Post List

  • October 7, 2009
  • 04:19 PM

Spoor of South African Dinos Analyzed

by Greg Laden in Greg Laden's Blog

A new investigation of the sedimentology and ichnology of the Early Jurassic Moyeni tracksite in Lesotho, southern Africa has yielded new insights into the behavior and locomotor dynamics of early dinosaurs. Read the rest of this post... | Read the comments on this post...... Read more »

  • October 7, 2009
  • 04:00 PM

Gen-F Scientists Ignoring Social Networking

by sciencebase in Sciencebase Science Blog

A quick analysis of online social networks, such as LinkedIn and Xing would suggest that a mere 1 in 7 research scientists use such tools as part of their work. This contrasts starkly with the business world where uptake is up to 88%. In other words almost 9 out of every ten employees in the [...]Gen-F Scientists Ignoring Social Networking is a post from: Sciencebase Science Blog
... Read more »

  • October 7, 2009
  • 03:58 PM

What conclusions can we draw from Neanderthal DNA pt.2

by Wintz in A Replicated Typo

4. Nuclear DNA: Forays into 3 billion base pairs
4.1 Before Vi-80
The Vindija-80 (Vi-80) specimen is an important find for geneticists: it yielded a minimally contaminated sample and provided those first steps into Neanderthal genomics.
Previously, attempts at retrieving ancient nuclear DNA sequences proved to be a notoriously difficult process, plagued with problems of degradation, contamination and [...]... Read more »

Green, R., Krause, J., Ptak, S., Briggs, A., Ronan, M., Simons, J., Du, L., Egholm, M., Rothberg, J., Paunovic, M.... (2006) Analysis of one million base pairs of Neanderthal DNA. Nature, 444(7117), 330-336. DOI: 10.1038/nature05336  

Briggs AW, Good JM, Green RE, Krause J, Maricic T, Stenzel U, Lalueza-Fox C, Rudan P, Brajkovic D, Kucan Z.... (2009) Targeted retrieval and analysis of five Neandertal mtDNA genomes. Science (New York, N.Y.), 325(5938), 318-21. PMID: 19608918  

Krause J, Lalueza-Fox C, Orlando L, Enard W, Green RE, Burbano HA, Hublin JJ, Hänni C, Fortea J, de la Rasilla M.... (2007) The derived FOXP2 variant of modern humans was shared with Neandertals. Current biology : CB, 17(21), 1908-12. PMID: 17949978  

Lalueza-Fox C, Römpler H, Caramelli D, Stäubert C, Catalano G, Hughes D, Rohland N, Pilli E, Longo L, Condemi S.... (2007) A melanocortin 1 receptor allele suggests varying pigmentation among Neanderthals. Science (New York, N.Y.), 318(5855), 1453-5. PMID: 17962522  

Coop, G., Bullaughey, K., Luca, F., & Przeworski, M. (2008) The Timing of Selection at the Human FOXP2 Gene. Molecular Biology and Evolution, 25(7), 1257-1259. DOI: 10.1093/molbev/msn091  

  • October 7, 2009
  • 02:21 PM

Beauty is “more” in the eye of the beholder…..

by Wayne Hooke in The Psychology of Beauty

Joshua Foster (2008) conducted a study that expands on the research that explores the role of visual and olfactory cues in attractiveness ratings. Previous studies – which found that olfactory cues may be as influential or more influential in evaluating attractiveness – have relied on retrospective reports from participants. Foster’s design utilized real-time, in-the-moment attractiveness [...]... Read more »

  • October 7, 2009
  • 02:18 PM

Pain and rheumatology: an overview of the problem

by Bronwyn Thompson in Healthskills: Skills for Healthy Living

One of the most common reasons to visit a doctor is musculoskeletal pain. And one of the first symptoms of a rheumatological disorder is pain – so it’s great to find this succinct overview of pain in rheumatological disorders. I think one of the saddest findings I’ve read recently (I blogged about it [...]... Read more »

