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In this study, we document sedimentary characteristics of overbank flood deposits associated with the epic A.D. 2011 flood along the Lower Mississippi River (southern USA) and directly compare the findings to sedimentation from a comparable flood event in 1973, with the general purpose of understanding how extreme floods contribute to floodplain depositional patterns and accretion rates of embanked fluvial systems. The thicknesses of the 2011 flood deposits averaged 138 mm along natural levee crests, 9 mm on meander scrolls, and 3 mm in backswamps. These thicknesses are considerably less than those documented for the 1973 flood, sampled at the same locations. We contend that less sedimentation in 2011 occurred because the flood was not supplied with much upstream sediment from the Missouri River. Further, the 2011 sediments are coarser than in 1973, indicating that the higher 2011 flood levels were associated with more energetic overbank flows that flushed fine-grained sediments downstream within the narrow embanked floodplain corridor. The largest recorded flood in North American history is only marginally preserved in the embanked floodplain stratigraphy of the alluvial valley of Earth's third largest fluvial system. [ABSTRACT FROM AUTHOR]

The article offers information on primary osteoporosis of the hip, a genetic disease caused by genetic variants among Europeans. It states that primary osteoporosis of the hip occurs primarily at a rate of 3% to 6% worldwide populations with European ancestry. The article also discusses the epidemiology of the disease, the genetic architecture of osteoporosis, and a study of women in Great Britain showing that the disease has no common genetic factors with knee or hand osteoporosis.

A genomic clone of the European flounder (Platichthys flesus L.) beta-actin gene was isolated from a genomic DNA library and sequenced. The beta-actin gene has a predicted open reading frame of 373 amino acids, that was found to have high homology (99.2-99.7% identical) with several other species.