Body Area Networks

Recent technological advances in integrated circuits, wireless networks, and physiological sensing have enabled miniature, lightweight, low power, intelligent monitoring devices to be integrated into a Body Area Network (BAN). This new type of technology hold much promise for future patient health monitoring. BANs promise inexpensive, unobtrusive, and unsupervised ambulatory monitoring during normal daily activities for long periods of time. However, in order for BANs to become ubiquitous and affordable, a number of challenging issues must be resolved, such as integration, standardisation, system design, customisation, security and privacy, and social issues. This paper presents an overview of many of these issues and indeed the background and rationale of body area networks

INFLUENCES OF SODIUM ARSENITE ON SOME BLOOD PARAMETERS IN Cyprinus Carpio EXPOSED TO ARSENIC

Abstract The present study was aimed to investigate the effects of sodium arsenite on biochemical and hematologic parameters in carp (Cyprinus carpio, Linnaeus 1758) after exposed to arsenic. In this study fish were exposed to 0.01 mg/L arsenic. Our results indicated that significant suppression in Granulocyte, erythrocyte, hemoglobin, hematocrit values were decreased due to oxidative toxicity of arsenic in experimental group while comparing with control group. In addition levels of leucocyte, agranulocyte, MCV (mean corpuscular volume), MCH (mean corpuscular hemoglobin) and MCHC (mean corpuscular hemoglobin concentration) increased in the arsenic group (P<0.05) and hematological functions of common carp blood, after being exposed to arsenic

Computational Fluid Dynamics Analysis Of Louver Fins With Different Configurations

Researches in heat transfer have been carried out over the previous several decades, leading to the development of the currently used heat transfer enhancement techniques. Louver fins are widely used in heat exchanger for automotive applications such as radiator, intercooler, condenser, heater core etc. This study presents numerical analysis of effect of various louver fin configurations on heat transfer rate. The three dimensional governing equations for fluid flow and heat transfer are solved using ANSYS Fluent 19.2., fin geometries are developed by using CATIA v5. Multiple fin geometry’s are included in this study for better understanding of the fin behavior

Studies on atmospheric gravity wave activity in the troposphere and lower stratosphere over a tropical station at Gadanki

MST radars are powerful tools to study the mesosphere, stratosphere and troposphere and have made considerable contributions to the studies of the dynamics of the upper, middle and lower atmosphere. Atmospheric gravity waves play a significant role in controlling middle and upper atmospheric dynamics. To date, frontal systems, convection, wind shear and topography have been thought to be the sources of gravity waves in the troposphere. All these studies pointed out that it is very essential to understand the generation, propagation and climatology of gravity waves. In this regard, several campaigns using Indian MST Radar observations have been carried out to explore the gravity wave activity over Gadanki in the troposphere and the lower stratosphere. The signatures of the gravity waves in the wind fields have been studied in four seasons viz., summer, monsoon, post-monsoon and winter. The large wind fluctuations were more prominent above 10 km during the summer and monsoon seasons. The wave periods are ranging from 10 min-175 min. The power spectral densities of gravity waves are found to be maximum in the stratospheric region. The vertical wavelength and the propagation direction of gravity waves were determined using hodograph analysis. The results show both down ward and upward propagating waves with a maximum vertical wave length of 3.3 km. The gravity wave associated momentum fluxes show that long period gravity waves carry more momentum flux than the short period waves and this is presented

Ficus racemosa Stem Bark Extract: A Potent Antioxidant and a Probable Natural Radioprotector

Ethanol extract (FRE) and water extract (FRW) of Ficus racemosa (family: Moraceae) were subjected to free radical scavenging both by steady state and time resolved methods such as nanosecond pulse radiolysis and stopped-flow spectrophotometric analyses. FRE exhibited significantly higher steady state antioxidant activity than FRW. FRE exhibited concentration dependent DPPH, ABTS•−, hydroxyl radical and superoxide radical scavenging and inhibition of lipid peroxidation with IC50 comparable with tested standard compounds. In vitro radioprotective potential of FRE was studied using micronucleus assay in irradiated Chinese hamster lung fibroblast cells (V79). Pretreatment with different doses of FRE 1h prior to 2 Gy γ-radiation resulted in a significant (P < 0.001) decrease in the percentage of micronucleated binuclear V79 cells. Maximum radioprotection was observed at 20 μg/ml of FRE. The radioprotection was found to be significant (P < 0.01) when cells were treated with optimum dose of FRE (20 μg/ml) 1 h prior to 0.5, 1, 2, 3 and 4 Gy γ-irradiation compared to the respective radiation controls. The cytokinesis-block proliferative index indicated that FRE does not alter radiation induced cell cycle delay. Based on all these results we conclude that the ethanol extract of F. racemosa acts as a potent antioxidant and a probable radioprotector

Intussusception due to colon carcinoma in a young man: An unusual presentation

Adult intussusception is a rare disease without classical symptoms. A delay in diagnosis may result in a fatal progression to complete bowel obstruction, ischemia, necrosis, and perforation. The association of a tumor with intussusception in young adults is rare. We report a case concerning a young male without a family history of bowel cancer presenting with a proximal ascending colon intussusception secondary to colonic carcinoma. This case puts insights on how intussusception and possible colon carcinoma must be included in the differential diagnosis even in young adults who have a persistent abdominal complaint. A high index of suspicion and an early computed tomography scan were required to prevent delayed diagnosis and the development of complications