Comment

Comment by Dr. Krishna Kumari Challa on May 26, 2015 at 9:50am

Comment by Dr. Krishna Kumari Challa on May 23, 2015 at 9:29am

‘Plastic Rice’. 'Synthetic rice'. Have you heard these terms before? One more rice contaminant!
Several Indonesian regions are on alert after lab tests confirmed rice found in the West Java city of Bekasi, on the outskirts of Jakarta, contained plastic compounds.

Lab results from state-controlled inspection firm Superintending Company of Indonesia, or Sucofindo, revealed that two rice samples collected from Mutiara Gading market in Bekasi contained contained benzyl butyl phthalate, 2-ethylhexyl phthalate and diisononyl phthalate, also known as plasticizer.

“The two samples of rice look the same; results of our tests show that both contain plastic compounds,” Adisam Z.N., Sucofindo’s laboratory examinations head, said in Jakarta on Thursday.

“Plasticizers are usually used in the production of cables and plastic pipes. In Europe, these substances have been banned for use in children’s toys, let alone as food substances,” he added.

Long-term consumption of the synthetic rice, dubbed “plastic rice” by local media, can cause abdominal pain and even cancer.

Fears of the so-called synthetic rice have spread across the country after a police raid at Mutiara Gading found evidence of it mixed with real grains of rice.
Synthetic rice had slightly different physical attributes compared to natural grains, such as sharper tips.

Rice traders in Jakarta have admitted to not knowing the difference before they were informed by authorities.
http://thejakartaglobe.beritasatu.com/news/authorities-alert-plasti...

Comment by Dr. Krishna Kumari Challa on May 23, 2015 at 9:03am

“Young Blood” Anti-Aging Mechanism Called into Question

A protein in the blood of young mice that seemed to rejuvenate older animals may do the opposite
http://www.nature.com/news/young-blood-anti-ageing-mechanism-called...

Comment by Dr. Krishna Kumari Challa on May 19, 2015 at 8:56am

Scientists want contracts to guarantee they won't be muzzled
Canada’s muzzled federal scientists claim they are now being barred from meeting with their union at work to discuss its bargaining proposals to restore “scientific integrity” in government, says the union.

Debi Daviau, president of the Professional Institute of the Public Service of Canada, is leading scientists Tuesday in a string of outdoor protests at labs and science-based departments across the country largely because the union can no longer get inside to meet with their members as it once did.
Federal scientists were a thorn in the Conservatives’ side during the government’s downsizing, accusing them of using federal policies to muzzle them, change or suppress their findings and undermine their ability to do their jobs.
The policy would touch on a range of issues and existing policies, but the key proposal is the “right to speak.” The union wants a clause guaranteeing scientists the right to express their personal views while making clear they don’t speak for government.

The other big demand is professional development, allowing scientists to attend meetings, conferences and courses to maintain their professional standards.

They also want contract changes so half of the revenues generated by their inventions and other intellectual property will be plowed back into government research to shore up budgets hit by spending cuts and to attract top talent.

PIPSC argues the changes would ensure science is done in the public interest, information and data are shared, and that scientists can collaborate and be protected from political interference, coercion or pressure to alter data. The policy would touch on a range of issues and existing policies, but the key proposal is the “right to speak.”
http://ottawacitizen.com/news/national/scientists-want-contracts-to...

Comment by Dr. Krishna Kumari Challa on May 19, 2015 at 8:49am

Microbes with potential to cleanse waterways

17 hours ago by Amal Naquiah

A seven-year scientific study has revealed that microbial communities in urban waterways has the potential to play an important role in cleansing Singapore's waterways and also act as raw water quality indicators.

The study found that canals designed to channel rainwater host microbial communities that could remove and neutralise organic pollutants in raw water. These organic pollutants are currently at trace levels in raw water – well below the United States-Environmental Protection Agency (US-EPA) drinking water standards – which is removed during water treatment processes.

Researchers from the NUS Environmental Research Institute (NERI) and the Singapore Centre for Environmental Life Sciences Engineering (SCELSE) at Nanyang Technological University (NTU Singapore) have discovered that the untapped natural ability of microbial communities could be harnessed to treat raw water even before undergoing treatment.

This process is known as 'bioremediation', a treatment that uses naturally occurring organisms to break down organic pollutants.

The study, which was published in the scientific journal Environmental Science & Technology, was conducted around the Ulu Pandan catchment area in collaboration with the Singapore's national water agency, PUB.

