Acute Compartment Syndrome of the Extremities and Paraspinal Muscles

Acute compartment syndrome (ACS) occurs when the pressure within the closed osteo-fascial compartment raises above perfusion pressure leading to irreversible tissue ischemia and necrosis. Any closed compartment in the body can be affected by ACS. The leg is the commonest site. Trauma is the common cause of compartment syndrome in young patients. In older patients, medical causes can cause it. The diagnosis in a conscious patient can be made based on clinical features. Pain out of proportion to the injury is the most important symptom. Exacerbation of pain on stretching the affected muscles and paresthesia are the common signs. Compartment pressure measurement is important for the diagnosis in unconscious and uncooperative patients. The treatment of established ACS is emergency fasciotomy. Untreated compartment syndrome can lead to neurovascular injuries and muscle contractures. In this chapter, we will see the etiologies, clinical features, investigations, and management of acute compartment syndrome of the extremities and the paraspinal region

Intermittent Computing: Challenges and Opportunities

The maturation of energy-harvesting technology and ultra-low-power computer systems has led to the advent of intermittently-powered, batteryless devices that operate entirely using energy extracted from their environment. Intermittently operating devices present a rich vein of programming languages research challenges and the purpose of this paper is to illustrate these challenges to the PL research community. To provide depth, this paper includes a survey of the hardware and software design space of intermittent computing platforms. On the foundation of these research challenges and the state of the art in intermittent hardware and software, this paper describes several future PL research directions, emphasizing a connection between intermittence, distributed computing, energy-aware programming and compilation, and approximate computing. We illustrate these connections with a discussion of our ongoing work on programming for intermittence, and on building and simulating intermittent distributed systems

Thermal modeling of lithium ion batteries for temperature rise predictions in hybrid vehicle application

In order to develop a hybrid vehicle with lithium ion battery packs, it is necessary to understand the thermal behaviour of the lithium ion batteries used. This paper focuses on predicting the temperature rise of lithium ion batteries during a drive cycle in hybrid two wheeler applications. To predict the rise in temperature, a model is developed in Simulink, parameterized using the empirical parameters. The model is based on the Joule heating effect and heat capacity equation while considering the variation of internal resistance with respect to ambient temperature of operation, state of charge and C rate of operation. The internal resistance is measured by parameter evaluation testing through the pulse power characterisation method. To validate the Simulink model, the lithium ion batteries are tested on standard drive cycles and constant current discharges, and the rise in temperature is measured. The accuracy of the Simulink model was found to be ± 2.2°C, which is acceptable for this study and comparable to the other available models in the literature

Cyclic Symmetry of Riemann Tensor in Fuzzy Graph Theory

In this paper, we define a graph-theoretic analog for the Riemann tensor and analyze properties of the cyclic symmetry. We have developed a fuzzy graph-theoretic analog of the Riemann tensor and have analyzed its properties. We have also shown how the fuzzy analog satisfies the properties of the 6X6 matrix of the Riemann tensor by expressing it as a union of the fuzzy complete graph formed by the permuting vertex set and a Levi-Civita graph analog. We have concluded the paper with a brief discussion on the similarities between the properties of the fuzzy graphical analog and the Riemann tensor and how it can be a plausible analogous model for the Petrov-Penrose classification.Comment: 12 pages, 1 figur

Isolation and screening of proteolytic bacteria from freshwater fish Cyprinus carpio

The present study was undertaken to isolate and characterize the protease producing potent bacteria from gastro intestinal tract of the freshwater fish Cyprinus carpio. The protease producer was characterized as Bacillus sp. morphologically and biochemically. The optimization studies for growth and proteases production of the isolate Bacillus sp. was carried out. The optimum temperature for the isolated Bacillus sp. was 350C but the optimum temperature for the protease production was 450C, the optimum pH was 7.0 in which the isolate produced 18 mMol/ml and showed a remarkable number of Colony Forming Unit. Hence, it was focused to study the intestinal Bacillus sp. in freshwater fish and its protease enzyme.&nbsp

Cellulosic fiber based hybrid composites: A comparative investigation into their structurally influencing mechanical properties

This paper focuses on hybrid and twisted hybrid Indian mallow/roselle cellulosic fiber yarn mat reinforced polyester composites and effects of their wood sawdust filler. The composite materials were fabricated using compression molding technique. There were four different combinations of hybrid yarn mat composite samples used, while the twisted hybrids were six. An evaluation of the hybrid and twisted hybrid mechanical properties for the single and double layer cases of the yarn mat was done with and without wood sawdust filler effects. The samples were tested at both warp and weft directions. From the results obtained at warp direction, it was observed that for the hybrid double layer case, longitudinal yarn mat with wood sawdust (filler) composite sample exhibited better tensile, impact and flexural strength properties in comparison with other related composites of hybrid type reported in literature. Moreover, the modified twisted hybrid double layer composites with longitudinal yarn mat and wood sawdust filler sample recorded significantly greater improvement on the mechanical properties at warp direction, when compared with the hybrid double layer longitudinal yarn mat composites with wood sawdust filler and other reported similar hybrid composite materials. Scanning electron microscopy (SEM) technique was utilized to evaluate morphological internal damage (cracks) and fractured surfaces of the various tested composite samples. Based on their mechanical performances and for further practical evidence, these two types of eco-composites were used to effectively fabricate tri-wheeler auto-wheel hubs and ceiling fan blades, as applicable to automobile and electronics industries, respectively.Peer reviewedFinal Accepted Versio