New device detects heart disease using less than one drop of blood
Testing people for heart disease might be just a finger prick away thanks to a new credit card-sized device created by a team of researchers from Harvard and Northeastern universities in Boston. In a research report published online in The FASEB Journal ( http://www.fasebj.org ), they describe h...
CO2 drop and global cooling caused Antarctic glacier to form
New Haven, Conn. Global climate rapidly shifted from a relatively ice-free world to one with massive ice sheets on Antarctica about 34 million years ago. What happened? What changed? A team of scientists led by Yale geologists offers a new perspective on the nature of changing climatic condition...
World fertilizer prices drop dramatically after soaring to all-time highs
World fertilizer prices began dropping dramatically in late 2008 after reaching all-time highs around April.
The price of urea, the world's most common nitrogen fertilizer, rose from about $280 to $405 per ton in 2007 and reached $452 in April 2008. The price then soared to $815 per ton in Aug...
Exercise increases brain growth factor and receptors, prevents stem cell drop in middle age
BETHESDA, Md. (Nov. 18, 2008) − A new study confirms that exercise can reverse the age-related decline in the production of neural stem cells in the hippocampus of the mouse brain, and suggests that this happens because exercise restores a brain chemical which promotes the production and mat...
Lab in a drop
This release is available in German .
Analysis and diagnosis in a chip format are coming of age, but their practical application has been limited because until now, the sample usually had to be prepared separately and on a nonminiaturized scale. Jrgen Pipper and his team at the Institute of ...
Huddling and a drop in metabolism allow penguins to survive the South Pole cold
March of the Penguins, the Oscar® winning documentary, showed how the emperor penguins endure their incubation and fast for four dark and bitterly cold months each year. The tight huddling among these South Pole penguins is a key energy-saving mechanism that allows them to endure their extremely ha...
Measles Deaths Worldwide Drop By Nearly 40% Over Five Years
The World Health Organization (WHO) and the United Nations Children's Fund (UNICEF) today announced that countries are on target to halve deaths from measles, a leading vaccine-preventable killer, by the end of this year. Global measles deaths have plummeted by 39%, from 873 000 in 1999 to an estim...
In the migratory marathon, parasitized monarchs drop out early
It seems survival of the fittest affect every organism on Earth, even Monarch butterflies. Migratory Monarchs seem more resistant than non-migratory ones to parasite infections; scientists just uncovered why it is so. Explanation : infected monarchs quite don't make it while migrating long distanc...
University of Hawaii at Manoa researchers reveal ocean acidification at Station ALOHA
...strial age, CO 2 -driven acidification of the surface oceans has already caused a 0.1 unit lowering of pH, and models suggest that another 0.3 pH unit drop
by the year 2050 is likely. Continued acidification of the sea may have a host of negative impacts on marine biota, and has the potential to alter th...
Venomous sea snakes play heads or tails with their predators
... among the most toxic known in all snake species.
When hunting for food sea snakes probe crevices and coral formations, temporarily forcing them to drop
their guard to threats from the surrounding waters and making them highly vulnerable to attack. However, the Yellow-lipped Sea Krait has been found to...
K-State researchers say after-school programs should promote activity, healthy nutrition
...d that quality after-school programs are an important contributor to children's physical activity.
"Participation in after-school programs tends to drop
with increasing age as parents believe their children can be at home without adult supervision," Dzewaltowski said. "Parents should strive to place th...
DNA computation gets logical at the Weizmann Institute of Science
Shapiro and his team at Weizmann introduced the first autonomous programmable DNA computing device in 2001. So small that a trillion fit in a drop
of water, that device was able to perform such simple calculations as checking a list of 0s and 1s to determine if there was an even number of 1s. A n...
A crystal ball for brain cancer?
...ite therapy with surgery, radiation and chemotherapy, the average glioblastoma patient lives only 12 to 15 months after diagnosis.
Survival rates drop
even lower if the tumor returns. Conventional therapies produce little benefit; only 8 to 15 percent of patients survive without tumor growth six mon...
