Resumo das últimas postagens
Natal 2012
*FELIZ NATAL!* *É nosso desejo para toda nossa família nuclear e estendida (parentes, amigos, colegas, profissionais que nos têm assistido, empregados, companheiros de web ligados ou não a redes sociais...)* *São tantos aos quais pretendia enviar uma mensagem pessoal, para cada um, mas sei que não vou conseguir. Por garantia já vou deixando esta por aqui.* *Que a imagem de minha esposa, companheira e colega de mais de 61 anos seja portadora de nossos votos e nosso abraço.* *(Foto feita pela Psicóloga Daniella Turkienicz em 5 dezembro de 2012)*
exercise aging
Aerobic exercise boosts brain power in elderly December 17, 2012 [image: Prefrontal Cortex] Evidence for the importance of physical activity in keeping and potentially improving cognitive function throughout life was found in an open-access literature review in Psychonomic Bulletin & Review by Hayley Guiney and Liana Machado from the University of Otago, New Zealand. Cognitive functions such as task switching, selective attention, and working memory appear to benefit from … more…/.../
Orgins of life
The algorithmic origins of life 1. Sara Imari Walker1,2,3⇓ and 2. Paul C. W. Davies2 +Author Affiliations 1. 1NASA Astrobiology Institute, Mountain View, CA, USA 2. 2BEYOND: Center for Fundamental Concepts in Science, Arizona State University, Tempe, AZ, USA 3. 3Blue Marble Space Institute of Science, Seattle, WA, USA 1. e-mail: sara.i.walker@asu.edu Next Section Abstract Although it has been notoriously difficult to pin down precisely what is it that makes life so distinctive and remarkable, there is general agreement that its informational aspect is one k... mais »
Five senses - five years
IBM reveals five innovations that will change our lives within five years The era of cognitive systems: when computers will, in their own way, see, smell, touch, taste and hear December 18, 2012 IBM announced today the seventh annual “IBM 5 in 5” — a list of innovations that have the potential to change the way people work, live and interact during the next five years, based on market and societal trends as well as emerging technologies from IBM’s R&D labs. This one is focused on cognitive systems./.../
Cancer urine test
Earlier cancer diagnosis by detecting biomarkers in urine Nanoparticles amplify tumor signals, making them much easier to detect December 19, 2012 These nanoparticles created by MIT engineers can act as synthetic biomarkers for disease. The particles (brown) are coated with peptides (blue) that are cleaved by enzymes (green) found at the disease site. The peptides then accumulate in the urine, where they can be detected using mass spectrometry. (Credit: Justin H. Lo) Specific proteins secreted by cancer cells circulating in the bloodstream could help diagnose cancer earlier, but the q... mais »
Neural Sight organization
First map of how the brain organizes everything we seeDecember 20, 2012 These sections of a semantic-space map show how some of the different categories of living and non-living objects that we see are related to one another in the brain’s “semantic space” (credit: Shinji Nishimoto, An T. Vu, Jack Gallant/Neuron) How do we make sense of the thousands of images that flood our retinas each day? Scientists at the University of California, Berkeley, have found that the brain is wired to organize all the categories of objects and actions that we see, and they have created the first intera...mais »
Cell ontology
A new ‘network-extracted ontology’ model of the cell Turning vast amounts of genomic data into meaningful information about the cell is the great challenge of bioinformatics, with major implications for human biology and medicine December 20, 2012 Part of the network-extracted ontology (NeXO) hierarchical ontology of genes, cellular components, and processes derived from large genomic datasets. The ontology is shown as a tree, with nodes indicating terms and edges indicating hierarchical relations between terms. Node sizes indicate the number of genes assigned to a term. Node colors ... mais »
life span
Mayo Clinic study unmasks regulator of healthy life span Promising target for aging disorders and cancer December 20, 2012 A new series of studies in mouse models by Mayo Clinic researchers uncovered that the aging process is characterized by high rates of whole-chromosome losses and gains in various organs, including heart, muscle, kidney and eye, and demonstrate that reducing these rates slows age-related tissue deterioration and promotes a healthier life span. “We’ve known for some time that reduced levels of BubR1 are a hallmark of aging and correspond to age-related conditions, i... mais »
Magnetismo
MIT researchers discover a new kind of magnetism ‘Quantum spin liquid’ could have applications in new computer memory storage December 21, 2012 *[+]* MIT physicists grew this pure crystal of herbertsmithite in their laboratory. This sample, which took 10 months to grow, is 7 mm long (just over a quarter-inch) and weighs 0.2 grams. (Credit: Tianheng Han/MIT) MIT researchers have demonstrated experimentally the existence of a fundamentally new kind of magnetic behavior called a *quantum spin liquid* (QSL),adding to the two previously known states of magnetism. *Ferromagnetism* — the simp... mais »
Opens-Source
