\begin
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\documentclass[8pt]{beamer}
\usepackage{graphicx} % Allows to include images
\usepackage{booktabs} % Allows the use of \toprule, \midrule and \bottomrule in tables
\mode<presentation> {
\usetheme{default}
\usecolortheme[named=black]{structure} % White titles and such
\setbeamercolor{normal text}{fg=black} % White text
\setbeamercolor{background canvas}{bg=white} % Black background
\setbeamertemplate{itemize item}{\color{black}$\bullet$} % Comment this line for default bullet points (triangles)
\usepackage{helvet} % Helvetica Font
\renewcommand{\familydefault}{\sfdefault}
\setbeamertemplate{navigation symbols}{} % No navigation symbols
\setbeamertemplate{footline} % Only page number at the bottom
{\begin{minipage}{5mm} \vspace{-10 mm} \hfill \insertframenumber \end{minipage}}
}
\makeatletter
\newcommand{\mathleft}{\@fleqntrue\@mathmargin0pt}
\newcommand{\mathcenter}{\@fleqnfalse}
\makeatother
%----------------------------------------------------------------------------------------
% TITLE PAGE
%----------------------------------------------------------------------------------------
\vspace*{23ex}
%\title[Short title]{\textcolor{white}{\textbf{You can write your even longer title HERE}}}
\title{\textcolor{white}{\textbf{You can write your title HERE }}}
%\subtitle{
%(or subtitle here)
%}
\author{\small {\underline{Author First}$^{1}$,
Author Second $^2$,
Author Next $^3$ \& So On$^4$} \vspace{2ex} \newline
\tiny \textit{$^1$Affiliation,
$^2$Affiliation,
$^3$Affiliation,
$^4$Affiliation}}
%\author{Name and Surname, INS - Institute of North Siberia)}% Your name
\date{Event, Date, Place} % Date, leave empty, use subtitle instead
\begin{document}
\setbeamertemplate{background}{\includegraphics[width=\paperwidth, trim = 0 0 0 0]{title_template.pdf}} % Adding the background logo for the title page
\begin{frame}[plain]
%\vspace*{1.55cm} % Use this spacing if author field is empty
%\vspace*{60mm} % Use this spacing if author field is used
\titlepage % Print the title page as the first slide
\end{frame}
\setbeamertemplate{background}{\includegraphics[width=\paperwidth]{template_presentation.pdf}} % Adding the backgroundlogo for the rest of the slides
\setbeamertemplate{frametitle}{
\nointerlineskip%
\begin{beamercolorbox}[wd=\paperwidth,ht=5.0ex,dp=1.6ex]{frametitle}
\hspace*{1ex}\insertframetitle%
\end{beamercolorbox}
}
%----------------------------------------------------------------------------------------
% PRESENTATION SLIDES
%------------------------------------------------
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\frametitle{\textcolor{white}{Some slide with enumerates (items) } }
\begin{enumerate}
\item \textbf{Enumerated list 1}
\vspace*{2ex}
\begin{itemize}
\item item 1
\item item 2
\item item 3
\end{itemize}
\vspace*{2ex}
\item \textbf{Enumerated list 2}
\begin{itemize}
\vspace*{2ex}
\item item 1
\item item 2
\item item 3
\end{itemize}
\end{enumerate}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\frametitle{\textcolor{white}{Some slide with figures} }
\begin{figure}[H]
\centering
\includegraphics[width=0.45\textwidth]{sctr_U_43h211_ctrl.png}
\includegraphics[width=0.45\textwidth]{sctr_U_43h211_rsl.png.png}
\caption{Comment this line if you want to exclude the figure caption}
\end{figure}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 4 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\frametitle{\textcolor{white}{Some slide with equation} }
\begin{equation*}
\frac{\partial \overline{\theta}_v}{\partial t} = - \overline{U}\frac{\partial \overline{\theta}_v}{\partial x} - \frac{\partial H}{\partial z} - \frac{\partial LE}{\partial z} + S(z,t),
\end{equation*}
\end{frame}
\end{document}