Sentences with phrase «made of trace elements»

Not exact matches

A silicon crystal is doped by adding trace amounts of some other element that has either more free electrons than silicon's four (producing an electron surplus and making the result negative, or n - type) or fewer free electrons (producing a net electron deficit, and hence a positive, or p - type).

They plan to explore what other traces of elements are present in the inclusions, as well as make measurements of the isotopic composition of some elements, which could reveal exactly how the metal forms and how it interacts with rocks in the mantle.

Through fun historical anecdotes and lesser - known backstories of scientific greats, this entertaining book profiles the chemical elements that make up the air we breathe and traces the history of Earth's atmosphere (SN: 7/8/17 & 7/22/17, p. 38).

Stars are made mostly of hydrogen and helium, but they also contain trace amounts of other elements, such as carbon, oxygen, iron, and even more exotic substances.

«It links volcanism and trace elements in seawater to changing populations in the biosphere,» he says, «which in turn led to changes in the earth's atmosphere that made the rise of complex life - forms possible.»

Also this year, an ambitious analysis made an almost - global assessment of sources of selenium, a trace element crucial for health, and warned of regions where climate change might cut the element's availability (SN: 4/1/17, p. 14).

About 74 percent of the Sun's mass is hydrogen, 25 percent is helium, and the rest is made up of trace quantities of heavier elements.

In addition, it is full of vitamins and trace elements, and it has only 5 mg of two natural sugars and nothing else compared to over 15 man made sugars, additives, colours and flavours and enhancers found in many sports drinks, for example.

Each amino acid is primarily made up of four key elements: carbon, nitrogen, oxygen and hydrogen, although each overall molecule has characteristic «side chain» which contains traces of different elements.

It is made from ocean water off the southern coast of Australia — pulled from an area that is especially teeming with minerals and trace elements that are vital to human health and well - being.

Greens supplements are packed with vitamins, minerals, trace elements, antioxidants and healing phytonutrients in their natural form, and they provide a convenient way to make up for any shortfall in the amount of fruits and vegetables in a person's diet.

And it is exactly the existence of these minuscule, or trace amounts of minerals and other elements that make this salt important as being a part of a healthy, balanced diet.

HPS is highly mineralized, making it one of the best sources of trace elements.

Taylor begins a romance with Sullavan, who soon joins the three comrades, making the group a jovial, fun - seeking foursome (this plot element bears traces of Hemingway's The Sun Also Rises, as well as the 1931 film The Last Flight).

Though not as existentially unnerving as Ex Machina, it's one of the most ambitious head movies ever made, laced with trace elements of Carpenter's The Thing and Tartovsky's Stalker, with a little... Continue reading →

Though not as existentially unnerving as Ex Machina, it's one of the most ambitious head movies ever made, laced with trace elements of Carpenter's The Thing and Tartovsky's Stalker, with a little Lovecraft and Alien thrown in for good measure.

All the elements are in place; huge budget, decent developer, tech know - how, bombastic set - pieces that would make a cocker spaniels eyes bleed; yet like a crude hand - traced version of a great work of art, something doesn't seem right.

My work conveys a sensory element through the process of layering, adding and erasing, gestural mark making, scratches, smudges and streaks which allow traces of history to be revealed until the desired composition emerges.

Reflections point to another central element of ZERO, namely the dealing with natural and perceptual phenomena, particularly light as a material that in itself is intangible but which makes everything visible and whose traces can be captured.

The element of time is also inscribed in these paintings; from the time involved in the different processes of their making, to the visible traces of those processes, the artist has described his work as «freezing a moment in time».

The elements then become traces and placeholders of the artist moving around a room, editing and making decisions until the final result is achieved.