Proximity-induced ferromagnetism in graphene revealed by the anomalous Hall effect.

We demonstrate the anomalous Hall effect (AHE) in single-layer graphene exchange coupled to an atomically flat yttrium iron garnet (YIG) ferromagnetic thin film. The anomalous Hall conductance has magnitude of ∼0.09(2e(2)/h) at low temperatures and is measurable up to ∼300  K.

Ferroelectric-like SrTiO3 surface dipoles probed by graphene.

The electrical transport properties of graphene are greatly influenced by its environment. Owing to its high dielectric constant, strontium titanate (STO) is expected to suppress the long-range charged impurity scattering and consequently to enhance the mobility. However, the absence of such enhancement has caused some controversies regarding the scattering mechanism.

Can the need for future surgery for acute traumatic anterior shoulder dislocation be predicted?

Background: Some surgeons believe that they can identify patients who are at high risk for shoulder redislocation and that these patients are best served by immediate surgical stabilization. This natural history study was performed to examine the validity of this concept and to determine whether it is possible to predict the need for future surgery at the time of the index injury and examination.

Methods: One hundred and thirty-one patients were followed for an average of four years after their first shoulder dislocation.

Open Bankart repair: correlation of results with postoperative subscapularis function.

Background: The potential weakness of the open Bankart procedure is the takedown and repair of the subscapularis tendon. It is not known to what extent this part of the procedure affects the final result.

Hypothesis: The function of the subscapularis muscle after surgery will be related to the patient's perception of surgical success.

Does anticoagulation do more harm than good?: A comparison of patients treated without prophylaxis and patients treated with low-dose warfarin after total knee arthroplasty.

A cohort of 785 patients treated without any form of thromboprophylaxis was compared with an identical group of 957 patients treated with 6 weeks of low-dose warfarin. All complications seen within 90 days of surgery were recorded. The control group had a total complication rate of 2.