As the horizons of technology expand, the real world is shrinking into a Global Village; Nanotechnology is the new area of interest in technology. Nanotechnology is an umbrella term that covers many areas of research dealing with objects that are measured in nanometers or billionth of meter. It is a hybrid science combining engineering and chemistry. The goal of nanotechnology is to manipulate atoms individually and place them in a pattern to produce a desired structure. Nano-sized machines called assemblers, that can be programmed to manipulate atoms and molecules at will, would be used to build consumer goods. Some nanomachines called replicators, would be programmed to build assemblers. Nanotechnology would enable creation of new generation of computer components with enormous storage capacity. But the greatest impact of nanotechnology could be the medical industry. Patients would drink fluids containing nanorobots programmed to attack and reconstruct the molecular structure of cancer cells and viruses to makes them harmless. Nanorobots could also be programmed to perform delicate surgeries. For environmental clean-up, airborne nanorobots could be user programmed to rebuild the thinning ozone layer. Contaminants could be automatically removed from water sources, and spill could be cleaned up instantly. Nanotechnology was first introduced in 1959, in a talk by the Nobel Prize-winning physicist Richard Feynman, entitled "There's Plenty of Room at the Bottom", Feynman proposed using a set of conventional-sized robot arms to construct a replica of themselves, but one-tenth of the original size, then using that new set of arms to manufacture an even smaller set, and so on, until the molecular-scale is reached. if we had many million or billions of such molecular-scale products built from individual molecules - a "bottom-up manufacturing" technique, as opposed to the usual technique of cutting away material until you have a completed component or product -"top-down manufacturing".

Posted in Very interesting Scientific articles | Comments Off on Nanotechnology

Shun Cloning : Scientists Must Speak Out

Scientists say evidence is mounting "that creating healthy animals through cloning is More difficult than they had expected." So began a front-page story in the New York Times (Marching 25), highlighting the frustrations of animal cloners, and the chance that person cloning whitethorn prove technically inconceivable. Those worried about the ethics of individual cloning have greeted this as good news, a sign that the slippery slope is leveling come out of the closet. Unfortunately, the new obstacles English hawthorn prove less than insurmountable in the hanker tally--and in bioengineering, the yearn running often proves surprisingly short. For those whose doubts about ergonomics ar expressed by the philosopher Leon Kass as "the wisdom of repugnance," it is no meter to relax: The slope Crataegus laevigata soon steepen once Thomas More. In cloning, a cellular cell nucleus from the grownup to be cloned is injected into an testis from which the karyon has been removed. As it turns , the environment of the unfertilized testicle, hijacked for cloning purposes, is able-bodied to "reprogram" big nuclei, returning their DEOXYRIBONUCLEIC ACID to a naive, pseudo-embryonic state. As the orchis develops, it follows the familial blueprint of the full-grown from which the core was derived, essentially producing an identical twin of that individual. But at that place problems. When Ian Ian Wilmut and his co-workers produced the cloned sheep Doll, they caught about biologists unawares because it was thinking out of the question to clone a mammal. Frogs had been cloned Sir Thomas More than twenty-five years ago, but many biologists cerebration that a phenomenon termed "imprinting" would prevent mammalian cloning. Imprinting confers "memory" on a developing cell, helping to distinguish fully grown skin cells, for instance, from heart, liver, and blood cells. Experiments in mice suggested that imprinting permanently altered the DESOXYRIBONUCLEIC ACID, making it unimaginable to derive a feasible embryo from an grown core group. changed all that. Still, the cloning of mammals is a precarious enterprise. himself acknowledged that cloning was ineffective and fraught with grotesque loser, and he strongly advised against trying to clone world. Even the just about experienced researchers to generate executable clones only 2 to 5 percent of the metre. The failures appear to stem from the imprinting phenomenon, which had been discounted post-: the hereditary absolution conferred by the ball turns to be at best, and memories persist in the of cloned embryos, interfering with their development. This point was made by MIT developmental biologist Rudolf Jaenisch during testimony earlier a House subcommittee on Master of Architecture 28, and in a forceful article he co-authored with , "Don't Clone Humans!" (Science, MArch 28). As Jaenisch and others stressed ahead Congress, the high unsuccessful person rate in animal cloning should make somebody cloning unthinkable. The proponents of cloning, a motley crew of UFO cultists and fringe physicians, argue that they volition succeed in human race where experts have failed in animals. Their position is, of course, untenable. For now, soul cloning testament probably end up prohibited. However, in that location is a danger in arguing against cloning on technical grounds alone: Once the procedure is perfected, it implicitly becomes ethically permissible.

