7.06 Cell Biology (MIT)
This course deals with the biology of cells of higher organisms: The structure, function, and biosynthesis of cellular membranes and organelles; cell growth and oncogenic transformation; transport, receptors, and cell signaling; the cytoskeleton, the extracellular matrix, and cell movements; chromatin structure and RNA synthesis.
Author(s): Ploegh, Hidde,Orr-Weaver, Terry

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Purdue Day of Giving Krannert Challenge
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2.7 Geological problems in coal mines

A modern coalface is a very complex operation that represents a large investment in terms of capital, labour and planning. Cutting machines and lengthy conveyors are inflexible and require uniform geological conditions to maximize output. What then are the effects of geological variations on such a mining system?

Geological factors control the selection of working areas. The two principal geological conditions that affect mining operations are, first, the nature of the coal-bearing rock
Author(s): The Open University

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Fe, C 1.0 (wt%), hypereutectoid alloy
This secondary electron SEM image shows the cementite delineating prior austenite grain boundaries with a thin layer. The amount of proeutectoid phase is very low, with the majority of the area being taken by the pearlite eutectoid. Again each pearlite cell has a different orientation with the ferrite phase being selectively etched.
Author(s): DoITPoMS, University of Cambridge,Prof T W Clyne,

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5 Conclusion

Domesticated organisms evolve in artificial environments under artificial selection, and opportunistic or enforced hybridisation often occurs between species that would not normally interbreed. Natural selection cannot be eliminated and continues to operate. At least two different forms of dwarfism are common in domesticated livestock and humans, but only the rarer midget type of dwarfism occurs in wild lineages. Domesticated mammals and birds have distinctive patterns of skin pigmentation th
Author(s): The Open University

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6.5 Summary of Section 6

Growth cones respond to proximal and distal cues. The proximal cues in the extracellular matrix or other cells affect adhesion and result in chemotactic guidance. Distal cues are also in the extracellular matrix but they diffuse through it and result in the growth cone either moving towards the source (attractants) or away from it (repellants). These distal cues are chemotropic cues and can have different effects on different growth cones; what may be an attractant to one growth cone may be r
Author(s): The Open University

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Native American Portraits
This is a video of portraits of the famous Native Americans of history: Powhatan, Pontiac, Tecumsah, Sequoiya, Sitting Bull, Red Cloud, Crazy Horse, Geronimo, Joseph, Jack, and others. However, the people are not identified. Music is "Mountain" Apache Song & Drogo's Pan Ethnic Quintet. (02:20)
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The Writing Process: You Can't Write Well Without It PowerPoint
This PowerPoint presentation is a review of the steps in the writing process.  It talks about prewriting, brainstorming, outlining, drafting, word choices, revising, proofing, and presenting.  This video itself is quite simple, but the information presented is very thorough.
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2.2.1 Mechanics and determinism

It is probably fair to say that no single individual has had a greater influence on the scientific view of the world than Isaac Newton. The main reason for Newton's prominence was his own intrinsic genius, but another important factor was the particular state of knowledge when he was, in his own phrase, 'in the prime of my age for invention'.

In 1543, a century before Newton's birth. Nicolaus Copernicus launched a scientific revolution by rejecting the prevailing Earth-centred view of t
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4.7 Build prototype/demonstrator

The physical models we talked about earlier are prototypes or demonstrators of a sort. However, for the purposes of making a clear distinction in the process, I'm referring here to prototypes or demonstrators as functioning preliminary models of the essential finished product or construction or service, bringing together all the elements of the design that may or may not have been previously physically tested (Author(s): The Open University

Up Close: Casey Coffman
The Senior Vice President, Corporate Strategy and Development for The Madison Square Garden Company discusses how sport and entertainment are closely knit, her leadership style, and her vision of how technology will influence the future of sport.

Tissue engineering and stem cell technology
A lecture, "Tissue engineering and stem cell technology" given by Prof ZhanFeng Cui, University of Oxford, at the 10th OIBC Spring Symposium, held jointly with the Department for Continuing Education, at St Edward's School, Oxford, on 4 March 2009. Visit http://media.conted.ox.ac.uk/oibc2 to view the full presentation from Prof ZhanFeng Cui, including his slides.
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5.1 Introduction to key concepts

Before I go any further I will establish the meaning of some of the key concepts that you will encounter throughout this unit.

The key concepts elaborated in this unit are:

  • inventor

  • invention

  • design

  • product champion

  • entrepreneur

  • improver

  • innovation

  • dominant design

  • robust design

  • lean design

  • radical
    Author(s): The Open University

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5 How might dialogue move on from GM Nation?

There is a widespread optimism that ‘lessons have been learnt from the GM Nation? Debate’ – indeed the government's response to the exercise was couched in just those terms (DEFRA, 2004). One concern has been touched on already – many felt that the debate took place too late, on a rushed timetable, at a time in the controversy when the debate had become highly polarised and divisive ‘pro’ or ‘anti’ stances already embedded. This late in the day, questions for public discussion
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7 Final thoughts

We deliberately chose a wide range of different initiatives to explore, to reflect the broad range of initiatives underway. And yet, as you have seen, there are common threads that run though all our examples, such as the representativeness of ‘public’ opinion and how outcomes input into policy making. A key issue that Reading 5 highlighted was
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7.6 Questions

Question 15

Suppose that a galaxy has emission lines in its optical spectrum. A line of wavelength 654.3 nm is broadened by 2.0 nm. Estimate the velocity dispersion of the gas giving rise to the broadened spectral line
Author(s): The Open University

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2.3 IT and you

Sometimes it's useful to stop and think a bit about your own experiences and focus on your own views. This can help you understand issues in more depth. For example, when studying the impact of IT on everyday life, your own experiences are a useful resource.

Activity 4

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Writing Responses to Open-Ended Questions
This is a presentation of 16 slides that addresses how to answer open-response questions. View at your own pace.
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