8 Water and its impurities

Water must be of a certain quality to be suitable for human consumption. No natural water found on Earth is pure; any sample of water contains more than just water molecules. Some materials, such as sodium nitrate, are very soluble and dissolve in water in large quantities, whereas other materials are much less soluble. This is just as well, otherwise rain would dissolve all the rocks and they would end up in the oceans!

Drinking water must not contain harmful materials, which means bot
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Malaysia and Singapore: Models for the Asian Century?
Chaired by Basham Professor Anthony Milner from the ANU School of Culture, History & Language, this expert panel examines the question 'Malaysia -Singapore: Models for the Asian Century?' as part of the inaugural Malaysia-Singapore Update at The Australian National University. Both Malaysia and Singapore have had a long and close association with Australia in areas including economic cooperation, education, security and refugees. The longstanding governments of these two economically thriving s
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Oil tanker was hijacked by Libyan gunmen, captain says
Now held in a Libyan jail, the captain of an oil tanker -- said to have been seized by a group of armed fighters -- says he and his crew had no choice but to comply with the ship's captors. Jillian Kitchener reports. Subscribe: http://smarturl.it/reuterssubscribe More 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 busi
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7.90J Computational Functional Genomics (MIT)
The course focuses on casting contemporary problems in systems biology and functional genomics in computational terms and providing appropriate tools and methods to solve them. Topics include genome structure and function, transcriptional regulation, and stem cell biology in particular; measurement technologies such as microarrays (expression, protein-DNA interactions, chromatin structure); statistical data analysis, predictive and causal inference, and experiment design. The emphasis is on coup
Author(s): Gifford, David,Jaakkola, Tommi

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

Introduction

Energy from sources other than fossil or nuclear fuels is to a large extent free of the concerns about environmental effects and renewability that characterise those two sources. Each alternative source supplies energy continually, whether or not we use it. Many alternative sources of energy have been used in simple ways for millennia, e.g. wind and water mills, sails, wood burning – but only in the last two centuries has their potential begun to be exploited on an industrial scale. Except
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A-Z HIV/Aids reporting practical guide
Published by the Kaiser Family Foundation, this practical guide which is intended for journalists provides information on HIV/Aids reporting for the media. The guide covers the basics of HIV/Aids reporting; tips on how to pitch stories to editors, and gives advice on ethical reporting. Lists are provided on additional resources with a glossary, a timeline of the history of HIV, FAQ, explanations utilised and details on treatments used for HIV/Aids. The last two chapters concentrate on TB and mal
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Hand Gestures, Kinect and Conversations

This inspirational project provides another view of how the Kinect might be used to extend and enhance communication and interaction (and as a "hand talker" myself I think it's just kind of cool :)

Kinect for Windows helps decode the role of hand gestures during convers
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Alporas' closed cell aluminium foam
Additions are made to molten aluminium or aluminium alloy to modify the melt viscosity and make it suitable for foaming. 1 to 3 wt% titanium hydride is then added to the melt, and this foams the melt by releasing hydrogen. The foamed melt solidifies to yield a closed cellular structure with an average cell size of 4.5 mm
Author(s): DoITPoMS, University of Cambridge,Dr V Gergely, De

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Kids Tell the Story
History is in the hands of Junior Interpreters all summer long, as the story of the Revolution expands to include a kid's perspective. Pam Blount tells us how sites involve children in the 18th century and today.
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2.3.2 Geophysical methods — seismic surveying

Geophysical survey methods use measurements made at or near the Earth's surface to investigate the subsurface geology. The most widely used geophysical method is seismic reflection surveying; a rapid and highly cost-effective way of gathering data.

A seismic source (produced either by the explosive release of compressed air in a shallow borehole, or a heavy pad vibrated hydraulically at the surface) generates seismic waves that travel through the ground (
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Sunday Service Live - 5/18/14 - Carol Gregg
Sunday Service Live - 5/18/14 - Carol Gregg
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1.7.1 Carboniferous mires

During the late Carboniferous, mires developed over vast areas of the UK. Much of today's land area was an extensive, low-lying plain bordering a sea to the south (a sea that was soon to be the site of a mountain-building episode). Any mountains that existed lay hundreds of kilometres to the north. Large river systems meandered southwards across these plains.

At that time, the UK lay in tropical latitudes, almost on the Equator (see Author(s): The Open University

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
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Diabetes complications
Diabetes is an increasing problem among both adults and children. This free course, Diabetes complications, looks at the way the condition is managed once it has been diagnosed in order to reduce the risk of further complications. You will look at the role of each member of the team involved in the diabetes annual review and look at the risk factors involved with certain diabetes complications.Author(s): Creator not set

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Fresh gun battle near Karachi airport
A fierce gun battle erupts close to Pakistan's busiest airport in the city of Karachi, a day after militants stormed one of its terminals. Sarah Toms 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 n
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5.13 Organic Chemistry II (MIT)
5.13 is an intermediate organic chemistry course that deals primarily with synthesis, structure determination, mechanism, and the relationships between structure and reactivity emphasized. Special topics in organic chemistry are included to illustrate the role of organic chemistry in biological systems, medicine, and in the chemical industry.

Practicing Handwriting Using Air Writing
Student/Teacher Created Video- A student demonstrates how to use air writing to practice how letters are formed BEFORE using pencil and paper.  Sound is not clear. (3:06)
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President's 8th Annual College Coffee in honor of the Elon Academy
The Elon Academy, Elon's non-profit college access and success program, held a special College Coffee today to celebrate the start of its eighth class -- the Iota Class. Members of the Eta and Theta classes have also returned to campus for the summer. The first class of scholars, the Alpha Class, graduated from college this year. The Elon Academy is now serving 169 scholars (76 in college and 93 in high school or transitioning to college) and approximately 370 family members! Read more here: htt
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Office 365 Goes to the Movies

Think of how movies would be different if they'd only had Office 365. How can mobsters keep tabs on enemy families? Presence in Lync. How can the beleaguered sheriff keep law and order in the Old West? Shared Outlook calendars. See how in The Office Show Classic Film Festival! They don't make movies like these anymore.

Author(s): Laura Foy

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「新渡戸稲造とこれからのグローバル化 ―『武士道』と国際人―」の映像
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