On the stability of the stochastic parabolic Itô equation with delay and Markovian jump

AbstractWe present a new result concerning the stability of the stochastic parabolic Itô equation subject to homogenous white noise. Our main results state that this system is exponentially stable by means of a new Lyapunov–Krasovskii functional and a linear matrix inequality (LMI). A numerical example is exploited to show the usefulness of the derived LMI-based stability

Foreign body in vagina: a cause of persistent vaginal discharge in a prepubescent child

Vaginal discharge in prepubertal children is mainly due to hypoestrogenic state of vaginal mucosa making it thin and alkaline leading to mucosal invasion by pathogen. In paediatric case persistent foul smelling, blood stained discharge not responding to medical therapy should arouse suspicion of foreign body. Authors report an interesting case of 2 years old child who presented with persistent vaginal discharge and was found to have a retained foreign body in the vaginaneonatal resuscitation in preeclampsia. Acute fetal distress in labour or neonatal nursery admission could not be predicted

Design of a Partial Resonant Inverter for solar photovoltaic applications

This paper presents a solar-powered Partial Resonant Inverter (PRI) interfaced with an asymmetrical cascaded nine-level inverter. The DC input of the proposed system is obtained using Solar Photovoltaic (SPV) panel. The input DC sources fed to the asymmetrical cascaded nine-level inverter are in the ratio of 1:3. The step modulated nine-level inverter works with a precalculated switching angle for a fixed modulation of 0.7. Compared to the conventional 50 Hz inverter and the multi-output transformer design, the proposed system is more compact because of the high-frequency AC link. The PRI ensures Zero Voltage Switching (ZVS) and reduces the switching losses. The proposed scheme has been validated in the MATLAB/ SIMULINK environment and an experimental prototype is built in the laboratory. Based on the investigations the Selective Harmonic Elimination (SHE) method gives superior performance when compared to the Optimal Harmonic Stepped Modulation (OHSM) method. From the results and comparative analysis, the proposed system uses fewer switches to obtain the nine-level output, uses the PRI setup with the multioutput transformer to make the design compact and improves the power quality of the system

Degree, duration and causes of visual loss in uveitis

INTRODUCTION: The uvea is the middle vascular tract of eyeball. Inflammation of uveal tract is called uveitis. It is one of the most under diagnosed and under treated condition in ophthalmology . Being highly vascular , it is the main source of nutrition to the eyeball . For the same reason , it is an important source of hematogenous dissemination from and into the eye . It consists of three parts namely – iris , ciliary body and choroid. Except for the anterior surface of iris , most of it is hidden between the other two layers and require special investigative techniques for diagnosis . It is very sensitive due to the rich innervation and obviously due to above reasons, it responds to any insult to the eyeball by getting inflamed. AIM OF THE STUDY: 1. To study the clinical patterns of uveitis in the patients referred to a tertiary care hospital 2. To evaluate the complications associated with uveitis 3. To investigate the degree, duration and causes of visual loss in these patients and to compare the same with other studies. MATERIALS AND METHODS: A randomized prospective study was performed on consecutive uveitis patients referred to the Uvea clinic, Department of Ophthalmology, Government Rajaji Hospital, Madurai. The study was started in the month of September 2004 and 100 patients were selected and followed up for a period of 2 years. Inclusion Criteria: The patients included in this study had Age > 15 years, Uveitis new case Exclusion Criteria : The following patients are excluded from the study Age < 15 years - Intraocular inflammation secondary to bacterial / fungal keratitis - Onset of uveitis was < 3 months of intraocular surgery - Patients treated outside with periocular, Systemic steroids / Immuno suppressives - Patients having speech / hearing problems. SUMMARY: In this study, uveitis commonly occurred in males (60% of cases) 60% of uveitis had acute course, while 40% had chronic course. i.e., Acute uveitis is commonest in this study. Permanent visual damage leading to severe visual loss occurred in 6 patients leading to the mean duration of 24 months of visual loss. The mean duration of visual loss in cases with moderate visual loss was 17.25 moths. CONCLUSION: Visual loss is common in patients with uveitis. This prospective study was basically a descriptive study analyzing 100 cases of uveitis that presented to the eye department of Govt. Rajaji Hospital. In out study, the commonest cause of uveitis was idiopathic followed by tuberculosis. There was a male preponderance. This may be due to the fact that males tend to seek more medical care, as they are wage earners in a developing country. Acute uveitis was the common presentation. Anterior uveitis was commoner. Majority of the patients were in the economically productive age group of 31-50 years. So visual loss made socio economic impact on the community. The common complications of uveitis were cystoid macular edema, cataract and a combination of these both. The most common cause of visual loss in uveitis patients were cystoid macular edema. Male patients with uveitis had a higher risk of visual loss. Pan uveitis had the worst prognosis of vision. Bilateral chronic visual loss usually result in significant permanent visual damage

A rare case of cutaneous granular cell tumour

Granular cell tumors are uncommon tumors of uncertain etiology. It accounts for approximately 0.5% of all soft tissue tumors. However, the involvement of skin is rare. Only few cases of cutaneous granular cell tumor is reported till date. Here, we present a case of cutaneous granular cell tumor in a 48 years female patient

Adrenal cyst – a case report

Adrenal cysts are classified as true cysts and pseudocysts. They are asymptomatic and an incidental finding in computed tomography and magnetic resonance imaging. True cysts have a definite lining, whereas pseudocysts lack a lining. Pseudocysts can be either hemorrhagic, parasitic or cystic degeneration of a malignant primary or metastatic tumor. We report a case of adrenal pseudocyst in a 5 year old child