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Alibaba Group Holding Limited, branded as Alibaba (/ ˌ æ l i ˈ b ɑː b ə, ˌ ɑː-/), is a Chinese multinational technology company specializing in e-commerce, retail, Internet, and technology.
Gamma-ray sensors are also used for measuring the fluid levels in water and oil industries. [17] Typically, these use Co-60 or Cs-137 isotopes as the radiation source. In the US, gamma ray detectors are beginning to be used as part of the Container Security Initiative (CSI). These machines are advertised to be able to scan 30 containers per hour.
[29] [30] This was a form of sustainable agriculture. [31] To mitigate destructive large wildfires from ravaging the natural environment, indigenous peoples developed a practice of controlled burning. [32] This practice was recognized for its benefits by the California government in 2022. [33]
In 1999, "Ray of Light" won two Grammy Awards for Best Dance Recording and Best Short Form Music Video. It was nominated for Record of the Year , but lost to Celine Dion 's " My Heart Will Go On ". [ 77 ] [ 78 ] Furthermore, The Village Voice ranked it as the fourth best in 1998 in its Pazz & Jop critics' poll. [ 79 ]
In 1947, the cathode-ray tube amusement device, the earliest known interactive electronic game as well as the first to incorporate a cathode-ray tube screen, was created. [ 34 ] From 1949 to the early 1960s, there was a shift from circular CRTs to rectangular CRTs, although the first rectangular CRTs were made in 1938 by Telefunken.
The lengths of the periods for various n form the so-called Pisano periods. [65] Determining a general formula for the Pisano periods is an open problem, which includes as a subproblem a special instance of the problem of finding the multiplicative order of a modular integer or of an element in a finite field.