Alpha Channeling in a Rotating Plasma

The wave-particle alpha-channeling effect is generalized to include rotating plasma. Specifically, radio frequency waves can resonate with alpha particles in a mirror machine with ExB rotation to diffuse the alpha particles along constrained paths in phase space. Of major interest is that the alpha-particle energy, in addition to amplifying the RF waves, can directly enhance the rotation energy which in turn provides additional plasma confinement in centrifugal fusion reactors. An ancillary benefit is the rapid removal of alpha particles, which increases the fusion reactivity.Comment: 4 pages and 3 figure

A 750 mW, continuous-wave, solid-state laser source at 313 nm for cooling and manipulating trapped 9Be+ ions

We present a solid-state laser system that generates 750 mW of continuous-wave single-frequency output at 313 nm. Sum-frequency generation with fiber lasers at 1550 nm and 1051 nm produces up to 2 W at 626 nm. This visible light is then converted to UV by cavity-enhanced second-harmonic generation. The laser output can be tuned over a 495 GHz range, which includes the 9Be+ laser cooling and repumping transitions. This is the first report of a narrow-linewidth laser system with sufficient power to perform fault-tolerant quantum-gate operations with trapped 9Be+ ions by use of stimulated Raman transitions.Comment: 9 pages, 4 figure

К методу оценки состояния железнодорожного полотна

Building hardware complex diagnostics of railway track on the basis of analysis of dynamic processes in the movement of train does not have alternatives at the moment. Similar methods have long been used in the operation of aircraft and other fields of technology and mechanical engineering, biomedical field. The ability to simplify calculations of model tasks is provided by authors’ additions to the theory of basic models of «Timoshenko beam» in different situations. Inhomogeneous system of linear differential equations with partial derivatives of the second order is accurately reduced to sequence of solution of two classic mixed problems – derived equations: hyperbolic and Klein-Gordon-Fock. It is shown that the system has two scales (two basic frequencies). The effect of abnormally rapid fluctuations oscillations is explained. A semi-analytical – numerical method is offered that allows to compare effects caused by different boundary conditions.Построение аппаратного комплекса диагностики железнодорожного пути на основе анализа динамических процессов при движении поездного состава в РФ не имеет ныне альтернативы. Аналогичные методы давно используются при эксплуатации летательных аппаратов и в других областях техники и машиностроения, медико-биологической сфере. Возможность упростить расчеты (провести их быстро и недорого) модельных задач позволяют изложенные в статье дополнения к теории основных моделей «балки Тимошенко» в разных ситуациях. Неоднородная система линейных дифференциальных уравнений с частными производными второго порядка точно приводится к последовательности двух вложенных классически смешанных задач – линейного неоднородного гиперболического уравнения и неоднородного уравнения Клейн-Гордона-Фока. Показано, что система имеет два масштаба (две базовые частоты). Объяснён эффект аномально быстрой осцилляции колебаний. Предложен полуаналитический – численный метод, позволяющий сравнить эффекты, вызванные различными краевыми условиями

Electron scattering from polarized deuterium at VEPP‐3

The status, results, and future plans for the experiment measuring the tensor analyzing power of the deuteron using a tensor‐polarized internal target at the VEPP‐3 electron storage ring in Novosibirsk are presented. © 1995 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87517/2/713_1.pd

Status of the T20 experiment at VEPP–3

Using a gaseous polarized deuterium and the 2 GeV electron beam at 2 GeV beam energy the tensor analyzing power, T20, for the NN potential will be measured with the elastic d↘(e,e) reaction at VEPP‐3, Novosibirsk. A description and progress report of the experiment is given. (AIP)Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87524/2/530_1.pd

The interactions of age, genetics, and disease severity on tacrolimus dosing requirements after pediatric kidney and liver transplantation

Purpose: In children, data on the combined impact of age, genotype, and disease severity on tacrolimus (TAC) disposition are scarce. The aim of this study was to evaluate the effect of these covariates on tacrolimus dose requirements in the immediate post-transplant period in pediatric kidney and liver recipients. Methods: Data were retrospectively collected describing tacrolimus disposition, age, CYP3A5 and ABCB1 genotype, and pediatric risk of mortality (PRISM) scores for up to 14 days post-transplant in children receiving liver and renal transplants. Initial TAC dosing was equal in all patients and adjusted using therapeutic drug monitoring. We determined the relationship between covariates and tacrolimus disposition. Results: Forty-eight kidney and 42 liver transplant recipients (median ages 11.5 and 1.5 years, ranges 1.5-17.7 and 0.05-14.8 years, respectively) received TAC post-transplant. In both transplant groups, younger children (<5 years) needed higher TAC doses than older children [kidney: 0.15 (0.07-0.35) vs. 0.09 (0.02-0.20) mg/kg/12h, p = 0.046, liver: 0.12 (0.04-0.32) vs. 0.09 (0.01-0.18) mg/kg/12h, p