The research appears online this month in the American Chemical Society journal Nano Letters. The ribbons created at Rice are thousands of times thinner than a sheet of paper yet have potential that far outweighs current materials for their ability to charge
Ajayan is the Benjamin M. and Mary Greenwood Anderson Professor in Engineering and a professor of mechanical engineering and materials science chemistry and chemical and biomolecular engineering.
It is documented well that corn residues introduce a host of physical chemical and biological effects that negatively influence corn yields.
Effects of accumulated corn residues include reduced soil temperature increased soil moisture reduced N fertilizer availability and production of autotoxic chemicals all of
Now however U s. Department of agriculture (USDA) and cooperating scientists are evaluating new ways to control G. pallida using naturally occurring chemicals called egg-hatching factors.
According to lead scientist Roy Navarre with USDA's Agricultural research service (ARS) the egg-hatching factors are exuded actually chemicals from the roots of potato and certain other solanaceous plants into surrounding soil.
There the chemicals stimulate G. pallida eggs to hatch Normally this helps ensure the survival of emerging juvenile nematodes.
But Navarre's approach calls for using the chemicals to trick the eggs into hatching
whose roots exude the chemicals but don't support the nematode's reproduction. Story Source: The above story is provided based on materials by United states Department of agriculture-Research Education and Economics.
The data also indicate that tobacco smoke chemicals may influence Vitamin d metabolism and function while Vitamin d may conversely modify the carcinogenicity of tobacco smoke chemicals.
If further research confirms this it would be consistent with previous studies demonstrating the anti-tumorigenic effects of Vitamin d derivatives as well as the correlation of Vitamin d deficiency with favorable cancer-forming conditions and increased susceptibility to tobacco smoke carcinogens.
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
Caffeine is a defence chemical in plants and tastes bitter to many insects including bees
and greater chemical specificity and resolution than they had seen before. An Explosion In demand for Quick Samplingnrel had partnered previously with scientists from Oak ridge National Laboratory the University of Florida
and Oak ridge National Laboratory Spectrometer Reads the Chemical Fingerprints of the Samplesthe spectrometer's readings are translated into graphs that show single peaks that are easily identifiable phenotypes from
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
It appears in ACS'journal Chemical Research in Toxicology. Chiara Dall'Asta and colleagues explain that molds growing naturally on wheat corn
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
Although the yield of aromatic rice is lower the farmers will not need to spend much money on applying chemicals that could pollute the environment and harm their own health.#
The researchers'results reported this month in the American Chemical Society journal Environmental science and Technology are the latest in a long effort to understand the environmental aspects of antibiotic resistance which threatens decades of progress in fighting disease.
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
For example plants produce a plethora of chemicals that taste bad or serve as a poison to herbivores.
These chemicals are effective in deterring the feeding of most general insect herbivores. A well-studied practice by some specialist insects is their predilection to consume these plant poisons sequester those poisons into parts of their body then exploit the poisons for their own protection.
and analysed the chemical states of their metallic elements. Zinc was shown to dissolve and accumulate throughout the plants
and pods was in the same chemical state as in the nanoparticles. However part of the cerium had changed its oxidation state from Ce (IV) to Ce (III) which can alter the chemical reactivity of the nanoparticles.
COPS are a group of chemicals with diverse characteristics which are present in pesticides industrial waste and building materials.
and chemicals produced by the insects themselves. The findings published online this week in Proceedings of the National Academy of Sciences show that grooming helps insects maintain acute olfactory senses that are responsible for a host of functions including finding food sensing danger and even
which chemicals travel to reach sensory receptors for olfaction. Cockroaches clean their antennae by using forelegs to place the antennae in their mouths;
and nonvolatile chemicals accumulated on the ungroomed antennae of cockroaches but most surprising was the accumulation of a great deal of cuticular hydrocarbons--fatty candlewax-like substances secreted by the roaches to protect them against water loss.
and polycyclic aromatic hydrocarbons (chemicals formed when meat is cooked at high temperatures) aldehyde (an organic compound found in perfume)
and acrolein (a chemical found in herbicides). These toxic compounds are increased with reuse of oil and increased length of frying time.
and more effective toxicity tests for airborne chemicals scientists from Rice university and the Rice spinoff company Nano3d Biosciences have used magnetic levitation to grow some of the most realistic lung tissue ever produced in a laboratory.
