Fonts & Character Sets ⇒ Uppercase in the subsection without to change the lowercase in the sumary

[jaco_julio]

I want to put the subsection and the subsubsection in the text on uppercase, but I don't want to change the lowercase in the sumary.
My code is this:

Code: Select all

Code, edit and compile here:

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\documentclass[a4paper, 12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[lmargin = 2.5cm, rmargin = 2.5cm, tmargin = 2.5cm, bmargin = 3cm]{geometry}
\usepackage[english,brazil]{babel}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage{indentfirst}
\usepackage{subfiles}
\usepackage{blindtext}
\usepackage{color}
\usepackage{lipsum}
\usepackage{setspace}
\usepackage{chngcntr}
\usepackage{etoolbox}
\usepackage{titlesec}
\usepackage{float}
\usepackage{tikz}
\usepackage{fancyhdr}
\usepackage{nomencl}
\usepackage{titletoc}
\usepackage[toc,page]{appendix}
%\usepackage{fontspec}
%\setmainfont{Times New Roman}
%\usepackage{hyphenat} \hyp{}
%\usepackage{sectsty}
%0205218599
%\lineskip
%\setlength\afterchapskip{18pt} %capítulo começa nas páginas ímpares
\setlength{\parindent}{0.75cm}
\setstretch{1.5}
%\onehalfspacing %espaçamento entre linas
\newcommand{\signaturerule}{\rule{30em}{.4pt}}
%\renewcommand{\arraystretch}{0.5}
\renewcommand{\baselinestretch}{1.5}
\setlength{\parskip}{0pt}
\setlength{\nomitemsep}{-\parsep}
 
\makenomenclature
\usetikzlibrary{shapes,arrows}
 
 
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Run LaTeX here

Is there someone can help me, please?

[Johannes_B]

Wouldn't \subsection[Capybara]{CAPYBARA} be the most simple thing to do?

Crosspost on TeX.SX.