Removal of crystal violate dye from aqueous solution by adsorption on mixture of activated carbon: A kinetic & equilibrium study

 The kinetics and equilibrium study of crystal violate dye adsorption on mixture of activated carbon (PWCAC) and (CSAC) was studied. The use of low cost ecofriendly adsorbent has been investigated as an ideal alternative to the current expensive methods of removing of dye from aqueous solution. This study was done by batch adsorption techniques. The quantitative adsorption kinetic and equilibrium parameter for crystal violate dye were studied using uv-visible adsorption spectroscopy. The effect of initial dye concentration, pH,adsorbent dose, temperature, particle size were determined to find the optimal condition for adsorption. The percentage removal of dye was found to be most effective at pH10and contact time 120 min and at an adsorbent dose 4 g/L of dye. The study indicates that’s, the percentage removal of dye increases with increasing initial dye concentration, adsorption dose and contact time and attains equilibrium at optimum conditions.The equilibrium study of adsorption of crystal violate dye on to mixture of activated carbon was investigated using pseudo first order and pseudo second order kinetic models. The adsorption kinetics was found to follow pseudo second order kinetic model. The equilibrium adsorption data of crystal violate dye on PWCAC and CSAC mixture was analyzed by Langmuir and Freundlich adsorption model. The results show that the Langmuir model provides the best correlation

Mechanical and Tribological Behaviour of Treated and Untreated Moringa Oleifera Pods Fiber Reinforced Epoxy Polymer Composite for Packaging Applications

Researchers now focus on the use of natural fiber polymer composites materials for packing applications. This attention is due to their low cost and renewable characteristics. Fabrication of composites with the use of renewable resources has many benefits of alternating from an appropriate management and reduction in industrial wastages, ecofriendly behaviour to cost effectiveness. The artificial fibers in packing industries can be replaced by natural fibers in the areas where stiffness and high strength are not the primary requirement. In the last decade the use of Natural fibers in the place of artificial fibers for reinforcements in epoxy resin matrix ratio has been gaining momentum. In this work, the different quantity of treated and untreated Moringa pods Oleifera fiber were reinforced LV5012 CNSL hardener with LY556 Epoxy by using hand lay-up technique. Mechanical behaviour (tensile, flexural and impact), Tribological and water absorption behaviour are evaluated. The microstructural analysis of fabricated composite was done by using Scanning Electron Microscope (SEM) to analysis the fiber strength, internal fiber failure, cracks and interfacial properties of the fractured surfaces. Based on the results, treated MOPF polymer composites have found better mechanical, wear and water absorption properties to be used for packaging applications compared with untreated MOPF polymer composites

Development of gastro retentive drug delivery system of cephalexin by using factorial design

The objective of this research work was to formulate and optimize the floating drug delivery system containing cephalexin using 23 factorial design. Floating tablets were prepared by direct compression method incorporating HPMC K4M, xanthan gum, guar gum, sodium bicarbonate and tartaric acid as gas generating agent. The influence of independent variables like, polymer: polymer ratio, polymer type and tartaric acid on floating lag time and cephalexin release profile were studied. The diffusion exponent (n) of Krosmeyer Peppas for optimized formulation was found to be 0.635 which indicates the mechanism of drug release was anomalous transport. Floating lag time of optimized formulation was 1.50 min and remained buoyant for 24 hrs. Optimized formulation was checked for stability at 40ºC / 75% RH which was found to be stable. Scanning electron microscopy study revealed gel formation. FT-IR studies revealed that there was no chemical interaction between cephalexin and other excipients

Розробка ринково-орієнтованих методів вартісної оцінки об’єктів інтелектуальної власності

Розроблено методичні положення визначення вартості інтелектуальних новацій на основі комбінованого середньовагового методу з використанням їх загальних та специфічних особливостей.Methodical positions of determination of cost of intellectual innovations are developed on the basis of the combined middling gravimetric method with the use of their general and specific features

Acute pulmonary thromboembolism: Epidemiology, predictors, and long-term outcome – A single center experience

Introduction: Acute pulmonary thromboembolism (PTE) is a life-threatening disease. Mortality in PTE still remains very high in spite of progress in diagnostic tools. Mortality rate is about 30% in patients with unrecognized acute PTE. Methods: It is a single center observational study of 31 consecutive patients who were hospitalized in the Department of Cardiology at MS Ramaiah Memorial hospital between January 1, 2010 and June 2015. All the patients confirmed with diagnosis of acute PTE by CT scan (either HRCT or CTPA) were included in the study. Following relevant investigations chosen patients were risk stratified as per standard guidelines into massive, sub massive or low risk and treated accordingly. The included patients were followed up for a period of 1 year with 2D-echocardiogram and other relevant investigations for comparison to assess improvement. Mortality due to either acute PTE or other causes was noted in the study. Results: Of the 31 patients enrolled in our study, 71% (n = 22) of the patients belonged to the age range 20–50 years with those in the age group 31–40 years comprising 39% (n = 12) of the total. Elderly people over 65 years of age comprised only 19% (n = 6) of the total number of patients. Dyslipidemia, prolonged immobilization, deep vein thrombosis, post-operative state, malignancy and post-partum period were the commonly reported risk factors. We thrombolysed a total of 18 (58%) patients with massive and submassive PTE, of which 12 (39%) received tenecteplase and 6 patients received streptokinase (19%). Three (9%) patients required repeat thrombolysis with streptokinase due to failed thrombolytic therapy with tenecteplase. Conclusions: Our study reported higher incidence of acute PTE in the middle age group population. Prevalence of dyslipidemia was high in this cohort of patients studied although the exact association of it in APE could not be determined. Thrombolytic therapy can be considered for patients with both massive and submassive pulmonary thromboembolism. Repeat thrombolysis can be considered in case one thrombolytic agent failed to give the desirable results