The Relationship of Fat Deposition to Zugunruhe and Migration

The Condor ◽  
1963 ◽  
Vol 65 (3) ◽  
pp. 200-223 ◽  
Author(s):  
James R. King ◽  
Donald S. Farner
1993 ◽  
Vol 104 (3) ◽  
pp. 883-898 ◽  
Author(s):  
C. Thompson-Coffe ◽  
D. Zickler

The organization of actin during meiosis and sporulation in the ascus of the filamentous ascomycete Sordaria macrospora was determined by immunofluorescence without removal of the cell wall. Actin is present as a dense cortical network of microfilaments (MF) and plaques, a perinuclear shell of actin in prophase I of meiosis, and a complex array of MF involved in alignment of prespore nuclei and closure of spore cell membranes. The relationship of actin to the previously examined microtubule system of the ascus was determined by double-label immunofluorescence. The cytoskeletal inhibitors nocodazole, cytochalasin D and 2,3-butanedione monoxime were used to examine the roles of actin and myosin in ascus development. Microfilament and microtubule arrays are interdependant; disruption of one network results in abnormalities in the other. Both microfilaments and actin-myosin interaction are required for separation and migration of duplicated spindle pole bodies, septation and sporulation


Author(s):  
Paul Jones ◽  
Michał Krzyżanowski

‘Identity, Belonging and Migration: Beyond Constructing ‘Others’’, written by Paul Jones and Michael Krzyanowksi, addresses similar themes to the chapter that comes before it by seeking to discourage the uncritical application of the concept of identity, which the authors argue is not always helpful when assessing the relationship of migrants to collectives.


Author(s):  
Mona Chung ◽  
Bruno Mascitelli

This chapter examines Chinese migration and investment into Europe and explores models of migration and investment by identifying the gap between the two. The chapter highlights the major characteristics of Chinese investment and migration into Europe by identifying and separating the investment from Chinese state-owned enterprises (SOEs) and that of private individuals. This triangulation provides scholars and policy makers with a unique scenario. The migration and investment literature has been conducted as two separate and parallel topics. A small number of studies investigate the relationship of the two as one inter-connected relationship. There is even less focus on Chinese migration and investment due to the fact that over the past decade it has been a fast-moving phenomenon because of the speed of Chinese economic development. In addition, China's different political and economic system and its unique state structure adds another layer of complexity for scholars.


1965 ◽  
Vol 5 (42) ◽  
pp. 843-847 ◽  
Author(s):  
Anthony J. Gow ◽  
Robert Rowland

AbstractRecent measurements of snow accumulation on undulating surfaces around “Byrd station”, Antarctica indicate that the undulations are tending to be filled in. These results are discussed in the light of current knowledge of the origin and migration of such features.


1982 ◽  
Vol 16 (1) ◽  
pp. 4-26 ◽  
Author(s):  
Thomas K. Morrison

It has often been suggested that U.S. foreign economic policies, including the areas of aid, trade and investment, could be utilized to influence migration pressures in major sending countries. This study explores the feasibility of this proposition by examining the linkages between these U.S. economic instruments and migration “push” factors. These linkages are shown to be indirect, are often quite complex, and the final impact on migration, except perhaps in the long run, is probably small in most cases.


