Probing Quantum Hall Pseudospin Ferromagnet by Resistively Detected NMR

Resistively Detected Nuclear Magnetic Resonance (RD-NMR) has been used to investigate a two-subband electron system in a regime where quantum Hall pseudo-spin ferromagnetic (QHPF) states are prominently developed. It reveals that the easy-axis QHPF state around the total filling factor $\nu =4$ can be detected by the RD-NMR measurement. Approaching one of the Landau level (LL) crossing points, the RD-NMR signal strength and the nuclear spin relaxation rate $1/T_{1}$ enhance significantly, a signature of low energy spin excitations. However, the RD-NMR signal at another identical LL crossing point is surprisingly missing which presents a puzzle

Glass-like transparent high strength polyethylene films by tuning drawing temperature

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service toour customers we are providing this early version of the manuscript. The manuscript will undergocopyediting, typesetting, and review of the resulting proof before it is published in its final formY. Lin greatly acknowledges financial support by the China Scholarship Council (CSC)

Systematic Review Outcomes of autotransplanted teeth with complete root formation: a systematic review and meta-analysis

Abstract Aim: In this review, we assessed clinical outcomes of autotransplanted teeth with complete root formation and the effects of various influencing factors. Materials and Methods: Pubmed, Scopus, Google scholar and a hand search were used to identify prospective and retrospective cohort studies and case series till February 2013. Using multilevel Poisson regression, the annual failure rate (FR), 1-year and 5-year survival rates (SRs), infection-related root resorption rate (RR), ankylosis rate (AR), the influences of systemic antibiotics (SAs), endodontic and splinting modalities and donor tooth morphology were analysed. Failure was defined as a transplant being lost during follow-up. Results: Twenty-six studies were included. The estimated FR, RR, AR, 1-and 5-year SRs were 2.0%, 2.1%, 1.2%, 98.0% and 90.5%, respectively. The estimated FR was higher in the absence of SA, suture splinting, wire splinting ≤14 days and posterior donors. The estimated RR was higher in the absence of SA, endodontic treatment within post-operative 14 days and anterior/premolar donors. The estimated AR was higher with wire splinting and premolar donors. Conclusions: Tooth autotransplantation with complete root formation is a favourable treatment with rare FR, RR and AR. However, SAs, endodontic and splinting modalities and tooth morphology seemed to influence the outcomes

Moving frames applied to shell elasticity

Exterior calculus and moving frames are used to describe curved elastic shells. The kinematics follow from the Lie-derivative on forms whereas the dynamics via stress-forms.Comment: 20 pages, 1 figur

A Survey of Air-to-Ground Propagation Channel Modeling for Unmanned Aerial Vehicles

In recent years, there has been a dramatic increase in the use of unmanned aerial vehicles (UAVs), particularly for small UAVs, due to their affordable prices, ease of availability, and ease of operability. Existing and future applications of UAVs include remote surveillance and monitoring, relief operations, package delivery, and communication backhaul infrastructure. Additionally, UAVs are envisioned as an important component of 5G wireless technology and beyond. The unique application scenarios for UAVs necessitate accurate air-to-ground (AG) propagation channel models for designing and evaluating UAV communication links for control/non-payload as well as payload data transmissions. These AG propagation models have not been investigated in detail when compared to terrestrial propagation models. In this paper, a comprehensive survey is provided on available AG channel measurement campaigns, large and small scale fading channel models, their limitations, and future research directions for UAV communication scenarios

Impedance Control of a Pneumatic Muscles-Driven Ankle Rehabilitation Robot

Pneumatic muscle is a new type of flexible actuator with advantages in terms of light weight, large output power/weight ratio, good security, low price and clean. In this paper, an ankle rehabilitation robot with two degrees of freedom driven by pneumatic muscle is studied. The force control method with an impedance controller in outer loop and a position inner loop is proposed. The demand of rehabilitation torque is ensured through tracking forces of three pneumatic muscle actuators. In the simulation, the constant force and variable force are tracked with error less than 10 N. In the experiment, the force control method also achieved satisfactory results, which provides a good support for the application of the robot in the ankle rehabilitation

From endoplasmic-reticulum stress to the inflammatory response

The endoplasmic reticulum is responsible for much of a cell's protein synthesis and folding, but it also has an important role in sensing cellular stress. Recently, it has been shown that the endoplasmic reticulum mediates a specific set of intracellular signalling pathways in response to the accumulation of unfolded or misfolded proteins, and these pathways are collectively known as the unfolded-protein response. New observations suggest that the unfolded-protein response can initiate inflammation, and the coupling of these responses in specialized cells and tissues is now thought to be fundamental in the pathogenesis of inflammatory diseases. The knowledge gained from this emerging field will aid in the development of therapies for modulating cellular stress and inflammation.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/62741/1/nature07203.pd