When a small child has to rely on a manual wheelchair for mobility, this piece of medical equipment must be something they feel comfortable using, but also something they like. There are so many different options of manual wheelchairs for children that most parents rely on the help of their physician, physical therapist, and other medical professionals treating their child to help them find the best. However, it is also helpful if you know a few of the most fitting features to look for so you can be an educated consumer and help find the best model for your child.

Classic techniques for observing molecules, such as the use of X-ray crystallography or NMR, often aren't effective enough to observe protein dynamics and how proteins combine to other molecules. This can slow down research into proteins and microscopic molecules that interact with them. Fortunately, hydrogen/deuterium exchange mass spectrometry (HDX) can make it possible to observe these chemical interactions.  The HDX Process The HDX exchanges hydrogen for deuterium. This is accomplished by soaking proteins in D2O.

If you've recently undergone a knee replacement, kidney transplant, or other major surgical procedure requiring home recuperation, you may be excited to finally be putting your walking aids and accessibility devices behind you for good. While this process can be great from the perspective of personal autonomy and independence, you may find yourself facing the disposal or recycling this used medical equipment purchased by you or your insurance company. What can -- and should -- you do with this used medical equipment?