Archive for the ‘Research’ Category

Messenger Spacecraft Reveals New Facts About Mercury.

The New York Times (6/17, A23, Chang, Subscription Publication) reports new results from the Messenger spacecraft orbiting around Mercury “is painting a more vibrant picture of the solar system’s innermost planet.” Scientists, reporting the finds at a NASA news conference, explained how the planet has unique features in the solar system “and its mineralogy is vastly different from the Moon’s.” Scientists have also discovered Mercury’s magnetic field is different in the northern and southern hemisphere. These findings “could reveal how Mercury formed and changed over the 4.5-billion-year history of the solar system, which in turn could help astronomers understand the panoply of Earth-size planets around other stars and the possibility of conditions friendly for life on them.” Scientists have already been able to eliminate one of three current theories explaining how Mercury formed.


Turning Proteins Into Glass

photo of David Needham and Deborah Rickard

Dr. David Needham and graduate student Deborah Rickard

Duke University researchers developed a glassification technique that could bring about protein-based drugs that are cheaper to make and easier to deliver than current techniques which render proteins into freeze dried powders to preserve them.

Duke engineer and chemist David Needham describes this glassification process as “molecular water surgery” because it removes virtually all the water from around a dissolved protein by almost magically pulling the water into a second solvent.

“It’s like a sponge sucking water off a counter,” said Needham, a professor of mechanical engineering and materials science at Duke’s Pratt School of Engineering, who has formed a company called Biogyali (“gyali” means glass in Greek) to develop the innovation. That firm has also applied to patent the idea of turning proteins into tiny glass beads at room temperature for drug delivery systems.

Preliminary evaluations by his senior scientist David Gaul and a team of undergraduate students showed that four test proteins undergoing such procedures retained all or most of their original activity when water was restored. His group has received about $1 million from the National Institutes of Health grants for the research.

Having devised a way to turn proteins into glassy microbeads measuring only about 26 millionths of a meter in diameter, Needham hopes those can be directly injected into the body for use as “biologic” drugs. These microbeads might also be packaged for slow time-release by surrounding them with a polymer that would biodegrade over time, though how to do that has not been resolved yet, he added.

Their discovery of protein glassification grew out of a basic exploration of a general question: What can dissolve in what? Needham’s research group found, for example, that air and the organic liquid chloroform will both dissolve in water at about the same rate. It also found that water will dissolve in decanol, a substance it cannot even mix with in large quantities.

Proteins are currently dried into clumpy, irregular powders by several industrial processes — usually freeze-drying — to protect them from such microbe damage. Drying also avoids the chemical breakdowns that can also occur when proteins are kept in solution. “But in the freeze-drying process itself, some very sensitive biologic drugs can also get damaged,” Needham said.

Freeze-drying proteins into solids is also slower and more expensive than glassifying them, he added. And the resulting “flaky” powder is harder to handle than glassified beads. Glassification “is a fast process,” said Gaul, a senior research scientist in Needham’s lab. Unlike freeze-drying, “we can dry particles within minutes, if not seconds, and don’t need any specialized equipment.”

Full press release

Related: Engineering students compete to build a robo-mowerSurface Antennas Conform to Any ShapeEngineer Tried to Save His Sister and Invented a Breakthrough Medical Device


Male Pipefish Behavior: A new NSF Funded Study show Male Pipefish give birth but some bond less with their offspring….

Female Pipefish (left) and Pregnant Male Pipefish (right)

Male Pipefish and Seahorses are the only male species able to get pregnant and give birth, but a new study conducted by Kim Paczolt and Adam Jones, researchers in the Department of Biological Science at Texas A&M University have found some fascinating links on how pipefish bond with their offspring during the postnatal period. The father who usually carries the embryos in a specialized sac during the prenatal period are quite nurturing but some fish alter their relationship with offspring after birth in accordance with their fondness for the mother.

The study looked at the reasons why some offspring flourish while others do not. Almost all the studies confirmed that the offspring who survived most often the male were fond of the female.  Showing an important link between the male’s mating choice and its offspring.

“The bottom line seems to be, if the male likes the mom, the kids are treated better,” Paczolt explains.

“Why this occurs, we don’t fully understand, but our findings are quite specific about this relationship between the male pipefish and its mate. If the male prefers the female, he treats their mutual offspring better.”

Video: Male Pregnancy: The Dark Side

This research was funded by the National Science Foundation.


