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Energy exists in several forms such as heat, kinetic or mechanical energy, light, potential energy, electrical, or other forms. There are also two types of energy sources: renewable and nonrenewable. Renewable sources like wind, solar and water energy are constantly renewed. Nonrenewable energy sources like oil, gas and coal cannot be replaced and are in limited supply.

Energy conservation can be achieved through increased efficient energy use, in conjunction with decreased energy consumption and/or reduced consumption from conventional energy sources. Energy conservation can result in increased financial capital, environmental quality, national security, personal security, and human comfort. Individuals and organizations that are direct consumers of energy choose to conserve energy to reduce energy costs and promote economic security. Industrial and commercial users can increase energy use efficiency to maximize profit.

Developing countries are countries that behind the level of economic development of the North.

Sources of energy in developing countries

Modern energy sources, such as electricity and petroleum-based fuels, generally provide only a small part of the energy use of poor rural people.

Energy Use in Developing Countries

Developing countries produce 43% of the world’s energy but account for only 29% of total energy consumption. However, energy consumption varies greatly between these countries. Developing countries within Asia (China, India, Korea, Thailand and Indonesia), for example, consume 60% of all energy in the developing world.

However, Third World countries are rapidly increasing energy consumption in 21th century as they develop their economies. This growth in energy consumption could seriously affect the environment, not only in the developing countries, but globally, IEA warns in its recent report Energy in Developing Countries.

Producing the energy required to meet this increasing demand will have substantial environmental effects, says IEA. While developing countries now consume proportionally less energy per person than industrialized countries do, their expansion is far more rapid. Improved efficiency would allow countries to meet the rising energy needs of their growing economies without expanding energy production to ecologically dangerous levels.

Energy Efficiency in Developing Nations

Several survey reports show that nearly 50% of the total energy consumption in developing countries is by the industrial sector of these countries. The primary energy consumption rate in the developing countries has been increasing at an average of 5% every year whereas in the developed countries, this rate is between 0.5% -0.6%. More than this, the dilemma faced by the national governments of these developing countries is that if they reduce energy consumption, the growth of the industrial sector will slow and reduce the rate of economic development and they do not afford alternative sources of energy use such as solar energy, wind energy, nuclear energy and its high expensive to them.

Another Important factor related to energy consumption in developing countries is of population growth.

In such situations, increasing energy efficiency is most important factor. At the same time ESCOs (Energy Service Companies) are also playing a major role in reducing energy consumption in developing countries.

Energy Production and Environmental Impacts

In turn, this energy is extracted from rural areas-either as fossil fuels or renewable energy-and can have significant impacts on the rural economy and environment.

Used wisely, energy can provide environmental benefits; if misused it can also exact substantial environmental costs to the land, water, and air. The environmental costs of extracting and transporting the major energy resources used in developing countries today are coal, oil; gas, hydroelectricity, biomass, and other forms of energy are discussed below.

Coal has significant environmental effects throughout the fuel cycle.

Oil and gas production have similar environmental impacts.

Biomass can be produced on energy farms and, in many instances; the costs to produce bio-energy can be much lower than the world oil price. Bio-energy production can provide decentralized energy sources, helping to spur rural development in developing countries and minimize migration to urban areas.

The burning of biomass generates large amounts of air pollution in developing countries. However all these systems needs higher capital to produce for efficiency energy and thus developing countries are lacking such huge capital and are mostly concentrating for fuelwood of energy use.

Nuclear Energy

Nuclear energy currently makes little contribution to the overall energy requirements of developing countries. Seven developing countries produce uranium:

A total of 28 developing countries had research reactors.

Solar, Wind, and Other Renewable Energy

Geothermal energy, though still a very small part of total energy supply in developing countries, is being used in several Latin American and Asian developing countries and in Kenya.

Energy Conservation in Developing Countries

Energy conservation is also important because consumption of nonrenewable sources impacts the environment as well as it high cost for developing countries to produces. Specifically, our use of fossil fuels contributes to air and water pollution. Renewable energy technologies range from solar power, wind power, and hydroelectricity to biomass and bio-fuels for transportation.

Energy conservation in developing countries its not easy task, its need for introduce technological efficiency, political arrangements, provision aids (from developed countries) to use alternative energy sources that reduces costs and environmentally friendly for example Brazil has transfer from oil consumption to ethanol, also it needs for personal behavior changes that contribute to reduce of energy consumption at household level. Change attitude for personal towards energy consumption it’s very challenging for most developing countries, because it needed awareness and participation for personal as long as most people in developing countries are lacking knowledge about the effect of energy to human health and environment.

To conserve renewable energy in developing countries, there is a need efficiency technology as replacement for traditional of consuming energy as their counterpart did (developed countries).

A more sustainable energy policy would also need to improve energy efficiency and that will help developing countries to avoid or minimize such consequences. Developing countries must take the lead in charting new energy courses for themselves.

• Reform and re-direct energy subsidies.

