Search results for "spin"

Nuclear Dependence of the Transverse-Single-Spin Asymmetry for Forward Neutron Production in Polarized p+A Collisions at √sNN = 200 GeV

2018

During 2015, the Relativistic Heavy Ion Collider (RHIC) provided collisions of transversely polarized protons with Au and Al nuclei for the first time, enabling the exploration of transverse-single-spin asymmetries with heavy nuclei. Large single-spin asymmetries in very forward neutron production have been previously observed in transversely polarized p + p collisions at RHIC, and the existing theoretical framework that was successful in describing the single-spin asymmetry in p + p collisions predicts only a moderate atomic-mass-number ( A ) dependence. In contrast, the asymmetries observed at RHIC in p + A collisions showed a surprisingly strong A dependence in inclusive forward neutron …

Datortomogrāfijas protokolu pielietojums kakla traumu gadījumā

2019

Bakalaura darbā ’’Datortomogrāfijas protokolu pielietojums kakla traumu gadījumā’’ tika izvirzīts mērķis: noskaidrot datortomogrāfijas protokolu pielietojumu kakla trauma gadījumā un to kvalitātes ietekmējošos faktorus. Darba teorētiskajā daļā tiek aprakstīta kakla skriemeļa normālā anatomija, fizioloģija, datortomogrāfijas anatomija, kā arī datortomogrāfijas protokolu pielietojums un pareiza pacientu pozicionēšana kvalitātes uzlabošanai un dozas samazināšanai. Darba pētījumā tika izveidota kritēriju tabula un tika izvērtēti 40 datortomogrāfijas kakla skriemeļu izmeklējumi traumu gadījumos. Darbā izmantotās pētniecības metodes – teorētiskās literatūras analīze un kvalitatīvā pētniecības met…

Resecciones sacras en tumores primarios. Resultados funcionales y estudio biomecánico de reconstrucción

2017

INTRODUCCIÓN: La sacrectomía en bloque es un procedimiento poco frecuente y complejo que produce un impacto significativo en la morbilidad y mortalidad del paciente. Asimismo, la sacrectomía total produce una importante alteración de la estabilidad espinopélvica, suponiendo un importante problema en su reconstrucción que todavía no ha sido resuelto. Los objetivos del estudio clínico es analizar los resultados funcionales (dolor, función motora, vesical e intestinal), quirúrgicos y oncológicos de los pacientes sometidos a una sacrectomía en bloque. OBJETIVOS: El objetivo del estudio clínico es evaluar los resultados funcionales (dolor, función motora, vesical e intestinal), quirúrgicos y onc…

I respingimenti e la tutela dei diritti umani

2012

Role of post mortem computed tomography in diagnosis of upper cervical fractures in child due to road accident: A case report and literature review

2019

The upper cervical spine has unique anatomical features that distinguish it from the remainder of the cervical spine. Its motion segments make up a large amount of total cervical spine motion and, as a result,predispose it to a unique set of injuries. Cervical spine trauma is a common problem with a wide range of severity from minor ligamentous injury to section of the spinal cord. The use of post mortem CT (PMCT), and the subsequent multi-planar and volume rendering reconstruction techniques can provide non-invasive, objective operator-independent imaging data set that may be further reviewed by other specialists. and can substantially add to forensic examinations of the skeleton, especial…

Spinning

1999

Structure and dynamics in liquid bismuth and Bin clusters: A density functional study

2014

Density functional/molecular dynamics simulations with more than 500 atoms have been performed on liquid bismuth at 573, 773, 923, and 1023 K and on neutral Bi clusters with up to 14 atoms. There are similar structural patterns (coordination numbers, bond angles, and ring patterns) in the liquid and the clusters, with significant differences from the rhombohedral crystalline form. We study the details of the structure (structure factor, pair, and cavity distribution functions) and dynamical properties (vibration frequencies, diffusion constants, power spectra), and compare with experimental results where available. While the three short covalent bonds typical to pnictogens are characteristi…

Quantum coherent manipulation of spin information in molecular nanomagnets

2023

Los sistemas cuánticos de dos niveles basados en estados de espín, conocidos como ``qubits de espín'', son bloques prometedores para el desarrollo de tecnologías cuánticas. Entre las distintas plataformas físicas, los qubits de espín definidos en imanes de molécula única (SMM) son candidatos prometedores porque su estructura electrónica puede ajustarse fácilmente mediante ingeniería química (es decir, el Hamiltoniano de espín molecular puede modificarse con facilidad). Sin embargo, los qubits moleculares de espín generados en SMM se enfrentan a varios retos: coherencia cuántica frágil, control coherente insuficiente de los estados de espín y generación de entrelazamiento entre los qubits de…

Spin Pumping and Torque Statistics in the Quantum Noise Limit

2017

We analyze the statistics of charge and energy currents and spin torque in a metallic nanomagnet coupled to a large magnetic metal via a tunnel contact. We derive a Keldysh action for the tunnel barrier, describing the stochastic currents in the presence of a magnetization precessing with the rate Ω. In contrast to some earlier approaches, our result is valid for an arbitrary ratio of ℏΩ/kBT. We illustrate the use of the action by deriving spintronic fluctuation relations, the quantum limit of pumped current noise, and consider the fluctuations in two specific cases: the situation with a stable precession of magnetization driven by spin transfer torque, and the torque-induced switching betw…

Replication of herpes simplex virus type 1 and 2 in the medulla of the adrenal gland after vaginal infection of mice.

1996

After vaginal infections of mice with neuroinvasive strains of herpes simplex virus type 1 and 2 (HSV-1, HSV-2) virus replicates in the epithelium of the vagina, in the paravaginal ganglia, in the spinal cord and finally in the brain and in the adrenal glands. However, viral antigens could be demonstrated only in the medulla of the adrenal glands but not in the cortex, as assessed by immunohistochemistry (IHC). HSV could not be isolated from liver, spleen, uterus, and ovaries. This contrasts to the intraperitoneal (i.p) route of infection with replication in different visceral organs including the adrenal gland's cortex.