Do the downloads!! Share!! The diffusion of very important information and knowledge is essential for the world progress always!! Thanks!!
- – – > > Mestrado – Dissertation – Tabelas, Figuras e Gráficos – Tables, Figures and Graphics – ´´My´´ Dissertation #Innovation #Countries #Time #Researches #Reference #Graphics #Ages #Age #Mice #People #Person #Mouse #Genetics #PersonalizedMedicine #Diagnosis #Prognosis #Treatment #Disease #UnknownDiseases #Future #VeryEfficientDrugs #VeryEfficientVaccines #VeryEfficientTherapeuticalSubstances #Tests #Laboratories #Investments #Details #HumanLongevity #DNA #Cell #Memory #Physiology #Nanomedicine #Nanotechnology #Biochemistry #NewMedicalDevices #GeneticEngineering #Internet #History #Science #World
The influence of physical activity in the progression of experimental lung cancer in mice
- PMID: 22683274
- DOI: 10.1016/j.prp.2012.04.006
GRUPO_AF1 – GROUP AFA1 – Aerobic Physical Activity – Atividade Física Aeróbia – ´´My´´ Dissertation – Faculty of Medicine of Sao Jose do Rio Preto
GRUPO AFAN 1 – GROUP AFAN1 – Anaerobic Physical Activity – Atividade Física Anaeróbia – ´´My´´ Dissertation – Faculty of Medicine of Sao Jose do Rio Preto
GRUPO_AF2 – GROUP AFA2 – Aerobic Physical Activity – Atividade Física Aeróbia – ´´My´´ Dissertation – Faculty of Medicine of Sao Jose do Rio Preto
GRUPO AFAN 2 – GROUP AFAN 2 – Anaerobic Physical Activity – Atividade Física Anaeróbia – ´´My´´ Dissertation – Faculty of Medicine of Sao Jose do Rio Preto
Slides – mestrado – ´´My´´ Dissertation – Faculty of Medicine of Sao Jose do Rio Preto
DMBA CARCINOGEN IN EXPERIMENTAL MODELS
Avaliação da influência da atividade física aeróbia e anaeróbia na progressão do câncer de pulmão experimental – Summary – Resumo – ´´My´´ Dissertation – Faculty of Medicine of Sao Jose do Rio Preto
Lung cancer is one of the most incident neoplasms in the world, representing the main cause of mortality for cancer. Many epidemiologic studies have suggested that physical activity may reduce the risk of lung cancer, other works evaluate the effectiveness of the use of the physical activity in the suppression, remission and reduction of the recurrence of tumors. The aim of this study was to evaluate the effects of aerobic and anaerobic physical activity in the development and the progression of lung cancer. Lung tumors were induced with a dose of 3mg of urethane/kg, in 67 male Balb – C type mice, divided in three groups: group 1_24 mice treated with urethane and without physical activity; group 2_25 mice with urethane and subjected to aerobic swimming free exercise; group 3_18 mice with urethane, subjected to anaerobic swimming exercise with gradual loading 5-20% of body weight. All the animals were sacrificed after 20 weeks, and lung lesions were analyzed. The median number of lesions (nodules and hyperplasia) was 3.0 for group 1, 2.0 for group 2 and 1.5-3 (p=0.052). When comparing only the presence or absence of lesion, there was a decrease in the number of lesions in group 3 as compared with group 1 (p=0.03) but not in relation to group 2. There were no metastases or other changes in other organs. The anaerobic physical activity, but not aerobic, diminishes the incidence of experimental lung tumors.
