Graphene is one of the hottest research areas in nanotechnology, and it may seem slightly surprising it took me a month to write my first blog post on the topic. That moment has now come, with the advance publication of a Nature paper that presents highly attractive graphene transistor, even though in my humble opinion [...]... Read more »
Liao, L., Lin, Y.-C., Bao, M., Cheng, R., Bai, J., Liu, Y., Qu, Y., Wang, K. L., Huang, Y., & Duan, X. (2010) High-speed graphene transistors with a self-aligned nanowire gate. Nature. DOI: 10.1038/nature09405
One of the things I sometimes find myself writing about is the “bad” language used by physicists. Sometimes we say Riemannian when we really should say psuedo-Riemannian, sometimes we call something a metric when it really is a line element – the kind of nitpicky pet-peeves that practically everyone has about literature in their field. Today, I’m going to be talking about the bad language in physics in a totally different context however.... Read more »
ALPER ÜNGÖR, & ALLA SHEFFER. (2002) PITCHING TENTS IN SPACE-TIME: MESH GENERATION FOR DISCONTINUOUS GALERKIN METHOD. International Journal of Foundations of Computer Science , 13(2). info:/10.1142/S0129054102001059
I recently came across a very interesting study published in Circulation in 2001. In it, authors Darren McGuire and colleagues perform the 30-year follow-up on a group of 5 men who had taken part in the Dallas Bed Rest and Training Study (DBRTS). The DBRTS took place in 1966, when all 5 men were healthy 20 year-olds. They were assessed extensively at 3 different time points: baseline, following 3 months of bed rest, and following 8 weeks of physical training. In 1996 these same 5 men were as........ Read more »
McGuire DK, Levine BD, Williamson JW, Snell PG, Blomqvist CG, Saltin B, & Mitchell JH. (2001) A 30-year follow-up of the Dallas Bedrest and Training Study: I. Effect of age on the cardiovascular response to exercise. Circulation, 104(12), 1350-7. PMID: 11560849
Nobody’s against cleaner, greener neighborhoods. But some social scientists have worried that cleaning up could end up clearing out the poor residents who often live around polluted sites. Now, a study from Portland, Oregon looks for a link between gentrification and environmental clean-up.
Researchers have long documented the impact of LULUs — “locally undesirable land […] Read More »... Read more »
Eckerd, Adam. (2010) Cleaning Up Without Clearing Out? A Spatial Assessment of Environmental Gentrification. Urban Affairs Review. DOI: 10.1177/1078087410379720
From Critical Social Policy Over recent years there has been concern about the future sustainability of UK pensions mainly linked with the increase in life expectancy of the general population. The government and pensions industry face the difficult challenge of satisfying two potentially contrasting demands: to ensure that government pension spending remains stable and also [...]... Read more »
Liam Foster. (2010) Towards a new political economy of pensions? The implications for women. Critical Social Policy, 30(1), 27-47. info:/10.1177/0261018309350807
“You’re probably wondering why I’m here”, were the first words of Edward Marcotte’s talk at the SDB meeting last month. After all, he was about to speak about systems biology in a session on organogenesis. What followed was not only a new way to identify genes involved in developmental processes, but also a perfect example [...]... Read more »
Kriston L. McGary, Tae Joo Park, John O. Woods, Hye Ji Cha, John B. Wallingford, & Edward M. Marcotte. (2010) Systematic discovery of nonobvious human disease models through orthologous phenotypes. PNAS. DOI: 10.1073/pnas.0910200107
As mentioned in the previous post, last week I was attending the Information Interaction in Context Symposium held in New Brunswick, USA.
