Posts

April 14, 2015

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8:46 AM | Nanoparticles at specific temperature stimulate antitumor response
Researchers identify precise heat to boost immune system against cancer tumors.
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8:39 AM | Scientists create invisible objects without metamaterial cloaking
Researchers managed to make homogenous cylindrical objects completely invisible in the microwave range. Contrary to the now prevailing notion of invisibility that relies on metamaterial coatings, the scientists achieved the result using a homogenous object without any additional coating layers.
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8:09 AM | Quantization of surface Dirac states could lead to exotic applications
Scientists have uncovered the first evidence of an unusual quantum phenomenon - the integer quantum Hall effect - in a new type of film, called a 3D topological insulator. In doing this, they demonstrated that 'surface Dirac states' - a particular form of massless electrons - are quantized in these materials, meaning that they only take on certain discrete values.
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8:03 AM | On the road to spin-orbitronics
Researchers find new way to manipulate magnetic domain walls.
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8:00 AM | Want to do a survey on your career path in science?
From the inbox, a survey:While the number of PhDs conferred in the U.S. has increased over the past several decades, the number of tenure-track faculty positions has remained flat. Recent studies have illuminated the change in career decisions of some PhDs over time, but none has described or visualized a career map detailing where recent PhDs are currently employed.The study “Identifying Career Pathways for PhDs in Science” will endeavor to accomplish this visual representation by […]
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7:55 AM | Nanotechnology gold rush with cancer-seeking peptides
Researchers have demonstrated a promising new way to increase the effectiveness of radiation in killing cancer cells. The approach involves gold nanoparticles tethered to acid-seeking compounds called pHLIPs.
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7:29 AM | Production of Ethyl Acetate
Historically, synthesis of ethyl acetate is done through the classic Fischer esterification reaction, with ethanol and acetic acid, but there are other ways to obtain this compound, including the Tishchenk reaction, by dehydrogenation of ethanol and even bacterial production. Purchase ethyl acetate from Amazon in a range of pack sizes. Fischer Esterification Reaction This reaction [...]
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1:20 AM | Beyond the myth of ERMES Lang et al. write in Current Opinion...
Beyond the myth of ERMES Lang et al. write in Current Opinion in Cell Biology this week about the “myth of ERMES” - that is, the protein complex in yeast (ER-mitochondria encounter structure) associated with actively replicating mitochondrial DNA nucleoids. Linking ER and mitochondria, these complexes have been implicated in transfer of phospholipids and calcium, as well as coordinating mitochondrial genome replication. Also known as the Mdm complex (‘mitochondrial […]

April 13, 2015

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11:50 PM | “Handbook of Advanced Methods and Processes in Oxidation Catalysis: From Laboratory to Industry”
“Handbook of Advanced Methods and Processes in Oxidation Catalysis”, edited by Daniel Duprez and Fabrizio Cavani, aims to give an overview of catalytic oxidation methods. It is divided in two parts, covering total and selective oxidation, and draws on the experience of a number of academic and industrial scientists. It is a broad and generally useful book which fulfils its aims, being intended for the technical parts of the chemical industry as well as the academic community. This […]
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7:47 PM | Hay Fever Makes Your Brain Go Out of Control; So Don't Drive When You Have An Allergic Reaction
(Image: Aldo Sperber/picturetank - from New Scientist )Thirty per cent of the adult population experience seasonal allergies, especially hay fever. The eyes start watering and reddening and noses start running, making you looking and feeling like a big mess. But did you know that these are not the only effects of allergies? Did you know that it affects your brains reaction time to driving too?Hay fever or allergic rhinitis can be aggravated by anything from pollen, mould, dust, fungal […]
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6:12 PM | La graphologie: une spécifité française
Les Manchettes scientifiques d’Ariel Fenster Alors que dans le reste du monde l'utilisation de la graphologie pour évaluer un candidat à l'emploi est marginale, elle est restée très populaire en France. Les chiffres varient d'une étude à l'autre mais il semble qu'en France entre 30% et 50% des entreprises font encore appel à cette technique dans […]
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3:23 PM | Among the traits presented as most important for scientists,...
Among the traits presented as most important for scientists, there’s one kind that doesn’t get a great deal of lip service. Science is competitive, it’s irreverent, it’s combative, it’s stressful - but as a scientist your most appreciated colleagues are the ones that transcend this high pressure reality. David Brooks writes in the NYT this week: About once a month I run across a person who radiates an inner light. These people can be in any walk of life. They […]
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2:48 PM | The world's first drug test printed on paper
A paper-based test enables a rapid analysis of whether a compound - in this case, morphine - is present in a given sample. Possible future applications of the developed test include drug testing at workplaces and in connection with traffic control.
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2:37 PM | Creating bare, two-metal particles provides insights into potential substitutes for costly platinum in fuel cell catalysts
Platinum's scarcity hinders widespread use of fuel cells, which provide power efficiently and without pollutants. Replacing some or all of this rare and expensive metal with common metals in a reactive, highly tunable nanoparticle form may expand fuel cell use.
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2:26 PM | Team develops elastic-composite nanogenerator (w/video)
Scientists have demonstrated a facile methodology to obtain a high-performance and hyper-stretchable elastic-composite generator using very long silver nanowire-based stretchable electrodes.
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2:18 PM | Solution-grown nanowires make the best lasers
Take a material that is a focus of interest in the quest for advanced solar cells. Discover a 'freshman chemistry level' technique for growing that material into high-efficiency, ultra-small lasers.
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1:55 PM | Moore’s Law: A Silicon Story
Moore’s law is an insight into change, into the forces behind developments in silicon electronics—microchips—and their far-reaching consequences. In the early 1960s a young physical chemist named Gordon E. Moore had been at work for several years on the technology for making miniature electronic switches, called transistors. At the start-up Moore co-founded, Fairchild Semiconductor, he and his colleagues had refined a new and exciting approach to making transistors that was, […]
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1:00 PM | Why is Tanning Dangerous?
By: Ross Keller, 4th year PhD candidate in the Biomedical Sciences Graduate Program Summer will be here soon, and after being stuck inside all winter, it will be welcomed with open arms. But as we plan trips to beaches and lakes around the country, a lot of us (including myself) will look at our pale arms and…
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11:30 AM | Charges against Denver teacher dismissed
Last fall, a Denver teacher, Daniel Powell, was charged […]Related Posts:Denver student hit in chest with jet of flaming methanolCSB warns against using methanol in classroom or lab demosLab safety is critical in high school, tooPerforming the ‘rainbow’ flame test demo safely#Chemsafety presentations from #ACSDenver
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10:58 AM | New ways to see light and store information
Researchers have developed a method that significantly prolongs the lives of charges in organic electronic devices.
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8:12 AM | A nanotechnology sensor for one-step detection of Bishpenol A
While the actual toxicity of Bisphenol A (BPA) is still debated, the direct measurement of BPA is difficult because of the weak response given by conventional electrochemical sensors, and current optical analysis methods are susceptible to the influence of interfering substances. A novel aptamer/graphene oxide FRET biosensor now provides a method for the rapid detection and risk assessment of BPA with high sensitivity and selectivity.
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5:09 AM | Performance and durability combine in liquid crystal transistors
Researchers have designed a smectic liquid crystal that overcomes many of the challenges posed by organic field effect transistor materials.
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4:44 AM | The most incorrect article you will read this week on undergraduate chemical education
From the comments, a shockingly wrong article in the Wall Street Journal: Chemistry Departments Try to Attract More Students by Retooling the Major Universities begin to overhaul traditional curricula in science field that some worry is churning out too few graduates for nation’s needs Forget economics. Chemistry might be the real dismal science. Undergraduate programs have been characterized for decades by rigid, yearlong sequences of organic, physical and […]

