Sentences with phrase «chemical elements such»

«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.

The artificial seawater media consists of about 60 ingredients that include chemical elements such as calcium, sodium, magnesium plus organic and inorganic nitrogen, carbon, trace metals and B vitamins.

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.

Not exact matches

Some ingredients from just one of the manufacturers we carry: — Recycled Rubber wood (clean, natural rubber wood recycled from rubber trees no longer able to produce latex); — Non-Chemical Preservative Wood (stabilized using a chemical - free kiln - drying process); — Non-Formaldehyde Glue (toys assembled using a non-formaldehyde glue in place of the traditional toxic wood glue); — Water Based Dye (non-toxic, water based dyes to add accent colors to products, containing no heavy metal elements such as lead, mercury, etc..)

Our labels can be exposed not only to water but harsh elements such as heat, moisture, and chemicals.

Mercury is a naturally occurring chemical element that is used in several devices such as thermometers, barometers, fluorescent lamps and other devices.

They're also interested in investigating such processes for the biorecovery of valuable or scarce metal elements in other chemical forms.

Next is the tedious work of identifying the companion chemical signatures of an asteroid impact, such as the element iridium, alongside the spherules.

Many freshwater and ocean fish contain dangerous elements such as mercury, industrial chemicals such as dioxins and pesticides such as DDT that are linked to cancer, reproductive effects or other health problems.

The model helps explain why the moon is almost Earth's chemical clone yet lacks those elements that are easily vaporized, such as potassium and sodium.

Atoms of most elements, such as hydrogen, oxygen and carbon, form tight chemical bonds by sharing electrons with their neighbours in order to give each atom a stable configuration of electrons.

Most previous Antarctic ice core records have not included many of the elements and chemical species that we study, such as heavy metals and rare earth elements, that characterize the anomaly — so in many ways these other studies were blind to the Mt. Takahe event.»

MXenes are made from a three - dimensional (3D) bulk crystal called MAX (the «M» denotes a transition metal; «A,» an element, such as aluminum or silicon, from a specific chemical group; and «X,» either carbon or nitrogen).

One such ice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical species.

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.

By carefully controlling physical and chemical conditions, the elements can be recombined to form simple, and relatively harmless, compounds such as carbon dioxide, water and hydrochloric acid.

Also, other essential chemical elements in the development of wood were analysed, such as calcium.

It is produced in such large volumes because it can be easily combined with other elements and molecules, transforming it into new classes of chemicals.

«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.

Stable isotopic compositions — variants of particular chemical elements — of such remains, recovered from soil and lake sediment, may help us better understand climate change over a long span of time.

Astronomers believe that the chemical elements in the Earth and even in our own bodies, such as carbon, oxygen, and iron, were made in other exploding stars billions of years ago.

«Models of galaxy evolution will need to be able to explain how a galaxy could form the stars needed to produce the observed amounts of dust and heavier chemical elements in such a comparatively short time,» Venemans said.

Isotopes are variants of the same chemical element with different atomic weights due to having different numbers of neutrons, such as the most common carbon isotope, carbon - 12, and a heavier stable isotope, carbon - 13.

Although numerous different elements may impact the amount of this chemical, such as genetics, hormones, drugs and alcohol, a few studies have shown that dopamine in the brain is produced under the influence of some foods — actually it is produced by components of these foods.

These are chemical elements, and as such, they must come from outside sources.

Where the problems are being asked from areas such as chemical reactions, atomic and molecular structures, stoichiometry, conservation of matter, acid base reaction, kinematics and issues related to periodic table of elements.

When you highlight each element such as Na (sodium) or Mg (Magnesium), then the box at the top will display the chemical attributes of each element.

Keep your dog away from harmful environmental elements, such as cigarette smoke, car exhaust (from riding in the back of a pick - up, for example), chemicals from various products, and do not allow your dog to lie near a TV or microwave for extended periods of time.

A blood - chemistry panel measures your pet's electrolytes, enzymes and chemical elements of his blood such as

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 sculpture includes elements such as valves and flanges from petro chemical plants, tanks used for food processing, and glass vessels from the pharmaceutical industry.

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.

Changes in proxy records, either physical (such as the isotopic composition of various elements in ice) or biological (such as the width of a tree ring or the chemical composition of a growth band in coral), do not respond precisely or solely to changes in any specific climate parameter (such as mean temperature or total rainfall), or to the changes in that parameter as measured over a specific «season» (such as June - August or January - December).

Changes in proxy records, either physical (such as the isotopic composition of various elements in ice) or biological (such as the width of a tree ring or the chemical composition of a growth band in coral), do not respond precisely or solely to changes in any specific climate parameter (such as mean temperature or total rainfall), or to the changes in that parameter as measured over a specific «season» (such as June to August or January to December).

Such transmissions are utilized to manipulate jet aircraft dispersed particulate / chemical elements causing these elements to repel or congeal.