A recent meta-analysis examined the relationship between various Internet uses and well being. The studies published until know is mostly about the discussion whether using Internet for communication with e-mail replaces other forms of communication such as using the phone, chat or face to face contact. Contact through e-mail, facebook, twitter and such replaces real [...]
Related posts:Internet Cool Tools for Physicians This is an excellent book for physicians to read...
Will Online Chat Al........ Read more »
Huang, C. (2009) Internet Use and Psychological Well-being: A Meta-Analysis. CyberPsychology , 2147483647. DOI: 10.1089/cpb.2009.0217
Physicists are loath to break the laws by which the universe works when putting together their equations. They don’t fear a trip to physics jail or anything like that, but if their work requires a massive rearrangement of what we seem to understand, they tend to take it as a sign that somewhere along the [...]... Read more »
Gerard 't Hooft. (2009) Quantum gravity without space-time singularities or horizons. Erice Summerschool of Subnuclear Physics. arXiv: 0909.3426v1
Atonement is a funny concept. Essentially, it's the idea that you can cancel out a wrongdoing not by doing a good deed, but by engaging in some act of self-punishment.Although the classic example comes from Christianity (the tortured death of Jesus) similar concepts of penance are widespread in other religions. Penance goes beyond the more normal concepts of justice (revenge and punishment) because it's voluntary.Perhaps there's more going on here than meets the eye. Rob Nelissen and Marcel Zeel........ Read more »
Nelissen RM, & Zeelenberg M. (2009) When guilt evokes self-punishment: evidence for the existence of a Dobby Effect. Emotion (Washington, D.C.), 9(1), 118-22. PMID: 19186924
Tiktaalik is practically a household name. Since its description in 2006 the flat-headed "fishapod" has appeared in books, on t-shirts, and has even starred in its own music video. Hailed as a "missing link", Tiktaalik has become a poster child fossil for evolution, but it is hardly the first such creature to be given this honor. Read the rest of this post... | Read the comments on this post...... Read more »
Niedźwiedzki, G., Szrek, P., Narkiewicz, K., Narkiewicz, M., & Ahlberg, P. (2010) Tetrapod trackways from the early Middle Devonian period of Poland. Nature, 463(7277), 43-48. DOI: 10.1038/nature08623
What's the motivation for innovation in healthcare, and does any degree of socialization at any level have an impact?... Read more »
Conrad, D., & Perry, L. (2009) Quality-Based Financial Incentives in Health Care: Can We Improve Quality by Paying for It?. Annual Review of Public Health, 30(1), 357-371. DOI: 10.1146/annurev.publhealth.031308.100243
Riding on the heels of Copenhagen, a study published yesterday in the Proceedings of the National Academy of Sciences outlined one way the United States might address enormous CO2 emission levels. Not surprisingly, the researchers propose carbon sequestration; it is the location, however, that makes this study unique.
The scientists have pinpointed volcanic rock, namely [...]
... Read more »
Goldberg, D., Kent, D., & Olsen, P. (2010) Potential on-shore and off-shore reservoirs for CO2 sequestration in Central Atlantic magmatic province basalts. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.0913721107
UPDATE - READ COMMENTS - LEAD AUTHOR HAS GOTTEN PRESS RELEASE CHANGED
A new paper just showed up on PLoS One and it has some serious potential to be important The paper (PLoS ONE: The Effects of Circumcision on the Penis Microbiome) reports on analyses that show differences in the microbiota (which they call the microbiome - basically what bacterial species were present) in men before and after circumcision. And they found some significant differences. It is a nice study of a relatively poo........ Read more »
Price, L., Liu, C., Johnson, K., Aziz, M., Lau, M., Bowers, J., Ravel, J., Keim, P., Serwadda, D., Wawer, M.... (2010) The Effects of Circumcision on the Penis Microbiome. PLoS ONE, 5(1). DOI: 10.1371/journal.pone.0008422
Copy number aberrations (CNAs) represent one of the most prevalent genetic alterations in cancer cells. There is considerable interest in finding CNAs that affect the same chromosomal region in multiple tumor samples. Recurrent CNA (RCNA) implies the presence of key cancer genes; on chromosome 7, for example, we often see amplification of the region containing [...]... Read more »
