Al 88, Si 12 (wt%), eutectic alloy
This sample is a casting alloy of eutectic composition. From the melt a eutectic is formed between aluminium solid solution and virtually pure silicon. Slow solidification produces a very coarse microstructure. The eutectic comprises large plates of silicon in the aluminium matrix. This microstructure displays poor ductility due to the brittleness of large silicon plates. The microstructure is normally refined through either rapid solidification, which lets the silicon phase assume a fibrous for
Al-4 wt% Cu, age hardened alloy
This alloy was solution treated. Hardening is achieved by the controlled rejection of copper from a supersaturated solid solution. There is some additional hardening from precipitates such as MgSi2. From the phase diagram for the pure aluminium-copper binary system, it can be seen that the solubility of copper in -aluminium increases with increasing temperature up to the eutectic temperature of about 550°C. The equilibrium microstructure below the eutectic temperature is a two-phase mixture of
This topic is introduced by a brief description of the functions of the lymphatic system. A description of the primary and secondary lymphoid organs and their locations. An interactive feature illustrating both primary and secondary organs.
Physiology of the respiratory system
This topic begins with a good introduction to the respiratory system and how it can be categorised (e.g. structurally or functionally). A diagram illustrates the relative pressure differences of the alveoli and atmospheric air. A description of gaseous exchange is also given.
Kidneys and the urinary system
This topic begins with a diagram showing the position of the kidneys in relation to the other surrounding organs. The organs of the urinary system are detailed. Organs associated with the male and female bladder are mentioned and a diagram is included for each system.
A Strange New Planet
This video segment adapted from NOVA features the first planet to be discovered outside our solar system. Its surprisingly large size and short orbit sent scientists back to their data and led them to discover similar planets.
SP.235 Chemistry of Sports (MIT)
In this new seminar, we will be focusing on three sports, swimming, cycling and running. There will be two components to the seminar, a classroom and a laboratory. The classroom component will introduce the students to the chemistry of their own biological system. Since we are looking at swimming, running and cycling as our sample sports, we will apply the classroom knowledge to complete a triathlon.
12.007 Geobiology (MIT)
The interactive Earth system: biology in geologic, environmental and climate change throughout Earth history. Since life began it has continually shaped and re-shaped the atmosphere, hydrosphere, cryosphere and the solid earth. Subject introduces the concept of "life as a geological agent" and examines the interaction between biology and the earth system during the roughly 4 billion years since life first appeared. Topics include the origin of the solar system and the early Earth atmosphere; the
Sustaining Success Week 4 Task: Reflection and Action - elaborate
Sustaining Success Week 4 Task: Reflection and Action - elaborate
One Falls for Each of Us: The Prototyping of Tragedy
Brenda Brathwaite delivers her talk at the Art History of Games Symposium on February 6, 2010 in the High Museum of Art's Rich Auditorium on the campus of the Woodruff Arts Center, in midtown Atlanta. The symposium was presented by Georgia Tech and the Savannah College of Art and Design. Incorporating 20,000 wooden figurines, incense and dozens of leather hides, Brenda Brathwaite's latest game is One Falls for Each of Us. Currently in development, it is the fourth game in the Mechanic is the Me
Cu 70, Sn 30 (wt%) bronze, as cast
High tin Cu-Sn alloy. The phase diagram of this system is complicated, at room temperature the equilibrium phases are α (copper) and ε.
Experience the Museum's Whale Wash
Each year, the Museum's blue whale model gets spruced up in an annual scrub down. The 2014 Whale Wash was shared widely on social media when the Museum broadcast a special livestream of the event. Now viewers can re-live the famous whale's spa day with this recorded video. In the Milstein Hall of Ocean Life, visitors at the Museum watched as members of the Exhibition department use long-handled brushes and vacuums to wipe away the dust from the 94-foot long, 21,000-pound model. Learn more abo
Titanoboa: Monster Snake - Titanoboa Could Swallow You Whole!
Titanoboa was the biggest, baddest boa that ever lived! Take a trip to crocodile heaven and sing a song to the monster snake. This video is for elementary school children. (02:48)
Multidisciplinary System Design Optimization, Spring 2004
This course is mainly focused on the quantitative aspects of design and presents a unifying framework called "Multidisciplinary System Design Optimization" (MSDO). The objective of the course is to present tools and methodologies for performing system optimization in a multidisciplinary design context, focusing on three aspects of the problem: (i) The multidisciplinary character of engineering systems, (ii) design of these complex systems, and (iii) tools for optimization.
24.900 Introduction to Linguistics (MIT)
This core-curriculum linguistics class will provide some answers to basic questions about the nature of human language. Topics include the intricate system that governs language, how it is acquired, the similarities and differences among languages, and how spoken (and signed) language relates to written language, among others.
Mini project : ROM based sine wave generator : presentation transcript
This is a Mini Project presentation introducing a ROM-Based Sine Wave Generator. It is part of the 2009/10 BEng in Digital Systems and Computer Engineering (course number 2ELE0065) from the University of Hertfordshire. All the mini projects are designed as level two modules of the undergraduate programmes. This project requires the establishment of a communication protocol between two 68000-based microcomputer systems. Using ‘C’, students will write software to control all aspects of comp
South African Child Gauge 2009/2010
The South African Child Gauge is produced annually by the Children Institute University of Cape Town to monitor government and civil society progress towards realising the rights of children This issue focuses on child health. The South African Child Gauge is divided into three parts: PART ONE Children and law reform. Part one discusses recent legislative developments affecting child health In this issue there is commentary on the Children's Act the Prevention of and Treatment for Substance Abus
The Kepler Mission: Searching for Other Earths in the Cosmos
Dr Fanson speaks about the Kepler project, NASA's first mission capable of discovering Earth-size planets orbiting other stars in our galaxy. Scheduled for launch in early 2009, Kepler seeks to answer an age-old question: Are there other habitable worlds in the cosmos? The centuries-old quest for other worlds like our Earth has been rejuvenated by the intense excitement and popular interest surrounding the discovery of giant planets like Jupiter orbiting stars beyond our solar system. With the e
Study Abroad 2010: INDIA
Students followed the Ganga (Ganges) River system from the Himalayas down to Calcutta and beyond as they took part in two upper level Geology courses: 1. "Water Resources of India" focuses on the efforts of government to stimulate economic growth while protecting the environment and cultural resources of the river system. The course covers basic water resources and hydrology principles and then delves into issues specific to India. 2. "Pollution in the Developing World" focuses on the fundame
Climate Change - The Science (Part B)
Professor and Director of the UC Irvine Environment Institute Michael J. Prather delivers the second lecture in Earth System Science 280: Sustainability Science on Wednesday, October 6, 2010.