Sentences with phrase «as ethylene»

Don't set your flowers near ripe fruit; the chemicals from the fruit (such as ethylene) will «ripen» your flowers.

In general, coolants degrade over time as the ethylene glycol breaks down into primarily glycolic and formic acids.

Here, we discuss the toxicity and the cellular uptake of different silver nanoparticles functionalized with citrate, three different monosaccharides as well as ethylene glycol on two different cell lines.

Some recent results suggest that even supposedly well understood reactions such as ethylene polymerization may actually involve catalysts that behave as if they contained a metal - carbon double bond instead of a metal - carbon single bond.

«I think it's a very clever idea,» says Dean Rosenthal, a molecular biologist at Georgetown University in Washington, D.C. Van der Schans and Rosenthal say they can also conceive of skin tests for other chemical agents, such as phosgene, or industrial pollutants such as ethylene oxide — anything that has a way of getting under the skin.

The study — conducted by what was then the Texas Natural Resource Conservation Commission, the EPA and more than 40 other public, private and academic institutions — singled out as culprits VOCs such as ethylene, a flammable gas used mainly in the production of plastics.

Simultaneously, cryoprotectants that are made up of smaller molecules such as ethylene glycol or glycerol are able to permeate the cell so it doesn't shrink up like a raisin.

In the 1950s, chemists at DuPont found that when they added metals such as molybdenum to organic compounds such as ethylene and propene, it caused the reactants to change shape.

The research team — including graduate student and first author Jeffrey Fisher, postdoctoral fellow Songkil Kim and senior research engineer Peter Kottke — used low volatility solvents such as ethylene glycol, dissolving a salt of silver in the liquid.

So for the current technology that we have, it makes more sense to stick with [molecules with fewer carbon atoms] such as ethylene or carbon monoxide, and then to upgrade those molecules using other processes.

Not exact matches

Ethoxylated ingredients (made with petrochemical ethylene oxide that results in a trace contaminant which is classified as a possible carcinogen)

The banana's carbon footprint includes the growing, packing, shipping and transport, as well as the energy produced to treat bananas while they are being ripened (bananas are picked green and then are artificially ripened with ethylene gas under controlled conditions).

The plant is DuPont's largest manufacturing site in Texas and makes high performance ethylene copolymers, such as Surlyn ® ionomer resin and Vamac ® ethylene acrylic elastomers, which are used for packaging, automotive components, construction materials and other everyday items.

It is proposed as a replacement for oxygen - barrier films that rely on the use of ethylene vinyl alcohol copolymer (EVOH) or nylon MXD6, which lose their barrier properties when exposed to water.

Quarantine (import): An importer is required to either treat (eg methyl bromide or ethylene oxide), re-export or destroy an imported commercial consignment of goods made from natural forest materials, such as bamboo, which has not been treated off - shore and / or is not accompanied by an acceptable treatment certificate.

Avoid storing next to ethylene gas - releasing fruits such as apples, apricots, melons, and figs.

But, the presence of carcinogenic 1,4 - dixoane as a result of using petroleum derived ethylene oxide doesn't really seem earth friendly to me.

Instead, put tomatoes in a sealed paper bag with or without ethylene - producing fruit such as bananas.

If you place an avocado into a bag, it re-absorbs the ethylene it has produced... and this acts as a stimulant to produce even MORE ethylene.

Stefanik prides herself on raising substantial dollars from small upstate donors, as well as expending substantial quantities of shoe leather (or, in her case, Nike ethylene vinyl acetate) to meet voters face - to - face.

There's a cathode and an anode; at the anode, water is split into protons and oxygen gas, and at the cathode, CO2 is electrochemically reduced to other value - added chemicals, such as carbon monoxide, methane, ethylene.

He's optimistic that the gene will work in other plants as well, such as broccoli, which ethylene turns soft and yellow.

The conventional industrial solution is to convert this undesirable acetylene into ethylene as well, but this step requires the use of palladium, an expensive and rare metal, as a catalyst and consumes a significant amount of energy.

Materials capable of storing heat include those such as bricks or concrete that slowly release the stored heat, and others such as water or ethylene glycol that take in heat when they transform from a solid to a liquid.

