what can fossils tell us about extinct animals

... alka- Editorial What do biomarkers tell us about the pathogenesis of ankylosing spondylitis? Walter P Maksymowych Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2S2 Canada Corresponding ... clearly not feasible in the spine and limited analysis has focused on associations with MRI scores for spinal inflammation. Significant correlations have been reported with interleukin-6 and vasoactive ... major priority for investigation in AS because of the generally slow rate of progression of radiographic change [2]. Such a biomarker could then be used to enrich for rapid progressors in trials...

Ngày tải lên: 09/08/2014, 01:22

... into this world from volcanic smokestacks and deep sea bubbles of poisonous greenhouse gas burped out of the sea but one of a series of such mass extinctions, greenhouse extinctions, the rule ... just then becoming accustomed to impact as a general cause of mass extinction, this discovery came as a mild shock—mild, because it was largely overlooked by those searching for impact-caused ... species went extinct, it seemed to have lasted at least several thousand years, and there appeared to be smaller-scale extinctions both prior to and soon after this. Thus, the land fossils seemed...

Ngày tải lên: 08/04/2014, 01:22

... Corsican populations by using the three microsatellites or each microsatellite separately (figures 3A to 3D). The Devinas population was tested and was found to be of Corsican origin by using ... Derory et al. J. Derory et al.Genetic diversity in P. pinaster Original article What can nuclear microsatellites tell us about maritime pine genetic resources conservation and provenance certification ... value, while significantly different from 0. Differentiation was highly significant for all pairs of groups (all cases P < 0.0000). 3.5. Use of nuclear microsatellites to distinguish Corsican from Aquitaine...

Ngày tải lên: 08/08/2014, 14:20

... Health Open Access Research Internationally trained pharmacists in Great Britain: what do registration data tell us about their recruitment? Ellen I Schafheutle* and Karen Hassell Address: Centre ... were compared using a one-way ANOVA, and least significant difference/Bon- ferroni confirms that significant differences exist between all group means except for GB-registered versus adjudica- tion ... beginning of August, thus enabling longitudinal analysis of developments on the Register. The research team has obtained copies of these extracts since 2002. The anonymized August 2007 Register...

Ngày tải lên: 18/06/2014, 17:20

... ways we cannot anticipate. Static mod- elscannot keep pacewiththe long-termevolutionof the realworld,not justbecause their data and underlying algorithms are inevitably flawed, but because the ... precisely and confidently. Astro- nomical and satellite orbital predictions are a clear example. Satellite orbits can be calculated with enormous precision because orbital mechanics passes these tests. ... that led, fortuitously, to about the right outcome in 1980. The RFF forecasts become increasingly high in the 1980–2000 period as actual energy use continued to lag projected use (141 EJ primary...

Ngày tải lên: 24/03/2014, 01:21

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Ngày tải lên: 14/08/2014, 21:20

... caused about 10% of failures, software about 20%, and system management a bit over 50% [15]. Our study is similar in spirit to two studies of net- work failure causes: Mahajan examined the causes ... community about why large-scale systems fail, and what techniques could prevent failures. In an attempt to answer the question “Why do Internet ser- vices fail, and what can be done about it?” ... tools operators use to administer services are not just primitive and difficult to use, they are also brittle. Although we did not collect detailed statistics about failures in systems used for ser- vice...

Ngày tải lên: 06/03/2014, 21:20

... the familiar proverb ‘You can lead a horse to water but you cannot make it drink’, and the deviation from the recognizable structure causes the viola- tion of our expectations. Thus, access is not re- stricted ... dis- course. This is discussed in more detail later. 2.1 Lexicons for Discourse modeling Pustejovsky’s Generative Lexicon (GL) model (Pustejovksy, 1995) outlines an ambitious attempt to formulate ... (4) results from the polyse- mous use of the word bar. The first sentence leads us to believe that bar is a place where one drinks, but the second sentence forces us to revise our in- terpretation...

Ngày tải lên: 24/03/2014, 03:20

Ngày tải lên: 06/07/2014, 15:30

... detected by antibodies against the original virus and cause annual, or biennial, ‘seasonal’ influenza outbreaks. Such a virus can spread across the USA within a single month. New HA and NA types ... because the proteins do not fold appropriately. The more commonly used killed vaccines are made from viruses in- activated in formalin or β-propio- lactone and used either as a whole virus or ... been adapted to replicate poorly so that they do not cause disease. Live- attenuated influenza virus vaccines were long in use in the former Russian Federation, but their broader availa- bility...

Ngày tải lên: 06/08/2014, 19:20

... the other hand can be more easily recorded. Thus the IR technique is especially suitable e.g. for relatively short-term testing of methods, while limited num- ber of thermocouples can be applied ... J S can be computed. Only experience with the newly to be developed hardware will show what degree of perfection these proposed improved sap measurement tech- niques may develop. In conclusion ... 10.1051/forest:2006046 Original article Infrared images of heat fi elds around a linear heater in tree trunks: what can be learned about sap flow measurement? Helmut T a * , Nadezhda N  b ,JanC b a Hahn-Meither...

Ngày tải lên: 07/08/2014, 16:20

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Ngày tải lên: 12/08/2014, 15:22