Tag: "seal" at biology news
Dinosaur hearing, listening to muscle noise, quieter cubicles
...to listen for them continuously off shore of a fur seal
rookery in the Bering Sea in Alaska. They detected killer whale vocalizations on 19 of 20 days during last summer. Most of the vocalizations occurred from twilight to mid-morning. The fewest sounds occurred between the early evening and midnight. F...
Female Antarctic seals give cold shoulder to local males
... Commenting on the practical implications for fur seal
populations, Dr Hoffman said, "Antarctic fur seals...erve will impact upon the genetic diversity of fur seal
populations and may have helped them recover so successfully from near extinction only 100 years ago...
...l how the roving cells whose job is to digest bone seal
off their work area as they get down to business. The cells, called osteoclasts, have some unique features not seen in any other cell type. Osteoclasts move around the bone until they reach a site where they sense that their services are required, a...
Robotic whiskers can sense three-dimensional environment
... and direction of the flow of a fluid, much like a seal
tracks the wake of prey. ...
Seals protect brain, conserve oxygen by turning off shivering response on icy dives
...finding that researchers believe allows the diving seal
to conserve oxygen and minimize brain damage that ...und. By shutting down the shivering response, a seal
allows its body temperature to drop and achieves the benefits of hypothermia: a slower metabolism an...
Biofuel cells without the bio cells
...to the device. In purified protein fuel cells, the seal
made by the protein coating on the electrode effectively acts in place of the membrane. ...
University of Minnesota researchers take new look at cellular suicide
...e the proteins can gang up on the DNA molecule and seal
the cell's fate. The researchers describe their discovery in the July 7 issue of Archives of Internal Medicine. The self-killing of cells is termed apoptosis, and its purposes include not only culling damaged cells but shaping an embryo by getting r...
Honey helps problem wounds
...dihoney in treating wounds. Medihoney bears the CE seal
for medical products; its quality is regularly tested. The success is astonishing: 'Dead tissue is rejected faster, and the wounds heals more rapidly,' Kai Sofka, wound specialist at the University Children's Clinic, emphasises. 'What is more, changi...
Alaska seal pup diet may hold key to decline of population
Female harbor seal
pups whose blubber falls below average levels may ...at fat consumption plays in the life of the harbor seal
and could tie the declining population of seals and other marine mammals with the change in availabi...
High-tech tags on marine animals yield valuable data for biologists and oceanographers
...em. They can be fixed harmlessly onto the fur of a seal
or sea lion, and will stay on for several months b...s," he said. Researchers can use these Antarctic seal
species to obtain oceanographic data for a region of the ocean and times of the year for which there...
Cellular scale drug delivery from the inside out
...illed, the ends of channels are "capped" to safely seal
the drug inside. Once the caps are in place, the nanospheres are "washed" to remove the drug from the outer surface. The type of material used for the end caps, how they're held in place, and how they're released is the focus of Lin's work. The caps...
Seal rookeries could provide a reliable food source for endangered California condors, study finds
...ornia condors raised in captivity be released near seal
and sea lion rookeries so that the birds can once ...industries started around that time, and the large seal
rookeries and whale carcasses quickly disappeared. So the condors were once again stuck without a fo...
MIT engineers an anti-cancer smart bomb
...magine a cancer drug that can burrow into a tumor, seal
the exits and detonate a lethal dose of anti-cancer toxins, all while leaving healthy cells unscathed. MIT researchers have designed a nanoparticle to do just that. The dual-chamber, double-acting, drug-packing "nanocell" proved effective and safe,...
Elephant seal pups suffer from ocean warming
...ated with a 28% decrease in the weight of elephant seal
pups. Elephant seals are shown to be sensitive to ...aters get warmer the average weight of an elephant seal
pup decreases. Weaning weights are a direct indicator of food availability to mother seals during th...
Marburg haemorrhagic fever in Angola update
... work to interrupt chains of transmission and thus seal
off opportunities for further spread. Such straightforward measures are complicated by the distinct features of this disease. The sudden onset, dramatic symptoms, and rapid deterioration of patients, and the absence of a vaccine and effective treatm...