Post List

  • January 27, 2010
  • 08:00 AM

Fishing, climate change not double trouble for corals

by Rob Goldstein in Conservation Maven

Do fishing and climate change act synergistically on coral reef ecosystems, meaning the combined impact is greater than the sum of each acting individually? Conservation practitioners have expressed this concern, but synergism in ecosystems has been challenging to prove scientifically...... Read more »

  • January 27, 2010
  • 06:20 AM

Viral resistance and new functions

by iayork in Mystery Rays from Outer Space

Last week, the Effect Measure blog1 talked about a paper that offered a new way of treating influenza.2 Briefly, the approach is to attack the virus by treating the host cell: Eliminating host functions that the virus requires, but that the host cell does not.
The authors of the paper commented that “targeting host cell [...]... Read more »

  • January 27, 2010
  • 05:52 AM

Looking at Peer-to-Peer Optimization Methods

by Tomas Rawlings in A Great Becoming

P2P algorithms can offer robustness and communication efficiency over more centralised GRID methods. So authors compared to p2p algorithms performance searching in large-scale and unreliable networks.
read more... Read more »

Balázs Bánhelyi, Marco Biazzini, Alberto Montresor, and Márk Jelasity. (2009) Peer-to-Peer Optimization in Large Unreliable Networks with Branch-and-Bound and Particle Swarms. Lecture Notes In Computer Science, 87-92. info:/

  • January 27, 2010
  • 05:34 AM

Time flew by ... I must have been enjoying myself

by BPS Research Digest in BPS Research Digest

Have you ever been in the cinema and felt the time drag? It's happened to me. A glance at my watch and then the thought that I can't be enjoying the film all that much or else the time would surely have flown. My experience matches the findings from a series of studies by Aaron Sackett and colleagues. The folk psychology belief 'time flies when you're having fun' is so powerful and ubiquitous, the researchers say, that whenever we feel an event has passed more quickly than we expected, we infer ........ Read more »

AM Sackett, LD Nelson, T Meyvis, BA Converse, & AL Sackett. (2010) You're having fun when time flies: The hedonic consequences of subjective time progression. Psychological Science. info:/10.1177/0956797609354832

  • January 27, 2010
  • 05:00 AM

Study finds high mercury levels, simplified food chain in prairie reservoir

by Rob Goldstein in Conservation Maven

A new study on mercury levels in prairie reservoirs finds exceedingly high concentrations in northern pike residing in a newly constructed reservoir in Alberta. In addition, the study suggests the reservoir’s food web is extremely simplified, a factor that could be further exacerbating the elevated levels of mercury...... Read more »

  • January 27, 2010
  • 02:49 AM

Attachment Theory and Poorly Performing Doctors

by Dr Shock in Dr Shock MD PhD

The attachment theory from the sixties of the previous century is still used e.g. in psychotherapy but also in research such as shown in a recent post on:How do social relationships function online. Is attachment theory also useful in medical education, does it explain the poor performance by some doctors? After all doctors are required [...]

Related posts:Twitter, Doctors, Hospitals and Medical Education Beginning March 2009 the number of hospitals on using...
Is 360-degree feedback for doc........ Read more »

  • January 27, 2010
  • 12:00 AM

Understanding Support for Militancy in Pakistan

by Randy Borum in Science of Global Security & Armed Conflict

Stability in Pakistan is in the fundamental interest of (at least most of) the global security community. And militancy is widely regarded as the most serious and present threat to that stability. Pew regularly conducts and reports on surveys of Pakistani public opinion. Policymakers and analysts also have their own set of working assumptions. As with all policy decisions our understanding and assumptions about the problem will affect, if not drive, our strategy and intervention. A recent study ........ Read more »

  • January 26, 2010
  • 09:59 PM

Taking Fish and Leaving Trash

by Dr. M in Deep Sea News

Monofilament fishing line is not what you expect to see on the deep ocean floor.  What would your response be if I told that enough occurs at depths over 1000 feet you can tally it?  And what if I told you it occurs frequently even in marine sanctuaries?  What if I told you it is [...]... Read more »

Watters, D., Yoklavich, M., Love, M., & Schroeder, D. (2010) Assessing marine debris in deep seafloor habitats off California. Marine Pollution Bulletin, 60(1), 131-138. DOI: 10.1016/j.marpolbul.2009.08.019  

  • January 26, 2010
  • 09:42 PM

A Little More Heat Shock Protein Manipulation Work

by Reason in Fight Aging!