April 12, 2015

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6:43 PM | @olzhu like I said, I don’t think shared prenatal environment is...
@olzhu like I said, I don’t think shared prenatal environment is even the biggest issue. Shared environment up to 11 years old is much more significant, especially for something as socially constructed as political standing. Check out the paper (open access preprint here). There are plenty of confounding biological factors to choose from though, see for example this table (van Dongen 2012): That paper pushed for ‘the continuing value of twin studies in the omics […]
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6:27 PM | The campaign rumbles on
This election campaign already seems to be dragging. With the election itself more than 3 weeks away, the party manifestos are only just appearing, and all that seems to have happened so far is that the rival parties are making claims about what they would do if elected, claims are often completely unsubstantiated. For example, … Continue reading The campaign rumbles on →
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5:23 PM | "The tension between parsimony and detail runs through systems biology like a fault line"
“The tension between parsimony and detail runs through systems biology like a fault line” - Jeremy Gunawardena, Models in biology: ‘accurate descriptions of our pathetic thinking’ In a recent post I discussed ‘the hedgehog and the fox’ of philosopher Isaiah Berlin’s eponymous essay. Another aspect of models in biology is how detailed they are. The Scholastic philosopher and theologican William of Ockham is associated with Occam’s Razor […]
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3:52 PM | Political inheritance
I’m totally bemused this morning to read that prominent geneticists believe political ideology has a genetic basis, estimated at ~60% in a recent study of twins by Hatemi et al.. Political beliefs (beliefs about the world, one’s place in it and proper relations to others) are to my mind one of the clearest example of a set of socioculturally generated values. I thought this was just a basic shared understanding amongst scientists - that there are limits on genetic data […]
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1:21 PM | Electrical control of quantum bits in silicon paves the way to large quantum computers
Researchers have encoded quantum information in silicon using simple electrical pulses for the first time, bringing the construction of affordable large-scale quantum computers one step closer to reality.
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10:11 AM | This Week in Chemistry – A Rapid-Charging Aluminium Battery, & Fracking Pollution Concerns
Here’s the weekly summary of both new chemistry research and studies that have been in the news. This week features a ‘smart’ window that can harness energy from the weather to change colour, a renewed debate over lawrencium’s position in the periodic table, and more. As always, links to further articles and original research papers are provided below, […]
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3:56 AM | The wet IDP There’ve been a couple of cool papers on IDPs...
The wet IDP There’ve been a couple of cool papers on IDPs and their ‘hydration water’ published in the last month - one in Nature Communications across 10 institutions, and another more modestly accomodated at just D. E. Shaw Research laboratories (NY, NY) and Columbia university. Perhaps I’ve just been paying insufficient attention, but this is the first time I’ve seen a privately held research group (outside pharmaceuticals and drug development). The connection […]
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