Re: How to write a good report conforming to the style of a scientific paper?

Use multisyllabic words and obscure language (kidding).  The best thing to 
do
is to look at a
few scientific papers.  All papers are written in the third person using a
"professional"
detached voice.  Most journals ask that specific sections are included eg.,
abstract, methods,
discussion.  The journals themselves have word-length standards for each of
these sections.
Nature for instance has a different word length and set-up for "Letters to
Nature" as opposed
to full-length articles.  Most journals have a submissions guideline near 
the
beginning or end
of the issue -- that would be your best bet.  As a personal aside, I would
suggest clear
concise language, call a spade a spade, and use short sentences!