Some aspects of the respiration of six species of fish from Uganda

The fish were collected from gillnets or seine nets and usually taken alive to the biological laboratory at Makerere College. Here blood samples were taken which, if not used immediately, were stored below 0 0 C. In some cases the fish were bled when they were caught and the blood stored in a vacuum flask containing an ice-salt . mixture. The blood was collected from an afferent vessel in the gill arch or from the caudal artery. In the case of Clarias and Protopterus, the blood was taken from the ventricle of the heart. Specimen tubes of 1 or 5 mi. capacity were cleansed and,before sterilization by dry heat, suitable quantities of Wintrobe's solution (an anticoagulant containing oxalate)were added.The blood from the fish flowed directly into these tubes and, when the required quantity had been collected, the tube was stoppered, shaken vigorously to dissolve the oxalate crystals and stored. Any tubes in which the blood had clotted were discarded

Magnetoluminescence

Pulsar Wind Nebulae, Blazars, Gamma Ray Bursts and Magnetars all contain regions where the electromagnetic energy density greatly exceeds the plasma energy density. These sources exhibit dramatic flaring activity where the electromagnetic energy distributed over large volumes, appears to be converted efficiently into high energy particles and gamma-rays. We call this general process magnetoluminescence. Global requirements on the underlying, extreme particle acceleration processes are described and the likely importance of relativistic beaming in enhancing the observed radiation from a flare is emphasized. Recent research on fluid descriptions of unstable electromagnetic configurations are summarized and progress on the associated kinetic simulations that are needed to account for the acceleration and radiation is discussed. Future observational, simulation and experimental opportunities are briefly summarized.Comment: To appear in "Jets and Winds in Pulsar Wind Nebulae, Gamma-ray Bursts and Blazars: Physics of Extreme Energy Release" of the Space Science Reviews serie

Effects of Acute Febrile Diseases on the Periodontium of Rhesus Monkeys with Reference to Poliomyelitis

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/67269/2/10.1177_00220345510300050301.pd