Anyone know of any simple Template for scientific paper which is easy to modify and looks great? So that i don't have to use several hour to find out the syntax.
There is no single format for a "scientific paper." It really depends what you're writing. Journal and Conference papers typically have a style mandated by the publisher/organizer.
The very elegant classicthesis template by André Miede has been ported to LyX by Nick Mariette. It's available here:
For further templates like this, have a look at
and the links on those pages. You would find nice and customizable scientific LyX templates there.
LaTeXtemplates.com contains a section
The latter is LaTeX, not LyX, but a template can be a great start to change to LaTeX.