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9.2 Dynamic range

The quietest sound we can hear corresponds to a pressure wave with an amplitude of about 10 μPa, which is a very small pressure amplitude indeed. It is about 0.000 000 01 per cent of nominal atmospheric pressure, and the resultant displacement of the eardrum is less than a tenth of the diameter of a hydrogen molecule.

At the upper end of the scale, a sound that is distressingly loud might typically correspond to a pressure wave with an amplitude of 0.01 per cent of nominal atmospheric
Author(s): The Open University

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4.3 Cellular changes

Hibernation can result in the deposition of fat in adipose tissue. In tissues of finite size which are important sources of energy and sites for fuel metabolism, changes in cell structure (redistribution of organelles involved in energy metabolism and protein synthesis) are the most likely adaptation to a state of torpor. Liver hepatocytes of the hibernating dormouse (Muscardinus avellanarius), are visibly different from those of arousing and euthermic dormice when viewed in thin secti
Author(s): The Open University

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Learning outcomes

After studying this course, you should be able to:

  • explain the principles that underlie the ability of wave power to deliver useable energy

  • outline the technologies that are used to harness the power of waves

  • discuss the positive and negative aspects of wave energy in relation to natural and human aspects of the environment.


Author(s): The Open University

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Introduction

Access to safe, clean and sustainable energy supplies is one of the greatest challenges facing humanity during the twenty-first century. This course will survey the world's present energy systems and their sustainability problems, together with some of the possible solutions to those problems and how these might emerge in practice.

Throughout history, the use of energy has been central to the functioning and development of human societies. But during the nineteenth and twentieth centuri
Author(s): The Open University

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Engaging students, engaging industry and engaging enterprise
This reflective case study and poster relates to a specific event staged by students and examines the phases and critical points within the whole process. It identifies some key learning outcomes for all involved
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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Texas A&M: Expand Your Horizons
http://geosciences.tamu.edu Texas A&M offers uncommon research opportunities for undergraduate and graduate students, who receive the opportunity to work with some of the top minds in their fields. The College of Geosciences has one of the largest research programs in The Texas A&M University System.
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How many bodies? The clinic, the kitchen and the context of obesity
Emily Yates-Doerr, Amsterdam Institute for Social Science Research, gves a talk for the UBVO seminar series
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3.8 Data modelling and databases

The subject of databases becomes very complex with deeper study. This is not so much because database software requires great skill to make it do what is needed, but because database design begins with a deep understanding and analysis of what the entities and attributes are, and the relationships between entities. This is data modelling, and very little of it has anything to do with computers; rather it is much more about studying carefully how organisations work, how information is a
Author(s): The Open University

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President Leo Lambert dedicates Scott Studios
Elon University leaders have dedicated a new facility on West Haggard Avenue that gives performing arts students expanded rehearsal and studio space that complement existing venues in the Center for the Arts.
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Sara Tsai: Runner and engineer
A serious injury inspired senior student-athlete Sara Tsai to pursue a degree in mechanical engineering and a future in helping others.
Author(s): Zac Ellis

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How the Jews Became Japanese: And Other Stories of Brazilian Nationality and Ethnicity
What are the intellectual paths that scholars walk when they assume that ethnic specificity is a dominant social or cultural phenomenon that overshadows commonality?
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The Buyback Fund That Gives Back
A buyback fund we launched in 2011 has continued to grow in 2014 and is now open to small investors.
Author(s): Theo Vermaelen and Urs Peyer, INSEAD Professors of

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Virtual Maths - 3D shapes, area of cylinder
Interactive simulation demonstrating the formula and calculation of the area of a cylinder
Author(s): Leeds Metropolitan University

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The Global Distribution of Income and the Politics of Globalisation - embedded liberal capitalism [A
Speaker(s): Dr María Ana Lugo, Professor Branko Milanovic, Dr Paul Segal | The panel discuss the evolution of the global distribution of income and political implications, highlighting endogenous forces of rising inequality in liberal capitalism embedded in globalisation. The last quarter century of globalisation has witnessed the largest reshuffle of global incomes since the Industrial Revolution. The global Gini index declined by about 2 points over the twenty-five year period 1988-2013, whil
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Le rôle historique des institutions dans le progrès des sciences / Jacques Blamont

Le rôle historique des institutions dans le progrès des sciences / Jacques Émile Blamont. Conférence donnée dans le cadre de L'Institut des Études Doctorales (IED) et présentée par Michel Eliard, directeur de l'URF de Sociologie de l'université du Mirail. Université Toulouse II-Le Mirail, 3 mai 1999.


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School activities: Evolutionary tree of mammals
This introduction to the evolution of mammals considers Darwin's observations on mammals and how he noticed that species fell into natural groups. This free course, School activities: Evolutionary tree of mammals, looks at evidence from fossils and DNA to examine which mammals are most closely related to whales. First published on Fri, 2
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The Diversity of Countries and Economies across the World
OpenStax College
By the end of this section, you will be able to: Analyze GDP per capita as a measure of the diversity of international standards of living Identify what classifies a […]

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6 Thermoregulation and mammalian fur

A coat of profuse mammalian body hair is commonly called fur. Fur provides insulation, which is a property that one first thinks of as useful for mammals to help retain body heat. Fur is a unique and fundamental feature of mammals, though not all living species possess it.

Question 12


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Babbage: Inspectors' gadgets
New technology used by nuclear weapons inspectors and 3D printing buildings on Earth and in outer space
Author(s): The Economist

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