Learning outcomes

After studying this course, you should be able to:

  • convert between wavelengths and frequencies

  • describe the main differences between lasers and LEDs as used as light sources for optical-fibre communications systems

  • describe the difference between direct and external modulation of a laser

  • describe the difference in structure and performance of step-index multimode, graded-index multimode and single-mode optical fibres

  • dr
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7.3 The eukaryotic chromosome

Whilst the bulk of eukaryotic DNA is packaged by proteins different from those in the eubacterial chromosome, the principles of bending DNA and neutralising the negative charges in its backbone are shared. Eukaryotic cells have considerably larger genomes than do prokaryotes (in most cases over 1000 times the size of the E. coli genome – see Author(s): The Open University

Voluntary Carbon Offsets
Introduction to doctoral research project by student Adam Bumpus at the Environmental Change Institute.
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8.2 Chromosome scaffolds

Most of the chromosomal DNA chains within the interphase nucleus are believed to be held on a scaffold or backbone structure made from various proteins, with loops of between 20 and 200 kb extruding from attachment sites. This chromosome structure is shown schematically in Figure 40. The scaffold, as well as permitting further compaction, serves to bring the DNA together in organised regions. There are many different protein components of these scaffolds, amongst them DNA topoisomerases.


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Indigenous Peoples' Legal Water Forum 2009 Session 9
A forum to explore the rights of Indigenous peoples to be involved in the governance of freshwater. Law Professor Lee Godden and Director of the Centre for Resources, Energy and Environmental law, University of Melbourne, Australia, "Indigenous Property Rights to Water: Environmental Flows, Cultural Values and Tradeable Property Rights in Australia".
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Learning outcomes

After studying this course, you should be able to:

  • understand the legal framework of the Health and Safety at Work etc. Act 1974 and Regulations associated with it

  • understand the employers’, employees’ and visitors’ duties

  • evaluate hazards and risks in order to carry out a risk assessment

  • understand the legal requirement to report any accident or dangerous occurrence

  • develop risk assessments for scientific laborat
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Isothermes d'un corps pur : SF6
TP virtuel (réalisé avec SEMM Labs http://semmlabs.univ-lille1.fr/) permettant de relever les valeurs du volume de SF6 contenu dans une éprouvette en fonction de la pression pour différentes températures...
Author(s): Jean-Marie Blondeau

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Droits réservés aux auteurs.

Cogs v2
Cogs v2 - John Savage Keywords:UNSPECIFIED
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Cruz in 2016 U.S. presidential race
Republican Texas Senator Ted Cruz confirms plans to run for president in the 2016 election. Paul Chapman reports. Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national, and international news. For over 160 years, Reuters has maintain
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1.8 Geological fieldwork

Although much can be learned from samples of rocks in the laboratory or at home, the ‘natural habitat’ of rocks is outdoors. Here the distribution and layout of different rocks is visible wherever rocks are exposed in places such as stream beds, cliffs, rocky shorelines, quarries, or road cuttings. The exposed rocks can be studied in just the same detail as individual laboratory samples, and geological fieldwork allows the size and extent of each rock unit to be seen and the relationships
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2.2 Why study ecology?

These days, bird watching is a popular leisure activity and in the past so were collecting insects, wild flowers and birds’ eggs (although such activities are not now recommended – indeed, they are often illegal – because of the potential damage they cause to flora and fauna). Some amateurs are or were truly experts in their fields. In fact, much of the original identification of the British flora and fauna was done by amateur naturalists. Many a Victorian vicar or other self-taught nat
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1.1.1 Carbon dioxide and other greenhouse gases

Carbon dioxide (CO2) is used as the basis for the carbon footprint because it is by far the main contributor to the enhanced greenhouse effect from human activity (mainly burning fossil fuels, clearing forests and making cement). So, often only CO2 is counted in the carbon footprint. However, for a more complete measure of the carbon footprint the other human-generated greenhouse gases are converted into a CO2 equivalent (in kilograms or tonnes CO2e
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Bayeux Tapestry
Animated version of the Bayeux Tapestry. Starts about halfway through the original work at the appearance of Halley's Comet and concludes at the Battle of Hastings in 1066.
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5 Conclusion

International economic relationships are constituted in large part by international trade and investment. I have argued that the current trade regime, apparently one of voluntary adherence to negotiated rule-making, is actually systematically weighted against the needs of developing countries. This asymmetry is rooted in a context where rich countries are eager to prescribe free trade for others but reluctant to impose it on themselves and able to avoid doing so. Its consequences are exacerba
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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).

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An Interactive Database (HizmO) for Reconstructing Lost Modernist Izmir:
The research project in progress in the School of Architecture at the Izmir Institute of Technology includes documentation and reconstruction (by 3D modeling in electronic media) of damaged and lost early modern buildings in the Izmir region. The research aims to analyze the differences between Izmir modern buildings and Universal Modern Style, and preserve information on architectural heritage for future generations. The project is at the phase of developing an interactive web-based historical
Author(s): Akgun, Yenal

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Rights not set

The Sanitary and Phytosanitary Measures (SPS) Agreement: Law, Science and Globalising Markets
The SPS Agreement is one of the most innovative and controversial aspects of the World Trade Organization (WTO). This agreement uses science as a benchmark for assessing the legality of Member State regulation and has, in high profile cases such as EC Hormones and EC Biotech, been used to condemn regulatory measures as unlawful. The agreement, and the institutions which develop and apply it, walk a precarious middle line between trade and public health/environmental protection. This lecture will
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3.2 The anatomy of the cochlea

The cochlea has a spiral shape resembling the shell of a snail (Figure 4a). You can approximate the structure of the cochlea by wrapping a drinking straw 2.5 times around the tip of a sharpened pencil. The hollow tube, represented by the straw, has walls made of bone and the central pillar of the cochlea, represented by the pencil, is a conical
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Conclusion

This free course, Systems diagramming, provided an introduction to studying Computing & IT. It took you through a series of exercises designed to develop your approach to study and learning at a distance, and helped to improve your confidence as an independent learner.

This OpenLearn course provides a sample of level 1 study in C
Author(s): The Open University

TALAT Lecture 1102: Environmental Factors
This lecture reviews the environmental factors affecting the aluminium industry and the remedial practices followed; it describes the concept of a product life cycle and the importance of recycling; it also describes the secondary aluminium industry, its history, processes, products and structure; it outlines the methodology used to calculate recycling rates and summarizes the scope and size of the European aluminium industry.
Author(s): TALAT,Geoff Budd, Aluminium Federation, Birmingham

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