Copyright © 2012 Elsevier GmbH. All rights reserved.Mestrado – ´´My´´ Dissertation – Tabelas, Figuras e Gráficos – Tables, Figures and Graphics – Faculty of Medicine of Sao Jose do Rio Preto BaixarRedefine Statistical SignificanceBaixar
´´We propose to change the default P-value threshold for statistical significance from 0.05 to 0.005 for claims of new discoveries.´´ https://www.nature.com/articles/s41562-017-0189-z Published: Daniel J. Benjamin, James O. Berger, […]Valen E. Johnson Nature Human Behaviour volume 2, pages6–10 (2018)
´´My´´ Monografia – Monograph – Induction of benznidazole resistance in human Trypanosoma cruzi isolates – Indução de resistência ao benzonidazol em isolados humanos de Trypanosoma cruzi – UFTM – Federal University of Triangulo Mineiro – Uberaba
LISTA DE NOMES DE PESSOAS QUE ME DERAM FEEDBACK POSITIVO SOBRE A LISTA DE EMAILS QUE FIZ EM 2015 (PROJETO) – PEOPLE´S NAMES (POSITIVE FEEDBACK ABOUT THE EMAIL LIST I DID IN 2015) – E-MAIL LIST – LISTA DE E-MAILS – PROJECT – PESQUISA -RESEARCH
http://www.google.com http://www.linkedin.com http://www.forbes.com http://www.gmail.com http://www.yahoo.com http://www.harvard.edu http://www.ucla.edu http://www.nobelprize.org http://www.stanford.edu http://www.nasa.gov http://www.mit.edu http://www.caltech.edu http://www.youtube.com http://www.facebook.com http://www.twitter.com http://www.instagram.com http://www.wordpress.com http://www.science1984.wordpress.com http://www.wikipedia.org https://physicsworld.com/a/how-feynman-diagrams-transformed-physics/
Skip to main contentClose MenuBrowse all
- SUBJECT CATEGORIES
- Astronomy and space
- Atomic and molecular
- Biophysics and bioengineering
- Business and innovation
- Condensed matter
- Culture, history and society
- Diversity and inclusion
- Education and outreach
- Environment and energy
- Instrumentation and measurement
- Mathematics and computation
- Medical physics
- Optics and photonics
- Particle and nuclear
- Policy and funding
- Projects and facilities
- ARTICLE TYPES
- EXPLORE PHYSICS WORLD
Open Search Dialog
- LatestExplore all the latest news and information on Physics World
- Research updatesKeep track of the most exciting research breakthroughs and technology innovations
- NewsStay informed about the latest developments that affect scientists in all parts of the world
- FeaturesTake a deeper look at the emerging trends and key issues within the global scientific community
- AnalysisDiscover the stories behind the headlines
- BlogEnjoy a more personal take on the key events in and around science
- EventsPlan the meetings and conferences you want to attend with our comprehensive events calendar
- PeopleMeet the people behind the science
- CareersConsider your career options with valuable advice and insightful case studies
- Opinion and reviewsFind out whether you agree with our expert commentators
- InterviewsDiscover the views of leading figures in the scientific community
- PersonalitiesFind out who’s doing what in industry and academia
- ImpactExplore the value of scientific research for industry, the economy and society
- Business and innovationFind out how recent scientific breakthroughs are driving business innovation and commercial growth
- Education and outreachLearn about novel approaches to educating and inspiring the scientists of the future
- Policy and fundingUnderstand how emerging policy changes could affect your work and career
- Projects and facilitiesFollow the latest progress at the world’s top scientific experiments
- CollectionsExplore special collections that bring together our best content on trending topics
- Covering Climate NowOur contribution to the global media initiative in the run-up to the UN Climate Action meeting
- The science and business of spaceExplore the latest trends and opportunities associated with designing, building, launching and exploiting space-based technologies
- Frontiers in biofabricationLearn how scientists are exploiting bioprinting and biofabrication to create artificial organs and tissues for the medicine of the future
- Nanotechnology in actionThe challenges and opportunities of turning advances in nanotechnology into commercial products
- Supercool physicsExperiments that probe the exotic behaviour of matter at ultralow temperatures depend on the latest cryogenics technology
- Sustainable futuresInterdisciplinary research on local and global environmental challenges, plus solutions for creating more sustainable technologies and societies
- Revolutions in computingFind out how scientists are exploiting digital technologies to understand online behaviour and drive research progress
- Quantum horizonsFind out how a new crop of quantum technologies is set to make waves in the commercial world
- Audio and video
- Audio and videoExplore the sights and sounds of the scientific world
- VideoWatch our specially filmed videos to get a different slant on the latest science
- PodcastsOur regular conversations with inspiring figures from the scientific community
- WebinarsTune into online presentations that allow expert speakers to explain novel tools and applications
(Courtesy: Science Photo Library/Laguna Design)
19 Dec 2019 Robert P CreaseTaken from the December 2019 issue of Physics World, where it appeared under the headline “Paper tools”. Members of the Institute of Physics can enjoy the full issue via the Physics World app.
