diff --git a/research.md b/research.md
index cbe041d14f3b5b193ad37a8b61b29c09002dd18a..da2197acb6a7fa1d7a49e0a0b00a5310b4cce702 100644
--- a/research.md
+++ b/research.md
@@ -1,7 +1,7 @@
 [[!meta title="Research and tests"]]
 [[!tag research ideias ideas]]
 
-* Raw list with things to try, research, evaluate develop and maybe deploy!
+* Raw notes, lists, things to try, research, evaluate develop and maybe deploy!
 
 ## Subpages
 
diff --git a/research/devops.md b/research/devops.md
index 3e8fa5b4a5a72e3350aed84df3dc858f05b5aad3..f5efa8bb0cce0ac683fe230d25d481c373f901df 100644
--- a/research/devops.md
+++ b/research/devops.md
@@ -5,26 +5,12 @@ DevOps research:
 * [Simet](http://simet.nic.br).
 * spice-client-gtk: option to hide menubar: see `window_state_cb` at `spicy.c`.
 * auto start user screen sessions.
-* backups: snapshots with remote transfer support.
 * puppet:
   * deploy: multiple module paths: https://docs.puppet.com/puppet/3.6/dirs_modulepath.html
   * default modules as submodules from the bootstrap repository, custom modules closer to the config folder?
-* kvm:
-  * kvm-manager improvements (systemd support, packaging, docs).
-  * env params.
-  * FDE using bootless image.
 * dynamic DNS with proper zone/domain access control:
   * http://www.cheshirekow.com/wordpress/?p=457
   * https://www.erianna.com/nsupdate-dynamic-dns-updates-with-bind9
   * https://blog.philippklaus.de/2013/01/updating-dns-entries-with-nsupdate-or-alternative-implementations-your-own-ddns/
   * http://linux.yyz.us/nsupdate/
   * https://debian-administration.org/article/591/Using_the_dynamic_DNS_editor_nsupdate
-* containers:
-  * https://packages.debian.org/stretch/bubblewrap
-  * https://packages.debian.org/stretch/runc
-  * https://github.com/projectatomic/bubblewrap
-  * https://github.com/opencontainers/runc
-  * https://github.com/thestinger/playpen
-  * https://github.com/omegaup/minijail
-* misc:
-  * [leap-cli](https://leap.se) ([package](https://packages.debian.org/sid/leap-cli)).
diff --git a/research/hardened.md b/research/hardened.md
index e1974f9ae229fcf08abafb2894cb2de056db2732..f59a43ed7c87341725de0cc446b14086093475ab 100644
--- a/research/hardened.md
+++ b/research/hardened.md
@@ -36,3 +36,9 @@ References
 * https://micahflee.com/2016/01/debian-grsecurity/
 * https://nixaid.com/grsec-in-docker/
 * https://hardenedlinux.github.io/
+* https://packages.debian.org/stretch/bubblewrap
+* https://packages.debian.org/stretch/runc
+* https://github.com/projectatomic/bubblewrap
+* https://github.com/opencontainers/runc
+* https://github.com/thestinger/playpen
+* https://github.com/omegaup/minijail
diff --git a/research/hardware.md b/research/hardware.md
deleted file mode 100644
index 653ffeb6f0e0341cc213cc0af73777f2f6009ed0..0000000000000000000000000000000000000000
--- a/research/hardware.md
+++ /dev/null
@@ -1,7 +0,0 @@
-[[!meta title="Hardware projects"]]
-[[!tag research pesquisa hardware]]
-
-Electronics
------------
-
-* trench radio (foxhole radio) and crystal radio.
diff --git a/research/radio.md b/research/radio.md
index f72aea3833cde3801e663a13a3f2787acb632bfb..b1d3e080703d3cc9b1eaef6abc6394cefe472c4a 100644
--- a/research/radio.md
+++ b/research/radio.md
@@ -1,6 +1,7 @@
 [[!meta title="A Era do Rádio Chegou"]]
 [[!tag radio rádio hardware comunicação]]
 
+* Build a trench radio (foxhole radio) and crystal radio.
 * [Transmitting FM, AM, SSB, SSTV and FSQ with just a Raspberry Pi](http://www.rtl-sdr.com/transmitting-fm-am-ssb-sstv-and-fsq-with-just-a-raspberry-pi/).
 * [Raspberry PiRate Radio FM Transmitter](http://www.rtl-sdr.com/raspberry-pirate-radio-fm-transmitter/).
 * [Transmitting Data with a Raspberry Pi and RTL-SDR](http://www.rtl-sdr.com/transmitting-data-raspberry-pi-rtl-sdr/).