Zhang Q, Ding L, Larson DE, Koboldt DC, McLellan MD, Chen K, Shi X, Kraja A, Mardis ER, Wilson RK.... (2009) CMDS: a population-based method for identifying recurrent DNA copy number aberrations in cancer from high-resolution data. Bioinformatics (Oxford, England). PMID: 20031968
In the past, I have mentioned that physical activity and sleep time are positively related - the more physical activity you perform, the more sleep you are likely to get. Now most of these past studies have been observational, so we have a bit of a chicken and egg problem. By that I mean that we don't know whether:
A) Sleep deprivation causes reductions in physical activity,
B) High levels of physical activity make people sleepier, or
C) Some combination of A & B
Fortunately, an in........ Read more »
Schmid, S., Hallschmid, M., Jauch-Chara, K., Wilms, B., Benedict, C., Lehnert, H., Born, J., & Schultes, B. (2009) Short-term sleep loss decreases physical activity under free-living conditions but does not increase food intake under time-deprived laboratory conditions in healthy men. American Journal of Clinical Nutrition, 90(6), 1476-1482. DOI: 10.3945/ajcn.2009.27984
This is a post about Shoes not as evil, but as it seems a Great Feat of Misdirection. It's a wee bit about our biases towards single factor solutions for complex problems, and the arguments we will have around the Chosen Factor rather than pulling up and back to consider the wider view. In science, there's a strong bias towards studying the effect of a single factor in various circumstances, but you'll rarely find a scientist who will say that single factor study or finding is The........ Read more »
Kerrigan, D., Franz, J., Keenan, G., Dicharry, J., Della Croce, U., & Wilder, R. (2009) The Effect of Running Shoes on Lower Extremity Joint Torques. PM, 1(12), 1058-1063. DOI: 10.1016/j.pmrj.2009.09.011
Knapik JJ, Swedler DI, Grier TL, Hauret KG, Bullock SH, Williams KW, Darakjy SS, Lester ME, Tobler SK, & Jones BH. (2009) Injury reduction effectiveness of selecting running shoes based on plantar shape. Journal of strength and conditioning research / National Strength , 23(3), 685-97. PMID: 19387413
by Nestor Lopez-Duran PhD in Child-Psych
December was a good month for the US military in Iraq; not a single casualty was reported. Unfortunately, the story was not as rosy in Afghanistan, where 20 service members died -not including the 7 CIA officers who tragically died last week. When we see footage of military funerals on films (e.g., Kavin Bacon’s “Taking Chance”), [...]... Read more »
Chandra, A., Lara-Cinisomo, S., Jaycox, L., Tanielian, T., Burns, R., Ruder, T., & Han, B. (2009) Children on the Homefront: The Experience of Children From Military Families. PEDIATRICS, 125(1), 16-25. DOI: 10.1542/peds.2009-1180
Inferential models of language learning specify how perceptual maps can be divided up to be labelled with words. However, no models currently allow bilingualism. Some proposals are made as to how to achieve this.... Read more »
Au TK, & Glusman M. (1990) The principle of mutual exclusivity in word learning: to honor or not to honor?. Child development, 61(5), 1474-90. PMID: 2245739
Byers-Heinlein K, & Werker JF. (2009) Monolingual, bilingual, trilingual: infants' language experience influences the development of a word-learning heuristic. Developmental science, 12(5), 815-23. PMID: 19702772
Grassmann S, Stracke M, & Tomasello M. (2009) Two-year-olds exclude novel objects as potential referents of novel words based on pragmatics. Cognition, 112(3), 488-93. PMID: 19616205
Healey, E. and Scarabela, B. (2009) Are children willing to accept two labels for one object?. Proceedings of the Child Language Seminar. University of Reading. info:/
Studying the genetics of cancer often involves looking specifically at cancerous cells (that is, tumor cells) and asking what is different about those cells than the regular cells they were before.
For example, what mutations are present in the DNA of a cancer cell, that could be the cause of the cancer? Also… different genes could [...]... Read more »
Cruickshanks, H., & Tufarelli, C. (2009) Isolation of cancer-specific chimeric transcripts induced by hypomethylation of the LINE-1 antisense promoter. Genomics, 94(6), 397-406. DOI: 10.1016/j.ygeno.2009.08.013
(R. Carswell, 1831)
In contrast to the many viruses that block antigen presentation by MHC class I, only a handful appear to block presentation by MHC class II. I don’t understand why any would try to block MHC class II in the first place, but another example of it has just been published.