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
Wusirika thinks the rice callus culture may be attacking cancer with the same sort of plant chemicals that make vegetables so healthy to eat.
when it comes to combating global warming caused by emissions of ozone-forming chemicals location matters.
Scientists and policy analysts are interested in learning how curbing the emissions of these chemicals can improve human health
The chemicals which are produced from sources such as planes factories and automobiles are converted to ozone in the presence of sunlight
Among these chemicals are nitrogen dioxide carbon monoxide and non-methane hydrocarbons. By combining satellite observations of how much heat ozone absorbs in Earth's atmosphere with a model of how chemicals are transported in the atmosphere the researchers discovered significant regional variability--in some places by more than a factor of 10--in how efficiently ozone trapped heat
in Earth's atmosphere depending upon where the ozone-forming chemical emissions were located. This variability was found within individual continents and even among different regions with similar emission levels within individual countries.
Variations in chemicals that lead to the production of ozone are driven by industry and human population.
when to secrete specific chemicals when to divide and when to spread. They hypothesized that disrupting this system would leave the parasites incapable of growing
It has developed resistance to against more than 50 insecticides including DDT Bt toxins among others making the use of chemicals as a control measurement become ineffective.
and it may play an important role in the development of its ability to detoxify a wide range of chemicals.
Remarkably it appears that the very genetic adaptations that allow DBM to detoxify the chemicals in its food plants
We finally have a nanotube fiber with properties that don't exist in any other material said lead researcher Matteo Pasquali professor of chemical and biomolecular engineering and chemistry at Rice.
Microbes can then be used to produce various chemicals such as bioethanol from the sugars. Lignocellulosic biomass contains substantial amounts of lignin
#Chemical derived from broccoli sprouts shows promise in treating autismresults of a small clinical trial suggest that a chemical derived from broccoli sprouts
In addition the chemical later turned out to improve the body's heat-shock response--a cascade of events used to protect cells from the stress caused by high temperatures including those experienced
Talalay notes that the scores of those who took sulforaphane trended back toward their original values after they stopped taking the chemical just like
because bacteria-based biofertilizers constitute an alternative to conventional chemical fertilizers that are expensive and less sustainable from the environmental point of view.
Conventional chemical fertilizers however supply the soil with chemical elements which despite functioning as a fertilizer can end up contaminating aquifers
#U s. releases 13th Report on Carcinogensfour substances have been added in the U s. Department of health and human services 13th Report on Carcinogens a science-based document that identifies chemical biological and physical agents that are considered cancer hazards for people living
Ortho-toluidine used to make rubber chemicals pesticides and dyes has been reevaluated and is listed now as a known human carcinogen.
Ortho-toluidine is a synthetic chemical produced in other countries and imported into the United states by several companies in high volumes.
It is used primarily to make rubber chemicals pesticides and dyes. It is used also in some consumer and medical products.
Pentachlorophenol and by-products of its synthesis are complex mixtures of chemicals used as wood preservatives.
#Goats better than chemicals for curbing invasive marsh grassherbivores not herbicides may be the most effective way to combat the spread of one of the most invasive plants now threatening East Coast salt marshes a new Duke university-led
For more than two decades we've declared major chemical and physical warfare on this grass using all the latest humanmade weapons Silliman said.
These insects can teach us humans a lot about an important chemical concept the idea that a compound
CLARS provides a way to test this by mapping chemicals in the air over Los angeles. The methods we're testing today can ultimately fill a critical need for decision makers to determine
#Graphene imperfections key to creating hypersensitive electronic noseresearchers have discovered a way to create a highly sensitive chemical sensor based on the crystalline flaws in graphene sheets.
The technology was introduced this month in the American Chemical Society journal Applied materials and Interfaces. The material is made of graphene nanoribbons atom-thick strips of carbon created by splitting nanotubes a process also invented by the Tour lab
and reduce the usage of chemicals at the same time. Watch video: http://www. youris. com/Bioeconomy/BIOECONOMY-TV/Reducing-Pesticides-And-Boosting-Harvests. kl#ixzz3dugjrct2story Source:
Pasquali is chair of the Department of chemistry and a professor of chemical and biomolecular engineering of materials science and nanoengineering and of chemistry.
and chemicals deep into underground rock formations are the subject of new research that synthesizes 165 academic studies and government databases.
