Sometime in the early 1950s a wooden object was dredged from the mouth of the Skagit River, north of Seattle. It ended up in the possession of Mr. and Mrs. Edwin Johnson, residents of the nearby town of La Conner. In 1952 the Johnsons showed it to two local archaeologists, Herbert Taylor of Western Washington [...]... Read more »
How can you measure the impact of a law? The Obama administration, for example, recently called for an “evidence-based” approach to the writing of laws and policies that affect the public’s health in matters of drug abuse. But applying the scientific method to an evaluation of a law’s impact requires a rigorous approach to measurement. In “Measuring Law for Public HealthEvaluation Research,” published in the June 2010 Evaluation Review, Charles Tremper, Sue Thomas and Alexander C. Wa........ Read more »
Reliability theory is, put very simply, a way of modeling and predicting the failure modes and mean time to failure of complex systems with many redundant parts subject to wear and tear. Reliability theory has seen a great deal of use in the electronics industry, amongst many others, but the human body is also a complex system that can be considered in these terms. Looking at our life spans and age-related illnesses in the context of reliability theory and the accumulating failure of redundant s........ Read more »
Mao L, Roemer I, Nebrich G, Klein O, Koppelstaetter A, Hin SC, Hartl D, & Zabel C. (2010) Aging in mouse brain is a cell/tissue-level phenomenon exacerbated by proteasome loss. Journal of proteome research. PMID: 20469937
A new study by researchers at the Swedish medical university Karolinska Institutet supports the hypothesis that there is a link between mental illness and creativity. More specifically, they showed that highly creative people – with high scores in divergent thinking – had a lower density of D2 receptors in their thalamus than less creative people. [...]... Read more »
de Manzano, Örjan, Cervenka, Simon, Karabanov, Anke, Farde, Lars, & Ullén, Fredrik. (2010) Thinking Outside a Less Intact Box: Thalamic Dopamine D2 Receptor Densities Are Negatively Related to Psychometric Creativity in Healthy Individuals. PLoS ONE. info:/
Before I start, allow me to announce that Tet Zoo merchandise is now available! So far, I've only used the Tet Zoo logo for these products, but I might produce additional designs in time.
Anyway... welcome to another article in the Tet Zoo gekkotan series. I really want to get through to the end without too many distractions (like amphiumas, wayward grey whales, manatees, white rhinos, giraffe-necked tortoises), otherwise I might never finish. Look what happened with toads and temnospondyls........ Read more »
Bauer, A., & Russell, A. (1989) A systematic review of the genus Uroplatus (Reptilia: Gekkonidae), with comments on its biology. Journal of Natural History, 23(1), 169-203. DOI: 10.1080/00222938900770101
It’s an article packed full of potential contention as it speaks to a variety of issues involving fisheries management. So thank God we are dealing with a charismatic marine species or we just may be contemplating their extinction. But then again, perhaps we are doing just that since all 7 species of marine turtles are [...]... Read more »
Yangtze River dolphin maintained large range before extinction
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Turvey, S.T. et al. (2010) Spatial and temporal extinction dynamics in a freshwater cetacean. Proceedings of the Royal Society B. info:/10.1098/rspb.2010.0584
In the last post, we discussed differences in ghrelin production after gastric bypass and sleeve gastrectomy. Today the studies we are going to consider describe the effects of gastric banding and sleeve gastrectomy on ghrelin and weight loss variables.Langer et al. randomly assigned (love it!) 20 patients to either gastric banding or sleeve gastrectomy. The groups were well-matched on demographics and medical co-morbidities. The researchers measured plasma ghrelin levels at 4 time periods: preo........ Read more »
Langer, F., Reza Hoda, M., Bohdjalian, A., Felberbauer, F., Zacherl, J., Wenzl, E., Schindler, K., Luger, A., Ludvik, B., & Prager, G. (2005) Sleeve Gastrectomy and Gastric Banding: Effects on Plasma Ghrelin Levels. Obesity Surgery, 15(7), 1024-1029. DOI: 10.1381/0960892054621125
Himpens, J., Dapri, G., & Cadière, G. (2006) A Prospective Randomized Study Between Laparoscopic Gastric Banding and Laparoscopic Isolated Sleeve Gastrectomy: Results after 1 and 3 Years. Obesity Surgery, 16(11), 1450-1456. DOI: 10.1381/096089206778869933
Last time we read an article from Brem and colleagues that compared word processing in adolescents (age 15-17) and adults (19-30). In follow-up paper from 2009, Brem expanded the report to include children (9-11).
[[ This is a content summary only. Visit my website for full links, other content, and more! ]]
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Brem S, Halder P, Bucher K, Summers P, Martin E, & Brandeis D. (2009) Tuning of the visual word processing system: distinct developmental ERP and fMRI effects. Human brain mapping, 30(6), 1833-44. PMID: 19288464
Well, we have a global financial crisis. We also know that religion is a source of solace for a lot of people. So will the financial crisis mean boom times for religion?
