The American Journal of Science, Том 200J.D. & E.S. Dana, 1920 |
Результаты поиска по книге
Результаты 1 – 5 из 37
Стр. 2
... curves for a uranium film were compared with the corresponding curves obtained with polonium and ionium , Geiger and Nuttall calculated the ranges of the a - particles from ura- nium to be 2.5 cm . and 2.9 cm . ( at 0 ° C . ) . 4 2 Phil ...
... curves for a uranium film were compared with the corresponding curves obtained with polonium and ionium , Geiger and Nuttall calculated the ranges of the a - particles from ura- nium to be 2.5 cm . and 2.9 cm . ( at 0 ° C . ) . 4 2 Phil ...
Стр. 11
... CURVE I FILM 102 CURVE I FILM_101 1000 TIME IN HOURS fine powder with ethyl alcohol . Films of this material were then prepared in the manner already described and the activity of these films was measured in the a - ray electroscope ...
... CURVE I FILM 102 CURVE I FILM_101 1000 TIME IN HOURS fine powder with ethyl alcohol . Films of this material were then prepared in the manner already described and the activity of these films was measured in the a - ray electroscope ...
Стр. 12
... curve the initial activity could be obtained with accuracy . The calculation of the ratio of the activity of the radium to the activity of the uranium was made by the use of the following equation , where X 1 the required ratio . Em1 ...
... curve the initial activity could be obtained with accuracy . The calculation of the ratio of the activity of the radium to the activity of the uranium was made by the use of the following equation , where X 1 the required ratio . Em1 ...
Стр. 91
... curve in- ward toward the median line of the skull . Antilocapra is also unique in being the only living ruminant with a deciduous and also a branched horn . The skull before me ( RSL , male ) , a relic of an early expedition to Montana ...
... curve in- ward toward the median line of the skull . Antilocapra is also unique in being the only living ruminant with a deciduous and also a branched horn . The skull before me ( RSL , male ) , a relic of an early expedition to Montana ...
Стр. 94
... curve the suture swings across the skull . Thus there is defined a triangular area , bounded in front by the curved suture and on either side by the supra- temporal ridges . The sagittal crest is low and very thin , 4A pmx n mx pmx m 4B ...
... curve the suture swings across the skull . Thus there is defined a triangular area , bounded in front by the curved suture and on either side by the supra- temporal ridges . The sagittal crest is low and very thin , 4A pmx n mx pmx m 4B ...
Содержание
234 | |
243 | |
256 | |
281 | |
293 | |
310 | |
317 | |
361 | |
83 | |
131 | |
141 | |
154 | |
170 | |
173 | |
188 | |
207 | |
225 | |
387 | |
396 | |
399 | |
415 | |
431 | |
446 | |
455 | |
463 | |
474 | |
Другие издания - Просмотреть все
Часто встречающиеся слова и выражения
actinium åkermanite Aletomeryx ant.-post Antilocapra Archæotherium atoms basalt beds calcite calcium canine carbon clavus clavus cones crassum Cretaceous crystals curve cusps Dakota dependent process deposits diameter dike Dinohyus Entelodon feet feldspar flow foramen formation fossa fossil genus Geology glass glenoid cavity heel Holotype hypocone igneous indices intrusives island JOUR jugal Lake Lake Timiskaming lavas Leidy leucite limestone Lipari lower jaw magnetite Marsh melanterite mental tubercles mineral Miocene molars mountains obsidian Oligocene olivine One-fifth nat orbit Oreodon orogenies oxide oxygen P₁ Paleozoic Pecos Pelonax phenocrysts photograph Pirsson planes plate posterior premolar present radium ramus ratio relative rhombohedron rhyolites River rock San Andreas sandstone SCI.-FOURTH SERIES shales side skull slender species specimen structure surface tanks teeth thickness Timiskaming tion tooth transverse U. S. Geol unconformity upper uranium Valley volcano wave lengths width Yeso