Science and Engineering Indicators 2010

The National Science Board’s Science and Engineering Indicators 2010 gives a comprehensive picture of the rise of developing nations in Asia, with China as the main engine, and gradual erosion of U.S. leadership. Examples:

  • North America’s share of world R&D activity between 1996 and 2007 dropped from 40% to 35% and the European Union’s share from 31% to 28%. The Asia-Pacific share increased from 24% to 31% “even with Japan’s comparatively low growth.”
  • American multinationals are shifting the R&D they conduct overseas from Europe to emerging Asian markets, whose share grew from 5% in 1995 to 14% in 2006.
  • China’s domestically earned natural science and engineering doctorates have shot up more than tenfold since the early 1990s, approaching the number awarded in the United States.
  • The share of U.S. engineering doctorates awarded to temporary and permanent visa holders rose from 51% in 1999 to 68% in 2007. Nearly three-fourths of these foreign Ph.D recipients were from East Asia or India.
  • From 1995 to 2008, the U.S. and E.U.’s combined share of world scholarly articles dropped from 69% to 59%, while Asia’s expanded from 14% to 23%. Over the past 20 years, the number of engineering research articles in the United States has grown by less than 2% annually. China’s engineering article output grew by close to 16% annually.
  • The share of patents granted to U.S.-based inventions by the U.S. Patent and Trademark Office is shrinking, from 55% in 1995 to 49% in 2008. In 1997, 34% of high-value patents had U.S. inventors; by 2006, this had slipped to 30%.
  • Related: NSB Report on Improving Engineering EducationCountry H-index Rank for Science PublicationsScience and Engineering Indicators – Workforce (2006)Worldwide Science and Engineering Doctoral Degree Data (2004 report)


    Undergraduate Researchers Win Big at “Energy Challenge” With New Turbine Converter

    International Future Energy Challenge winners, Jonathan Baker and Christopher Hamilton created a low-cost wind turbine that transfers a maximum amount of energy to a battery. How did they do it? They contribute their success to time spent doing undergraduate research.

    Photo Courtesy of Gustavo Gamboa from CentralFloridaFuture.com

    Photo Courtesy of Gustavo Gamboa from CentralFloridaFuture.com

    Baker, Hamilton, and two fellow electrical engineering majors spent over a year preparing their “low-cost wind turbine energy maximizer” for the International Future Energy Challenge in Australia last July.

    The two-some invented a three-phase AC/DC converter (also known as “The Pegador” to its creators) to make the energy produced by wind turbines more efficient. The Pegador took home first prize.

    After enjoying the success of placing first, Baker and Hamilton garnered success among engineering peers from universities worldwide.

    Their participation in undergraduate research is what they claim to be the ultimate stepping-stone for future success within the scientific community and public-at-large.

    “Going from book knowledge to tangibility experience has really accelerated my future career,” Baker said. “I’ve graduated with not only an honors degree, but an actual invention and experience.”

    “Today’s engineering students want to make difference in the world … they want to make the world a better place through technological innovations that save lives and help clear the environment.” – Issa Batarseh, professor and director of the School of Electrical Engineering and Computer Science. Batarseh also oversaw the project.

    There is no release date for the turbine at this time.


    105-Day Simulation Chamber Research for Travel to Mars

    Image provided by www.parabolicarc.com

    Image provided by www.parabolicarc.com

    From March 31 through July 14, four Russians and two European engineers participated in a 150-day simulation chamber study to prepare for a future trip to Mars. The project was funded by the Houston-based National Space Biomedical Research Institute (NSBRI) and was also a partnership between the Russia’s Institute of Biomedical Problems and the European Space Agency.

    The six international scientists conducted many experiments and also acted out realistic mission scenarios, such as emergency situations and 20 minute communications delays.

    Dr. David F. Dinges, leader of the NSBRI group funded from University of Pennsylvania School of Medicine and Rutgers, explained the benefits of conducting research with this special chamber:
    “These tests and interventions have an impact beyond the space program. Many people work night shifts and in high-stress, confined environments that require alertness, such as power plant control rooms, railroad systems, hospitals, military operations, and fire and rescue situations. The things that we are learning here about how to enhance performance will be useful in many work environments… Additional goals were to see how different mission situations affected the various performance measures and to evaluate whether the interventions could indeed improve performance.”

    For the NSBRI project overview, the following areas were addressed for research:
    1) Operational Evaluation of a Photic Countermeasure to Improve Alertness, Performance, and Mood During Night-Shift Work
    2) Monitoring of Crew Neurobehavioral Functions
    3) Crew Interactions and Autonomy During Long-Duration Isolation and Confinement

    The isolation facility was impressively built with “several interconnected, modules containing medical and scientific research areas, living quarters, a kitchen, a greenhouse, and an exercise facility.” Although this project was considered a success, it is a precursor a 520-Day research mission NSBRI hopes to schedule in 2010.


