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symbol for element neptuniumneptunium
, radioactive chemical element; symbol Np; at. no. 93; mass number of most stable isotope 237; m.p. about 640°C;; b.p. 3,902°C; (estimated); sp. gr. 20.25 at 20°C;; valence +3, +4, +5, or +6. Neptunium is a ductile, silvery radioactive metal.
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(computer science)
The class of decision problems for which solutions can be checked in polynomial time.




The country code for Nepal.


(Number Portability) The capability of keeping the same telephone number when switching carriers or services. It all started with 800 numbers, which led to local number portability (LNP) and later to wireless number portability (WLNP). November 24, 2003 was known as "Cellphone Independence" day because it was the first time in the U.S. that customers in the top 100 metropolitan service areas (MSAs) could move their telephone numbers to a different carrier. In most cases, landline numbers can also be moved to a cellular carrier.
References in periodicals archive ?
In addition to Argentina, number portability solutions from iconectiv and its subsidiaries have been implemented in 18 countries worldwide, including the US, Canada, Mexico, Chile, Peru, Brazil, India, Thailand, Malaysia, Pakistan, Greece, Egypt, Turkey, Saudi Arabia, UAE, Nigeria, Tunisia and South Africa.
The BFX Interface Gateway provides such a single, unified access point for number portability in the network, allowing service providers to streamline look-up access to number and address registries.
Also, consumers are advised to be aware of their bill issuing date (or Billing Cycle) with their current service provider, to submit the number portability request at least two days prior to the end of this period, in order to avoid double billing from both operators.
Number portability is always in the consumers' interest, and in every country the challenge is whether the government and competitors can overcome the incumbent's willingness to cooperate.
Vodafone Qatar chief executive officer Richard Daly said, "'Vodafone welcomes and fully supports the introduction of Mobile Number Portability in Qatar.
According to reports, every operator except Videocon has managed to expand their bases after the launch of the number portability system.
Ahmed Jaber Aldoseri, ICT director and number portability project manager of Bahrain TRA, said: "Number portability, whether fixed or mobile, is firmly considered by TRA as a consumer right.
It will increase the level of competition, with operators more likely to match each other's offers, but in this region most people have more than one SIM card so not many would permanently switch operator if number portability was introduced.
The statement comes in response to calls by the regulatory body that the three mobile operators in the country draw up an action plan on how to fix any problems with the number portability procedure by December 1, 2010.
The impact of such a mandate will be more dramatic than wireless number portability," says Ron Cowles, research vice president for Gartner.
A local number portability report by the Yankee Group found that number portability in the U.
Responding to the Department of Telecom (DoT) on added entry fee, PBG and FBG that will be imposed on the existing Mobile Number Portability licensees for expanding range of their licenses, the TRAI has made these suggestions.