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Tag: "jet" at biology news

Researchers design pulsed mircrojet system to deliver protein drugs without pain or bruising

...e pain and bruising caused by previously-developed jet injectors was caused by the deep penetration of je... (more than 100 meters per second) with very small jet diameters (between 50 and 100 micrometers), delivering only 2 to 15 nanoliters of liquid drug at a t...

Gene that makes people 'early to bed and early to rise' demystified

...clock in those suffering from conditions including jet lag or shift work sleep disorder, according to the...ines, the researchers said. Someday "people with jet lag or shift work--some of the most common of sleep disorders--might take a pill and be back to norm...

Cellulose nanocrystal research could lead to new vaccines, computer inks

...esearch deals with cellulose drug delivery and ink jet printing. Roman experimented with taking cellul... rheumatoid arthritis, and certain cancers. Ink jet printing was another research project for Roman. She experimented with using ink jet printers to dep...

Chronic jet-lag conditions hasten death in aged mice

...ifts--similar to those that humans experience with jet lag or rotating shift work--experienced significan...rchers were led to examine a possible link between jet lag and mortality by something they had noticed in an earlier, unrelated study: A surprising fractio...

Negative effects of caffeine are stronger on daytime sleep than on nocturnal sleep

...nteract sleepiness generated by sleep deprivation, jet lag, and shift-work. However, this habit may have important effects when you then try to recuperate during daytime." Thirty-four moderate caffeine consumers participated in both caffeine (200 mg) and placebo (lactose) conditions in a double-blind c...

Squid-inspired design could mean better handling of underwater vehicles

...may soon allow doctors to guide tiny capsules with jet thrusters through the human digestive tract, enabling them to diagnose disease and dispense medications. Kamran Mohseni, an assistant professor of aerospace engineering sciences, will present these and other details at the American Geophysical Uni...

Dragonfly's metabolic disease provides clues about human obesity

... and high-performance flight. "These guys are the jet fighters of the insect world," said Marden. Flight muscle makes up 60 percent of their body mass. The large variation in muscle output was intriguing because natural selection, over time, would weed out the submissive, poor flyers if the trait were...

Melatonin improves mood in winter depression

... study, they concluded that, similar to persistent jet lag, circadian misalignment is a major part of SAD. Most patients, typically phase-delayed types or "night owls," have misalignment that responded best to taking low-dose melatonin in the afternoon or evening. A longer-than-expected subgroup of SAD...

Purdue creates new low-cost system to detect bacteria

...d measuring the size and speed of fuel droplets in jet engines. "We adapted some ideas from that research to build a scatterometer for food safety, and now we're using the second generation of that instrument," Hirleman said. A major motivation for the research is to reduce the time it takes for indu...

New fruit fly protein illuminates circadian response to light

...in response to light. The human condition known as jet lag takes place during the period when the body is attempting to resynchronize to the environmental light changes brought on by travel, namely from one time zone to another. A mutant fruit fly that possesses jetlag-like behaviors enabled senior auth...

More evidence mammals, fruit flies share make-up on function of biological clocks

... the biological clock with changing seasons, or in jet lag-style experiments (in which light is manipulated to mimic the experience of traveling over multiple time zones) in the lab. In mammals, however, Cry assists in the 24-hour rhythmic expression of clock genes and has nothing to do with re-setting t...

Some like it hot: Worms at deep-sea vents favor a fiery 45-55°C

...es, water will not boil, so deep-sea thermal vents jet out water that remains liquid at temperatures of up to 350 degrees Celsius (662 degrees Fahrenheit). Because the surrounding seawater is barely above freezing, a steep and variable temperature gradient exists around the thermal vents, making it diffi...

Unique equine cataract surgery offered on routine basis

... the cataract via the anterior eye chamber using a jet of saline. The teams remove the lens using an ultrasound probe and administered an injection of intravitreal steroids to control postoperative inflammation of the eye. Professor Knottenbelt said: "This new surgery shows how effectively the lates...

Travelers can avoid jet lag by resetting their body clocks

...ounter drug melatonin -- allows travelers to avoid jet lag by resetting their circadian body clock before...r to a new time zone following rapid transmeridian jet travel. Melatonin alone has been shown to synchronize the circadian clock of the blind to the 24-ho...

Sensor web simulation investigates technique to improve prediction of pollution across the globe

...ce to roughly the cruising altitude of a passenger jet - about 40,000 feet. In some cases air pollutants have natural causes such as lightning induced wildfires that can emit large plumes of particulates into the troposphere. Fossil fuel burning in industrial areas and vehicular traffic in metropolitan a...

New understanding of jet lag

...t in part, why transmeridian travelers suffer from jet lag, the malaise experienced after crossing severa...re quickly move back into harmony. The symptoms of jet lag would then be reduced or eliminated. "The key here is, we now know what the 'rubber band' is: t...

UF researchers kill resistant bugs one bandage at a time

...t it from infections. Bacteria in a wound "is like jet fuel for these bugs," Schultz said. "Gauze is still the most commonly used dressing for wounds," he said. "But the problem with gauze is when it absorbs fluid, it forms a great avenue for bacteria and fungus to grow. This treatment actually makes th...

The circadian clock: Understanding nature's timepiece

...that could reset your circadian clock to eliminate jet lag, but this new perspective in how the cells are organized definitely improves our understanding." For every hour of time change a person experiences it takes about a day to fully adjust. Workers on rotating shifts are constantly struggling to ada...

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