At the poster session, I and my student Justin Wong (left in the photo) from the University of Toronto, presented our ongoing work on the development and evaluation of a context-aware information retrieval system for blog authors called CONTEXT.... Read more »
Gruzd, A. and Wong, J. (2010) Blogging with CONTEXT: a context-aware information retrieval system for bloggers. In Proceeding of the Third Symposium on information interaction in Context, 289-292. info:/10.1145/1840784.1840827
Coevolution is a really cool evolutionary process in which a genetically driven change in the phenotype of one species is responsible for a change in the evolutionary pressures on a second species. The term was coined in the 1960s, and the concept (formalized by Janzen in 1980) is receiving an increasing interest ever since. One [...]... Read more »
James W Demastes, & Mark Hafner. (1993) Cospeciation of Pocket Gophers (Geomys) and Their Chewing Lice (Geomydoecus) . Journal of Mammalogy, 74(3). DOI: 10.2307/1382271
Yves Desdevises, Serge Morand, Olivier Jousson, & Pierre Legendre. (2002) Coevolution between Lamellodiscus (Monogenea: Diplectanidae) and Sparidae (Teleostei): The Study Of a Complex Host-Parasite System. Evolution, 14(12). DOI: 10.1111/j.0014-3820.2002.tb00171.x
Strauss SY, Sahli H, & Conner JK. (2005) Toward a more trait-centered approach to diffuse (co)evolution. The New phytologist, 165(1), 81-89. PMID: 15720623
Lynn Swafford, & Jason E Bond. (2010) Failure to cospeciate: an unsorted tale of millipedes and mites. Biological Journal of the Linnean Society. info:/10.1111/j.1095-8312.2010.01499.x
In the September issue of GSA Today, you can find our article on The Internet as a resource and support network for diverse geoscientists. Where do we go from here? Continue reading →... Read more »
Jefferson, A.J., Hannula, K.A., Campbell, P.B., & Franks, S.E. (2010) The Internet as a resource and support network for diverse geoscientists. GSA Today, 20(9), 59-61. info:/10.1130/GSATG91GW.1
The cover article for last week's issue of Nature promised to be the last word in a long-running scientific argument over the evolution of cooperation—but it really just rejiggers the terms of the debate. Instead of solving the problem of how cooperative behavior can evolve, the new paper presents a model of maternal enslavement [$a]. These are not, it turns out, quite the same thing.
Group selection versus kin selection
Let's start with some background. Unselfish, cooperative behavior has l........ Read more »
Promoting microbial degradation of oil has been one of the main arguments in favor of dispersant use. Interestingly, the PWSRCAC review (covering literature from 1997-2008) did not identify any recent study that explicitly found dispersant use enhancing the biodegradation of oil. Actually, ~50% of studies found that chemical additives inhibited microbial degradation and the other half . . . → Read More: Dispersants! Part III: Do dispersants really promote degradation of oil?... Read more »
Venosa AD, & Holder EL. (2007) Biodegradability of dispersed crude oil at two different temperatures. Marine pollution bulletin, 54(5), 545-53. PMID: 17316707
Yoshida A, Nomura H, Toyoda K, Nishino T, Seo Y, Yamada M, Nishimura M, Wada M, Okamoto K, Shibata A.... (2006) Microbial responses using denaturing gradient gel electrophoresis to oil and chemical dispersant in enclosed ecosystems. Marine pollution bulletin, 52(1), 89-95. PMID: 16202430
There are thousands of lipid species in our bodies that represent 6 categories, but we only usually hear about the subcategories of cholesterol and triglycerides. We don’t yet understand how they are all altered in response to various nutrients, dietary … Continue reading →... Read more »
Quehenberger O, Armando AM, Brown AH, Milne SB, Myers DS, Merrill AH, Bandyopadhyay S, Jones KN, Kelly S, Shaner RL.... (2010) Lipidomics reveals a remarkable diversity of lipids in human plasma. Journal of lipid research. PMID: 20671299
Earlier this year (in June), Channel 4 television here in the UK broadcast series 2 of Inside Nature's Giants (ING from hereon... titled Raw Anatomy in the US, you poor, poor people). You may have heard it here first. Hopefully you're familiar with ING series 1 - it looked at the anatomy of elephants, baleen whales, crocodiles and giraffes - and, if you're not, be sure to check out the Tet Zoo articles starting here. My praise for series 1 was extreme, by which I mean that I thought it was e........ Read more »
Dickson KA, & Graham JB. (2004) Evolution and consequences of endothermy in fishes. Physiological and biochemical zoology : PBZ, 77(6), 998-1018. PMID: 15674772
