1.1 Early observations

Some of the earliest observations of macromolecules within living cells were of nucleic acids in the form of chromosomes. These long dark-staining objects, which became visible in the nucleus of cells at specific stages of cell division, were large enough to be detected using primitive light microscopes. Giant polytene chromosomes, found in certain cells such as the salivary gland cells of Drosophila (see Figure 1a), contain many thousands of copies of each chromosomal DNA align
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Routeboekje bij blok 7 en 8 - Zo gezegd, zo gerekend! 5
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Ann De Cock en haar collega's herschikten de lessen uit Zo gezegd, zo gerekend 5 in nieuwe blokken. Per blok werd een routeboekje gemaakt voor de leerlingen die het niet nodig hebben om de hele instructie mee te volgen. Voor hen werd de …


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Outside Insight: navigating a world drowning in data [Audio]
Speaker(s): Jorn Lyseggen | The Internet has changed the way we make decisions, but the way executives make decisions hasn't changed at all. Board members focus on internal data when every day competitors are leaving behind online breadcrumbs filled with valuable external data. This could be a job advert, filing a new patent, launching a new product, social media and more. Using insights gleaned from this data will help companies to look ahead and make more informed decisions. In this lecture, J
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Faculty in :90 / Mike Poorman
A brief question-and-answer session with Mike Poorman, a senior lecturer and the director of alumni relations in the College of Communications, produced by the college as part of its “Faculty in :90” series.
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NFAIS 2008 talk on Open Notebook Science
Jean-Claude Bradley presents on "Open Notebook Science: Putting the Information User in Control through Transparency" at the NFAIS meeting in Philadelphia on February 24, 2008. This was part of the session on "The Emerging Culture of the New Information Order". The use of public blogs, wikis, GoogleDocs and mailing lists to conduct research on the synthesis of new anti-malarial agents is described.

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What are the Functions of Proteins?
Proteins are very important molecules in our cells. They are involved in
virtually all cell functions. Each protein within the body has a specific function. There are several types of proteins and their functions. The structure of a protein determines its function. This video gives short explanations of the functions of antibodies, contractile proteins, enzymes, hormonal proteins, structural proteins, storage proteins, and transport proteins. (2:47)

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GoNUxstream Season Recap - Swimming & Diving 2011
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Alternateur, notions et principes de base (3) (Vidéo)

Troisième et dernier volet du cours vidéo consacré à l'alternateur, qui présente notions et principes de base, en abordant tour à tour :

- le magnétisme

- l’électromagnétisme

- le principe de l’alternateur

- la tension

- le courant

- la fréquence

- le facteur de puissance

- les puissances


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Cijferen tot 10 000 : Toets - Kompas 4
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Dit werkblad kan gegeven worden als toets wanneer ze de optelling, aftrekking, deling en vermenigvuldiging bij cijferen tot 10 000 hebben gezien.

Deze opdrachten sluiten aan bij de methode van Kompas 4 en kan gebruikt worden na week 10.


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U.S. Day Ahead: FedEx results - all about hope and Xmas!
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3.016 Mathematics for Materials Scientists and Engineers (MIT)
This course covers the mathematical techniques necessary for understanding of materials science and engineering topics such as energetics, materials structure and symmetry, materials response to applied fields, mechanics and physics of solids and soft materials. The class uses examples from the materials science and engineering core courses (3.012 and 3.014) to introduce mathematical concepts and materials-related problem solving skills. Topics include linear algebra and orthonormal basis, eigen
Author(s): Carter, W. Craig

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TALAT Lecture 3207: Solidification Defects in Castings
This lecture provides an introduction to the causes and remedies of the main solidification defects in castings. The students should be able to diagnose the major defects in castings and propose methods of preventing them. Basic knowledge of physics and foundry practice is assumed.
Author(s): TALAT,Richard A Harding, Interdisciplinary Researc

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2.1 Introduction

Polypeptides are synthesised by translation of messenger RNA (mRNA) on the ribosome, either in the cytosol or in association with the endoplasmic reticulum (rough ER). The polypeptide starts to adopt elements of secondary structure and to fold even as it is being synthesised, and certain covalent modifications of the polypeptide can also occur while translation is ongoing. Initial folding is rapid (of the order of a few seconds). Some proteins require cofactors, which are non-pr
Author(s): The Open University

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Academic research on student engagement - lost formulae to inspiring students
This paper shows academic tutors take on a multitude of roles in their current positions at university and while teaching is expected, from most, it is often assumed that the tutor will apply appropriate pedagogical tools to convey knowledge to the students. This view is now being challenged as many students are being actively encouraged to voice their views of the teaching and learning experience this paper shows
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16.522 Space Propulsion (MIT)
Space Propulsion begins with a review of rocket propulsion fundamentals. The course then proceeds into advanced propulsion concepts, ranging from chemical to electrical engines. Propulsion system selection criteria and mission analysis are introduced. The bulk of the semester is devoted to the physics and engineering of various engine classes, including electrothermal, electrostatic and electro-magnetic. Specific topics include arcjets, ion engines, Hall thrusters and colloid thrusters.
Author(s): Martinez-Sanchez, Manuel

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Basketball Stretching Tips
Basketball Stretching Tips. Part of the series: How to Play Basketball. This video shows how to stretch before working out. Make sure that those engaging in these activities are capable because they can cause injury if done without careful instruction.

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Greetings - basic Amharic.
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9.6 Changing parents' perceptions

Bellaby, P. (2003) ‘Communication and miscommunication of risk: understanding UK parents' attitudes to combined MMR vaccination’, British Medical Journal, 327, 27 September 2003, pp. 725–28. Reproduced by permission from the BMJ Publishing Group; Mary Evans Picture Library Ltd; P A Photos.

Vaccination has a heroic history in the control of communicable diseases. However, collective provision that is taken for granted today in Britain-not just vaccination, but also se
Author(s): The Open University

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"How to Use "Word Magnets"
Word Magnets is a simple to use web tool that will take a piece of text and break it into individual magnets which can be moved around the screen, resized, removed, color coded, grouped, sorted and so on. New magnets can also be added at any point. This is a great tool to use with sequencing, language study, and can be molded to fit many areas of the curriculum. This is a great resource to help enhance technology instruction and use in the classroom. (2:34)
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3.063 Polymer Physics (MIT)
This course presents the mechanical, optical, and transport properties of polymers with respect to the underlying physics and physical chemistry of polymers in melt, solution, and solid state. Topics include conformation and molecular dimensions of polymer chains in solutions, melts, blends, and block copolymers; an examination of the structure of glassy, crystalline, and rubbery elastic states of polymers; thermodynamics of polymer solutions, blends, crystallization; liquid crystallinity, micro
Author(s): Thomas, Edwin (Ned)

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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