The story of Helicobacter pylori is a real testament to the tenacity of medical researchers to prove their hypothesis. It took decades before the scientific world would accept that the bacteria H. pylori caused ulcers.
This free video science lesson from Internet pedagogical superstar Salman Khan presents a general introduction to the concept of reaction mechanisms in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.
In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to handle reaction mechanisms in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.
Most really powerful rockets fire their payload in multiple stages to distribute it better. To control the release of each stage, you need staging mechanisms. This video will show you how to make a staging mechanism for a multi-stage water rocket, and references written help here.
Learn what happens during an aircraft rollout from the National Aeronautics and Space Administration, more commonly known as NASA. They spill the goods on Newton's three laws of motion and how they affect the rollout phase of landing airplanes. Learn from the master of space exploration -- NASA!
Want to make a Rubik's Cube just like Erno Rubik? Of course you do, but before you start making all of the intrinsic mechanisms of the classic Cube, maybe you should start out a little simpler.
Want to know about Newton's three laws of motion and how they affect aircraft landings? NASA has answers. NASA, aka the National Aeronautics and Space Administration, tells how Newton's laws apply to landings. There's no better place to learn from than the juggernaut of space exploration.
A common problem with human patient simulators is that they are very easy to break. In this tutorial, learn how to perform simulated open heart surgery on a HPS without breaking any of the mechanisms inside his chest. This video will demonstrate how to modifiy a human patient simulator (HPS) for open heart surgery/thoracotomy proceudres in the simulation center. Although the video demonstrates the method on a Laerdal Sim Man, the technique can be appled to other simulators.
If you've spent a ton of money on your newest smartphone, you will want to make sure it's secure. In this tutorial from the experts at PCWorld, learn exactly how to activate safety mechanisms on your Android. With these options you can set a complicated passcode (so that anyone who does find your phone won't be able to access your files) and you can also set up a locator. By using the location app, you can text your phone from anywhere else and set off a search alarm so you will be able to fi...
Want to make a Rubik's Cube just like Erno Rubik? Of course you do, but before you start making all of the intrinsic mechanisms of the classic Cube, maybe you should start out a little simpler.
This is a great spring bumping demo from UK Bump Keys. Spring bumping involves inserting a spring over a bump key to disledge the mechanisms in a lock. This is a locksmith and lockpick demonstration.
We now officially have a new use for Coke cans that has out-cooled Lady Gaga's Coke can curls from her video for "Telephone."
This video gives you tips on how to keep your dog cooler in the summer heat. Their natural body temperature in the summer is 102 degrees already. Dogs are unable to sweat. Their only mechanisms for cooling themselves naturally are their mouths and the pads of their feet.
Want to learn how to use that sewing machine? This video will teach you the basics on how to use a sewing machine. This video is part of a series and shows the basics of sewing, reversing the machine, and the basic mechanisms of the sewing machine. She will also show you what to do at the end of your fabric and proper hand placement on the machine while using the machine (no sewn fingers here!). A good step-by-step guide for first-time sewers.
After recently being in the news for collecting PII (personally identifiable information) for analytics and after-sales support, OnePlus has another security problem. An individual going by the name Elliot Alderson discovered an app in OnePlus devices that can enable root access with one command.
The pathogen referred to as a "nightmare bacteria" is quietly adapting and spreading faster than anticipated.
We can add one more health effect of our gut bacteria to the growing list. Researchers from the UK have just reported that the gut microbiota plays a role, both directly and indirectly, on the toxicity and efficacy of chemotherapy. Their findings are published online in the journal Nature Reviews Gastroenterology & Hepatology.
Before you bite into that beautiful tomato in your garden, the tomato fruitworm, or the Colorado potato beetle, might have beat you to it.
Locking your keys inside of your car is frustrating, to say the least, especially if you're in a hurry to get somewhere. You can always call AAA roadside assistance or a locksmith, but you'll probably have to fork over some money, as well as wait for them to get to you. You might even get towed.
The prevalence of smartphones has had profound effects on how we communicate, view media, and preserve memories, among other things. But all of these new forms of doing things are snatched away from us as soon as our phones lose power. While work is constantly being done to stretch and extend battery life, it hasn't moved fast enough for the vast majority of us.
