Reuters Today: Upbeat China PMI lifts European investor mood
Dec. 3 - China's PMI picked up in November, prompting hopes the Chinese economy is regaining its vigour. Greece unveils details of a crucial bond buyback.
Breakingviews: Capital probe puts heat on RBS
Dec. 3 - The Bank of England questions whether banks are adequately provisioned against future losses. RBS's 66 bln pound commercial property book is one place to start asking questions, says Breakingviews.
New data shows return to risk by small businesses: PayNet
Dec. 3 - Thomson Reuters/PayNet Small Business lending index rose to 107.5 for October. PayNet President William Phelan says small businesses are optimistic and investing more, but all bets are off if a deal isn't reached on the fiscal cliff.
Wooden radio broadcasts sustainable message
Dec. 2 - An Indonesian designer and woodcrafter has transformed a grass-roots craft shop into a model of green, sustainable business practice. Singgih Susilo Kartono is the brains behind a company called Magno which produces stylish hand-made wooden radios, now in households all over the world. Tara Cleary reports.
Breakingviews: Fiscal cliff dividends
Jeffrey Goldfarb and Breakingviews columnists discuss how a wave of special dividends being paid out before year's end are indicative of how Corporate America fears higher taxes more than a recession.
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Vaccination
Vaccinations are now considered a part of everyday life, but how do they work? This unit will help those with a background in biology understand the historical development of vaccination, assess the various types of vaccines used today, examine their production and explore the limitations that are placed on vaccination programmes. First published on Tue, 04 Oct 2011
Detecting Down’s syndrome in the unborn fetus
Down's syndrome is the condition that is screened for the most in pregnant women because of the increased risk with the increasing age of mothers. This unit describes several bioanalytical tests, and how these are used in conjunction with scans to screen and diagnose the condition. First published on Fri, 20 Jul 2012 as
2.5 What does relationship mean in systematics? W. Hennig In this clip, Dr. Patterson introduces his third systematist, a German entomologist named Willi Hennig. This offers a third meaning of ‘relationship’, which is illustr 2.4 What does relationship mean in systematics? E. Mayr Dr. Patterson looks at the second of his three systematists, Ernst Mayr. Mayr’s answer to the meaning of ‘relationship’ in systematics comes from the point of view o 2.3 What does relationship mean in systematics? G.G. Simpson Dr. Patterson continues to look at Simpson’s answer to the meaning of ‘relationship’ in systematics, and illustrates this by referring to a diagrams showing how the 1.4 Grades and clades If species are grouped together because they show a similar extent of accumulated anagenetic change with respect to their ancestors, then the taxa so formed constitute grades. In Figure 1, morphological change is represented along the horizontal axis. The three columns show grades of anagenetic modification, with pa 1.3 Relationships between species Using the idea of blood relationships in people as an analogy, can you think of two distinct types of relationship between species? One is the relation 1.2 Taxa and relationships Until the mid-20th century, inferences about evolutionary relationships between species were generally based upon as wide a range of evidence as could be mustered. Evolutionary systematics is the name given to this eclectic approach, because of its explicit focus on evolutionary conclusions. The disparate nature of the evidence used (ranging from the taxonomic attributes and geographical distribution of living organisms to the stratigraphical distribution of fossils) meant that there w Learning outcomes By the end of this unit you should be able to: understand the patterns and processes of evolution above the species level appreciate the differences between the three methods of phylogenetic analysis: evolutionary systematics, phenetics, cladistics. Introduction This unit is from our archive. It is an adapted extract from the Science (S365) module that is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this Curriculum Area This unit is concerned with macroevo 1.2 Chemical elements Atoms of the same atomic number behave virtually identically in chemical reactions. They are therefore given the same chemical name and chemical symbol. For example, the atom of atomic number 6, which is shown in Figure 1, is a carbon atom, whose symbol is C. All materials are made of atoms, but there is a special class of substan Introduction This unit is an adapted extract from the course The molecular world
(S205) This unit will provide you with a detailed understanding of some of the important problems and topics that are being studied by the chemists of today, and of the ways in which associated problems might be solved by chemical methods. But to acquire this understanding you must have a good grasp of fundamental chemic 4.1 Overview One of the most surprising aspects of quantum physics is the ability of particles to pass through regions that they are classically forbidden from entering. This is the phenomenon of quantum-mechanical tunnelling that was mentioned in Session 1. In Session 4 we first demonstrate the phenomenon of tunnelling with the ai 3.1 Overview Scattering calculations using wave packets are so laborious that they are generally done numerically, using a computer. However, in many cases, scattering phenomena can be adequately treated using a procedure based on stationary states. This approach can give valuable insight into the scattering process without the need for computer simulations. Session 3 introduces the stationary-state approach to scattering. The discussion is mainly confined to one dimension, so a stationary-state sol
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