nitrogen

In areas of poor soils, within two years of cultivation, synthetic nitrogen and mineral fertilizers have to be applied heavily.

The stem cells had been removed when the embryo was a few days old and were stored in tanks of liquid nitrogen.

The concentrations of nitrogen dioxide and ozone also exceed the objectives for a few days in a year.

The body is freeze-dried in liquid nitrogen, then vibrated so that it dissolves into a fine powder.

When the liquid nitrogen is gone, grind everything up to a fine powder.

If this did not occur there would be none of the heavier elements. No carbon, no nitrogen, no life.

Melamine has no nutritional value but is high in nitrogen, making products with it appear higher in protein.

Insufficient amounts of nitrogen gas, they say, will limit plant growth regardless of how much extra carbon dioxide is available.

And I'm going to ask, after I reach equilibrium, what is the partial pressure of nitrogen hydrogen and ammonia?

Since the 1960s the amount of fertiliser used by farmers has increased sixfold, and not all of that extra nitrogen ends up in their crops.

It turns out that - if I've got molecular vibrations you know, there's nitrogen and oxygen in the air.

The best form of usable nitrogen seems to be a combination of di-ammonium phosphate (DAP) and yeast extract.

"Nitrogen creates a rather big problem that seems to me to have been given too little attention, " he said.

Liquid ammonia, mainly used as refrigerant or to make Ammonium and nitrogen, is an important yet dangerous chemical.

We are producing milk. rather than the production of nitrogen. even if it is to eat animals is not the nutritional value of it!

X-ray photoelectron spectroscopy (XPS) shows that the reason is the increase of oxygen and nitrogen polar functional groups on the surface.

So Arcadia is trying to improve crops' ability to absorb nitrogen by changing their biological makeup, Lewis said.

The scientists said the Mini- Helicon is the first rocket to run on nitrogen, the most abundant gas in Earth's atmosphere.

In the current paper we summarized the methods for the detecting of the total nitrogen, as well as the separate. . .

Corn is one of the best indicators for nitrogen deficiency among the field-crop plants.

High-temperature superconductors, those that operate at liquid nitrogen temperature or above, are not as technically advanced at this point.

There would be nowhere near as many people doing all sorts of other things to the planet if humans had not sped the nitrogen cycle up.

Results: There was no significant difference of every-day intake of calories and nitrogen between the two groups.

The nitrogen fertilizer dosage of the Chinese paddy rice occupied 37% of that of the whole world's.

Asia is expected to produce a rapidly increasing surplus of nitrogen, but will continue to import phosphate and potash.

And we're going to ask the question, so I take nitrogen, I take some, hydrogen, I mix them together in a container.

The invention discloses a boron-containing and nitrogen-containing compound for a lubricant additive and a preparation method thereof.

It could be concluded that the apple fruit with high nitrogen content, leading to hitter pit was an important factor for disease.

Placed within a stainless steel chamber vacuum tube from the front of the vacuum tube vacuum, or back-end exhaust into nitrogen.

moreover , they are rugged and do not require liquid - nitrogen cooling , making them compact enough to fit inside a shoe box.

Purine: Any of a class of heterocyclic compounds with a two-ring structure composed of carbon and nitrogen atoms.

Chandran's research focused on using a biological means of removing nitrogen, a technique known as sustainable water sanitation and hygiene.

Metabolic acidosis, leukocytosis , high C-reactive protein and blood urea nitrogen levels were all poor prognostic factors.

Specifically, we have measured how the spin on an N-V center interacts with another spin on a nearby nitrogen impurity (with no vacancy ).

Roman says once the algae use up the nitrogen, they eventually die and sink to the bottom, taking the nitrogen with them.

Nitrogen is also used to prevent oxidation, but take care not to blow too hard or cool the die so much that it distorts the extrudate.

All over the world, increase the nitrogen fertilizer application rate is an important measure to increase maize production right now.

Peptide and ammonium sulfate were the best nitrogen for its growth, but urea was the worse among the 7 nitrogen sources.

After twice removal, the concentrations of phosphate and ammonia nitrogen in the hogpen waste water can come up to the discharge standards.

This was mainly due to a small number of nitrogen containing diamonds within the.

Red edge position (REP, 680-780 nm) has been used for evaluating crop leaves nitrogen status.

The heat tube corrosion guards were developed to replace the tube corrosion guards used in small scale nitrogen fertilizer plants.

