Better Way To Desalinate Water

NJIT Professor Discovers Better Way To Desalinate Water – NJIT broke the link to their press release so I removed it 🙁 A university breaking news release web link, sigh. At least far fewer web sites are run by pointy haired bosses that don’t understand extremely basic rules like web pages must live forever.

Chemical engineer Kamalesh Sirkar, PhD, a distinguished professor at New Jersey Institute of Technology (NJIT) and an expert in membrane separation technology, is leading a team of researchers to develop a breakthrough method to desalinate water. Sirkar, who holds more than 20 patents in the field of membrane separation, said that using his technology, engineers will be able to recover water from brines with the highest salt concentrations.

Leonardo da Vinci

Leonardo da Vinci drawings including a larger version of the image above.

Math and the Mona Lisa : The Art and Science of Leonardo da Vinci is an excellent book exploring the visionary science of Leonardo da Vinci. More excellent science books that we recommend.

An excellent site for learning more about Leonardo – Museum of Science Leonardo web site (includes classroom activities):

Leonardo da Vinci may seem an unusual topic to study in science. But the more you learn about this remarkable Renaissance man, the more you will realize that he was a terrific role model for applying the scientific method creatively in every aspect of life including art and music. Although he is best known for his dramatic and expressive artwork, Leonardo also conducted dozens of carefully thought out experiments and created futuristic inventions in a time before modern science and invention had really begun.

Leonardo: Master Draftsman exhibit at the Met

$1 Billion for Indian Research University

Anil Agarwal donates $1 billion to set up university

Anil Agarwal, chairman, Vedanta Resources Plc, is keen to establish a world class, multi-disciplinary university in India, with a vision to developing India’s education and research infrastructure.

To be established with an endowment of up to $1 billion, Vedanta University will be of the calibre of institutes like Harvard, Stanford and Oxford, a Vedanta media statement said on Thursday.

Based on a ‘not-for-profit’ philosophy, the university will strive to impart world-class education and drive a cutting-edge research agenda, with an envisaged student population of more than 100,000 in the long term.
…
Stanford University’s Research Park has spawned more than 1,200 companies in the Silicon valley, with a combined market capitalisation of more than $300 billion: the vision of Vedanta University is to aspire to be a similar enabler for India, said the Vedanta statement.

It will be interesting to see how much money is actually donated and how effective this effort is.

How Things Work

How Things Work from the University of Virgina explains the scientific reason behind what we experience everyday:

What happens when sheets of paper, long rolled up into a tube, are unrolled but simply won’t ever lie flat again?

Paper consists mostly of cellulose, a natural polymer (i.e. plastic) built by stringing together thousands of individual sugar molecules into vast chains. Like the sugars from which it’s constructed, cellulose’s molecular pieces cling tightly to one another at room temperature and make it rather stiff and brittle. Moreover, cellulose’s chains are so entangled with one another that it couldn’t pull apart even if its molecular pieces didn’t cling so tightly. These effects are why it’s so hard to reshape cellulose and why wood or paper don’t melt; they burn or decompose instead. In contrast, chicle — the polymer in chewing gum — can be reshaped easily at room temperature.

Engineering is Elementary

Elementary Engineers: Engineering concepts should be taught at an early age by Polly Roberts, Richmond.com:

Christine M. Cunningham, vice president of research at the Museum of Science, Boston spoke to more than 200 Virginia elementary school teachers last week at the 10th Annual Children’s Engineering Convention in Glen Allen.

The EiE program then provides teachers with lesson plans, handouts and background information so they can discuss the engineering aspects of the book with their students and have them participate in their own “engineering design challenge,” which in this case would be developing a water purifier.

Cunningham said the program helps build and reinforce skills such as problem solving, data analysis, teamwork, creativity and more. Plus, starting the lesson with a book incorporates literacy.

Engineering is Elementary (EiE): Engineering and Technology Lessons For Children

This is another nice resource for teachers including lesson plans such as: Catching the Wind – Designing Windmills. For more resources see our: Science and Engineering Link Directory

New Fulbright Science Awards

The State Department plans to award 25 extended Fulbright scholarships to foreign graduate students in science and engineering, who will be chosen by “a blue-ribbon panel of experts in a global competition rather than through the traditional bilateral agreements,” writes Science Now.

I would imagine they will eventually put up some information about this program on the State Department Fulbright website. The list of the regular 2005-6 awardees shows their fields of study.

