3.1.1 Phosphorus

Phosphorus has a number of indispensable biochemical roles and is an essential element for growth in all organisms, being a component of nucleic acids such as DNA, which hold the code for life. However, phosphorus is a scarce element in the Earth's crust and natural mobilization of phosphorus from rocks is slow. Its compounds are relatively insoluble, there is no reservoir of gaseous phosphorus compounds available in the atmosphere (as there is for carbon and nitrogen), and phosphorus is also
Author(s): The Open University

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How Pay Inequality Affects the Bottom Line
Pay inequality is a persistent problem that is getting more exposure than ever before. Recent Wharton research examines how inequality affects individual workers and entire companies.
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Diagram and template for using a semi-cylinder to calculate area
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2.4 Variable fecundity

The food supply for most polar species depends on several unpredictable factors so successful breeding is far from certain, even if births are tightly synchronized with the seasons. Maintaining pregnancy and feeding the offspring after birth (or hatching in birds) are energetically expensive. The death of the offspring before its maturity represents an irredeemable loss of ‘reproductive investment’ for the parents, particularly the mother, although the earlier in parental nurturing that t
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Episode 156: Virtual Networks with Narayan Annamalai | Microsoft Azure Cloud Cover Show

In this episode Chris Risner and Haishi Bai are joined by Narayan Annamalai, a Program Manager on the Virtual Networks team.  Today Narayan discusses Azure Virtual Networks as well as hybrid connections. VNets allow you to create a secure and isolated trust boundary for your resources within Azure.  This also allows you to seamlessly connect resour
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Author(s): Davis, Samantha

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The Story of Wakefield
A basic skills learning resource booklet with interactive activities designed to introduce the Wakefield Museum.
Author(s): Davis, Samantha,Leeds Metropolitan University

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Evaluation of 'Business Enterprise' Module
This report outlines a process of evaluation for a business enterprise module. This exploratory research investigates the impact of 'contextual' based evaluation of enterprise education curricula
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Evaluation of 'Advanced Database Management' module
This paper focuses on a discussion on the approach taken in analysing evaluation design for a specific faculty module on enterprise education
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Cesar teaches a terrier owner to live "in the now" in order to help her deal with her dog problems. This video is part of a series aired by National Geographic on dog behavior. (03:45)
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3.3 Extending the distance scale

Having reviewed some of the properties of galaxies, we are now in a position to return to the question of how we are to develop further our methods of measuring distance.

The various steps taken in determining larger distances from known smaller ones are often called ‘rungs in the distance ladder’. The process of constructing a rung has been:

  1. Find a measurable quantity associated with a class of objects.

  2. Observe how the measura
    Author(s): The Open University

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COMP1216 - Problem class 8
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Introduction

This course looks at three different uses of genetic testing: pre-natal diagnosis, childhood testing and adult testing. Such tests provide genetic information in the form of a predictive diagnosis, and as such are described as predictive tests. Pre-natal diagnosis uses techniques such as amniocentesis to test fetuses in the womb. For example, it is commonly offered to women over 35 to test for Down's syndrome. Childhood testing involves testing children for genetic diseases that may no
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2.5 Obesity and ageing

So, it seems that a part of the explanation for Ron's obesity, and the health problems that have led him to seek medical advice, may relate to the environment in which he is living, and more specifically the diet that he has chosen. It may also be a diet that is especially effective in activating the reward circuits in Ron's brain. However, Ron is also in his later middle age. A longitudinal study of people of this age in the USA suggests that average body weight increases by 1–2 kg per dec
Author(s): The Open University

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6.1 The intricacies of neuron growth

Particular nerves, such as those sensory nerves that arise from the nasal retina (the side of the retina adjacent to the nose), cross the midline; other sensory nerves, such as those that arise from the temporal retina do not. This pattern is consistent between individuals, to such an extent that a map of the nervous system is good enough to be used to locate a particular nerve pathway in most people. (See Author(s): The Open University

Jerica & Ashleigh
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1.7.1 Carboniferous mires

During the late Carboniferous, mires developed over vast areas of the UK. Much of today's land area was an extensive, low-lying plain bordering a sea to the south (a sea that was soon to be the site of a mountain-building episode). Any mountains that existed lay hundreds of kilometres to the north. Large river systems meandered southwards across these plains.

At that time, the UK lay in tropical latitudes, almost on the Equator (see Author(s): The Open University

Can Annuities Help Grow Your Retirement Nest Egg?
New research from Wharton professor Olivia Mitchell looks at how annuities can help secure enough retirement income when the products are included in pension plan menus.
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