Category Archives: Science

Africa Scientific

Africa Scientific by Dr. Mohamed H.A. Hassan, Seed:

in Nigeria, the malaria group at the University of Ibadan is conducting research on a local disease problem, as is the Federal University of Technology-Minna, which has developed a typhoid vaccine for their own population. Makerere University’s Medical Biotechnology Laboratories in Kampala, Uganda, has an extensive molecular biology research and training program; among its most noteworthy efforts are studies of alternative treatments of river blindness, a fly-borne parasitic disease that just a decade ago afflicted one out of every three villagers in parts of Burkina Faso, Ghana, Nigeria and other nations.

I lived in Nigeria for a year, when I was a child, while my father taught chemical engineering as a Fulbright scholar. I still remember visiting factories, that I believe he was consulting for, as we traveled around West Africa. I returned to Africa in the 1990s to revisit Kenya and visit Egypt. See my travel photos from Kenya and a travel photo essay from Egypt.

John Hunter

Children’s view of Scientists in England

Science ‘not for normal people’, BBC News

The Science Learning Centre in London asked 11,000 pupils for their views on science and scientists.

Around 70% of the 11-15 year olds questioned said they did not picture scientists as “normal young and attractive men and women”.

For those, like me, that believe our future will be better with more scientists and engineers some of the findings are less than ideal:

Among those who said they would not like to be scientists, reasons included: “Because you would constantly be depressed and tired and not have time for family”, and “because they all wear big glasses and white coats and I am female”.

Some of the findings were positive:

They found around 80% of pupils thought scientists did “very important work” and 70% thought they worked “creatively and imaginatively”.

A related article from BBC News provides another look at the views of students: Science seen under the right conditions by Dr Daniel Glaser.

Another article on the BBC site talks about one way to encourage more student interest in science, Science ‘must teach experiments’. To interest students in learning about science it is important to have them engaged in physical experiments. We also need to continue to show the connection between science and engineering and the students lives. Providing examples of scientists and engineer that the student relate to (and can see as a friend or a future self) would also help.

The Naval Research Enterprise Intern Program

The Naval Research Enterprise Intern Program (NREIP), provides students the opportunity to participate in research at a Department of Navy (DoN) laboratory during summer breaks. Apply for NREIP online; the application deadline is 17 February 2006.

The goals of the NREIP are to encourage participating students to pursue science and engineering careers, to further education via mentoring by laboratory personnel and their participation in research, and to make them aware of DoN research and technology efforts, which can lead to employment within the DoN.

NREIP provides competitive research internships to approximately 230 college students (175 undergraduate students and 55 graduate students) each year. Participating students typically spend ten weeks during the summer doing research at approximately 12 DoN laboratories. To participate, a student must be enrolled at an eligible college/university (comprising approximately 160 institutions; eligibility is determined by the Office of Naval Research) and have completed at least their sophomore year before beginning the internship.

Microbes

photo of T4 bacteriophage

Photo: T4 bacteriophage, middle, is a virus that invades bacterial cells. Courtesy of the MicrobeLibrary.org

The MicrobeWorld web site includes an introduction to microbes – Microbes: what they are and what they do:

Microbes are single-cell organisms so tiny that millions can fit into the eye of a needle.

They are the oldest form of life on earth. Microbe fossils date back more than 3.5 billion years to a time when the Earth was covered with oceans that regularly reached the boiling point, hundreds of millions of years before dinosaurs roamed the earth.

Microbes types:

Archaea
These bacteria look-alikes are living fossils that are providing clues to the earliest forms of life on Earth.

Bacteria
Often dismissed as “germs” that cause illness, bacteria help us do an amazing array of useful things, like make vitamins, break down some types of garbage, and maintain our atmosphere.

Fungi
From a single-celled yeast to a 3.5-mile-wide mushroom, fungi do everything from helping to bake bread to recycling to decomposing waste.

Protista
Plant-like algae produce much of the oxygen we breathe; animal-like protozoa (including the famous amoeba) help maintain the balance of microbial life.

Viruses
Unable to do much of anything on their own, viruses go into host cells to reproduce, often wreaking havoc and causing disease. Their ability to move genetic information from one cell to another makes them useful for cloning DNA and could provide a way to deliver gene therapy.

