Detektion fokaler Leberläsionen in der Magnetresonanz-Tomographie mit dem hepatobiliären Kontrastmittel SH L 569 B:Ergebnisse einer prospektiv doppel-blind-randomisierten klinischen Phase-IIb-Studie an 30 Patienten

Untersucht wurde die Detektion fokaler Leberläsionen mit dem leberspezifischen MR-Kontrastmittel Gd-EOB-DTPA. 30 Patienten wurden doppelblind-randomisiert den Dosisgruppen 3, 6, 12,5 und 25 µmol Gd-EOB-DTPA/kg KG und einer Plazebogruppe zugeordnet. Es zeigt sich eine signifikante Steigerung (p < 0,05) des Tumor-Leber-Kontrastes und der Detektionsrate bei einer Dosis von 12,5 µmol Gd-EOB-DTPA/kg KG für alle untersuchten T1-gewichteten Sequenzen. Insbesondere bei Patienten mit Lebermetastasen konnten mehr und vor allem mehr kleine Läsionen gefunden werden. Eine Dosis von 3 und 6 µmol Gd-EOB-DTPA/kg KG konnte keine signifikante Steigerung der Detektionsrate bewirken. Kleinste effektive Dosis war 12,5 µmol Gd-EOB-DTPA/kg KG. Gd-EOB-DTPA erwies sich in dieser Studie als ein sicheres, nebenwirkungsarmes und diagnostisch wirksames neues Kontrastmittel für die MR-Diagnostik fokaler Leberläsionen

The AdS/CFT/Unparticle Correspondence

We examine the correspondence between the anti-de Sitter (AdS) description of conformal field theories (CFTs) and the unparticle description of CFTs. We show how unparticle actions are equivalent to holographic boundary actions for fields in AdS, and how massive unparticles provide a new type of infrared cutoff that can be simply implemented in AdS by a soft breaking of conformal symmetry. We also show that processes involving scalar unparticles with dimensions d_s<2 or fermion unparticles with dimensions d_f<5/2 are insensitive to ultraviolet cutoff effects. Finally we show that gauge interactions for unparticles can be described by bulk gauge interactions in AdS and that they correspond to minimal gauging of the non-local effective action, and we compute the fermion unparticle production cross-section.Comment: 26 pages, 1 figur

Analysis of Antarctic glacigenic sediment provenance through geochemical and petrologic applications

The number of provenance studies of glacigenic sediments in Antarctica has increased dramatically over the past decade, providing an enhanced understanding of ice sheet history and dynamics, along with the broader geologic history. Such data have been used to assess glacial erosion patterns at the catchment scale, flow path reconstructions over a wide range of scales, and ice sheet fluctuations indicated by iceberg rafted debris in circumantarctic glacial marine sediments. It is notable that even though most of the bedrock of the continent is ice covered and inaccessible, provenance data can provide such valuable information about Antarctic ice and can even be used to infer buried rock types along with their geo- and thermochronologic history. Glacigenic sediments provide a broader array of provenance analysis opportunities than any other sediment type because of their wide range of grain sizes, and in this paper we review methods and examples from all size fractions that have been applied to the Antarctic glacigenic sedimentary record. Interpretations of these records must take careful consideration of the choice of analytical methods, uneven patterns of erosion, and spatial variability in sediment transport and rock types, which all may lead to a preferential identification of different elements of sources in the provenance analyses. Because of this, we advocate a multi-proxy approach and highlight studies that demonstrate the value of selecting complementary provenance methods

Iowa Corn and Soybean Producers\u27 Use of Communication Channels

The purpose of this study was to determine the agricultural information preferences of corn and soybean producers in Iowa and the implications for agricultural Extension education. The specific objective of this report was to identify how Iowa producers use communication channels to obtain agricultural information. The results will help agricultural Extension educators and communicators make informed decisions regarding program delivery. The study collected data from corn and soybean producers in five focus groups held throughout Iowa. Focus group data were collected as audiotapes and transcriptions. Analysis was performed through theme coding and qualitative data charts. Study findings revealed that a) producers used a variety of communication channels to gather agricultural information, b) producers primarily used radio and consultations for gathering agricultural information, c) producers used mass media channels for general information and interpersonal communication channels for specific and applicable information, and d) producers looked to Extension for assistance in evaluating information gathered from other sources

Evaporative Water Losses of Some Small Australian Lizards

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/119114/1/ecy1966474589.pd