The researchers show that, when ethylene is perceived, transcription of certain genes that function as circuit breakers of ethylene signaling occurs, but protein production becomes restricted until ethylene is removed.

Additionally, ethylene and ethanol could serve as the building blocks for a range of consumer goods, and CO2 - derived formic acid could be used by the pharmaceutical industry or as a fuel in fuel cells.

Most of the 140 types of molecules found in space have been discovered here, including some common on Earth: acetic acid (vinegar), ethylene glycol (the chief ingredient in antifreeze), and a basic sugar known as glycol aldehyde.

«For simple substrates, such as oxidizing ethylene to produce ethylene oxide, this is already possible using commercialized processes,» he said.

Because every part of the ethylene monomer is included in the finished polymer, the free radical polymerization of polyethylene is referred to as an addition polymerization; the ethylene molecules are simply added together.

The researchers have determined the structure of the intermediate formed when the hydrocarbon ethene (also called ethylene) reacts with halogens such as chlorine and bromine.

Chemical producers try to tailor the process to produce as much ethylene and as little ethane possible, but selectivity remains a challenge, Swearer said.

For example, poly (ethyleneterepthalate), a polyester known as PET that is commonly found in soda bottles, forms from a reaction of two monomers: ethylene glycol and terephthoyl chloride.

When liquid fuel is the goal, then the ethylene is chemically bound together to form even longer hydrocarbon chains that we know as gasoline or kerosene (jet fuel).

As a proof - of - concept for the new antenna - reactor catalysts, Swearer, Halas and colleagues conducted acetylene conversion tests at LANP and found that the light - driven antenna - reactor catalysts produced a 40 - to - 1 ratio of ethylene to ethane, a significant improvement in selectivity over thermal catalysis.

In the process, the microbes create methane, ethylene, and propylene gasses as byproducts.

His team looked for something that would dissolve boron oxide, and found it in a widely - used material: ethylene glycol, otherwise known as antifreeze.

In the publication, specialists from the Radboud Trace Gas Facility and several medical groups from Radboud UMC, Johns Hopkins University and the Imperial College London explain how ethylene is being formed as a product of the so called respiratory burst.

Although ethylene (or ethene) is best known as a plant hormone, humans also produce it as consequence of oxidative stress, caused for example by the UV radiation from the sun.

As the name suggests, polyethylenes are made of many copies of ethylene, a simple hydrocarbon building block with two carbon atoms surrounded by four hydrogens.

Traces of ethylene were detected by laser spectroscopy as part of the systemic inflammatory response to bacterial infection, both in isolated blood leukocytes as well as in a controlled experiments with healthy volunteers.

Moving forward, the team will continue to work on their device to scale up the production of ethylene as well as employ similar systems to produce liquid fuels such as ethanol and propanol.

As such, there is a growing demand for a cleaner and more sustainable way of producing ethylene.

Researchers from several institutions, working at Sandia National Laboratories in Livermore, California, initially found the molecules — known as enols — in a flame that was produced by ethylene, the substance used to make the common plastic polyethylene.

As concerns about levels of CO2 in the atmosphere have grown, some scientists have been experimenting with ways to make ethylene production more green.

Because the algae take in three times the CO2 to produce a single ton of ethylene, the process acts as a carbon sink.

But ethylene's ubiquity as a building block in plastics and chemicals masks an underlying environmental cost.

Philip Pienkos, principal manager of the Bioprocess R&D Group at NREL's National Bioenergy Center, said the project is beginning to focus more on the development side, even as Yu continues to work to achieve higher ethylene volumes.

We have further observations planned that will probe Pluto's atmosphere and map the distributions of hydrocarbon gases such as ethane, acetylene and ethylene that condense to form the aerosols.

It turns out the caterpillars can break down the bag's polyethylene into ethylene glycol, which can be readily converted into useful substances such as antifreeze.

Since then, researchers around the world have developed various electrochemical and photothermal catalysts that reduce carbon dioxide into compounds such as carbon monoxide, formic acid, ethylene and methane.