Post List

  • August 30, 2010
  • 01:11 PM

Phoneme Inventory Size and Demography

by Wintz in A Replicated Typo 2.0

It’s long since been established that demography drives evolutionary processes (see Hawks, 2008 for a good overview). Similar attempts are also being made to describe cultural (Shennan, 2000; Henrich, 2004; Richerson & Boyd, 2009) and linguistic (Nettle, 1999a; Wichmann & Homan, 2009; Vogt, 2009) processes by considering the effects of population size and other . . . → Read More: Phoneme Inventory Size and Demography... Read more »

  • August 30, 2010
  • 01:01 PM

Serotonin, Psychedelics and Depression

by Neuroskeptic in Neuroskeptic

Note: This post is part of a Nature Blog Focus on hallucinogenic drugs in medicine and mental health, inspired by a recent Nature Reviews Neuroscience paper, The neurobiology of psychedelic drugs: implications for the treatment of mood disorders, by Franz Vollenweider & Michael Kometer. That article will be available, open-access, until September 23. For more information on this Blog Focus, including a Table of Contents, please visit The Great Beyond.Neurophilosophy is covering the history o........ Read more »

  • August 30, 2010
  • 01:00 PM

Plasmalogens Have Evolved Twice

by Moselio Schaechter in Small Things Considered

by Howard Goldfine.

Some biologists go blissfully through life without paying much attention to lipids. They do this at their own risk, because there are innumerable things to be learned from their study, including, as we will see here, many relevant to the understanding of evolution. Lipids come in unexpected and exciting varieties, a point that has been acknowledged in this blog (for examples, see here and here)

The lipids that make up the membranes of prokaryotes are polar, that is, they ha........ Read more »

  • August 30, 2010
  • 12:58 PM

Ketamine for Depression: Yay or Neigh?

by The Neurocritic in The Neurocritic

Venn diagram of psychoactive drugs [click for larger image]This post is part of a Nature Blog Focus on hallucinogenic drugs in medicine and mental health, inspired by a recent Nature Reviews Neuroscience paper, The neurobiology of psychedelic drugs: implications for the treatment of mood disorders, by Franz Vollenweider & Michael Kometer. This article will be available, open-access, until September 23. For more information on this Blog Focus, including a Table of Contents, please visit Th........ Read more »

  • August 30, 2010
  • 12:49 PM

Indirect Excitation Control: Ultrafast Quantum Gates for Single Atomic Qubits

by Chad Orzel in Uncertain Principles

Last week, John Baez posted a report on a seminar by Dzimitry Matsukevich on ion trap quantum information issues. In the middle of this, he writes:

Once our molecular ions are cold, how can we get them into specific desired states? Use a mode locked pulsed laser to drive stimulated Raman transitions.

Huh? As far as I can tell, this means "blast our molecular ion with an extremely brief pulse of light: it can then absorb a photon and emit a photon of a different energy, while itself jumping to ........ Read more »

Campbell, W., Mizrahi, J., Quraishi, Q., Senko, C., Hayes, D., Hucul, D., Matsukevich, D., Maunz, P., & Monroe, C. (2010) Ultrafast Gates for Single Atomic Qubits. Physical Review Letters, 105(9). DOI: 10.1103/PhysRevLett.105.090502  

  • August 30, 2010
  • 12:01 PM

Debate Over Identity of an Australian Tyrant

by Brian Switek in Dinosaur Tracking

Last March a team of paleontologists led by Roger Benson described what appeared to be a partial hip of a tyrannosauroid dinosaur from Australia—the first-ever trace of this group of dinosaurs on the southern continent. Now, in a comment and reply printed in last week’s Science, Matthew Herne, Jay Nair and Steven Salisbury argue that [...]... Read more »

Herne, M., Nair, J., & Salisbury, S. (2010) Comment on "A Southern Tyrant Reptile". Science, 329(5995), 1013-1013. DOI: 10.1126/science.1190100  

Benson, R., Barrett, P., Rich, T., Vickers-Rich, P., Pickering, D., & Holland, T. (2010) Response to Comment on "A Southern Tyrant Reptile". Science, 329(5995), 1013-1013. DOI: 10.1126/science.1190195  

  • August 30, 2010
  • 11:32 AM

Neuroscience of Murder and Aggression: Pharmacotherapy

by William Yates, M.D. in Brain Posts

Davis Love--2010 PGA ChampionshipThis is the final post in the series titled: Neuroscience of Murder and Aggression. The other four posts can be found in the links below:Overview and TED video of Dr. FallonEpidemiologyGeneticsBrain ImagingThe treatment of antisocial personality disorder, aggressive behavior and violence receives a limited amount of research attention.  Despite the public health implications of this problem, the therapeutic treatment options are limited.  Clinicians are........ Read more »