Benjamin Franklin 300

Benjamin Franklin portrait

Benjamin Franklin was born 300 years ago today. In his life he took on many rolls: scientist, politician, businessman, publisher, author and diplomat. He was one of only two to sign both the Declaration of Independence and the United States Constitution.

Scientist, Diplomat And Wit: Franklin’s Birth Merits a Toast by Hillel Italie, Washington Post:

Herschbach, a Harvard University professor who has lectured frequently on Franklin, says: “Franklin’s scientific curiosity extended far beyond his adventures with electricity. He made important discoveries and observations concerning the motion of storms, heat conduction, the path of the Gulf Stream, bioluminescence, the spreading of oil films, and also advanced prescient ideas about conservation of matter and the wave nature of light.”

A look at what made Franklin tick by Polly Ross Hughes, Houston Chronicle:

Franklin actually benefited from having so little formal schooling. He had to educate himself. For precisely this reason, he didn’t know what he didn’t have to know, so he assumed he needed to know everything. He was incessantly curious. He simply wanted to know how the world works. He was formulating questions in his own mind about natural phenomena like lightning, like waves in the ocean or the Gulf Stream. I don’t know if most people know that Franklin was responsible for the lightning rod. Franklin’s bifocals have made life a lot easier for all sorts of people of middle age and older.

Benjamin Franklin and Lightning Rods by E. Philip Krider, Physics Today:

Franklin Institute in Philadelphia.

Benjamin Franklin was truly an amazing individual.

Building Nanotechnological Structures

New Nanotechnological Structures Reported for the First Time by Alex Lyda, Columbia News:

“You can think of nanocrystals as building blocks like the toy Lego, in which a larger structure can be assembled by locking in the pieces according to their shape and the way they prefer to join to each other,” O’Brien says. “Except all of this is on an incredibly small lengthscale — billionths of a meter.”

The Columbia/IBM team has borrowed ideas from the natural world, in which the right conditions can stimulate the slow growth of highly uniform structures out of miniature building blocks. Opals are an example of this phenomenon: opals consist of tiny spherical building blocks of silica packed into an ordered structure. In this new research, the materials used as building blocks are a variety of man-made nanocrystals with known useful magnetic or electronic properties.

“This work may lead to the development of an entirely new class of multifunctional materials in which there are cooperative interactions between the nanocrystal components,” says MRSEC director Irving P. Herman, also a professor of applied physics. “Moreover, the properties of these nanocrystals can be tailored during synthesis, and they can be deposited to form the desired ordered array by controlling particle charge and other properties. O’Brien’s study also demonstrates the value of vibrant collaborations between universities and industry.”

Video: Magnetic and Semiconducting Nanocrystals Can Self-Assemble, Says Stephen O’Brien, Columbia University

Intel Science Talent Search Semifinalists

Intel Science Talent Search Semifinalists Named

300 teens have been named semifinalists in the Intel Science Talent Search (Intel STS). The Intel STS is America’s oldest, most highly regarded pre-college science competition and heir to more than six decades of science excellence. View a list of the semifinalists.

The Intel Foundation will award $1,000 to each semifinalist with a matching amount going to their schools. Intel implemented the school award in 2000 and since then has contributed more than $2 million to help improve math and science in U.S. high schools.

Over the past 65 years, STS alumni have received more than 100 of the world’s most coveted science and math honors including six Nobel Prizes, three National Medals of Science, 10 MacArthur Foundation Fellowships, and two Fields Medals.

This year’s semifinalists were selected from 1,558 entrants representing 486 high schools in 44 states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands and an overseas school. Their research projects cover all disciplines of science including biochemistry, chemistry, physics, mathematics, engineering, behavioral science and medicine and health. Students range in age from 15 to 18 with females representing 53 percent of the total entrants.

More than 100 top scientists from a variety of disciplines review and judge all Intel STS entries and examine each individual’s research ability, scientific originality and creative thinking. From these 300 semifinalists, 40 finalists will be announced on Jan. 25. These students will take an all-expense-paid trip to Washington, D.C. to attend the Intel Science Talent Institute. There they will participate in final judging and compete for college scholarships totaling more than $500,000. Winners will be selected based on rigorous judging sessions and announced at a black-tie banquet on March 14.

