BACKGROUND The increasing incidence of healthcare-associated infections (HAIs) and multidrug-resistant organisms demonstrate the need for innovative technological solutions. Staphylococcus aureus, Streptococcus pneumonia, Escherichia coli, and Pseudomonas aeruginosa in particular are common pathogens responsible for a large percentage of indwelling medical device-associated clinical infections....

Single crystalline tin oxide (SnO2) nanowires have been synthesized by carbothermal reduction of SnO2 nanopowder followed by thermal evaporation of the reduced precursor and growth via the vapor-liquid-solid (VLS) growth mechanism. The nanowires are deposited on single crystalline TiO2 substrates of orientations of (100) and (110) that are coated with a thin film and colloids of gold (Au) catal...

Keywords: Metalorganic chemical vapor deposition (MOCVD) Metal–oxide–semiconductor field effect transistor (MOSFET) Nanowire a b s t r a c t Depletion-mode metal–oxide–semiconductor field effect transistors (MOSFETs) with GaAs planar nano-wire (NW) channels are successfully demonstrated. The Si-doped planar GaAs NWs are grown in a selective lateral epitaxy manner via Au-assisted vapor–liquid–so...

BACKGROUND Lichen sclerosus is an inflammatory disease of unknown etiology affecting the anogenital skin and associated with the development of squamous cell carcinoma. It is not known whether long-term topical treatment with a potent steroid can cure this disease and thus prevent malignant evolution. OBJECTIVES To analyze the rates of remission, recurrence, and chronic evolution of vulvar li...

Objective To assess the treatment outcomes of an HIV clinic in rural Limpopo province, South Africa. Methods A retrospective cohort study involving medical records review of HIV-positive patients initiated on antiretroviral treatment (ART) was conducted from December 2007 to November 2008 at Letaba Hospital. Data on socio-demographic characteristics, CD4 counts, viral loads (VLs), opportunist...

Impaired motivation is present in a variety of neurological disorders, suggesting that decreased motivation is caused by broad dysfunction of the nervous system across a variety of circuits. Based on evidence that impaired motivation is a major symptom in the early stages of Huntington's disease, when dopamine receptor type 2-expressing striatal medium spiny neurons (D2-MSNs) are particularly a...

Vulvar Lichen Sclerosus (VLS) is a chronically inflammatory disorder that requires early diagnosis and long-term follow-up for successful therapy prevention of malignancy. In this paper, we propose multimodal optical coherence tomography (MM OCT) as non-invasive diagnostic technique advanced VLS. The MM OCT provides 3D real-time visualization the vulvar skin structure with high spatial resoluti...

The kinetic Monte Carlo (MC) model of nanowhisker (NW) growth is suggested. Two variants of growth are possible in the model—molecular beam epitaxy (MBE) and chemical vapor deposition (CVD). The effect of deposition conditions and growth regimes on the whisker morphology was examined within the framework of the vapor–liquid–solid (VLS) mechanism. A range of model growth conditions corresponding...

Crystalline boron nanowires were grown on Pt coated sapphire substrates using pulsed laser ablation at different temperatures under a pressure of 50 Pa. High-resolution TEM and transmission electron diffraction (TED) analyses were performed to determine the crystal structure of these nanowires. These nanowires had diameters ~100 nm and lengths in the micrometer range. Systematic analyses showed...

Highly crystalline b-Ga2O3 nanowires with two morphologies have been synthesized through physical evaporation of Te doped GaAs powder in Ar atmosphere. Growth is not based on VLS mechanism due to absence of Te. S in place of Te resulted in similar nanostructures. Some of the nanowires exhibit herringbone morphology with presence of hexagonal crystallites in regular spacing along the nanowire ax...