Objectives: It was aimed to investigate the effects of different doses of follicle stimulating hormone (FSH) and activin A on the growth and maturation of preantral mouse follicles during the in vitro culture. Methods: Preantral follicles (90-100 µm in diameter) were harvested from 6-8 week-old Syrian mice and cultured in TCM199 culture medium for 6 days to see the effect of FSH and Activin A...

There have been discussions about the possible application of super conducting RF cavities in a future muon collider Such RF cavities are expected to work in the frequency range of about MHz which makes the cavity diameter to be about meters for a typi cal elliptical shape Concerns regarding the vibrations induced by Lorentz force in such cavities directed us to investigate alternative cavity g...

The effect of specific cavity dimensions of circular concentric Helmholtz resonators is investigated theoretically, computationally, and experimentally. Three analytical models are employed in this study: ~1! A two-dimensional model developed to account for the nonplanar wave propagation in both the neck and the cavity; ~2! a one-dimensional solution developed for the limit of small cavity leng...

As an amendment to a CRADA (Cooperative Research and Development Agreement) between Forschungszentrum Dresden (FZD) and JLab we have fabricated and tested after appropriate surface treatment a 1.6 cell, 1300 MHz RRR niobium photo-injector cavity to be used in a demonstration test at HZB. Following a baseline test at JLab, the cavity received a lead spot coating of ~8 mm diameter deposited with ...

The cornerstone of severe accident strategy Nordic BWRs is to flood the reactor cavity for long-term coolability an ex-vessel debris bed. As a prerequisite coolability, hot bed formed from fuel coolant interactions (FCI) should be quenched. In present study, coupling MELCOR and COCOMO codes realized with aim analyze quench process under prototypical condition BWR. this coupled simulation, perfo...

We report on a process for the fiber-coupling of electrically driven cavity-enhanced quantum dot light emitting devices. The developed technique allows direct and permanent coupling p-i-n-doped micropillar cavities to single-mode optical fibers. process, fully carried out at room temperature, involves spatial scanning technique, where fiber facet is positioned relative device with diameter 2 $\...

The quality factor (Q), mode volume (V(eff)), and room-temperature lasing threshold of microdisk cavities with embedded quantum dots (QDs) are investigated. Finite element method simulations of standing wave modes within the microdisk reveal that Veff can be as small as 2(lambda/n)(3) while maintaining radiation-limited Qs in excess of 10(5). Microdisks of diameter 2 microm are fabricated in an...

In this chapter, we continue our study of taper-coupled microdisk-QD structures by considering device performance as the disks are scaled down in size. In section 7.1, we use finite element simulations to examine the behavior of Q and Veff as a function of disk diameter. We relate these parameters to those used in cQED, and from this, determine that disks of 1.5-2 μm in diameter are optimal for...

To improve the understanding of the unsteady behavior of supercavitating flows, the author used a three-dimensional Navier-Stokes code (CFDRC, 2000) to model the two-phase flow field around a hemisphere cylinder. The governing equations are discretized on a structured grid using an upwind difference scheme. For different body shapes and cavitation numbers, the cavity shape was determined over t...