Montecucco, C., Cavagna, L., & Caporali, R. (2009) Pain and rheumatology: An overview of the problem. European Journal of Pain Supplements. DOI: 10.1016/j.eujps.2009.07.006  

  • October 7, 2009
  • 01:27 PM

Pennes Bioheat Transfer Equation

by Arunn in nOnoScience (a.k.a. Unruled Notebook)

It can be argued that one of the most influential articles ever published in the Journal of Applied Physiology is the Analysis of tissue and arterial blood temperatures in the resting human forearm by Harry H. Pennes, which appeared in Volume 1, No. 2, published in August, 1948. Thus begins Prof. Wissler, his 1998 revisit [...]... Read more »

  • October 7, 2009
  • 01:20 PM

Visual analgesia: Seeing the body reduces pain

by Mo in Neurophilosophy

VISION is now well known to modulate the senses of touch and pain. For example, various studies have shown that looking at oneself being touched has the opposite effect - it can enhance tactile acuity, so that one can discriminate between two pinpoints which would otherwise feel like a single sensation. And last year, researchers from the University of Oxford showed that making a limb look larger or smaller than it actually using binoculars can respectively enhance and diminish painful sensation........ Read more »

Longo, M., Betti, V., Aglioti, S., & Haggard, P. (2009) Visually Induced Analgesia: Seeing the Body Reduces Pain. Journal of Neuroscience, 29(39), 12125-12130. DOI: 10.1523/JNEUROSCI.3072-09.2009  

  • October 7, 2009
  • 12:14 PM

Money Walks

by Journal Watch Online in Journal Watch Online

Decline in hiking and backpacking could hurt conservation donations

... Read more »

  • October 7, 2009
  • 11:38 AM

Exotic plants integrate into plant-pollinator networks

by Marc Cadotte in The EEB and flow

At almost any spot on the globe, there are species present that are not native to that locale, having been transported by human activities. Whether and how exotic species impact communities is a multifaceted problem that requires understanding the multitude of direct and indirect species interactions that occur. In a paper published in the Proceedings of the Royal Society, B, Montserrat Vila and colleagues asked if exotic plants where integrated into plant-pollinator networks, and whether this i........ Read more »

Vila, M., Bartomeus, I., Dietzsch, A., Petanidou, T., Steffan-Dewenter, I., Stout, J., & Tscheulin, T. (2009) Invasive plant integration into native plant-pollinator networks across Europe. Proceedings of the Royal Society B: Biological Sciences, 276(1674), 3887-3893. DOI: 10.1098/rspb.2009.1076  

  • October 7, 2009
  • 11:37 AM

Age-related changes in total and regional fat distribution

by Travis Saunders, MSc in Obesity Panacea

Unfortunately there are other negative changes in body fat distribution with age, including increased fat storage in the heart, liver, bone marrow, and skeletal muscle, all of which are associated with increased metabolic risk, as well as increased risk of fractures in the case of bone marrow. And as mentioned before, none of these changes are readily apparent when obesity is being measured by BMI or waist circumference alone, which are the most common measures used in the field (and which are ........ Read more »

Kuk, J., Saunders, T., Davidson, L., & Ross, R. (2009) Age-related changes in total and regional fat distribution. Ageing Research Reviews, 8(4), 339-348. DOI: 10.1016/j.arr.2009.06.001  

  • October 7, 2009
  • 10:29 AM

Longitudinal analysis of street Ecstasy content

by DrugMonkey in DrugMonkey

A topic that arises every now and again, particularly when I am discussing Ecstasy-related medical emergency and death, is the nature of the psychoactive ingredients in Ecstasy tablets. For definitional purposes, I consider 3,4-methylenedioxymethamphetamine (MDMA) to be what is considered by the vast majority of consumers to be canonical "Ecstasy".

It is reasonably well-established in the peer reviewed literature and the harm reduction effort that some fraction of Ecstasy that ........ Read more »

Vogels, N., Brunt, T., Rigter, S., van Dijk, P., Vervaeke, H., & Niesink, R. (2009) Content of ecstasy in the Netherlands: 1993-2008. Addiction. DOI: 10.1111/j.1360-0443.2009.02707.x  

  • October 7, 2009
  • 07:00 AM

The birth of dragons

by Zen Faulkes in NeuroDojo

How did Komodo dragons evolve to be the world's biggest lizards?

