2014 The 03B3 decay of the first two positive parity states in 45Ti was reexamined using single 03B3-ray, 03B3-03B3 coincidence and n-03B3 coincidence techniques. E1 transition strengths down to 10-7 Weisskopf units were deduced from the experimental data, which is 30 times lower than the weakest E1 transition known in the other nuclei of the mass region 40 A 50. J. Physique 41 (1980) 239-241 M...

The coincidence spectrometer consists of two scintillation spectrometers, each of which can be used as either a beta-ray or a gamma-ray spectrometer, depending on what crystals are used. The pulses from the first spectrometer are analyzed with a single channel analyzer. The pulses corresponding to a certain energy are picked out with the analyzer and are fed into one channel of a coincidence ci...

We establish coincidence point theorems for two mappings satisfying some contractive conditions in an ordered cone complete metric space, where the cone is not necessarily normal. Also, two examples are given to illustrate the usability of our results. © 2011 Elsevier Ltd. All rights reserved.

Several combinatorial problems of (quasi)crystallography are reviewed with special emphasis on a unified approach, valid for both crystals and quasicrystals. In particular, we consider planar sublattices, similarity sublattices, coincidence sublattices and their module counterparts. The corresponding counting functions are encapsulated in Dirichlet series generating functions, with worked out r...

In this article we studied Nielsen coincidence theory for maps between manifolds of same dimension without hypotheses on orientation. We use the definition of semi-index of a class, we review the definition of defective classes and study the appearance of defective root classes. We proof a semi-index product formula type for lifting maps and we presented conditions such that defective coinciden...

2. If you found that two sets of chromosomes (one from species "X" and one from species "Y") showed a very close match (in the number of chromosomes and many identical banding patterns), it would be most reasonable to say that... A) one species evolved from the other B) both species evolved from a common ancestor relatively recently C) both species may be distantly related D) their chromosome s...

We describe an ordinary Poisson list-mode expectation maximization (OP-LMEM) algorithm with a sinogram-based scatter correction method based on the single scatter simulation (SSS) technique and a random correction method based on the variance-reduced delayed-coincidence technique. We also describe a practical approximate scatter and random-estimation approach for dynamic PET studies based on a ...

1 I n t r o d u c t i o n In P E T measuremen t s , acc identa l coincidence (AC) events are a p r i m a r y source of backg round noise. AC events occur when pho tons t ha t arise f rom sepa ra t e ann ih i l a t ions are mis t aken ly regis tered as having ar isen f rom the same annih i la t ion. In t r ansmiss ion scans the pho tons t h a t o r ig ina te f rom different t r ansmis s ion sour...

In this analysis the structure of hadronic shower cores is investigated with the KASCADE calorimeter. The energy, position, and direction of incidence for individual hadrons above 50 GeV are measured. In parallel, the spatial structure is studied using the simulation program CORSIKA with the hadronic interaction model QGSJET. First results are presented for the showers with primary energies abo...

The coupled electronic and vibrational motions governing chemical processes are best viewed from the molecule's point of view-the molecular frame. Measurements made in the laboratory frame often conceal information because of the random orientations the molecule can take. We used a combination of time-resolved photoelectron spectroscopy, multidimensional coincidence imaging spectroscopy, and ab...