Select Page

Category: Q & A

Question: What will it take to go from 3D printers to Star Trek replicators?

  John Gauch, professor of computer science and computer engineering, was happy to answer: In order to replicate objects, we must first be able to make extremely accurate 3D models of the objects we want to make. Our current MRI and CT scanners let us create images with resolutions of thousands of dots per inch. But in order to create the quality of objects they can make on Star Trek, we will need scanners with billions of dots per inch. Furthermore, we will need to know the chemical/molecular composition of each of these dots. The current generation of MRI...

Read More

Why do bridges ice in winter weather?

Kevin D. Hall, chair of the department of civil engineering, explains: We’ve all seen them – the highway signs just before a bridge saying “Bridge Ices Before Roadway.”  This phenomenon mostly boils down to insulation.  A typical highway pavement has only one face exposed to weather – the top.  The bottom of the pavement is somewhat insulated by the base and soil beneath it. Temperatures that freeze the pavement must work their way down through the structure from the top.  A bridge deck, however, is surrounded by frigid air – so that all faces exposed to the air begin to freeze at the same time. This process is accelerated for high bridges, which have greater airflow underneath.  The water that forms ice on the surface of a bridge comes typically from a couple of main sources: any precipitation that falls on the bridge and water that has soaked into the concrete slab. (Rarely are any pavements in our climate completely...

Read More

What are five things anyone can and should do to stay mentally and physically fit as they age?

Ro DiBrezzo, University Professor of kinesiology and vice provost for academic affairs, answers: 1) Move 2) Move 3) Move 4) Play 5) Move some more That may have been a bit too simple but, unfortunately, the truth. Let’s try this: The human body is designed to be dynamic, and moving is a big part of that. We learn about our environment as newborns by moving, and we express ourselves by moving, dancing and negotiating space. In some very exciting studies conducted at the University of Arkansas and other places, it has been demonstrated that there is a strong correlation...

Read More

How does interior design affect health?

Jennifer Webb, associate professor of interior design in the Fay Jones School of Architecture, answers: Have you ever thought about how much time you spend in interior environments? According to the Environmental Protection Agency, the average United States citizen spends 87 percent of his or her time indoors. Interior designers determine the sizes of indoor spaces and their arrangement, as well as the selection of all the things with which we fill spaces, such as surface materials, furnishings and accessories. These decisions directly impact human health and wellbeing, and here are several things to consider. A qualified interior designer...

Read More

What is biofuel? How does it compare with gasoline?

Here’s the answer, thanks to Jamie A. Hestekin, holder of the Jim L. Turpin Endowed Professorship in Chemical and Biochemical Engineering: Now that is an interesting question. To me, in a simplified form, a biofuel is a fuel that is made from anything that was alive not that long ago.  Of course, we need to be careful to add that closing “not that long ago.” Oil came from organic matter (probably algae) millions of years ago, but it is not considered a biofuel, because it is dealing with old carbon, not new carbon. So on to question two, is...

Read More

Looking for an expert?

The University of Arkansas Campus Experts website is a searchable database of experts who can talk to the media on current events.

Trending Topics:
Arkansas politics
Digital privacy
Sexual assault

Leading Change, Changing Lives

Connect with Us