Suction in Biological News

Eat less or exercise more? Either way leads to more youthful hearts

... indicator of heart health. "During filling, the left ventricle is a suction pump," Kovcs explains. "Think of the rubber bulb of an old-fashioned ... pressure gradient, indicating that their left ventricles had better suction ability. The study participants were nonsmokers between ages 50 and 60 ...

'Alien' jaws help moray eels feed

... mouth open or grabbing it in their jaws, but most of those fish then use suction to move the food from the mouth to the esophagus. But moray eels have little ability to generate suction through their mouths, Mehta found. Instead, they first grasp food with ...

DOE-funded research projects win 46 R&D 100 Awards for 2009

... KY) Thief Process for the Removal of Mercury from Flue Gas - Partially burned coal is extracted from a pulverized coal-fired combustor using a suction pipe, or "thief," and injected into the downstream flue gas to absorb mercury. (Jointly with Nalco-Mobotec, Orinda, CA) Virtual Engineering ...

Engineer devises ways to improve gas mileage

... jet or oscillatory jet actuators which are embedded in the surface of the body (an airplane wing for example), and essentially perform injection and suction of the fluid from the surface in a periodic manner," said Agarwal. He has demonstrated that the transonic drag of an airplane wing can be reduced by ...

A BBVA Foundation project comes up with a system enabling detection of cetacean hearing loss

... the top of the skull. When an animal hears a sound, its brain registers this vibration through an electrical impulse that can be detected with simple suction cup electrodes. These electrical pulses are called auditory evoked potentials or auditory brainstem responses (ABR), and incorporate a short latency ...

Aphids are sentinels of climate change

... to damage." Scientists at Rothamsted Research have been monitoring the flying form of all aphid species for 42 years. They use a network of 16 suction traps (12 in England and 4 in Scotland), placed at various sites, to collect a representative sample of all flying insects. The long term data on ...

Ancient amphibians evolved a bite before migrating to dry land

... ancestors, we were able to determine whether the fossil species fed by suction or by biting." Using this approach, Markey and Marshall found that in ... reproduction, sensation, and feeding," Markey says. "In water, suction is an efficient method of feeding, but it does not work in the much less ...

From the deep -- Researchers find new species of sea anemone

... equipment like underwater video cameras attached to remotely operated vehicles (ROVs). Deep sea ROVs are also equipped with robotic arms and suction devices that are used to collect species. "It's like a submarine that's manned from the surface," said Daly, who plans to head to Monterey ...

Ecologists home in on how sperm whales find their prey

... Woods Hole Oceanographic Institution and the University of St Andrews attached acoustic recording tags to the dorsal surface of sperm whales with suction cups. The whales were then tracked acoustically with a towed hydrophone array. The researchers used the tags to record the sounds that sperm ...

For one Stanford doctor, the beat goes on during open-heart surgery

... ability to stitch vessels onto a moving, blood-filled heart replaces the need for the heart-lung machine. A stabilizer, a small device with a suction cup attached, is used to minimize the motion of the heart where the stitching is done. The hesitancy of most surgeons to switch to beating-heart ...

Stress substantially slows human body's ability to heal

... 24-hour-long visits. The visits were separated by a two-month interval. During each visit, both the husband and wife were fitted with a small suction device which created eight tiny uniform blisters on their arms. The skin was removed from each blister and another device placed directly over each ...

Changes to embryos can elicit change in adult fish

... One species had force modified jaws that are more adept at biting prey; the other had speed modified jaws, which are more accomplished at using suction to feed on plankton. Each jaw system is essentially a lever system made up of one out-lever and two in-levers. "We found that as the closing ...

Sleeping Sickness Epidemic Spreading in Uganda

... In all of these cases, the standard treatment is a surgical procedure known as vacuum aspiration. In this procedure, the cervix is dilated, and a suction device is used to remove the uterine contents. As an alternative, women and their doctors may choose to wait for the uterus to expel the tissue ...

Drug Offers Alternative to Surgical Treatment After Miscarriage

... In all of these cases, the standard treatment is a surgical procedure known as vacuum aspiration. In this procedure, the cervix is dilated, and a suction device is used to remove the uterine contents. As an alternative, women and their doctors may choose to wait for the uterus to expel the tissue ...