IP19 Postboxes
A collection of postboxes in postcode IP19
Author(s): Adrian Cable

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Exercice 3 (Logique, ensembles, raisonnements) [00109]

Exo7. Exercices de mathématiques pour les étudiants.
Retrouvez la correction écrite sur http://exo7.emath.fr

Phrase logique, "pour tout", "il existe", négation.
Bonus (à 3'11'') : nombre réel positif plus petit que tout epsilon.


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It Takes All Kinds to Make a World
This fun Web site is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, marine biologist Melanie Stiassny introduces kids to biodiversity in the ocean. The article contains three engaging, kid-friendly sections: Diversity of Life on Earth, which has an overview of six major groups of life on Earth and challenges kids to determine the correct group for nine different life forms, including blue-green alga, spiny lobster, red mangrove, and white marlin.
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Milstein Hall of Ocean Life
This Web site, created to complement the Hall of Ocean Life, looks at the cradle of life for our planet, along with its key to our future. It includes the following sections: Dioramas is an in-depth look at the Hall of Ocean Life's dioramas. They are: Andros Coral Reef, Diving Birds, Diving for Pearls, Polar Bear, Sargasso Sea, Walrus, West Indian Manatee, Northern Elephant Seal, Northern Sea Lion, Harbor Seal, Dolphin and Tuna, Sea Otter, Tiger Shark, and Sperm Whale and Giant Squid. Ecosystems
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2.1 Environment and technology
Global warming: are we responsible? Is our environmental impact damaging the planet? This unit examines the use of ozone depleting technology, the impact of fossil fuel use and explores how the development of technology can influence the direction of a society. From the Industrial Revolution to the present day find out how we have changed the planet.
Author(s): The Open University

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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

6.2 Dual labour market theory

According to this theory, the labour market is composed of self-contained sub-markets or segments. Segmentation economists argue that ignoring the different identities of these segments and the constraints they place on the workers makes it impossible to understand the nature of labour market disadvantage. Basically, the dual approach hypothesises that a dichotomy has developed over time between a high-wage primary segment and a low-wage secondary segment. Working conditions in the primary se
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Licensed under a Creative Commons Attribution - NonCommercial-ShareAlike 2.0 Licence - see http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ - Original copyright The Open University

Explorers of North America
Explorers of North America Using the map given in class for the United States, draw the paths of explorers.
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What time is it?
Students will practice telling time to the hour, half hour, and minute.
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Help the Zoo!
Help the workers and animals at Henry Doorly Zoo! Research animals to find which habitat would be best for them and why.
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Get Healthy, Eat The Pyramid!
The kind of food you eat makes a difference in how you feel and even how you are able to think in school. This activity will give you the chance to learn how to keep your body happy and healthy!
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Inquiry or Problem Based Learning Lesson
You are an up and coming scientist determined to help find the best alternative fuel. You need to choose an alternative fuel from the list provided, research your choice using the links and prepare a report for your local government about the new fuel source.
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Honeybee Venom Detected by Enzyme Immunoassay
The venom of the honeybee, Apis mellifera, contains numerous enzymes, volatiles, and other components. Allergic individuals develop anti-venom antibodies which may cause hives, anaphylactic shock, and death. In this exercise students detect concentrations of bee venom on nitrocellulose membranes following incubation of membranes with anti-venom antibodies, enzyme-conjugated secondary antibodies, and a colorimetric substrate. The intensity of the colored substrate deposited on the membrane is pro
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Chicken Skeleton - Ball and Socket Joint (Limb)
The chicken has wings modified for flight, although it spends much it its time on ground. The bones are very light and long with finger-like ends. The ball and socket joint and hinge joint allow the chicken to move its wing in different directions.
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Earth Rotation from Galileo Imagery: 3600 x Real-Time
This animation is one in a series created to show an accurate representation of the Earths rotation at different temporal resolutions. The animation is created from images taken by the Galileo spacecraft during a close pass of the Earth on December 11-12, 1990. The animations range from real-time, in which no rotation can be perceived, to 3600 times real-time, in which both the Earths rotation and cloud motion can bee seen. The series also includes an animation in which the Earths rotation has b
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Molecular Classification - Prof. Chris Man (Part 2)
Recent advances in genomic and proteomic technologies have revolutionized our way of classifying diseases. These high-throughput technologies allow the development of powerful and multivariate classifiers to distinguish different diseases or tumors based on their molecular profiles. Molecular classification provides a new way to distinguish histologically similar but molecularly different types of tumors, and hence improves tumor diagnosis and prognosis. In this course, we introduce major concep
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Multipolar representation of protein structure
Background That the structure determines the function of proteins is a central paradigm in biology. However, protein functions are more directly related to cooperative effects at the residue and multi-residue scales. As such, current representations based on atomic coordinates can be considered inadequate. Bridging the gap between atomic-level structure and overall protein-level functionality requires parameterizations of the protein structure (and other physicochemical properties) in a quasi-co
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Methylphenidate Decreased the Amount of Glucose Needed by the Brain to Perform a Cognitive Task
The use of stimulants (methylphenidate and amphetamine) as cognitive enhancers by the general public is increasing and is controversial. It is still unclear how they work or why they improve performance in some individuals but impair it in others. To test the hypothesis that stimulants enhance signal to noise ratio of neuronal activity and thereby reduce cerebral activity by increasing efficiency, we measured the effects of methylphenidate on brain glucose utilization in healthy adults. We measu
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Drawing Shadows to Stone: Photographing North Pacific Peoples
This Web site, created to complement an American Museum of Natural History exhibition, takes a look at an anthropological expedition to record the people and cultures of the North Pacific.
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Paradise Redefined: Part 2
A journey to a coral reef chain hidden in the Central Pacific forces scientists to revisit the definition of a pristine environment. Part Two.
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Obesity is Socially Contagious
Are your friends making you fat? Or keeping you slender? According to new research from Harvard and the University of California, San Diego, the short answer on both counts is "yes.”
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