Let me take the ball Mark Liberman threw on Monday and run with it a bit. Liberman posted a thorough discussion of Fausey and Broditsky's neo-Whorfian English and Spanish speakers remember causal agents differently. Specifically, he invited readers to carefully examine the methodology of the experiments themselves, and not just focus on the conclusions. It turns out that a few years ago another set of neo-Whorfians, Jürgen Bohnemeyer and company, published a paper that addressed similar me........ Read more »
Jürgen Bohnemeyer, Sonja Eisenbeiss, & Bhuvana Narasimhan. (2006) Ways to go: Methodological considerations in Whorfian studies on motion events. ESSEX RESEARCH REPORTS IN LINGUISTICS, 1-19. info:other/
Earlier this week, I commented in passing about the ubiquity of phosphorylation as a way of regulating protein activity in eukaryotes. It’s been estimated that somewhere in the region of 1/3 to 1/2 of proteins are — at some time, under some circumstances — phosphorylated on serine, threonine or tyrosine, causing changes in protein behavior that [...]... Read more »
Gnad F, Forner F, Zielinska DF, Birney E, Gunawardena J, & Mann M. (2010) Evolutionary constraints of phosphorylation in eukaryotes, prokaryotes and mitochondria. Molecular . PMID: 20688971
Resilience is in psychiatry the positive capacity of people to cope with stress and catastrophe. In this post it’s used as having an adaptive system that uses exposure to stress to provide resistance to future negative events.
Stress can lead to depression accompanied by atrophy and loss of neurons in the adult hippocampus in experimental [...]
Related posts:Were is Depression Located in the Brain?
Adolescents brain and Depression
Neurobiology of Psychosocial Stress and Depression
... Read more »
Thomas Frodl,, Angela Carballedo1,, Andrew J. Fagan,, Danusia Lisiecka1,, Yolande Ferguson,, Ian Daly,, James F. Meaney,, & Dermot Kelleher. (2010) Microstructural Correlates of Resilience against Major Depressive Disorder: Epigenetic Mechanisms?. Nature Precedings. info:/
A model to predict rate of dissolution of toxic compounds into seawater from an oil spill From International Journal of Toxicology As we witness with dismay the media images of the environmental consequences of the current large scale oil spills there is an urgency to find effective ways of dealing with such incidents. Hundreds of [...]... Read more »
Riazi, M., & Roomi, Y. (2008) A Model to Predict Rate of Dissolution of Toxic Compounds into Seawater from an Oil Spill. International Journal of Toxicology, 27(5), 379-386. DOI: 10.1080/10915810802503578
Mendeley is a handy piece of desktop and web software for managing and sharing research papers . This popular tool has been getting a lot of attention lately, and with some impressive statistics it’s not difficult why. At the time of writing Mendeley claims to have over 36 million papers, added by just under half a [...]... Read more »
For overweight and obese women, loss of between five and 10% of body weight significantly reduces urine leakage. According to the research report in last month’s Obstetrics & Gynecology journal, weight loss should be the first approach to urine leakage in overweight and obese women.
The other word for urine leakage is incontinence: an involuntary loss of [...]... Read more »
Wing RR, Creasman JM, West DS, Richter HE, Myers D, Burgio KL, Franklin F, Gorin AA, Vittinghoff E, Macer J.... (2010) Improving urinary incontinence in overweight and obese women through modest weight loss. Obstetrics and gynecology, 116(2 Pt 1), 284-92. PMID: 20664387
For researchers and practitioners alike it is important to differentiate supply chain strategies.
Not only Fisher (1997) showed, that there is no one-fits-all supply chain. But what are the criteria for should be used for supply chain segmentation?
Fisher focusses on on the product only, and he concludes, that a standard/functional product should be processed by a lean supply chain and innovative products by agile supply chains.
Continue reading "Segmenting Supply Chain Strat........ Read more »
Brun, A., & Castelli, C. (2008) Supply chain strategy in the fashion industry: Developing a portfolio model depending on product, retail channel and brand. International Journal of Production Economics, 116(2), 169-181. DOI: 10.1016/j.ijpe.2008.09.011
Fischer, Marshall L. (1997) What is the Right Supply Chain for Your Product?. Harvard Business Review, 105-116. info:/
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