Accidental swallowing of partial denture: a case report

We describe a 42-year-old age woman who accidentally swallowed her lower denture, which was composed of eleven teeth. The daily descent of the denture was followed by plain abdominal radiography and physical examination. The image was localized at the left upper quadrant on admission day, but it stopped on its way at the right lower quadrant on day two and three. Since the patient's complaints increased we planned surgical removal of the denture. In this report, we had discussed the diagnosis, follow up and treatment options of swallowed partial denture with current literature review

Review of Efficiency CMOS Class AB Power Amplifier Topology in Gigahertz Frequencies

This paper reviewed the efficiency of CMOS class AB power amplifier topology especially in gigahertz frequencies. CMOS class AB power amplifier is a compromise between class A and class B in terms of linearity and efficiency between 50% to 78.5%. However, CMOS class AB power amplifier cannot have good linearity and efficiency simultaneously due to the breakdown in gate-oxide voltage and effects from hot carrier. The breakdown of oxide prevents optimum drain signal and the effect from hot carrier will reduce the quality of the overall PA design. Several works from year 1999 to 2019 with different topology such as multiple gated transistor, cascode, feedforward linearization, differential circuit, transformer combining method with common source harmonic termination and combination of a dual-switching transistor with a third harmonic tuning technique are discussed and the performances of the power amplifier are compared. The best three CMOS class AB power amplifier topologies were chosen in terms of high efficiency. The topologies are two stages with integrated input and interstage matching, Doherty amplifier combined with drain modulation based architectures and self-biased cascode topology that obtained power added efficiency of 45%, 43% and 42%, respectively. Key performance indicators for class AB power amplifier include frequency, power added efficiency, gain and output power are also discussed in this paper

Mutations in SLC29A3, Encoding an Equilibrative Nucleoside Transporter ENT3, Cause a Familial Histiocytosis Syndrome (Faisalabad Histiocytosis) and Familial Rosai-Dorfman Disease

The histiocytoses are a heterogeneous group of disorders characterised by an excessive number of histiocytes. In most cases the pathophysiology is unclear and treatment is nonspecific. Faisalabad histiocytosis (FHC) (MIM 602782) has been classed as an autosomal recessively inherited form of histiocytosis with similarities to Rosai-Dorfman disease (RDD) (also known as sinus histiocytosis with massive lymphadenopathy (SHML)). To elucidate the molecular basis of FHC, we performed autozygosity mapping studies in a large consanguineous family and identified a novel locus at chromosome 10q22.1. Mutation analysis of candidate genes within the target interval identified biallelic germline mutations in SLC29A3 in the FHC kindred and in two families reported to have familial RDD. Analysis of SLC29A3 expression during mouse embryogenesis revealed widespread expression by e14.5 with prominent expression in the central nervous system, eye, inner ear, and epithelial tissues including the gastrointestinal tract. SLC29A3 encodes an intracellular equilibrative nucleoside transporter (hENT3) with affinity for adenosine. Recently germline mutations in SLC29A3 were also described in two rare autosomal recessive disorders with overlapping phenotypes: (a) H syndrome (MIM 612391) that is characterised by cutaneous hyperpigmentation and hypertrichosis, hepatomegaly, heart anomalies, hearing loss, and hypogonadism; and (b) PHID (pigmented hypertrichosis with insulin-dependent diabetes mellitus) syndrome. Our findings suggest that a variety of clinical diagnoses (H and PHID syndromes, FHC, and familial RDD) can be included in a new diagnostic category of SLC29A3 spectrum disorder

Boards of Trustees\u27 and Senior-Level Administrators\u27 Experience with Presidential Turnover in the Higher Educational System: A Case Study

The purpose of this qualitative single-instrument case study was to explore how leadership styles and funding knowledge impact presidential turnover as experienced by trustees and senior-level administrators using a rural member college of the North Carolina Community College System as the setting. The central question of this study was, how do trustees and senior-level administrators describe their experience with presidential turnover involving the factors of leadership style, institutional funding, and presidential fit? The theories guiding this study were Hersey and Blanchard’s situational leadership theory and Duignan and Macpherson’s educative leadership theory as these theories explain leadership styles which are appropriate for successful leadership practices. A single-instrument qualitative case study method was used to research the leadership styles and funding knowledge as experienced by trustees and senior-level administrators. Data collection included individual face-to-face semi-structured interviews, an anonymous deductive questionnaire, and review of Board of Trustee minutes from the research site. Using the methodologies of Creswell and Yin, data was collected and triangulated to capture meaning units based on responses to the participant interviews, responses of an online anonymous deductive questionnaire, and review of board of trustee minute documents. Results from this study indicated that presidents who are able to adapt to a variety of situations and are competent to learn the necessary information can be successful within the institution

Comparison Of Extended Field Of View And Dual Image Ultrasound Techniques For The Measurement Of The Longitudinal Dimension Of Enlarged Thyroid Glands

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