Sentences with phrase «chemical reactions required»

Vitamin K represents one of several compounds essential to the coagulation cascade, the series of chemical reactions required to stimulate the formation of a blood clot.

Their work can potentially guide efforts to store and retrieve energy from other chemical reactions required for the production and utilization of renewable energy as well.

The chemical reactions required to synthesize each drug take place in the first of two modules.

Einstein Charter High Principal Nathan Stockman even joined in, learning about the chemical reaction required to create «silly putty.»

Not exact matches

What is required is entropy (including the ability for matter to move within dimensions) and the natural forces that exist (tendancies for chemicals to make certain reactions over others, gravity, and the many other forms energy takes.)

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

To help make ideas about energy more concrete, for example, the new unit will use a variety of analogies from more familiar physical systems (e.g., combustion and charging a cellphone battery) to help students understand those same energy - releasing and energy - requiring chemical reactions and energy transfer when they occur in living organisms (e.g., cellular respiration, creating a charge across a membrane in mitochondria and nerve cells) where the reactions are more complex and difficult to observe.

It would be surprising to find chemical reactions similar to those we believe are required for water - based biochemistry operating at such temperatures.

The study notes that narrowing down that percent range requires particle accelerator experiments on water ice to more accurately gauge the number of chemical reactions that result per unit of energy deposited by cosmic rays and solar energetic particles.

It requires the special conditions found deep within frigid molecular clouds, where dust shields against destructive ultraviolet light and aids chemical reactions.

The drug, benzylpiperazine, isn't difficult to make; it requires a chemist to trigger a reaction between two chemicals in a flask, then cool them down until the compounds combine into crystals and the drug precipitates out.

These machines require about an hour to perform the chemical reactions needed to add one amino acid to a chain.

Ion thrusters are therefore able to achieve high specific impulse, reducing the amount of reaction mass required, but increasing the amount of power required compared to chemical rockets.

The phrase «chiral catalyst» means that the catalyst that orchestrates the entire reaction has the proper orientation — a left - or right - handed configuration as the situation requires — in order to create the desired chemical transformation, he explained.

In their report that has received advance online publication in Nature Nanotechnology, a research team based at the Wellman Center for Photomedicine at Massachusetts General Hospital (MGH) describes how a nanomedicine that combines photodynamic therapy — the use of light to trigger a chemical reaction — with a molecular therapy drug targeted against common treatment resistance pathways reduced a thousand-fold the dosage of the molecular therapy drug required to suppress tumor progression and metastatic outgrowth in an animal model.

They also replicate on their own, whereas chemical reactions in the lab require a scientist's near - constant attention.

Another immediate consequence of roaming is that it represents a deviation from the current chemical transformation paradigm, called transition state theory, and needs to be taken into consideration in practical applications requiring chemical reaction rates, Tarnovsky said.

But the powerful light sources — often lasers — required to activate the fluorescent molecules also burn them out and spark toxic chemical reactions inside cells.

The chemical reactions that produce the barbituric acid and melamine nucleotides don't require the use of enzymes and extreme parameters like high heat and pressure.

The wires assemble themselves and require no chemical reaction or solderinga bonus in terms of miniaturization, Velev adds.

«The direct growth of anchored MoSoy nanocrystals on graphene sheets may enhance the formation of strongly coupled hybrid materials with intimate, seamless electron transfer pathways, thus accelerating the electron transfer rate for the chemical desorption of hydrogen from the catalyst, further reducing the energy required for the reaction to take place,» Sasaki said.

A new generation of platinum - copper catalysts that require very low concentrations of platinum in the form of individual atoms to cleanly and cheaply perform important chemical reactions is reported today by Tufts University researchers in the journal Nature Communications.

Chemical engineers have figured out how to synthesize many of these molecules in bulk, but the intricate reactions require expensive materials and often produce poisonous byproducts.

A catalyst is a substance that speeds up a chemical reaction or lowers the energy required to get it started without getting used up itself.

They found that pigment isolated from red hair requires less energy to undergo the chemical reaction that produces the unstable, DNA - damaging free radicals linked to cancer.

We know now that such a transformation requires not a chemical reaction but a nuclear one, far beyond the reach of the technology of the time.

If you have a mixture where chemical reactions can result in different outcomes, you can, by choosing the required pulse shapes, select the desired outcome,» says Tolstikhin.

Methods: Storing energy in hydrogen gas requires an energy source to power a catalytic chemical reaction that results in the creation of hydrogen gas.

Making chemicals for industrial processes often requires scientists to use a catalyst — a substance that speeds up a chemical reaction, reducing the amount of energy it takes to make different products.

«The spatial confinement of these reactions provides the precision required to generate complex chemical images like the Mini Lisa.»

This anode reaction requires less energy and is faster than water oxidation while producing an industrially important chemical product.

Because solvents are used by chemists to carry out chemical reactions or observe chemical and biological phenomena, more specific measures of polarity are required.

If you can make them use the water environment as fuel to catalyze a chemical reaction, then can you make a version that functions to break up water to hydrogen and oxygen for green energy generation without having to add the required energy directly?

Metabolism is most often associated with calorie burning, but it actually refers to all chemical reactions that occur in our cells and keep us alive — and the energy required to make all those reactions happen comes from calories.

The metabolism is a chemical reaction that breaks down the foods that you ingest into its most basic compounds and absorbs the appropriate nutrients to provide the energy you require for everyday tasks and to maintain proper health.

This nutrient functions to stimulate cell catalysts or enzymes to stimulate chemical reactions that cells require in order to work efficiently.

Enzymes are catalysts, which are required for chemical reactions to take place.

This is important since dogs require water for their survival, not necessarily just to quench their thirst but also to provide a safe and optimum environment in and out of their cells for important chemical reactions to take place.

The high temperatures are required to drive the chemical reactions to split the H2O and CO2 into the mixture of hydrogen and carbon monoxide, with a separate stream of pure oxygen by - product,» Furler explained.

This increase of other emissions is largely because collecting and burying CO2 — a process called carbon sequestration — requires additional energy, new equipment and new chemical reactions at the plants.

Some of the key qualifications that the Resume Format should highlight include acquaintance with statistical tools, knowledge of computer programs required for maintaining lab database, command on chemical reactions, and understanding of lab safety protocols, lab maintenance, and other such skills.

• Demonstrated expertise in handling institutional laundry equipment and operations • Familiar with reaction of common fabrics to detergents, washing agents and water temperatures • Qualified to work with laundry chemicals in a safe and effective manner • Exceptional knowhow of health and safety practices required in institutional laundry