Last week, I posted on the topic of calorie restriction mimetics, with a focus on enhancement of autophagy and the operation of heat shock proteins as a path to extended longevity - or at least some repair of age-related cellular damage. Both autophagy and heat shock proteins contribute to cleaning up damage and dysfunctional molecular machinery in our cells, and are strongly implicated in the benefits to health and longevity provided by exercise and calorie restriction. As an addendum to that p........ Read more »

  • January 26, 2010
  • 08:30 PM

Evolution: The Curious Case of Dogs

by Christie Wilcox in Observations of a Nerd

Man's best friend is much more than a household companion - for about two centuries, artificial selection in dogs has made them prime examples of the possibilities of evolution. While humans have been breeding dogs for over ten thousand years, it was until recently that strict breeds and the emphasis on "purebreds" has led to over 400 different breeds that are some of the best examples of the power of selection. Those that doubt that small variations in traits can lead to large levels of diversi........ Read more »

Akey, J., Ruhe, A., Akey, D., Wong, A., Connelly, C., Madeoy, J., Nicholas, T., & Neff, M. (2010) Tracking footprints of artificial selection in the dog genome. Proceedings of the National Academy of Sciences, 107(3), 1160-1165. DOI: 10.1073/pnas.0909918107  

  • January 26, 2010
  • 07:33 PM

Host factors help influenza virus replication

by geekheartsscience in geek!

German researchers have identified hundreds of host cell genes that affect influenza A virus replication. The work by Alexander Karlas and colleagues and published online in the journal Nature could help identify new drug targets which could be useful against a broad range of influenza viruses.
Influenza A viruses are a global public health threat that [...]... Read more »

Karlas, A., Machuy, N., Shin, Y., Pleissner, K., Artarini, A., Heuer, D., Becker, D., Khalil, H., Ogilvie, L., Hess, S.... (2010) Genome-wide RNAi screen identifies human host factors crucial for influenza virus replication. Nature. DOI: 10.1038/nature08760  

  • January 26, 2010
  • 06:29 PM

Wanted:Feedback on Importance of Finishing (Microbial) Genomes

by Jonathan Eisen in The Tree of Life

To allI am writing because I am working on a project to evaluate the importance of finishing microbial genomes. I know there has been lots of talk about this out there on the web and in papers, etc but I think a fresh discussion is useful. To get people up to speed below is a summary of the issue as I see it.Shotgun sequencing: Genome sequencing relies generally on the shotgun method at the beginning of a project where DNA fragments from an organism of interest are sequenced in a highly random........ Read more »

Blakesley, R., Hansen, N., Gupta, J., McDowell, J., Maskeri, B., Barnabas, B., Brooks, S., Coleman, H., Haghighi, P., Ho, S.... (2010) Effort required to finish shotgun-generated genome sequences differs significantly among vertebrates. BMC Genomics, 11(1), 21. DOI: 10.1186/1471-2164-11-21  

Fraser, C., Eisen, J., Nelson, K., Paulsen, I., & Salzberg, S. (2002) The Value of Complete Microbial Genome Sequencing (You Get What You Pay For). Journal of Bacteriology, 184(23), 6403-6405. DOI: 10.1128/JB.184.23.6403-6405.2002  

  • January 26, 2010
  • 06:21 PM

Learning to Teach

by Anne Welsh in Library Marginalia

Summary of Kate marek's article on the support required for LIS faculty in order to create and teach online courses... Read more »

Kate Marek. (2009) Learning to teach online: creating a culture of support for faculty. Journal of Education for Library and Information Science, 50(4), 275-292. info:/

  • January 26, 2010
  • 05:31 PM

Path Integration in the Desert Ant

by Jason Goldman in The Thoughtful Animal

As promised, here is the beginning of a series of posts on path integration. Let’s start with one of my mostest favorite sets of studies, concerning the humble desert ant, Cataglyphis fortis.

