198 research outputs found

    Threshold Energies of Electrons and Holes for Impact Ionization in Silicon

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    A rare case of cervical dysgenesis presented with endometriosis and ectopic kidney

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    Cervical dysgenesis is a rare cause of obstructive amenorrhoea. We are presenting a case of a 15-year-old girl presented with primary amenorrhoea diagnosed with cervical dysgenesis with left ectopic kidney and endometriosis. The patient underwent laparoscopy followed by exploratory laparotomy with total abdominal hysterectomy with left salpingectomy followed by neovaginal creation and right ureteric D-J stenting and vaginal mould insertion. Cervical agenesis treatment should aim at the re-establishment of patency of the outflow tract. A fistulous tract with stent placement has been done in some cases but eventually, hysterectomy is required in view of recurrent and severe pelvic infection is a common problem. Ovarian function can be preserved if a hysterectomy is performed timely

    In-vitro release study of hydrophobic drug using electrospun cross-linked gelatin nanofibers

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    Delivering hydrophobic drug within hydrophilic polymer matrix as carrier is usually a challenge. Here we report the synthesis of gelatin nanofibers by electrospinning, followed by testing them as a potential carrier for oral drug delivery system for a model hydrophobic drug, piperine. Electrospun gelatin nanofibers were crosslinked by exposing to saturated glutaraldehyde (GTA) vapor, to improve their water resistive properties. An exposure of only 6 min was not only adequate to control the early degradation with intact fiber morphology, but also significantly marginalized any adverse effects associated with the use of GTA. Scanning electron microscopy imaging, Fourier transform infrared spectroscopy and thermogravimetric analysis were done to study nanofiber morphology, stability of drug and effect of crosslinking. The pH of release medium was also varied as per the gastrointestinal tract for in-vitro drug release study. Results illustrate good compatibility of hydrophobic drug in gelatin nanofibers with promising controlled drug release patterns by varying crosslinking time and pH of release medium

    Threshold Energy of Impact Ionization by Electrons and Holes in Germanium

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