Sentences with phrase «oxygen dissolved in the water»

By ensconcing the lithium inside the membrane's seal, the PolyPlus battery reacts safely with the oxygen dissolved in the water and delivers as much as 1,300 watt - hours per kilogram of electricity.

Less oxygen dissolved in the water is often referred to as a «dead zone» (in red above) because most marine life either dies, or, if they are mobile such as fish, leave the area.

But it is worth noting that though the Fish & Wildlife Dept. has ruled this fish kill a result of natural causes, the Gulf of Mexico has a severe problem with marine dead zones, as New Scientist explains: «Summer dead zones are common in the Gulf of Mexico, caused by the large amounts of fertiliser that get flushed down the Mississippi river, which triggers a dramatic drop in the amount of oxygen dissolved in the water.»

Not exact matches

Like real scientists, we waded out in the water to measure dissolved oxygen and various pollution indicators with our new Hach Kits.

Its core competence is the in - line measurement of conductivity, resistivity, TOC, dissolved oxygen, bioburden, sodium, silica, chloride / sulphate and ozone in determining and controlling water purity.

NOTE: Just like oxygen cleaner and other powders don't dissolve well in cold water, neither does most natural laundry powders.

That data included dissolved oxygen in the water, pH, water temperature, salinity, photosynthetic activity and turbidity.

Fish are dependent on oxygen that dissolves in the surface water and then sinks downward, but it is only within the past 70 million years that the deep seas have been oxygenated.

Other specific conditions, such as the concentration of dissolved oxygen in the pore water of the filter body, reduce the ability of pathogens to survive in planted soil filters.

Yet in water, this coating can dissolve, releasing the TiO2 and allowing it to react with sunlight and oxygen to form numerous compounds, one being hydrogen peroxide, or H2O2.

Matula says this sudden illumination happens because during the first bout of sonoluminescence, temperatures in the bubble, which can be as high as several hundred thousand degrees — hotter than the sun's surface — do something to nitrogen and oxygen to make them form compounds such as nitrous oxide that dissolve in the surrounding water.

A new study led by researchers at the Virginia Institute of Marine Science reveals that land use in the watersheds from which this «dissolved organic matter» originates has important implications for Bay water quality, with the organic carbon in runoff from urbanized or heavily farmed landscapes more likely to persist as it is carried downstream, thus contributing energy to fuel low - oxygen «dead zones» in coastal waters.

During the expedition, scientists carried out analysis of the salinity, temperature, dissolved oxygen and the microalgae contained in the various bodies of water in the Atlantic, and then compared this data with that obtained by the Biobox.

In some of the samples, the team dramatically reduced the concentrations of dissolved phosphate and oxygen to simulate conditions that might exist inside equipment used to recycle urine into water on spacecraft during long - duration flights.

Changes in chemical composition and disruptions to dissolved oxygen levels in the water from pollutants and construction could harm numerous populations of freshwater and marine fish found nowhere else in the world.

Unlike its related species, the yellow - bellied sea snake (Hydrophis platurus), the yellow sea snake subspecies lives in a significantly more hostile environment — the waters in the gulf are warmer, often turbulent, and the dissolved oxygen in them occasionally drops to extremely low levels.

However, when there is no oxygen in the water — as regularly occurs at the bottom of the Chesapeake Bay during the summer time — the microbes can't do their job and dissolved methane is released into the water column and rests there at the bottom.

Crocodiles use a waste product of metabolism — the bicarbonate ions formed when carbon dioxide dissolves in water — as the trigger for haemoglobin to unload the oxygen it carries.

She found that in anoxic conditions, when there is no oxygen in the bottom layers of the Chesapeake Bay's waters, dissolved methane built up, probably coming from the mud, and when storms mixed up the invisible layers of the Bay's waters, the methane made it to the surface and into the atmosphere.

Hypoxia at the bottom of Lake Erie occurs during the summer as a result of biological activity in the colder bottom layer that consumes dissolved oxygen in the water.