Feynman diagrams reveal why the tools theorists use are as important as the theories themselves, writes Robert P Crease
Tools can change not only how theorists calculate but also what they calculate about.
As the International Year of the Periodic Table draws to a close, I’m reminded of this lesson through the work of the Swedish scientist Jacob Berzelius, one of the fathers of modern chemistry. Back in the early 19th century, he developed a new tool for writing chemical formula. It involved giving elements simple labels such as Si for silicon – one of four elements Berzelius discovered – along with numbers denoting their proportions. Vinegar, for example, is C2H3O2, though Berzelius used superscripts rather than subscripts. The system is still used today, and we assume that it represents chemicals “as they really are”.
But two decades ago, Ursula Klein, a scholar from the Max Planck Institute for the History of Science in Berlin, pointed out that the tool changed chemistry. It not only organized complex information in the “jungle of organic chemistry” but also transformed the way chemists looked at chemicals. To explain how all this happened, Klein introduced the notion of a “paper tool” – it showed how Berzelius’ notation system transformed ideas about what chemicals were and how to study them, thereby providing chemists with new perspectives, concepts and goals.
The notion of a “paper tool” showed how Berzelius’ notation system transformed ideas about what chemicals were and how to study them, thereby providing chemists with new perspectives, concepts and goals
Klein’s notion of a paper tool has since been applied elsewhere. Michael Gordin, a historian of science at Princeton University in the US, applied the concept to the early history of periodic tables in his 2004 book A Well-Ordered Thing (Basic Books). Meanwhile, David Kaiser – a physicist and historian of science at the Massachusetts Institute of Technology – has used paper tools to explore the impact of Feynman diagrams. As he writes in his 2005 book Drawing Theories Apart: the Dispersion of Feynman Diagrams in Postwar Physics, these illustrations – pioneered by Richard Feynman in the late 1940s and early 1950s – “helped to transform the way physicists saw the world and their place within it”.
Feynman diagrams, you’ll recall, are line drawings that represent mathematical expressions of the behaviour of subatomic particles. Feynman developed them to keep track of calculations of self-energy, or how charged particles interact with their own fields. These calculations are done by perturbation expansions, which work by viewing each self-energy interaction as a small change, or perturbation, of some known state. A perturbation calculation then adds up a series of such small changes.
Unfortunately, keeping track of any corrections beyond the simplest case, let alone adding them all up, makes such calculations forbidding. In work for which he would share the 1965 Nobel Prize for Physics with Shin’ichiro Tomonaga and Julian Schwinger, Feynman said he used the diagrams as a “book-keeping device for wading through complicated calculations”. That was disingenuous; the diagrams did far more than that. Kaiser’s account of this imaging tool reveals at least four different ways in which Feynman diagrams acted as more than a simple tool but transformed particle physics itself.
First, the diagrams required apprenticeship. Feynman diagrams have a deceptive visual simplicity, but even at first physicists did not find them natural or intuitive. They could not spread, Kaiser writes, through the equivalent of “correspondence courses”, in which training happens by sending and receiving information from a distance rather than face-to-face encounters. Instead, Feynman had to tutor colleagues, notably Freeman Dyson, who helped spread the new techniques to a group at the Institute for Advanced Study in Princeton. Members of that cohort, in turn, spread them further. The diagrams required something like “craft skill or artisanal knowledge”, Kaiser writes, and the mentored and often laborious acquisition of techniques of the sort associated with new traditions of painting, fashion or art.
