149 research outputs found
An Inventory Model for Deteriorating Items with Permissible Delay in Payment and Inflation Under Price Dependent Demand
No full textThe paper studies an inventory model for deteriorating items when demand for the item is dependent on the selling price. Shortages are allowed and backlogged, and price inflation is taken into consideration. Further, it is assumed that the supplier permits the inventory manager to settle his accounts within a given specified time period. Numerical examples are cited to illustrate the model and to study the sensitivity of the model to change in model parameters
Love wave propagation in a heterogeneous orthotropic layer under initial stress lying over an inhomogeneous half-space
No full textNovel Trends in The Development of Hydrogel from Plant Sources and Their Effect in Environment and Human Health: A Review
No full textIncreased demand for energy and the scarcity of fossil fuels has led to the search for an alternative source that is sustainable as well as environmentally friendly, has the potential to function similarly to conventional fuels, contributes to less air pollution, and utilizes the maximum number of available natural sources in order to reduce the cost of production while achieving a higher yield at the same time. One such popular alternative is biodiesel, a renewable, biodegradable, and portable fuel that is sulfur-free, has enough oxygen content, is less toxic, and has a comparatively easier manufacturing process. Biodiesel is produced through a Trans-esterification process that involves the conversion of triglycerides in the presence of a catalyst and alcohol producing mono alkyl ester of long-chain fatty acids, i.e., biodiesel, along with glycerol as a byproduct. Biodiesel can be produced from a versatile range of feed-stocks, from edible sources like Rapeseed oil, Peanut oil, Soybean oil, Sunflower oil, canola oil, Palm oil, etc. to non-edible tree-borne oilseeds such as Neem oil, Cottonseed oil, Castor oil, Jojoba oil, Ratanjyot, Mahua, etc. to even waste cooking oil, animal fat, and microalgal oil. Along with flexibility in feed-stocks, a variety of catalysts can also be used in the production of biodiesel via Transesterification. This study is an attempt to highlight the process of Transesterification, the impact of biodiesel on the environment and human healt
An Ordering Policy for Deteriorating Items with Hybrid Demand Under Permissible Delay in Payment and Price Inflation
No full text ABSTRACT: The paper studies an in ventory model for deteriorating items under price inflation and permissible delay in payment. The demand rate is assumed to be hybrid, which is observed for commodities like coffee, cotton, tin, copper, wristwatch, automobile, etc. The model is studied over a finite planning horizon with unequal cycle lengths. A solution procedure is indicated to determine the optimal number of replenishments, cycle times and optimal order quantities. </jats:p
The nucleation of self-poled electroactive β-phase in Eu3+ doped PVDF nanocomposite film for optoelectronic devices
No full textPre-heating in the framework of massive gravity
No full textAbstractIn this paper we propose a mechanism of natural pre-heating of our universe by introducing an inflaton field dependent mass term for the gravitational wave for a specific class of massive gravity theory. For any single field inflationary model, the inflaton must go through the oscillatory phase after the end of inflation. As has recently been pointed out, if the gravitational fluctuation has inflaton dependent mass term, there will be a resonant amplification of the amplitude of the gravitational wave during the oscillatory phase of inflaton. Because of this large enhancement of the amplitude of the gravitational wave due to parametric resonance, we show that universe can naturally go through the pre-reheated phase with minimally coupled matter field. Therefore, during the reheating phase, there is no need to introduce any arbitrary coupling between the matter field and the inflaton
Masterguide to Maity & Ghosh's integral calculus including differential equations
No full textPenned with utmost care for the undergraduate students of Mathematics of all major universities, this book can be treated as a remarkable combination of erudite scholarship and educational utility. Now Dr K C Pal, the author, known for his unique and student-friendly teaching methods, has come up with this invaluable text as a long-awaited extension of the original book
Colloidal silver nanoparticles prepared by UV-light induced citrate reduction technique for the quantitative detection of uric acid
No full textA randomized controlled open label comparative clinical study of cephalexin versus doxycycline in patients with acne vulgaris in a hospital based population of South India
No full textBackground: Oral antibiotics are frequently used for acne vulgaris. Cephalexin has documented some success against acne vulgaris in earlier studies. Here the efficacy and safety of Cephalexin have been compared against the standard therapy of Doxycyline.Methods: From September 2010 to June 2011, 100 patients of moderate Acne vulgaris were randomized into two groups to receive oral Doxycyline (100mg once daily) or Cephalexin (500mg thrice daily) in an open label manner for eight weeks. All participants were allowed to use topical 5%Benzoyl peroxide gel twice daily. Efficacy was measured in terms of reduction in the number of facial comedones and inflammatory lesions from baseline after eight weeks.Results: 44 patients from Cephalexin group and48 patients from Doxycyline group completed the study. Both drugs have significantly decreased comedone count as well as the inflammatory lesion count after eight weeks. However, Doxycycline appeared better in terms of Comedone count (14.5±3.07 versus 12.9±4.31, p=0.045) as well as inflammatory lesion count (8.64.1±2.14 versus 7.67±2.46, p=0.047) at the end. The total adverse event was slightly more with Cephalexin (6.81% versus 6.25%, p= 0.912), where Diarrhoea remained the commonest adverse effect (4.54%).Conclusions: Although for the first time oral Cephalexin has displayed efficacy against moderate acne vulgaris in a prospective clinical study, it appeared inferior to Doxycycline over eight weeks. Therefore, it becomes an option only when other oral antibiotics are contraindicated or not tolerated.</jats:p
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