Injection-moulded polystyrene (PS) case
The colours in the image are the result of birefringence and relate to the residual strain in the polystyrene. The pattern of strain is indicative of the flow of material during the injection process and it highlights the injection point (known as a 'sprue') which can also be identified by a small lump on the surface; the molecular alignment is greatest near this point. Towards the edges of the ruler and along its length, the material becomes more relaxed and as the molecular alignment falls, th
Author(s): J A Curran, Department of Materials Science and Me

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Injection-moulded polypropylene (PP) hinge
The colours in the image are the result of birefringence and relate to the residual strain in the polypropylene. The pattern of strain is indicative of the flow of material during the injection process and reveals the molecular alignment in the constriction which constitutes a hinge. The aligned molecules provide a fatigue resistant, flexible joint. A sprue which has been cut off is also visible in the top left-hand corner of the image.
Author(s): J A Curran, Department of Materials Science and Me

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Cu 21, Sn 79 (wt%), peritectic transformation
This microstructure is generated via a peritectic′s reaction (L+ε = η), which bears some similarities to the more familiar eutectic reaction (L = α+β). Upon cooling from the liquid phase field, primary ε is formed, which can be seen here as a slightly darker phase than the sheath of η surrounding it. The η sheath is the product of a peritectic reaction between ε and liquid. The peritectic reaction rarely goes to completion, si
Author(s): Prof T W Clyne, Department of Materials Science an

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Optical Tweezers and Applications
Did you ever imagine that you can use light to move a microscopic plastic bead? Explore the forces on the bead or slow time to see the interaction with the laser's electric field. Use the optical tweezers to manipulate a single strand of DNA and explore the physics of tiny molecular motors. Can you get the DNA completely straight or stop the molecular motor?
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Physics in architecture
Developed in 1998 by Dr John Whittle (Department of the Built Environment) using Authorware, this package contains brief interactive notes on eight areas of physics in which architects need a working knowledge. However, it is also useful to others in science, engineering and social sciences looking for an introduction to the topics concerned. These topics are: Units of measurement; Scalar and vector quantities; Newton’s laws; Mass and weight; Action and reaction; Waves; Heat, work and energy;
Author(s): Whittle John Dr

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Marketing of organic products

pdfExperiment to comparate the issues between organic agriculture and traditional agriculture.
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Grassland management on organic farms

pdfRecent decades have seen a reduction in value of clover pasture with the ease of establishing and maintaining nitrogen fertiliser-based grassland pastures. However, clover based pastures are now seen as suitable for maintaining good stocking rates, and this 16-page document
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Vegetable MD online

thumbnailPublished on the Web by the Cornell Plant Pathology Department, this site provides access to a range of fact sheets on vegetable diseases. The fact sheets are listed by crop and cover a range of issues, including production costs, varie
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11.007 Resolving Public Disputes (MIT)
This course is an introduction to real-world dynamics of public policy controversies. Topics to be considered include national, state, and local policy disputes, such as smoking, hazardous waste, abortion, gun control, and education. Using a case study approach, students study whether and how those disputes get resolved. Students conduct debates and simulations in addition to writing a series of short essays.
Author(s): Layzer, Judith

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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

Distinguished Innovator Lecture Series: John Steuart
Distinguished Innovator Lecture Series John Steuart, Managing Director, Claremont Creek Ventures John Steuart is a Managing Director of Claremont Creek Ventures, an Oakland-based venture capital firm investing in early-stage information technology companies. John focuses on the intersection of the information technology and life sciences markets including bioinformatics, molecular diagnostics, genomics, proteomics, software and instrumentation for med-tech industries. John serves on the board
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Amplification of Biochemical Signals: the ELISA Test
Students are introduced to the role of molecular shape, weak attractions and charge in biology and biochemistry, and then undertake a simulated Direct ELISA test.
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BioGrapher
PURPOSE: A simple Excel-based workbook with worksheets as a front end for the AT&T GraphViz Graph Layout software suite. BioGrapher enhances Excel-based tools developed in the Chemistry and Biology Departments at Beloit College to allow for convenient visualization of graphs and graphical connections that are important in systems and computational biology, molecular biology, biochemistry, and genetics.
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Case It
This software can be used to investigate common molecular biology laboratory procedures using DNA or protein sequence data. These simulations and cases are based primarily on genetic and infectious disease with techniques such as: DNA electrophoresis, Southern blot, PCR, Multiplex PCR, Dot blot, ELISA, Western blot, 96-well PCR, protein electrophoresis. Case It! is collaborative BioQUEST project between the University of Wisconsin-River Falls and Michigan State University.
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Essential Physics I
Essential Physics 1, is an intensive introduction to classical and special relativity, Newtonian dynamics and gravitation, Einsteinian dynamics and gravitation, and wave motion. Mathematical methods are discussed, as needed; they include: elements of differential geometry, linear operators and matrices, ordinary differential equations, calculus of variations, orthogonal functions and Fourier series, and non-linear equations for chaotic systems. The contents of this book can be taught in one seme
Author(s): Frank W. K. Firk

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Social Psychology - Spring 2008
Social Psychology - Spring 2007. The course will begin with a historical introduction to social psychology, focusing on the intellectual contribution of Kurt Lewin and the integration of evolutionary and cultural approaches to human nature. The course will then focus on the major topics of social psychology (group dynamics, social influence, attitudes and attitude change, social perception) as well as more specific areas of research (altruism, emotion, justice) and recent developments in the fie
Author(s): Dacher Keltner

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A Look at Me
Students will develop a personal lifeline which will include events from the past and present. Students will also be asked to think or dream about events in the future. Advise students that for this activity they can plan to live to be one hundred years old. They must include a minimum of five events from their past and seven events they see in their future. This curriculum contains suggested activities to gradually move students toward a more futuristic and empathetic mind set. Students may dis
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NOP - Sustainable organic teaching lab
Sustainable development needs chemical research Research and innovation are preconditions for the transformation of economic and social processes in favor of a sustainable development. Chemistry, the science and practice of the transformation of matter, is of central importance. Everyone dealing with chemistry can contribute substantially to sustainable development and holds special responsibility. Already in education the links between reactions and substances with the consumption of energy and
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Get This Bug Off Me!
It's a natural reaction to be frightened of some insects. Many insects have the ability to harm people, and many insects look very menacing. However, many large insects are not harmful at all. Because it would take several volumes to describe every insect, this publication is intended to distinguish several common insects and insect relatives in Kentucky that are or are not harmful.
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A Manual of Online Molecular Biology Techniques
This is a collection of tried-and-true technique descriptions used in teaching postgraduate students in the Department of Molecular & Cell Biology at UCT.
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Genetics
Medical genetics involves the application of genetic principles in the practice of medicine. The material in this course encompasses diagnosis and treatment of genetic diseases (such as cancer genetics ), study of inheritance of diseases in families, mapping of disease genes to their chromosome locations, study of the molecular genetics and pathogenesis of inherited disorders, provision of genetic counseling for families, and investigations of methods for gene therapy. Unlike any other field, ge
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