Sentences with phrase «chemical element which»

neodymium A chemical element which appears as a soft, silvery metal when it is pure.

You all know the end of the story: finally argon was discovered, a new chemical element which had lurked undetected, mixed with the nitrogen.

My body is composed of atoms of the same chemical elements which are found in inorganic matter.

Not exact matches

And here are the physicists, splitting up the molecule into atoms and now picking away at the atom itself, peering down into the deep abyss in which the constituent elements of all chemical things are the same; yet never a word have they to tell us about where «form» ends and «matter» begins!»

In this sense an atom is more complex than an electron, a molecule more complex than an atom, and a living cell more complex than the highest chemical nuclei of which it is composed, the difference depending (on this I insist) not only on the number and diversity of the elements included in each case, but at least as much on the number and correlative variety of the links formed between these elements.

The process of synthesis by which azoic elements have reached their present multiplicity and complexity is an evolution, the same process entirely as the biologist traces in the order of living things, and the synthetic chemical compound embodies in itself a complex relativity capable of being expressed in most exact laws, which reflect the evolutionary emergence of its substance as much as do the organs of an animal explained in terms of evolutionary development.

He adds that just as an infinity of functions may have the same differential (functions which differ from each other by a constant — the so - called «constant of integration») so the integration of physico - chemical elements (a «summation» which, inversely, proceeds from the derivative to the function) would determine the vital action only in part.

Vitamin B12 is the only vitamin that contains a trace element — cobalt — which gives this vitamin its chemical name — cobalamin — which is at the centre of its molecular structure.

Yeast is a living plant microorganism; self - rising flour has a chemical leavener, baking powder, in it which is a quick - rise element for cakes and cookies.

Using a strict definition, a molecule does not contain ions in its chemical formula, although some types of molecules contain elements which can be ionized.

To gather more information, researchers used an X-ray fluorescence spectrometry device, which produces grayscale images of the chemical elements of the underlying paint that are characteristic of the pigments used.

To achieve this, the group synthesized a series of mixed crystals with the chemical formula Ni1 - xCuxCr2O4 in which the element nickel was successively replaced by copper.

In a new study, Scripps Institution of Oceanography at the University of California San Diego Professor James Day and colleagues examined the chemical composition of zinc and other volatile elements contained in the green - colored glass, called trinitite, which were radioactive materials formed under the extreme temperatures that resulted from the 1945 plutonium bomb explosion.

Regolith X-ray Imaging Spectrometer (REXIS)-- A student experiment provided by the Massachusetts Institute of Technology (MIT) and Harvard University in Cambridge, which will observe the X-ray spectrum to identify chemical elements on Bennu's surface and their abundances.

The zinc that was present was enriched in the heavier and less - reactive isotopes, which are forms of these elements with different atomic mass but the same chemical properties.

Nearly all mass market devices rely on microchips of the chemical element silicon, on which manufacturers etch ever smaller transistors — essentially electrical switches that can be used to fashion logic circuits for computers.

11 Now we sort elements by their number of protons, or «atomic number,» which determines an atom's configuration of oppositely charged electrons and hence its chemical properties.

The number of protons in an atom defines the chemical element to which it belongs, while the number of neutrons determines the isotope of the element.

These three chemical elements are interesting because they belong to the subset of chemical elements heavier than carbon and nitrogen which form the bulk of all the rocky planets.

They calculated which chemical groups of the periodic table have elements that are more likely to coexist in a chiral crystal.

The new finding is based on data from the gamma ray spectrometer on Mars Odyssey, which can measure concentrations of various chemical elements as far as about 30 centimetres below the Martian surface.

The catalyst was synthesised using porous crystals called metal - organic frameworks which allow precise spatial control of the chemical elements.

The Temagami Banded Iron Formation, which was formed 2.7 billion years ago during the Neoarchean period, can be used as an archive because the isotopic composition of many chemical elements such as Hafnium and Neodymium directly mirrors the composition of Neoarchean seawater.

The coal waste contains chemical elements that can be ionised by the biofertiliser, making nutrients which are essential to growth available for uptake by the plants.

Such evidence would include unusual rotational wobbles, which would result from the disturbance of having swallowed a planet, or unusual chemical signatures — containing elements that stars wouldn't have produced themselves.

