The National Renewable Energy Laboratory, Golden in Colorado (NREL) was letting go of contractors and workers with fine abandon. But it can be supposed that the laboratory understood the message, for not long after the State of Union Address, they were all re-hired. In fact, the President?s second speech was delivered at the NREL itself. There can be said to be undisputed public support for tax breaks, research grants and financial incentives for research and development of sources of alternative energy, through federal backing.
The NREL is the chief component of the ?virtual? National Bioenergy Center, which is a center with no actual office. The NREL was established exclusively to achieve the objectives of the United States alternative energy and so the Department of Energy can advance. Dan Arvizu, the Director of the laboratory, says that the staff scientists and field researchers sanction the objectives of the critical market towards accelerating research whether it be scientific innovation or feasible alternative energy solutions. He goes on to say that NREL?s technology and research development goals are the roots of this strategy. These goals start from the understanding of renewable energy resources, to the translation of these to renewable fuel and electricity and finally to the utilization of these in homes, vehicles and commercial buildings. The laboratory, federally backed, directly helps achieve the objectives for unveiling new alternative fuels for improving our economy and powering our lifestyle.
The NREL has been established to provide expertise in several areas pertaining to the development of alternative energy. It directs research and development initiatives in renewable sources of electricity including geothermal power, biomass power, wind power and solar power. It also steers the research and development of vehicle-powering fuels like biodiesel fuels, hydrogen fuel cells and biomass. It also aims at supervising an integrated system-engineering plan that includes activating alternative energy in buildings, delivery systems and electrical grids, and infrastructure transportation. The laboratory also targets the analysis and development of the objectives of alternative energy through economics, structuring the portfolio of alternative energy investment, and market planning and analysis.
In addition, a Technology Transfer Office furnishes the NREL. This office maintains a team of engineers and laboratory scientists who make a living by the application of their expertise including various technologies developed. The competence of the staff and facilities of NREL can be observed by the number of collaborative projects as well as licensed technologies shared by the laboratory and their partners, both private and public.

Ocean Thermal Energy Conversion (OTEC) is a potential alternative energy source that needs to be funded and explored much more than it presently is.

There are three kinds; closed, open and hybrid cycle of OTEC.

?Closed Cycle? uses a low-boiling point liquid such as, for example, propane to act as an intermediate fluid. The OTEC plant pumps the warm sea water into the reaction chamber and boils the intermediate fluid. This results in the intermediate fluid’s vapor pushing the turbine of the engine, which thus generates electricity. The vapor is then cooled down by putting in cold sea water.

?Open Cycle?. The sea water itself is the driver of the turbine engine in this OTEC format. Warm sea water found on the surface of the ocean is turned into a low-pressure vapor under the constraint of a vacuum. The low-pressure vapor is released in a focused area and it has the power to drive the turbine. To cool down the vapor and create desalinated water for human consumption, the deeper ocean’s cold waters are added to the vapor after it has generated sufficient electricity.

?Hybrid Cycle? There are actually two sub-theories to the theory of Hybrid Cycling. The first involves using a closed cycling to generate electricity. This electricity is in turn used to create the vacuum environment needed for open cycling. The second component is the integration of two open cyclings such that twice the amount of desalinated, potable water is created that with just one open cycle.

Developing Nuclear Power as Alternative Energy

Nuclear power plants are very ?clean-burning? and their efficiency is rather staggering. Nuclear power is generated at 80% efficiency, meaning that the energy produced by the fission reactions is almost equal to the energy put into producing the fission reactions in the first place. There is not a lot of waste material generated by nuclear fission?although, due to the fact that there is no such thing as creating energy without also creating some measure of waste, there is some. The concerns of people such as environmentalists with regards to using nuclear power as an alternative energy source center around this waste, which is radioactive gases which have to be contained.

Solar Energy Collecting as an Alternative Energy Source

Solar powered electricity generation is certainly good for the environment, as this alternative form of producing energy gives off absolutely zero emissions into the atmosphere and is merely utilizing one of the most naturally occurring of all things as its driver. Solar collection cells are becoming slowly but surely ever more practical for placing upon the rooftops of people’s homes, and they are not a difficult system to use for heating one’s home, creating hot water, or producing electricity. In the case of using the photovoltaic cells for hot water generation, the system works by having the water encased in the cells, where it is heated and then sent through your pipes.

Low to moderate glycemic index carbs produce a small but steady rise in insulin levels (healthy) as opposed to high glycemic index carbs that produce a large and rapid rise in insulin levels (unhealthy).

Low to moderate glycemic index carbohydrates provide slow release of energy that supplies continuous fuel for the body and brain and for the working muscles. Their slow rate of digestion and absorption puts less stress on the insulin producing cells in the pancreas.

Misconceptions about the Glycemic Index abound and people often have a hard time putting the principles into daily dietary practice.

A glycemic rating over 70 is high. Medium runs from 70- 56. Under 55 is considered low.

Many factors affect the glycemic index of a carbohydrate. In general, carbohydrates that are more processed and ground more finely with the bran separated out will have a higher glycemic index.

Guidelines for choosing lower glycemic index breads, cereals, crackers, chips and other carbohydrate packaged products:

Limit your intake of finely ground, soft, puffed and flaky products. Finely ground flour products ? both 100% whole wheat and white flour such as soft whole wheat or white flour bread, crackers, breakfast cereals will have a high glycemic index. If you can mush it together and form a ball out of it? the glycemic index is high.

Anything “puffed” such as puffed wheat, rice or corn cereals ? even whole wheat ones ? usually has a high glycemic index. If something has been processed into small fine particles that can be crushed into crunchy crackers and cereals ? the glycemic index is probably going to be high ?even those made out of good whole grains. Most crackers, packaged cold cereals and chips have a glycemic index in the 70s, 80s and 90s.

