Lossless compression of hyperspectral images

Band ordering and the prediction scheme are the two major aspects of hyperspectral imaging which have been studied to improve the performance of the compression system. In the prediction module, we propose spatio-spectral prediction methods. Two non-linear spectral prediction methods have been proposed in this thesis. NPHI (Non-linear Prediction for Hyperspectral Images) is based on a band look-ahead technique wherein a reference band is included in the prediction of pixels in the current band. The prediction technique estimates the variation between the contexts of the two bands to modify the weights computed in the reference band to predict the pixels in the current band. EPHI (Edge-based Prediction for Hyperspectral Images) is the modified NPHI technique wherein an edge-based analysis is used to classify the pixels into edges and non-edges in order to perform the prediction of the pixel in the current band. Three ordering methods have been proposed in this thesis. The first ordering method computes the local and global features in each band to group the bands. The bands in each group are ordered by estimating the compression ratios achieved between the entire band in the group and then ordering them using Kruskal\u27s algorithm. The other two methods of ordering compute the compression ratios between b-neighbors in performing the band ordering

MACROPHAGE TARGETING: A STRATEGY FOR LEISHMANIASIS SPECIFIC DELIVERY

Leishmaniasis is a vector-borne zoonotic infection caused by an obligate intra macrophage protozoan parasite ‘Leishmania'. Despite of a number of remedies available, leishmaniasis is still a speedy migrating and deadly infection due to the resistance of the parasite to the drugs as well as their toxicity. Hence, there is a need for targeted drug delivery system for enhancing the systematic effect of antileishmanial drugs. Although the number of antileishmanial drugs in a variety of dosage forms is available, there is an urgency to develop more efficient, cost-effective and safe therapy, which can be achieved by macrophage targeting utilizing passive (phagocytosis), and/or active (receptor mediated) strategies utilizing nano-formulations. Positive considerations of various factors like the enhanced permeation and retention (EPR) effect, size, and charge of nano-formulations can facilitate the passive targeting, and various receptors like lectin receptor, mannose receptor, mannosyl-fucosyl receptor, scavenger receptor, etc on the macrophage surface may play an important role in active drug targeting. Also, monoclonal antibody, interferon's, tufstin are other agents which have been broadly utilized for targeting

Systematics of alpha decay hindrance factors in doubly-even nuclei

304-307In present work, we have calculated the hindrance factors of 182 even-even alpha emitters using Preston’s formulation of alpha decay probabilities and presented HFs systematics of 1- and 3- states in reflection asymmetric even-even quadruple-octupole deformed nuclides (A~216-230). The calculated HFs of both 1- and 3- states decrease with reduction in neutron number and this decrease is attributed to onset of intrinsic reflection asymmetry. There is a trend reversal for 1- states at N=132 (218Ra) and N=134 (220Rn), which might be a possible indication of departure from static octupole deformation. Similarly, HFs systematics is discussed for 224-230Th and 232-236U isotopic chains along with 2+ states observed in daughter nuclei in N=132-146 isotonic chains

Prevalence of complications of Type 2 Diabetes Mellitus and its association with different risk factors in Urban Etawah, Uttar Pradesh

Background- India is experiencing a rapid health transition, with large and rising burdens of chronic diseases, which were estimated to account for 53% of all deaths in 2005. Earlier estimates projected that the number of deaths attributable to chronic diseases would rise from 3·78 million in 1990 (40·4% of all deaths) to 7·63 million in 2020 (66·7% of all deaths). Aims and Objectives- To find out the prevalence of Complications of Type 2 Diabetes Mellitus and its association with different risk factors in Urban Etawah (U.P.) including tobacco, alcohol, fatty meals and physical activity. Material and Methods- The present study is a community-based study performed among 400 participants using cluster sampling technique in the field practice area of Urban health training centre, Department of Community Medicine, UPUMS, Saifai, Etawah. The participants were interviewed using a pre-tested questionnaire using Diabetes Complication Index.  Results- Among the diabetics, the prevalence of coronary heart disease (CHD), peripheral vascular disease (PVD), cerebrovascular accidents (CVA), cataract, neuropathy and foot problems were 24%, 24%, 7%, 15.4%, 38%, 26% and 2% respectively. A statistically significant association was seen with fatty meals and complications. Conclusion - All the diabetic complications observed need to be addressed in prevention and control strategies in the study area. Heath screening camps will be organized for the people for awareness

Evaluation of the Antiasthmatic Activity of Methanolic Extract of Trigonella Foenum Graecum on Experimental Models of Bronchial Asthma

The present study deals with the phytochemical screening and evaluation of antiasthmatic activity of methanolic extract of Trigonella foenumgraecum on experimental models of bronchial asthma and anaphylaxis. The antiasthmatic activity was studied on histamine-induced bronchospasm in guinea pig (Dunkey-Hartley) for respiratory parameters such as maximum airflow, minimum airflow, tidal volume, respiratory rate, minute volume, specific airway resistance determination on double chambered whole body plethysmography on un-anesthetized guinea pigs, for mast cell degranulation by compound 48/80 (in vitro) was done using rat (Albino Wistar) peritoneal fluid. Trigonella foenum graecum treated result indicated significant protection against histamine-induced bronchospasm in guinea pigs at highest dose i.e. 400mg/kg. The bronchodilatory effect of Trigonella foenum graecum was found comparable to the protection offered by the standard drug Salbutamol on respiratory parameters in double chambered whole body plethysmography, Treatment with Trigonella foenum graecum at a dose of 400mg/kg showed a significant decrease in degranulation rate of actively and passively sensitized mast cells of sensitized rats when challenged with antigen. Trigonella foenum graecum. Possess significant anti-asthmatic activity due to its potential anti inflammatory, antioxidant and the antihistaminic activity, which reflects as anti-degranulating effect on mast cells and on respiratory parameters. Keywords: Trigonella foenum graecum; asthma; mast cell; compound 48/80; histamin