Valve degradation detector

To determine corrosive degradation of valve while it is in service, detect changes in surface roughness or presence of corrosive layers at junction of poppet and seat by measuring temperature gradients created across junction by small heat source

Quadrotor Tour Guide

This poster describes an quadrotor built with projecting capabilities at the Robotics, Intelligent Sensing & Control (RISC) laboratory. A smart and autonomous quadrotor that can fly in a specified path. It has the ability to identify the QR code, scan it and pass the information to the android application. The android application will try to lookup the information related to the QR Code. And the projector mounted on the top of the drone will help in projecting the information

Nonlinear Evolutionary PDE-Based Refinement of Optical Flow

The goal of this paper is to propose two nonlinear variational models for obtaining a refined motion estimation from an image sequence. Both the proposed models can be considered as a part of a generalized framework for an accurate estimation of physics-based flow fields such as rotational and fluid flow. The first model is novel in the sense that it is divided into two phases: the first phase obtains a crude estimate of the optical flow and then the second phase refines this estimate using additional constraints. The correctness of this model is proved using an Evolutionary PDE approach. The second model achieves the same refinement as the first model, but in a standard manner, using a single functional. A special feature of our models is that they permit us to provide efficient numerical implementations through the first-order primaldual Chambolle-Pock scheme. Both the models are compared in the context of accurate estimation of angle by performing an anisotropic regularization of the divergence and curl of the flow respectively. We observe that, although both the models obtain the same level of accuracy, the two-phase model is more efficient. In fact, we empirically demonstrate that the single-phase and the two-phase models have convergence rates of order $O(1/N^2)$ and $O(1/N)$ respectively

Hydrous Titanium Oxide as a Concentrator for Trace Nuclides in Seawater

904-90

Intramural hemotoma presenting as acute coronary syndrome: The importance of intravascular ultrasound

Intramural hematoma in major coronary epicardial vessels is a rare cause of chest pain. Afflicted individuals may present with acute coronary syndrome (ACS) or even sudden cardiac death. Spontaneous, isolated intramural hematoma may occur in the absence of associated intimal dissection. In this situation, lesions may be angiographically indistinguishable from ruptured atherosclerotic plaque. Intravascular ultrasound is important in the accurate diagnosis of isolated intramural hematoma. Although coronary stenting may be required in the presence of ongoing ischemia, intramural hematoma may be successfully managed medically. We describe the case of a middle-aged woman who presented with ACS due to an intramural hematoma and discuss the diagnosis and management of this rare illness

Comparison of clinical and environmental isolates of Legionella pneumophila obtained in the UK over 19 years

ABSTRACTBetween January 1980 and December 1998, 3458 cases of Legionnaires’ disease were reported to the national surveillance scheme in England and Wales. Of these, 463 (13.4%) were reported as proven by culture and isolation of Legionella spp., with 96.3% being Legionella pneumophila. Serogroup (Sgp), monoclonal antibody (mAb) subgrouping and restriction fragment length polymorphism (RFLP) analysis data were obtained for 321 (69.3%) of these, of which 284 were classified as being unrelated to any other isolate in the study. Typing data were also available for 117 unrelated environmental isolates of L. pneumophila obtained from England and Wales, giving a total of 401 unrelated isolates in the study. Of the clinical isolates, 88.0% were Sgp1, compared with only 42.7% of environmental isolates (p <0.001); 79.6% of clinical isolates were subgrouped as mAb2+, compared with only 12.8% of environmental isolates (p <0.001). RFLP typing identified 67 types among the 401 isolates, with clinical isolates showing significantly less diversity than environmental isolates (index of diversity (IOD) 0.944 vs. 0.958; p <0.05), with three RFLP types (1, 5 and 14) accounting for 40.0% of all clinical isolates. Combining the phenotypic and genotypic data resulted in 173 distinct phenons, with clinical isolates showing significantly less diversity than environmental isolates (IOD 0.964 vs. 0.996; p <0.01). Three phenons accounted for 30% of all clinical isolates. These data strongly suggest that some strains of L. pneumophila are more likely to cause human infection than would be expected from their distribution in the environment

Anaesthetic challenges in carotid body tumour resection: a case report and review of literature

Carotid body tumour (CBT) is an extremely rare, non-chromaffin  paraganglioma arising from chemoreceptor cells at the carotid bifurcation. Reported incidence is 1-2 per 100,000. Surgical excision of the tumour, the definitive treatment, poses several anaesthetic challenges and a high incidence of perioperative morbidity and mortality (20-40%). Very few cases have been reported so far. We report the anaesthetic management of a case of CBT excision with a review of recent literature on the same