Posted in Very interesting Scientific articles | Comments Off on Shun Cloning : Scientists Must Speak Out

Hurricane Aftermath Health Safety Tips

With the record-setting hurricane season of 2005, it is never too soon to begin preparing for the 2006 season, which has been predicted to have an above average number of hurricanes. EHA has over 25 years of experience with mold related matters and can assist you with assessment of the property and your health concerns. EHA’s teams of qualified professionals are ready to respond immediately with offices in West Palm Beach and Tampa Bay, Florida. Please feel free to contact us at 561-965-0250 in West Palm Beach, 813-236-8220 in Tampa Bay or via our corporate offices in Baltimore at 800-969-1441. As public health consultants, our first concern is for the health and safety of the people who suffer through these unfortunate events. The potential for disease outbreaks and serious injury loom far after the threat of a major hurricane. As such, people affected by major weather events of catastrophic size must first be prepared to deal with the following conditions so critical to human survival including food, water and shelter. * Infectious diseases and chemical exposure – Diseases such as typhoid and cholera are associated with the consumption of contaminated food and water supplies due to flooding of sewers and sewage systems. Viral and parasitic diseases such as Hepatitis A and Cryptosporidiosis can also become major threats to the public’s health. Contaminated flood waters may also harbor toxic chemicals including pesticides and petroleum by-products. * CO- Carbon Monoxide intoxication – Precautions should be taken to ensure that adequate ventilation exists whenever running any gasoline powered engine such as, large pumps, generators or vehicles. Last year there were deaths associated with carbon monoxide intoxication in Florida. * Safe food and water – Often the most critical two items essential to survival, safe food and water are often in short supply during major catastrophes. Food that has not been properly refrigerated should not be consumed. Whenever possible, drink only boiled or bottled water. If boiling water is not practical, authorities recommend the use of chlorine bleach at a concentration of1/8 teaspoon per gallon of water, but be advised that some pathogenic organisms are resistant to this chemical treatment. * Mosquito transmitted diseases – Diseases such as Encephalitis and West Nile Virus can be of serious concern. Since most hurricanes occur during the summer months, when temperatures can be sweltering, the best line of defense is a mosquito repellant containing DEET or Picariin. Long after a hurricane has passed, after basic survival has been assured and upon return to your property, the threat of mold looms. For this reason, we've listed our Emergency Prevention of Mold Damage & Property Damage recommendations below to help provide you with the first steps you should take to limit mold damage. More information about hurricane-related mold damage and safety tips is available at

Posted in Very interesting Scientific articles | Comments Off on Hurricane Aftermath Health Safety Tips

8th Grade Science Fair Project Ideas

There are many different 8th grade science fair project ideas that you could use for your next assignment, these are used depending on the type of project that you wish to create and they are basically categorized in the sciences of physics, chemistry, biology, computer science, social sciences and environmental sciences. Each of your projects should have a guideline of how to use it and how to prove its efficiency. You should know that many interesting actual projects have developed from good ideas for science projects. The best part about a science fair project is that you may have your very own group of science fair topic ideas and then you just need to select one and start working on a project that will allow you to compete in this activity that have formed part of education for a long time. A very good method for acquiring 8th grade science fair project ideas will be described in the next few lines if you're interested in understanding the basics of a science fair project. The first thing that you should do is to pick one topic of the classification which was stated above, and once you have accomplished that you need to select one of the different subtopics that can be applied to the general topic that you just selected. It is very interesting to ask yourself a question about how things work, and if there are some questions that you cannot answer then those are very good ideas for science projects. Another good technique for selecting science fair topic ideas will be to read the newspaper and watch television, see what interesting aspects of life are developing nowadays and try to explain them on a science fair project. That way you will get outstanding 8th grade science fair project ideas and with them you will be capable of winning a wonderful prize. And you will have an excellent group of ideas for science projects. Keep in mind that for selecting the best 8th grade science fair project ideas your selection must be not only a great question, but a successful project also implies that you would be giving the answer by performing an experiment. So it is very important that you prepare yourself with all of the needed materials once you have reduced to one selection from your complete group of good ideas for science projects. Try to make the project by yourself, ask as little assistance as you can and you will feel that your 8th grade science fair project ideas were incredible and that you accomplished everything by yourself; it will leave you with a sense of accomplishment that cannot be equaled if you win with the help of others.

Posted in Very interesting Scientific articles | Comments Off on 8th Grade Science Fair Project Ideas