Time-resolved turbulent dynamo in a laser plasma.

Understanding magnetic-field generation and amplification in turbulent plasma is essential to account for observations of magnetic fields in the universe. A theoretical framework attributing the origin and sustainment of these fields to the so-called fluctuation dynamo was recently validated by experiments on laser facilities in low-magnetic-Prandtl-number plasmas ([Formula: see text]). However, the same framework proposes that the fluctuation dynamo should operate differently when [Formula: see text], the regime relevant to many astrophysical environments such as the intracluster medium of galaxy clusters.

Inferring morphology and strength of magnetic fields from proton radiographs.

Proton radiography is an important diagnostic method for laser plasma experiments and is particularly important in the analysis of magnetized plasmas. The theory of radiographic image analysis has heretofore only permitted somewhat limited analysis of the radiographs of such plasmas. We furnish here a theory that remedies this deficiency.

Subperiosteal midface lift: its role in static lower eyelid reconstruction after chronic facial nerve palsy.

Purpose: To describe the effect of subperiosteal midface lift on lower eyelid position of patients with chronic facial nerve palsy.

Methods: In an observational prospective study nine patients underwent subperiosteal midface lift. Indications for surgery were lower eyelid paralytic retraction, lagophthalmos, ocular surface disruption, reactive tearing, midface ptosis, and facial asymmetry.