Gibbon S, Duggan C, Stoffers J, Huband N, Völlm BA, Ferriter M, & Lieb K. (2010) Psychological interventions for antisocial personality disorder. Cochrane database of systematic reviews (Online). PMID: 20556783  

Khalifa N, Duggan C, Stoffers J, Huband N, Völlm BA, Ferriter M, & Lieb K. (2010) Pharmacological interventions for antisocial personality disorder. Cochrane database of systematic reviews (Online). PMID: 20687091  

Pappadopulos E, Woolston S, Chait A, Perkins M, Connor DF, & Jensen PS. (2006) Pharmacotherapy of aggression in children and adolescents: efficacy and effect size. Journal of the Canadian Academy of Child and Adolescent Psychiatry , 15(1), 27-39. PMID: 18392193  

  • August 30, 2010
  • 09:05 AM

On competition, ecological opportunity, and Sahney et al.

by Jeremy Yoder in Denim and Tweed

There's already been a lot of blogospheric discussion of the BBC's recent declaration that "Darwin may have been wrong" based on a recently-published paleontology paper. I hadn't paid it much attention, because while sloppy science journalism irritates me, it's not quite in my wheelhouse, expertise-wise. Then I actually got around to reading the paper, and it turns out that it's directly related to some of my own work—and the conclusion that led to the sensationalistic sub-headline doesn't mak........ Read more »

Yoder, J.B., Des Roches, S., Eastman, J.M., Gentry, L., Godsoe, W.K.W., Hagey, T., Jochimsen, D., Oswald, B.P., Robertson, J., Sarver, B.A.J.... (2010) Ecological opportunity and the origin of adaptive radiations. Journal of Evolutionary Biology, 23(8), 1581-96. DOI: 10.1111/j.1420-9101.2010.02029.x  

  • August 30, 2010
  • 08:50 AM

Narcissistic College Students Spend More Time on Facebook

by John M Grohol PsyD in World of Psychology - Psych Central

It probably comes as little surprise to anyone, but a small exploratory study done on 100 college students from a single university suggests that students who score higher on a test of narcissism also spent more time checking and updating their Facebook profile.
Facebook is currently the world’s largest social network, with over 500 million users. More than 50% of Facebook’s active users log on to Facebook in any given day, while the average user has 130 social connections (what Fac........ Read more »

Mehdizadeh S. (2010) Self-presentation 2.0: narcissism and self-esteem on Facebook. Cyberpsychology, behavior and social networking_id, 13(4), 357-64.

  • August 30, 2010
  • 08:00 AM

Yummy mummies

by Zen Faulkes in NeuroDojo

When you think of cleaner fish, you probably think of those dramatically coloured little fish on tropical coral reefs, dancing in and out of the jaws of moray eels and other large predators. But coral reef fish aren’t the only ones that pick up parasites.

Pacific salmon get lice. Sea lice, to be exact. And you have to think these are about as unpleasant as human lice. Obviously, since salmon are heavily exploited, biologists are going to be interested in ways to control potentially harmful pa........ Read more »

Losos CJC, Reynolds JD, & Dill LM. (2010) Sex-selective Predation by Threespine Sticklebacks on Sea Lice: A Novel Cleaning Behaviour. Ethology. info:/10.1111/j.1439-0310.2010.01814.x

  • August 30, 2010
  • 07:32 AM

Pricing Protection

by Journal Watch Online in Journal Watch Online

Protecting ocean habitat can be a bit like buying laundry detergent: Better to buy in bulk. A first-ever effort to put a price tag on the cost of setting up new marine protected areas (MPAs) finds that costs can vary, but that bigger reserves deliver more bang for the buck. Researchers calculate that planners have […] Read More »... Read more »

McCrea-Strub, A., Zeller, D., Rashid Sumaila, U., Nelson, J., Balmford, A., & Pauly, D. (2010) Understanding the cost of establishing marine protected areas. Marine Policy. DOI: 10.1016/j.marpol.2010.07.001  

  • August 30, 2010
  • 07:14 AM

No need to FRET

by Becky in It Takes 30

I just found this very pretty story about a new kind of kinase sensor from Barbara Imperiali’s lab (Luković et al. 2009 Monitoring Protein Kinases in Cellular Media with Highly Selective Chimeric Reporters. Angew Chem Int Ed Engl. 48 6828-31).  I don’t have to tell you why kinases are important; phosphorylation is one of the [...]... Read more »

Luković E, Vogel Taylor E, & Imperiali B. (2009) Monitoring protein kinases in cellular media with highly selective chimeric reporters. Angewandte Chemie (International ed. in English), 48(37), 6828-31. PMID: 19681083  