The story goes that cartographers would write, “Here be dragons,” on the places of the map where they had no information. This would only be true in a few areas of the world, namely a few islands in the south Pacific, where Komodo dragons live.

As I talked about in an earlier post, weird things happen to the size of species on islands. Big species get small. Small species get big.

And if there’s one ........ Read more »

  • October 7, 2009
  • 06:30 AM

Hear the animals roar: using acoustic sensors to measure wildlife abundance

by Rob Goldstein in Conservation Maven

... Read more »

  • October 7, 2009
  • 05:30 AM

For the poor in NYC costs count more than calories

by Yoni Freedhoff in Weighty Matters

On July 18th, 2009 New York City's mandatory menu calorie law went into action and restaurants with 15 or more locations were forced to post calories on menu boards and/or menus for their patrons.The hope has always been that armed with this information people would choose fewer calories.Well, so far the results aren't too promising - at least not for a very specific population.In a paper published online in the journal Health Affairs, Brian Ebel and colleagues explored the purchasing behaviour ........ Read more »

Brian Elbel, Rogan Kersh, Victoria L. Brescoll, & L. Beth Dixon. (2009) Calorie Labeling And Food Choices: A First Look At The Effects On Low-Income People In New York City. Health Affairs. info:/

  • October 6, 2009
  • 08:45 PM

There is Money in Your Future

by Daniel Hawes in Ingenious Monkey | 20-two-5

A recent study shows that attitudes related to future-self are linked to saving behavior. People who display greater future self continuity tend to have reduced experimental discount rates and larger accumulation of real-life assets.... Read more »

  • October 6, 2009
  • 06:15 PM

Algae bounced back after a knock

by Thomas Kluyver in Thomas' Plant-Related Blog

A number of mass extinctions punctuate the fossil record, dealing a sharp blow to life on Earth. The best known (although not the biggest) is the one that did for the dinosaurs, some 65 million years ago. Unlike some mass extinctions, there’s at least one smoking gun: a damn great rock crashed into the planet, [...]... Read more »

  • October 6, 2009
  • 06:02 PM

Rapid Resurgence of Marine Productivity After the Cretaceous-Paleogene Mass Extinction

by Greg Laden in Greg Laden's Blog

The course of the biotic recovery after the impact-related disruption of photosynthesis and mass extinction event at the Cretaceous-Paleogene boundary has been intensely debated. The resurgence of marine primary production in the aftermath remains poorly constrained because of the paucity of fossil records tracing primary producers that lack skeletons. Here we present a high-resolution record of geochemical variation in the remarkably thick Fiskeler (also known as the Fish Clay) boundary layer a........ Read more »

  • October 6, 2009
  • 05:27 PM

Does eating chocolate improve my mood as much as I think it does?

by Dave Munger in Cognitive Daily

I think I've mentioned here before that I'm a big fan of chocolate. I get upset when coffee shops in my area only bring out the chocolates in the afternoon. Who says you can't have a chocolate chip cookie for breakfast?

Chocolate, combined with a cup of coffee, helps me work all the way through to the end of the day, when I'd otherwise be tempted to call it quits in the late afternoon. So naturally I was excited when Greta found a research report on the effect of chocolate on mood. Could there ........ Read more »

  • October 6, 2009
  • 04:53 PM

What conclusions can we draw from Neanderthal DNA pt.1

by Wintz in A Replicated Typo

In recent times, genetic technology has progressed sufficiently to elucidate upon some of the questions normally preserved for archaeologists. One such question concerns the fate of a group of hominins that roamed Europe and East Asia for at least 250,000 years. During this time, this species adapted and endured some of the harshest environments on [...]... Read more »

  • October 6, 2009
  • 02:41 PM

I Smell An Invasive Rat

by Journal Watch Online in Journal Watch Online

Genetic tests pin down origins of island-hopping rodents

... Read more »

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