Carbon nanotubes (CNT) grown on nanoporous carbon (NPC), which yields coexisting amorphous and graphitic nanoarchitectures, have been prepared on a large scale from zeolitic imidazolate framework (ZIF) by introducing bimetallic ions (Co2+ and Zn2+). Interestingly, the hybrid Co/Zn-ZIF-derived NPC showed rich graphitic CNTs on the surface. This NPC was utilized for a coin-type supercapacitor cell with an aqueous electrolyte, which showed enhanced retention at high current density and good stability over 10000 cycles.

We report the fabrication of a magnesium diboride (MgB2) coil and evaluate its persistent-mode operation in a system cooled by a cryocooler with solid nitrogen (SN2) as a cooling medium. The main purpose of SN2 was to increase enthalpy of the cold mass. For this work, an in situ processed carbon-doped MgB2 wire was used. The coil was wound on a stainless steel former in a single layer (22 turns), with an inner diameter of 109 mm and height of 20 mm without any insulation. The two ends of the coil were then joined to make a persistent-current switch to obtain the persistent-current mode.

Purpose: To investigate the possible association of oxidative stress with keratoconus (KC), we estimated the changes in relative mitochondrial DNA (mtDNA) content.

Keratoconus is a progressive thinning and anterior protrusion of the cornea that results in steepening and distortion of the cornea, altered refractive powers, and reduced vision. Keratoconus has a complex multifactorial etiology, with environmental, behavioral, and multiple genetic components contributing to the disease pathophysiology.

PURPOSE. Keratoconic corneas exhibit more mitochondrial DNA (mtDNA) damage than do normal corneas and thus mtDNA may represent a potential candidate for genetic susceptibility studies in keratoconus. To test this hypothesis we determined mitochondrial haplogroups in Saudi patients with keratoconus and healthy controls of same ethnicity. METHODS. Mitochondrial haplogrouping was performed by polymerase chain reaction–based automated Sanger sequencing in 114 patients with keratoconus and 552 healthy controls. RESULTS.

PURPOSE. We investigated whether a group of patients with keratoconus (KTCN) harbor mutations in the mitochondrial genome.
METHODS. We sequenced the full mitochondrial genome in a group of Saudi patients with KTCN (n ¼ 26) and 100 ethnically matched controls who had no KTCN by examination.

We investigated Saudi patients with familial and sporadic Keratoconus for mutations in the Superoxide dismutase 1, soluble (SOD1) gene. We sequenced the entire coding region, exon-intron boundaries and intron 2 encompassing a 7-bp deletion in clinically confirmed Keratoconus patients (n = 55) and 100 ethnically matched healthy controls. All cases and controls were unrelated. Sequencing the SOD1 gene revealed the presence of four nucleotide changes and all were non-coding. Those were g.12035 C4A; g.13978 T4A; g.12037 G4A and g.11931 A4C with similar frequencies in patients and controls.

Purpose: To assess long-term efficacy and safety of deep sclerectomy (DS) in uveitic glaucoma. Patients and methods: Thirty-three consecutive eyes (21 patients) with uveitic glaucoma underwent DS with mitomycin C and implant. Goniopuncture (GP) was done for uncontrolled postoperative intraocular pressure (IOP).

Objectives: To determine the potential risk factors for retinal detachment after cataract surgery.

Purpose: To determine prognostic factors in patients with Vogt–Koyanagi–Harada (VKH) disease who were treated with high-dose corticosteroids. Methods: Retrospective analysis of 87 patients (174 eyes).