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RIFM fragrance ingredient safety assessment, allyl phenylacetate, CAS registry number 1797-74-6.

The use of this material under current use conditions is supported by the existing information. This material was evaluated for Genotoxicity, Repeated Dose Toxicity, Developmental Toxicity, Reproductive Toxicity, Local Respiratory Toxicity, Phototoxicity, Skin Sensitization potential as well as Environmental assessment. Repeated Dose Toxicity was determined to have the most conservative systemic e

Impact of MDCT with intravenous contrast on the survival in patients with acute superior mesenteric artery occlusion.

Acute thromboembolic occlusion in the superior mesenteric artery (SMA) is a condition with high mortality and morbidity. Multi-detector computerised tomography with intravenous contrast enhancement (MDCTiv) may improve diagnostic accuracy and survival. Patients with acute SMA occlusion were identified between 2004 and 2008 at Malmö University Hospital, Sweden. Medical records were analysed. Each M

Aslian linguistic prehistory: a case study in computational phylogenetics

This paper analyzes newly collected lexical data from 26 languages of the Aslian subgroup of the Austroasiatic language family using computational phylogenetic methods. We show the most likely topology of the Aslian family tree, discuss rooting and external relationships to other Austroasiatic languages, and investigate differences in the rates of diversification of different branches. Evidence is

Tribute to a great obstetrician: in memory of Ingemar Ingemarsson.

Ingemar Ingemarsson, grew up in a rural area in Småland in the southern part of Sweden. He studied and graduated at the Medical Faculty at Lund University and started his career in obstetrics and gynecology in 1972 at the University Hospital in Lund. He defended his PhD thesis in 1975, was appointed consultant and later became Head of the Department and Professor in Obstetrics at Lund University.

Influence of atomic density in high-order harmonic generation

We have investigated how high-order harmonics generated in rare gases depend on the atomic density. The peak and the profile of the atomic density in the interaction region were measured as a function of the backing pressure and the distance from the nozzle by a differential interferometry technique, The conversion efficiency for the harmonics in the plateau was found to increase approximately qua

Selective silicate-directed motility in diatoms.

Diatoms are highly abundant unicellular algae that often dominate pelagic as well as benthic primary production in the oceans and inland waters. Being strictly dependent on silica to build their biomineralized cell walls, marine diatoms precipitate 240 × 10(12) mol Si per year, which makes them the major sink in the global Si cycle. Dissolved silicic acid (dSi) availability frequently limits diato

Computational Models of Classical Conditioning: A Comparative Study

We describe computer simulation of a number of associative models of classical conditioning in an attempt to assess the strengths and weaknesses of each model. The behavior of the Sutton-Barto model, the TD model, the Klopf model, the Balkenius model and the Schmajuk-DiCarlo model are investigated in a number of simple learning situations. All models are shown to have problems explaining some of t

Frequency estimation from crossings of an observed mean level

By counting the number of upcrossings of the mean level by a stationary Gaussian process one can estimate the mean frequency of the process. If the mean level is unknown and estimated from the observed mean level, then this crossing estimator is more or less biased, depending on the length of the observation interval. It is shown that if the interval is at least two mean wavelengths, then the bias