Sentences with phrase «in a chemical reaction from»

Not exact matches

... The direct synthesis of... nucleotides from prebiotic precursors in reasonable yield and unaccompanied by larger amounts of unrelated molecules could not be achieved by presently known chemical reactions» (5).

My grade - school science teacher demonstrated the chemical reaction of baking soda and vinegar by mixing them in a test tube and placing a balloon over the top so it would inflate from the gas that formed.

from Sadie's comment last June — apparently some chemical reaction between something in the sunflower seed butter + baking soda.

In fact, raw cacao nibs are one of the best food sources of magnesium: an essential mineral involved in over 300 chemical reactions in our body, from nerve function to bone healtIn fact, raw cacao nibs are one of the best food sources of magnesium: an essential mineral involved in over 300 chemical reactions in our body, from nerve function to bone healtin over 300 chemical reactions in our body, from nerve function to bone healtin our body, from nerve function to bone health.

Aside from totally knocking me out and relaxing my muscles, magnesium is an essential mineral needed for over 300 chemical reactions to take place in the body, and many of us are in fact deficient!

Finally, you can not prevent the chiles from losing color when pickling; it is a chemical reaction involving the solubility of chlorophyl in the vinegar.

Some may be related to the diaper itself, such as an allergic reaction or sensitivity to the dyes in diapers; chemical irritation from scented diapers, wipes, soap or lotions; the detergent used on cloth diapers; or texture irritation from the diaper material itself.

When you're in a stressful or dangerous situation, your body responds by producing hormones and chemicals as part of the «fight - or - flight» reaction (so named because that's exactly what the body is preparing itself to do — to either fight off the danger or run from it).

The strikes resulted in a mixed reaction from Congress — some applauding a strong response to chemical weapons, and others calling it unconstitutional to go over lawmakers» heads.

Another argument against the false flag operation «theory»: in the past USA (or Western) reaction to chemical attacks has been puntual (Obama forcing Syria leaving its chemical weapons stockpiles, Trump launching an attack against the base from where the attack was launched).

News of the belated state action in Petersburgh comes as the Cuomo administration moves to contain political fallout from the slow official reaction to the potential health threat from pollution of water in Hoosick Falls with a chemical called PFOA, which is used in manufacturing non-stick materials and has been linked to kidney and testicular cancer and thyroid problems.

Toward High School Biology — Developed with support from the U.S. Department of Education's Institute of Education Sciences and in partnership with BSCS, AAAS Project 2061 has developed and tested an innovative eight - week curriculum unit designed to integrate physical and life science concepts to help middle school students understand chemical reactions and their role in the growth and repair of living organisms.

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.

Further calculations by Catling and his team conclude that no abiotic methane sources on a rocky planet could produce enough of the gas to counteract this process — whether it is volcanic outgassing from a planet's interior, chemical reactions in hydrothermal vents, even asteroid impacts.

In the 3 March issue of Science, researchers report a way to clean up a commonplace family of chemical reactions — turning alcohols into aldehydes, ketones, and carboxylic acids, starting materials for everything from pharmaceuticals to fragrances.

Reactions is a series from the American Chemical Society that uncovers the chemistry in everyday life.

In essence, the first pulse excites the chemical system from its original potential energy surface onto another surface, thus bypassing a bottleneck in the original pathway because the reaction leaps onto another pathway at just the right timIn essence, the first pulse excites the chemical system from its original potential energy surface onto another surface, thus bypassing a bottleneck in the original pathway because the reaction leaps onto another pathway at just the right timin the original pathway because the reaction leaps onto another pathway at just the right time.

Studies following the scandal suggested that statins might impede protection from oxidative stress or alter other chemical reactions in muscle cells.

When city officials placed shade balls in the Los Angeles Reservoir last summer to reduce evaporation and stop sunlight from triggering chemical reactions, onlookers noticed the balls arranging into strangely intricate patterns.

Volcanoes emit carbon dioxide into the atmosphere, but rain and chemical reactions that occur in rocks and sediments also remove the gas from the atmosphere.

In today's issue of Science, Cronin and his colleagues report printing a series of interconnected reaction vessels that carry out four different chemical reactions involving 12 separate steps, from filtering to evaporating different solutions.

The reason oxygen isotopes are present in a different pattern is because they are derived from sustained chemical reactions occurring on the surface of the outer solar nebula, rather than from a one - time event.

Whereas molecular gastronomy uses scientific techniques to induce weird and wonderful chemical transformations in traditional ingredients, note - by - note cooking goes a step further: it uses chemical reactions to produce meals from chemical compounds and cooking alone.

