4.5.2 Commercial copolymers

The main reason for copolymerizing different monomers is to adjust the physical properties of a given homopolymer to meet a specific demand. SBR elastomer, for example (Table 1), based on 24 wt% styrene monomer shows better mechanical properties and better resistance to degradation than polybutadiene alone. By increasing the s
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French Basics - How to Pronounce Vowel Blends Plus the Letter 'H'
This video offers the correct way to say the combination/blend of vowels plus the letter 'H'. (01:42) Each blend/combination is said once while the narrator pauses for you to repeat. (Perhaps the video might be better served if it showed an example of a word with the blend, rather than just the blend itself.)
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1.11 Callisto

David A. Rothery Teach Yourself Planets, Chapter 9, pp. 107-39, Hodder Education, 2000, 2003.

Copyright © David Rothery

Callisto, the outermost galilean satellite, has a dark heavily cratered surface (Figure 9.18) with an albedo of only 0.2. It is the only one of its family to resem
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3.2 Using scientific notation

Scientific notation can be very useful when estimating the answers to calculations involving very large and/or small decimal numbers.

Example 9

A lottery winner won £7851 000. He put the money straight into a deposit account which earns 7.5% interest per annum (i.e. each year
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Resource #8239
UNSPECIFIED - UNSPECIFIED Keywords:UNSPECIFIED
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Natan Sharansky: Democracy, Education and Human Rights
Natan Sharansky, Former Deputy Prime Minister, Chairman of the Adelson Institute for Strategic Studies: Democracy, Education and Human Rights The 6th International Conference on Holocaust Education Teaching the Shoah -- Fighting the Racism and Prejudice Closing Session -- Thursday, July 10, 2008 Keynote Lectures in memory of Dr. Israel Asper http://www1.yadvashem.org/yv/en/education/conference/2008/index.asp
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A run time exchange of component information between CAD and object models: A standard interface
Integrated computer aided design could only occur in engineering once CAD systems could represent physical features and components rather than graphical primitives. In most dedicated CAD systems, the knowledge of a complete component exists only for the duration of each drawing command and the data stored in the database is simply a set of graphic primitives. This paper proposes an approach for real time information transfer fr
Author(s): Alshawi, M.

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Rights not set

ELECTRICIDAD PARA LA INGENIERÍA QUÍMICA (2008)
Conocer las principales leyes fisicas en el campo del electromagnetismo y su formulación matemática. Adquirir vocabulario y terminologia especifica. Conocer las principales técnicas exerimentales en el campo del electromagnetismo. Adquirir la base conceptual y metodológica ,elemental e imprescindible,para poder abordar satisfactoriamente el desarrollo de otras deisciplinas de la titulación.
Author(s): Gómez Tejedor, José Antonio

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FISA, the NSA, and America’s Secret Court System

[This article is part of a series. See Edward Snowden, the NSA, and the US Courts.]

We begin our analysis of the legal machinations of the NSA by looking at the secret court system which supposedly practices judicial oversight over the agency. This Foreign Intelligence Surveillance Court (F
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Solitude of the Humble Genius: Gregor Johann Mendel
Author Jan Klein discussed his book on Gregor Johann Mendel. Speaker Biography: Jan Klein is the former director of the Max Planck Institute for Biology at Tübingen, German. He is the Francis R. and Helen M. Pentz visiting professor of science and adjunct professor of biology at Pennsylvania State University. For transcript, captions, and more information, visit http://www.loc.gov/today/cyberlc/feature_wdesc.php?rec=6215
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11.950 Citizen Participation, Community Development, and Urban Governance in the Developing World (M
Citizen participation is everywhere. Invoking it has become de rigueur when discussing cities and regions in the developing world. From the World Bank to the World Social Forum, the virtues of participation are extolled: From its capacity to "deepen democracy" to its ability to improve governance, there is no shortage to the benefits it can bring. While it is clear that participation cannot possibly "do" all that is claimed, it is also clear that citizen participation cannot be dismissed, and th
Author(s): Baiocchi, Gianpaolo

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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

Learning outcomes

After studying this course, you should be able to:

  • demonstrate knowledge of the electromagnetic spectrum and how it is used to infer properties of sources of radiation

  • demonstrate knowledge of the range of sizes, distances and motions of objects in the Universe and how they can be measured

  • demonstrate knowledge of the structure of, and the main processes operating in, the Sun

  • comprehend concepts lying well outside everyday experience,
    Author(s): The Open University

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Virtual Maths, Shapes, Space and Measure, Sine, Cosine, Tangent, and Theta
Interactive tool demonstrating formulae for sine, cosine, and tangent with Theta
Author(s): Leeds Metropolitan University

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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Learning outcomes

After studying this unit you should be able to:

  • define and use each of the terms printed in bold in the text;

  • understand the properties of nucleotides, how they contribute to secondary and tertiary structures of nucleic acids at the molecular level, and how torsional states are maintained in cellular DNA;

  • understand the different composition and roles of nucleic acids in the cell and their interactions with each other and with agents that cau
    Author(s): The Open University

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    Copyright © 2013 The Open University

Libraries, Archives and Museums: A Strategic Conversation: Opening Talk
Monday, April 9 For generations Harvard's libraries, archives, and museums have been pre-eminent participants in support of the research, teaching, and learning carried out both within the university, and also beyond its walls. In an increasingly connected global society, interdisciplinary work is becoming the norm and researchers increasingly seek and share information across formats, genres, and institutional settings. To support users and to continue to grow and thrive, libraries, archives,
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Inside the News: ECB could ease European fears - Nomura
Nov. 25 - Relative valuations for European stocks remain attractive but uncertainty is dominating and will do so until the ECB steps up its euro zone debt crisis intervention, says Shanthi Nair of Nomura.
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Adding Two-Digit Numbers
This video provides a brief demonstration of how to add two-digit numbers, using 12+19 as an example. (0:55)
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An Unexpected Convergence: informality, the gig-economy, and digital platforms [Audio]
Speaker(s): Professor Pinelopi Koujianou Goldberg | The Annual Economica Coase lecture is jointly sponsored by the journal Economica and the Department of Economics. Pinelopi Koujianou Goldberg is Elihu Professor of Economics at Yale University and Chief Economist of the World Bank Group. She is former Vice-President of the American Economic Association and President elect of the Econometric Society (for 2021). She is a member of the American Academy of Arts and Sciences, a recipient of both Gug
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