Gas and chemicals from humanmade fractures thousands of meters underground very rarely seep upward to drinking-water aquifers the study says.
or sent to municipal water-treatment plants not equipped to handle the chemicals involved. All bad ideas according to the authors of the new survey who work at Duke university MIT Ohio State university Newcastle University Los alamos National Laboratory the National Oceanic and Atmospheric administration and Stanford.
the only options for control of the pest farmers have had are highly toxic chemicals many of them severely restricted.
therefore a biological pest control was achieved the use of chemicals ceased and agriculture on the region improved.
In a paper in the American Chemical Society journal Nano Letters the Rice team analyzed the properties of elemental bonds between semiconducting phosphorus atoms in 2-D sheets.
when nitrogen oxides carbon monoxide and volatile organic compounds react with sunlight after the chemicals'release from vehicles industry or burning of wood or other plant or animal matter.
To return to an integrated approach to managing all pests in the crops affected by H. halys growers require a more sustainable strategy for chemical control that combines efficient use of insecticides with a better understanding of its biology and behavior according to the authors.
The work reported this month in the Journal of the American Chemical Society (JACS) focused on a tetracycline discovered in 2008 by scientists who isolated small amounts from penicillium fungi.
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
However the statement stresses that clinicians be educated so they can inform patients that e-cigarettes are unregulated may contain low levels of toxic chemicals
Nicotine is a dangerous and highly addictive chemical no matter what form it takes--conventional cigarettes
It might have been the noise of the spray that stopped them and not the chemical. Mcglone asked Sergeant's to make several spray cans that had the androstenone in different concentrations
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
Continual warming of the leading edge of the fire is a necessary precondition to releasing the chemicals in the fuels that are needed to sustain it.
and a production process using various toxic chemicals. As well as providing significant environmental benefits by reducing reliance on fossil fuels a successful digestate-ash fertilizer would also reduce costs
Their report will be part of the 248th National Meeting & Exposition of the American Chemical Society (ACS.
The above story is provided based on materials by American Chemical Society (ACS. Note: Materials may be edited for content and length h
and other toxic chemicals such as PCBS found in wildlife and in Inuit and other aboriginal and non-aboriginal Northerners dependent on hunting Morris said.
For example if conditions do not induce diseases growers sprayed unnecessarily wasting chemicals and labor and increasing production costs.
and military troops exposed to poisonous chemicals--particularly those in pesticides and chemical weapons. An article in the current issue of the journal Chembiochem outlines the advancement in detoxifying organophosphates
The patent-pending process was developed by NYU School of engineering Associate professor of Chemical and Biological Engineering Jin Kim Montclare along with Richard Bonneau an associate professor in NYU's Department of biology and a member of the computer science faculty
which have the unique capability of degrading chemicals in a class known as organophosphates which are found in everything from industrial pesticides to the sarin gas used in chemical warfare.
It never ceases to amaze me that these sensitive chemical signatures of changing human life survive in the archaeological record for thousands of years.
The use of clothianidin one of the chemicals studied on corn in Iowa alone has doubled almost between 2011 and 2013.
and the chemicals were found in all nine rivers and streams. Of the three most often found chemicals clothianidin was the most commonly detected showing up in 75 percent of the sites and at the highest concentration.
Thiamethoxam was found at 47 percent of the sites and imidacloprid was found at 23 percent.
One of the chemicals imidacloprid is known to be toxic to aquatic organisms at 10-100 nanograms per liter
the nicotine levels carcinogens and chemical additive levels are unknown. The FDA recently proposed a new rule to extend their regulatory authority to cover alternative tobacco products including e-cigarettes cigars pipe tobacco and hookah tobacco.
Further researchthe fast growing field of electronics and optoelectronics demands precise material deposition with application-specific optical electrical chemical and mechanical properties.
and now widely banned pesticides and other toxic chemicals--called legacy contaminants--can become magnified in an animal that eats contaminated food.