The answer is probably yes, but not in a way that's straightforward. That's the message from two new studies, one in the US (which is the topic of this post) and one in Indonesia (which I'll write up in the next post). The Indonesian one is particularly interesting because it's not often we get insights into the role of religi........ Read more »
Bradshaw, M., & Ellison, C. (2010) Financial Hardship and Psychological Distress: Exploring the Buffering Effects of Religion☆. Social Science . DOI: 10.1016/j.socscimed.2010.03.015
Please indulge a long post from a personal perspective, what genomics is about to do for _me_. This is information that many, if not all, of our readers already know. I’ve been researching and working in either experimental biology or genomics for over 20 years. Ever since the beginning of the Human Genome Project , which coincidently started the same year I started my Ph.D. program, into my postdoctoral research at EMBL and now my work at OpenHelix, I’ve known that someday personal........ Read more »
Ashley, E., Butte, A., Wheeler, M., Chen, R., Klein, T., Dewey, F., Dudley, J., Ormond, K., Pavlovic, A., & Morgan, A. (2010) Clinical assessment incorporating a personal genome. The Lancet, 375(9725), 1525-1535. DOI: 10.1016/S0140-6736(10)60452-7
A complete and utter failure? You decide. Last fall I had the bright idea to track overwinter survival and subsequent spring conditioning for scallops released in different habitats (eelgrass - their preferred habitat, see Thayer and Stuart 1974; Codium fragile - an introduced macroalgae which we think might serve as a suitable alternate substrate in the absence of eelgrass; and unvegetated, as a baseline for comparison). I have examined these habitats for growth in juvenile scallops and have ........ Read more »
Thayer, GW, & Stuart, HH. (1974) The bay scallop makes its bed of seagrass. Marine Fisheries Review, 27-30. info:/
"Despite the focus on the increase in portion sizes and the possible role in the development of obesity, little is known about how portion sizes are determined in restaurants." This is how an intriguing discussion of Chefs and their restaurant food size practices begins. The study aslo notes that eating out has gone up from 2.3x's a week in 1981 to 5 times in 2000. Within that period we know ... Read more »
Harnack, L., Steffen, L., Arnett, D., Gao, S., & Luepker, R. (2004) Accuracy of estimation of large food portions☆. Journal of the American Dietetic Association, 104(5), 804-806. DOI: 10.1016/j.jada.2004.02.026
Wansink B, Painter JE, & North J. (2005) Bottomless bowls: why visual cues of portion size may influence intake. Obesity research, 13(1), 93-100. PMID: 15761167
by Vincent Racaniello in virology blog
Google Flu Trends uses analysis of large numbers of search queries to track influenza-like illness in a population. The idea is that the frequency of certain queries correlates with the percentage of physician visits in which a patient presents with influenza-like symptoms. Google claims that it can accurately estimate the level of weekly influenza activity [...]... Read more »
Ginsberg, J., Mohebbi, M., Patel, R., Brammer, L., Smolinski, M., & Brilliant, L. (2008) Detecting influenza epidemics using search engine query data. Nature, 457(7232), 1012-1014. DOI: 10.1038/nature07634
My work on time in the digital realm is coming slowly but surely. At the moment I'm thinking of multiple temporalities and the ways in which we occupy these dimensions while adhering to standardized time. Birth (2007) explores these issues with an article that deals with the conflicts that can arise out of a meeting of biology, clock, sun, and sociality. Birth raises a point in particular that
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Birth, K. (2007) Time and the Biological Consequences of Globalization. Current Anthropology, 48(2), 215-236. DOI: 10.1086/510472
Ebola virus (EBOV) and Marburg virus (MARV) are related pathogens that cause hemorrhagic fevers. In many cases, viral infections are fatal. Both viruses are native to Africa where outbreaks have been occurring for decades. There is no effective therapy for the hemorrhagic fevers caused by these viruses. EBOV and MARV are in the same taxonomic family and are structurally identical; however, they elicit different antibodies. Enterlein et al.* used the AmpliScribe™ T7 High Yield Transcription Kit........ Read more »
Enterlein, S. et al. (2009) The Marburg Virus 3' Noncoding Region Structurally and Functionally Differs from That of Ebola Virus. Journal of Virology, 83(9), 4508-4519. DOI: 10.1128/JVI.02429-08
Could punishing bad behavior be the origin of human cooperation?Humans are one of the most cooperative species on the planet. Our ability to coordinate behavior and work collaboratively with others has allowed us to create the natural world's largest and most densely populated societies, outside of deep sea microbial mats and a few Hymenoptera mega-colonies.
A key problem........ Read more »
Boyd, R., Gintis, H., & Bowles, S. (2010) Coordinated Punishment of Defectors Sustains Cooperation and Can Proliferate When Rare. Science, 328(5978), 617-620. DOI: 10.1126/science.1183665
Last week ParticipACTION and the Canadian Society for Exercise Physiology (CSEP) released recommendations for updated Canadian Physical Activity Guidelines. The previous guidelines were released between 1998 and 2002, and although they were based on the best research available at the time, from what I understand there simply wasn't a tremendous amount of evidence to draw on in some situations. Since then there have been a number of advances in physical activity research, allowing for the........ Read more »
Janssen I, & Leblanc AG. (2010) Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. The international journal of behavioral nutrition and physical activity, 7(1), 40. PMID: 20459784
Baddum-tish! OK, they don't chew their cud, but I can never resist a good pun (although I was seriously considering "Ruminations on the way fish eat" - better?). I just love this new paper by Gintof et al. about how fish chew, mostly because its an idea that I never would have ever considered. Basically, they explored whether fish just bolt their food, like lizards and snakes, or whether they ... Read more »
Gintof C, Konow N, Ross CF, & Sanford CP. (2010) Rhythmic chewing with oral jaws in teleost fishes: a comparison with amniotes. The Journal of experimental biology, 213(Pt 11), 1868-75. PMID: 20472774
According to a Senior Lecturer in Computing Joanne Kuzma [...]Post from: David Bradley's Sciencetext Tech TalkSCAN for privacy in e-government
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Joanne Kuzma. (2010) An examination of privacy policies of US Government Senate websites. Electronic Government, An International Journal, 7(3), 270-280. info:/
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