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Chemie van de herfstkleuren
1.jpg

Dit thema maakt deel uit van de website chemie is overal, waarin verschijnselen uit het dagelijks leven onder de loep worden genomen en verklaard. 

Over de verkleuring van de bladeren tijdens de herfst heeft de wetenschap nog niet het laatste …


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When Ringling Bros. Retires Its Elephants, This is Where They Live
Amid scrutiny for the handling of their performing elephants, Ringling Bros. and Barnum & Bailey Circus announced in March of this year that they will be removing elephants from their shows by 2018. The retired elephants will be brought to the Ringling Bros. Center for Elephant Conservation in Polk City, Florida. To help ensure the conservation of the Asian elephant, the animals will continue to be bred and studied at the center, with assisted reproduction and research into the diseases that
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18.786 Topics in Algebraic Number Theory (MIT)
This course provides an introduction to algebraic number theory. Topics covered include dedekind domains, unique factorization of prime ideals, number fields, splitting of primes, class group, lattice methods, finiteness of the class number, Dirichlet's units theorem, local fields, ramification, discriminants.

5.4.3 Two key leadership activities

  • Providing feedback: giving evaluative feedback so that it is experienced as helpful rather than destructive.

  • Problem ownership: the importance of accepting responsibility for our own problems, rather than blaming others.


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8.5 Constructing bibliographies

At the end of your assignments you need to include a bibliography or list of references. This is an alphabetical list of all the sources that you have used – each chapter, book and article that you refer to in the main body of your discussion. Bibliographies take a particular form and usually involve listing the:

  • author's name,

  • date of publication,

  • title of the piece, and

  • details of the publisher.


  • Author(s): The Open University

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7 Solutions to the exercises

Section 6 contains solutions to the exercises that appear throughout sections 1-5.

Click the link below to open the solutions (13 pages, 232KB).

Section 6


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Sound - Grade 11
Rory Adams, Free High School Science Texts Project, Mark Horner, Heather Williams


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Learning about Nouns and Verbs
This video explains how nouns and verbs can be the same word.  It contains explanations and examples as well as definitions of both nouns and verbs. It is closed captioned.  (06:59)
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The History of Valentine's Day
This professional video explores the history and legends surrounding Valentine's Day. The presenter explains the legend of St. Valentine. The end of the video consists of impromptu interviews of customers at a greeting card store.  (03:59)
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3.1 Frequency

Frequency refers to how often or how frequently someone should exercise. To improve aerobic fitness, the American College of Sports Medicine (ACSM) recommends an exercise frequency of three days per week of vigorous exercise or five days of moderate exercise for healthy adults (Garber et al., 2011). The terms ‘vigorous’ and ‘moderate’ will be defined in the next section.

A frequency of 3–5 days per week using a combination of moderate and vigorous exercise is also recommended
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Tax tips with Jason Stanfield, CPA
Jason W. Stanfield, PhD, CPA, Krannert lecturer shares some tax tips.
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5th Grade: Dividing With Fractions and Whole Numbers
This is a lesson on dividing fractions with whole numbers.  It is geared towards fifth-grade students. (00:59)

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12.802 Wave Motion in the Ocean and the Atmosphere (MIT)
This course is an introduction to basic ideas of geophysical wave motion in rotating, stratified, and rotating-stratified fluids. Subject begins with general wave concepts of phase and group velocity. It also covers the dynamics and kinematics of gravity waves with a focus on dispersion, energy flux, initial value problems, etc.
Author(s): Rizzoli, Paola

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

11.958 Getting Things Implemented: Strategy, People, Performance, and Leadership (MIT)
An old saying holds that "there are many more good ideas in the world than good ideas implemented." This is a case based introduction to the fundamentals of effective implementation. Developed with the needs and interests of planners—but also with broad potential application—in mind, this course is a fast paced, case driven introduction to developing strategy for organizations and projects, managing operations, recruiting and developing talent, taking calculated risks, measuring resu
Author(s): Briggs, Xavier de Souza

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4.4 Stationary states and tunnelling in one dimension

We will now use the stationary-state approach to analyse the tunnelling of particles of energy E0 through a finite square barrier of width L and height V0 when E0 < V0 (see Figure 21).

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Kultur project
Kultur was a JISC-funded online project, which created a... "working model of a sustainable institutional repository for research output in the visual and applied arts", the Kultur Demonstrator. The website contains a full set of PDF reports on the progress and outcomes of the project, along with details of the staff involved, and links to the original JISC description of the project. This may be an interesting resource for those considering the ways in which academic online repositories and arc
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Perception: Inverted Vision
The peculiar image inversion process that takes place in the normal visual system is examined in this module. The program traces the experiences of an art student who volunteers to wear lenses that invert her visual world, connecting the adaptation process she undergoes with how the visual system functions. Graphic animations reinforce understanding of the mechanism invo
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Introduction -- Hypothesis Testing with Two Samples -- RRC MATH 1020
Lyryx Learning

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Western food ban in Russia leaves bad aftertaste
The owner of a popular Moscow restaurant worries about food prices and shortages following a Russian ban on Western food imports. Mana Rabiee reports. 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 provides coverage around the globe and across topics including business, financial, national, and international news. For
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TALAT Lecture 4400: Introduction to Friction, Explosive and Ultrasonic Welding Processes of Aluminiu
This lecture gives a brief introduction to friction, explosive and ultrasonic welding techniques of aluminium; it describes the possibilities and results of joining aluminium to different metals, e.g. stainless steel. General mechanical engineering background and basic knowledge in aluminium metallurgy is assumed.
Author(s): TALAT,Ulrich Krüger, Schweißtechnische Lehr-und

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