Combination locks in Minecraft can be really simple or frustratingly difficult, but no matter how complicated they are, some of them fall victim to the same simple exploits.
Want to build your own life-sized, working replica of WALL-E? Be prepared to take on a second job! Mike Senna spent two years perfecting his own version, working 25 hours a week and totaling somewhere around 3,800 hours for the whole project. He had no blueprints to go by, so he spent a lot of time watching the movie over and over to get everything just right. The video below shows some of the construction; skip to about the one minute mark to see WALL-E in action.
A spare key is one of those things that never seems like a huge deal until you need it. If you've ever lost your keys, had them stolen, or locked yourself out of your house or car, you know how difficult and embarrassing it can be trying to get your door open.
Until self-driving cars become mainstream, augmented reality might be the next big technology to hit your dashboard.
Hello, fellow hackers. I'm sure we've all seen it somewhere: the undying question of "How do I hack the game so-and-so?" And the answer usually is, "Come back when you actually know how to hack!" But how does one even go about "hacking" a game? What could that even mean?
Let's say you forgot the code to your Master Lock combination padlock. What can you do besides buy another one? Well, there's a surprising abundance of ways to open a combination lock other than with just the combination, some of which will even let you reset the code. Of course, these hacks aren't limited to folks just looking to open their own locks, but let's just assume that's what you're here for.
A massive leak appeared the web today, and it's got some huge security implications for every iPhone on the market. On the plus side, it also has some potential for enabling deep-level modifications and jailbreak tweaks.
True story: a friend of mine regularly started a fight with her boyfriend everyday at 4 p.m. Every day. This went on for years until he finally got the bright idea of shoving a granola bar at her the minute she came home from work. Shazam! The fights were a thing of the past.
One of the lowest levels of hell is a room where you have to make the window blinds go all the way down. No matter if you're pulling the cord left or right, forward or backwards, the blinds will drop a foot or two, then catch on some invisible snag and refuse to go down that last little bit.
It's a common and unfortunate myth that you need to work in web or app development if you have a knack for coding and design. In fact, more and more development pros are entering the exciting and increasingly lucrative world of game design, thanks to a growing demand for strategy games that can be played on multiple platforms.
Over the past year, Magic Leap has teased its cross-platform vision of the AR cloud, which it dubs the Magicverse. While the company shared a timeline for its debut next year, it also served up new developer tools for the present.
Just like Apple and Google, Facebook has been working to develop computer vision shortcuts designed to give mobile apps augmented reality superpowers.
One of the things that sets a seasoned hacker apart from the script kiddies is the ability to effectively sneak past antivirus defenses when executing an attack. One way to do this is to use custom shellcode in an exploit. Not everyone is an expert at writing shellcode, but luckily there's an easy way to do this that is both quick and effective.
A recent study offers information that might help combat a deadly virus that affects an estimated 300,000 people each year in West Africa.
Once we recover from the respiratory infection pneumonia, our lungs are better equipped to deal with the next infection — thanks to some special cells that take up residence there.
The herpes simplex virus (HSV) can cause devastating complications for infected newborns whose mothers have genital herpes. Understanding risk and research can help you, and your baby, when the time comes.
Even though HIV rates declined 18% between 2008 and 2014, 1.1 million people in the US are living with the infection. Part of that is because HIV is treatable, but not curable.
The Deepwater Horizon oil spill that began on April 20, 2010, was the largest maritime oil spill in history. Killing 11 people and discharging 4.1 million barrels of oil and natural gas into the Gulf of Mexico, the event was an unparalleled personal, environmental, and business disaster. It was also the first major oil spill to take place in the deep ocean.
The search is on to find antibiotics that will work against superbugs — bacteria that are rapidly becoming resistant to many drugs in our antibiotic arsenal.
HIV infections persist despite treatment that successfully decreases viral blood levels to the point where doctors can't detect the virus. But that doesn't mean the person is cured. The virus hides in the body, not replicating, just waiting for a chance to jump out of the shadows and reemerge.
