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Sinterklaas loopt op de daken : Skyline schilderen
skyline.png

Leerlingen schilderen eerst met waterverf een nachtlucht. Daarna teken ze op zwart papier de skyline (verschillende soorten daken). Ze knippen de skyline uit en kleven die op hun schilderwerkje.


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Visual Studies Program at California College of the Arts (CCA)
CCA's Visual Studies Program trains students in the skills necessary to analyze and interpret the images, objects, and architectural structures that surround us. Through a rich curriculum informed by both theory and history, students acquire a critical awareness of how visual culture is entangled in systems of meaning and power. Hear firsthand as CCA students, faculty, and alumni talk about CCA's Visual Studies vibrant and creative community. Learn more about CCA's Visual Studies Program:
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Are Flowers Smelling You Back?w
Animals utilize their sense of smell to explore their surroundings. But
what about plants? When you smell a flower, is it smelling you back? Is
it trying to figure out if your nose would make a good pollinator?
Chemical ecologist Consuelo De Moraes shows us a parasitic vine that
uses smell to find its preferred host—the tomato.  (02:48)

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Usman Riaz and Preston Reed: A young guitarist meets his hero
Usman Riaz is a 21-year-old whiz at the percussive guitar, a style he learned to play by watching his heroes on YouTube. The TED Fellow plays onstage at TEDGlobal 2012 -- followed by a jawdropping solo from the master of percussive guitar, Preston Reed. And watch these two guitarists take on a very spur-of-the-moment improv.Preston Reed’s hands have an otherworldly coordination. The fingers, nails, thumbs, and palms of both left and right dance, pluck, strum, and slap his guitar, which bur
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UK Minister on latest unemployment figures
Dec. 12 - Minister for Employment, Mark Hoban, gives his outlook for the UK jobs market and reaction to the latest figures.
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Excitonics

An exciton is an excitation that mediates the absorption and emission of light, especially in low-cost disordered solar cell and LED materials. In the Center for Excitonics, we seek to supersede traditional electronics with devices that use excitons to mediate the flow of energy. In my presentation, I’ll describe two applications of excitonics in devices: high-brightness quantum dot-based LEDs, and exciton fission in high efficiency solar cells.


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2.3 Effects on terrestrial vegetation

SAQ 13

Why do you think nitrogen is becoming increasingly available to terrestrial ecosystems in many parts of the world)

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8.2 Chromosome scaffolds

Most of the chromosomal DNA chains within the interphase nucleus are believed to be held on a scaffold or backbone structure made from various proteins, with loops of between 20 and 200 kb extruding from attachment sites. This chromosome structure is shown schematically in Figure 40. The scaffold, as well as permitting further compaction, serves to bring the DNA together in organised regions. There are many different protein components of these scaffolds, amongst them DNA topoisomerases.


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Nucleosomal DNA packaging into a 30 nm fibre: the role of histone H1

When chromatin is isolated from the nucleus and examined under the electron microscope, it can be seen as a 30 nm fibre. This fibre is formed through the action of the histone H1 on the nucleosomal DNA in the 10 nm fibre. In contrast to the other histone proteins, H1 does not contain the histone fold motif.

Compaction of the 10 nm fibre to give the 30 nm fibre is achieved by interaction of the H1 protein with both the linker DNA and the histone octamers, as shown in Figure 31
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The histone fold and formation of the nucleosome

We have seen how in the eubacterial chromosome, bending DNA serves to facilitate its compaction. A similar process occurs in eukaryotic cells in that DNA is bent and wrapped around a protein unit. In this case, the core unit is a protein–DNA complex termed a nucleosome. The nucleosome comprises the core histone proteins H2A, H2B, H3 and H4 arranged in a structure known as the core histone octamer, with an associated length of DNA. In order to understand how the nucleosome is a
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2.6 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
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Glossary

Click on the link below to open the unit glossary.

Open glossary now...


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2.4 Summary of Section 2

  1. The water cycle involves the movement of water, in all its forms, over, on and through the rocks near the surface of the Earth in a cycle. This cycle is driven by the Sun's energy and the Earth's gravity. The total volume of water in the cycle is virtually co
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3.5 Blazars

Blazars appear star-like, as do quasars, but were only recognised as a distinct class of object in the 1970s. They are variable on timescales of days or less. All are strong and variable radio sources. There are two subclasses.

BL Lac objects are characterised by spectra in which emission lines are either absent or extremely weak. They lie at relatively low redshifts. At first, they were mistaken for variable stars until their spectra were studied. (Their name derives from BL Lac
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Active galaxies

Figure 10 shows the spectral energy distribution of an active galaxy.

Figure 10
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6.1 Introduction

Reading 5 ends with a call for a move towards a more ‘deliberative democracy’ in which public engagement takes place in parallel with the development of new technologies, so that opportunities are provided for ongoing dialogue and influence between the two. To help to achieve this, the authors argue, ‘… now is the right time to start experi
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4 The GM Nation? debate

The UK's GM Nation? debate took place in the summer of 2003 – a time when both the political mood and scientific innovation had moved on a good deal in the eight years since the first UKNCC. Despite the relatively non-controversial introduction of the first GM products (notably a GM tomato paste and GM cheese) in the shops in the mid-1990s, public concerns grew in subsequent years. One particularly influential event was the arrival in the late 1990s of US and Canadian soya beans in Europe,
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3.5 Consensus conference on radioactive waste

A second UK national consensus conference was held in May 1999 as part of a wide-ranging public engagement process on managing radioactive waste safely. The remit of the citizens' panel (the term was adopted in preference to ‘lay panel’) was as follows:

The Consensus Conference is to focus on the effective and publicly acceptable long-term management of nuclear waste in the UK, both civil and military, concentr
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