Science Service is the nonprofit organization which has administered the Science Talent Search since its inception in 1942. The mission of Science Service is to advance the understanding and appreciation of science. In addition to its education programs, Science Service publishes the weekly magazine Science News.

Symbiotic relationship between ants and bacteria

Study reveals classic symbiotic relationship between ants, bacteria

Ants that tend and harvest gardens of fungus have a secret weapon against the parasites that invade their crops: antibiotic-producing bacteria that the insects harbor on their bodies.

“Every ant species [that we have examined] has different, highly modified structures to support different types of bacteria,” says Currie. “This indicates the ants have rapidly adapted to maintain the bacteria. It also indicates that the co-evolution between the bacteria and the ants, as well as the fungus and parasites, has been occurring since very early on, apparently for tens of millions of years.”

Furthermore, Currie says, the fact that the species have coexisted for so long means there might be a mechanism in place to decrease the rate of antibiotic resistance – which could help address a significant problem facing modern medicine. “We can learn a lot about our own use of antibiotics from this system,” he says.

Read more about the overuse of antibiotics

DNA Offers New Insight Concerning Cat Evolution

DNA Offers New Insight Concerning Cat Evolution, Nicholas Wade, New York Times:

Before DNA, taxonomists had considerable difficulty in classifying the cat family. The fossil record was sparse and many of the skulls lacked distinctiveness. One scheme divided the family into Big Cats and Little Cats. Then, in 1997, Dr. Johnson and Dr. O’Brien said they thought most living cats fell into one of eight lineages, based on the genetic element known as mitochondrial DNA.

Having made further DNA analyses, the researchers have drawn a full family tree that assigns every cat species to one of the lineages. They have also integrated their tree, which is based solely on changes in DNA, with the fossil record. The fossils, which are securely dated, allow dates to be assigned to each fork in the genetic family tree.
…
The leopard lineage appeared around 6.5 million years ago in Asia. The youngest of the eight lineages, which led eventually to the domestic cat, emerged some 6.2 million years ago in Asia and Africa, either from ancestors that had never left Asia or more probably from North American cats that had trekked back across the Bering land bridge.

Photos from Curious Cat Travel Photos – Kenya

China’s Economic Science Experiment

The Great Chinese Experiment, Horace Freeland Judson, MIT Technology Review. China is betting its economic health on becoming a world leader in the sciences. But will it succeed? This long detailed article provides insight into the challenges, practices and potential for China’s economy and scientific innovation going forward.

“The major scientific program running right now in China is this one, called 97-3 Program,” Professor Cao said. “A major huge program to catch up with the scientific development of the whole world. Started in 1997, March. This program is for basic research. According to the needs of the nation.” Technological applications? Or basic science? “Both,” she said with a sharp nod. The goal is split in two? “Yes,” she said. “I think that the major scientific program is the whole-world program. Not just for China. The second is the urgent requirement for our country’s social and economic development.”

The 97-3 Program concentrates research in six areas, agricultural biotechnology, energy, informatics, natural resources and the environment, population and health, and materials science. Cao’s own concern is with population and health. In this area the research is divided into 20 fields. She took me through them with the aid of a 33-page position paper she had put together in anticipation of my visit. The list is diverse, the projects ambitious. Yet even the most basic research — in stem cells, for example — has been defined in terms of immediate applications.

Information on the China 973 basic research program from the Chinese government’s web site:

Stipulation and implementation of the 973 Program is an important decision of our country to carry out the two development strategies of ” Rejuvenating the country through science and technology ” and ” sustainable development”, as well as to further reinforce basic research and science and technology work. It is an important measure of our country to achieve the great objectives of China’s economic, scientific & technology, and social development by 2010-2050 , to upgrade the sustainable S & T innovative capabilities and to meet the challenges of the new century.

While the engineering credentials of China’s leadership is noted often, it is still interesting to note that China’s 9 senior government officials are all engineers. A Technocrat Riding a Wild Tiger:

When China’s leaders meet with Hu each week in Beijing’s government district, Zhongnanhai, they could spend hours discussing cables, switches, tool-making machines and control devices. That’s because every one of them has a degree in engineering. The president himself, the son of a tea merchant from Jiangsu Province, trained to build hydroelectric power stations, while the others hold degrees in electrical engineering, metallurgy and geology.