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5.7.2 Elimination of pathogens through solar disinfection

The lack of safe drinking water in many developing countries has prompted research into simple methods of disinfecting small quantities of water. One such investigation at the University of Beirut in the Lebanon revealed that 99.9% of total bacteria in a water sample could be destroyed by 300 minutes exposure to direct sunlight. In effect this means that if you left a sample of water in a translucent container, a lot of the bacteria in it would be killed.

Research to date has concentrat
Author(s): The Open University

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Season 3 – Lesson 03 – Coffee Break Spanish
Coming up in this lesson:

This lesson was originally released in October, so in lesson 3 of Show Time Spanish, Alba tells Mark about a Halloween party she attended. They discuss the traditions of Halloween. In the intermedio José provides two alternative ways to say that you’re tired. Grammar points include reflexive verbs in different tenses, the subjunctive after quizás.  Not the most seasonal of lessons, but lots of interesting Spanish!

Please note that lesson 03
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Season 3 – Lesson 23 – Coffee Break Spanish
Coming up in this lesson:

This week Mark and Alba bring you a special musical episode: combining the Eurovision Song Contest with a performance from Mark of Tango by Spanish composer Albéniz. In the intermedio, José introduces the idea of ’embarrassment’ – vergüenza – and gives listeners some examples of how to use this concept in interesting expressions. Language points covered include llevar + time in the negative to talk about what you haven’t done for a
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Acknowledgements

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence.

Grateful acknowledgement is made to the following sources for permission to reproduce material in this course:

Course image: Tom Brown in Flickr made available under Creative C
Author(s): The Open University

One Minute Languages - Schedules
This flyer provides details on publication dates for each of the new One Minute Languages courses released between September and December 2008.Author(s): No creator set

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5.1 Managing relationships

You should now understand that markets and the customers within them are the responsibility of all managers within an organisation. An organisation needs to identify what will create extra value for its customers, and design a value-driven operating system that will concentrate all its efforts on producing it. This process of going to market involves the organisation in managing the relationships between itself and its customers and competitors, and also in the co-ordination of the organisati
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CALIDAD DE LA EDIFICACIÓN Y SU CONTROL (2008)
Esta guía docente pretende ser una herramienta para el alumno de la asignatura Calidad en la Edificación y su Control, que aun siendo eminentemente práctica, precisa de un apoyo documental. El objetivo planteado es dar a conocer al alumno todas las herramientas de trabajo y métodos para conseguir la calidad en una tipología constructiva como es la edificación, mediante su control técnico. Para ello que se introducen algunos conceptos de gestión de la calidad, necesarios para conocer y
Author(s): Valiente Ochoa, Esther,Barelles Vicente, Emma,GimÃ

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Rights not set

Annual Lecture in Law and Society: Law and Social Illusion
Professor Liam B Murphy, Herbert Peterfreund Professor of Law and Philosophy at New York University School of Law gives the 2013 Annual Lecture in Law and Society. In the wake of the House of Commons Debate on tax fairness and increasing public outrage at tax avoidance by Google and other multinationals, Professor Murphy will assess how misunderstandings of the ethical bases of the central legal institutions of a market economy badly distorts political debate on tax and other issues of social
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3.4 Databases

At a basic level, a database is a collection of information which can be searched. It is a way of storing, indexing, organising and retrieving information. You may have created one yourself to keep track of your references - or your friends' names and addresses. They are useful for finding articles on a topic, and can be used to search for many different types of information.

You may find some of the following databases useful for your topic. They contain different types of information
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Learning outcomes

After studying this unit you should be able to:

  • understand how the world is in the process of ‘being made’, right down to the earth beneath our feet;

  • consider how islands are shaped by a dynamic relationship between territories and flows;

  • show how human life is entangled with non-human forces and processes in the making of today's globalised world.


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1.2.4 Stage 2: Find a way in

It's easy to be distracted by the surface appearance of a diagram, but we are really interested in the underlying message. This is rather like the distinction made between the content and context reading of photographs. Once you are sure that you know what the main heading means, focus on a particular element and think it through. If it is a bar chart, for instance, pick on one of the bars and tell yourself what it represents, what it is telling you. Is it showing a percentage or a total? Wha
Author(s): The Open University

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Developing a Tangible User Interface for Parametric and BIM Applications Using Physical Computing Sy
This paper discusses the development of an interactive and a responsive Tangible User-Interface (TUI) for parametric and Building Information Modeling (BIM) applications. The prototypes presented in this paper utilizes physical computing systems to establish a flexible and intuitive method to engage digital design processes.The prototypes are hybrid UIs that consist of a digital modeling tool and an artifact. The artifact consists of a control system (sensors, actuators, and microcontrollers) an
Author(s): Al-Qattan, Emad, Galanter, Philip and Yan, Wei

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Rights not set

Pharrell reminds kids to be happy on U.N. International Day of Happiness
Singer Pharrell Williams urges kids to seek happiness during the United Nation's program for the International Day of Happiness. Rough Cut (no reporter narration). 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 internatio
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2.13 Key points about minerals

  1. Certain minerals are required in the body.

  2. Some minerals form essential structural components of tissues. For example, calcium, phosphorus and magnesium compounds are major components of bones and teeth. Fluoride is also important in protecting teeth from decay.

  3. Sodium, potassium, calcium and chloride ions are important in maintaining the correct composition of cells and of the tissue fluids around them (homeostasis). These same
    Author(s): The Open University

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Composing with MIDI
In the last 50 years, developments in technology have had a profound effect on the production, recording and manipulation of music. The 8 video tracks in this album introduce Simon Whiteside, a television and film composer, explore his recording studio and explain how he uses MIDI to create music for films and television programmes. Using an example of one of the programmes he has worked on, Simon illustrates the technical and creative processes involved. This material forms part of TA212 Techno
Author(s): The iTunes U team

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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

TALAT Lecture 3208: The Finishing of Castings
This lecture provides an introduction to some of the finer points in the production of high quality castings. The students will be able to understand the various processes for sealing porosity in badly made castings and to appreciate factors influencing the accuracy of castings, including a basic understanding of how to control and measure casting dimensions. Basic understanding of the foundry industry is assumed.
Author(s): TALAT,John Campbell, Interdisciplinary Research Ce

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h-BN inclusion in a β-Si3N4 grain
The micrograph shows h-BN inclusion (precipitate) in a β-Si3N4 grain (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and react with Si3N4 to form BN. Such
Author(s): DoITPoMS, University of Cambridge,Dr K M Knowles,

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Delamination cracks in h-BN particles.
h-BN particles were subjected to compressive stress in the (0001) planes (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and react with Si3N4 to form BN. Su
Author(s): DoITPoMS, University of Cambridge,Dr K M Knowles,

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4.7 Exceptions

Activity 13

Do you think the contact between the people in Image 29 is different from that in Images 27 and 28? Can you describe the nature of the contact?

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10 Course summary

The course began by considering what factors contribute to individual differences. The case was made, with the spiders, and later with genetic diseases, that the genome was very important. Subsequent sections revealed that the external environment (e.g. maternal care, the presence of light) and the internal environment (e.g. hormones and drugs) were very important and that they can both shape and determine the development of the organism. Environmental factors, in the form of hormones and dru
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