Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 9534 result(s) returned

h-BN inclusion in a β-Si3N4 grain
The micrograph shows h-BN inclusion (precipitate) in a β-Si3N4 grain (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and react with Si3N4 to form BN. Such
Author(s): DoITPoMS, University of Cambridge,Dr K M Knowles,

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Delamination cracks in h-BN particles.
h-BN particles were subjected to compressive stress in the (0001) planes (within a silicon nitride particulate-reinforced silicon carbide composite). The occurrence of BN inclusions results from the introduction of colloidal BN into the hot isostatic pressing process. They are formed from B2O3 present as a thin surface film on the BN particles in the barrier layer. B2O3 will be molten during the pressing process and will diffuse rapidly into the powder compact and react with Si3N4 to form BN. Su
Author(s): DoITPoMS, University of Cambridge,Dr K M Knowles,

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2.1 What is energy?

'Energy is Eternal Delight'

William Blake, 1757–1827 (1994)

What do we mean by 'energy'? What does the concept of 'sustainability' entail? And what, for that matter, do we mean by the 'future' in this context?

Author(s): The Open University

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1 History of health and safety

The discipline of health and safety is relatively modern, only developing in the last century. However, throughout the ages people have voiced their concerns about people being exposed to harmful substances. Hippocrates mentions in the 4th century BC that lead miners and workers tended to suffer from diseases. The phrase ‘mad as a hatter’ was coined because mercury used in the hat industry caused mental illness. In 1775 Pott reported that chimney s
Author(s): The Open University

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Al 88, Si 12 (wt%), eutectic alloy
This alloy is of the eutectic composition. From the melt a eutectic is formed between aluminium solid solution and virtually pure silicon. Slow solidification produces a very coarse microstructure. The eutectic comprises large plates of silicon in the aluminium matrix. This microstructure displays poor ductility due to the brittleness of large silicon plates. The microstructure is normally refined through either rapid solidification, which lets the silicon phase assume a fibrous form, or by a pr
Author(s): DoITPoMS, University of Cambridge,Prof T W Clyne,

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1.4 The economics of maintaining a heritage site

The National Trust operates within a complex web of funding. This comes from annual membership fees and from visitor receipts at individual sites. Each National Trust property is responsible for raising the income necessary to fund its own conservation activities and further development (although a large minority of sites cannot cover their costs). Properties raise this income through visitors charges and from catering, shop sales, etc. Failure to raise sufficient income can lead to job losse
Author(s): The Open University

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2.1 Networked devices you use every day

The next activity aims to get you thinking a bit more about how IT systems form part of your own life and to make you more aware of how you are living in a networked world. IT systems are embedded in many everyday experiences and we have become so used to this that we hardly notice that we are using them.

Author(s): The Open University

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4 models and methodologies offered

One of the more visible parts of the service many consultants offer is the model or models on which they base their work. When consulting, activity always needs to be related to the local situation. The consultant will normally start by trying to understand the client perspective, but then seek to expand that perspective, using theory and experience from elsewhere.

So you will probably need information on the theoretical models used by any consultants you are considering. In addition to
Author(s): The Open University

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2.1 ‘Every painter paints himself’?

Art history methods of biography or ‘Life’ writing attempt to link an artist to his art. Why do we need to know about an artist's life to know about his art in the first place? Why might Helen Langdon want to explain Caravaggio the man and not just his world or his art? Behind this questions lies a problem central to art history. Do we need to know about artists to know about their art?

Martin Kemp gives the link between an artist and his art a historical comple
Author(s): The Open University

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5 How might dialogue move on from GM Nation?

There is a widespread optimism that ‘lessons have been learnt from the GM Nation? Debate’ – indeed the government's response to the exercise was couched in just those terms (DEFRA, 2004). One concern has been touched on already – many felt that the debate took place too late, on a rushed timetable, at a time in the controversy when the debate had become highly polarised and divisive ‘pro’ or ‘anti’ stances already embedded. This late in the day, questions for public discussion
Author(s): The Open University

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Public Rights of Way in Bournemouth
A list and photographic record of Bournemouth's public rights of way
Author(s): Chris Downer

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Rights not set

Learning outcomes

After studying this course, you should be able to:

  • review some of the recent debates about the place of geography in the school curriculum

  • consider the different aims of geographical education

  • demonstrate an engagement with some links for further study.


Author(s): The Open University

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1.1 Themes shaping practice

There are five main themes running through this unit. These themes, though not uncontested or fixed, are based on core principles and ideas that shape practice in the field of social care and social work in the statutory, independent and voluntary sectors. They are:

  1. Partnership

  2. Empowerment and anti-oppressive practice

  3. Rights

  4. Accountability

  5. Valuing diversity.

Below you
Author(s): The Open University

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TALAT Lecture 2703: Construction and Dynamic Testing of Aluminium Nodes
This lecture demonstrates, how optimum design and fabrication of extruded space frame members joined by welding can lead to significant weight savings, high service life and economy under fatigue loading conditions. Basic knowledge of structural engineering, extrusion design, welding and fatigue; and some familiarity with TALAT lectures no. 1302, 1501, 2200, 2302 and 2400 is assumed.
Author(s): TALAT,Åke Oma, Hydro Aluminium Structures, Karmoy

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Introduction

Even the simplest organisms can detect and respond to events in their ever-changing environment. Similarly, within a multicellular organism, cells are surrounded by an extracellular environment from which signals are received and responded to. Extracellular events are decoded and transmitted to relevant parts of individual cells by way of a series of activation/deactivation steps involving many intracellular molecules. This relay of information along molecular pathways is called signal tra
Author(s): The Open University

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Neurofibromatosis
By: mdanderson Neurofibromatosis describes a series of disorders involving tumors developing around the nerves. While these tumors are often benign, their presence in small spaces can cause serious side effects and health risks as they grow. In this episode, Dr. John Slopis describes MD Anderson's comprehensive neurofibromatosis program and explains how the research being done there is providing information about cancer.
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1.3.2 Recurrent themes

When the accounts of people who have described a near-death experience are looked at side by side it is possible to identify some common features. This isn’t to say that all of these features are present in every account, but that amidst variations there are certainly recurrent themes. The following list is compiled from a variety of studies, including the important study undertaken by Sabom (1982), himself initially sceptical.


Author(s): The Open University

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Literary Festival 2016: Progress in Troubled Times: learning from "The Age of Genius" [Audio]
Speaker(s): Professor AC Grayling | What happened to the European mind between 1605, when an audience watching Macbeth at the Globe might believe that regicide was such an aberration of the natural order that ghosts could burst from the ground, and 1649, when a large crowd, perhaps including some who had seen Macbeth forty-four years earlier, could stand and watch the execution of a king? Or consider the difference between a magus casting a star chart and the day in 1639, when Jonathan Horrock a
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3.3.1 Phosphatidylinositol 3-kinase (PI 3-kinase)

Members of this family of lipid kinases usually have two subunits: one is a catalytic subunit with a lipid kinase domain and the other is a regulatory subunit, which contains two SH2 domains and a SH3 domain (p 85 PI 3-kinase in Figure 13).

  • Author(s): The Open University

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1.5.1 Definition by exclusion

A person is ‘dyslexic’ if no alternative explanation can be offered for their reading and writing difficulties.

In the UK, interest in children who showed a specific lack of ability in literacy grew as all children became entitled to a basic education. For the first time there was an expectation that all adults should be literate. Initially, it was proposed that specific difficulties in learn
Author(s): The Open University

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