Sentences with phrase «through chemical reactions»

Production Chemists conduct laboratory research to develop products obtained through chemical reactions for manufacturing companies, such as cosmetics.

Nitrous oxide molecules stay in the atmosphere for an average of 114 years before being removed by a sink or destroyed through chemical reactions.

In the 1970s, he concentrated on photography, returning to paint in the 1980s, when he produced abstract works created by chance through chemical reactions between paint and other products.

Stress increases the production of free radicals and inflammation in our bodies through the chemical reactions that take place to help us deal with stressful situations.

One of the most prevalent theories as to how life evolved on Earth is through chemical reactions at deep sea hydrothermal vents.

While the methane in the Von Damm vent system they studied was produced through chemical reactions (abiotically), it was produced on geologic time scales deep beneath the seafloor and independent of the venting process.

These materials are often obtained through chemical reactions of complex synthesis that use toxic reagents (for example benzoyl peroxides benzene and aniline) and calcinations at high temperatures close to 1500 ° C.

As its concentration rises in the atmosphere, carbon enters the ocean through chemical reactions, causing its pH at the surface to drop by 0.1 units since the preindustrial era.

Fuel cells generate electrical energy through a chemical reaction of hydrogen and oxygen.

The diagram on the right shows how two positive hydrogen ions gain electrons through a chemical reaction at the moly sulfide nanocluster to form pure molecular hydrogen.

Direct «observation» of the bond making, through a chemical reaction, has been longstanding dream for chemists.

Energy storage devices, such as fuel cells and rechargeable batteries, convert chemical energy into electricity through a chemical reaction.

The new research indicates that bioluminescence — a phenomenon in which animals generate visible light through a chemical reaction — could promote communication and mating in the open ocean, an environment with few barriers to reproduction.

Other groups have shown that graphene oxide can be made moisture responsive through a chemical reaction called reduction, which removes oxygen from molecules.

An astonishing variety of species use bioluminescence (the natural production of visible light through a chemical reaction) to catch food, hook up with mates, or scare off intruders.

HAZARDOUS POLYESTER WASTE In the past, polyester was made from coal, air, water, and petroleum through a chemical reaction process between alcohol and an acid.

But because they do it in an electric field rather than through a chemical reaction, they have different characteristics that can provide advantages over batteries in certain applications.

Solar panels use photovoltaic cells to convert sunlight directly into electricity through a chemical reaction.

Not exact matches

The gasification process takes organic, carbonaceous materials and transforms them into efficient synthetic gas through a series of chemical reactions held at high temperatures.

Our cells break down the sugars, and the electrons flow through them in a complex set of chemical reactions until they are passed on to electron - hungry oxygen.

The diffusion of chemical species through the reaction medium requires time.

The claim with regards to teething specifically, is that when the Amber beads are worn, the Succinic Acid is absorbed into the body through the skin as the result of a reaction to our normal body heat, and acts as a natural pain reliever, easing baby's pain without the use of medication or other chemicals.

Here's why: When sunlight hits the skin, specifically UVB rays, the body begins to go through a natural chemical reaction that turns a prohormone on the skin into vitamin D.

Exploring chemistry through materials we can find in our own kitchens is typically a safe way to learn about chemical reactions.

Our cells break down the sugars, and the electrons flow through them in a complex set of chemical reactions until they are passed on to electron - hungry oxygen.

Now, teams of scientists in the United Kingdom and Switzerland reporting in the 3 October issue of Nature have shown that the substance forms during cooking through a well - known chemical process called the Maillard reaction.

As each carbonate species reacts differently when diffusing or flowing through water, the researchers characterized each reaction, then worked each reaction into a reactive diffusion model — a simulation of chemical reactions as carbon dioxide flows through a briny, rocky environment.

That is because the Grenoble movie makers hope to reveal how protein molecules twist and turn as they run through the lightning - fast chemical reactions that underlie biology's fundamental processes.

Mitochondria make energy through a series of chemical reactions that pass electrons along a membrane.

Industry currently separates out the sugars from the lignin through a two - step process using harsh chemicals and reaction conditions in the first step, and an expensive enzyme in the second step.

Those gasses flow into the oxidizer section and the chemical reaction there creates tremendous heat and expanding gasses that flow through a nozzle creating the bulk of the motor's thrust.

Reactants can flow into the hollow structure through holes in the faces, interacting with more platinum atoms in the chemical reaction than would be the case on a flat sheet of platinum or traditional, nonhollowed nanoparticles.

It is the first time we have been able to watch chemical reactions at this level and observe the fate of molecules as the chemical reactions take place — from the starting molecules all the way through to the product.»

These are intended to slow the flow of water through the wreck, minimising the release of plutonium and slowing chemical reactions that cause corrosion.

Included in this group are enzymes that methylate and demethylate DNA, as well as those that modify histones by adding chemical groups through acetylation, methylation, and sumoylation reactions, amongst others.

Within 5 to 10 years, electrocatalysis — which stimulates chemical reactions through electricity — could be a way into this process.

Unlike batteries, which work through relatively slow chemical reactions, ultracapacitors store electricity on the surface of an electrode; thus they can be recharged almost instantly.

The research, focused on developing thermosensitive nano - hydrogels which, through a polymerization technique, mixes substances with different chemical and physical characteristics, achieving a chemical reaction and forming a set of small spheres called polymers.

We could then identify those that generated unprecedented levels of 120 milligrams per kilogram of artemisinic acid in their leaves, which can be readily converted into artemisinin through simple chemical reactions.»

However, the shape of a molecule can change, for example, through proximity to other molecules, external forces and excitations, and also when a molecule makes a chemical connection with another molecule, for instance in a chemical reaction.

Nitrate mobilizes naturally occurring uranium through a series of bacterial and chemical reactions that oxidize the radioactive mineral, making it soluble in groundwater.

A detonation sweeps through an explosive as a supersonic shock wave driven by the energy - releasing chemical reactions the wave induces.

In terms of the potential for life, he said the only possible drawback is that due to its size, it only take about 250 million years for the entire ocean to be recycled through the rock — and once this is done, the number of chemical reactions that take place becomes very limited.

The chemical reactions she has developed are widely used throughout the pharmaceutical industry to create new drug candidates, are being studied by chemical companies interested in accessing important chemicals used in farming, and are being utilized to prepare a type of chemical (tracer) that allows doctors to view the heart's sympathetic nervous system through positron emission tomography (PET) scans.

A reaction pathway that can form a hydrocarbon called pyrene through a chemical method known as hydrogen - abstraction / acetylene - addition, or HACA, is shown at the top.

The group evaluated how chemical imbalance in Europa could be initiated through the emanation of water leading to chain reactions between water and chemical elements found in Europa's crust — however, a total lack of empirical data prevents scientists from unequivocally presuming any of these events (an «Europa Mission» may take place as late as 2030, stated Nasa, the US space agency).

These two chemicals could produce components of the genetic material RNA, the team discovered through a series of reactions.

Many of the heaviest elements in our universe formed through a chain of chemical reactions.

The researchers knew they needed a catalyst that could not only support active and efficient chemical reactions, but one that could also provide a stable interface with the semiconductor, allow the charge generated by the absorption of light from the semiconductor to be efficiently transferred to the sites doing catalysis, and permit as much light as possible to pass through.

Through a set of experiments, they were able to analyze and quantify how the polymer affects the chemical reaction rate in the sulfur cathode, which is key to achieving high current density and high power with these cells.