The second transformative impact of Feynman diagrams was that they framed the projects that theorists undertook in a new way. Here again, there are affinities to painting and the way that artists created new approaches to traditions like realism. Growing confidence in the calculations enabled by Feynman diagrams thus reinforced confidence in the diagrams themselves as a tool, thereby in the diagrams’ applications, and so on.
Third, Feynman diagrams are what philosophers of technology call “multistable”, rapidly mutating in their application and structure. In traditional history of science, Kaiser points out, theoretical tools are thought to spread like “batons in a relay race – stable objects that retained their meaning and form as they were passed from one user to another in a growing network”. Feynman diagrams, instead, transformed into tools that could be used not only in high-energy physics, but also in nuclear physics, solid-state physics, gravitational physics and an ever-widening circle of applications. “Improvization and bricolage,” Kaiser writes, “can lead to applications that had never been envisioned by the tool’s inventors.”READ MOREPhysics World’s 2012 Book of the Year
Fourth, Feynman diagrams transformed what physicists conceived as real. In an old story familiar to philosophers of science and technology, tools such as Feynman diagrams not only shaped the practices of those inside the workshop but also came to be taken for granted and seemingly transparent avenues to what appears to be the “real”. Kaiser, again, compares this to traditions in art history that each appear (deceptively) to represent nature to the “innocent eye”.
The critical point
A still more radical lesson of Kaiser’s book concerns not what it says about how Feynman diagrams are used, but what the use of the diagrams says about the nature of theory itself. Theory, Kaiser suggests, is ultimately less important to theorists than the tools that mediate their calculations. Moreover, tools fashioned within one theoretical framework can take on lives of their own, and find new uses even when the original theory, for which they had been drafted, falls out of favour. Theoretical tools, like experimental ones, can outlive the theories they were meant to elucidate.
Want to read more?
Register to unlock all the content on the site
- E-MAIL ADDRESS
Robert P Crease is chair of the Department of Philosophy, Stony Brook University, US and writes a monthly column for Physics World. His latest book is The Workshop and the World: What Ten Thinkers Can Teach Us About Science and Authority (WW Norton)
Discover more from Physics World
- UK-WIDEIOP Teacher Training Scholarships: Institute of Physics
- NORTH WEST ENGLANDCareer Opportunities at Nuclear Technology Education Consortium: NTEC – Nuclear Technology Education Consortium
- SOUTH WEST ENGLANDCareer Opportunities at South West Nuclear Hub: South West Nuclear Hub, University of Bristol
- CONDENSED MATTER | CONFERENCE2020 Physics in Food Manufacturing Conference15—17 January 2020 | Leeds, UK
- IMAGING | SYMPOSIUM2020 IS&T International Symposium on Electronic Imaging (EI2020)26—30 January 2020 | Burlingame, US
- HISTORY | CONFERENCEFourth International Conference on the History of Physics17—19 June 2020 | Dublin, Ireland
EXPLORE PHYSICS WORLD
- Institute of Physics
- Join the Institute
- Modern Slavery Act
- Privacy and Cookies
- IOP Publishing
- Terms and Conditions
Physics World represents a key part of IOP Publishing’s mission to communicate world-class research and innovation to the widest possible audience. The website forms part of the Physics World portfolio, a collection of online, digital and print information services for the global scientific community.
BACK TO TOP
- Israeli woman, 26, arrested and charged with exploiting husband, 77JPOST.COM
- Most Expensive Dogs in the World, RankedWORK+MONEY
- Holocaust survivors honored by the Queen in UK New Year’s Honours ListsJPOST – DIASPORA
- These Will Be the Hottest Markets in the U.S. in 2020MANSION GLOBAL
Israeli scientists store digital information in DNA
DNA-based information storage may also help reduce our carbon footprint.
