3.5.5 Biological indicators A great many biological species and individuals occur in normal streams. These often differ markedly in their sensitivity to environmental factors, and likewise the tolerances of various species to different types of pollution vary considerably. The major groups of organisms that have been used as indicators of environmental pollution include bacteria, fungi, protozoa, algae, higher plants, macroinvertebrates and fish. The benthic 'bottom living' macroinvertebrates are particularly suitable a
2.7 Infiltration Entry of precipitation through the soil surface and on downwards, by gravity, is known as infiltration. The rate at which this process can take place is governed by the permeability (a measure of the ease with which water can flow through the subsurface layer) and by the existing degree of saturation of the soil. Infiltration can be impeded by outcropping impermeable rocks or by paved areas, and also by the presence of finegrained soils with a low permeability (such as clay). At certain times
3.4.5 Fretting fatigue An additional possibility was considered. It was known that there was significant movement of the bridge during passage of traffic, because users had noticed it many times when crossing. The joints would thus have been subjected to rotary motion around the pin in order to accommodate such vibrations. Could these have caused fatigue crack growth at the bearing surfaces? Contact between a circular and a flat plate creates so-called Hertzian stresses at the contact zone: compressive at the
An introduction to material culture
This free course, An introduction to material culture, introduces the study of material culture. It asks why we should study things and outlines some basic approaches to studying objects. Dr Rodney Harrison.
First published on Mon, 11 Jan 2016 as Author(s):
2.1 The bankrupt monarchy The immediate cause of the Revolution was that the French monarchy faced imminent bankruptcy. (This was partly because of the enormous sums it had spent assisting the American Revolution between 1778 and 1781 in order to discomfort the traditional enemy, Britain.) Neither nobility nor clergy paid direct tax. Without the consent of the established orders of society to a reorganization of the tax burden so as to restore its finances, the government could no longer function. Successive ministers
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.
Leadership: external context and culture
Through studying this free course, Leadership: external context and culture, you will develop your understanding of the impact of external context and culture on the practice of leadership. The course begins by exploring the nature ‘societal culture’, identifying how culture, at a number of levels, impacts on leadership. We then explore how the external context within which an organisation operates impacts on the factors that leaders need to take account of and consequently the exercise of l
Continuity and learning
This free course, Continuity and learning, has a practical and professional development focus. You will explore interactive dimensions of workplace learning: how people and workplace cultures create formal, informal, planned and unplanned opportunities to learn. You will read about 'biographical learning' research, where adults develop narratives to better understand key points of their learning lives. You will plan and carry out a brief, informal interview with a colleague, and your colleague w
1 Your worries and concerns with charts, graphs and tables Do you sometimes feel that you do not fully understand the way that numbers are presented in course materials, newspaper articles and other published material? What do you consider are your main worries and concerns about your ability to understand and interpret graphs, charts and tables? Spend a few minutes writing these down before you read on. One student has said: I am never quite sure that I The matter of being: knowing bodies and 'mental' health 3.6.5 Using the gradient of a semi-logarithmic graph to calculate doubling time or half-life Knowing the equation First, let's return to the gradient of the 4.3 The changing face of belief The religious life of post-war Britain has become more varied, although Christianity in different forms remains the most influential religion. Yet, the influence of Christianity over British institutions has declined greatly over the last century and a half, although both England and Scotland still retain Established Author(s): 2.5.2 Punctuation Some of the sentences we have looked at are harder to understand than they might be because they are not very well punctuated. Punctuation marks are the ‘stops’ in a sentence that divide it up into parts. They make it easier to follow the meaning of the words. For instance, it is easier to read this sentence of Philip's if we put a comma after ‘wealthy’: With society becoming more wealthy, it was possible for t 2.5.1 Sentences We can see that Philip knows what a sentence is because he writes some perfectly good ones. For example: In many ways going into urban life from the countryside was beneficial to woman of the upperclass. This sentence begins with a capital letter and ends with a full stop. It has a subject (urban life) and a main verb (was). As any sentence is, it is a self-contained ‘unit of meaning’. It m 3.1 Caring relationships Listen to the two audio clips. While you are listening, make notes on the different kinds of caring relationships being described. For each person, note down: Time-lapse movie of a Föhn wave Curious George Helps to Teach about Backyard Bugs Education Quiz Fact Families
This UBVO seminar was given by Grace Lucas (Centre for Maternal and Child Health, London University) in May 2018
allows you to perform several useful calculations without needing to make a graph, and we'll look at one such example in a moment.
Activity 1
Time lapsed photography of a Fohn Wave. A Fohn Wave is a cloud form created by atmospheric standing waves. These waves are created as stable air flows over a mountain range, and can either form above or in the lee of the range. As an air mass travels through the wave, it undergoes repeated uplift and descent. This video has no sound. Run time 01:38.
The children head to the back yard in search of bugs. They turn over rocks and find a centipede, slug, and pill bug. By looking at the critters, they learn how they live and what they do.
Think you know what is going on in schools across the country? NCES conducts surveys with schools, organizations and individuals all over the United States. After collecting the information we publish the results. Data collections are done by mail, phone, and via the Web. The questions below come from many NCES surveys. Read the questions, select your answer, and click on the "Evaluate Answers" button at the end to see your score! To start over, select the "Choose Again" button (at the end). The
Students learn to write fact family problems. Fact families all use the same number. Using a whole, part, part mat, students use cube trains to write two different addition problems using the same numbers- 2, 8 and 10 (2+8=10, 8+2=10). For the subtraction problems, students use the same cube trains but start with the whole (10) and then break it down into the two parts (2, 8). Write the subtraction sentences with the same numbers- 2, 8 and 10 (10-8=2, 10-2=8).
