Category Archives: Students

Items for students and others, interested in learning about science and engineering and the application of science in our lives. We post many of the general interest items here.

Energy Efficiency of Digestion

Why is Fecal Matter Brown?

The complex digestion process ensures that almost no useful energy goes unused. The average bowel movement is three parts water to one part solid matter. Bacteria make up 30 percent of the solid stuff. The same goes for indigestible foods like cellulose and extra fiber. The remaining 40 percent contains various inorganic wastes, fats and used-up body substances like red blood cells

Scientists Examine 100 Trillion Microbes in Human Feces:

Aiding the large intestine in this task are trillions of microbes that reside in the gut, where they help digest foods we would otherwise have to avoid. In this way the bugs contribute to our overall health.

Some of these tiny settlers are with us from birth, imparted from our mothers, while others gradually colonize our bodies as we grow. This microbial community is as diverse as any found in Earth’s seas or soils, numbering up to 100 trillion individuals and representing more than 1,000 different species.

Virus may be eating your brain

Forgetful? Virus may be eating your brain

Viruses that cause a range of ills from the common cold to polio may be able to infect the brain and cause steady damage, a team at the Mayo Clinic in Minnesota reports.

“Our study suggests that virus-induced memory loss could accumulate over the lifetime of an individual and eventually lead to clinical cognitive memory deficits,” says Dr Charles Howe, who reports the findings in the latest issue of the journal Neurobiology of Disease.

The viruses are called picornaviruses and infect more than 1 billion people worldwide each year.

They include the virus that causes polio, as well as colds and diarrhoea. People contract an average of two or three such infections a year.

Related: Viruses as Nanomachines (webcast) (excellent, John) – What Are Viruses? – More info on Picornaviruses from Tulane – Microbes

SMART Fellowships

The Science, Mathematics, And Research for Transformation Defense Scholarship for Service Program (SMART) is administrated by ASEE. As I have stated before – while I work for ASEE this blog is my own and is not associated with ASEE.

Program highlights include:

Starting salary/stipend ranging from $22,500 for undergraduates to $38,000 for doctoral students
Full tuition and related education fees and a book allowance of $1,000
Paid summer internships
Career opportunities after graduation

Read more about the program and apply online – the deadline is 5 February 2007. Article on the SMART program from ASEE’s magazine: PRISM.

The deadline from the NSF Graduate Research Fellowship is as early as tomorrow for some applications and as late as November 13th for others.

Bacteria in Food Increasingly Dangerous

Food-borne bacteria evolving, becoming more dangerous by Elizabeth Weise:

The evolution of ultra-dangerous versions of common food pathogens with which humans have coexisted for millennia. E. coli lives in the guts of most mammals. Almost all forms are harmless; some are actually necessary for health. It wasn’t until the 1970s that a deadly version — O157:H7 — emerged that causes kidney damage and death.

Two forms of the salmonella bacteria,Salmonella typhimurium and Salmonella newport, have evolved to resist most of the antibiotics that doctors are comfortable giving to children, says Patricia Griffin, who studies food-borne and diarrheal illnesses at the CDC.

Both are most common in cattle and other farm animals but are also turning up in fresh produce.

MRSA Vaccine Shows Promise

Superbug vaccine ‘shows promise’

A vaccine to guard against hospital superbug MRSA is a step closer, according to scientists. US researchers have developed a vaccine that protected mice from four potentially deadly strains of MRSA.
…
The team looked for a vaccine using a technique called “reverse vaccinology”, which builds on recent genetics advances.

It involved sifting through the genome of Staphylococcus aureus to hunt for proteins on the microbe that might spark the body’s immune system into action, producing protection against the bacteria.

The team identified four proteins that prompted a strong immune response, making them good targets for vaccines.

More information on MRSA is available from the United States Center for Disease Control and Prevention.

Satellite Tracker from NASA

Cool satelite tracker from NASA that uses Java (if you don’t have Java you can see some other links they provide but they really are not that great). You can use your mouse to spin the globe around and see satellites. You can also select specific satellites and see their orbits. A nice fun quick visit.

Educating Scientists and Engineers

Business Week has an articles discussing what business would like to see from graduates, Biotech’s Beef:

The problem is a disconnect between what universities are teaching and what biotech wants. “The focus of academia is getting basic and theoretical knowledge in place,”
…
There are several weaknesses. First, recent grads lack the technical knowledge to carry out applied research in areas that straddle engineering, math, and computers. Second, job candidates have little awareness of what the Food & Drug Administration is looking for when it considers whether or not to approve a drug. Recent grads simply aren’t familiar with issues such as quality control and regulatory affairs.

This general idea is not new. But, as always (and probably more so if the nature of what is needed is changing faster today than in the past) the changing environment does require universities (and students, at least those that want to work in industry) to adapt.

But with H-1B quotas filling up earlier every year, Invitrogen has chosen to do more drug development in Japan, China, and India. It may also open facilities in Korea and Singapore, says Rodney Moses, Invitrogen’s vice-president of talent acquisition. Compensation in China and India is lower than in the U.S., but that’s not what motivates the move offshore, says Moses. “If the talent is located in Singapore, it’s just easier for us to go there.”

U.S. colleges take the problem seriously. State university systems in California, Wisconsin, and elsewhere are adding more industry-oriented classes.

60 Acre (24 hectare) Spider Web

Two interesting articles Millions of Tiny Spiders Spin Mystery in a British Columbia Clover Field, and Spiders weave huge natural wonder in B.C. cover a story from 2002:

A biology professor in northern British Columbia has spotted a clover field crawling with spiders.

Brian Thair of the College of New Caledonia in Prince George said he saw a silky, white web stretching 60 acres across a field.

Related: Another remarkable natural event, giant wasp nest. Also see a post on spider thread.

Residence Halls for Engineering Students

Three residence halls allocated just for engineering students at Southern Illinois University by Alexis Boudreau

The National Science Foundation in September granted SIUC $1.2 million to help fund the endeavor. Chrisman said more than half of the grant would go toward funding the peer mentors’ salaries.
…
Nicklow said there would be approximately five students per mentor, and the mentor would attend at least one class per week with the students, along with providing tutoring and guidance.
…
“The whole purpose is for them to interact with one another,” Lorentz said. “They will be able to live, learn and study together. It will enhance the student experience.”
…
The new program will also involve faculty mentors, free tutoring available in the halls four or five nights a week and 36 practicing engineers who will periodically speak to students.

Some of the ideas sound good. I am skeptical of the advantage for completely separate dorms, but I believe in experiments so I like the idea of trying this. It will be interesting to see the results of this effort.

High Pay for Engineering Graduates

Undergraduate engineering degrees top the list of best paid: Most lucrative degrees for college grads. This article offers a slight update to Lucrative college degree post from July.