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.

She explains: «Phosphorus is one of just six chemical elements on which Earth organisms depend, and it is crucial to the compound adenosine triphosphate (ATP), which cells use to store and transfer energy.

«Plants supply biomass which forms the beginning of the food chain, but insects act as pollinators and soil organisms increase soil fertility through the breakdown and retention of chemical elements such as phosphorus.

These and other chemical variations can tell us about conditions under which sediments were initially deposited and about how later groundwater moving through the accumulated layers altered and transported dissolved elements, including boron.

Ren's group isn't the first to study the new material, which has not been named but is referred to in the Nano Energy paper as simply MgAgSb - based materials, using the chemical names for the elements used to create it.

Importantly, the method works even for chemical elements present at very low concentrations, some of which are particularly useful for unveiling magma history with unprecedented detail.

Through first - principle molecular dynamics simulations and accurate energy computations, Yakobson and his colleagues determined that salt reduces the temperature at which some elements interact in a chemical vapor deposition (CVD) furnace.

«Such galaxies, which have remained dormant for most of their lives, are believed to contain the chemical elements forged a few minutes after the Big Bang.By measuring the relative number of hydrogen and helium atoms in the Little Cub we might be able to learn more about what made up the Universe in the moments after it began 13.7 billion years ago,» Cooke added.

The 3D NanoChemiscope, which was developed at Empa, not only maps samples with nanometre precision, but for the first time can also provide precise information about which chemical elements are arranged where in a sample.

The process, called laser - induced breakdown spectroscopy, hits a target with pulses from a laser to generate sparks, whose spectra provide information about which chemical elements are in the target.

Using its three main science instruments, Odyssey has mapped the global distribution of many minerals and chemical elements across the Martian surface, found evidence of large amounts of buried water ice near the planet's poles and measured the radiation environment in low Mars orbit, which could help NASA plan out future manned missions to the Red Planet.

ORGANIC COMPOUNDS Organic compounds, any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.

Registry parts include operators, which are segments of DNA to which repressor proteins bind to prevent gene transcription; cell - cell signaling elements, which produce defined outputs in response to specific chemical inputs; and riboregulators, which can be used to suppress the expression of particular genes by preventing translation of proteins they express.

Many companies distill their oils with chemicals which adds a toxic element to them.

I am aware not enough study or research has been done on Camu Camu and even though it's claimed as a superfood every body's body reacts differently to foods - which are in elements chemicals.

The simplest and most appropriate way to get a good balance of vitamins in your dog's diet is to give it organic and natural foods, which are high in vitamins and low in chemicals and other elements that contribute nothing to your dog's health.

Placed over a plinth of gypsum, the ceramic pieces are arranged in conversations with natural elements such as rocks, which refer to the origin and source of the clay, as well as to the chemical elements that produce their coloring.

The industrial waste as well as the chemicals used in cities and fields can produce an effect of bio-accumulation in the bodies of the inhabitants of neighboring areas, which occurs even when the amount of a toxic element in a given place is low.

Since global warming is the result of contra - natural processes (mostly of human - origin such as the chemical - industry / heavy - industry / carbo - engines etc.) which destabilize the entire global NATURAL balance, the only answer is not inducing artificial unnatural substances in natures elements (this only aggravates the problem or start new ones... extreme measures always do), but introduce and indeed increase the volume and mass of natural plankton.

Joerg Schaefer, a research professor at Lamont - Doherty, did the chemical analysis of the concentration of elements in the rocks using a process called surface exposure dating, which made it possible to figure out how long the rocks had been exposed.

The chemical nucleating elements form a nucleus around which ice continues to form.

And those two things mean that you can build a battery - which is just a chemical system - that is more dense with energy and lighter than those based on just about any other element.

The weather makers are desperately trying to engineer winter with unimaginably extensive atmospheric manipulation / geoengineering processes (which includes chemical and / or biological ice nucleation agents as a primary element).

The constellation's name comes from the chemical element Iridium, which has atomic number 77.

Livermore is the home of the Lawrence Livermore National Laboratory, for which the chemical element livermorium is named (and thus, placing the city's name in the periodic table).