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

5.2 Cryogenic liquids and ionising radiation safety

5.2.1 Cryogenic liquids

There are a number of hazards associated with cryogenic liquids, the main one being that when accidentally released the liquid expands hugely to form a gas (600 times in the case of nitrogen). The formation of such a large volume of gas can lead to asphyxiation in confined areas.

The other main hazard is cold burns (frostbite).

    Author(s): The Open University

    License information
    Related content

    Copyright © 2016 The Open University

4.4 Summary

This section described how computers can be used in geographical applications (and in doing so it discussed maps and showed how modern maps are composed of layers of different data).

It discussed the GPS to demonstrate how computers can communicate in order to solve a problem, such as navigation.

It also showed how the geographical data that supports both map-making and the GPS navigation system can be presented in different forms such as a map, a list of directions, a moving grap
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

2 Functions

In Section 2 we give the general definition of a function, and illustrate how functions can be used to describe a variety of mathematical concepts, such as transformations of the plane. We discuss the idea of composing two functions, and the idea of forming the inverse of a function.

Click the link below to open Section 2 (16 pages, 366KB).

Sectio
Author(s): The Open University

Communication towers kill about 6.8 million birds every year
Every year more than 6 million birds die as they migrate from the United States and Canada to Central and South America, according to a new USC study published April 25 in journal PLoS ONE. "This is a tragedy that does not have to be," said lead author, Travis Longcore, an associate professor in the USC Spatial Sciences Institute in the USC Dornsife Collage of Letters, Arts and Sciences. The birds are killed by the 84,000 communication towers that dot North America and can rise nearly 2,000 fe
Author(s): No creator set

License information
Related content

3.6.1 The MAP kinase pathway

The MAP kinase pathway is so called because the last component of the pathway was originally identified as a kinase activity in EGF-stimulated cells – hence the name ‘mitogen-activated protein kinase’ (MAP kinase), as it stimulates cell growth and proliferation.

  • What is the mechanism of activation of the EGF receptor?

  • Author(s): The Open University

    License information
    Related content

    Copyright © 2016 The Open University

3.3.3 Obligations to trees?

Citizenship is generally held to be based on a contractual view, where rights and obligations are balanced. In other words, you get various rights in return for your commitment to live by your society's rules and expectations. Political philosopher Andrew Dobson suggests that ecological citizenship is based in a non-reciprocal sense of justice or compassion. The discussion of our relationships with past and future generations in Section 5.2 establishes that our obligations to future generatio
Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

Keep on learning

Study another free course

There are more than 800 courses on OpenLearn for you to c
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Duke Medicine Profiles: Hemang K. Shah, MD
Learn more about Hemang K. Shah, MD, a neurologist at the Kernodle Clinic in Burlington, NC. Dr. Shah sees patients with general neurological issues such as concussion, seizure, syncope, sleep problems, neuropathy, headache, dementia, Parkinson's disease, tremors, multiple sclerosis, and neurological complications of systemic disease. http://www.dukemedicine.org/find-doctors-physicians/hemang-k-shah-md
Author(s): No creator set

License information
Related content

Biden’s conversation with chancellor calls for bipartisanship, optimism
Former Vice President Joe Biden’s message to a packed Langford Auditorium on Tuesday revolved around two themes: a call for bipartisanship and a plea for Americans to remember who they are.
Author(s): Heidi Hall

License information
Related content

Rights not set

Virtual Maths, Cylinder - Calculating Volume and Height
Interactive exercise demonstrating how to calculate the volume and height of a cylinder (includes links to other useful resources)
Author(s): Leeds Metropolitan University

License information
Related content

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

2.5 The power zero

Now, what happens if you divide a number by itself? You should get the answer 1. For example

so 100 must equal 1. This must be true for any number (except for 0, because there
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

HST.508 Genomics and Computational Biology (MIT)
This course will assess the relationships among sequence, structure, and function in complex biological networks as well as progress in realistic modeling of quantitative, comprehensive, functional genomics analyses. Exercises will include algorithmic, statistical, database, and simulation approaches and practical applications to medicine, biotechnology, drug discovery, and genetic engineering. Future opportunities and current limitations will be critically addressed. In addition to the regular
Author(s): Church, George

License information
Related content

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

Mabel Holmes' Diary, 1935-1939, part 1
Mabel Holmes, a longtime Topeka resident, kept a daily diary from January 1, 1935-December 31, 1939. During this time, storms resulting from the severe drought conditions blanketed the state in dust so thick that it could be pitch black in the middle of the day; Kansans were coping with an economic depression even worse than our current one; the threat of a second World War in Europe was looming. Against this backdrop, Mabel talks about the news, weather, shopping, outings with her sister, Elma
Author(s): No creator set

License information
Related content

In Conversation with Dr Kate Fletcher - RMIT Guest Lectures
RMIT Fashion and Textiles invites you to a special industry forum that engages local experts in an open dialogue with Dr. Kate Fletcher on sustainability and the future of fashion Joining Kate Fletcher on the panel were: Dr Kevin Murray, Co-ordinator of Sangam, the Australia India Design Platform Janelle Magee, Fashion School Training Coordinator for the Social Studio Miriam Borcherdt, designer Dr Kate Fletcher (Reader in Sustainable Fashion at the Centre for Sustainable Fashion, London Coll
Author(s): No creator set

License information
Related content

Forensic science and fingerprints
This free course, Forensic science and fingerprints, covers how science can make fingerprints easier to study, how they are used in court and some of the questions about the extent to which fingerprint identification is sound and scientific. Students will learn the principles used in classifying and matching fingerprints (often called marks). Author(s): Creator not set

License information
Related content

Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

22.101 Applied Nuclear Physics (MIT)
The topics covered under this course include elements of nuclear physics for engineering students, basic properties of the nucleus and nuclear radiations, quantum mechanical calculations of deuteron bound-state wave function and energy, n-p scattering cross-section, transition probability per unit time and barrier transmission probability. Also explored are binding energy and nuclear stability, interactions of charged particles, neutrons, and gamma rays with matter, radioactive decays, energetic
Author(s): Chen, Sow-Hsin

License information
Related content

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

LGO Ambassador Day November 3, 2014
The Leaders for Global Operations Ambassador Day, November 3, 2014, is a great opportunity for candidates to see what life is like as an LGO. LGO '16s Ana Garcia and David Semko (Ambassador Day co-chairs) explain what Ambassador Day is and why it is the best way to confirm your plans to apply to the LGO Class of 2017.
Author(s): No creator set

License information
Related content

Determination of vertical fluxes of sulfur dioxide and dimethyl sulfide in the remote marine atmosph
Vertical fluxes of dimethyl sulfide (DMS) and sulfur dioxide (SO2) were determined by eddy correlation and an isotopic dilution atmospheric pressure ionization mass spectrometer (APIMS) on an aircraft platform. The sampling frequency of the isotopic dilution APIMS ranged from 1 Hz to 25 Hz for real-time measurements. Measurements were made near the surface in the marine boundary layer to over 6 km in the free troposphere. The APIMS demonstrated an average sensitivity of 80 cps/pptv for DMS and S
Author(s): Mitchell, Glenn M.

License information
Related content

Rights not set

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