作者: 弄污 時間: 2025-3-21 22:03
Evidence for Circannual Rhythms,tury, their existence was not demonstrated before the early 1960’s. The most compelling evidence then was provided by the work of Pengelley and Fisher (1957, 1963) with golden-mantled ground spuirrels (.). Figure 2.1 shows the seasonal changes in body weight and food consumption, as well as the occu作者: 符合你規(guī)定 時間: 2025-3-22 02:43
Properties of Free-Running Circannual Rhythms,und squirrels (.), those of body weight and other parameters in an eastern chipmunk (.) and the cycles of molt in garden warblers (.) and blackcaps (.) have been found to continue for at least five, six, and nine cycles, respectively (Table 2.1). This means that the circannual clock can function ess作者: ensemble 時間: 2025-3-22 05:01
Synchronization of Circannual Rhythms,hapters. Under natural conditions, on the other hand, their period normally matches that of the natural year. This implicates the existence of zeitgebers, i.e., seasonally varying environmental factors that are capable of synchronizing (entraining) circannual rhythms with the yearly cycle of the sea作者: 緯度 時間: 2025-3-22 10:03
Mechanisms of Circannual Organization,lation of overt circannual functions by basic rhythmic processes. The chapter covers a wide and heterogenous field whose content was not easy to structure. The difficulties were further aggravated by the fact that the few investigations that have been devoted to problems of circannual physiology hav作者: MOTTO 時間: 2025-3-22 13:43
Adaptive Significance of Circannual Rhythms,cannual rhythms function only in connection with external seasonal zeitgebers that synchronize them with the natural year and hence the question arises whether these external factors could not do the same job alone. As with circadian rhythms (Enright 1970) there appears to be no convincing answer to作者: MOTTO 時間: 2025-3-22 18:54
Ludger Kolhoff,Peter-Ulrich Wendt,Iris Bothe this question as yet, but two general hypotheses about the biological significance of circannual rhythms merit special consideration. They will be discussed in the following sections (6.1.1 and 6.1.2).作者: 假 時間: 2025-3-23 00:23 作者: 熱情贊揚(yáng) 時間: 2025-3-23 04:19
0720-1842 most conspicuous temporal changes to which organisms are exposed are periodic phenomena generated by the rotation of the earth about its axis, its revolution around the sun, and the more complex movements of the moon in relation to both sun and earth. The first two of these astronomical cycles are 作者: 治愈 時間: 2025-3-23 06:43 作者: Champion 時間: 2025-3-23 10:57 作者: 使害怕 時間: 2025-3-23 15:40
Mechanisms of Circannual Organization,he question of the dependence or independence of various circannual functions within an organism is investigated. The final section (5.3) reports on attempts to identify components of specific circannual rhythms.作者: Androgen 時間: 2025-3-23 20:51
Circannual Rhythms978-3-642-82870-6Series ISSN 0720-1842 作者: Ondines-curse 時間: 2025-3-23 23:18
Grundzüge Gemeinsamer Industriepolitikhapters. Under natural conditions, on the other hand, their period normally matches that of the natural year. This implicates the existence of zeitgebers, i.e., seasonally varying environmental factors that are capable of synchronizing (entraining) circannual rhythms with the yearly cycle of the seasons.作者: Frequency 時間: 2025-3-24 05:34 作者: 云狀 時間: 2025-3-24 08:30
Regionale Integration in der Handelstheoriecally significant factors. This is seen in the concentration of many biological activities at times of the year when they are most likely to be successful. In temperate zones, where conditions of late spring and summer are utilized by most animals for rearing the offspring, reproductive activities a作者: Immobilize 時間: 2025-3-24 12:59
Grundzüge Gemeinsamer Industriepolitiktury, their existence was not demonstrated before the early 1960’s. The most compelling evidence then was provided by the work of Pengelley and Fisher (1957, 1963) with golden-mantled ground spuirrels (.). Figure 2.1 shows the seasonal changes in body weight and food consumption, as well as the occu作者: 內(nèi)疚 時間: 2025-3-24 18:05
Regionale Integration in der Handelstheorieund squirrels (.), those of body weight and other parameters in an eastern chipmunk (.) and the cycles of molt in garden warblers (.) and blackcaps (.) have been found to continue for at least five, six, and nine cycles, respectively (Table 2.1). This means that the circannual clock can function ess作者: bile648 時間: 2025-3-24 18:59