Seaweed also tends to thrive in water rich with nutrient pollution, particularly nitrogen.

The result, when it is burned, is the near-complete abolition of soot, and a reduction of up to 80% in nitrogen-oxide emissions.

Researchers say the average American produces forty-two kilograms of nitrogen pollution a year.

Breeding or genetic modification could increase the efficiency with which animals and plants take up nitrogen.

These strains were used for further study for influence of nitrogen levels on their nodulation and nitrogen fixation efficiency.

The tip of a catheter is then used to apply energy (either radiofrequency to heat or liquid nitrogen to freeze) at these locations.

Weldability is one of the important properties that will be affected the application of high nitrogen austenitic stainless steel.

To exclude higher oxygen concentration in an equipment with an potential source of ignition we use Nitrogen to dilute the air in the vessel.

Because there is only a limited supply of nitrogen out in the open ocean, additional amounts of it can have a huge stimulating effect.

Altogether, such interventions would add up to about 54m tonnes of less reactive nitrogen, about 28% of what was created in 2005.

The soil organic matter, nitrogen, available potassium in the drought white gourd forest were all highest.

In a word the affect on the uncertainty of the content of nitrogen with capacity method was the volume change with the temperature change.

before admitting hydrogen into a system , purge it with nitrogen to ensure that a flammable mixture cannot be developed.

More nitrogen billows from power-plant smokestacks, blowing in the wind until it settles as acid rain.

In the clip above we see an attempt to "cool" the thermite reaction by dumping it in a vat of liquid nitrogen.

He estimates that up to two billion dollars worth of nitrogen , phosphorous and potassium is lost from African soil each year.

These smaller organisms are also stimulated by nitrogen and phosphorous nutrients running off the land.

Economic benefits could be realized as well if treatment plants used nitrogen removal to earn credits for greenhouse gas removal.

Think how expensive it would be if we had to pay to remove hundreds of thousands of tons of nitrogen from our waterways every year.

Fishponds had the least nitrogen pollution, compared to other passing-by water bodies, and the main pollutant was organic nitrogen.

Constructed wetlands, as a new kind of wastewater treatment technology, are widely studied and used in Nitrogen and Phosphorus removal.

It is also where nitrogen and oxygen interact with the sun's lethal solar wind creating the aurora around the earth's poles.

But a few examples had also reported that nitrogen fertilizer reduces the herbivore performances.

Processes that use nitrogen as a liquid do not require the vaporizers and pressure control manifold.

The student with the nitrogen finished up and told me the wart would drop off after a few days.

Both sediment nitrogen and sediment temporally showed peak values, while sediment phosphorus did not.

There was a positive correlation between the amounts of most soil microbe and soil nitrogen content.

One of the biggest hazards people have carbon monoxide, hydrocarbons, nitrogen oxides, lead compounds and particulate matter.

Currie is studying whether nitrogen-fixing bacteria help break down the ants' leaf cuttings into a fungally-digestible form.

however , to exploit and utilize biological nitrogen - fixation is one of the important ways to solve those problems.

Micro-organisms able to metabolise sulphur and nitrogen have the potential to achieve the same endpoint under more normal conditions.

But the nitrogen in the air was replaced with a nitrogen atom with a different number of neutrons, called an isotope.

To some, worries about nitrogen will doubtless seem to be no more than the latest environmental bandwagon.

Rhizobia are able to induce the organogenesis of root nodules on leguminous plants and reduce atmospheric nitrogen into ammonia.

Used coffee grounds , in moderation, can do wonders for the garden by adding nitrogen to the soil.

And organic nitrogen is better than inorganic nitrogen for mycelia growth among which yeast extract is the best one, urea is the worst one.

The bulk of the molecule is a carbon backbone, with a small number of nitrogen and sulfur molecules thrown in.

It has been shown in a number of studies to improve nitrogen balance.

After cleaning, the insulator should be allowed to dry for several hours at low humidity before use or be dried using dry nitrogen.

The ammonia nitrogen is the main organic pollutant. At present, the river has not been polluted by the heavy metal yet.

For mycelial growth, sucrose and amidulin were the optimum carbon source, whereas gallium nitrate was the optimum nitrogen source.

New developments in flux chemistries for lead-free pastes do not require nitrogen to achieve good wetting and solder joint integrity.

Nitrogen uptake intensity of Wancan 2 enhanced gradually, and that of Zea mexican presented an odd peak curve.

