, active tags are characterized by the ability of the tags to emit their own signals through built-in energy sources, and the signals travel farther. The second generation of active tags is called a real-time location system (RTLS). With the use of a large number of transmitters, people or objects within a distance of 30-300 meters can be continuously positioned. With the advent of this new positioning technology, the development of active tags has entered a leap-forward development stage.
Modern shave brushes are similar in appearance, composition and function to their centuries-old predecessors. Although a variety of different materials are still used to fashion shave brush handles, synthetic handles of nylon, urethane or plastic are the most common even with the most expensive shave brush manufacturers. Benefits of synthetic handles include a lesser chance of breakage and resistance to damage by moisture.
A shave brush's price is usually determined more by its bristle load than any other factor, except for brushes with very exotic handles. The most expensive brushes often use exotic materials in the handle. The bristles are fixed together into a knot that is installed into the handle. The best quality brushes are hand knotted. Badger and boar brushes are the most commonly found animals used for Shaving Brush fibers. Badger species include the Eurasian and the hog badger.
Badger brushes are often referred to as two band, or three band. Perhaps all badger hair fibers have three bands, but those used in the brushes conceal the lighter bottom band. Nonetheless, both types of bristle make desirable shaving brushes. Lower-quality brushes are often machine made and the bristles may be trimmed, resulting in sharp, prickly tips.
Best badger are brushes made with the finer and more pliable hairs from 20 - 25% of the badger's body. It is longer in length and lighter in color than 'pure' badger hair. A 'best' badger brush is more densely filled with hair than the 'pure' badger brush and will produce a correspondingly greater lather. However, some wet shavers argue that the variance between the quality of a 'pure' and a 'best' badger brush is negligible. Best badger and better quality brush hairs are often fit so that the ends do not have to be cut to shape.
Synthetic shave brushes, most often made using nylon bristles, are available in a range of prices and gradations in quality. Comparable to traditional shaving brushes, synthetic fiber brushes can quickly create a rich lather using relatively little shaving soap or cream. The synthetic fibers dry faster than natural hair and are less sensitive to everyday use.
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