Publications by authors named "Zachary Bryan"

Weight loss clinics are common in the United States.  Unfortunately, some offer dubious weight loss methods such as self-administered human chorionic gonadotropic (HCG) injections. HCG products are unregulated, yet, widely available.

View Article and Find Full Text PDF

Vitamin D deficiency causes rickets, but has been associated with various diseases, including atopic dermatitis (AD). This study analyzes serum vitamin D in pediatric medical center patients with AD and potential confounding factors. At Cardinal Glennon Children's Hospital, charts of 665 children with serum 25-hydroxyvitamin D levels taken between 2009 and 2013 were retrospectively reviewed.

View Article and Find Full Text PDF

Background: Reconstruction of defects straddling the alar groove presents the dual challenges of resurfacing the nasal sidewall and alar subunits while simultaneously recreating the alar groove. The wave flap (WF) is a modified, medially based, nasal sidewall rotation flap that uses locally recruited tissue from the nasal sidewall to facilitate color and texture match and permit camouflage of scars.

Objective: To detail a surgical repair for defects in the horizontally oriented middle third of the alar groove.

View Article and Find Full Text PDF

Catalyst-transfer polycondensation (CTP) is a relatively new method for synthesizing conjugated polymers in a chain-growth fashion using transition metal catalysis. Recent research has focused on screening catalysts to broaden the monomer scope. In this effort, small molecule reactions have played an important role.

View Article and Find Full Text PDF

We review recent advances of AlGaN/GaN high-electron-mobility transistor (HEMT)-based electronic biosensors. We discuss properties and fabrication of III-nitride-based biosensors. Because of their superior biocompatibility and aqueous stability, GaN-based devices are ready to be implemented as next-generation biosensors.

View Article and Find Full Text PDF
Article Synopsis
  • Optimizing charge transport in organic polymer semiconductors, like P3HT, is essential for better device performance, and factors such as film fabrication methods and solvent choice are significant influences on hole mobility.
  • Sum frequency generation (SFG) vibrational spectroscopy was utilized to map the surface ordering of P3HT films to understand how different solvents affect surface interactions and film properties.
  • Supplementary techniques like X-ray diffraction (XRD) and scanning electron microscopy (SEM) supported the findings, showing that solvent composition impacts the surface morphology and bulk crystallinity of the films.
View Article and Find Full Text PDF

We report the case of a 2-year-old boy from a family with limited financial resources who presented with cutaneous abnormalities, a history of congenital heart defect, and a presumptive diagnosis of Noonan syndrome. Genetic testing had been deferred because of a lack of funds. Skin findings were characteristic of cardiofaciocutaneous syndrome, including keratosis pilaris, ichthyosis, sparse eyebrows, and multiple nevi.

View Article and Find Full Text PDF

Over the past 5 years we have developed a multidisciplinary service for the treatment of extremity sarcoma. This service includes orthopedic oncology, neurosurgery, medical and radiation oncology, and plastic surgery. Prior to 2007, the role of plastic surgery in this multidisciplinary team was limited.

View Article and Find Full Text PDF

An N-heterocyclic carbene-ligated palladium catalyst was discovered to mediate living, chain-growth polymerizations of both phenylene- and thiophene-based monomers. Polymerization of a fluorene-based monomer, on the other hand, did not proceed through a living, chain-growth pathway. Excitingly, block copolymerizations of phenylene and thiophene proceeded via a chain-growth pathway, regardless of the order of monomer addition.

View Article and Find Full Text PDF