Plant growth should be expected to be limited by nitrogen (N) and phosphorus (P) availability in most terrestrial ecosystems.

Orchards should, at the time of flower initiation, receive an added application of nitrogen to stimulate flower determination.

Degumming experiment was carried out with the ammonium salt and the nitrate as the nitrogen additive.

DO and pH in a certain changes in the scope the COD removal for basically no major impact, but a greater impact on nitrogen removal.

Low-temperature Globe Valve is mainly used for truncating or connecting the liquid oxygen, nitrogen and other media at low temperature.

The studies indicate that the ultrasonic irradiation is an effective method for the degradation of ammonia-nitrogen from landfill leachate.

Low-temperature Globe Valve is mainly used for truncating or connecting the liquid oxygen, nitrogen and other media at low temperature.

In plants, nitrogen assimilation into amino acids relies on the availability of the reduced form of nitrogen, ammonium.

If the elements concerned are essential to life, this cycle is called a nutrient cycle, e. g. the NITROGEN CYCLE.

The high cost of liquid nitrogen for the cryopreservation of semen often restricts AI use far from cities.

A laboratory procedure was then used to "suck out" the eggs, which were matured with stimulating hormones and frozen in liquid nitrogen.

Appropriate rate of nitrogen promoted plant N uptake and utilization, and plant biomass and yields as well.

The result shows only to blow nitrogen into the ladle from the bottom, the nitrogen content of the steel increases.

They found that turning the air off for a set amount of time maximized nitrogen and organic compound removal.

It was an adaptation of Wilson's cloud chamber, filled with nitrogen gas.

While nitrous oxide is a powerful greenhouse gas, when it's burned as rocket fuel, the only byproducts are hot oxygen and nitrogen.

If you put additional nitrogen into a water system, you change the type and quantity of life that water can support.

The liquid nitrogen may be stored in a small , dedicated cylinder near a machine, or in a supply tank that would serve multiple machines.

Liquid nitrogen adsorption technique was used to obtain pore properties of activated carbon from Coke Powder based Activated Carbon by KOH.

If it is supplied mainly by reduced nitrogen, the small cells would ultimately in in interspecific competition.

Among the tested carbon and nitrogen sources in Czapek liquid medium, galactose and ammonium were the most favorable for mycelia growth.

the main form of inorganic nitrogen in sediments was of ammonia, and the submerged plant cannot change this case.

Nitrogen is a common impurity in the crystal of diamond and also one of the predominant elements to affect diamonds performance.

A customer at a Shell station in Boston, Mass. Shell uses nitrogen enriched gasoline to help keep engine parts clean.

Summer may be ending but a good scoop of liquid nitrogen ice cream can be enjoyed year-round.

Summer may be ending but a good scoop of liquid nitrogen ice cream can be enjoyed year-round.

The invention relates to a method and a system for monitoring total phosphorus and total nitrogen of water quality on line.

Plans include using liquid nitrogen to chill a body to -196 Celsius, so it is brittle enough to be broken into small pieces for disposal.

SCR reduces oxides of nitrogen, the smog precursor known as NOx, by injecting urea periodically into the exhaust system.

Interestingly, the void plays a crucial role: the N-V center is quite different from a single nitrogen atom without a neighboring vacancy .

The compound semiconductor contains at least nitrogen.

The Company is a private joint-stock enterprises, are liquid nitrogen container industry emerged a new army.

The main gaseous pollutants from automobile exhausts, nitrogen dioxides and carbon monoxide, are the major air pollutants in the city.

FERTILIZERS. NITROGENOUS FERTILIZERS CONTAINING SYNTHETIC ORGANIC NITROGEN. DETERMINATION OF THE TYPES OF NITROGEN.

Ammonium nitrogen and nitrogen oxides are toxic to methanogenic bacteria, however, their toxicities can be decreased through domestication.

Ammonium nitrogen and nitrogen oxides are toxic to methanogenic bacteria, however, their toxicities can be decreased through domestication.

Currently nitrogen fertilisers are used to supplement these soils, which can be costly and cause ecological problems.

Marine dead zones form when nitrogen and phosphorus pollution concentrates in near-coast waters through a process called eutrophication.

however , carbon and nitrogen stored in plants were influenced by growth and development , and their allocation in tissues would be changed.

