Tag: "nitrogen" at medical news
New oxidation methods streamline synthesis of important compounds
... remove the hydrogen and replace it with oxygen or nitrogen
right where we need it for the next chemical reaction. In the June 13 issue of the Journal of the American Chemical Society, White and graduate student Kenneth J. Fraunhoffer describe the catalytic pathway they used to synthesize a derivative of t...
Organic farming can feed the world, U-M study shows
...xhaustive review of existing data about yields and nitrogen
availability was fueled in a roundabout way, when ...ing: low yields and lack of organically acceptable nitrogen
sources. Their findings refute those key arguments, Perfecto said, and confirm that organic farmi...
Once-fatal metabolic disorders treatable, says Stanford/Packard researcher
...the result is the same: escalating levels of blood nitrogen
cause irreversible brain damage, coma and death. ..., dialysis can help to cleanse the blood of excess nitrogen
during an episode and prevent brain damage. Traditional treatments included maintaining a very-low...
Difficulties of keeping the global food supply chain safe
...hasers of such imported products routinely measure nitrogen
content to estimate the amount of protein in foods, it is believed the Chinese suppliers may have added melamine to make their products appear to contain more protein. The adulteration was discovered after more than a dozen dogs and cats died after...
Eating cured meats frequently can lead to lower lung function and potential COPD
...tive," said Dr. Jiang. "Nitrates generate reactive nitrogen
species that may cause damage to the lungs, produc... certain rodent studies suggest that inhalation of nitrogen
dioxide may contribute to emphysema, no other human studies to date have examined the relationship b...
ACS News Service Weekly PressPac -- April 4, 2007
...cks for the amount of a certain isotope, or formof nitrogen
in the food. Researchers found differences in the nitrogen
isotope composition of tomatoes, lettuces and carrots grown organically and conventionally an indic...
First ozone and nitrogen dioxide measurements from MetOp-A
...ems. High levels of atmospheric pollutants such as nitrogen
dioxide produced by fossil fuel combustion, can da... Regional Nitrogen dioxide The image shows total nitrogen
dioxide in the atmosphere over Europe on 4 February 2007, as measured by the GOME-2 instrument on Me...
Probe to detect spread of breast cancer co-developed by UH scientist
...ogenic vessel on a cart and is submerged in liquid nitrogen
that cools the sensor to 77 K, equivalent to -320.5 F. The system uses custom-built electronics and software on a laptop computer to give the surgeon visual and audio feedback while tracking the magnetic nanoparticles in the body. "When breast c...
Dragon training in China focuses on atmosphere
...elivering GOME global observations of total ozone, nitrogen
dioxide and related cloud information to users via...ntify multiple trace gases including the pollutant nitrogen
dioxide created artificially by vehicle exhausts, fossil fuel burning and heavy industry. SCIAMACHY ...
Asthma linked to soot from diesel trucks in Bronx
...trations of traffic-related particulate matter and nitrogen
oxides are two to five times higher in close proximity South Bronx highways than in other parts of the South Bronx. About one-fifth of all pre-K to 8th-grade students in the South Bronx attend schools within less than two blocks of major highways. ...
The dietary history locked up in strands of hair can help diagnose eating disorders
...s Spectrometry shows that analysing the carbon and nitrogen
bound into hair fibres can determine whether a per... USA, set out to analyse the pattern of carbon and nitrogen
molecules in strands of hair. The aim was to see if this pattern varied between people with eatin...
High hourly air pollution levels more than double stroke risk
...eas in Japan. Levels of air pollutants, including nitrogen
dioxide, particulate matter, and photochemical oxidants, were monitored hourly at various sites in each of the 13 areas. When the two sets of data were put together, a pattern emerged for intracerebral haemorrhage - where a blood vessel bursts insid...
MetOp launch campaign resumed
...regat propulsion system and keeping a check on the nitrogen
gas flushing system that was needed by some of the instruments under storage conditions. The launch campaign officially resumed on 29 August and the team are back in Baikonur to carry out the pre-launch procedures. This time there are even more saf...
USC research shows dogs and smog don't mix
...is responses to the measured pollutants, including nitrogen
dioxide, ozone, particulate matter and acid vapor. There were no increases of these symptoms in children who lived in homes without pets or who lived with only cats. "Further work is needed to determine what it is about dogs that may increase an as...
UK record heatwave and rising pollution observed by eyes in the sky: Images reveal hotspots
... to record highs for the U.K. and pollution due to nitrogen
dioxide (NO2), a respiratory inhibitor, appears to...in place, which impose maximum limits on levels of nitrogen
dioxide in populated areas. Techniques and technology are progressing rapidly to allow more accurate...
UCI scientists find chlorine may contribute to ozone formation
...Chlorine atoms react rapidly with hydrocarbons and nitrogen
oxides from automobile and power plant emissions, ...ion of hydroxyl radical (OH) with hydrocarbons and nitrogen
oxides. OH is a highly reactive molecule made of oxygen and hydrogen that forms photochemically in a...
Endurance walking test distances improved significantly for COPD patients
...elium and 21 percent oxygen (Heliox21); 72 percent nitrogen
and 28 percent oxygen (Oxygen28); and 79 percent nitrogen
and 21 percent oxygen (medical air). "Patients walked significantly further while breathing Heliox ...
Commercial interests driving standards for formula milk
...nt formula protein should be based on a recognised nitrogen
conversion factor. In Bonn, however, the Internati...erived from cows' milk should be based on a larger nitrogen
conversion factor. Even though no scientific arguments were put forward to justify the federation's...
Asthmatic children in multi-family housing hit by indoor nitrogen dioxide
...ousing who are exposed to certain levels of indoor nitrogen
dioxide, a poisonous pollutant byproduct of gas st...gh, shortness of breath and chest tightness. The nitrogen
dioxide levels inside the homes investigated in the study were well below the Environmental Protecti...
Researchers link childhood asthma to exposure to traffic-related pollution
... also found that children who had higher levels of nitrogen
dioxide, or NO2, in the air around their homes wer...use asthma, and that exposure to outdoor levels of nitrogen
dioxide and other traffic-related air pollutants may be a significant risk factor for this illness."...