Instead, choose dense, grainy, chewy products. Foods with intact fiber will be more “dense” and chewy and less flaky and light. If the fiber is intact the product will have a lower glycemic index. Grainy, dense breads are more likely to have a lower glycemic index. Choose coarse breads with at least 50% intact kernels.

Sourdough breads, because of the acids produced by the fermentation of their yeast starter culture, have much slower rates of digestion and absorption.

You can also eat whole grains in their natural state. Whole intact grains that have been softened by soaking and cooking will have a low GI value. For example, cooked barley has a GI value of only 25. Cooked whole wheat has a GI value of 41. But choose old fashion whole grains and not the “instant” varieties ? any thing that has been “instantized” is probably going to have a higher glycemic index.

Fruits and Vegetables:

Choose barely ripe fruits and vegetables for a lower glycemic index. Overly ripe fruits and vegetables have higher sugar content and a higher glycemic effect than just ripe foods.

Tropical fruits, such as mango, papaya, pineapple, and cantaloupe tend to have higher values than temperate fruits such as apples and oranges. But all fruits are OK. Even the higher glycemic index fruits like pineapple will usually have a GI rating in the 60s. Just don’t eat only watermelon (GI 72).

Almost all vegetables are low to moderate glycemic index and are great to eat. The poor carrot has been greatly maligned as having “too much sugar” but actually has an average glycemic index of only 47.

Potatoes:

Most potato varieties have a high glycemic index due to the presence of high amounts of amyl pectin that is quickly digested.

Tiny new white and red bliss potatoes have a lower GI value than normal varieties. Russet baked potatoes have the highest glycemic index (an average of 85) and mashed potatoes an average of 92.

The glycemic impact of potatoes can be lessened by eating smaller portions and varying your diet with alternatives such as sweet potato (GI- average 61 – the starch in sweet potatoes is amylose ? more slowly digested and absorbed) or yams (GI average 37).

Rice vs. Pasta:

Pasta gets a bad rap. Pasta gets blamed for all sorts of maladies because it routinely gets categorized as a bad carbohydrate. “They” say to cut out the pasta and eat rice.

Well, it just so happens that pasta has a low to moderate glycemic index (30-55) that results in a slow, steady release of energy in your body.

Pasta made with semolina is made from cracked wheat and not finely ground flour so it has a moderate glycemic index. Furthermore, pasta is unique in its physical make up. The reason for its slow digestion and steady release of energy is “the physical entrapment of ungelatinized starch granules in a sponge-like network of protein molecules in the pasta dough. ” That is something you don’t need to understand to get the good news that pasta can be good for your energy. Yippee!

But always serve pasta al dente. If you overcook pasta it gets soft and swollen and you have fully “gelatinized” those starch granules and turned pasta into an energy drainer.

Almost all kinds of pasta have a lower glycemic index than most varieties of rice – even brown rice (a glycemic index over 70 is typical because almost complete “gelatinization” of rice starch takes place during cooking). And pasta has more protein than rice or potatoes. Overall semolina pasta is a good energy food and can be part of a high-energy diet. Remember though ? a serving is just 1/2 cup and keep variety in your diet by not eating pasta any more that once every four days.

Rice varieties such as Jasmine and short grain varieties (even short grain brown rice) that have a lot of amylopectin tend to have higher glycemic index GI (high 70s to 139). You will know these higher amylopectin rice varieties because they tend to stick together after cooking (an example of the “if you can mush it into a ball and it sticks test”).

High amylose content rice varieties such as Basmati, Uncle Ben’s converted rice and long grain brown rice have a low glycemic index. If the rice grains stay separate after cooking it is more likely to have a lower glycemic index (GI 50s and 60s)

Great alternatives to rice include pearled barley, buckwheat, bulgur, couscous, or noodles – all moderate to low GI.

Simple steps to lower the glycemic effect of your diet:

To get good glycemic control you don’t have to eliminate all high glycemic index foods ? just be sure and have at least one low glycemic carbohydrate at each meal.

Overly cooked foods are predigested have higher sugar content and a higher glycemic index. Avoid over cooking your foods.

Fats slow down the digestion of starches. The higher the fat content of a food the lower its glycemic index. This is why the glycemic index of potato chips is lower than that of a baked potato. To lower the glycemic effect of a high glycemic food such as a French baguette add a little fat such as olive oil, good quality organic butter or some nut butter.

When you do eat a high GI index carbohydrate include protein with it. The protein will slow down the rate of digestion and can cut the glycemic index effect by about one third.

The higher the acid content of a food the lower its glycemic index. Acids in foods slow down stomach emptying, thereby slowing the rate at which the starch can be digested. Include some acidic foods in your meals like vinegar, lemon juice, limejuice, some salad dressings, and pickled vegetables. A side salad with your meal will help to keep blood glucose levels under control. Four teaspoons of vinegar in a salad dressing or about four teaspoons of lemon on your food or in your water reduces the glycemic effect by about one-third.

Include more legumes in your diet. Legumes are super nutritious, high fiber low glycemic index foods (GI ranging from 13 to 59). If you want to ensure stable long lasting blood sugar control legumes are your friends.

The glycemic index is only one of many markers you can use to choose nutritious foods. It is not the only marker to use. Often it is better to have a higher glycemic index food such as baked potato than a lower glycemic index food such as potato chips. Consider not only the glycemic index of a carbohydrate but also the nutrient value of the food when making your choice.

Even with these guidelines it can sometimes be hard to tell the glycemic effect of a carbohydrate. But when you are not carrying a reference book around with you these guidelines will help you take better care of your health and well-being.