April’s Science Education Blog

April’s Science Education Blog includes several interesting posts on student centered learning, including, agents of change at rush henrietta:

Within 10 minutes of walking in the front door, both a student and a colleague of Ashley’s raved about what a difference she has made in her first few months. The student enthusiastically escourted me to Ashley’s classroom sharing stories of how Ashley is someone she and others can really relate to. A couple of Ashley’s colleagues told me of how her innovative work with foam-based magnatized shapes (manipulatives) at stations empowered them to try this new student-centered approach.

10 Things That Will Change The Way We Live

Forbes offers a list of 10 Things That Will Change The Way We Live. Of the items 9 of 10 seem directly related to science and engineering, such as: Fuel Cells, Gene Therapy, WiMAX. The only one that doesn’t seem directly related to science and engineering is $200 a barrel oil. But even there the effect of such an future would largely depend on science and engineering solutions that would be created in such a future.

Science and Engineering Indicators – Workforce

The National Science Board has release the comprehensive Science and Engineering Indicators 2006. The report contains a great deal of interesting information. Some highlights

The science and engineering workforce in the United States has grown rapidly, both over the last half century and the last decade.

From 1950 to 2000, employment in S&E occupations grew from fewer than 200,000 to more than 4 million workers, an average annual growth rate of 6.4%.
Between the 1990 and 2000 censuses, S&E occupations continued to grow at an average annual rate of 3.6%, more than triple the rate of growth of other occupations.
Between 1980 and 2000, the total number of S&E degrees earned grew at an average annual rate of 1.5%, which was faster than labor force growth, but less than the 4.2% growth of S&E occupations. S&E bachelor’s degrees grew at a 1.4% average annual rate, and S&E doctorates at 1.9%.
Approximately 12.9 million workers say they need at least a bachelor’s degree level of knowledge in S&E fields in their jobs. However, only 4.9 million were in occupations formally defined as S&E.
Twelve million workers have an S&E degree as their highest degree and 15.7 million have at least one degree in an S&E field.
Increases in median real salary for recent S&E graduates between 1993 and 2003 indicate relatively high demand for S&E skills during the past decade.

For all broad S&E fields, median real salaries grew faster over the decade for master’s degree recipients than for bachelor’s in the same field. This ranged from a 31.8% increase in median real earnings for recipients of physical science master’s degrees to a 54.8% increase for recipients of master’s degrees in computer and mathematical sciences. At the master’s level, however, non-S&E degrees also enjoy large increases in real median salary, growing by 52.7%.

Twenty-nine percent of all S&E degree holders in the labor force are age 50 or over. Among S&E doctorate holders in the labor force, 44% are age 50 or over.

By age 62, half of S&E bachelor’s degree holders had left full-time employment. Doctorate degree holders work slightly longer, with half leaving full-time employment by age 66.

Twenty-five percent of all college-educated workers in S&E occupations in 2003 were foreign born.

Forty percent of doctorate degree holders in S&E occupations in 2003 were foreign born.

Among all doctorate holders resident in the United States in 2003, a majority in computer science (57%), electrical engineering (57%), civil engineering (54%), and mechanical engineering (52%) were foreign born.

Women were 12% of those in S&E occupations in 1980 and 25% in 2000. However, the growth in representation between 1990 and 2000 was only 3 percentage points.

The representation of blacks in S&E occupations increased from 2.6% in 1980 to 6.9% in 2000. The representation of Hispanics increased from 2.0% to 3.2%. However, for Hispanics, this is proportionally less than their increase in the population.

Saturday Morning Science from NASA

photo of Don Petit

Saturday Morning Science from NASA:

Pettit prepared a solution of water, soap, and glycerin, and fashioned a bubble-wand from thin wire–a loop that could be re-sized from 3.5 cm (about 1.5 inches) to more than 15 cm (6 inches) in diameter. The experiment was ready. “But first,” recalls Petit, “I decided to try a ‘dry run’ with water only, no soap.”

He inserted the wand into a zero-g beaker and pulled it out again. “To my amazement,” he says, “when the 2-inch loop was withdrawn, a thin film of water clung tenaciously to the loop. I’ve never before witnessed such a large-scale film of water.”

See two videos and more information on the experiment on the International Space Station.

An explanation of surface tension

Previous post: Colored Bubbles