Author(s):  
Лаура Альбердовна Нагоева

В рамках данной статьи рассматриваются западнокавказские письменные артефакты: проблемный аспект их изучения, основные тенденции предыдущих исследований, выдвигается гипотеза родства данных артефактов с протописьменными системами культур Восточной Европы и Ближнего Востока. Изучение данных культурных элементов в свете новых археологических данных позволяет рассматривать их как осколки неолитической знаковой системы. Наряду с цивилизационным скачком, произошедшим в неолите (земледелие и сельское хозяйство, крупные поселения и новый общественный уклад, значительно изменивший характер социально-экономических отношений), произошло переосмысление способов передачи и фиксации информации, тем самым образуя фундамент для возникновения протописьменных систем, распространившихся посредством культурной экспансии и миграций на большие территории, в том числе и Западный Кавказ. Также отмечается, что графическая основа кавказских памятников выходит за пределы кавказско-месопотамско-анатолийского ареала, подтверждением чего служит так называемое винчанское письмо. Делается вывод о том, что знаковый фундамент, сформировавшийся в дунайском энеолите, способствовал образованию первых цивилизаций в исследуемом регионе. This paper deals with the Western Caucasus written artifacts: the problematic aspect of their study, the main trends of previous studies, the hypothesis of the relationship of these artifacts with the oldest writing systems of cultures of Eastern Europe and the Middle East. The study of these cultural elements in the light of new archaeological data leads to the conclusion that they can be considered as fragments of the Neolithic sign system, in particular their commonality with the so-called Danube script. Along with the civilizational leap which occurred in the Neolithic (land husbandry and agriculture, large settlements and a new social structure that changed significantly the nature of socio-economic relations), a rethinking of the methods of transmitting and fixing information took place. Thus, the foundation for the emergence of writing systems that spread through cultural expansion and migration to large territories, including the Western Caucasus, was formed. The author also notes that the graphic basis of Caucasus monuments goes beyond the Caucasus-Mesopotamian-Anatolian range, as confirmed by the so-called Vinca script. It is inferred that the glyph foundation formed in the Danube Eneolithic contributed to the formation of the first civilizations in the region under study.


1965 ◽  
Vol 5 (42) ◽  
pp. 843-847 ◽  
Author(s):  
Anthony J. Gow ◽  
Robert Rowland

AbstractRecent measurements of snow accumulation on undulating surfaces around “Byrd station”, Antarctica indicate that the undulations are tending to be filled in. These results are discussed in the light of current knowledge of the origin and migration of such features.


2019 ◽  
Vol 16 (3) ◽  
pp. 555-563
Author(s):  
Magdalene Kiewhuo ◽  
Rollen Yanthan ◽  
Milepo Vese ◽  
Mary Swu ◽  
Medonguno Kiso ◽  
...  

Northern India is one of the oldest geophysical regions of human evolution and migration in the world. Genetic and anthropological studies have shown that the peopling the subcontinent is characterized by a complex history, contributed from different ancestral populations. Genetic level studies of polymorphisms always associated with health and diseases of population becoming the need of hours. The present study was aimed to explore the relationship of ABO blood groups association of populations and to assess the prevalence of blood groups in different categories of Northern India and to compare our results with other studies conducted in India. Blood samples from 155 unrelated individuals was collected from Naga tribal settlements Blood groups of individuals were evaluated with the presence of antigen using monoclonal antibody by a standard blood typing are protocol, Gene frequencies was calculated by Hardy-Weinberg method. The blood group O 67 (43.23%) was the commonest group prevalent in donors followed by group B 45 (29.03%), A 33(21.29%) and AB 10 (6.45%). The Rh negative was not observed in female donors, whereas in male it was found to be 1.3%.Data among tribal suggest their common origin as well as a drift from an original population due to the possible founder effect among tribal Naga Ten Tribal


2018 ◽  
Vol 10 (3) ◽  
pp. 569-577 ◽  
Author(s):  
Nekeisha Spencer ◽  
Mikhail-Ann Urquhart

Abstract This study estimates the impact of hurricanes on migration from 30 Central American and Caribbean countries to the United States from 1989 to 2005. In contrast to previous studies, hurricane destruction indices are employed to study the relationship of hurricanes and migration. These indices measure geographical destruction, which gives a more comprehensive and accurate view of the damage and impact that hurricanes have on the movement of people to international destinations. Controlling for the host country’s migrant stock and the home country’s income, country fixed-effects estimation shows that hurricanes have a positive impact on the ratio of the number of migrants to the home country’s population. On average, hurricanes increase migration by roughly 6%, but the impact is greater for more damaging storms. Estimating the geographical effects reveals that the size of this impact varies across countries. The most damaging storms are related to an increase up to 540% in the ratio of migrants to the home country’s population.


Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.


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