Jet-propelled imaging for an ultrafast light source
...ging also depends partly on knowing how the sample was oriented in the beam easy to do with a large crystal, not so easy to do with a sample inside a drop
of liquid whizzing across the beam. It may be possible to orient flying droplets by optical methods such as polarized laser beams or with specially sh...
Music is the engine of new U-M lab-on-a-chip device
...d so on. And because the cavities don't communicate with each other, I can vary the strength of the individual notes within the chords to move a given drop
faster or slower."
Burns describes the set-up as the reverse of a bell choir. Rather than ringing a bell to create sound waves in the air, which a...
Herbicide diversity needed to keep Roundup effective
Fields that had three resistant weeds for every susceptible weed while using only Roundup and Roundup Ready crops saw weed populations drop
to one resistant weed for every six susceptible weeds while rotating herbicides as Johnson suggests. That rotation also may lead to a 95 percent decre...
Ozone, nitrogen change the way rising CO2 affects Earth's water
The amount of water that plants give up depends on how much carbon dioxide is present in the atmosphere. Studies have shown that despite a global drop
in rainfall over land in the past 50 years, runoff has actually increased.
Other studies have shown that increasing CO2 is changing how plant "por...
Plastics chemical retards growth, function of adult reproductive cells
...z said. Reductions in three key steroid hormones progesterone, testosterone and estradiol were also seen after 120 hours of exposure to BPA.
in steroid hormone production was quite dramatic. After 120 hours in a medium that included 10 micrograms per milliliter of BPA, mouse follicle cells ...
New way to make sensors that detect toxic chemicals
...vided by collaborators at the National Institute of Standards and Technology (NIST), Beach adds a layer of particles using a device called a picoliter drop
dispenser. A picoliter is a trillionth of a liter.
He describes the dispenser as a kind of inkjet printer that places a droplet of a liquid suspens...
Laboring without the labor bed: It's a good thing
...dy that re-conceptualized the hospital labour room by removing the standard, clinical bed and adding relaxation-promoting equipment had a
28 per cent drop
in infusions of artificial oxcytocin, a powerful drug used to advance slow labours.
The study, called PLACE (Pregnant and Labouring in an Ambient ...
UT multimedia program increases middle school interest in science
...identified in the study as being underrepresented in science, technology, engineering and math (STEM) courses and more likely to change their major or drop
out of school. In 2004, according to the National Center for Education Statistics, 18.3 percent of STEM degrees were awarded to Blacks, 15.9 percent w...
Researchers see evidence of memory in the songbird brain
... a new song. These mRNAs are templates that allow the cell to translate individual genes into the proteins that do the work of the cells. Any surge or drop
in the number of mRNAs in brain cells after a stimulus offers clues to how the brain is responding.
Some genes were upregulated within 30 minutes o...
Coral face 'a stormy future'
... 1980 to see what had happened to the corals in the wake of nine hurricanes, tropical storms and bleaching events.
"In every case there was a sharp drop
in coral recruitment following the event often by as much as two thirds to three quarters. Not only were fewer new coral colonies formed, but also fa...
NOAA forecast predicts large 'dead zone' for Gulf of Mexico this summer
...s in the Gulf of Mexico this summer could be one of the largest on record. The dead zone is an area in the Gulf of Mexico where seasonal oxygen levels drop
too low to support most life in bottom and near-bottom waters.
Scientists are predicting the area could measure between 7,450 and 8,456 square mile...
One of the Largest Wendy's(R) Franchisees, Tar Heel Capital, Reduces Fraud and Slashes Costs with DigitalPersona
...overrides and time clock fraud. By deploying DigitalPersona fingerprint readers, we substantially reduced theft at each location and saw an immediate drop
in food costs as a percentage of overall sales," said Rob Ireland, director of information technology for Tar Heel Capital. "DigitalPersona's fingerpr...
U-M researcher and colleagues predict large 2009 Gulf of Mexico 'dead zone'
...f the Louisiana and Texas coast when oxygen levels drop
too low to support most life in bottom and near-bo...t level since 2001 and third-lowest on record. The drop
is largely due to a regional dry spell that lasted...'s Chesapeake Bay forecast calls for a significant drop
in the extent of the dead zone, we must keep in mi...