    Scientists Close to Creating Artificial Human Brain

    Model of Human Brain

    Image provided by bbc.co.uk


    Scientists in Switzerland believe they are on the cusp of creating the first, fully functional, artificial human brain. The Blue Brain Project was launched in 2005 by a group of scientists in Switzerland who hope to reverse engineer the human brain.

    So far the Blue Brain Project has already successfully simulated the elements of a rat brain, however Henry Markram, director of the Blue Brain Project, is confident that his team should now focus all their attention on the human brain, as opposed to recreating the brains of other animals. It is not impossible to build a human brain and we can do it in 10 years, exclaimed Markram.

    Markram and other scientists have focused on the neocortex of the brain. The neocortex is made up of thousands of neurons which contribute to the higher functions of the brain, such as communication, sensory perception, reasoning, and motor skills.

    The project now has a software model of “tens of thousands” of neurons – each one of which is different – which has allowed them to digitally construct an artificial neocortical column. Although each neuron is unique, the team has found the patterns of circuitry in different brains have common patterns.

    “Even though your brain may be smaller, bigger, may have different morphologies of neurons – we do actually share the same fabric,” [Markram] said. “And we think this is species specific, which could explain why we can’t communicate across species.”

    To recreate the human brain model, Markram and his team use the IBM Blue Gene Machine, which has 10,000 processors (one processors for each neuron of the brain).


    Closing the Gap for Good

    New research shows that gender disparity in math skills is due to culture, not biology

    Photo courtesy of neuronarrative.wordpress.com/

    For as long as girls and boys have been attending co-ed schools, there has been a perceived gender gap in mathematical abilities that has seemingly led to a deficit in the number of women who will go on to study higher levels of math and to pursue careers in mathematically-related fields. This has always been attributed to an innate biological tendency of men to have the capacity to excel at mathematical reasoning, a tendency that was assumed to be lacking in women. However, a recent report from researchers at the University of Wisconsin-Madison proposes that the reasons for this disparity are in fact purely cultural, suggesting that it may be possible for our society to lessen or even close the gap completely.

    Photo courtesy of www.lovetoknow.com

    Photo courtesy of www.lovetoknow.com

    Janet Mertz and Janet Hyde, two Wisconsin professors, were puzzled by the fact that a gender disparity in math skills is not present in certain countries and cultures, particularly those in which a large degree of gender equality exists. In analyzing data from various tests and studies of male and female students at various educational levels, �the Wisconsin researchers document a pattern of performance that strongly suggests that the root of gender disparity in math can be pegged to changeable sociocultural factors. Such factors either discourage or encourage girls and young women in the pursuit of the skills required to master the mathematical sciences.� In other words, society is the cause for any and all disparities in skill level, and the commonly held belief that women are less capable in mathematics is a self-fulfilling prophesy.

    Much of the evidence for the argument that boys are naturally inclined to be better at math stems from past studies that show greater variability in the skill levels of males, meaning that they are more likely to exhibit extremely high or extremely low skill levels in the subject. However, Mertz and Hyde prove in their research that this is not the case in some countries, several of which can boast of girls scoring in the 99th percentile in math skills at the same rate that boys do.

    In the United States, girls are now performing on par with boys at all levels of math and are just as likely to choose advanced math classes in high school. Moreover, the gap is narrowing between the number of mathematically gifted boys and girls, suggesting that we are perhaps moving closer to achieving the results of those countries with a higher measure of gender equality. The number of female doctoral-level mathematics students has climbed to 30% from 5% in 1950, most likely a result of changing perceptions of the role of women in mathematical and scientific research.

    Though hopeful, these results appear dim in comparison to statistics regarding gender disparities as well as overall mathematical skill level in other countries, particularly those of East Asia. Here, girls consistently reach the gifted level just as often as boys do, and both sexes exhibit median scores that are higher than those of the top ten percent of US students. In their report, Mertz and Hyde emphasized that �the future of the U.S. economy depends upon American society doing a better job of identifying and nurturing mathematically talented youth, regardless of gender, race or ethnicity.� Leaving women out of the equation will have devastating effects on the growth and development of the United States and will severely hinder our efforts at achieving global economic competitiveness with those countries which foster mathematical abilities in all their students.

