Kristin Williams

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Helicobacter pylori gamma-glutamyltranspeptidase (HpGT) is a general gamma-glutamyl hydrolase and a demonstrated virulence factor. The enzyme confers a growth advantage to the bacterium, providing essential amino acid precursors by initiating the degradation of extracellular glutathione and glutamine. HpGT is a member of the N-terminal nucleophile (Ntn)(More)
At least 10% of the global population has dyslexia. In the United States and Spain, dyslexia is associated with a large percentage of school drop out. Current methods to detect risk of dyslexia are language specific, expensive, or do not scale well because they require a professional or extensive equipment. A central challenge to detecting dyslexia is(More)
Helicobacter pylori gamma-glutamyltranspeptidase (HpGT) is a member of the N-terminal nucleophile hydrolase superfamily. It is translated as an inactive 60 kDa polypeptide precursor that undergoes intramolecular autocatalytic cleavage to generate a fully active heterodimer composed of a 40 kDa and a 20 kDa subunit. The resultant N-terminus, Thr 380, has(More)
Symbol-based dictionaries of text, images and sound can help individuals with aphasia find the words they need, but are often seen as a last resort because they tend to replace rather than augment the user's natural speech. Through two design investigations, we explore head-worn displays as a means of providing unobtrusive, always-available, and glanceable(More)
UNLABELLED OBJECTIVE. Disparities in oral health care among racial and low socioeconomic groups have been reported. The authors compared the communication behaviors and dental services to African-American and white patients in private dental offices. METHODS and Subjects. The investigators directly observed office visits of 292 black and 1,552 white(More)
INTRODUCTION The purpose of this study was to investigate the effects of factors associated with various coronal restorative modalities after root canal treatment (RCT) on the survival of endodontically treated teeth (ETT) and to assess the effect of time lapse between RCT and crown placement after RCT to form a tooth loss hazard model. METHODS(More)
The Surgeon General's 2000 report on oral health found that one-third of adults in the U.S. had not visited a dentist in the previous year. Fear of treatments received during a dental encounter can create a barrier to patients receiving care. Most studies of dental anxiety have focused on phobic patients; relatively few studies have explored attempts to(More)
Current symbol-based dictionaries providing vocabulary support for persons with the language disorder, aphasia, are housed on smartphones or other portable devices. To employ the support on these external devices requires the user to divert their attention away from their conversation partner, to the neglect of conversation dynamics like eye contact or(More)
Audio transcription is an important task for making content accessible to people who are deaf or hard of hearing. Much of the transcription work is increasingly done by crowd workers, people online who pick up the work as it becomes available often in small bits at a time. Whereas work typically provides a ladder for skill development -- a series of(More)