A little [...]... Read more »
Rehm, K., Connor, R., Jones, G., Yimbu, K., & Roper, R. (2009) Vaccinia virus A35R inhibits MHC class II antigen presentation. Virology. DOI: 10.1016/j.virol.2009.11.008
One of the key claims of the "autism biomedical" movement is that something about autism derives from or is exacerbated by the gut; i.e., that there is some sort of link between GI problems, particularly inflammatory diseases of the GI tract, and autism. Although I may not be as versed in the history of this claim as I could be, as far as I can tell, even if this idea didn't originate with Andrew Wakefield, he certainly did a lot to popularize it. Indeed, a common misconception about his misbego........ Read more »
Buie, T., Campbell, D., Fuchs, G., Furuta, G., Levy, J., VandeWater, J., Whitaker, A., Atkins, D., Bauman, M., Beaudet, A.... (2010) Evaluation, Diagnosis, and Treatment of Gastrointestinal Disorders in Individuals With ASDs: A Consensus Report. PEDIATRICS, 125(Supplement). DOI: 10.1542/peds.2009-1878C
Buie, T., Fuchs, G., Furuta, G., Kooros, K., Levy, J., Lewis, J., Wershil, B., & Winter, H. (2010) Recommendations for Evaluation and Treatment of Common Gastrointestinal Problems in Children With ASDs. PEDIATRICS, 125(Supplement). DOI: 10.1542/peds.2009-1878D
What? Fleas in Winter???
If you’ve seen a tiny assortment of purple, bouncing specks in your snow, you might be looking at springtails. Don’t worry, they aren’t real fleas–they just bounce around in a similar way.
Also, they are probably the cutest dang little things you’ve ever seen! Their tiny size is why you probably don’t know [...]... Read more »
Sinclair, B., & Sjursen, H. (2004) Cold tolerance of the Antarctic springtail Gomphiocephalus hodgsoni (Collembola, Hypogastruridae). Antarctic Science, 13(03). DOI: 10.1017/S0954102001000384
Duman, J. (2001) ANTIFREEZE AND ICE NUCLEATOR PROTEINS IN TERRESTRIAL ARTHROPODS. Annual Review of Physiology, 63(1), 327-357. DOI: 10.1146/annurev.physiol.63.1.327
Pentelute, B., Gates, Z., Dashnau, J., Vanderkooi, J., & Kent, S. (2008) Mirror Image Forms of Snow Flea Antifreeze Protein Prepared by Total Chemical Synthesis Have Identical Antifreeze Activities. Journal of the American Chemical Society, 130(30), 9702-9707. DOI: 10.1021/ja801352j
Late last year, Science published a bombshell - Lombardi et al's Detection of an infectious retrovirus, XMRV, in blood cells of patients with chronic fatigue syndrome. This paper reported the presence of a recently-discovered virus in 67% of the blood samples from 101 people with chronic fatigue syndrome (CFS).The question of whether people with CFS are suffering from an organic illness, or whether their condition is partially or entirely psychological in nature, is the Israel vs. Palestine........ Read more »
Erlwein, O., Kaye, S., McClure, M., Weber, J., Wills, G., Collier, D., Wessely, S., & Cleare, A. (2010) Failure to Detect the Novel Retrovirus XMRV in Chronic Fatigue Syndrome. PLoS ONE, 5(1). DOI: 10.1371/journal.pone.0008519
Lombardi VC, Ruscetti FW, Das Gupta J, Pfost MA, Hagen KS, Peterson DL, Ruscetti SK, Bagni RK, Petrow-Sadowski C, Gold B.... (2009) Detection of an infectious retrovirus, XMRV, in blood cells of patients with chronic fatigue syndrome. Science (New York, N.Y.), 326(5952), 585-9. PMID: 19815723
Figure 1: Aristarchus measured the angle between the Sun and the Moon when the moon was half full, then used trigonometry to measure the distance to the Sun. (Source: Wikipedia) In an earlier post I wrote about how astronomers can...... Read more »
Hirst, W. (1769) Account of Several Phaenomena Observed during the Ingress of Venus into the Solar Disc. By the Reverend W. Hirst, F. R. S. in a Letter to the Astronomer Royal. Philosophical Transactions (1683-1775), 59(1), 228-235. DOI: 10.1098/rstl.1769.0031
In all the Christmas festivities, snow-induced transport chaos, knicker-bombers and New Year-induced academic slackness you might have missed a new report on a forgotten but important conflict in Sumatra (published in Cambridge University Press’s Oryx; your Athens login should get you in).
Turns out that humans and pachyderms are locked in a deadly struggle for survival, [...]... Read more »
Hedges, S., & Gunaryadi, D. (2009) Reducing human–elephant conflict: do chillies help deter elephants from entering crop fields?. Oryx, 44(01), 139. DOI: 10.1017/S0030605309990093
A new study from Southern California affirms that the long-standing management practice of beach grooming is contributing to the loss of coastal strand habitat. Coastal strand plant communities grow along the edge of the high tide line and are comprised largely of endemic species adapted to grow in the dynamic, environment of loose, shifting sand...... Read more »
Dugan, J., & Hubbard, D. (2009) Loss of Coastal Strand Habitat in Southern California: The Role of Beach Grooming. Estuaries and Coasts. DOI: 10.1007/s12237-009-9239-8
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