Textbooks represent the animal cell nucleus as a sort of cellular Jabba the Hutt, torpidly enthroned in the center of the cell. In fact nothing could be farther from the truth. The nucleus more closely resembles Luke Skywalker, the hero of Star Wars, in its ability to move about in its cellular universe. Instances of nuclear motility are found throughout biology. Indeed, nuclear migration appea...

rural migration is the process of people moving from rural areas to cities. rural migration to urban is an important issue for all countries. in this study, investigate the causes of rural migration to urban in malayer conty (hamedan province). stutistic population in this study was people who have migrated from their village and data for this study has collected from the 180 migrant households...

When successive stages in the life history of an animal directly overlap, physiological conflicts can arise resulting in carryover effects from one stage to another. The extreme egg-size dimorphism (ESD) of Eudyptes penguins, where the first-laid A-egg is approximately 18-57% smaller than the second-laid B-egg, has interested researchers for decades. Recent studies have linked variation in this...

During development, functional structures must form with the correct three-dimensional geometry composed of the correct cell types. In many cases cell types are specified at locations distant to where they will ultimately reside for normal biological function. Although cell migration is crucial for normal development and morphogenesis of animal body plans and organ systems, abnormal cell migrat...

Neuronal migration disorders are human (or animal) diseases that result from a disruption in the normal movement of neurons from their original birth site to their final destination during early development. As a consequence, the neurons remain somewhere along their migratory route, their location depending on the pathological mechanism and its severity. The neurons form characteristic abnormal...

Textbooks represent the animal cell nucleus as a sort of cellular Jabba the Hutt, torpidly enthroned in the center of the cell. In fact nothing could be farther from the truth. The nucleus more closely resembles Luke Skywalker, the hero of Star Wars, in its ability to move about in its cellular universe. Instances of nuclear motility are found throughout biology. Indeed, nuclear migration appea...

Our knowledge of avian behaviors during the non-breeding period still lags behind that of the breeding season, but the last decade has witnessed a proliferation in research that has yielded significant progress in understanding migration patterns of North American birds. And, although the great majority of migration research has historically been conducted in the eastern half of the continent, ...

The migration of packaging material constituents into food is a product of the interaction between the food and packaging material. This phenomenon is of importance because some migrating substances may be toxicologically carcinogenic and endanger the consumer safety. Polystyrenes are used in many food-contact applications for the packaging of aqueous-based, fatty and dry foods. The correlation...

Newcastle disease affects birds of different breeds and ages (turkeys, quails, guinea fowls, chickens). Given the possibility spreading by other species, including migratory birds, it makes more sense to immunize chickens during their long-distance migration. The main measure prevention remains its competent specific with use live inactivated vaccines, as specialists Khankai branch Khorol Veter...

Similarities in the behavior of diverse animal species that form large groups have motivated attempts to establish general principles governing animal group behavior. It has been difficult, however, to make quantitative measurements of the temporal and spatial behavior of extensive animal groups in the wild, such as bird flocks, fish shoals, and locust swarms. By quantifying the formation proce...