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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 15531 result(s) returned

2.1 Chemical periodicity

The chemistry of the elements is immensely varied. But amidst that variety there are patterns, and the best known and most useful is chemical periodicity: if the elements are laid out in order of atomic number, similar elements occur at regular intervals.

The discovery of chemical periodicity is particularly associated with the nineteenth-century Russian chemist Dmitri Ivanovich Mendeléev (Figure 16). The periodicity is represented graphically by Periodic Tables. Author(s): The Open University

3.3 Quasars

One of the most unexpected turns in the history of astronomy was the discovery of quasars. When first recognised, in 1963, quasars appeared at radio and optical wavelengths as faint, point-like objects with unusual optical emission spectra. The name comes from their alternative designations of 'quasi-stellar radio source' (QSR) or 'quasi-stellar object' (QSO), meaning that they resemble stars in their point-like appearance. Their spectra, however, are quite unlike those of stars. The e
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

2.2 What is natural?

Many critics of GM feel that the techniques reflect an unwelcome form of 'tampering with nature'. This is a particular concern of some consumers with respect to food. Such a view is sometimes scornfully interpreted as an expression of what is called the 'naturalistic fallacy' - a belief that equates morality with naturalness, seeing what is natural as 'right'. But concerns about GM foods may reflect a more reasoned and defensible position. It might be argued that consumers are not demanding a
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Conclusion

This free course provided an introduction to studying Computing & ICT. 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. 


Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Groundhog Day-Punxsutawney Phil
Meet Punxsutawney Phil and his handlers Ben and John. This video gives good facts about Phil's hibernation and eating habits. He likes fruits, almonds, oat bars, etc. This would be a good video to show on Groundhog Day. Some students may not have background knowledge about groundhogs and this video has great photographs. (01:40)
Author(s): No creator set

License information
Related content

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.


Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

Politics in 60 seconds. Utopia
Dr Lucy Sargisson defines a polical concept in 60 seconds for those with a spare minute to learn something new. This videocast focuses on Utopia as a political concept. Warning: video does contain bloopers and out takes. May 2010 Suitable for Undergraduate study and Community education Dr Lucy Sargisson, School of Politics and International Relations Dr Lucy Sargisson is an Associate Professor of Politics at the University of Nottingham. She is an active member of the profession, serving on
Author(s): Sargisson L. M. Dr

License information
Related content

Except for third party materials (materials owned by someone other than The University of Nottingham) and where otherwise indicated, the copyright in the content provided in this resource is owned by

Embedded Liberalism is Dead, Long Live Embedded Liberalism: National Welfare Concerns and Internatio
Leonard Seabrooke looks at how the subprime crisis and resulting international credit crunch demonstrates how uniquely national welfare and financial systems can blend into broader world economy structures, in different ways providing both sources of stability and sources of instability for global finance.
Author(s): No creator set

License information
Related content

The DPS protein compacts the eubacterial chromosome during stress

When an E. coli cell enters into stationary phase, transcription and cell division cease completely. In such cells, the normal chromatin components, such as those described above, are replaced by a negatively charged protein called DPS. The interaction between DPS and DNA appears to be a specialised bacterial adaptation to survive starvation. In normal conditions of growth, the DNA within the bacterial cell is distributed evenly throughout the entire cytoplasm. In stationary cells, how
Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

Introduction

This unit begins by studying evidence leading to our basic hypothesis that active galactic nuclei (AGN) are accreting, supermassive black holes. It also covers some physics of radiation which you will need to be able to interpret the observed emission of AGN, and includes an examination of AGN.

You will be studying a young subject and there are fundamental issues which are still being vigorously debated by the experts and are subject to current research activity. Consequently, it is not
Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

5 5 Additional learning resources

Video resource

If you enjoyed the theme of the videos in this unit watch the video below to find out more about the OU course DD208 Welfare, crime and society.

Get FREE mobile app for your school, college, hobby class or coaching class

Video link (see supported sites below). Please use the original link, not the shortcut, e.g. www.youtube.com/watch?v=abcde

Author(s): gauravmundra

License information
Related content

Rights not set

7.5 Emission from spiralling electrons: synchrotron radiation

In the very first reading (Activity 1) we encountered the term ‘non-thermal’ describing the spectrum of light emitted from AGN. In this subsection we will learn more about the most important type of non-thermal radiation: synchrotron emission.

When a charged particle moves in the presence of a magnetic field it experiences a Lorentz force, which produces an acceleration whose direction is perpendicular to both the magnetic field line and the velocity of the particle,
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

2.3 What's so difficult?

Morgan's discussion helps us to think about how we can develop research, policies and interventions around ‘family’ when the key term is so problematic. But we also need to explore further just what is so difficult about this endeavour. There are also some clues to this in Morgan's discussion, in which he points out that:

  • there is a close linkage between everyday and academic language of family

  • there is a whole variety of a
    Author(s): The Open University

    License information
    Related content

    Copyright © 2013 The Open University

Learning outcomes

By the end of this series of units you should:

  • have a broader understanding of contemporary Scottish society;

  • have a broader understanding of Scottish culture and identity;

  • have an understanding of the various frameworks and standards of professional recognition in Scotland;

  • be aware of the opportunities for further supported study in your chosen area.


Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

Cruz in 2016 U.S. presidential race
Republican Texas Senator Ted Cruz confirms plans to run for president in the 2016 election. Paul Chapman 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 over 160 years, Reuters has maintain
Author(s): No creator set

License information
Related content

1.8 Geological fieldwork

Although much can be learned from samples of rocks in the laboratory or at home, the ‘natural habitat’ of rocks is outdoors. Here the distribution and layout of different rocks is visible wherever rocks are exposed in places such as stream beds, cliffs, rocky shorelines, quarries, or road cuttings. The exposed rocks can be studied in just the same detail as individual laboratory samples, and geological fieldwork allows the size and extent of each rock unit to be seen and the relationships
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Du POS fin au PLU patrimonial (audio)

Intervention de Dominique-Pierre Masson, Inspecteur général honoraire des patrimoines, dans la cadre du comité technique du programme de recherche ANR PLU PATRIMONIAL.


Author(s): No creator set

License information
Related content

Mistress Serendipity's Library

Authors: 
Alex d'Angelo