Evolving a Taste for Toxinsmany plants produce toxic chemicals which they use as a defense against herbivores or plant-eating animals.
their bodies must handle up to hundreds of toxic chemicals from the plants they consume each day.
or chemicals that tell others of their species to come closer. Scientists could potentially use the substances to lure brown marmorated stink bugs to a specific spot
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
As a result the harvested portion of the plant will often contain lower concentrations of other nutrients including health-promoting antioxidants Without the synthetic chemical pesticides applied on conventional crops organic plants also tend to produce more phenols
In a new paper available online in the American Chemical Society journal Nano Letters a Rice team led by chemist James Tour compared its RRAM technology to more than a dozen competing versions.
and Edwin Thomas the William and Stephanie Sick Dean of Rice's George R. Brown School of engineering professor in mechanical engineering and materials science and in chemical and biomolecular engineering.
Although pesticide exposure has been implicated as a possible cause for bee decline until now we had limited understanding of the risk these chemicals pose especially how it affects natural foraging behaviour Raine said.
Gradual degeneration of these cells causes a reduction in a vital chemical neurotransmitter dopamine. The decrease in dopamine results in one or more of the classic signs of Parkinson's disease that includes:
and 35 percent said they thought that fruit used to flavor the tobacco detoxify tobacco's harmful chemicals.
but have lost their ability to produce certain defense chemicals making them vulnerable to attack by insects and pathogens.
Swiss scientists are exploring ways to help protect 21st century maize by rearming it with its ancestral chemical weapons.
The researchers led by Dr Ted Turlings (University of Neuchã¢tel Switzerland) found that many varieties of modern maize have lost their ability to produce a chemical called E-Î-caryophyllene.
This chemical is produced normally by traditional ancestors of modern maize roots when the plant is under attack from invading corn rootworms.
The chemical attracts'friendly'nematode worms from the surrounding soil which in turn kill the corn rootworm larvae within a few days.
One of the types of toxins that maize plants produce against their enemies is a class of chemicals called benzoxazinoids.
The researchers used stable isotope analysis a chemical assay of a tissue biopsy that provides an integrative view of what the animal ate in previous months.
The beads are washed then with a strong chemical that causes the allergy-inducing protein to dissociate from the patient's Ige antibodies.
and research team at Clemson that studies how the chemical and biological interactions that take place in the plant-soil interface shape plant communities.
but Rice scientists have now found a chemical-free way to unzip them. The Rice lab of materials scientist Pulickel Ajayan discovered that nanotubes that hit a target end first turn into mostly ragged clumps of atoms.
The Rice researchers led by graduate student Sehmus Ozden reported their finding in the American Chemical Society journal Nano Letters.
Tumor cells move up a gradient based on the presence of a chemical or chemoattractant--this process is called haptotaxis.
Within healthy nerve pathways each nerve cell sends an electric pulse down itself until it reaches a synapse where it triggers the release of chemicals called neurotransmitters that float across the gap
In addition AÎ triggers immune inflammatory responses like an infection bringing an on a rush of chemicals
and prenatal exposure to agricultural chemicals in California said lead study author Janie F. Shelton a UC Davis graduate student who now consults with the United nations
Women who are pregnant should take special care to avoid contact with agricultural chemicals whenever possible.
The addresses then were overlaid on maps with the locations of agricultural chemical application sites based on the pesticide-use reports to determine residential proximity.
which participants were exposed to which agricultural chemicals. We mapped where our study participants'lived during pregnancy and around the time of birth.
In that early developmental gestational period the brain is developing synapses the spaces between neurons where electrical impulses are turned into neurotransmitting chemicals that leap from one neuron to another to pass messages along.
Our bacteria produce a volatile chemical that's dispersed through the air and tremendously inhibits the growth of fungal and bacterial pathogens Cornelison said.
When Ruby died suddenly in April from apparently ingesting rat poison it was a local tragedy as well as a national warning about the serious dangers these chemicals pose to wildlife.
Most of the work was centered on urushiol the rash-causing chemical found in the plant's oils.
We have to keep in mind that the chemicals used to control poison ivy are general herbicides meaning that they will affect
This work shows promise for an alternative approach to the use of chemicals and has great potential as a biological control alternative.
Micronutrients are chemicals including vitamins and minerals that our bodies require in very small quantities.
since selenium is required a chemical in the production of thyroid hormone. Warkentin concludes Increased production and consumption of grain legume crops should be encouraged by agriculturalists and dietitians around the world.
and differences in sensitivity were found between chemicals species and life stages tested. Overall clams were more susceptible to mosquito control pesticides than oysters.
