4.3 Assessing GM foods: substantial equivalence is introduced

In the early 1990s, biotechnology companies were preparing to market the first food products derived from GM crops. This provided a challenge to legislators. There were no precedents to guide them as to how to approve or ban novel food products. The methods used to approve pharmaceuticals, summarised above (Section 3.1), did not seem to transfer easily to whole food products.

Author(s): The Open University

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Meet the Journalist: Roger Thurow
1,000 Days: In this Meet the Journalist video, Roger Thurow explores this new innovation of biofortification and how mothers are enlisting the crops they grow in the fight against malnutrition.
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5.3.1 Muscles

The rates of muscle contraction and relaxation, and the maximum force generated, are complex enzymatic processes that determine speed of swimming. Ian Johnston of St Andrews University (Johnston, 1989) has compared the maximum tension of muscle fibres isolated from several species of antarctic, temperate-zone and tropical fish (Figure 25).

Author(s): The Open University

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Spelling derde leerjaar : Herhalingsbundel
d_of_t.png

Herhalingsoefeningen bij alle spellingsafspraken die in het derde leerjaar aan bod komen.

Volgende spellingmoeilijkheden worden ingeoefend:

  • woorden met -ng en -nk;
  • woorden die eindigen op d of t;
  • woorden met g of ch;
  • verenkelen en …

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2012 March 20 - Part 1

Recitation leader Prof. Liang Fu, substituting for Prof. Adams, goes over how to qualitatively analyze the energy eigenstates given a general potential and begins the quantitative analysis of the energy eigenstates of a finite well.


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9.12 Experimental Molecular Neurobiology (MIT)
Designed for students without previous experience in techniques of cellular and molecular biology, this class teaches basic experimental techniques in cellular and molecular neurobiology. Experimental approaches covered include tissue culture of neuronal cell lines, dissection and culture of brain cells, DNA manipulation, synaptic protein analysis, immunocytochemistry, and fluorescent microscopy.
Author(s): Lois, Carlos,Hayashi, Yasunori

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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

Fabrizio Scarpa : "Cellular structures for morphing wings and reflectors"

In recent years the aerospace R&D community has witnessed a significant surge in research activities connected to morphing aerospace structures. This seminar describes the results from modelling and testing prototypes of wingboxes and satellite antenna reflectors made with cellular configurations. The cellular structures used (honeycombs, truss-cores, lattices) show negative and zero Poisson’s ratio behaviours, and are made from polimeric, shape memory alloy and embedded piezoelectr
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7.6 Synaptogenesis

The formation of synaptic connections is an essential property of nervous system development. Synapses are formed between neurons and also with targets that are not part of the nervous system, e.g. muscle. Axon terminals, under the direction of a variety of extracellular cues, grow towards particular targets. Once they arrive at the target, they stop growing and the growth cone changes to form a synapse. As with axon growth, the formation of the synapse is dependent on an interaction between
Author(s): The Open University

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Vocales Que Son Cinco
Canción infantil para aprender las vocales. (02:56)
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Beginning Cursive Handwriting
Video for cursive handwriting practice. It shows how to join letters in writing . This video does not have sound. Writing is shown on a whiteboard. (04:23)
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6.1 Firing-rate hypothesis

Information about stimulus intensity is encoded in two ways: the firing rates of neurons and the number of active neurons.

Intensity is assumed to be encoded by an increase in discharge rate of action potentials within the auditory system. As the stimulus gets more intense, the basilar membrane vibrates at a greater amplitude causing the membrane potential of activated hair cells to be more depolarised and this causes the nerve fibres that synapse onto the hair cells to fire at a greate
Author(s): The Open University

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4.3 The UK's coal reserves

Production of large quantities of coal in the UK during the 19th and 20th centuries led to the progressive depletion of reserves. In 2005 underground mining was limited to the Carboniferous coalfields of Yorkshire and the East Midlands, with only one underground mine operating in South Wales. However, surface mining sites still work coal in most of the coalfields (Author(s): The Open University

Web Science from a multinational business perspective
Web Science from a multinational business perspective - JP Rangaswami
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Química Orgánica I
Concierne a la enseñanza-aprendizaje de la Química Orgánica para los futuros Licenciados y Graduados en Química, dentro de las directrices del Espacio Europeo de Educación Superior (EEES).
Author(s): Francisca Cabrera Escribano,Juan Vázquez Cabello

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Cleaning a Personal Computer Keyboard
Learn from our expert some great techniques for cleaning your computer keyboard.
 
You need some electronic wipes, a can of air and a toothbrush to clean the keyboard.  This video takes you through the steps to be able to clean out your keyboard.

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The Upper Limb Anatomy Wiki

Authors: 
Roisin Kelly-Laubscher & students