This video describes buoyancy and explains why some things float in water while others sink. It also provides a quick review density (the amount of mass in a given volume) and how density and volume affect buoyancy. (5:55)
All the Chemistry Basics in just 3 minutes In this highly energized lecture, Hank attempts to summarize "half a semester" of chemistry in just 3 minutes - molecules, elements, atoms, protons, neutrons, electrons, orbitals and chemical bonds.
In this highly energized lecture, Hank attempts to summarize "half a semester" of chemistry in just 3 minutes - molecules, elements, atoms, protons, neutrons, electrons, orbitals and chemical bonds.
Virtual Laboratories - Contents and Instructions
This file outlines three 'Virtual Laboratories in Molecular and Cell Biology' which can also be downloaded from JorumOpen. SDS-PAGE and Western blotting; Immuno-electron microscopy; Investigating intracellular signalling pathways (direct links are given in the document). It provides guidance on how the laboratories can be used for teaching and also contains instructions for downloading and installation. Read this before installing the laboratories.
Criminology, Law and Society C219: Hate Crimes
Examines the causes and consequences of hate crimes as well as the larger soical land political context in which they occur. Considers the dynamics and politics of violence stemming from bigotry and discrimination, as well as the social policies designed to control it.
Entrepreneurs Forum with Professor Gregory Weiss
Dr. Gregory Weiss, PhD Dr. Gregory Weiss is an Associate Professor in the Departments of Chemistry, Molecular Biology and Biochemistry at UC Irvine. A Californian who grew up in Palos Verdes, Dr. Weiss attended UC Berkeley as an undergraduate. He moved East for graduate school, attending Harvard University and graduating with a Ph.D. in chemistry and chemical biology in 1997. His experience with industry includes post-doctoral training at Genentech, where he worked on dissecting interactions b
Fluidics on a Compact Disc- A Two Day Short Course for Academia and Industry The "Begin Course" button will download a PowerPoint file containing all of the slides for this course. After unzipping the file, you can use Microsoft Office or the open-source OpenOffice to view the presentation slides.
The "Begin Course" button will download a PowerPoint file containing all of the slides for this course. After unzipping the file, you can use Microsoft Office or the open-source OpenOffice to view the presentation slides.
This a 2-day short course on Fluidics on a Compact disc for medical diagnostics. The course is intended for scientists and engineers in academia, government institutes and industry. Some background in physics, micro-fluidics and point of care (POC) diagn
Public Health Biology
Offers an integrative molecular and biological perspective on public health problems. Explores population biology and ecological principles underlying public health and reviews molecular biology in relation to public health biology.
Computer-based Metacognitive Training: Improving the Diagnostic Expertise of Novice Graduates
The diagnosis problem-solving task can be complex in many professions for which it is central, for example medical diagnosis, farm-management consultancy, etc. This is because often the expert must solve problems and make decisions in complex situations and while under time pressures. The complex nature of the problem situations and the novices lack of advanced metacognitive skills also make it difficult for novices to gain expertise and successfully solve problems in their fields. From the li
This site provides access to more than 4,000 reviewed resources covering 76 biological science topics: agriculture, anatomy, bacteriology, biochemistry, biodiversity, biotechnology, botany, cardiology, cell biology, ecology, environment, evolution, genetics, geography, human biology, immunology, marine biology, microbiology, molecular biology, neurobiology, pathology, pharmacology, physiology, public health, respiratory biology, soil biology, virology, zoology, and others. Registration required.
Acids and Bases: Testing Rocket Cars
A car propelled by the reaction between lemon juice and baking soda has more in common with rockets and jet aircraft than one might think. In this video segment adapted from ZOOM, two cast members demonstrate the power of rocket-propelled vehicles and how to exploit the force produced by the carbon dioxide gas. Grades 3-8.
Acids and Bases: Making a Film Canister Rocket
In this video segment adapted from ZOOM, two cast members demonstrate what happens when vinegar is added to baking soda inside a container. The resulting chemical reaction produces enough carbon dioxide to launch their paper rocket skyward. Recommended for: Grades K-5
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.
Climate Impact of Quadrupling Atmospheric CO2: An overview of GFDL Climate Model Results
In this report, the Global Fluid Dynamics Laboratory Climate Research Group examines the possible climate impacts of quadrupling atmospheric CO2. Several impacts are discussed, surface air temperature warming, sea level rise, thermohaline circulation changes, mid-latitude summer drying, heat index and temperature increases and possible changes in tropical storms and El Nino. This site provides a nice written overview and images regarding changes in climate and oceans due to increased CO2.
Magnetic Field Activities for the High School Classroom
The following unit is designed to acquaint the student with the magnetic field. The assumed average student has some familiarity with the uniform gravitational field of classical Newtonian dynamics and kinematics lessons. This is not required however. The unit is meant to introduce the idea of a field through investigations of magnetic fields as produced by various common magnetic materials and direct currents. The difference between a magnetic field and a gravitational field is that a gravitati
The HPLC Doctor
This site provides HPLC troubleshooting tips. It covers common separation problems such as peak fronting or tailing and split peaks and suggests solutions. This site will be most useful for students and practitioners who already have some background knowledge of separation theory. It will be especially helpful for laboratory or research students who are developing a new separation method or are encountering problems with their chromatographic experiments.
Middle School Portal: Math and Science Pathways (MSP2)
This activity introduces students to the dynamics of a propeller. Students will design and make a propeller. The materials needed are pencil with an eraser, scissors, sticky tape, thin cardboard, straight pin, and ice cream stick. Students may work individually or in groups. Copyright 2005 International Technology Education Association
Middle School Portal: Math and Science Pathways (MSP2)
In this activity, students explore the nature and impact of friction. Students will observe, predict and record an object's motion over smooth, slippery and rough surfaces. These tasks will include an introduction to basic statics and dynamics in engineering through a discussion of forces and friction and a hands-on activity. Learners conduct 2 demonstrations using marbles and coins to learn about friction. Forces, simple vectors and free body diagrams which depict the forces can be discussed wi
This book addresses the following topics: Iterations and fixed points; bifurcations; conjugacy; space and time averages; the contraction fixed point theorem; Hutchinson's theorem and fractal images; hyperbolicity; and symbolic dynamics. 151 page pdf file.
A semaphorin code defines subpopulations of spinal motor neurons during mouse development.
In the spinal cord, motor neurons (MNs) with similar muscle targets and sensory inputs are grouped together into motor pools. To date, relatively little is known about the molecular mechanisms that control the establishment of pool-specific circuitry. Semaphorins, a large family of secreted and cell surface proteins, are important mediators of developmental processes such as axon guidance and cell migration. Here, we used mRNA in situ hybridization to study the expression patterns of semaphorins
Tips for Identifying Poison Ivy
This online article, from Biodiversity Counts, is a tip sheet to help students learn how to spot and avoid poison ivy. Specifically, it covers: an overview of the different varieties of the plant that grow in the Americas and Asia; an illustration of the compound leaf with three leaflets (trifoliate); details about poison ivy's leaf type, leaf arrangement, growth form, flowers, fruits, and relatives; how contact with the plant causes a hypersensitivity reaction in most people; a trick you can tr