The problem of total loss oil consumption, however, remains a cause of high hydrocarbon emissions.

When high RF emission levels from other sources became a potential problem ( such as with the advent of microwave ovens ), certain frequency bands were designated for Industrial, Scientific and Medical ( ISM ) use, allowing unlimited emissions.

Spread-spectrum clocking avoids this problem by using one of the methods previously described to reduce the peak radiated energy and, therefore, its electromagnetic emissions and so comply with electromagnetic compatibility ( EMC ) regulations.

In order to avoid this problem at temperatures below ), and to reduce ethanol higher emissions during cold weather, both the US and the European markets adopted E85 as the maximum blend to be used in their flexible fuel vehicles, and they are optimized to run at such a blend.

Beside losses from burned and inaccessible coal, these fires contribute to air pollution and considerably increased levels of greenhouse gas emissions and have thereby become a problem which has gained international attention.

In Europe and the U. S. A., stricter emission laws and decline in heavy industries have reduced the environmental hazards associated with this problem, leading to lower emissions after their peak in 1960s.

On the newer 16V engines the camshaft variator is used to enhance the performance / emissions but also might be the source to the common ' diesel noise ' problem often seen on high mileage used models which used the earlier internals of the variator.

* The problem of coordinating bandwidth usage in a battlespace is a significant challenge, when every piece of mobile equipment and human participant becomes a potential source or relay of RF emissions.

To address the problem of inaccuracy engineers at the National Renewable Energy Laboratory combined data from all applicable emissions studies and compiled them into one data set.

Farnsworth addressed this problem with the invention of an " electron multiplier " ( not to confused with contemporary electron multipliers ), a device that increased the number of electrons in a circuit by generating " secondary emissions " of electrons from a pair of opposed surfaces, thus amplifying the electrical signal.

European models, which did not require any emissions equipment, made.

The United States would be required to reduce its total emissions an average of 7 % below 1990 levels ; however Congress did not ratify the treaty after Clinton signed it.

These included major controversy over the United States ' proposal to allow credit for carbon " sinks " in forests and agricultural lands, satisfying a major proportion of the U. S. emissions reductions in this way ; disagreements over consequences for non-compliance by countries that did not meet their emission reduction targets ; and difficulties in resolving how developing countries could obtain financial assistance to deal with adverse effects of climate change and meet their obligations to plan for measuring and possibly reducing greenhouse gas emissions.

Saint Augustine held that male nocturnal emissions, unlike masturbation, did not pollute the conscience of a man, because they were not voluntary carnal acts, and were therefore not to be considered a sin.

A midrash relates that the prophet Elisha did not have nocturnal emissions any time he was a guest in someone's home, and attributes this control as being an attribute of holiness.

James Lovelock's book " Gaia's Revenge " suggests that Gaia has many mechanisms for eliminating civilisations that do harm through greenhouse gas emissions and global warming, but suggests that with increasing heat being received from the sun, Gaia's ability to " bounce back " as it did after the Permian and Cretaceous extinction events, may be increasingly compromised.

The CVCC engine debuted in 1975 and had a head design that allowed for more efficient combustion, and as a benefit the CVCC system did not require a catalytic converter or unleaded fuel to meet 1972 North American emissions standards.

With stricter American safety and emissions standards looming for 1974, Volvo did not see fit to spend the considerable amount that would be necessary to redesign the small-volume 1800 ES.

He did not provide a source for these figures, which are at odds with published projections including the US Energy Information administration, which predicts China's energy related emissions will rise by only 2. 7 % per year to 2020.

But following tightening of environmental regulations, these Ukrainian and Russian-built planes were banned from landing in European airports because they did not meet emissions and noise standards.

Unlike the earlier Act, this statute did not prohibit the colonies from issuing paper money, but it did forbid them from designating future currency emissions as legal tender for public or private debts.

In May 1999, the 1998 emissions standards were met-except for the four-litre version, which did not become compliant until November.

It was only used in 1979 as it did not meet 1980 emissions requirements.

The F40 did without a catalytic converter until 1990 when US regulations made them a requirement for emissions control reasons.

It was not available in the US because it did not meet the United States emissions standards.

After her Master's again under Rutherford she also did a series of experiments to determine the nature of the radioactive emissions from thorium.

Forestry periodical noted that planting forests to mitigate CO < sub > 2 </ sub > emissions was a temporary solution for about 40 years that did not take into account CO < sub > 2 </ sub > emissions from the later harvesting stage.

As of the 2007 model year, Saleen did not recertify the S7TT for EPA emissions, suggesting that manufacture of the United States street-legal version has terminated.

