main.tex

\documentclass[review]{elsarticle}

\usepackage{multirow}
\usepackage{lineno}
\usepackage{xspace}
\usepackage{threeparttable}
\usepackage{subfig}
\modulolinenumbers[5]

%% Journal name here
\journal{FIXME: The Journal Name Goes Here}

%% `Elsevier LaTeX' style
\bibliographystyle{elsarticle-num}
%%%%%%%%%%%%%%%%%%%%%%%

%%%% packages and definitions (optional)
\usepackage{placeins}
\usepackage{booktabs} % nice rules (thick lines) for tables
\usepackage{microtype} % improves typography for PDF
\usepackage{hhline}
\usepackage{amsmath}
\usepackage{subfig}

\usepackage{booktabs}
\usepackage{threeparttable, tablefootnote}

\usepackage{tabularx}

%% Special typesetting for Cyclus
\newcommand{\Cyclus}{\textsc{Cyclus}\xspace}%
\newcommand{\Cycamore}{\textsc{Cycamore}\xspace}%
\graphicspath{{images/}}

% tikz %
\usepackage{tikz}
\usetikzlibrary{positioning, arrows, decorations, shapes}

\usetikzlibrary{shapes.geometric,arrows}
\tikzstyle{process} = [rectangle, rounded corners, minimum width=3cm, minimum height=1cm,text centered, draw=black, fill=blue!30]
\tikzstyle{object} = [ellipse, rounded corners, minimum width=3cm, minimum height=1cm,text centered, draw=black, fill=green!30]
\tikzstyle{arrow} = [thick,->,>=stealth]

% hyperref %
\usepackage[hidelinks]{hyperref}
% after hyperref %
\usepackage{cleveref}
\usepackage{datatool}
\usepackage[acronym,toc]{glossaries}
\include{acros}

\makeglossaries

\begin{document}
\begin{frontmatter}
\title{FIXME: The Title Goes Here}

%\date{}                     % uncomment if you don't need date to appear

% Authors
\input{authors}

% Institutes of the authors
\input{institutions}

\begin{keyword}
FIXME \sep
key words \sep
go here \sep
like: \sep 
simulation \sep
spent nuclear fuel 
\end{keyword}

\input{abstract}
\end{frontmatter}
\glsresetall

%% Shows line numbers
\linenumbers

\input{introduction}
\input{methods}
\input{results}
\input{conclusion}
\input{acks}

\bibliography{bibliography}

% Prof. Huff discourages appendices in journal articles.
% But, if you must, include one like so:
%\pagebreak
%\input{appendix}

\end{document}