-Environmental Science & Technology

Comment by Dr. Krishna Kumari Challa on May 19, 2015 at 8:39am

Developing the Critical Thinking Skills of Astrobiology Students through Creative and Scientific Inquiry
Scientific inquiry represents a multifaceted approach to explore and understand the natural world. Training students in the principles of scientific inquiry can help promote the scientific learning process as well as help students enhance their understanding of scientific research. Here, we report on the development and implementation of a learning module that introduces astrobiology students to the concepts of creative and scientific inquiry, as well as provide practical exercises to build critical thinking skills. The module contained three distinct components: (1) a creative inquiry activity designed to introduce concepts regarding the role of creativity in scientific inquiry; (2) guidelines to help astrobiology students formulate and self-assess questions regarding various scientific content and imagery; and (3) a practical exercise where students were allowed to watch a scientific presentation and practice their analytical skills. Pre- and post-course surveys were used to assess the students' perceptions regarding creative and scientific inquiry and whether this activity impacted their understanding of the scientific process. Survey results indicate that the exercise helped improve students' science skills by promoting awareness regarding the role of creativity in scientific inquiry and building their confidence in formulating and assessing scientific questions. Together, the module and survey results confirm the need to include such inquiry-based activities into the higher education classroom, thereby helping students hone their critical thinking and question asking skill set and facilitating their professional development in astrobiology. Key Words: Scientific inquiry—Critical thinking—Curriculum development—Astrobiology—Microbialites. Astrobiology 15, 89–99.
http://online.liebertpub.com/doi/abs/10.1089/ast.2014.1219

Comment by Dr. Krishna Kumari Challa on May 18, 2015 at 9:11am

If you hear some strange noises from the sky, don't worry! Here is why you hear them:

It is earth’s ‘background noise’ according to scientists!

The unsettling noises were heard recently from Europe to Canada, sounding like groans and powerful horns.

According to NASA, the Earth has ‘natural radio emissions’.

‘If humans had radio antennas instead of ears, we would hear a remarkable symphony of strange noises coming from our own planet. Scientists call them “tweeks,” “whistlers” and “sferics.”

‘They sound like background music from a flamboyant science fiction film, but this is not science fiction. Earth’s natural radio emissions are real and, although we’re mostly unaware of them, they are around us all the time.’

University of Saskatchewan physics professor Jean-Pierre St. Maurice said that it’s electromagnetic noise emitted from auroras and radiation belts.

'They sound like background music from a flamboyant science fiction film, but this is not science fiction. Earth's natural radio emissions are real and, although we're mostly unaware of them, they are around us all the time.’

For instance lightning can produce eerie-sounding radio emissions, Nasa added.

Earthquakes can also produce sub-audible sounds, according to seismologist Brian W Stump from the Southern Methodist University in Dallas.

Comment by Dr. Krishna Kumari Challa on May 18, 2015 at 6:05am

People against  synthetic turf...because it is toxic

Artificial turf fields, cushioned with recycled crushed tires and increasingly in demand for athletic complexes, are getting some serious pushback.

They are worried about alleged health risks in the ant-size rubber pieces that cushion the bright synthetic grass.

The pellets, made up of pulverized tire bits and used to cushion fields and anchor synthetic grass, may contain known carcinogens such as arsenic and benzene and other harmful substances like lead, according to a report by the US Environmental Protection Agency.

Artificial turf advocates say there are multiple studies that show fields are safe, while critics argue that there are no conclusive tests to prove such claims and that waiting for definitive evidence of a health hazard leaves children unprotected.

Athletes who play on the fields are well acquainted with the black pellets – a spray of which is often kicked up by bouncing balls and running children, and gets into cleats and tracked into homes and mixed with laundry after practice. The authorities recommend “common sense” to minimize exposure to chemicals that may be in crumb rubber, including washing hands after playing, and taking shoes off before entering homes.

- http://necir.org/2015/05/10/toxic-turf/

Comment by Dr. Krishna Kumari Challa on May 16, 2015 at 9:41am

Rogue Antimatter Found in Thunderclouds

A detector fitted on an airplane picked up a signature spike in photons that does not fit any known source of antiparticles
http://www.scientificamerican.com/article/rogue-antimatter-found-in...

--

Jahn-Teller-metal: Scientists discover new state of matter

Scientists at Tokohu University in Japan have discovered a new state of matter called the ‘Jahn-Teller-metal’ that resembles an insulator, superconductor, metal and magnet all rolled into one.

The team made the discovery by studying a superconductor made from carbon-60 molecules or “buckyballs”.

Researchers said the research could help develop new molecular materials that are superconductors at even higher temperatures.

The research provides important clues about how the interplay between the electronic structure of the molecules and their spacing within the lattice can strengthen interactions between electrons that cause superconductivity.

Superconductors are a large and diverse group of materials that offer zero resistance to electrical currents when cooled below a critical temperature (TC).

Superconducting lattices of fullerides - C60 plus three alkali-metal atoms - have been studied for more than two decades, and provide an interesting test bed.

This research, described in Science Advances, involves caesium fulleride (Cs3C60) in a face-centred-cubic lattice with a Cs3C60 molecule at each lattice site.

Comment by Dr. Krishna Kumari Challa on May 16, 2015 at 9:37am

Future cameras may focus light by relying on flat lenses. Physicists are making major advancements with planar lenses that can scatter and bend rays of light, sans bulge.

The latest rendition, detailed online in February in the journal Science, has moved beyond proof of concept: it perfectly focuses red, green and blue light, which can be combined to yield multicolor images. The team has since crafted a larger prototype, and it “works exactly like the prediction,” Capasso says. Such lenses could reduce the bulk and cost of photography, microscopy and astronomy equipment. And they could one day be printed on flexible plastic for thin, bendable gadgets.

• ‹ Previous
• 1
• …
• 670
• 671
• 672
• 673
• 674
• …
• 839
• Next ›
• Page