From these observations he has concluded that the speed of light was faster billions of years ago than it is today (1/2 page). Paul Davies has analysed light from some of the most distant stellar objects in the sky. Relative values: shedding light on Einstein's theories The editorialist is Satyen Deb, in his role as Director of the Basic Sciences Center. The Second Quarter, 1999 issue, titled '' Shedding Light on the Matter,'' focuses on the PV-related research activities of NREL's Basic Sciences Center. NREL PV Working With Industry is a quarterly newsletter devoted to the research, development, and deployment performed by NREL staff in concert with their industry and university partners. The editorialist is Satyen Deb, in his role as Director of the Basic Sciences Center PV working with industry, Second Quarter, 1999: Shedding light on the matter We also discuss how such light induced activity can help shed light on the inner workings of the central nervous system respiratory circuitry that controls diaphragmatic function. In this article we briefly review the history of various attempts to restore breathing after C2 hemisection, and focus on our recent work using the activation of light sensitive channels to restore respiratory function after experimental spinal cord injury. With the emergence of new and powerful tools from molecular neuroscience, new therapeutically relevant alternatives to these approaches have become available, including expression of light sensitive proteins called channelrhodopsins. Because of this, much work has been done in studying ways to restore respiratory function following SCI - including pharmacological and regeneration strategies. Shedding light on restoring respiratory function after spinal cord injuryĭirectory of Open Access Journals (Sweden)įull Text Available Loss of respiratory function is one of the leading causes of death following spinal cord injury. X-ray flashes (XRFs) and X-ray rich gamma-ray bursts (XRGRBs) share many observational characteristics with long duration ( is the Lorentz factor of the outflow near the edge of the jet from which most of the ![]() The findings suggest the presence of a circadian oscillator for rhythmic disc shedding within the amphibian eyeĪfterglow Observations Shed New Light on the Nature of X-ray FlashesĮnergy Technology Data Exchange (ETDEWEB) The action of anisomycin was investigated by autoradiographic examination of the pattern of 3 H-leucine uptake and protein synthesis by the explant. ![]() The addition of the protein synthesis inhibitor, anisomycin, to this preparation suppressed the shedding rhythm. Explants maintained in culture medium containing deuterium oxide (a compound known to perturb circadian oscillators) were found to shed with a longer interval between peaks. Modification of the HCO 3 - ion concentration in the medium was found to raise the amplitude of the peak of endogenous disc shedding. A clear rhythmicity of disc shedding was observed, with pronounced peaks at the times light onset occurred in the original entrainment cycle. At various times during a 3-day period of constant darkness, eyes were explanted and placed into culture medium, then processed for light and electron microscopy. To further examine the endogenous rhythm of disc shedding and phagocytosis observed in several species, adult Xenopus were entrained to a 12 hr light/12 hr dark cycle and then placed in constant darkness. International Nuclear Information System (INIS) ![]() Circadian disc shedding in Xenopus retina in vitro
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |