Redox Potentiometry
This site contains materials from a lecture course in Biophysics, covering activity, free energy, equilibrium constants, and effect of pH on redox potentials, potentiometry, and reaction rates. The redox-specific content is based on interesting biological reactions not often found in chemistry texts.
Mendel's experiments
In this web lab, Gregor Mendel directs students through interactive virtual experiments. Students experiment with pea plants to discover how the seven pairs of traits that Mendel studied are inherited. The lab can be completed linearly, or students can move to a particular segment using the Sections menu. After they observe pea plants and infer the number of traits present, students perform five plant crosses. Mendel instructs students to search for patterns in the transmission of traits. Next,
What Is Service Learning?
Learning in the context of real-world problems through activities that not only promote student learning but also serve the public. Environmental and analytical chemistry courses provide a background for using scientific skills to work with the community and gain an understanding of a scientist's role in society. A group of faculty was convened to examine how service learning can best fit into chemistry instructional programs.
Middle School Portal: Math and Science Pathways (MSP2)
In this activity, students learn about the body mass index (BMI) formula and how it can be used to determine health risk. The activity is part of the Figure This! collection of 80 online mathematical challenges emphasizing real world uses of mathematics. The activity web page contains links to a solution hint, the solution, and to other math questions, such as how the BMI formula can be written to show weight in kilograms and height in centimeters. Students and their families are challenged to u
Electricity
This document examines the mysterious force of electricity. The reading will focus on the physical properties of electricity and discuss topics such as (1) The Atom of Carbon, (2) Static electricity, (3) Magnets are special, (4) Magnetic fields can produce electricity, (5) Batteries produce electricity, (6) Electricity travels in circuits, (7) Secondary energy source, (8) Making electricity, (9) Moving electricity from power plants to homes, (10) Fuels that make electricity, (11) Fossil fuel pow
Wireless Networking in the Developing World
The massive popularity of wireless networking has caused equipment costs to continually plummet, while equipment capabilities continue to increase. By applying this technology in areas that are badly in need of critical communications infrastructure, more people can be brought online than ever before, in less time, for very little cost. We hope to not only convince you that this is possible, but also show how we have made such networks work, and to give you the information and tools you need to
Ten Activities to Consider Before Developing Your First Online Course
Many educators have asked me what they can do to prepare before they formally begin to develop an online course. Becoming familiar with the online learning environment and knowing how to create web pages can give you a head start in developing your course.Consider preparing with one or more of the 10 activities presented.
Cotton: Building a Better Plant
Plant genome research is already revolutionizing the field of biology. Currently, scientists are unlocking the secrets of some of the most important plants in our lives, including corn, cotton and potatoes. Secrets of Plant Genomes: Revealed! takes viewers on a lively, upbeat journey that explores how these plants got to be the way they are and investigates how we can make better use of them in the future. Plant scientists are hard at work--in the lab, in the field and at the computer--to increa
Corn: The Dynamic Genome
Plant genome research is already revolutionizing the field of biology. Currently, scientists are unlocking the secrets of some of the most important plants in our lives, including corn, cotton and potatoes. Secrets of Plant Genomes: Revealed! takes viewers on a lively, upbeat journey that explores how these plants got to be the way they are and investigates how we can make better use of them in the future. Plant scientists are hard at work--in the lab, in the field and at the computer--to increa
Bioterrorism: plague as a biological weapon
Bioterrorism is the utilization of microorganisms or toxins in order to produce a disease and/or death in human beings, animals or plants. Different from conventional weaponry, relatively economic means are used that allow the elimination of living beings without destroying the surrounding atmosphere. The most probably method for spread of bioweapons is aerial transmission, continuing into water supplies and food. The CDC (US Centers for Disease Control and Prevention, Atlanta) has subdivided in
Bacteriophage T4
This is a highly accurate visualization of the Bacteriophage T4 based on Cryo-EM datasets of the virus. The scope of the animation is to show the infection process of the T4 into an E. coli cell. All scientific data sets and motion based off of research from Michael Rossmann Laboratory (Purdue University). Courtesy of Seyet LLC.
ABCD's of MELANOMA
ABCD's of Melanoma.
Malignant Melanoma is the most aggressive of malignant cutaneous tumours. Cases with lymphonode involvement, and distant metastases, carry a very poor prognosis, (50% and 20% respectively alive in 5 years), while those presenting without evident lymphonode involvement have a much better survival rate (60% alive in 5 years).
It is therefore extremely important to do early malignant melanoma diagnosis. There are several criteria that may lead to the diagnosis of a malignant m
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
References 2.005 Quiz 2 Review - Cycles Fill up the Canvas Early Virginia Religious Petitions American Environmental Photographs, 1891-1936 Learning through Technology Distinguished Innovator Lecture Series: Ann Winblad
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features journal entries from 20 points in the journey of Lewis and Clark: mission preparations, winter in St. Louis, first council with Indians, death of Sergeant Floyd, first killing of a buffalo, Sioux camps, near run-in with Teton Sioux, Rocky Mountains, Nez Perce, falls of the Columbia River, and others. The site also provides letters from Thomas Jefferson to Lewis and Clark; images of people, places, plants, and animals; and maps.
Early Virginia Religious Petitions presents images of 423 petitions submitted to the Virginia legislature between 1774 and 1802 from more than eighty counties and cities. Drawn from the Library of Virginia's Legislative Petitions collection, the petitions concern such topics as the historic debate over the separation of church and state championed by James Madison and Thomas Jefferson, the rights of dissenters such as Quakers and Baptists, the sale and division of property in the established chu
This collection consists of approximately 4,500 photographs documenting natural environments, ecologies, and plant communities in the United States at the end of the nineteenth and the beginning of the twentieth century. Produced between 1891 and 1936 by a group of American botanists generally regarded as one of the most influential in the development of modern ecological studies, these photographs provide an overview of important representative natural landscapes across the nation. They demonst
Open University Educational Technology researcher, Eileen Scanlon looks at the benefits of 'inquiry learning' for young students, and how she is using the experiences to help design a customized tool kit to support evidence-based 'enquiry learning'.
Ann Winblad is the co-founding Partner of Hummer Winblad Venture Partners. She is a well-known and respected software industry entrepreneur and technology leader. Her background and experience have been chronicled in many national business and trade publications.
Ann has over 25 years of experience in the software industry. She began her career as a systems programmer at the Federal Reserve Bank. In 1976 Ann co-founded Open Systems, Inc., a top selling accounting software company, with a $500 i
