Temporal and spatial variability of shallow soil moisture across four planar hillslopes on a tropical ocean island, San Cristóbal, Galápagos

Study region: This paper provides a summary of findings from temporal and spatial studies of soil water content on planar hillslopes across the equatorial island of San Cristóbal, Galápagos (Ecuador). Study focus: Soil water content (SWC) was measured to generate temporal and spatial records to determine seasonal variation and to investigate how the behavior of surface and near-surface root-zone soil water may support island-wide hydrogeology models. SWC probes were installed at four weather stations in a climosequence to generate a temporal record, and spatial surveys of shallow SWC across the selected sites were completed during wet and dry seasons. Temporal differences in SWC were driven by seasonal variations in rainfall and evapotranspiration, while spatial variability remained high during both wet and dry seasons. Unsaturated hydraulic conductivity determined by mini-disk infiltrometers was highly variable across the slopes, as were other hydrologic variables. New hydrological insights for the region: The high heterogeneity of soil water and hydrologic characteristics provides a means to explain why little runoff is observed at the study sites: soils do not saturate uniformly across hillslopes, allowing for runoff generated in one part of the hillslope to be conducted into the soil in adjacent parts of the hillslope. The lack of connected surface runoff helps explain how water enters the groundwater system of the island

Laryngeal framework surgery: a proposal for classification and nomenclature by the Phonosurgery Committee of the European Laryngological Society.

Item does not contain fulltextLaryngeal framework surgery, developed by Isshiki in the 1970s, is one of the most dynamic areas of phonosurgery and these procedures have served to considerably widen our spectrum and options for surgical improvement and/or changing of voice. As these techniques became more accepted and became common throughout the world, several new surgical modifications and different terms have been introduced. These new developments have lead to a confusion regarding terminology and types which make it difficult to communicate between and to compare the results of different authors. In an effort to create a more precise and descriptive list of definitions and terms, the Phonosurgery Committee of the European Laryngological Society has developed a new terminology for laryngeal framework surgery. In accordance with the concept of Isshiki, four types can be separated according to the intended purpose of the surgery: -Approximation laryngoplasty: medialization thyroplasty, arytenoid adduction. -Expansion laryngoplasty: lateralization thyroplasty, vocal fold abduction. -Relaxation laryngoplasty: shortening thyroplasty -Tensioning laryngoplasty: cricothyroid approximation, elongation thyroplasty. The proposed terms are functionally oriented and related closely to the intended purpose of the procedure or related to the underlying pathogenesis of the dysphonia. This new classification should provide a general framework suited not only to classify the current techniques but also to easily apply and adapt to include new procedures and future developments as necessary

Self-assessment of voice therapy for chronic dysphonia

The effects of voice therapy in a group of chronically dysphonic patients are determined using two quality-of-life (QOL) instruments: the Voice Handicap Index (VHI), and a simple three-item outcome scale (three visual analogue scales). Both instruments measure changes in the quality of the voice itself and in the extent of impairment resulting from the dysphonia as experienced by the patient in social and occupational settings. Statistical tests conducted on pre- and post-treatment data indicated significant improvements on both instruments for the group as a whole. At the individual level, however, the effects were diverse. For roughly 50% of the subjects, a significant improvement could be established. The positive changes as measured with the three-item scale were greater than those measured with the VHI. The results suggest that the two QOL instruments measure slightly different aspects of the subjective perception of the therapy effects. In order to obtain a general evaluation of the patient's handicap, it may suffice to ask some simple questions