The hope was that by forcing annual emissions testing for California, and denying registration to vehicles that did not pass, drivers would tend to purchase vehicles that would more reliably pass the test.

The 2010 Metrolinx electrification study, which did assume the use of Tier 4 emissions technologies for diesel propulsion options, found that the Georgetown / ARL diesel service would contribute in the order of 0. 2 % to local air pollution and electrification would result in only a small positive effect on local air quality levels.

Often deposition occurs a considerable distance downwind of the emissions, with mountainous regions tending to receive the greatest deposition ( simply because of their higher rainfall ).

Countries that participate and take the option to reduce their emissions from deforestation during a committed period of time would receive financial compensation for the carbon dioxide emissions that they avoided.

They would also be almost impossible to distinguish for normal background RF noise and would not appear like the conventional emissions types Kolchuga is designed to receive and analyse ).

" With total world emissions from fossil fuels growing rapidly, the proportion of fossil-fuel emissions absorbed by the oceans since 2000 may have declined by as much as 10 %, indicating that over time the ocean will become " a less efficient sink of manmade carbon.

Other pollutants, such as benzene and 1, 3-butadiene, are regulated as hazardous air pollutants whose emissions must be lowered as much as possible depending on technological and practical considerations.

Diesel units do not pollute as much as steam trains ; modern units produce low levels of exhaust emissions.

Too much use of brightener will often cause a greening effect as emissions start to show above the blue region in the visible spectrum.

A much discussed source of carbon for recycling into fuel is flue-gas emissions from fossil-fuel combustion where it is proposed be obtainable for about USD $ 7. 50 per ton.

Primarily because of latent high moisture content of brown coal, carbon dioxide emissions from traditional brown-coal-fired plants are generally much higher than for comparable black-coal plants, with the world's highest-emitting being Hazelwood Power Station, Victoria.

The airborne fraction of CO2 from human emissions, the percentage neither sequestered by photosynthetic life on land and sea nor absorbed in the oceans abiotically, has been almost constant over the past century, and that suggests a moderate upper limit on how much a component of the carbon cycle as large as phytoplankton may have declined, if such declined in recent decades.

The sulfates largely result from urban emissions in southern California, borne on the prevailing westerly winds throughout much of the year, and emissions from Arizona ’ s copper smelter region, borne on southerly or southeasterly winds during the monsoon season.

The airborne fraction of CO2 from human emissions, the percentage neither sequestered by photosynthetic life on land and sea nor absorbed in the oceans abiotically, has been almost constant over the past century, and that suggests a moderate upper limit on how much a component of the carbon cycle as large as phytoplankton may have declined, if such declined in recent decades.

Geothermal wells release greenhouse gases trapped deep within the earth, but these emissions are much lower per energy unit than those of fossil fuels.

For continuous high speed highway use these features are much less useful in reducing emissions.

They are also much ' greener ' and produce much less emissions than the original propulsion units.

In 2010, Lee said that global warming would be much more serious than scientists previously thought, and that Taiwanese people needed to cut their per-capita carbon emissions from the current 12 tons per year to just three.

Meanwhile, purpose-designed light trucks had to meet much less stringent requirements for emissions and fuel economy.

The statement references the IPCC's Fourth Assessment of 2007, and asserts that " climate change is happening even faster than previously estimated ; global emissions since 2000 have been higher than even the highest predictions, Arctic sea ice has been melting at rates much faster than predicted, and the rise in the sea level has become more rapid.

A relatively small incremental health risk from a single project is not of much comfort if the area already has a relatively high health risk from other operations like incinerators or other emissions, or if other projects exist at the same time causing a greater cumulative risk or an unacceptably high total risk.

Since its construction, constant emissions of heat and caustic gases have transformed much of the rock into clays ( mostly kaolinite ), iron oxides, sulfur-rich compounds and quartz.

The UCS also acknowledges that nuclear power can reduce greenhouse gas emissions, but maintains that it must become much safer and cheaper before it can be considered a workable solution to global warming ( see nuclear power debate ).

He fell under criticism for rejecting the Kyoto Protocol which would commit the United States to reducing greenhouse gas emissions which are believed by much of the relevant science community to cause global warming.

However, use of a heat pump can make electric water heaters much more energy efficient and lead to a decrease in carbon dioxide emissions, even more so if a renewable source of electricity is used.

The ability to maintain control over the airflow to the fire ( by virtue of the combustion chamber being air-tight ) allows for much greater combustion efficiency ( in other words, more heat for less wood and with fewer emissions ).

Because of its location ( shielded from radio emissions from the Earth ), it has been proposed as the site of a future giant radio telescope, which would be scooped out of the crater itself, much like the Arecibo radio telescope, but on a vastly larger scale.