Experts have played down the dangers, arguing that the isotope of nitrogen known as nitrogen-16 lasts for only five seconds.

diazo: Relating to or containing a pair of bonded nitrogen atoms, one of which is also bonded to an aromatic hydrocarbon.

Total inorganic nitrogen levels also went into significant decline after 2002, particularly in the eastern part of the Harbour.

However, a constant relationship between pyrrolic nitrogen composition and absolute migration distance of an oil should not be expected.

Mulholland and his collaborators found that the filtering ability of streams couldn't keep pace with the flow of nitrogen pollution.

Finally, the Rio de la Plata deposits nitrogen and iron-laden sediment into the ocean just north of the area shown in the image.

Some oil companies are adding nitrogen to their gasoline. But does it cause pollution as well as boost performance a bit?

It might be caused by the application of K enhancing the metabolism of nitrogen, that promoted the increase of yield with dilution effect .

In some cases, up to 70 percent of the nitrogen in the foliage of streamside shrubs and trees is of salmon origin.

If it were not for oxygen and nitrogen in the air, no man could live on the earth.

This paper deals with the law of organics, TSS and ammonia nitrogen removals by treatment with two-stage biological aerated filter tank.

The best extinguishing method requires large amounts of liquid nitrogen (LIN) to provide a non-reactive environment and act as a heat sink.

The calculator starts with a graph showing the amount of nitrogen pollution produced by the average person.

Today roughly half the nitrogen atoms in an average human body have come through an ammonium factory.

Their heavy labor is the cause of a complete cycle of nutrients like carbon, nitrogen and sulfur which we need.

There were 15 liquid nitrogen containers with planks broken. They were examined by the ship's personnel on duty.

There were 15 liquid nitrogen containers with planks broken. They were examined by the ship's personnel on duty.

The ammonia is an importance of nitrogen vegetable the fertilizer synthesize an ammonia industry is a foundation chemistry industry of a.

Atmospheric nitrogen deposition has become one of the main input items in red soil areas of farmland nitrogen balance.

A coiled tubing string is generally used to apply the treatment, which involves running to depth while pumping high-pressure nitrogen gas.

Idle equipment usually suffered severe corrosion. The traditional fill of nitrogen or diesel oil often failed to provide good protection.

The invention discloses an ammonia nitrogen adsorbent and a preparation and application method thereof.

The project practice proves that the replacement scenario of natural gas-nitrogen-air is an economical, feasible, reliable and safe method.

PRODUCTS USED IN AGRICULTURE. FERTILIZERS. DETERMINATION OF NITROGEN CONTENT IN CLASS A NITROGENOUS FERTILIZERS.

Micro screens, nana-titanium oxide, UV light are integrated in a tank for ammonia, nitrogen and sludge removal to save both space and cost.

Nitrogen is one of the necessary nutrient elements for crop growth and yield formation.

Nitrogen is one of the necessary nutrient elements for crop growth and yield formation.

Ionic liquid is also known as room temperature molten salts, which consists of nitrogen-containing organic cations and inorganic anions.

More immediately, fertilizers used in farming have injected vast amounts of nitrogen and phosphorus into regional environments.

Nitrogen injection being used to enhance oil recovery in many oilfields, particularly in overthrust fault.

Increased expression of this or substantially similar genes can produce plants with improved nitrogen utilization and increased yield.

Nitrogen as a plant nutrient is treated in a great number of publications.

The rest comes from a variety of sources, including hydrofluorocarbons (HFCs), black carbon (soot), methane and nitrogen compounds.

There is plenty of nitrogen in the air but it cannot be absorbed directly by the plants.

Nitrogen application combined with phosphorus application significant influence alkaloids concentration and Total alkaloids yield.

Nitrogen oxides releases directly by supersonic aircraft into the stratosphere contribute directly to the depletion of the ozone layer.

Nitrogen oxides releases directly by supersonic aircraft into the stratosphere contribute directly to the depletion of the ozone layer.

Nitrogen is one of the most important nutrients, known as the life element, it has the close relationship with crop yield and quality.

Symbiotic nitrogen fixation of legumes with azotobacteria was a hot topic of scientific research, but less focus on alpine meadow community.

They learned that it is the only body in the solar system besides Earth where nitrogen is the most abundant atmospheric gas.

Ship operations emit nitrogen oxides, sulfur dioxide, particulate matter, and hazardous pollutants into the air.

Purge the total system with nitrogen gas for replacing CO in the system.