a free, open-source medical journal Are you med-Cureus? December 21, 2012 Stanford neurosurgeon John Adler, MD, has launched Curēus, a new open-source medical journal that leverages crowdsourcing to make scientific research more readily available to the general public. Leveraging the power of an online, crowd-sourced community platform (readers can rate material based on the article’s quality), Curēus promotes medical research by offering tools that better serve and highlight the people who create it, resulting in better research, faster publication and easier access for everyone, a... mais »
Changed the World
100 Diagrams That Changed the World*By: Maria Popova* *A visual history of human sensemaking, from cave paintings to the world wide web.* Since the dawn of recorded history, we’ve been using visual depictions to map the Earth, order the heavens, make sense of time, dissect the human body, organize the natural world,perform music, and even concretize abstract concepts like consciousness and love. *100 Diagrams That Changed the World* (*UK*; *public library*) by investigative journalist and documentarian *Scott Christianson* chronicles the history of our evolving understanding of the w... mais »
in a drop of blood
Pocket test measures 50 things in a drop of bloodDecember 21, 2012 V-chip assay (credit: The Methodist Hospital Research Institute and MD Anderson Cancer Center) A new device about the size of a business card could allow health care providers to test for insulin and other blood proteins, cholesterol, and even signs of viral or bacterial infection all at the same time — with one drop of blood. Preliminary tests of the V-chip, created by scientists at The Methodist Hospital Research Institute and MD Anderson Cancer Center, were published by *Nature Communications*. “The V-Chip could ma... mais »
Family Christmas
Our Family Christmas, RescindedBy HEATHER HAVRILESKYPublished: December 21, 2012 Comment Enlarge This ImageSeveral years ago, my mother announced that she was spending Christmas in Egypt with friends. I flew home anyway, alone, and spent two days making homemade pierogies and sauerkraut and bread for the traditional Carpatho-Rusyn meal we always have on Christmas Eve. At 10 p.m., my sister had an hour off from her rounds at the hospital. She came home and we ate. Then she left, and I did the dishes. Illustration by Holly Wales Enlarge This Image Whitney Pastorek Heather Havrilesky Y... mais »
Chreasters...
One Nation Under God?By MOLLY WORTHENPublished: December 22, 2012 Enlarge This Image THIS week millions of “Chreasters” — Americans who attend church only on Christmas and Easter — will crowd into pews to sing carols and renew their vague relationship with the Christian God. This year, there may be fewer Chreasters than ever. A growing number of “nones” live in our midst: those who say they have no religious affiliation at all. An October Pew Research Center poll revealed that they now account for 20 percent of the population, up from 16 percent in 2008. Valero Doval Avoiding church ... mais »
Cancer
Drugs Aim to Make Several Types of Cancer Self-Destruct C.J. Gunther for The New York Times Dr. Donald Bergstrom is a cancer specialist at Sanofi, one of three companies working on a drug to restore a tendency of damaged cells to self-destruct. By GINA KOLATA Published: December 22, 2012 For the first time ever, three pharmaceutical companies are poised to test whether new drugs can work against a wide range of cancers independently of where they originated — breast, prostate, liver, lung. The drugs go after an aberration involving a cancer gene fundamental to tumor growth. Many ... mais »
NLRP3 & Alzheimer
NATURE | LETTER - Print - Email - Share/bookmark - - NLRP3 is activated in Alzheimer’s disease and contributes to pathology in APP/PS1 mice - Michael T. Heneka, - Markus P. Kummer, - Andrea Stutz, - Andrea Delekate, - Stephanie Schwartz, - Ana Vieira-Saecker, - Angelika Griep, - Daisy Axt, - Anita Remus, - Te-Chen Tzeng, - Ellen Gelpi, - Annett Halle, - Martin Korte, - Eicke Latz - & Douglas T. Golenbock - Affiliations - Contributions - Corresponding authors Nature (2012) Alzheimer’s diseas... mais »
Ray Kurzweil & Google
Will the Willy Wonka of technology will help Google usher in a sci-fi future? [image: Geoff Duncan] December 20, 2012 By Geoff Duncan [image: Ray Kurzweil / The Transcendent Man] *Google has hired famed inventor and futurist Ray Kurzweil as director of engineering. Will he be a figurehead, or a driving force at the company?* Internet giant Google has made a very high-profile hire, bringing famed inventor and futurist Ray Kurzweil on board as the company’s new director of engineering. Interestingly, the announcement wasn’t made by Google but by Kurzweil himself on his own site, perhaps... mais »
The secrets of your second brain - 17 December 2012 - New Scientist
*Gut instincts: The secrets of your second brain - life - 17 December 2012 - New Scientist*
Aging Doctors
Aging Doctors Come Under Greater Scrutiny By Sandra G. Boodman, Kaiser Health News Published: December 16, 2012 Ephraim Engleman, MD, University of California San Francisco. *Photo credit: Mike Kepka/San Francisco Chronicle/Corbis* A distinguished vascular specialist in his 80s performs surgery, then goes on vacation, forgetting he has patients in the hospital; one subsequently dies because no doctor was overseeing his care. An internist who suffered a stroke gets lost going from one exam room to another in his own office. A beloved general surgeon with Alzheimer's disease continues t... mais »
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