Naled an organophosphate chemical was the most toxic compound in oyster larvae while resmethrin was the most toxic compound in clam larvae.
and other chemicals to form various acidic compounds. The result is a mild solution of sulfuric acid and nitric acid.
The situation is particularly severe in new member states where the use of agri-chemicals such as fertilizers has grown rapidly.
#Chemicals found that treat citrus greening in the laba University of Florida research team is cautiously optimistic after finding a possible treatment in the lab for citrus greening a disease devastating Floridaâ##s $9 billion
In addition a full understanding of the polysaccharides and other compounds made available during pretreatment may mean other valuable co-products like platform chemicals may be produced viably from the surplus straw.
The research by Rice chemist Ed Billups and his colleagues appears in the American Chemical Society's Journal of Physical chemistry Letters.
which helped researchers estimate the clearance of the tobacco-related chemicals of interest. The study participants spent on average 74 minutes smoking water pipes
By performing experiments in the precisely controlled environment of the CLOUD CHAMBER the project's scientists can change the concentrations of chemicals involved in nucleation
It is an affordable non-chemical means of taking genetically modified crops to harvest maturity without getting any kind of pollen or seed into the ecosystem.
When a river system gets totally overwhelmed You lose the chemical functions the chemical buffering said Cardenas.
and chemicals and mechanical means are expensive and ineffective too. Using a hatchet that is designed to pump fungal spores into the trees the researchers tested the fungus on 14 tree-of-heaven stands in south-central Pennsylvania.
and distribution of the toxicants--as a means of explaining the variation in sensitivity to chemicals.
I am convinced that imaging the chemical distribution inside aquatic species in general holds great promise to better understand their sensitivity to pesticides and other chemicals.
and distribution of the toxicants--as a means of explaining the variation in sensitivity to chemicals.
I am convinced that imaging the chemical distribution inside aquatic species in general holds great promise to better understand their sensitivity to pesticides and other chemicals.
The new material detailed in the American Chemical Society journal Biomacromolecules takes the state of the art a few steps further Rice scientists said.
and matures said Mikos Rice's Louis Calder Professor of Bioengineering and Chemical and Biomolecular engineering.
The above story is provided based on materials by American Chemical Society. Note: Materials may be edited for content and length.
Studies show that the chemicals within cigarettes such as arsenic nicotine lead and ethyl phenol could leach into salt
and can leach chemicals for up to ten years. In the US alone an estimated 49.8 million kilograms of filters are discarded annually.
The story for poorly aggressive cells was said quite different Nagrath assistant professor of chemical and biomolecular engineering and of bioengineering at Rice.
and Dr Estrella Luna at the University of Sheffield has identified the key receptor binding a chemical called BABA (Î-aminobutyric acid)
Binding of the chemical to this protein triggers a secondary function that'primes'the plant immune system against future attacks by pests and diseases.
The research which has been published in the international journal Nature Chemical Biology also involved scientists from the University Jaume I in Spain and Utrecht University in The netherlands.
while they were being bombarded with the different plant chemicals. Publishing their findings this week in the academic journal Agronomy of Sustainable Development research leads Dr Colin Tosh
when they are under attack--producing chemicals which warn other plants close by of the threat.
At the same time they produce a chemical which is unpleasant to the predator. But this response doesn't happen immediately
and is susceptible to light temperature fluctuations and chemicals. Thus the researchers used a silica coating to protect the DNA creating a kind of synthetic fossil.
and is the subject of a new paper published this month in the American Chemical Society journal ACS Applied materials and Interfaces.
Wong a professor of chemical and biomolecular engineering and of chemistry; and Tomson a professor of civil and environmental engineering.
which suggests to us that the chemicals used to control pests in Europe Asia and the United states currently are not necessary in East Africa said Elliud Muli senior lecturer in the Department of Biological sciences South Eastern Kenya University and researcher at the International Centre of Insect Physiology and Ecology
and in many cases their wives too taking their own lives by drinking the modern pesticides designed to provide them with bountiful harvests--a truly horrific end as the chemicals cause swift muscle and breathing paralysis. Added Kennedy:
and produce chemicals that can help dissolve nutrients from the soil. This takes energy though
and other chemicals change in the atmosphere and also provide a measure of global human emissions.
and suggests that ratio is sensitive to the same chemicals that cause acid rain. This shows that the relationship between emissions and the isotopes is less direct than we thought
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011