• Seek developed-country support for the effective transfer of advanced energy technologies, while building the indigenous human and institutional capacity needed to support sustainable energy technologies.

Increased pressure from environmental activists has urged the Environmental Protections Agency (EPA) to require businesses to obtain permits for development.

• Clean Air Act permits

Lithium

Lithium is easily adsorbed by plants and the amount of lithium in plants varies widely. While the lithium surface becomes coated with a mixture of lithium hydroxide, lithium carbonate, and lithium nitride (Li3N), lithium hydroxide represents a potentially significant hazard because it is extremely corrosive.

Many reactions of lithium may cause fire or explosion when exposed to Lithium. Inhalation of the substance may cause lung oedema. Heating the element may cause violent combustion or explosion. Upon heating, toxic fumes are formed. It occurs in the ocean and in salt lakes as sodium chloride, NaCl, and less often as sodium carbonate, Na2CO3, and sodium sulfate, Na2SO4. Sodium is the second most abundant element after chlorine (as chloride ions) dissolved in seawater. The most important sodium salts found in nature are sodium chloride (halite or rock salt), sodium carbonate (trona or soda), sodium borate (borax), sodium nitrate and sodium sulfate. Sodium salts are found in all water bodies. Contact of sodium with water, including perspiration causes the formation of sodium hydroxide fumes, which are highly irritating to skin, eyes, nose and throat.

Most potassium occurs in the Earth’s crust as minerals, such as feldspars and clays. Minerals mined for their potassium are pinkish and sylvite, carnallite and alunite. Today most potassium minerals come from Canada, USA and Chile. Potassium is a key plant element. Potassium can affect us when breathed in. Skin and eye contact can cause severe burns leading to permanent damage. ;

Rubidium is a widely distributed element, ranking about 16th in order of abundance of the elements in Earth’s crust. The two elements are found together in minerals and soils, although potassium is much more abundant than rubidium. Plant will adsorb rubidium quite quickly. If rubidium ignites, it will cause thermal burns. Rubidium readily reacts with skin moisture to form rubidium hydroxide, which causes chemical burns of eyes and skin. Obtain medical attention immediately. In case of skin exposure remove material and flush with soap and water. Get medical attention promptly.

Cesium occurs naturally in the environment mainly from erosion and weathering of rocks and minerals. Radioactive isotopes of cesium may be released into the air by nuclear power plants and during nuclear accidents and nuclear weapons testing. Cesium in air can travel long distances before settling on earth. In water and soils most cesium compounds are very water-soluble. Radioactive cesium does have a chance of entering plants by falling on leaves.

Humans may be exposed to cesium by breathing, drinking or eating. In air the levels of cesium are generally low, but radioactive cesium has been detected at some level in surface water and in many types of foods. The amount of cesium in foods and drinks depends upon the emission of radioactive cesium through nuclear power plants, mainly through accidents. When contact with radioactive cesium occurs, which is highly unlikely, a person can experience cell damage due to radiation of the cesium particles.

Francium

Francium is.

Is there color or turbidity in the samples? Instead of lining up samples, you are pouring aliquots into sample cups that are placed on an auto sampler tray. Instead of transferring a known amount of sample to a cuvette, the discrete analyzer does. Instead of adding reagents and mixing, the discrete analyzer does. Instead of starting a timer, the discrete analyzer does.

The discrete analyzer pipettes, dilutes, adds reagents, mixes, calibrates, measures, calculates, and reports all for you. Drift is common in flow analyzers because the peristaltic pump tubing delivers reagents by proportion. The discrete analyzer delivers the exact amount of sample and reagent every time. The discrete analyzer has a fixed path length if the discrete analyzer does not transfer color-developed sample to another cuvette, or flow cell, for measurement.

As mentioned previously, daily calibration is required for continuous flow methods because flow methods proportion the reagents and sample using a peristaltic pump. Those pump tubes are changing with time changing the relative proportion of sample and reagents. Many methods written for manual spectrometers merely say, “analyze a check standard with each sample set”.

A manual method uses more reagent and sample volume because we, as humans, cannot work easily with small volumes. A flow system uses more reagent than a discrete analyzer because a flow instrument is continuously pumping reagent through the system.

Discrete analyzers that measure the sample absorbance within the same container that the reaction occurred generate less waste than instruments that wash the vessel, or use a flow cell. In fact, adequately rinsing a flow cell requires significant rinsing between samples making the waste volume generated essentially equivalent to that of a micro-flow Segmented Flow Analyzer, or Low Flow Flow Injection Analyzer.

The discrete analyzer uses significantly less reagent, and generates significantly less waste than manual methods.

The discrete analyzer measuring the absorbance of a color reacted sample contained in individual cuvettes.

A discrete analyzer dispenses, reacts, incubates, and measures all within the reaction cuvette without transferring to a flow cell. Analyzers that transfer to a flow cell are not “true” discrete analyzers, but instead, are hybrids between flow and discrete.

