Posts

September 15, 2014

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8:53 AM | Relativistic jets from low-mass active galactic nuclei
Today, I would like to write about a research I have conducted during the latest years. A couple of years ago, in one of my earlier posts, I have summarized the meaning of the discovery of powerful relativistic jets in Narrow-Line Seyfert 1 Galaxies. ☞ A recent more detailed review can be found here. The main point is that it allowed us to understand that relativistic jets in active galactic nuclei (AGN) do not depend on the mass of the central black hole, as it was supposed […]
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8:49 AM | Magnetic nanoparticle biospleen device for sepsis therapy
Novel dialysis-like therapeutic device inspired by the spleen quickly filters bacteria, fungi and toxins.
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7:32 AM | Wie man mit einem Quantenpunkt einzelne Photonen erzeugt
Einzelne Photonen in einem Quantenpunkt erzeugen und seine Information zerstörungsfrei auslesen: Diese Technologie eröffnet neue Wege in der Quanteninformationsverarbeitung und -übertragung, die für künftige Computeranwendungen wegweisend sein können.
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6:40 AM | Novel varistor embedded ceramic transistor hybrid devices
New work demonstrates that varistors and transistors are inherently coupled devices. These hybrid devices can simultaneously be used in the same electronic circuit as a varistor to protect the circuit elements against overshoot of prescribed voltage supply and as a transistor for signal amplification and electronic switch.
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6:22 AM | Using microwaves to optimize platinum-nickel nanoalloys for catalytic water treatment
The adoption of a newly developed, facile synthesis method in catalyst designs may permit the rapid screening of nanoalloys for water contaminants. Given the compositional dynamics of this technique, a series of nanoalloys with different surface compositions can be quickly synthesized using a single starting solution and the optimal metal ratio experimentally determined to find the best catalytic reactivity for degrading the pollutant.
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6:00 AM | L’Astronomia alle frontiere della Scienza
L’astronomia è, per sua natura, una materia di studio interdisciplinare perchè coinvolge la matematica, la fisica, la chimica e la biologia. Gli astronomi utilizzano, e spesso sviluppano, la tecnologia più recente, i computer più veloci e i programmi più sofisticati. Nel libro che mi piace suggerire oggi, Astronomy at the Frontiers of Science, edito da Springer, […]

September 14, 2014

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9:18 PM | Some early galaxies were oddly heavy and starry
From detailed modeling and what we see of modern galaxies, we expect the earliest galaxies to be small and have intense star formation. A new survey using data from the Spitzer space telescope and the Subaru telescope in Hawaii has found a lot of surprisingly massive galaxies at the edge of our ability to observe, […]
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8:21 PM | Appendice: Atom, Topolino, Flash Gordon e il fico strangolatore
Queste poche righe sarebbero dovute comparire nel post dedicato a L'armata Hot Dog, ma la memoria, fino a settimana scorsa, ha difettato. Poi, grazie allo stimolo del volume Le follie di Eta Beta, ecco che la memoria ritorna.Iniziamo con la scena dalla storia lunare in cui Atom si trova invischiato tra i tentacoli guardiani lasciati dal perduto popolo dei lunatici: La drammatica scena ricorda e non poco una analogamente drammatica scena disegnata da Floyd Gottfredson ne La spia poeta in cui […]
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7:50 PM | Experiments with inertia
a coulpe of home experiments about #inertia from Science Comics #2
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4:11 PM | Nanoscale study sheds new light on why batteries go bad
A comprehensive look at how tiny particles in a lithium ion battery electrode behave shows that rapid-charging the battery and using it to do high-power, rapidly draining work may not be as damaging as researchers had thought - and that the benefits of slow draining and charging may have been overestimated. The results challenge the prevailing view that 'supercharging' batteries is always harder on battery electrodes than charging at slower rates.
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2:00 PM | MI weekly selection #92
Long extinct squirrel-like creatures hold clues to earlier mammal evolution. Mammals may have evolved much earlier than previously thought, according to researchers who’ve been […] Read more The post MI weekly selection #92 appeared first on Mapping Ignorance. Related posts:MI weekly selection #86 Private health insurance: adverse or propitious selection? You have to learn how to die
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12:00 PM | International Meteor Conference 2014
The International Meteor Organization (IMO) was founded in 1988 and has more than 250 members now. IMO was created in response to an ever growing need for international cooperation of meteor amateur work. The collection of meteor observations by several methods from all around the world ensures the comprehensive study of meteor showers and their […]
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9:00 AM | Magnetism and Variability in O stars
For more than 30 years, spectroscopic observations from space have shown that wind variability in massive OB stars is a widespread phenomenon. This variability is not strictly periodic, but cyclic (like sunspots) with a dominant quasi period that scales with the estimated rotation period. The underlying cause or trigger of this variability is not known. […]
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6:30 AM | NATO workshop to seek nanotechnology to aid biological and chemical defense
NATO organizes a workshop to improve the detection and decontamination of biological and chemical agents.
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6:00 AM | IAU Symposium 313: “Extragalactic jets from every angle”
Jets appear in a wide range of astrophysical sources. In extragalactic systems, they signal accretion onto a supermassive black hole, providing unique testbeds in which to probe an array of fundamental physics processes. Over the past decade, major advances have been made in understanding jets due to the advent of an unprecedented number of space- […]