Path integration is the name given to the process thought to be used by animals (human and non-human alike) for dead reckoning. So, let’s [...]... Read more »

  • January 26, 2010
  • 05:29 PM

Herbicide resistant weeds in a GM field

by Thomas Kluyver in Thomas' Plant-Related Blog

Not the way that you might think or fear, though.
Genetically modified crops face public resentment, especially in Europe, perhaps simply as a figurehead of big corporate agriculture. One concern that often comes up is the possibility that the foreign genes will escape, to non-GM crops nearby or to weed populations. It’s not as unlikely as [...]... Read more »

Gaines, T., Zhang, W., Wang, D., Bukun, B., Chisholm, S., Shaner, D., Nissen, S., Patzoldt, W., Tranel, P., Culpepper, A.... (2009) Gene amplification confers glyphosate resistance in Amaranthus palmeri. Proceedings of the National Academy of Sciences, 107(3), 1029-1034. DOI: 10.1073/pnas.0906649107  

  • January 26, 2010
  • 05:13 PM

Be religious and live forever!

by Tom Rees in Epiphenom

OK, so the headline's a touch optimistic. Sadly we are all going to die some day, believers and non-believers alike. But, if you have the right kind of beliefs about god, you might at least be able to persuade yourself that you're not going to die.And those beliefs are? Fatalistic ones. In a survey of some 300 elderly Philadelphians, Laraine Winter and colleagues found that a high level of deference to God's will were linked to preferences for heroic medical interventions in hopeless cases.So, f........ Read more »

  • January 26, 2010
  • 05:00 PM

The paracetamol passion (aka the ‘acetaminophen affair’)

by Lorimer Moseley in BodyInMind

Paracetamol, or as you Americans call it acetaminophen, is, it seems, back in the headlines, amid concerns about new guidelines.I have a couple of thoughts on this that are vaguely connected to the story in Nature Medicine, which you can read here.  First, we tend to forget how good a drug paracetamol is – Lewis [...]... Read more »

Lorimer Moseley. (2010) The paracetamol passion (aka the 'acetaminophen affair'). BodyinMind. info:/

  • January 26, 2010
  • 04:34 PM

Intelligible speech and hierarchical organization of auditory cortex

by Greg Hickok in Talking Brains

It has been suggested that auditory cortex is hierarchically organized with the highest levels of this hierarchy, for speech processing anyway, located in left anterior temporal cortex (Rauschecker & Scott, 2009; Scott et al., 2000). Evidence for this view comes from PET and fMRI studies which contrast intelligible speech with unintelligible speech and find a prominent focus of activity in the left anterior temporal lobe (Scott et al., 2000). Intelligible speech (typically sentences) has inclu........ Read more »

  • January 26, 2010
  • 04:30 PM

E. coli do the wave

by Daniel in Ego sum Daniel

Now someone just has to engineer them to shout WOOOOOOOOAAAAH! Being able to predict recurring phenomena in the environment in order to adapt to them better offers an immense advantage to an organism. That's why pretty much all living things have an internal molecular clock that quite literally "ticks", it oscillates back and forth and allows the organism to tell what time it is. This probably arose in unicellular organisms to protect the delicate DNA molecule from the danger of UV light from th........ Read more »

Danino, T., Mondragón-Palomino, O., Tsimring, L., & Hasty, J. (2010) A synchronized quorum of genetic clocks. Nature, 463(7279), 326-330. DOI: 10.1038/nature08753  

  • January 26, 2010
  • 03:00 PM

The Mozart Effect Revisited

by Allison in Dormivigilia

Preterm infants who listened to Mozart or other Western classical music had improved weight gain. ... Read more »

Lubetzky, R., Mimouni, F., Dollberg, S., Reifen, R., Ashbel, G., & Mandel, D. (2009) Effect of Music by Mozart on Energy Expenditure in Growing Preterm Infants. PEDIATRICS, 125(1). DOI: 10.1542/peds.2009-0990  

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