Wednesday, September 30, 2009

25th Birthday Quotes For Friends

Toxic Effects of Technology-Based Nanoparticles

Today published in the conference came a note that addresses the possible toxic effects of technology produced from nanoparticles. This line of research should be focus of increased attention to possible risks to health and the environment that the technology produces short, medium and long term. As previously mentioned in other notes, there are currently a large number of products whose negative effects have not been fully explored or have been consciously ignored by the economic gains generated by technology. Should be questioning the growing "need" of modern society by the production of materials that "enable" or "improve" our quality of life and routine. What we can certainly say for certain is the steady accumulation of waste generated annually whose negative environmental effects are magnified in similar proportions.

Full story: Experts warn

expert on toxicity of products made nanoparticles
Note: La Jornada, Alfredo Valadez Rodríguez, 30.09.2009

Nanotechnology is opening new and complex ethical and social challenges, when found at the frontiers of atomic and molecular manipulation of matter "virtually no no difference between the biotic and abiotic material. " This basic fact puts scientists on the threshold of what will be the true creation of artificial living beings having said researcher William Foladori, founder and president of the Latin American Nanotechnology and Society.

The Uruguayan-born specialist, doctor in economics from the University Nacional Autonoma de Mexico (UNAM), a member of the International Nanotechnology and Society, gave a lecture at the Zacatecas Autonomous University, where he spoke about the findings and problems that humanity is facing nanotechnology. Foladori warned that labs in Europe and Asia has begun to see that the nanoparticles, developed for use in many industrial and commercial processes, have high toxicity.
confirmed that there are many products on the world market for cosmetics companies like L'Oreal, and mobile devices such as Phone, made from nanotechnology, without warning consumers about the risks they face.

The same applies to Samsung, DuPont and Bayer, who produce and market "innovative" products, dangerous to health and the environment, said the expert, who has taught at universities in Honduras, Uruguay and Brazil, and researcher Columbia University.
Moreover, Foladori said, we are on the verge of a new "industrial and social revolution," because the application of nanotechnology will have "an enormous impact on the social division of labor." Even, he warned, "many branches of the world economy as we know them today will be reduced or disappear."

Nanotechnology has laid the foundations for a new biotechnology platform on which will be developed countless techniques and production methods. "We are witnessing the creation of artificial life has already been done and has been patented to meet specific actions, such as the production of bacteria for certain functions in the cleaning industry."

can also think of development of an internal combustion engine that does not require oil and whose life would be three or four times longer than the common one. Or in the development of a fabric, the garment industry, in addition to expelling the smell of perfume not crease and does not require washing, it cleans itself. However, increased unemployment, poverty and marginalization, he said.

For example, he said, there are products such as wool, cotton and linen are being replaced by industrial and commercial in the coming years of fibers that exceed in quality, durability and cost. As a result, avoid producing million head of sheep, and thousands of millions of hectares of agriculture will be devoted to cotton in the world, but the impact will be enormous economic, social and political. Moreover, the toxicological aspect is known and unknown, "Many of the big pharmaceutical hide."

Foladori said: "According to the experiments, we know that carbon nanotubes cause cancer in the stomach" and that silver nanoparticles have significantly increased allergic responses. He cited that there is a toothbrush from Oral-B in Brazil to warn about the use of nanotechnology, but in Mexico is sold without informing him. Foladori said "all major brands of cosmetics using nanoparticles that could be absorbed through the skin and cause toxic and allergic reactions still unknown."

Thursday, September 17, 2009

Converter .ipa To .jar

Relationship between Intelligence and Curiosity

Note published: News @ the University of Toronto, Melissa McDermott, 08/09/1914. "Researches discover the first-ever link entre intelligence and curiosity"

pimer Researchers discover link between intelligence and curiosity: The results may lead to development of drugs that enhance learning.

In an article published Sept. 10 in the respected journal Neuron, Professor John Roder, University of Toronto, Department of Molecular Genetics and Fellow in the Lunenfield and Bechara Saab doctoral student at the same institute investigated the interaction of two proteins in the region of the brain called the dentate gyrus (one of the three parts of the hippocampus, which plays an important role in long-term memory and spatial coordination).

"Dr Roder and Bechara Saab have made important discoveries in a brain region that has been poorly studied in the past," said Dr. Jim Woodgett, Director at the Lunenfeld. "The relationship molecular discovery holds promise for the future of cognitive therapy."

Particularly in the study, the neuronal calcium receptor-1 (NCS-1), a protein known to affect memory in worms and is associated with bipolar disorder and schizophrenia in people, increased its activity one and a half times in the dentate gyrus in mice. This slight overexpression increased the ability of brain cells to change the way we communicate, and in mice caused an increase in upper memory to perform complex tasks and a significant increase in exploratory behavior, ie the curiosity.

Since exploratory behavior is modified only in a "safe", the investigadorescreen they have discovered a brain region that creates curiosity, and a model that explains how brain activity leads to curiosity. They also discovered that curiosity and spatial memory are altered when given a benign drug that blocks the binding protein NCS-1 dela with dopamine receptor type 2 (primary target of antipsychotics) in the dentate gyrus. "We now know that some of the molecules and brain regions that regulate learning and memory also control curiosity, we can now develop drugs laboratory that improve cognition in humans - which means a potential benefit for the future" said Saab. "However, we can immediately put into practice the knowledge generated indicating that the building encourages curiosity, intelligence, and vice versa."

The study was developed in collaboration with other scientists Toronto and Switzerland. It is also funded by the Canadian Institutes of Health Research.

cienciacolectiva.blogspot.com translation and adaptation by
original Note: http://www.news.utoronto.ca/lead-stories/researchers-discover-the-firstever-link-between-intelligence-and -curiosity.html