Space Exploration: Where We Have Been, Where We Are and Where We Are Going: A Human Perspective

NASA is moving forward towards the agency's new vision for space exploration in the 21st Century encompassing a broad range of human and robotic missions including missions to Moon, Mars and beyond. Exposure from the hazards of severe space radiation in deep space long duration missions is the show stopper. Langley has developed state-of-the-art radiation protection and shielding technology for space missions. The payload penalty demands a very stringent requirement on the design of the spacecrafts for human deep space missions. The exploration beyond low Earth orbit (LEO) to enable routine access to more interesting regions of space will require protection from the hazards of the accumulated exposures of space radiation, Galactic Cosmic Rays (GCR) and Solar Particle Events (SPE), and minimizing the production of secondary radiation is a great advantage. The better understanding of radiation environment (GCR & SPE) and their interaction is a key to the success of the program due to the vital role and importance of cosmic rays for space missions

Determination of the presence of metabolic syndrome in patients of erectile dysfunction and assess correlation of its components with erectile dysfunction in a tertiary care hospital in central India

Background: Erectile dysfunction (ED) is a common medical condition that affects approximately 100 million men worldwide and is currently recognized as a major public health problem. Metabolic syndrome (Met S) is a complex entity consisting of multiple interrelated factors including insulin resistance, central adiposity, dyslipidaemia, endothelial dysfunction and atherosclerotic disease, low-grade inflammation, and in males, low testosterone levels. we aimed to investigate the relationship between metabolic syndrome and ED presence and severity.Methods: Patient who came to urology OPD with c/o of ED and were evaluated for it with physical examination, questionnaire, investigations>after confirmation of ED were evaluated for presence of metabolic syndrome and its individual componentsResults: Out of these 202 patients, 98 patients were found to have metabolic syndrome. The mean age of participating patients in this study was 47.2±5.6 years. Metabolic syndrome was diagnosed in 98 (34.78%) of 202 patients. Statistically significant association was found between ED and metabolic syndrome, waist circumference and fasting blood glucose (p<0.001 with each parameter). We also found a significant correlation between hypertension and ED but no significant correlation with triglyceride levels or HDL levels.Conclusions: ED is strongly associated with metabolic syndrome and the efforts for treatment of erectile dysfunction must be made in the context of metabolic syndrome and its constituents with a low threshold to diagnose the cardiovascular disease

Solution of Second Order Nonlinear Singular Value problems

In this paper an endeavor has been put forward to finding a solution of singular nonlinear boundary value problems related to differential equations of second order by Taylor’s series method through basic recursive   relations of its coefficients exhibiting a sequential spectrums. Keywords: Singular boundary value problems, He’s variational iteration method, Homotopy perturbation method, analytic solutio