September 13, 2014

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5:30 PM | The 10° INTEGRAL Workshop “A Synergistic View of the High Energy Sky”
The goal of this workshop is to present and discuss (via invited and contributed talks and posters) the latest results obtained in the field of high-energy astrophysics using the International Gamma-Ray Astrophysics Laboratory INTEGRAL, and place these results in the context of other operational space-based missions, such as Swift, Fermi, AGILE, NuSTAR, and Maxi as […]
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4:37 PM | Lo zio Oswald e il Roald Dahl che non ti aspetti
via Cinque cose belleMia sorella mi ha ricordato che oggi è il Roald Dahl Day, così ecco la recensione di un romanzo sorprendente, inedito in Italia.Se siete uno di quegli adulti che amano Roald Dahl per le sue storie per bambini, se siete uno di quegli adulti che ritiene Il GGG il più bel libro mai scritto in assoluto, allora state lontani da Lo zio Oswald: potrebbe non piacervi.Il romanzo di Dahl, fino a qualche tempo fa ancora inedito in Italia, aggiunge un nuovo […]
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3:42 PM | The shadow of a disease - detecting tumor markers by their scattered light
In future, some diseases might be diagnosed earlier and treated more effectively. Researchers have developed an optical method that makes individual proteins, such as the proteins characteristic of some cancers, visible.
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3:30 PM | Decoding 'sweet codes' that determine protein fates at atomic resolution
Researchers have developed a methodology for quantitatively describing the dynamic behaviors of complicated sugar chains in solution at atomic resolution by combining a sophisticated NMR spectroscopic approach with an ingenious molecular dynamics simulation technique.
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3:00 PM | Evolving Galaxies in Evolving Environments
The programme of the conference will cover the following topics: Evolving environments: clusters, groups, density field, clustering, dark matter environment, and how they depend globally on redshift) Central galaxies: links between accretion, bulge growth, star formation & AGN feedback, including BCGs. Multiphase gas and environment: observations and simulations of gas budget vs halo mass, hot […]
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2:15 PM | In rats and man, nicotine withdrawal sucks the pleasure from life
Reduced reward response in brains helps explain why it’s so […]
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2:14 PM | Hunt for water may have led human evolution
Our ancient ancestors’ ability to move around and find new […]
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2:13 PM | Solving the puzzle of Greenland melting 20,000 years ago
Using a combination of experimental data taken from ice cores from the frigid glacier of Greenland and computer models of global circulation, scientists have partially solved a mystery about a lagged melting of Greenland 20,000 years ago, when the glaciers … Continue reading →

Buizert C, Gkinis V, Severinghaus JP, He F, Lecavalier BS, Kindler P, Leuenberger M, Carlson AE, Vinther B, Masson-Delmotte V & White JW (2014). Greenland temperature response to climate forcing during the last deglaciation., Science (New York, N.Y.), 345 (6201) 1177-80. PMID: http://www.ncbi.nlm.nih.gov/pubmed/25190795

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2:08 PM | Brain inflammation dramatically disrupts memory retrieval
Research sheds light on cognitive losses seen with chemotherapy, autoimmune […]
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2:06 PM | Where’s the atmosphere’s self-cleaning power?
In a finding that could alter how scientists quantify emissions […]
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2:03 PM | A Link Between Jacobsen Syndrome and Autism
A rare genetic disorder known as Jacobsen syndrome has been […]
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12:30 PM | Type Ia Supernovae: progenitors, explosions, and cosmology
The Joint Institute for Nuclear Astrophysics (JINA), the Kavli Institute for Cosmological Physics (KICP), and the Flash Center for Computational Science at the University of Chicago will host an International conference on the observations and simulations of thermonuclear “Type Ia Supernovae: progenitors, explosions, and cosmology” on on September 15-19, 2014. The conference will be held […]
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11:58 AM | On Academic Scandals
Two very brief notes about high-profile scandals in academia: 1) While it involves one of my faculty colleagues, I have no special insight to offer into the case of Valerie Barr’s firing by the NSF over long-ago political activity. I know and like Valerie as a colleague, and she did some really good stuff as…
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9:15 AM | Physics Week in Review: September 13, 2014
This week on Virtually Speaking Science, I chatted with Caltech’s Spiros Michalakis about quantum computing, quantum information, and when we might expect Google to have a quantum computer... -- Read more on ScientificAmerican.com
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9:00 AM | Towards Other Earths II. The Star-Planet Connection
The study of extrasolar planets is one of the most active areas of research of modern astronomy. The number of discoveries attests for the importance of a topic that reaches out and captivates the imagination of scientists and public alike. Central to this research is the characterization of the planet’s host star properties. Several reasons […]
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