In this article, we explore the use of fluorescence spectroscopy to image growth patterns in the marine bivalve Arctica islandica (L.). The method presented here does not require any chemical treatment of the polished shell section and yields results comparable to acetate peels of acid-etched shell sections and Mutveitreated shell sections. Further, our results indicate that the annual growth l...

This paper presents a new approach to automatically construct multiple surfaces from set of 2D sections. A convex curve and centripetal normal force are employed to split each section to a set of shells. Each shell contains a single image region and defines an initial contour evolved by the geometric heat differential equation in the direction of a centripetal force toward the outer boundary of...

Whereas atom-molecule collisions have been studied with complete quantum-state resolution, interactions between two state-selected molecules have proven much harder to probe. Here, we report the measurement of state-resolved inelastic scattering cross sections for collisions between two open-shell molecules that are both prepared in a single quantum state. Stark-decelerated hydroxyl (OH) radica...

The 2pns(nd) inner-shell photoexcited resonance states in argon are studied using a combination of optical potential, multichannel quantum defect theoretical, and R-matrix methods. Optical potential inclusion of the infinite number of core decay channels correctly accounts, in an implicit manner, for the physical broadening of resonances within the 3p and 3s cross sections, but highly asymmetri...

A number of software routines were written for the public domain Macintosh-based video-densitometry program, Image, to facilitate in situ hybridization analysis. These routines utilize fiducial marks drilled in unused portions of the brain to rotate high-magnification images of individual sections so that they may be placed in register. The regions of interest within the registered sections are...

Phi meson production in pion-baryon and baryon-baryon interactions near the production threshold is studied in a boson-exchange model. Parameters in this model are either taken from the Bonn model for the nucleon-nucleon potential or determined from the measured phi meson decay width and the experimental data for the reactions πp→φn and pp→ppφ. The isospinaveraged cross sections for the reactio...

The dressing of nucleons as embodied in single-particle spectral functions is incorporated in the description of nucleon-nucleon scattering in nuclear matter at a density corresponding to kF51.36 fm . In order to clarify the new features associated with the complete off-shell behavior of the single-particle motion, results involving mean-field particles are also presented with special emphasis ...

We report measurements of electron-impact excitation cross sections for the strong K-shell n = 2 → 1 transitions in S xv, using LLNL EBIT-I electron beam ion trap, two crystal spectrometers, and EBIT Calorimeter Spectrometer. The are determined by direct normalization to well-known radiative capture, measured simultaneously. Using contemporaneous polarization with whose dispersion planes orient...

The relativistic convergent close-coupling method is applied to calculate cross sections for electron scattering from atomic tin. We present integrated and momentum-transfer elastic the ground first four excited states of tin projectile energies ranging 0.1 500 eV. Integrated selected differential are presented excitation 5p2, 5p6s, 5p5d 5p6p manifolds state. total ionisation calculated states,...