It means Dengue...
You have dengue disease. See a doctor.
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A namespace is a group of related identifiers.namespace ns {int i;double d;}Inside namespace ns, i and d can be used normally. Outside namespace ns, i is called ns::i and d is called ns::d. To import i into the current scope, say "using ns::i;". To import all identifiers in ns into the current scope, say "using namespace ns;". Namespaces can be nested:namespace ns1 {namespace ns2 {int i;}int i;}The i in namespace ns1 is fully qualified as ns1::i. The i in namespace ns2 is fully qualified as ns1::ns2::i. The two variables are distinct. Inside ns2, i refers to ns1::ns2::i; inside ns1, i refers to ns1::i.
ns1 or ns2
ns1, where n is the number of the period in which the element is present
The valance electron configuration is the same in each at ns1 where n = the period number.
Properties of Hydrogen. Hydrogen is a nonmetal and is placed above group in the Periodic Table because it has ns1 electron configuration like the alkali metals.
The outer shell contains 1 electron, ns1 Li [He] 2s1 K [Ar]4s1
The valance electron configuration is the same in each at ns1 where n = the period number.
You can do a Whois lookup on their domain name and generally find the name of the hosting computer. It's the one that reads ns1.somewebhostnamehere.blah. Sometimes you'll have to take that, without the ns1 part and plug it into a search engine to find out what that company name is. If they have a privacy protected domain name, you may not be able to locate any information about where they are hosted.
BOTH Li and Na have ns1 in common which comes at last of their electronic configuration as they belong to IA subgroup.
They are both very reactive because of their low number of valence electrons, they both react with water (with the exception of beryllium oxide), and they form positive ions. They are all metals.