Sentences with phrase «chemical composition of»

These pipes typically exhibit signs of failure at or around the 40 - year mark, and failure can be accelerated by the chemical composition of the water supply.

The other responsibilities include verifying proportion and chemical composition of prepared medicines, storing prepared tablets and solutions in appropriate containers, taking inventory of the available medicines and other administrative duties such as customer reception, attending phone calls, cash transactions, etc..

Contrary to Pacewicz's testimony, Lentini said that the chemical composition of substances found on three items of evidence used at trial were nothing alike.

The detailed chemical composition of exhaust particles was determined by using a soot particle aerosol mass spectrometer (SP - AMS).

The Aerosol Chemical Speciation Monitor is a thermal vaporization, electron impact, ionization mass spectrometer that measures bulk chemical composition of the rapidly evaporating component of sub-micron aerosol particles in real time.

Furthermore, the chemical composition of Earth's atmosphere and oceans largely developed during this period, with living organisms playing an active role.

Abstract The major biogeochemical cycles which keep the present - day Earth habitable are linked by a network of feedbacks which has led to a broadly stable chemical composition of the oceans and atmosphere...

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).

The chemical composition of wood fiber, including roots and the entire vegetative mass is roughly the same, ton for ton, as coal from the Powder River Basin.

Poorly characterized mechanisms driving both production and destruction of GEM in the interstitial air of snowpacks depend on environmental conditions (irradiation, temperature, and presence of water layer around snow grains) and the chemical composition of snow (e.g., presence of halogens or divalent mercury species as a consequence of surface deposition)(25).

Size - resolved chemical composition of aerosol particles during a monsoonal transition period over the Indian Ocean.

Here, the same model run is repeated several times with different starting conditions but with the same boundary conditions, such as a prescribed change in the chemical composition of the atmosphere.

If solar variability changes the chemical composition of the atmosphere above the stratosphere then that will change the effective radiating height.

An emerging view stresses the role of the size and chemical composition of the plume, including its water content, in controlling the climatic effects of an eruption.

My reason for asking is that some time ago I recall reading somewhere that data was being extracted from at least one Greenland ice core at times scales down to several per year; quantity and chemical composition of dust from Siberia was being analysed and interpreted.

Global and regional impacts of HONO on the chemical composition of clouds and aerosols.

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).

Fred Hoyle, «The chemical composition of the stars,» Monthly Notices Royal Astronomical Society 106, 255 - 59 (1946).

Jim, the bottom line for me is that for the earth to be in radiative thermal equiibrium with the sun, it has not been demonstrated that any change in chemical composition of the earth or atmosphere is able to affect the equilibrium temperature, providing this does not change albedo.

The chemical composition of the crust tells us that the source fluid was methane - rich, and the uranium - thorium dating tells us when this methane release happened.»

At present, co-author and oceanography associate professor Evan Solomon is analyzing the chemical composition of bubble plume samples emitted at about 500 meters deep off the Washington coast, seeing whether the gas comes from methane hydrates instead of other sources.

The researchers had to estimate such variables as the chemical composition of the atmosphere, the amount of sunlight reflected by Earth's surface back into the atmosphere, and the movement of heat and salinity in the oceans at a time when all the continents were consolidated into the giant land mass known as Pangaea.

«They find that tropospheric temperature records must be at least 17 years long to discriminate between internal climate noise and the signal of human - caused changes in the chemical composition of the atmosphere.

Human activities have significantly altered not only the chemical composition of Earth's atmosphere, but also the climate system.

slashing and burning, mining, dousing in synthetic pesticides, biologically homogenizing (e.g. through invasive species), altering the chemical composition of the air and water, and through various other forms of pollution.

I am not sure what you mean by chemical composition of the sea water John.

The chemical composition of the Oceans varies by region.

We are changing the chemical composition of the atmosphere.

Hence their attraction to geoengineering schemes aimed at regulating solar radiation or changing the chemical composition of the oceans.

But it is a proxy, because the idea that that it is not a proxy rests on the tenuous and unproven assumption that the chemical composition of the ice - core data does not undergo any fractionation processes before closing and after closing that affect the chemical composition of the bubbles thereby perfectly preserving the atmospheric concentration of CO2.

A new taxpayer - funded NASA / Penn State «scientific» study warns that «ecosystem - valuing universalist» (really «green») aliens might realize that we have been altering «the chemical composition of Earth's atmosphere,» conclude that we have «ecological destructive tendencies,» and «wipe humanity out in order to preserve the Earth system as a whole.»

One theory of many behind the solar / volcanic connection is that MUONS, a by product of galactic cosmic rays can affect the calderas of certain volcanoes by changing the chemical composition of the matter within the silica rich magma creating aerosols which increase pressure in the magma chamber and hence lead to an explosive eruption.

Our research team has spent the past two decades examining the chemical composition of the longest - lived animal that doesn't live in a colony known to science — the ocean quahog clam — to find out how the climate of the North Atlantic ocean has changed in relation to the atmosphere.

This instrument can identify the chemical composition of materials, so traces of chemicals that only come from fossil fuel combustion would leave a kind of fingerprint.

More than 20 physico - chemical processes, mostly related to the presence of liquid water, contribute to the alteration of the original chemical composition of the air inclusions in polar ice [3].

Can you imagine humans affecting the chemical composition of earth's atmosphere and oceans?

We can both agree that we should work to minimize the human alteration of the chemical composition of the Earth's atmosphere, but still disagree whether we can skillfully predict the climate consequences of such actions.

Lake Turkana is a closed basin lake, and with climate change, you already have increased evaporation, which leads to alteration of the chemical composition of the lake — and alters the ecosystem, and the fish and all the animals living in it.

When the summit core was first drilled in 1976, the chemical composition of the ice showed well - preserved annual layering throughout its depth, accounting for a time span of 1500 years.

SPENCER FINCH Moon Dust (Apollo 17) 2009 150 light fixtures and 417 incandescent bulbs Dimensions variable The hanging light piece represents precisely the chemical composition of moon dust, that was analyzed on the Apollo 17 mission in 1972.

The hanging light piece represents precisely the chemical composition of moon dust, that was analyzed on the Apollo 17 mission in 1972.

For this episode of Art Matters, the New York - based artist spoke with BMA Director Christopher Bedford about Moon Dust and how the installation's 447 lights and 150 fixtures are a scientifically precise representation of the chemical composition of moon dust gathered during the Apollo 17 mission.

Although an abstract sculpture, the installation is also a scientifically precise representation of the chemical composition of moon dust as it was gathered during the Apollo 17 mission.

When changing the players, the users can flick the Right Stick to the right so as to view how the swapping will affect the chemical composition of the other stakeholders.

Individual players are usually unaffected by the chemical composition of other stakeholders.

For colored, tinted or coated gravels, the chemical composition of the original material is not critical.

Prevention is possible in some cases, depending on the chemical composition of the stones.

This seems to change the chemical composition of the tears and help reduce staining.

Other dogs have a certain chemical composition of their saliva, and they develop dental issues.

(c) A urinalysis describes the physical and chemical composition of urine.