48 CMAJ, January 7, 2014, 186(1) © 2014 Canadian Medical Association or its licensors Two patients with grade III obesity (body mass index [BMI] ≥ 40), a 31-year-old man (A) and a 26-year-old woman (B), underwent Roux-en-Y gastric bypass on vertical banded gastroplasty. Both patients followed the same nutritional and postsurgical approach. After 12 months, both patients achieved a similar reduc...

1 Introduction By circumventing the problem of indirect bandgap, Raman scattering offers a path to optical amplification and lasing in silicon [1]. To create the recently demonstrated silicon Raman lasers [2, 3] nonlinear losses due to absorption by free carriers that are generated by two-photon absorption (TPA) had to be eliminated using pulsed pumping or reverse-biased carrier sweep-out. Even...

radiotherapy dose calculations can be evaluated by monte carlo (mc) simulations with acceptable accuracy for dose prediction in complicated treatment plans. in this work, standard, livermore and penelope electromagnetic (em) physics packages of geant4 application for tomographic emission (gate) 6.1 were compared versus monte carlo n-particle extended (mcnpx) 2.6 in simulation of 6 mv photon lin...

Introduction: In radionuclide imaging, object scatter is one of the major factors leading to image quality degradation. Therefore, the correction of scattered photons might have a great impact on improving the image quality. Regarding this, the present study aimed to determine the main and sub-energy windows for triple energy window (TEW) scatter correction method usin...

Up to 85% of the variance in bone mineral density (BMD) is genetically determined. A putative candidate gene involved in the regulation of bone mass is the COLIA1 gene encoding type I collagen, which is the major protein of bone. We examined possible allelic in ̄uences of a G to T COLIA1 gene polymorphism in a recognition site for the transcription factor Sp1 on: (i) gain of forearm BMD using si...

introduction: this study was designed to evaluate dosimetric parameters such as rectal dose, bladder dose, integral dose (id), homogeneity index (hi) and conformity index (ci) in various treatment plans for prostate cancer. materials and methods: pelvic computed tomography (ct) scans of 27 patients were acquired and transferred to the rtdoseplan treatment planning system. for each patient, 8 co...

We report one- (OPA) and two-photon absorption (TPA) excitation energies and cross-sections for a series of platinum acetylides using time-dependent density functional theory. Because of the facile rotations of the trimethylphosphinyl and phenylene groups, we apply a Boltzmann-weighted average over thermally accessible conformations to obtain the final spectra, resulting in better agreement wit...

Abstract The associated production of a dark particle and photon, represented as mono- γ event, is promising channel to probe content dynamics in the sector. In this study, we investigate properties vector matter at future colliders. Photon-like Pauli operators well triple gauge boson interactions involving are considered framework effective field theory. We show that, comp...