Grundzüge Gemeinsamer Industriepolitikhapters. Under natural conditions, on the other hand, their period normally matches that of the natural year. This implicates the existence of zeitgebers, i.e., seasonally varying environmental factors that are capable of synchronizing (entraining) circannual rhythms with the yearly cycle of the sea作者: dapper 時間: 2025-3-24 23:20 作者: Asseverate 時間: 2025-3-25 05:49
Ludger Kolhoff,Peter-Ulrich Wendt,Iris Bothecannual rhythms function only in connection with external seasonal zeitgebers that synchronize them with the natural year and hence the question arises whether these external factors could not do the same job alone. As with circadian rhythms (Enright 1970) there appears to be no convincing answer to作者: faultfinder 時間: 2025-3-25 07:58 作者: 拱形大橋 時間: 2025-3-25 11:46
https://doi.org/10.1007/978-3-642-82870-6Mammalia; animals; development; environment; invertebrates; mammals; migration; physiology; system; temperatu作者: pulmonary-edema 時間: 2025-3-25 19:14
978-3-642-82872-0Springer-Verlag Berlin Heidelberg 1986作者: arterioles 時間: 2025-3-25 22:38
Regionale Integration in der Handelstheorieer, and the periods of migration or quiescence in autumn or winter (for reviews see, e.g., Lack 1950; Aschoff 1955; Immelmann 1963a, b, 1967, 1971, 1973; Murton and Westwood 1977; Farner and Follett 1979; Farner and Gwinner 1980). In the course of a year these and other activities constitute annual 作者: Statins 時間: 2025-3-26 00:59
Grundzüge Gemeinsamer Industriepolitikarly clearly in the squirrel maintained in 0 °C. In the first year of the experiment this animal entered hibernation in late October, but in the second the onset of hibernation had shifted forward to mid-August and in the third to early April. In other words, the period measured between onsets of hi作者: 玷污 時間: 2025-3-26 06:13 作者: RALES 時間: 2025-3-26 09:54
Introduction,er, and the periods of migration or quiescence in autumn or winter (for reviews see, e.g., Lack 1950; Aschoff 1955; Immelmann 1963a, b, 1967, 1971, 1973; Murton and Westwood 1977; Farner and Follett 1979; Farner and Gwinner 1980). In the course of a year these and other activities constitute annual 作者: 虛構(gòu)的東西 時間: 2025-3-26 14:53
Evidence for Circannual Rhythms,arly clearly in the squirrel maintained in 0 °C. In the first year of the experiment this animal entered hibernation in late October, but in the second the onset of hibernation had shifted forward to mid-August and in the third to early April. In other words, the period measured between onsets of hi作者: 斜 時間: 2025-3-26 20:22
Properties of Free-Running Circannual Rhythms,t and migratory disposition in the chiffchaff (. Gwinner 1971a) and whitethroat (. Gwinner 1983). Particularly interesting from a physiological aspect are cases in which, under one particular constant condition, the annual rhythm of some functions persists in an organism whereas that of others fade 作者: Pituitary-Gland 時間: 2025-3-26 23:00
0720-1842 es. The endogenous nature of rhythmicity was first clearly recognized in the 1930‘s in daily periodicities, the most widely distributed and best investigated cl978-3-642-82872-0978-3-642-82870-6Series ISSN 0720-1842 作者: cluster 時間: 2025-3-27 04:06
Book 1986the environmental cycles and allow, in a variety of different ways, adjustment of biological activities to the cycles of environmental changes. The endogenous nature of rhythmicity was first clearly recognized in the 1930‘s in daily periodicities, the most widely distributed and best investigated cl作者: ACTIN 時間: 2025-3-27 06:27
Jeanine Leaneeart of this seminal book.Stem Cells and Regenerative Medicine: From Molecular Embryology to Tissue Engineering is completely devoted to the basic developmental, cellular and molecular biological aspects of stem cells as well as their clinical applications in tissue engineering and regenerative medi作者: 尖酸一點 時間: 2025-3-27 10:38 作者: 發(fā)誓放棄 時間: 2025-3-27 16:12 作者: Anticoagulants 時間: 2025-3-27 18:56 作者: 孤獨(dú)無助 時間: 2025-3-27 22:07 作者: Germinate 時間: 2025-3-28 02:54
Book 2020nd von Beispielen dargestellt und Tipps zur Stressbew?ltigung gegeben werden. Beleuchtet werden von m?glichen Laufbahnwechseln über die Vereinbarkeit des Berufs mit der Familie und die Einflüsse auf das Privatleben bis hin zu gef?hrlichen oder traumatisierenden Eins?tzen ganz verschiedene Bereiche.
