periodically
81Khagol Mandal — is an organization of amateur astronomers in Mumbai, India. Established in 1985 by handful of astronomy enthusiasts, the organization has grown into a membership of 1000+ within past 24 years. Khagol Mandal will be completing 25 years in 2009.… …
82Shape moiré — is one type of moiré patterns demonstrating the phenomenon of moiré magnification [cite paper title = Optical inspection of arrays and periodic structures using moire magnification author = M.C. Hutley coauthors = R.F. Stevens publisher = IEE… …
83Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… …
84Textile preservation — refers to the processes by which textiles are cared for and maintained to be preserved from future damage. The field falls under the category of art conservation as well as library preservation, depending on the type of collection. In this case,… …
85USS Staunch (AM-307) — was a steel hulled Admirable Class Minesweeper built for the U.S. Navy during World War II. Her crew was quickly trained in the art of minesweeping and then sent to the Pacific Ocean to clear dangerous mine fields so that Allied troops could land …
86Reptile scales — Reptile skin is covered with scutes or scales which, along with other characteristics, distinguish reptiles from animals of other classes (except fishes). The family Amphisbaenidae, which has naked skin, is the sole exception. Scales are made of… …
87The Carrion Fields — is a multi user dungeon created by Yuval Oren (Derit), Matt Hamby (Rahvin/ShaidarHaran/BoltThrower) and Barbara Hargrove (Galadriel/Nordewin) in January 1994. Based on ROM 2.3, it first opened to the public on March 17th, 1994. The past thirteen… …
88History of Buddhism in Cambodia — Suvannabhumi= King Asohka sent missionaries to the land of Suvannabhumi (Suwannaphum), which has sometimes been identified as the mainland southeast Asian region of the Mon kingdoms of southern Thaton in Burma, central Thailand and Issan. The… …
89History of Jews in Opatów — This article documnents the history of Jews in OpatówJewish life in 16th century OpatówIt seems that Jews first settled in Opatów in the 16th century, but only in the 1630s is there mention in writing of the “Jews Street” (or “The Jews Town”),… …
90Automatic dependent surveillance-broadcast — (ADS B) is a cooperative surveillance technique for air traffic control and related applications. An ADS B out equipped aircraft determines its own position using a global navigation satellite system and periodically broadcasts this position and… …
