A – Chest radiograph of a patient with pneumonia showing bilateral, diffuse interstitial infiltrates B – Contrast enhanced computed tomographic (CT) scan of chest showing mediastinal lymphadenopathy in a patient with disseminated tuberculosis

<p><b>Copyright information:</b></p><p>Taken from "Spectrum of clinical disease in a series of 135 hospitalised HIV-infected patients from north India"</p><p>BMC Infectious Diseases 2004;4():52-52.</p><p>Published online 22 Nov 2004</p><p>PMCID:PMC535567.</p><p>Copyright © 2004 Sharma et al; licensee BioMed Central Ltd.</p> Typical central necrosis evident as low attenuation areas (arrows) is seen C – Contrast enhanced CT scan of brain showing ring enhancing lesions in the basal ganglia bilaterally (arrows). Serology was positive for toxoplasma infection D – Ophthalmoscopic image of a patient with cytomegalovirus retinitis E – Non-Hodgkin's lymphoma in a HIV-infected lady presenting as unilateral maxillary swelling F – Contrast enhanced CT scan of abdomen reveals an oedematous and enlarged pancreas (asterisk) suggestive of acute pancreatitis. The patient was on didanosine and improved following withdrawal of the same and supportive treatment

Spectrum of clinical disease in a series of 135 hospitalised HIV-infected patients from north India-0

<p><b>Copyright information:</b></p><p>Taken from "Spectrum of clinical disease in a series of 135 hospitalised HIV-infected patients from north India"</p><p>BMC Infectious Diseases 2004;4():52-52.</p><p>Published online 22 Nov 2004</p><p>PMCID:PMC535567.</p><p>Copyright © 2004 Sharma et al; licensee BioMed Central Ltd.</p

A study of empyema thoracis and role of intrapleural streptokinase in its management-0

<p><b>Copyright information:</b></p><p>Taken from "A study of empyema thoracis and role of intrapleural streptokinase in its management"</p><p>BMC Infectious Diseases 2004;4():19-19.</p><p>Published online 29 Jun 2004</p><p>PMCID:PMC459221.</p><p>Copyright © 2004 Banga et al; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original URL.</p>IPSTK) instillation for the two groups, ↓ :time of starting streptokinase instillatio

Freight train air brake models

This paper is an outcome of an international collaborative research initiative. Researchers from 24 institutions across 12 countries were invited to discuss the state-of-the-art in railway train air brake modelling with an emphasis on freight rains. Discussed models are classified as empirical, fluid dynamics and fluid-empirical dynamics models. Empirical models are widely used, and advanced versions have been used for train dynamics simulations. Fluid dynamics models are better models to study brake system behaviour but are more complex and slower in computation. Fluid-empirical dynamics models combine fluid dynamics brake pipe models and empirical brake valve models. They are a balance of model fidelity and computational speeds. Depending on research objectives, detailed models of brake rigging, friction blocks and wheel-rail adhesion are also available. To spark new ideas and more research in this field, the challenges and research gaps in air brake modelling are discussed.</p