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Regional Specification of Neurosphere Cultures Derived from Subregions of the Embryonic Telencephalon Regional Specification of Neurosphere Cultures Derived from Subregions of the Embryonic Telencephalon M alin P arm ar,1 C harlotta S kogh, And ers Björklund , and K enneth C a m p b ell2 Wallenberg Neuroscience Center, Division of Neurobiology, Lund University, Solvegatan 17, BMC A11, S-221 84 Lu
Dissipation of acoustic waves may be an efficient heating mechanism forthe lower and middle chromosphere of the quiet Sun. The basic idea isthat turbulent motions at the top of the solar convection zone generateacoustic waves which propagate upwards and dissipate in the lower andmiddle chromosphere, transporting energy into the higher layers. Butstill the question remains if this amount of energy
Popular Abstract in Swedish Förbränningsmotorer används på flera platser i samhället där energi behöver göras tillgänglig i form av mekaniskt arbete eller elektrisk energi. Den kanske mest kända tillämpningen är som kraftkälla i en personbil. Förbränningsmotorerna har givetvis ett antal fördelar som bidragit till deras popularitet och omfattande användning - lågt pris, kompakthet, driftsäkerhet ocCurrent combustion engines provide excellent performance for vehicle propulsion and power generation. However, recent demands from society ask for higher efficiencies and lower emissions. These requirements are hard to meet with current technology and call for new solutions. Homogeneous Charge Compression Ignition, HCCI, offers a potential to combine high efficiency with very low emissions. It op
The Euro50 is a proposed 50 m optical and infrared telescope. It will have thousands of control loops to keep the optics aligned under influence of wind, gravity and thermal loads. Cross-disciplinary integrated modeling is used to study the overall performance of the Euro50. A sub-model of the mechanical structure originates from finite element modeling. The optical performance is determined using
In February 2015 the British Parliament adopted the Counter-Terrorism and Security Act 2015 for the purpose of filling gaps in the previous counterterrorism legislations. The temporary restriction on travel measures thus introduced, target the increasing problem with so-called foreign fighters and consist of two elements. The power to seize and retain passports and/or travel documents entrusts a p
Before the coming Durban Review Conference against racism the universality in the Universal Declaration of Human Rights is questioned as a result of the intense conflict between freedom of expression and religious liberty particularly according to the concept of defamations of religions. The conflict is declared to be the opposition between “universal ideal” and “cultural relativism”. In this inve
In carrying out foreign policy in the 21st century, it is indispensable for a global force such as the United States to focus on decisions made by the civil society. Particularly, by implementing foreign policy that balances between hard power and soft power diplomacy, the practices of the new public diplomacy enable nation-states to interact with the public culturally and personally by encouragin
Observationer och modelleringsstudier har visat att den globala markytan har genomgått betydande förändringar under de senaste decennierna, drivet av både naturliga och antropogena faktorer, såsom förändringar i ekosystemens produktivitet, bränder och markanvändning. Markytans förändringar kan potentiellt påverka det lokala och regionala klimatet genom förändringar i processer som sker mellan jordObservation and modelling studies have indicated that the global land surfaces have been undergoing significant changes in the past few decades, driven by both natural and anthropogenic factors, such as changes in ecosystem productivity, fire and land use. Land surface changes can potentially influence local and regional climate through land-atmosphere interactions. Continued greenhouse gas emissi
Although the involvement of the tumor suppressor gene p53 in normal hematopoiesis is uncertain, it can give rise to differentiation signals in leukemic cells. It is not clear, however, whether differentiation merely is a consequence of the ability of p53 to arrest cell proliferation or whether hitherto unknown molecular mechanisms are responsible for the p53-mediated differentiation. To further ex
Migration allows animals to exploit spatially separated and seasonally available resources at a continental to global scale. However, responding to global climatic changes might prove challenging, especially for long-distance intercontinental migrants. During glacial periods, when conditions became too harsh for breeding in the north, avian migrants have been hypothesized to retract their distribu