  • August 30, 2010
  • 06:26 AM

when a few million years don’t mean much…

by Greg Fish in weird things

Oh those scientists with their constant corrections. Slightly more than a century ago, they said our planet and the entire solar system was a few hundred million years old, then they said it was 4.56 billion years old after fiddling around with radioactive isotopes in asteroids and meteors. Now, they’re changing the age of the [...]... Read more »

  • August 30, 2010
  • 06:18 AM

Bipartite networks: from description to prediction

by Timothée Poisot in Timothée Poisot

Food webs, since introduced by Elton in 1927, have proven to be useful descriptors of ecological communities, and have generated an impressive amount of theory and data (see e.g. the PEaCE Lab or the IWDB). In their simplest expression, food webs are visualized as a matrix with one population (e.g. the preys) as rows and [...]... Read more »

Bersier, L., Banašek-Richter, C., & Cattin, M. (2002) QUANTITATIVE DESCRIPTORS OF FOOD-WEB MATRICES. Ecology, 83(9), 2394-2407. DOI: 10.2307/3071801  

Ayco J. M. Tack, Sofia Gripenberg, & Tomas Roslin. (2010) Can we predict indirect interactions from quantitative food webs? – an experimental approach. Journal of Animal Ecology. info:/10.1111/j.1365-2656.2010.01744.x

  • August 30, 2010
  • 06:04 AM

The brain as a network – a new hypothesis?

by Neuromancy in Neuromancy

The BBC News Sci/tech section recently ran a few stories about neuroscience and technology that I considered to be a bit oversold. There was one article in particular I wanted to write about: Brain works more like internet than ‘top down’ company. The article refers to a recent study in PNAS that used injections of [...]... Read more »

  • August 30, 2010
  • 06:03 AM

Cephalopod Consciousness Part 3: The Case for Cephalopod Consciousness

by Mike Mike in Cephalove

Here it is, finally: the post you’ve been waiting for. Having already convinced you that you should care about the possibility of consciousness in cephalopods in Part 1 and having briefly outlined the state of research on consciousness in non-human animals in Part 2, I’ll get right down to it and discuss the possibility of [...]... Read more »

  • August 30, 2010
  • 06:00 AM

Article Review: Rethinking the premed requirements

by Michelle Lin in Academic Life In Emergency Medicine

Think back to your college years. Remember those premed courses that you had to take? Biology, chemistry, physics... oh my. How helpful were these in your preparation for medical school and clinical practice? In 1981, the Association of American Medical Colleges assembled a group, the General Professional Education of the Physician and College Preparation for Medicine (GPEP) to relook at these premed requirements. In 1984, the published a report "Physicians for the Twenty-First Century". They ad........ Read more »

  • August 30, 2010
  • 03:48 AM

Infrastructure Vulnerability

by Jan Husdal in

This paper describes an infrastructure risk analysis model, considering possible threats and potential impacts. Their model follows the commonly accepted risk assessment method of fault and event trees and provides a systematic process to conduct vulnerability modelling, assessment and management across different infrastructures, allowing for rank-ordering of alternatives and scenario bounding. ... Read more »

Ezell, B., Farr, J., & Wiese, I. (2000) Infrastructure Risk Analysis Model. Journal of Infrastructure Systems, 6(3), 114. DOI: 10.1061/(ASCE)1076-0342(2000)6:3(114)  

  • August 30, 2010
  • 02:37 AM

Supply Chain Risk Management Dissertations (No. 1)

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management

Today I start an irregular series on doctoral dissertations on Supply Chain Risk Management. An immense effort and dedication is spent on these works only to find the results hidden in libraries. So the goal is raise interest in their research.

Author / Topic
The first dissertation was written by Ingo Schneider in 2009 as his doctoral thesis at the Helmut Schmidt University in Hamburg, Germany. It was published by Shaker, Aachen and can be ordered here from or your local library......... Read more »

Schneider, Ingo. (2009) Die Risikobetrachtung in der Beschaffung als strategische Komponente im Supply-Chain-Design : eine Analyse am Beispiel Karosserieblechteile in der Automobilindustrie. Shaker, Aachen. info:/

  • August 30, 2010
  • 01:53 AM

What is the right chocolate dose?

by Dr Shock in Dr Shock MD PhD

A number of studies have shown cardiovascular benefits of eating flavanol rich cocoa. Cocoa is the important substance of chocolate. Especially dark chocolate can contain high levels of flavanols. The possible underlying mechanisms of these cardioprotective properties of chocolate can be several.
The biggest question that remains is about the right dose of dark chocolate. [...]

Related posts:The Right Chocolate Dose?
Chocolate and Pregnancy
Chocolate lowers cardiac mortality after first acut........ Read more »

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