We compute the Hilbert polynomial and the Poincar´e function counting the number of fixed jet-order differential invariants of conformal metric structures modulo local diffeomorphisms, and we describe the field of rational differential invariants separating generic orbits of the diffeomorphism pseudogroup action. This resolves the local recognition problem for conformal structures.

This study investigates for the first time the tide-influenced fjord-head delta in Dicksonfjorden, a fjord in central Spitsbergen, Svalbard. In order to examine the deposits and processes, sediment cores, surface observations and bulk samples have been obtained. Sedimentary facies, log transects and composite logs are presented. Sediment cores are dated with the 210Pb dating method to provide an ...

The Late Paleozoic sedimentary environments of the Ottar basin in the SW Barents Sea was studied using five 3D seismic surveys. By the use of seismic stratigraphic analysis and correlation to wells located in close proximity to the study area, the Paleozoic succession has been subdivided into 4 main units: Billefjorden Group (Late Devonian – Mid Carboniferous), Gipsdalen Group (Mid Carboniferous – ...

In the present study, chirp coded pulses are investigated with respect to high frequency imaging. These pulses were used drive broadband polymer transducers assembled from an adhesive-free layer-be-layer deposition method. The image quality obtained from using a long chirp coded pulse was compared with images generated from shorter pulses. This includes the Ricker wavelet and the square pulse most ...

A high-resolution sedimentary record from ODP Leg 151 Hole 907A has been investigated with sedimentological and geochemical methods to study the paleoenvironmental evolution of the Iceland Sea over a 1-Myr time interval in the Late Miocene. Climate deterioration characterizes the Neogene period, culminating in a transition to bipolar glaciations in the Late Pliocene (Thiede and Myhre, 1996). Ice ...

Two basis sets-a large and a small one-are associated with each nucleus of the system. Each atom has its own separate one-electron basis comprising the large basis set of the atom in question and the small basis sets for the partner atoms in the complex. The perturbed atoms in molecules and solids model is at core of the approach since it allows for the definition of perturbed atoms in a system. It ...

This letter discusses cross-correlation features de- rived from near-coincident RADARSAT-2 quad-polarimetric and RISAT-1 hybrid-polarity (HP) measurements collected during the NOrwegian Radar oil Spill Experiment in 2015 (NORSE2015). We show that the imaginary part of the cross-correlation between RH and RV is an HP parallel to the real part of the cross-correlation between HH and VV earlier ...

A summary of recent synthesis approaches to 3,4-dihydroquinoxaline-2-ones is discussed herein along with highlights of biological activity. The synthetic approaches include access to enantiopure heterocycles from chiral pool amino acids via coupling/cyclization, Michael addition/cyclization cascades, 3,3-disubstituted systems from multicomponent couplings, Bargellini reaction or photochemical ...

The discovery of IP25 as a qualitative biomarker proxy for Arctic sea ice and subsequent introduction of the so-called PIP25 index for semi-quantitative descriptions of sea ice conditions has significantly advanced our understanding of long-term paleo Arctic sea ice conditions over the past decade. We investigated the potential for classification tree1 (CT) models to provide a further approach ...

Dette studiet har fokus på analyse og korrelasjon av post-kaledonske riftstrukturer i nordre Nordland og Sør-Troms, hvor målet er å sammenligne antatte paleozoiske og mesozoiske sprø forkastninger på land med lignende strukturer på havbunnen og i fjorder og sund. Ved bruk av høyoppløselige digitale verktøy fra land (kartverket, norgeibilder, norgei3d) og på havbunnen (mareano), tar denne masteroppgaven ...