USA or China, Who Emits Most CO2
An average American cause 4 times more CO2-emissions than a person in China. However, due to its large population, China emits a lot of CO2 in total.
Interactive Computer Teaching Module for Radiologic-Pathologic Correlations in Breast Imaging
This is a web-based tutorial designed for senior level medical students, radiology or surgery residents or fellows. It begins with an introduction to the BIRADS (Breast Ima
3.2 Natural dives The physiology of the diving response can be studied in the laboratory, but investigating the behaviour of a diving mammal in its natural environment can be more of a problem. However, modern physiological techniques have made it possible to record continuously physiological variables (such as heart rate) and information on depth and position during the spontaneous dives in the wild that are part of the animal's normal behaviour. Most such findings show that the majority of an animal's dives
2.7 … and becoming more intelligent Intelligence is a useful commodity: it can help an animal to make sense of its environment and cope with the demands of social behaviour (including courtship and competition). Hunters tend to be relatively intelligent, and otters, pinnipeds and cetaceans, for example, share a playful curiosity that is characteristic of animals that catch other animals for a living. Some especially extravagant claims have been made for the intelligence of the toothed whales, largely because these animals use c
2.5 … and getting larger Size offers a number of biological advantages, including some protection from predation, but it can also help in reducing heat loss. A large mammal has a large body mass (generating heat) relative to its surface area (losing heat). But there will be constraints on any evolutionary trend of increasing body mass in some aquatic mammals. Seals, sea-lions and toothed whales have to remain agile enough to chase their prey, and the pinnipeds as a whole have to be able to move about on land, but the
2.4 Staying warm … In this section, you will meet the term ‘thermal conductivity’ and you will be asked to accept that it is ‘a measure of how readily heat flows from a particular material’. You may be uncomfortable about the lack of detailed explanation of how it is measured and of actual values and units. However, at al 2.3 Moving about Water is more viscous than air, so it can take more effort to move through water (try running in a swimming pool). Friction between the body and the water causes turbulence, which holds a swimmer back, and the faster the swimmer tries to move, the greater the turbulence. One way of avoiding the problem is to leave the water for short periods and travel through air, and some of the smaller pinnipeds and cetaceans resort to ‘porpoising’, leaping from the water for short periods when they ne Acknowledgements The content acknowledged below is Proprietary (see terms and conditions) and is used under licence. Grateful acknowledgement is made to the following sources for permission to reproduce material in this unit: Figure 2(f) © National Power; Figure 3 Courtesy of IBM Corporation, Research Division, Almaden Research Center; Figure 14 ‘Fuel hoarder sentenced’ by Maurice Weaver, printed 6 April 2001, Telegraph Gro 5.1 Energy services Except in the form of food, no one needs or wants energy as such. That is to say, no one wants to eat coal or uranium, drink oil, breathe natural gas or be directly connected to an electricity supply. What people want is energy services – those services which energy uniquely can provide. Principally, these are: heat, for warming rooms, for washing and for processing materials; lighting, both interior and exterior; motive power, for a myriad of uses from pumping fluids to lifti 2.5 ‘Difference’ and identity If differences on the basis of gender, ethnicity and disability are socially constructed, how should people view their identities, for example as men, or disabled people, or people of African–Caribbean origin? Where do such identities come from, and how useful are they in explaining people's experience of communication in care services? Foucault’s ideas about changing discourses, and the ways in which they construct people's view of the world, can be applied to issues of ethnicity a Guernica 3D 3.3.2 Water pollution from coal mines Most underground and some surface mines lie well below the water table. Both therefore have the potential to pollute any groundwater that flows through them. The root cause of the problem is the action of aerobic bacteria on pyrite (FeS2) within the coal sequence. This process releases metal and sulphate ions into solution, which in turn causes the acidity of the mine water to increase: 1.7 How old is coal? Not surprisingly, the distribution of coal deposits through time corresponds closely to the origin and distribution of land plants. (This is discussed further in Section 4.) Coals are commonly found in rocks from Carboniferous times onwards, Devonian coals are rare, and pre-Silurian true coals are never found. This coincides with evidence for the evolution of land plants, which first appeared in Silurian times about 400 Ma (million years) ago, colonized the land surface rapidly through the De Reuters Today: Europe deal hands ECB watchdog role Walk, Run, Jump! Walk, Run, Jump! The Heart of the Matter Move Your Muscles! Move Your Muscles!
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Dec. 13 - Europe reaches a deal to give the ECB new powers to oversee the bloc's banks. U.S. Fed says interest rates will stay near zero until unemployment falls to at least 6.5%, boosts monthly bond buying.
In this activity, students participate in a series of timed relay races using their skeletal muscles. The compare the movement of skeletal muscle and relate how engineers help astronauts exercise skeletal muscles in space.
In this activity, students participate in a series of timed relay races using their skeletal muscles. The compare the movement of skeletal muscle and relate how engineers help astronauts exercise skeletal muscles in space.
This lesson describes how the circulatory system works, including the heart, blood vessels and blood. Students learn about the chambers and valves of the heart, the difference between veins and arteries, and the different components of blood. This lesson also covers the technology engineers have developed to repair the heart if it is damaged. Students also understand how the circulatory system is affected during spaceflight (e.g., astronauts lose muscle in their heart during space travel).
This lesson covers the topic of muscles. Students learn about the three different types of muscles in the human body and the effects of microgravity on muscles. Students also learn how astronauts need to exercise in order to lessen muscle atrophy in space. Students discover what types of equipment engineers design to help the astronauts exercise while in space.
This lesson covers the topic of muscles. Students learn about the three different types of muscles in the human body and the effects of microgravity on muscles. Students also learn how astronauts need to exercise in order to lessen muscle atrophy in space. Students discover what types of equipment engineers design to help the astronauts exercise while in space.
