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ABFM NEWS - Física Médica Geral
 
Bubble-fusion researcher punished for misconduct.
 
According to an investigation report released on 18 July, Taleyarkhan|s misconduct involved two falsifications of the research record... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
Heart of ageing enzyme revealed.
 
The part of the enzyme that controls the timing mechanism of cellular ageing has been revealed. The X-ray crystal structure offers insights into the ageing process of normal cells, and may provide a safer method for treating up to 90% of human cancers... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
Isotope shortage could delay cancer treatments.
 
"Technical glitches at a Dutch nuclear reactor that produces medical isotopes could lead to rationing of medical tests and treatments across Europe. The High Flux Reactor in Petten is the world|s second-largest manufacturer of medical isotopes, and has been offline since last week... " [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
ICRP Publication 103: Recommendations of the ICRP.
 
There has been considerable discussion over several years, via the ICRP web site and at national and international meetings, of earlier draft versions of this report. The effectiveness of these interactions is seen in the considerable changes that have taken place in the evolving drafts... [+ leia mais]
Colaborador: Laura Natal Rodrigues.
Fonte: Radiation Protection Dosimetry.
 
 
Shedding Light on Nighttime Brights.
 
Space scientists have uncovered the cause of the magnetic disruptions that instigate auroras, the atmospheric light displays in the polar regions of the Northern and Southern hemispheres... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Science.
 
 
Elastic Scattering of Electrons and Positrons (ICRU Report 77)
 
Theoretical methods and experimental techniques for studying elastic scattering of electrons and positrons with atoms and molecules, and in condensed materials, are reviewed. The emphasis is in the range of intermediate and high energies, from a few kiloelectron volts upwards, where the static-field approximation provides an accurate description of elastic collisions... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: ICRU.
 
 
Medpedia: Online Encyclopedia of Medicine.
 
A group of American medical schools is working on a project to essentially collect and organize all medical knowledge in a Wikipedia-like form. Access to MedPedia will be available to all, but editing rights will be limited to M.D.|s and Ph.D.|s in relevant fields of research. Harvard, Stanford, the University of Michigan, and Berkeley will kick off the site with initial content and work with the rest of the medical community to make it comprehensive... [+ leia mais]
Colaborador: Guilherme Agreli.
Fonte: Medgadget.
 
 
The cancer biomarker problem.
 
Genomic technologies offer the promise of a comprehensive understanding of cancer. These technologies are being used to characterize tumours at the molecular level, and several clinical successes have shown that such information can guide the design of drugs targeted to a relevant molecule... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
Imaging in the era of molecular oncology.
 
New technologies for imaging molecules, particularly optical technologies, are increasingly being used to understand the complexity, diversity and in vivo behaviour of cancers... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
Hair test cuts breast cancer errors.
 
The test bombards strands of hair with X-rays from a synchrotron particle accelerator. In hair from healthy people, the pattern produced by the X-rays is a series of arcs, while in people with breast cancer a distinctive ring is superimposed on top of the arcs... [+ leia mais]
Colaborador: Bruno Taigo Rossi.
Fonte: New Scientist.
 
 
Right Again, Einstein.
 
As if his reputation needed cementing, astronomers have confirmed Albert Einstein|s status as a supergenius once more. Studying a unique pair of pulsars--small and extremely dense leftovers from supernova explosions--researchers have measured an effect that was predicted by Einstein|s 92-year-old general theory of relativity... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Sciencenow.
 
 
TL-efficiency—Overview and experimental results over the years.
 
For several decades, thermoluminescence detectors (TLDs) have been widely used in environmental, personal and medical dosimetry... [+ leia mais]
Colaborador: Bruno Tiago Rossi.
Fonte: Radiation Measurements.
 
 
Superconductivity: Prospecting for an iron age.
 
"Different material options for high-temperature superconductivity— conduction of electricity with little or no resistance at |practical| temperatures — have arrived. Iron compounds are the latest thing... " [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
Harmonization of internal dosimetry procedures in Latin America—ARCAL/IAEA project.
 
Under the auspices of the Regional Coordination Agreement for Latin America, representatives of the eight member states have participated in a project to improve radiological protection for workers exposed to unsealed sources of radiation… [+ leia mais]
Colaborador: Bruno Tiago Rossi.
Fonte: Radiation Protection Dosimetry.
 
 
Silicon chip filters out cancer cells.
 
IT|S harder than finding a needle in a haystack. Unusual or rare cells, such as those that cause the spread of cancer, are difficult to isolate from thousands of other cells in a sample... [+ leia mais]
Colaborador: Fabio Strina Juliasz.
Fonte: New Scientist.
 
 
Nuclear physics: A neutrino s wobble?
 
Periodic oscillations have been observed in what should be straightforward exponential decay curves of two radioactive isotopes. An entirely mysterious phenomenon, its proposed cause seems equally exotic... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
Stamp out common virus to beat brain cancer - New strategy could help beat tenacious brain tumours.
 
Cancer experts have suggested a new way to tackle particularly tenacious brain tumours known as glioblastomas. Attacking a common virus often found in these cancers may halt their growth, say researchers… [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: NatureNews.
 
 
Physics is set spinning.
 
“It was not simply out of a spirit of contradiction that I exposed a light source to a magnetic field,” so said Pieter Zeeman, on receiving the 1902 Nobel Prize in Physics with Hendrik Lorentz… [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Nature.
 
 
Nanoparticle lights up at the site of cancer.
 
A new nanoparticle can multitask as a drug courier and a delivery reporter by glowing when it dumps its cargo inside tumour cells. The technique could allow doctors to see exactly which cells have successfully received a drug - if it gets approval for use in humans… [+ leia mais]
Colaborador: Fabio Strina Juliasz.
Fonte: New Scientist.
 
 
Cellphone scanner could screen for cancer.
 
Cellphones have long been touted as a way to bridge the developing world|s digital divide. Now doctors in remote hospitals might be able to use them to detect tumours… [+ leia mais]
Colaborador: Bruno Tiago Rossi.
Fonte: New Scientist.
 
 
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