Note down in your Learning Journal what you think are the advantages and disadvantages of looking at the title before and after starting to w
Author(s): The Open University
1.2 Resource availability and species diversity
A wide range of ecosystems has been studied in terms of their species diversity and the availability of resources. Each produces an individual relationship between these two variables, but a common pattern emerges from most of them, especially when plant diversity is being considered. This pattern has been named the humped-back relationship and suggests diversity is greatest at intermediate levels of productivity in many systems (Figure 1.5).
Author(s):
The Open University10.7.1 First to market
Some companies have an offensive strategy in which they aim to be first to market with a new product. Such companies can be a major source of new products. This is risky as it requires a large investment in developing the product and cultivating the market before any return can be expected from sales. However it can be the most rewarding strategy, especially if the market can be sustained by continual incremental improvements to the product and the market share defended against competi
Author(s): The Open University
Short A Sound - Fruity ABC
This video is a snippet from the "Fruity ABC" learning DVD. It focuses on letter a. It tells the name of the letter a, make the short a sound a few times, then shows a picture of an apple, which begins with short a. The video ends with the word "apple" being spelled out on the screen and sounded out phonetically. (:52)
Author(s): No creator set
3.4 The Eddington Limit
Thus the observations require that a luminosity of around 100 times that of the entire Milky Way Galaxy be generated within a region with a diameter only about 1000 times that of the Earth's orbit! (A truly amazing statement.)
The most obvious mechanism for generating such enormous luminosity within such a tiny region of space is an accretion process, but instead of perhaps more familiar compact stars with masses ~M![]()
Author(s): The Open University
Acknowledgements
SPECIAL RESTRICTIONS – THIS COURSE MAY NOT BE ALTERED. SEE CREATIVE COMMONS LICENCE.
The materials for this course (W223) Company law in context have been made available by The College of Law for use in OpenLearn under a Creative Commons Attribution-non-commercial-No-Derivative Works 2.0 licence. This means that the materials may be used with acknowledgement to The College of Law for non-commercial purposes only and may not be altered or adapted in any way without prior permiss
Author(s): The Open University
3.6 Protein kinases
Protein kinases phosphorylate proteins either at tyrosine residues (tyrosine kinases), or at serine and threonine residues (serine–threonine kinases), or on any of these three amino acids (dual-specificity kinases). All these activities are employed in signal transduction pathways (histidine kinases also operate in certain plant and bacterial pathways, but not in animals). You should now be familiar with receptor tyrosine kinases, and have seen in some detail how phosph
Author(s): The Open University
6.1 Concentrating energy
As far as human needs are concerned, there is a marked difference between 'dilute' and 'concentrated' energy. Water vapour in the atmosphere, for example, has considerable Author(s):
The Open University
1.3: Summing vectors given in geometric form
The following activity illustrates how the conversion
processes outlined in the preceding sections may come in useful. If
two vectors are given in geometric form, and their sum is sought in
the same form, one approach is to convert each of the vectors into
component form, add their corresponding components, and then convert
the sum back to geometric form.
Author(s):
The Open University
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