Wearable Pulse Oximeter Can Detect and Warn of Impending Opioid Overdose

Students at Carnegie Mellon University (CMU) have created a wrist oximeter that monitors blood oxygen levels and can warn the wearer and others of an impending opioid overdose. Opioids such as heroin depress the central nervous system, including respiration, and an overdose kills by suppressing respiration to the point that a person’s heart and brain dies from insufficient oxygen. The CMU wrist oximeter continuously monitors oxygen levels and when low blood oxygen is detected, it will warn the wearer and can also send a text message to an emergency contact.

The Harm Reduction Coalition has a set of web pages explaining the principles behind an overdose and how the drug Naloxone (Narcan®) works to quickly reverse the effects of an opioid overdose and prevent death by restoring the central nervous system to normal operation and thereby restoring normal respiration.

For those interested in a more in depth exploration of the effect of heroin on mammals (rats are used in this experiment), I found the study Intravenous Heroin Induces Rapid Brain Hypoxia and Hyperglycemia that Precede Brain Metabolic Response helpful.

It’s worth noting that Naloxone is relatively easy to administer (with training available) and can be purchased without a prescription. This Time article has details on the legality and availability of Naloxone. If you’re around someone who uses opioids, having Naloxone available could save their life.

How to Fix Thin Scrollbars in Gnome 3

If your scrollbars are too thin in Gnome 3, this is worth a try.

1  Open a terminal.
2  Go to ~/.config/gtk-3.0/
3  Open the gtk.css file for editing. Create this file if it doesn’t exist.
4  Add the following text to the gtk.css file:

.scrollbar.vertical slider,
scrollbar.vertical slider {
min-width: 15px;
}

5  Save the  gtk.css file and log out and back in to Gnome.
6  When you log back in, you should see the scrollbars on apps like the Firefox browser and terminals changed to the value you entered in the gtk.css file.

You may have to tinker with the min-width to get the scrollbar thickness you want but hopefully this resolves your problem. Thanks to the folks on this ubuntuforums thread for the answer.

My environment is CentOS 7 and Gnome Shell 3.25.4, but this problem seems to be more generally related to Gnome 3.

If you want to know your Gnome Shell version, the easiest way to find it is to open a terminal and type gnome-shell –version.

If this doesn’t resolve your issue, I’d like to hear about your situation. I understand if registering to comment is too much work though … 🙂

 

How to Fix Firefox Scrolling in Gnome 3

If you’re having slow and jerky scrolling in Firefox with Gnome 3, this is worth a try, especially if your Chrome scrolling is fine.

1  Open firefox.
2  Type about:config in the Firefox address bar and hit Enter.
3  Type mousewheel.min_line_scroll_amount into the search bar.
4  Double click the row that shows up, enter a higher number (I use 30) and press Enter.

You may have to tinker with the mousewheel.min_line_scroll_amount to get the behavior you want but hopefully this resolves your problem. Thanks to the folks on this reddit thread for the answer.

My environment is CentOS 7 and Firefox 60, but this problem seems to be generally related to recent (e.g. ~2018) Firefox on recent Gnome.

Trump Supporters Have Low Self-esteem and Want Revenge and Spectacle

Redditor jwords wrote a very insightful comment on this post about a recent Trump atrocity. In it, he provides a concise and reasonable explanation for why Trump won and what motivates his supporters.

 

You can go to Reddit to see the comment/question jwords is responding to, but I’ll paste it in here to make this an easier read.

KidKilobyte: “Just saw this on his twitter feed and got a pit in my stomach. How can his base tolerate such bad timing and bad taste in what he posts? Other than fringe lunatics, what do educated Trump supporters say about his constant stream of garbage. Why does goosing the economy trump (pun intended) good taste and excuse such an unrelenting stream of garbage from his mouth? And as to the “great” economy, seems the deficit is ballooning and this train is headed for a bridge that is out.”

Five Year Old Detained at US Border and Tricked into Signing Away Her Rights

The Five-Year-Old Who Was Detained at the Border and Persuaded to Sign Away Her Rights

From the New Yorker story:

“One of the things Helen’s story really showed us is that the Trump Administration never stopped separating children from their families,” Morales Rocketto said. “In fact, they’ve doubled down, but it’s even more insidious now, because they are doing it in the cover of night.”

This is what Republicans have created, a nation that willfully destroys the lives of families with young children. The GOP stands profoundly against life.