A 42 year old male presented with swelling in the right posterior cervical region for a period of 2 months. Palpation revealed a soft, non tender, mobile swelling measuring 2 x 1 cms. An elective excision biopsy was performed. Gross examination showed a yellow to pale brown soft mass. On microscopy, a well circumscribed tumour composed of two populations of cells(uni-vacuolated white adipocytes...

A polyhedral terrain is the graph of a continuous piecewise linear function defined over the triangles of a triangulation in the xy-plane. Two points on or above a terrain are visible to each other if the line-of-sight does not intersect the space below the terrain. In this paper, we look at three related visibility problems in terrains. Suppose we are given a terrain T with n triangles and two...

Electrical stimulation of fibers of passage through the fastigial nucleus increases arterial pressure. To identify nuclei that may project through the pressor region of the fastigial nucleus, we injected the retrograde tracer fast blue unilaterally at confirmed pressor sites in the nucleus. In seven rats, we found dense fluorescent labeling bilaterally in the external cuneate, lateral reticular...

Satellite observation of Earth's atmosphere in the millimetre and sub-millimetre wavelength region is complementary to those in the visible and infrared spectral region. The emission and opacity of the atmosphere, and scattering by ice particles are all exploited for sensing various layers of the atmosphere in terms of water vapour content, temperature, molecular composition, precipitating wate...

We gave atropine intravenously to autonomically decentralized, open-chest, anesthetized dogs and stimulated the discrete intracardiac sympathetic nerve fibers to the sinoatrial (SA) (SAS stimulation) or atrioventricular (AV) (AVS stimulation) nodal region. A brief burst of neural stimuli was delivered during each cardiac cycle. SAS stimulation consistently decreased the atrial cycle length but ...

In this paper, we have proposed a numerical method for singularly perturbed  fourth order ordinary differential equations of convection-diffusion type. The numerical method combines boundary value technique, asymptotic expansion approximation, shooting method and  finite difference method. In order to get a numerical solution for the derivative of the solution, the given interval is divided  in...

background: the hepatic secretion of apolipoprotein b (apob), containing lipoproteins, is known to be regulated by insulin, and the overproduction of these atherogenic lipoproteins occurs in insulin-resistant states. protein tyrosine phosphatase 1b (ptp-1b) is a key regulator of hepatic insulin signaling and is also upregulated in insulin resistance. we aimed to investigate the role of ptp-1b i...

background: in the present study, a pcr-rflp based molecular technique was designed to rapid identification of der­matophytes in clinical specimens. skin scrapings obtained from human cases suspected to dermatophytosis were studied in or­der to identify involved etiological fungi. methods: in this experimental study, the specimens (skin scrapings) of patients referred to mycology department of ...

background systems thinking (st) has recently been promoted as an important approach to health systems strengthening. however, st is not common practice, particularly in low- and middle-income countries (lmics). this paper seeks to explore the barriers that may hinder its application in the eastern mediterranean region (emr) and possible strategies to mitigate them.   methods a survey consistin...

phase inversion in liquid-liquid dispersions corresponds to the transitional boundary between oil-in-aqueous dispersion and aqueous-in-oil dispersion. a theoretical model based on simple assumptions was proposed to predict phase inversion point, ambivalence region and the hysteresis effect of inversion. experimental data from the literature were used to validate the model and results were compa...