After taking the samples back to the lab, the team sterilized the outside of the rocks, carved away their outer layers, then incubated the exposed samples in 65 °C waters similar to those infiltrating the sea floor at the site — poor in oxygen but rich in chemicals such as dissolved hydrogen, sulfates, acetates, methanol, and dimethyl sulfide.

Lowest readings of dissolved oxygen were found in late summers, as is the case in other estuaries along the Oregon coast, when incoming salty seawater settles longer in the estuary and warmer, drier conditions reduce the amount of fresh water from the Coos River.

(bottom) Two days in de-aerated water leaves the flakes untouched (f), but «normal» water (containing oxygen dissolved in it) is the cause of degradation.

They limited data sources to locations around the world in which paleoceanographic data also exist, using seven variables: salinity; potential temperature; oxygen isotope ratios in water; carbon isotope ratios in dissolved inorganic carbon; and concentrations of phosphate, nitrate, and dissolved oxygen.

We present such a relationship for aragonite saturation state for waters off Northern California based on in situ bottle sampling and instrumental measurements of temperature, salinity, and dissolved oxygen.

Hypoxia, or low oxygen, is an environmental phenomenon where the concentration of dissolved oxygen in the water column decreases to a level that can no longer support living aquatic organisms.

In order to increase water circulation and add valuable dissolved oxygen to the water, there should be an air stone in each corner of the tanIn order to increase water circulation and add valuable dissolved oxygen to the water, there should be an air stone in each corner of the tanin each corner of the tank.

Not so much by direct photolysis of water vapor (not generally a lot of that in the stratosphere), but from CH4, which could build up in a nearly oxygen - free atmosphere, and being largerly of biotic origin, with the H coming from photosynthesis (releasing O); O2 buildup itself was delayed because of geologic O2 sinks (in particular, the conversion of ferrous Fe (naturally present in the crust and mantle and which can dissolve in the oceans) to ferric Fe (precipitates out of the water, the source of banded - iron formations, which humans have used to get Fe).

That leaves very little dissolved oxygen in the subsurface waters.

Much of the organic matter associated with this high productivity sinks onto the relatively wide continental shelf, where decay results in the reduction of dissolved oxygen in bottom waters [5].

Biochemical Oxygen Demand (BOD)- The amount of dissolved oxygen consumed by micro-organisms (bacteria) in the bio-chemical oxidation of organic and inorganic matter in waste Oxygen Demand (BOD)- The amount of dissolved oxygen consumed by micro-organisms (bacteria) in the bio-chemical oxidation of organic and inorganic matter in waste oxygen consumed by micro-organisms (bacteria) in the bio-chemical oxidation of organic and inorganic matter in waste water.

Eutrophication - The process by which a body of water (often shallow) becomes (either naturally or by pollution) rich in dissolved nutrients, with a seasonal deficiency in dissolved oxygen.

In addition, reservoir water is typically low in dissolved oxygen and colder than normal river wateIn addition, reservoir water is typically low in dissolved oxygen and colder than normal river watein dissolved oxygen and colder than normal river water.

If we are able to overload the system and maximize productivity within rivers, deltas, and their freshwater plumes — it should be possible to completely deplete dissolved oxygen in near shore waters and give carbon the best chance possible for preservation and burial.

These oxygen isotopes are found naturally in both the atmosphere and dissolved in water.

As oxygen remains dissolved best in colder water, this creates oxygen deficits in the warm water to varied extents.

The sensors on the mooring will measure levels of dissolved CO2 in the water every three hours as well pH, temperature, salinity and dissolved oxygen.

After the organisms living in these waters died, their remains sank into a bottom layer of water characterized by low levels of dissolved oxygen.

Although all turtles and tortoises breath air like us, some species have adapted to spending extended amounts of time underwater by developing large cloacal cavities lined with many finger - like projections in the rear of their shells that can take in water and extract dissolved oxygen in a pseudo-gill-like function that operates independently of their regular lungs.