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documentclass[bigchapter,type=msc,colorback,oneside,accentcolor=tud1c,longdoc,book]{tudthesis}
\usepackage{ngerman}
\usepackage[ngerman]{hyperref}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{titling}\setlength{\droptitle}{-2cm}
\usepackage{color,siunitx}
%\usepackage[section]{placeins}

\usepackage{longtable}
\usepackage{multirow}
\usepackage{booktabs}
\usepackage{amsmath}
\usepackage{array}
\usepackage{lmodern}
\usepackage{listings} 
\usepackage{fancyhdr}
\usepackage{acronym}
\usepackage{diagbox}
\usepackage[backend=bibtex, style=numeric-comp,sorting=none]{biblatex}
\usepackage{subfig}
\usepackage[subfigure]{tocloft}
\usepackage{url}
\usepackage{pgfplots}
\usepackage{adjustbox}
\usepackage{gensymb}
%\usetikzlibrary{shapes.misc}
\usepackage{xcolor}
\usepackage{tabularx}
\pagestyle{fancy}
\usepackage{nomencl}
\usepackage{titlesec}
\usepackage{nomencl}\makenomenclature
\usepackage[ngerman]{hyperref}

\newcommand{\getmydate}{%
  \ifcase\month%
    \or Januar\or Februar\or M\"arz%
    \or April\or Mai\or Juni\or Juli%
    \or August\or September\or Oktober%
    \or November\or Dezember%
  \fi\ \number\year%
}
\def\theequation{\thesection.\arabic{equation}}
\setinstitutionlogo{Kapitel/logo.png}
\setcounter{secnumdepth}{4}
\addbibresource{Arbeit2.bib}



% % % % % % % % %% Nomgroup setting: Starting% % % % % % % % %
%\renewcommand*{\nompreamble}{\markboth{\nomname}{\nomname}}
\renewcommand{\nomname}{}
\newcommand*{\chUnit}[1]{\hfill\makebox[1.7cm]{#1\hfill}}
\newcommand*{\DescrWidth}[1]{\parbox[c]{7cm}{#1}}
\newcommand*{\chSubtitle}[1]{\item[\large\bfseries#1]}

\newcommand*{\chnomSeq}[1]{\csname chSymb#1\endcsname}
\renewcommand*{\nomgroup}{\chnomSeq}
\newcommand*{\chSymbR}{\vspace{5mm}\chSubtitle{}%
  \item[\textbf{Symbol}]%
  \textbf{Beschreibung}\chUnit{\textbf{Einheit}}}

   
\newcommand*{\chwithUnit}[4]{\nomenclature[#1]{#2}%
{\DescrWidth{#3}\chUnit{#4}}}

\newcommand*{\nmG}[4][]{\chwithUnit{G#1}{#2}{#3}{#4}}
\newcommand*{\nmR}[4][]{\chwithUnit{R#1}{#2}{#3}{#4}}
% % % % % % % % % % Nomgroup setting: Ending % % % % % % %
\newcommand{\dd}[2]{\frac{\mathrm{d}#1}{\mathrm{d}#2}}
\newcommand{\ddd}[2]{\dfrac{\mathrm{d}#1}{\mathrm{d}#2}}
 

\begin{document}
text
\end{document}