Over the last few years, the use of nanomaterials for water treatment, food packaging, pesticides, cosmetics and other industries has increased. A growing concern is that these particles could pose a potential health risk has prompted a large number of studies, including recent work at the Univ. of Missouri that showed the retention of silver nanoparticles in pear skin, even after repeated washing.
An international team of researchers have recently showed that water purification membranes enhanced by plasma-treated carbon nanotubes are ideal for removing contaminants and brine from water. The study may lead to the next generation of portable water purification devices, which could be rechargeable and the size of a teapot.
Carbon monoxide poisoning is a significant problem for construction workers because it can build up quickly in enclosed spaces from use of gasoline-powered tools. New research calls for the use of a wearable computing system installed in a helmet to protect construction workers from this type of poisoning.
For decades, teams of Berkeley Lab scientists have investigated the ways that indoor air quality affects human health. In Berkeley Lab's test kitchen scientist Brett Singer and his team are measuring the pollutants emitted by cooking foods and evaluating how effective various range hoods are in capturing the pollutants.
China and Russia have halted imports of some New Zealand dairy products in response to a botulism scare, according to New Zealand government officials. New Zealand dairy giant Fonterra announced Saturday that up to 1,000 tons of infant formula, sports drinks and other products sold in seven countries could be tainted after tests turned up bacteria in whey protein that could cause botulism.
A study at the Univ. of Utah finds that more than 60% of antibiotic prescriptions are for types that kill multiple kinds of bacteria. Unfortunately, in more than 25% of cases such prescriptions are useless because the infection stems from a virus, which cannot be treated with antibiotics. This overuse of antibiotics has a number of downsides.
In an epidemic or a bioterrorist attack, the response of government officials could range from a drastic restriction of mobility to moderate travel restrictions in some areas or simple suggestions that people remain at home. Deciding to institute any measure would require officials to weigh the costs and benefits of action, but at present there’s little data to guide them. However, a new study comparing contagion rates may come in handy.
As many as 10% of combat wounds result in life threatening infections that ultimately lead to septicemia and/or sepsis. Battelle, in partnership with NxStage Medical Inc. and Aethlon Medical, has won a nearly $23 million contract from DARPA to develop a new medical device that would holistically treat for sepsis by removing blood and cleaning it in a manner similar to dialysis.
Rice Univ. nanotechnology researchers have unveiled a solar-powered sterilization system that could be a boon for more than 2.5 billion people who lack adequate sanitation. The “solar steam” sterilization system uses nanomaterials to convert as much as 80% of the energy in sunlight into germ-killing heat.
A family of molecules developed at Carnegie Mellon Univ. to break down pollutants in water is one step closer to commercial use. Recently published study results show that the molecules, which are aimed at removing hazardous endocrine disruptors from water sources, aren't endocrine disruptors themselves. They proved to be non-toxic to developing zebrafish embryos.
GOJO Industries, a maker of hand hygiene and skin health and inventors of Purell Hand Sanitizer, conducted an independent research study at the John Peter Smith Hospital in Fort Worth, Texas to determine the impact on hand hygiene compliance rates when the hospital hand hygiene program included an electronic compliance activity monitoring system. The research showed a 92% hand hygiene improvement.
Despite warnings to the contrary, many people continue to operate portable generators indoors or close to open windows, resulting in more than 500 deaths since 2005. And each year, more than 20,000 people visit the emergency room and more than 4,000 are hospitalized due to exposure to toxic levels of carbon monoxide. A new computer modeling study scrutinizes the deadly relationship between carbon monoxide emissions and occupant exposure.
A new study links heavy air pollution from coal burning to shorter lives in northern China. Researchers estimate that the half-billion people alive there in the 1990s will live an average of 5½ years less than their southern counterparts because they breathed dirtier air.
On Monday, the National Academy of Sciences announced a three-year grant to chemist Vincent Rotello at the University of Massachusetts Amherst to develop, test and deploy new, sensitive, reliable and affordable inkjet-printed, nanoparticle-based test strips for detecting disease-causing bacteria in drinking water.
Hospitals have fretted for years over how to make sure doctors, nurses and staff keep their hands clean, but with only limited success. Now, some are turning to technology—beepers, buzzers, lights and tracking systems that remind workers to sanitize, and chart those who don't.
Following a meeting between top scientists, Chicago Mayor Rahm Emanuel, and Israeli President Shimon Peres, the University of Chicago and Ben-Gurion University of the Negev announced they will begin funding a series of ambitious research collaborations that will apply nanotechnology to make clean, fresh drinking water more plentiful and less expensive by 2020.
Technology exists for removing heavy metals from drinking water, but often is too costly in developing countries. Scientists are now reporting the development of an inexpensive new material made of clay and papaya seeds removes harmful metals from water and could lower the cost of providing clean water to millions of people in the developing world.
Are teeth the latest victims of bisphenol A (BPA)? Yes, according to the conclusions of a team lead by researchers in France. They have shown that the teeth of rats treated with low daily doses of BPA could be damaged the chemical.
Using the same devious mechanism that enables some bacteria to shrug off powerful antibiotics, scientists in Ohio have developed solar-powered nanofilters that remove antibiotics from the water in lakes and rivers twice as efficiently as the best existing technology. They say their “vesicle”-like technology is an improvement on existing activated carbon filters.
The European Union is urging its 27 member states to test certain wheat shipments from the United States after unauthorized genetically modified grains were found on a U.S. farm, officials said Friday. The move came after Japan halted imports Thursday of some types of wheat from the U.S. following the discovery of an experimental strain that was tested by Monsanto but was never approved.
Amid concerns over the potential health effects of existing flame retardants for home furniture, fabrics and other material, are reporting development of an “exceptionally” effective new retardant that appears safer and more environmentally friendly. The key is a nanocoating made with a relatively benign polymer that creates a “gas blanket,” preventing oxygen from fueling a fire.
Researchers have cautioned that more work is needed to understand how microorganisms respond to the disinfecting properties of silver nanoparticles, increasingly used in consumer goods and for medical and environmental applications. Although nanosilver has effective antimicrobial properties against certain pathogens, overexposure to silver nanoparticles can cause other potentially harmful organisms to rapidly adapt and flourish.
For the first time, researchers from institutions around the country have conducted an identical series of toxicology tests evaluating lung-related health impacts associated with widely used engineered nanomaterials (ENMs). The study provides comparable health risk data from multiple laboratories, which should help regulators develop policies to protect workers and consumers who come into contact with ENMs.
Asbestos was banned in the many industrialized countries in the 1980s, but the threat lingers on in the ceilings, walls and floors of old buildings and homes. Now a team of researchers in the U.K. has developed and tested the first portable, real-time airborne asbestos detector. The device uses a laser-based light scattering technique to identify harmful fibers.
Long-term exposure to air pollution may be linked to heart attacks and strokes by speeding up atherosclerosis, or "hardening of the arteries," according to a University of Michigan public health researcher and colleagues from across the U.S.