Amine: Any of a class of nitrogen-containing organic compounds derived, either in principle or in practice, from ammonia (NH3).

Human waste may even be better than cow feces for compost, she added, since our meatier diets contain more plant-boosting nitrogen.

She told them nitrogen forms most of the Earth's air; What's neutron ; the nervous system is the network of nerves in the body.

Gas chromatography employ inert gas, commonly Nitrogen, to carry the volatile substances through the column.

Gas chromatography employ inert gas, commonly Nitrogen, to carry the volatile substances through the column.

When substitution (or transfer) of a halogen occurs onto a nitrogen atom, a relatively reactive N-halo organic compound results.

It was supposed that zeolite decreased the ammonia volatilization in composting mainly by the adsorption of ammonium nitrogen.

Denitrification is an important process for the removal of fixed nitrogen from the water column of the Bering shelf and the Chukchi shelf.

Do not over-fertilize the yucca. Too much nitrogen can prevent the plant from blooming.

As this gas passes through a solution of chemicals called amines, the carbon dioxide is absorbed but the nitrogen is not.

This might be the main reason that it caused death that the ammonia nitrogen waspoisonned. 3.

Liquid nitrogen is stored, shipped and handled in several types of containers, depending upon the quantity required by the user.

The key point for the pollution control of eutrophication of the Water Body is to reduce the content of nitrogen and phosphorus in water.

Among the alder's valuable ecological contributions is its capacity to fix nitrogen in nitrogen-deficient soils.

Among the alder's valuable ecological contributions is its capacity to fix nitrogen in nitrogen-deficient soils.

Gaseous nitrogen is shipped and stored in high-pressure cylinders, tubes, or tube trailers depending upon the quantity required by the user.

Winter wheat production process to determine the reasonable application of nitrogen efficiency of resource use, realize the nitrogen.

Remaining base in red mud was directly used to remove nitrogen compounds in the leachate by the chemical method.

The danger of nitrogen-16 is an issue only for plant workers and operators because its half-life is only seven seconds.

The invention discloses a nitrogen-sulfur-containing boric acid ester compound and a method for preparing the same.

Small nitrogen machine works with the pressure swing adsorption nitrogen machine works the same, mainly used in food packaging.

Air travel is an environmental disaster. As well as carbon dioxide, planes emit nitrogen oxide, another nasty gas.

The experiment method of the measurement nanoparticles specific surface areas by the nitrogen adsorption method is investigated.

Carbon monoxide, carbon dioxide, nitrogen oxides can be released in case of fire.

By and large, the main nitrate sources of QUR are the soil organic nitrogen, fertilizer and those comprehensive effects.

The flux coatings major task is to vaporize and form a shielding gas to protect the weld puddle from nitrogen, hydrogen and oxygen.

Sometime fish eat the algae, but then they poop, and the nitrogen sinks to the bottom in the fish poop.

Nitrogen has greater hardening ability with certain elements than with others, hence, special nitriding alloy steels have been developed.

Reactive nitrogen emissions from agriculture are the most intractable as they come from many diffuse sources.

The stone can be used for to clean to discard aquatic and total ammonia nitrogen.

Areas of its research include organic nitrogen, ammonia concentrations, aquatic food webs, and global nitrogen budget.

Except some important parameters are measured, it is found that the operating stability of Argon is better than that of Nitrogen.

Livestock farming is one of the biggest causes of nitrogen pollution, it adds.

They say it could also be used to recover nitrogen from groundwater beneath fertilized farm fields.

The sorbent prevents spills and splashing of the liquid nitrogen while it does allow for a slow release of coolant.

Has strong fermentation kinetics over a wide temperature range and relatively low nitrogen demands .

The nitrogen cycle is destoyed. Nitrate has become one of the most common environmental pollution factors in many parts of the world.

Free amino acid nitrogen was analyzed during autolysis as an indicator of hydrolysis degree and sensory evaluation was conducted.

The U. S. smallpox viruses, which include samples from Britain, Japan and the Netherlands, are stored in liquid nitrogen.

the fermenting liquid , and diacetyl , bitterness , - nitrogen , - glucan in product beer could be measured by the use of such technique.

Nitrogen, which, makes up about 78% of the Earth's atmosphere, is an inert gas but it has more reactive forms.

Ammonia selective catalytic reduction (SCR) of nitrogen oxide is the only industrialized flue gas DeNOx technology.