    For more information on this research, check out the article Culture, Not Biology, Underpins Math Gender Gap at ScienceDaily.com.

    Related: Looking For Science And Engineering Talent In All The Right PlacesEnhancing Science, Technology, Engineering, and Math Education Act of 2008Senator Proposes Free College Tuition for Math and Science Majors Fun k-12 Science and Engineering Learning


    KASPAR: The Friendly Robot

    Image provided by the University of Hertfordshire

    Image provided by the University of Hertfordshire


    Meet KASPAR: A small, human-like robot designed to teach children with autism about social interaction. KASPAR stands for Kinesics and Synchronisation in Personal Assistant Robotics and was developed by the Adaptive Systems Research Group at the University of Hertfordshire.

    According to the Adaptive Systems Research Group, the goal of the project is not to create a robot that is indistinguishable from a human, but rather to teach disabled children how to improve their playing and social interaction skills through a robotic toy:

    “Our aim is to study what types of human-robot interactions a minimal set of expressive robot features can afford. The goal is not perfect realism, but optimal realism for rich interaction. KASPAR has 8 degrees of freedom in the head and neck and 6 in the arms and hands. The face is a silicon-rubber mask, which is supported on an aluminum frame. It has 2 DOF eyes fitted with video cameras, and a mouth capable of opening and smiling.”

    For a demonstration of KASPARs abilities, please click on the video below:

    Another interesting feature of KASPAR is the introduction of artificial skin. Researchers hope to install sensor technology in the robots skin, which may provide tactical feedback from areas of the robots body. This innovation is known as Roboskin:

    The goal is to make the robot able to respond to different styles of how the children play with KASPAR in order to help the children to develop socially appropriate playful interaction (e.g. not too aggressive) when interacting with the robot and other people.

    Professor Kerstin Dautenhahn is currently leading a team of researchers at the University of Hertfordshire, who are working on developing the robot skin and embedded tactical sensors. Professor Dautenhahn explains, Children with autism have problems with touch, often with either touching or being touched. The idea is to put skin on the robot as touch is a very important part of social development and communication and the tactile sensors will allow the robot to detect different types of touch and it can then encourage or discourage different approaches.

    *For more information on KASPAR, please visit the original press release from the University of Hertfordshire.

    *For a BBC news presentation on KASPAR, please click here.


    Going Polar

    Scientists Bundle Up and Come Together to Study Climate Change

    Robotic mini submarines and seals sporting electronic tags may sound like images straight out of a science fiction film, but these are just two of the many projects completed by scientists as part of the 2007 International Polar Year. This collaborative project, which actually spans two years and covers two full annual cycles of both the Arctic and Antarctic regions, incorporates the work of thousands of scientists from over 60 nations and focuses on the study of the biological, physical and social effects of climate change on the polar regions.

    Photo courtesy of Monterey Bay Aquarium Research Institute

    Photo courtesy of Monterey Bay Aquarium Research Institute

    The diverse array of projects focus on atmosphere, ice, land, oceans, people, and space, as well as the way in which these individual areas of study relate to global warming and to each other. In one experiment, a small submarine was sent on an undersea mission to track changes in ocean temperature and their effect on the West Antarctic Ice Sheet, a 2.2 million kilometer sheet of glacial ice that covers the western part of Antarctica. In another study, elephant seals were unknowingly given a mission of their own they were equipped with special tags used to study their habits as well as to aid in climatic field research.

    The main goal of IPY is to draw attention to the urgency of climate change by demonstrating its effects on the environment as well as on society. These consequences are both direct (as in the decomposition of permafrost in the northern hemisphere) and indirect (as in changes to the food systems of inhabitants of Arctic communities), but all are drastically important to the functioning of our planet as whole in addition to that of its polar regions.

    The 2007 IPY, which was the fourth of its kind, finished up in the spring of 2009. For more information, check out the International Polar Year web site.

    Read: Remote Environmental Monitoring Units: Mapping the Bottom of Sandy Hook Bay, Underwater Robot Competition Generating Interest Among Students, Geoengineering is Cool!


    Search on this site:


    Categories:

    Links:

    Tags:

    appropriate technology ASEE career Civil Engineering Computer Science design Diversity Do-it-yourself economics Education Electrical Engineering energy engineering engineering education engineering projects engineers Engineers Without Boarders Environmental Engineering Envirotech fellowships funding Future green engineering How Things Work Innovation internet k-12 making a difference managing engineers materials engineering mechanical engineering NSF project management Research robots science science literacy Society technology The Economy The National Interest university webcast women workplace
  • Archives: