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right bulb gives the same warm incandescent glow you love from a fraction of the energy. But there a downside: while LEDs make cities look awesome, the most common type of LED lighting dims the ultraviolet trick
stanley uk laundry detergents use to make white clothes look whiter. The future is bright, but it also kind of dingy. There some fascinating science going on here. Many laundry detergents contain fluorescent whitening agents, or FWAs, which absorb ultraviolet light and re-emit it as a visible blue wavelength. This slightly bluish tinge helps overpower the yellowish hue of, say, a well-worn undershirt, making that nasty old rag look radiant and white. If you ;ve ever done your laundry at a blacklight rave and who hasn ;t , you ;ve seen FWAs in action: Pass the fabric softener and crank up the Sandstorm. Unfortunately, most of the commonly-available LED lighting today
borraccia stanley emits little or no light in the ultraviolet part of the spectrum. And as a research team led by Penn State Dr. Kevin Houser discovered, that m
stanley uk akes FWAs pretty much useless. In a paper published in this month LEUKOS the journal of the Illuminating Engineering Society of North America , Dr. Houser and company asked 39 non-colorblind subjects to sort five pieces of identical material based on whiteness, with each item containing a different concentration of FWAs. Under a normal halogen light, the subjects were able to order the items from dullest to brightest wit Unrs Dyson s Humidifier Uses UV Light To Kill Germs in Its Water Reservoir
breakthrough-genetic-circuits-bring-us-closer-to-synt-5933030 To create this regulatory circuit, the bioengineers combined several genes that generate particular proteins and reactions. This compoun
stanley thermo d was inserted into tiny capsules, and then implanted into obese mice. During the ensuing experiment, the mice were continually given high-fat foods. Instead of placing the mice on a diet to achieve weight loss, we kept giving the animals as much high-calorie food as they could eat, noted ETH-Zurich professor Martin Fussenegger in a statement. The implants kicked in as expected, causing the obese mice to stop their excessive eating. Their bodyweight dropped noticeably as a result. Once their blood-fat levels returned to normal, the implant stopped producing the fullness signal. As for the control group, mice that received normal animal feed with a 5% fat content did not lose any weight or reduce their intake of food. Interestingly, the sensor can detect different types of fat, including saturated and un
stanley cups saturated animal and vegetable fats 鈥?even when they ;re all ingested at the same time. But the researchers caution that this development is not easily transferable to humans and that it ;ll take several more years to develop a human-friendly version. Read the entire study at Nature: A closed-loop synthetic gene circuit for the treatment of diet-induced obesity in mice. Images: Martin
stanley shop Fussenegger/ETH Zurich/Jackson Lab