All discrete analyzers have reaction segments. Some analyzers do chemical reactions in a cuvette segment and then transfer the reacted sample to a flow cell. This type of analyzer is a hybrid of discrete and flow, and not a true discrete analyzer. A true discrete analyzer reacts and measures the sample within the optical cuvette. Some analyzers wash the optical cuvette between tests. Other discrete analyzers utilize disposable optical quality cuvettes.

This residual contamination can come from preceding samples, or more likely, from the reagents used in processing the preceding samples.

Analyzers that use a flow cell still react samples in some sort of cuvette. If the discrete analyzer has 100 sample positions and 200 reaction cuvettes, then the analyzer can run 100 samples for 2 tests each. The discrete analyzer with the flow cell must rinse the flow cell between each sample, and rinse vigorously between each test. Consider that a two-channel flow analyzer can analyze 100 samples for two tests each in less than half the time as a discrete analyzer with a flow cell. Also, consider that the flow analyzer generates no more waste than the discrete analyzer with a flow cell. If the required testing is a lot of samples for one or two tests it makes more sense to use a flow analyzer.

Reagents can interfere as cross contamination between samples. The discrete analyzer easily and rapidly analyzes multiple tests on single sample solutions. Only disposable individually contained reactions ensure that there is no interaction between samples or tests.

If not, you will at least rinse it in between samples, and possibly with sample prior to transferring your sample aliquot to the sample container. This is to avoid carryover between samples. A flow analyzer uses an auto sampler.

A discrete analyzer also uses a probe; however, it operates differently than flow analyzers. A discrete analyzer’s level detect mechanism ensures that the probe immerses into the sample or reagents no further than necessary to withdraw the required sample aliquot. The probe then washes itself on the outside at the wash station and pushes the sample or reagent out into the sample cuvette. A flow analyzer does not know. A flow analyzer could end up aspirating from empty sample cups or empty reagent bottles all night long and think it is still running samples. A discrete analyzer with level detection prevents this. The discrete software calculates the volume of reagents and samples based on the height of liquid. The software continuously monitors sample and reagent volumes and will not continue the test when it detects that reagents or samples have “run out”.

The sampling depth on a flow analyzer is usually adjustable by the user and is usually towards the bottom of the sample vial. On a discrete analyzer, the depth the probe immerses in a sample solution is a result of programming or instrument design. The depth sampled on the OI Discrete analyzer is determined by the level detect mechanism and the sample aliquot required for the test. A flow analyzer would not as readily detect this loss or gain because it samples from the bottom of the sample cup.

A discrete analyzer reacts sample in a heated cup that is open to allow the probe to dispense samples and reagents. Since discrete analyzer reactions are occurring in individually contained cuvettes, the time delay between reagent additions on discrete analyzers is limited only by software. Unless you have an added auto-dilutor attached to your flow analyzer, you will still be diluting standards and over calibration samples. Auto-dilution is an integral function of a discrete analyzer. The dilutions can be preset during sample table entry if you know that the samples need to be diluted.

The discrete analyzer method is selected by mouse click when scheduling analyses on the sample tray.

Think of those short holding time samples.

If everything is to run on the discrete analyzer, then collect your samples in a vial that fits on the discrete analyzer. Discrete analyzers are very simple to use requiring minimal software training.

Discrete Analyzers in the Environmental Laboratory

What China can learn from Switzerland’s political situation

While Switzerland may not be perfect in this area, China could emulate the Swiss government’s commitment to fighting corruption. This regime is still currently running the government. Many individuals in China are suffering as the country has been marred by protests against the government. The Chinese government needs to change the way they operate by instituting true democracy.

• Swiss people’s party
• Christian Democratic people’s party
• Social Democratic party
• Free Democratic party

In relation to the Tibetan crisis, the Chinese government could borrow a leaf from Switzerland.

What China can learn from Switzerland’s economic situation

The reason why these inequalities arose was that unlike the Swiss government, the Chinese governed has a direct approach to controlling the country’s economy. China can adopt the Swiss government’s approach to economic governance. (Economy watch, 2008) The Swiss government rarely makes abrupt policy changes that would destabilize the entire macro-economic system.

What China can learn from Switzerland’s social situation

In terms of China’s social system, there are a number of pointers that China could borrow from Switzerland. For instance, they ought to relax government control in religion.; Time and time again, the Chinese government has been accused by international media and local critics of its excessive religious control. The Chinese government seems to be operating in fear of religious leaders claiming that these leaders can destabilize the government or even overthrow it. This example illustrates just how much the Swiss government is committed to religious freedom.

The Chinese government can also learn from such an experience by creating systems that enhance racial or religious accountability.

What China can learn from Switzerland’s environmental situation

China could learn from the Swiss environmental laws because the latter government has carbon limits for various emitting sources. The Swiss government has been very keen on this and their approach could serve as lesson to the Chinese government in the future. Socially, China can learn from Switzerland by curbing religious discrimination. Economically, China can learn from Switzerland by separating politics from the economy as is the case today in China. Lastly, the Chinese government ought to be more vigilant about its environmental polices like their counterparts in Switzerland.