The problem was rendered extremely difficult by the extraordinary inertness of the nitrogen, which refuses to combine even with oxygen.

It was also indicated that the anodic gas species was mainly nitrogen by vapor phase chromatograph.

The invention relates to a mutual prodrug and a preparation method thereof based on paclitaxel and nitrogen mustard.

Chemical analysis of steels. Determination of nitrogen content. Molecular absorption spectrophotometric method.

Such blooms do not occur when nitrogen or phosphorus or both are present in very limited amounts.

The effects of annealing and nitrogen as a diluting gas on the electromigration resistance of deposited copper film were also investigated.

Thus prepared adsorbent is useful for the separation and purification of nitrogen and argon from its mixture with oxygen.

A well-stimulation treatment in which a gas, usually carbon dioxide or nitrogen, is mixed with water and acid and pumped down a well.

Such intercropping is also a natural way of fertilizing: The legumes growing at the base of the taller sorghum add nitrogen to the soil.

The alternative is to liquefy the hydrogen at great expense and transport it in road tankers refrigerated with liquid nitrogen.

Through the determination, identify the best carbon and nitrogen coupled reaction conditions.

Starches and derived products. Determination of nitrogen content by the kjeldahl method. Spectrophotometric method.

As the casing is sealed, the freezing injury of operators and the volatilization waste of liquid nitrogen can be avoided.

A type of cement used in a cement job that is made of a mixture of cement slurry and nitrogen in the gas state.

Using nitrogen and helium as working gases, experimental investigation of pressure driven gas flows in a microchannel was conducted.

Warming and nitrogen deposition had interaction on the decomposition rate of Leymus chinensis and Phragmites communis litter.

Ettinger himself also intends to be placed in liquid nitrogen when he dies.

"You have less nitrogen available for loss if it's being used where you want it, in the plant, " Johnson says.

and the nitriding atmosphere is ammonia and propane gas or other gas or liquid which can generate nitrogen atoms and carbon atoms.

Nitrogen (N) and phosphorus (P) are the two nutrients most often associated with mismanagement and non-point source pollution.

PRODUCTS USED IN AGRICULTURE. DETERMINATION OF NITROGEN CONTENT IN CLASS C NITROGENOUS FERTILIZERS.

The blood samples of mice were collected for the analysis of glycosylated serum protein and blood urea nitrogen as well as lipid levels.

The relation between the start pressure and the consumed amount of liquid nitrogen is studied and the optimum start pressure is obtained.

The developing process of a suit of certified reference materials of nitrogen cast iron for spectrum analysis was introduced.

Our bodies need protein, and proteins contain nitrogen. The air we breathe has plenty of nitrogen to satisfy our needs.

Conclusions Liquid nitrogen cryotherapy combined with conventional western medicine treatment has prominence effect.

The chip can be cooled with liquid nitrogen or even liquid helium, but this requirement complicates the apparatus considerably.

It was initially thought that the early Earth's atmosphere would have freed up nitrogen to bond with other elements.

Meat, meat product and fishery products - Determination of nitrogen content and calculation of the protein content - Kjeldahl method.

Contaminated Environments: Chemical and Ecosystem Ecology. Biogeochemical cycling of carbon, nitrogen, sulphur and iodine.

Along with nitrogen and phosphorus, potassium is one of three primary nutrients needed by plants.

Nitrogen and phosphorus removal mechanism in subsurface wastewater infiltration system treating domestic wastewater was studied.

It was reported that TWO-STEP-PROCESS is one economical and effective ways to eliminate nitrogen oxide in plant discharge air.

The Compressed Gas Association (CGA) recommends three different connections for nitrogen depending on the pressure of the container.

Milia in regressing plaques of mycosis fungoides: Provoked by topical nitrogen mustard or not?

Overmuch input of chemical fertilizer (nitrogen and phosphorous ) and pesticide is the main source of the agriculture non-point pollution.

the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria.

Surface active agents - Determination of primary, secondary and tertiary amino nitrogen - Potentiometric titration.

The report says government efforts to control emissions of reactive nitrogen from combustion sources have been more successful.

'A nitrogen bath is quite similar to a deep fryer: The end result is something crunchy, crispy, ' says Mr. Robertson.

Similar stories could be told about land, overfishing and carbon and nitrogen emissions to the atmosphere.

Nitrogen fertilizer sources subject to ammonia volatilization losses are urea, urea-ammonium nitrate solutions, and anhydrous ammonia.