A Genetics Lab in a Very Unusual Place
This online article, from the museum's Musings newsletter for educators, looks at the fully functional Genetics Laboratory that was part of the exhibition The Genomic Revolution. It discusses: the significance of the recent sequencing of the human genome in a historical perspective the process visitors underwent during their hour-and-a-half visit to the lab, where they extracted, isolated, visualized, and sequenced their DNA the follow-up activities for visitors on the AMNH Web site.
The Struggle for Existence: Competition Between Bacterial Strains
Two strains of Escherichia coli are grown in broth and plated out at intervals. A population growth curve is plotted for each strain. The two strains are then grown together for several days in different types of broth. Students from each day's laboratory plate out the mixed culture on selective media. Data are pooled. Population curves are plotted for the two strains in competition. With different conditions, it is possible to observe competitive displacement of one strain by another.
Loss of sea otters, loss of kelp forests
Events that affect one population typically affect other populations. This phenomenon is demonstrated by the otter-urchin-kelp connection.
Killdeer are birds, and they lay eggs just like all other birds do. Killdeer lay their eggs on the ground, in gravel, on rooftops, or wherever the splotchy pattern of the eggs may be hidden best. The eggshells are hard for added protection.
Switchgrass Science - Partners Video Magazine
At the University of Tennessee, switchgrass is all the buzz - a plant that's farmer and environment-friendly, and a cheap alternative to high-priced corn for making ethanol. Switchgrass Science is a segment from Partners Video Magazine's latest episode, Fueling America. To view the entire episode visit: http://www.csrees.usda.gov/newsroom/partners/partners.html
Strong shaking in Los Angeles expected from southern San Andreas earthquake
The southernmost San Andreas fault has a high probability of rupturing in a large (greater than magnitude 7.5) earthquake sometime during the next few decades. New simulations show that the chain of sedimentary basins between San Bernardino and downtown Los Angeles form an effective waveguide that channels Love waves along the southern edge of the San Bernardino and San Gabriel Mountains. Earthquake scenarios with northward rupture, in which the guided wave is efficiently excited, produce unusua
RHESSI Observes the Flare over AR9906 - rotate view with times
Zoom in (with rotation) to solar active region AR9906 on April 21, 2002 with SOHO-EIT,TRACE and RHESSI data. RHESSI observes x-rays from this flare. The red contours represent the 12-25 keV photon energy range and the blue contours represent 50-100 keV.
Reading comprehension: Home and community
Using the telephone in an efficient manner to give tips about recycling. An exercise to complete a form and a speaking exercise about recycling. Being able to give instructions about recycling.
Powell Lecture 2011: Part I
The W. Allan Powell Lectureship in Chemistry has been held annually since 1988 and is hosted by the University of Richmond and the Virginia Section of the ACS. The Powell Lectureship was established to honor Dr. W. Allan Powell who served the University for 34 years, 23 of which he chaired the chemistry department. Harry B. Gray is the Arnold O. Beckman Professor of Chemistry and the founding director of the Beckman Institute at the California Institute of Technology. After graduate study and r
The Numbers Behind Hunger: Calorie Counting
Following are a series of activities in which students apply various math skills to better understand the problems of world hunger and what steps are being taken to reduce the number of people without enough to eat. This activity makes use of basic math skills to learn more about the energy value of food. A link to the US Dept. of Agriculture National Nutrient Database is listed here. Teachers may want to browse through the database first and determine the best way to present it to students: let
GIS Database Development
The lessons in Geography 484 cover creation and editing of vector data layers; georeferencing image files; principles of relational database design; acquiring data via the Internet; managing the coordinate systems of datasets; metadata creation and editing; attribute and spatial joins, and thematic mapping for the sake of analysis; and much more. We give the people who feel they have the experience and skills covered in Geography 484 the option of testing out of the course by completing the fina
Hank Harris' Shrimp Research at Iowa State University
Research News from Iowa State University's College of Agriculture and Life Sciences. Hank Harris' Shrimp Research at Iowa State University. Experimental Transmission of Necrotizing Hepatopancreatitis Bacteria to Post-Larval Litopeneaus Vannamei.
Gestión y difusión de revistas académicas vía Internet
A Spanish speaking video with a 23 minutes summary of a one day workshop (Buenos Aires, June 13th., 2007) about journal management and access in the Web. Workshop for journal editors organized by the Information Center of the National Council of Research in Argentina (CONICET-CAICYT), the Latin American Council of Social Sciences (CLACSO), the International Network for the Availability of Scientific Publications (INASP) and the Public Knowledge Project-Open Journal System of the Simon Fraser and
Spastic Paraplegia - Reflexes Exam - Abnormal (Pathological) Sub-exam - Patient 5
This video features a 54-year-old white male with a history of spastic paraplegia (diagnosed in 1994) and no previous history of heart disease or cardiac workup. He presented to the Emergency Room complaining of three days on-and-off retrosternal chest pain. Patient presented to the ER complaining of three days on-and-off retrosternal chest pain, rated 3/10, lasting approximately 30 minutes, occurring multiple times daily at rest or during activity. The first episode occurred three days before
How Lou Got the Flu
This article from our family magazine series traces the spread of the flu virus from a duck in China to a young girl in Kansas. The article begins by introducing kids to Louise and the symptoms of influenza. On a series of clickable screens, they learn how the flu virus traveled from a duck to a pig to a farmer to a shopper to a student to Louise. A sidebar (But I Got a Flu Shot Last Year...) explains why influenza is trickier to outsmart than smallpox and polio. Another sidebar ("Microbes on th
Tree of Life Cladogram
This fun Web site is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, they explore the Tree of Life cladogram. The site begins with a brief explanation of cladograms and how the Tree of Life shows the relationship of all living things on Earth. A cladogram of fruit is used to demonstrate on a small scale how scientists use this tool to understand how things are similar and different.
Digital Library Object - Oral history of LTG Henry E. Emerson [interview].
Link To Full Record
European Heart Journal - My Cardio Interview: Patrick Serruys & Ulf Landmesser on drug scaffolds
Patrick Serruys in conversation with Ulf Landmesser: Biodegradable drug eluting scaffold - the 4th revolution