Adaptation to Human Populations Is Revealed by Within-Host Polymorphisms in HIV-1 and Hepatitis C Vi
CD8+ cytotoxic T-lymphocytes (CTLs) perform a critical role in the immune control of viral infections, including those caused by human immunodeficiency virus type 1 (HIV-1) and hepatitis C virus (HCV). As a result, genetic variation at CTL epitopes is strongly influenced by host-specific selection for either escape from the immune response, or reversion due to the replicative costs of escape mutations in the absence of CTL recognition. Under strong CTL-mediated selection, codon positions within
Author(s): No creator set

License information
Related content

A snow leopard
Snow leopards are endangered because their bones are often used in traditional Asian medicine. Also, their habitat has been damaged and snow leopards sometimes attack herds of goats and sheep for food. The owners of these animals want to kill the snow leopards so they don't keep attacking the herds.
Author(s): Creator not set

License information
Related content

Rights not set

Le commerce équitable - Sylvain Allemand

Une conférence de l'UTLS au Lycée

Le commerce équitable par Sylvain Allemand

Lycée privé de Marcq (59 Marcq en Baroeul)


Author(s): No creator set

License information
Related content

American Literature, Art and Music in the 1800s
This video discusses some of the famous authors artists, architects, and musicians of the 1800s and a few of their most famous works It also discusses some of the changes in daily life in the 1800s. This is a great video to use as an overview of the time period and it provides good insights and images during its five minute running time. The video moves rapidly and so it may have to be paused to enable students to catch-up.
Author(s): No creator set

License information
Related content

Science Bulletins: MESSENGER Mission to Mercury
The MESSENGER orbiter's January 2008 flyby of the planet Mercury was historic. The last time a spacecraft visited was 1975, and it only mapped half the planet. MESSENGER is now sending back a complete picture of Mercury, shedding light on its geological history. But the ongoing mission will return much more than images. Its data on the planet's core, magnetic field, composition, and other attributes will help scientists answer pressing questions about the evolution of the terrestrial planets and
Author(s): No creator set

License information
Related content

Origins of Black History Month
This three minute video explains those that worked to promote African American history month. Why Febrary was selected is explained as well and the importance of Carter Woodson. A nice overview, but the celebrities featured are not named so teachers may want to point out why they were chosen for this video.

Author(s): No creator set

License information
Related content

Dutch firm's electric Tuk Tuk's
Business is booming for a Dutch company which is the first in the world to produce an electric version of the motorised rickshaw, or tuk tuk, that also meets EU safety rules.
Author(s): No creator set

License information
Related content

Environmental Impact Assessment (EIA) Instructional Guide
This Instructional Guide has been developed to provide instructors using the Environmental Impact Assessment Course Module with an understanding of the design of the Module so that they can customise the its material and assessment to the needs of their learners and location.
Author(s): No creator set

License information
Related content

Environmental Impact Assessment (EIA)
The Module is designed to provide a critical overview of the theory and practice of Environmental Impact Assessment (EIA) as operated internationally to those students who need to understand EIA: this includes formal students being graduate and postgraduate students, plus practitioners/professionals. Within this framework there are opportunities to customise the material to reflect local jurisdictional procedures and issues.
Author(s): No creator set

License information
Related content

Building Nature: Topics in the Environmental History of Seattle and Spokane
This project shows how certain documents—business records, booster brochures, newspaper articles, city plans, engineering surveys and political campaign literature, to name a few—testify to the environmental history of urban places. The documents in this packet focus on trade, city boosters, urban design and planning.
Author(s): No creator set

License information
Related content

Une nouvelle théorie du cancer (audio)

Conférence publique proposant une vision darwinienne des processus de différenciation cellulaire pouvant rendre compte du phénomène de tumorisation.

La conférence a été donnée à l'Université Victor Segalen Bordeaux 2 dans le cadre du cycle de conférences "L'invité du Mercredi" / Saison 2005-2006 sur le thème "L'espoir". Service culturel Université Victor Segalen de Bordeaux 2 /
Author(s): No creator set

License information
Related content

Big Screen Keys Tutorial
Author(s): No creator set

License information
Related content

This Week @Minnesota: Feb. 20-25, 2011
In our third edition of "This Week @Minnesota" for the week of Feb. 20-25, 2011, we join students at the State Capitol for Support the U Day when President Robert Bruininks testified to the House Higher Education Committee about the State of the University. Plus, we join the Gopher wrestling team as they take on their border rivals -- the Iowa Hawkeyes -- and give you a look at a campus-wide snowball fight. Connect with us on Twitter @UMNews and let us know what you'd like to see next week on
Author(s): No creator set

License information
Related content

Cool Views
In this activity, students will learn the meaning of preservation and conservation and identify themselves and others as preservationists or conservationists in relation to specific environmental issues. They will understand how an environmental point of view affects the approach to an engineering problem.
Author(s): No creator set

License information
Related content

Moving without Wheels
In a class demonstration, students observe a simple water cycle model to better understand its role in pollutant transport. This activity shows one way in which pollution is affected by the water cycle; it simulates a point source of pollution in a lake and the resulting environmental consequences.
Author(s): No creator set

License information
Related content

Concept Development Studies in Chemistry
"Concept Development Studies in Chemistry" is an on-line textbook for an Introductory General Chemistry course. Each module develops a central concept in Chemistry from experimental observations and inductive reasoning. This approach complements an interactive or active learning teaching approach.
Author(s): No creator set

License information
Related content

Signals, Systems, and Transforms (under construction)
This version of Rice University Elec 301 - Signals, Systems, and Transforms - is under active development in Fall 2003.
Author(s): No creator set

License information
Related content

Finite Impulse Response
A course on FIR filter design.
Author(s): No creator set

License information
Related content

"We Have Got a Good Friend in John Collier": A Taos Pueblo Tries to Sell the Indian New Deal
The Indian Reorganization Act of 1934, which became known as the Indian New Deal, dramatically changed the federal government's Indian policy. Although John Collier, the commissioner of Indian affairs who was responsible for the new policy, may have viewed Indians with great sympathy, not all Native Americans viewed his programs in equally positive terms. Antonio Luhan, the husband of the wealthy writer Mabel Dodge Luhan and a Taos Pueblo Indian, was a friend and supporter of John Collier. In th
Author(s): No creator set

License information
Related content

"Genesee Had Railroads": Kenneth Platt Recalls the Importance of the Railroad to Late Nineteenth-Cen
The penetration of the railroads into the West in the late nineteenth century had a profound impact on local economies. For a period of ten years in the 1880s the Latah County, Idaho town of Genesee experienced this phenomenon. One town boomed while its neighbors languished in economic isolation, largely as a result of the rail station in Genesee. In this oral history interview, Kenneth Platt described the railroad's impact on Latah County.
Author(s): No creator set

License information
Related content