3.4 Integration of anatomical features and biochemical and physiological strategies in endurers

The endurers, large animals with a relatively low surface area: volume ratio, have problems in losing heat from the body when exposed to high T a. Certain large lizard species behave like endurers, but they are evaders and evaporators too, a salutary reminder that we should not apply classification criteria too rigidly.

Dipsosaurus dorsalis, the desert iguana, lives in the Sonoran desert and is found most commonly in dry sandy areas where creosote bushes grow (S
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1.5 The physics and chemistry of coal formation

Coal is a type of sediment made up mainly of lithified plant remains. But how does spongy, rotting plant debris become a hard seam of coal? As discussed earlier, plant material growing in mires dies, and then rots under anoxic conditions to form peat (by the process of humification). With time, the mire becomes covered with layers of sediment, the weight of which squeezes water and gas out of the pore spaces and compacts the vegetation. As subsidence allows deposition of further mire-s
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28.12.2011 – Langsam gesprochene Nachrichten
Trainieren Sie Ihr Hörverstehen mit authentischen Materialien. Nutzen Sie die Nachrichten der Deutschen Welle von Mittwoch – als Text und als verständlich gesprochene Audio-Datei.Die USA haben Syrien zu einer umfangreichen Zusammenarbeit mit den Beobachtern der Arabischen Liga aufgefordert. Sollte das syrische Regime weiterhin Widerstand gegen die Bemühungen der Liga leisten oder sie ignorieren, dann werde die internationale Gemeinschaft andere Mittel zum Schutz syrischer Zivilisten in Betr
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Introduction to Human Physiology
Steven Telleen
This chapter provides an introduction to human physiology. It is intended to help students understand key concepts that will help them navigate the specific details in later chapters.

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Feinstein details harrowing CIA "enhanced interrogation" techniques
Senate Intelligence Committee Chair Senator Dianne Feinstein says CIA detainees were “stripped naked, diapered, physically struck and put in various painful stress positions” in the aftermath of the September 11, 2001 attacks. Rough Cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provid
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Low magnification SEM image of open cell polyurethane foam
If a gas is injected into a liquid it forms a cellular foam structure. When a thermoset prepolymer of low viscosity is foamed, the polymer can drain from the cell walls (driven by surface tension) before it sets at the cell edges, leaving an open-celled foam. The cell edges have three concave sides, giving rise to the tri-cuspid cross section visible at the bottom of this image. The average co-ordination number for the nodes (where struts meet) is four, giving tetrahedral junctions.
Author(s): DoITPoMS, University of Cambridge,Dr J A Elliott,

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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Unravelling the mysteries of chromsomes
The DNA in our cells is tightly packed into structures called chromosomes. The role of the physical structure of chromosomes in diseases and genetics is being explored thanks to recent advances in technology that allow scientists to look at how the DNA is packaged into chromatin- the structures that form chromosomes. In this lecture Dr Grigoryev will discuss current models of chromosome organisation, several examples of cutting edge research aimed at understanding role of chromatin in cell diffe
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9.3 Monoamine oxidase A, maltreatment during childhood and later violence

One Dutch family was found to have a history of antisocial (aggressive) behaviour. Genetic studies were conducted and a potential culprit gene MAOA, monoamine oxidase A, identified. The aggressive individuals in the family appeared to have a mutant gene which produced no MAOAP, an enzyme involved in the breakdown of certain neurotransmitters, including serotonin. A knockout mouse model, in which the MAOA gene was inactive, was also found to be aggressive, apparently confirming the role of MAO
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2.2 Winning coal in former times

Coal was probably first used as a fuel by early Chinese civilizations, and there is evidence for coal working in the UK since Roman times. However, early approaches to mining were limited by the available technology, and left much of the coal behind.

At first, coal was dug from seams exposed at the surface in shallow excavations into valley sides that followed the coal seam. The amount of coal that could be extracted from these trenches and from adits (short horizontal tunnels) w
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2.1 The Moon

David A. Rothery Teach Yourself Planets, Chapter 6, pp. 66-75, Hodder Education, 2000, 2003.

Copyright © David Rothery

In this chapter you will learn:

  • about the nearest planetary body to the Earth

  • about the long record of impact cratering on its surface, and about the ancient eruptions that flooded many low-lying areas.

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Francisco Campbell Hooker: The African Presence in Latin America
Ambassador Francisco Campbell Hooker of the Republic of Nicaragua disucsses the African presence in Latin America. Speaker Biography: Francisco Campbell is Nicaraguan Ambassador to the United States.
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Le travail des praticiens de la mémoire publique - 2ème Partie: Usages publics de la mémoire ...

2ème Partie: Usages publics de la mémoire

La table ronde intitulée « Le travail des praticiens de la mémoire publique : l’impact des contraintes matérielles et de la prise en compte du public-cible » s’est tenue le 8 octobre 2015 dans le cadre du colloque interdisciplinaire La Fabrique des mémoires publiques (Université Paul-Valéry, Montpellier, ...
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Things That are Pink

Slides present photos of objects that are pink.  The object's name and the color are written on each slide. No narration. (01:44)

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Keep on learning

Study another free course

There are more than 800 courses on OpenLearn for you to
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Learn About Things That Are Purple
In this video, students will learn about purple things. The name of the object appears on the screen as the picture is shown. Some of the purple pictures include a butterfly, jewel, jigsaw, presents, bow, heart, etc. This is a good resource to introduce or to review colors and color words in the early childhood classroom. (01:44)
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Articulate Storyline 2 test - pie chart animation
Articulate Storyline 2 test - pie chart animation - Adam Warren Keywords:UNSPECIFIED
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The reversal of cell differentiation and prospects for cell replacement therapy
The inaugural Anne McLaren Memorial Lecture, "The reversal of cell differentiation and prospects for cell replacement therapy", given by Prof Sir John Gurdon FRS, University of Cambridge, at Lady Margaret Hall, Oxford, on 7 November 2008. Visit http://media.conted.ox.ac.uk/McLaren-2008 to view the full presentation from Professor Sir John Gurdon FRS, including his slides.
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Conclusion

This free course provided an introduction to studying the arts and humanities. It took you through a series of exercises designed to develop your approach to study and learning at a distance and helped to improve your confidence as an independent learner.


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1.9 The rock cycle

As you are reading this, rocks are being formed and destroyed on the Earth. Rocks are being heated and squeezed to form new metamorphic rocks; other rocks are melting to form magmas, which eventually cool and solidify as new igneous rocks; and the processes of weathering, erosion, transport and deposition are generating new sediments. The continuous action of rock-forming processes means that (given time) any rock in the Earth's crust will become transformed into new types of rock and that th
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1 Hibernation and torpor: An introduction

This course examines hibernation, a special form of adaptation that animals can make to the ecological demands of remaining in a chosen habitat in winter. Hibernation is a state which enables energy-efficient survival when ambient temperatures are so low that foraging or simply maintaining normal core body temperature and basal metabolic rate are either energetically too costly or impossible.

Polar endotherms can maintain a high T b even when living actively at sub-zer
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