An easy way to find a needle in a haystack by removing the haystack
...acids and other organic substances from plant or animal tissue samples. One drop
of blood -- less than one micro liter -- is sufficient to identify certain ... were able to determine a wide range of blood-specific organic acids in one drop
of human blood, smaller than a micro liter. In medical diagnostics such mea...
When palm trees gave way to spruce trees
...a much greater seasonal range in radiation for polar regions and, overall, heat was becoming more concentrated in the tropics, largely due to a global drop
in carbon dioxide levels in the atmosphere" he said.
Rising acidity levels could trigger shellfish revenue declines, job losses
...ions from human industrial activity could cause U.S. shellfish revenues to drop
significantly in the next 50 years, according to a new study by researchers...sheries revenue. The study assumed that mollusks harvests in the U.S. would drop
10 to 25 percent in 50 years' time as a result of increasing acidity levels...
Shape matters in the case of cobalt nanoparticles
...ses in a much slower fashion until the particles rearrange their magnetic moments from linear chains into small circular groups, resulting in a sudden drop
in their magnetization.
The team also showed that the cubes can be altered merely by observing with one of nanotechnologys microscopes of choice. ...
Stress puts double whammy on reproductive system, fertility
...when GnIH was first discovered."
In humans, chronic stress can lead to a drop
in sex drive as well as a drop
in fertility. Even the stress of infertility treatments can block their eff...
Protein regulates movement of mitochondria in brain cells
...t at somewhere between 2-5% oxygen. This creates a "normal" state of hypoxia in the brain.
However, the concentration of oxygen in the brain can drop
even further in instances such as a stroke, when blood flow to a portion of the brain is cut off. This decrease in oxygen promotes the expression of ...
Climate change could drive vast human migrations
... and intensity of natural hazards such as cyclones, floods and droughts. Rains in parts of Mexico and Central America, for instance, are projected to drop
as much as 50% by 2080. Farmers in parts of Mexico and north Africa's Sahel region may already be moving in part due to changing rains.
Sea level r...
USC researchers present diabetes findings at American Diabetes Association Scientific Sessions
...uidelines including how long diabetes patients should exercise, what type of exercise is most beneficial, and timing medication to avoid a precipitous drop
on blood sugar following workouts. The symposium will take place on Saturday, June 6 (Session: Fueling the Serious Athlete, Guidelines/Recommendations...
Simple drug treatment may prevent nicotine-induced SIDS: Study
...ignal the baby's lungs to become ready for air breathing."
For some months after birth, the adrenal glands act as a critical oxygen sensor. A drop
in blood oxygen levels will stimulate the release of catecholamines, which in turn signals the baby to take a deep breath, when an infant rolls on its...
Did the North Atlantic fisheries collapse due to fisheries-induced evolution?
... genetics, the authors reports steep changes in the frequency of genotypes at a single genetic locus with depth: a gradient of nearly one half percent drop
in frequency per meter. The genotypes at the locus are directly related to behavioral types that select deep vs shallow water habitat by genotype.
Microfossils challenge prevailing views of the effects of 'Snowball Earth' glaciations on life
...SB. It has long been noted that these glaciations are associated with a big drop
in the fossil diversity, suggesting a mass die-off at this time, perhaps du...ions. However, the authors of the study found evidence suggesting that this drop
in diversity occurred some 16 million or more years before the glaciations....
K-State using Second Life island to help high school students learn earth science
...s and scavenger hunts. The program is paperless. If there is an assignment students need to turn in, they can put it on a note card in Second Life and drop
it in a box, where it goes to the instructor's management system on the GeoWorld's Web site. Teachers can assess all of their student's assignments on...
Early administration of antiretroviral therapy can improve survival
...S and death than beginning treatment when levels were between 351 and 450 cells/L. The adverse effects of delaying therapy were directly linked to the drop
in the CD4 count. Waiting to treat until the CD4 count was below these levels was also associated with a higher mortality rate (13%), though the effec...
A miR boost enables acute leukemia cells to mature
... a powerful demethylating agent," Garzon says. "It shows that putting this miR back into leukemia cell lines and leukemia cells from patients causes a drop
in global DNA methylation and reactivates protective tumor suppressor genes, which allows the cells to differentiate and mature."