Researchers from the University of Illinois at Chicago and Lawrence Berkeley National Laboratory have developed a new technique that lets them pinpoint the location of chemical reactions happening inside lithium - ion batteries in three dimensions at the nanoscale level.

What happens in detail in the chemical reaction is that a hydrogen ion — a proton — is ejected from the pigment at the same moment the UV light reaches the pigment molecule.

Physics and chemistry professor Ahmed Zewail and his colleagues at the California Institute of Technology married two previously independent lines of research: femtochemistry, in which pairs of brief laser pulses initiate and monitor a chemical reaction, and electron diffraction, in which a molecule's structure is determined from the scatter of electrons fired at a crystal containing billions of copies of that molecule.

Sometimes, the energy from solar storms can trigger a chemical reaction that produces a compound called nitric oxide in the upper atmosphere.

From a chemistry point of view, the researchers» case was convincing: The chemical reactions they carried out in the laboratory overcame longstanding chemical challenges, to successfully yield the genetic building blocks to life.

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.

Methane could also have a nonbiological source, perhaps generated by chemical reactions between water and minerals in Martian rocks or from reactions between the sun's ultraviolet radiation and cosmic dust.

In theory, the cost of capturing CO2 could head to zero, since the resulting magnesium carbonate formed from chemical reactions between cement plant emissions and rock can be sold at a profit to the wastewater and steel - making industries, Mercier said.

Leinen easily ticks off a host of areas, from analyzing the complex mixtures of physical processes and chemical reactions in the atmosphere and the ocean to characterizing earthquakes, in which geoscientists have made important contributions to physics and chemistry.

The researchers engineered a strain in which a Synechococcus gene normally turned on during photosynthesis signals its activity by switching on the gene for luciferase, an enzyme from another bacterium that drives a light - emitting chemical reaction.

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.

The material had to be such that the solvents used in chemical reaction studies would not dissolve anything from it.

From previous experiments, the scientists knew that some chemical reactions proceed much faster in microdroplets than in larger solution volumes.

«Up to ten percent of the Earth's crustal phosphate may have originated from schreibersite, so the mineral was abundant and readily available to engage in early chemical reactions,» said Pasek.

Cooperation with AVA Biochem is part of comprehensive KIT activities for manufacture of chemical energy carriers as well as intermediates from biomass with emphasis on so - called hydrothermal methods i.e. reactions in water at increased temperatures.

It also could help in assessing what new compounds might form from underground chemical reactions.

The haze results from chemical reactions in the upper atmosphere, where ultraviolet radiation from the sun ionizes nitrogen and methane, which react to form tiny hydrocarbon particles tens of nanometers in diameter.

Pound for pound, nuclear explosives — which derive their power from runaway chain reactions in their radioactive fuel — carry about a million times the energy density of chemical explosives.

In Zatko's case, she says the support did produce a finding that could benefit society at large: She concluded that chemical reactions in snow were making only a minimal contribution to the region's ozone pollution, compared with emissions coming from natural gas drillinIn Zatko's case, she says the support did produce a finding that could benefit society at large: She concluded that chemical reactions in snow were making only a minimal contribution to the region's ozone pollution, compared with emissions coming from natural gas drillinin snow were making only a minimal contribution to the region's ozone pollution, compared with emissions coming from natural gas drilling.

These enzymes share a common core structure but are very flexible in the chemical reactions they catalyze, which range from the breakdown of fat to the detoxification of chemicals called peroxides.

The privately funded Space Studies Institute, which he ran in Princeton, built working models of «mass drivers», electromagnetic launchers for putting payloads into lunar orbit, and commissioned investigations into the most efficient chemical reactions for extracting oxygen and other useful elements from the Moon.

The aromatic teardrop in her vial was extracted from the crust of a white bread loaf a month earlier and is a crucial part of an experiment that could overturn a tightly held belief about the Maillard reaction, one of the key chemical responses that occurs during cooking.

He wanted to find out just what happened in the process of generating electricity from chemical reactions.

«Minerals could have served at least five significant functions,» he wrote, «from passive props to active players, in life - inducing chemical reactions.»

A similar chemical reaction stemming from the sloppy disposal of Los Alamos» nuclear waste in 2014 provoked the shutdown of a deep - underground storage site in New Mexico for more than two years, a DOE accident investigation concluded.

Others soon discovered even more complex molecules, providing evidence for a host of chemical reactions taking place in young and dying stars and giving credence to the idea that molecules from space could have seeded Earth with the building blocks of life.

Whether in the form of common table salt (sodium chloride) or more exotic compounds like potassium iodide, salt was found to allow chemical reactions by lowering the energetic barrier that otherwise prevents molecules from interacting at anything less than ultrahigh temperatures, Yakobson said.