\documentclass[portuguese,msc,fctuc]{uc-thesis}
\import{}{acronyms.tex}
\renewcommand\nomgroup[1]{%
% \itemsep10pt % Adjust the value as desired for the spacing between items
\vspace{\baselineskip} % Adjust the value as desired for the spacing before a group
\item[\large\bfseries
\ifstrequal{#1}{Z}{Acrónimos}{% % não é necessário devido ao pacote de acrónimos
\ifstrequal{#1}{A}{}{%
\ifstrequal{#1}{G}{Símbolos Gregos}{%
\ifstrequal{#1}{S}{Sobrescritos}{%
\ifstrequal{#1}{U}{Subscritos}{%
\ifstrequal{#1}{X}{Outros Símbolos}{}}}}}}]%
}
% Reducing spacing before the first group in the nomenclature to adjust for the spacing in the others
\renewcommand{\nompreamble}{\vspace{-10pt}} % Adjust the value as desired for the spacing
\makenomenclature
\begin{document}
%% Use Roman numerals for the page numbers of the title pages and table of contents.
\frontmatter
\renewcommand{\chaptermark}[1]{\markboth{\thechapter.\ #1}{}}
\import{}{thesis_info.tex}
%\import{}{nomenclature.tex}
\makecover
\maketitlepage
\makededication
\makeacknowledgement
\makeabstract
\tableofcontents
\cleardoublepage
\listoffigures
\cleardoublepage
\listoftables
%\cleardoublepage
\listofacronyms
\import{}{nomenclature}
\printnomenclature
\mainmatter
\renewcommand{\chaptermark}[1]{\markboth{\thechapter.\ #1}{}}
%% Add chapters to be imported
%\fontsize{12}{12}\selectfont
\import{chapters/}{chapter-1_Intro.tex}
\import{chapters/}{chapter-2_Fundamentos.tex}
\import{chapters/}{chapter-5_Conclusoes.tex}
\bibliography{thesis.bib}
\appendix
%% Add appendixes to be imported
\import{chapters/}{appendixA.tex}
%\annex
%% Add annexes to be imported
%\import{chapters/}{annexA.tex}
\end{document}