The research group. From right to left: Prof. Roee Amit, Inbal Vaknin, Leon Anavy, and Prof. Zohar Yakhini(photo credit: RAMI SHLUSH / TECHNION)Researchers at the Technion-Israel Institute of Technology in Haifa and the Interdisciplinary Center (IDC) in Herzliya have significantly optimized the process needed to store digital information on DNA, the Technion reported on Monday.According to the press release, in a paper published in the journal Nature Biotechnology, the group demonstrated storage of information in a density of more than 10 petabytes, or ten million gigabytes, in a single gram, while significantly improving the writing process. This, theoretically, allows for storing all the information stored on YouTube in a single teaspoon.Read More Related Articles
- Chuck Schumer to push quadrupling the budget for security grants program
- Pancreatic cancer patient in Romania set ablaze during surgery
Recommended byThe study was led by research student Leon Anavy, a student at the Technion Faculty of Computer Science, under the guidance of Prof. Zohar Yakhini of the Technion Faculty of Computer Science and IDC’s Efi Arazi School of Computer Science at IDC, in collaboration with Prof. Roee Amit’s Synthetic Biology Laboratory at the Technion Faculty of Biotechnology and Food Engineering, the release said.The optimization of the DNA information storage process may make it a viable alternative to traditional forms of information storage. As server farms are responsible for about 2% of global carbon emission, similar to the emission if global air traffic, and for 3% of global electricity consumption – a rate higher than the entire electricity consumption of the UK – DNA-based information storage may also help reduce our carbon footprint.According to the Technion, the group has developed advanced error-correction mechanisms to overcome errors that are an integral part of biological-physical processes, like the ones used for DNA information storage.”Thanks to the use of error-correction codes that are tailored to the unique encoding we created, we were able to perform highly efficient coding and to successfully recover the information,” Anavy said. “When working in a system consisting of millions of parts, even one-in-a-million events occur, which can disrupt the reading. Careful coding allowed us to overcome these problems.”According to the researchers, “the technology we presented in the paper has the potential to streamline further processes in synthetic biology and biotechnology.
TOP ARTICLES1/5READ MOREHamas ‘promoting’ Donald Trump’s Deal of theCentury, says Fatah“We believe that in the coming years, we will see a significant increase in the use of synthetic DNA in research and industry,” they said.
Sign up for The Jerusalem Post Premium Plus for just $5
Upgrade your reading experience with an ad-free environment and exclusive content
Join Now >
You Might Also Like
- Land Rover e Fusion estão entre os carros mais econômicos de 2019TG Centro Automotivo
- Unfinished Arizona House With Links to Sarah Palin Sells for $6.2 MillionMansion Global
- Novo estimulante natural sem efeito colateral vira febre no BrasilHomem Atual
- Reputation of Israeli government ‘sullied’ by appointment of Litzman
- 40% more Jewish visitors to Temple Mount compared to last Hanukkah
- Rivlin to Russian speakers: Thanks to you we have another holiday
- Jewish groups in New York to hold solidarity march
- Michmoret-based seaweed farm garnering global interest
- The Listings of the Week: A London Apartment with a ‘Secret’ Garden, A Singapore Duplex and…Mansion Global
Subscribe for our daily newsletter
- The Most Daring Dresses at the 2019 Met GalaSponsored – Family Minded
- Gertrude Himmelfarb, renowned Jewish scholar, dies aged 97
- Priciest Pads at Central Park Tower Will Top $100 MillionSponsored – Mansion Global
- Anvisa substitui Minoxidil por uma nova fórmula 8x mais anti-calvícieSponsored – Anigi – Segredo Indígena
- Wiesenthal Center calls on Trump to create FBI task force on antisemitism
1 Iran publicly hangs man on homosexuality charges 2 Hamas ‘promoting’ Trump’s ‘Deal of the Century,’ says Fata 3 New York Times columnist slammed for article on Jewish intelligence 4 Netanyahu met Germany’s Merkel, but this image stole the show – photo 9 5 Pompeo discusses US attacks on Iranian-militias with world leaders