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Resource #10139
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Sesame Street: Ernie Can't Sleep

Bert sings the song "Imagination" to help Ernie go to sleep.


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Opening Keynote--John Reed
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Biosecurity dilemmas: dreaded germs, global health and scientific freedom
Which is more dangerous, bioterrorism or biodefense? When do the security risks of pathogen research outweigh the health benefits? Is there too little or too much biosecurity regulation of Australian laboratories and scientists? Does the language of security advance or distort global health goals? In this public seminar, Dr Christian Enemark considers these and other dilemmas that arise when the protection of human health is placed on security policy agendas. Dr Christian Enemark is Associate
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Insurgent Intellectual: a career with global impact
Dr Nicholas Farrelly talks to Professor Desmond Ball about some of the highlights from a career that has seen him become one of the world's foremost strategy and defence experts. Over more than four decades Professor Ball has investigated a broad range of fields including, nuclear, electronic and cyber warfare, signals intelligence, Asia-Pacific security as well as Australian strategic and defence policy. He has travelled, researched and published extensively, including on sensitive topics, c
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Wealth Strategies: Fiscal Cliff a piece of fiction - Kotok
Dec. 12 - Cumberland Advisors' David Kotok says concern over the looming fiscal cliff is unwarranted and says the U.S. stock market is poised for a multi-year run.
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Fabricando mundos. Realidad, simulacro e inmanencia [Manufacturing worlds. Reality, simulacra and im
Digital manufacturing in both as art and technology is a new way of designing, re-creation and re-invention of reality. This paper considers, from an epistemological point of view, the process of digital fabrication and its hyperlinks to known and simulated reality, and its ontological nature. Through documentation and methodological approach to the construction of a Moebius strip, this paper analyzes the nature and specifications of digital manufacturing. For this purpose, it makes a study of s
Author(s): Amen, Fernando Garc?a; ?lvarez, Marcelo Payss?; Bo

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Educatief gsm-gebruik : Lespakket
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Gsm's en school: het is niet altijd een goed huwelijk. Ze kunnen soms ordeverstorend zijn. Maar anderzijds heeft bijna elke leerling er één en zou het een gemiste kans zijn om er op school geen aandacht aan te besteden. …


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Cognitive control networks in the aging brain

David Ziegler, recorded 12/5/12


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2.2 Effects on consumers in freshwater ecosystems

Increased productivity tends to increase rates of deoxygenation in the surface layer of lakes. Although phytoplankton release oxygen to the water as a byproduct of photosynthesis during the day, water has a limited ability to store oxygen and much of it bubbles off as oxygen gas. At night, the phytoplankton themselves, the zooplankton and the decomposer organisms living on dead organic matter are all respiring and consuming oxygen. The store of dissolved oxygen thus becomes depleted and diffu
Author(s): The Open University

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Core histone tail modification regulates DNA compaction

SAQ 34

What effect would neutralising the positive charges on the octamer N-terminal tails have upon the compaction of DNA by H1?

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The DPS protein compacts the eubacterial chromosome during stress

When an E. coli cell enters into stationary phase, transcription and cell division cease completely. In such cells, the normal chromatin components, such as those described above, are replaced by a negatively charged protein called DPS. The interaction between DPS and DNA appears to be a specialised bacterial adaptation to survive starvation. In normal conditions of growth, the DNA within the bacterial cell is distributed evenly throughout the entire cytoplasm. In stationary cells, how
Author(s): The Open University

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Broad-line region

In the model, the clouds of the broad-line region surround the central engine within the opening in the middle of the dust torus. The radius of the BLR is of the order of 1014 m, placing it well inside the torus. At this distance from the black hole orbital speeds are several thousand kilometres per second, which is consistent with the typical speed of 5000 km s−1 that is measured from Doppler broadening. The clouds are fully exposed to the intense radiation from the e
Author(s): The Open University

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5.1 Introduction

So far we have seen how the properties of the central engine of the AGN can be accounted for by an accreting supermassive black hole. Though there are many questions still to be resolved, this model does seem to be the best available explanation of what is going on in the heart of an AGN. But of course all AGNs are not the same. We have identified four main classes and in this section we will attempt to construct models that reproduce the distinguishing features of these four classes.


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4 Summary

  1. Many rivers are fed by springs, which occur at points where groundwater reaches the surface. Springs can occur in different geological settings, forming valley springs, stratum springs or solution channel springs.

  2. The water in a river originates from overland flow, from interflow and from baseflow. Baseflow forms a higher proportion of river water in summer than in winter, and in rivers flowing over good aquifers.

  3. River discharg
    Author(s): The Open University

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1 Geothermal energy

Although energy from the Earth's interior that flows though the surface is on average very low — about a thousand times less than the solar energy that falls on the surface — it is sufficiently abundant worldwide to make it locally worth exploiting. The top 3 km of the Earth's crust stores an estimated 4.3 × 107 EJ of thermal energy by virtue of the temperature of rocks and their thermal capacity. Because global consumption of energy during 2002 was 451 EJ heat stored within t
Author(s): The Open University

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4.5 Global distribution of coal

Figure 35 shows the global distribution of coal deposits. The major areas are principally in the Northern Hemisphere; with the exception of Australia, the southern continents are relatively deficient in coal deposits.

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3.3 Underground mining

Underground mining operations have four significant environmental impacts — spoil heaps, methane build-up, subsidence and water pollution. Spoil heaps have always been the principal surface feature of underground mining operations. However, legislation and technical advances have brought improvements in modern mines, and the closure of many of the UK's older mines has often been followed by successful rehabilitation of mine sites and spoil heaps by landscaping and tree planting.

Coal
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3.2 Structural domains

Structural domains can serve as spacers, which position other domains in an appropriate orientation or location, or they may permit movement of domains relative to each other. Examples of domains that function as spacers are the heavy and light immunoglobulin constant domains which ‘present’ the working end of the immunoglobulin, i.e. the variable domains, for binding to target antigen (Author(s): The Open University