448 research outputs found
Ultrasonic Analysis in the Ternary Mixtures of 1,4 Dioxane + Carbon Tetrachloride + 1-Butanol
Microbial prevalence and their antibiotic susceptibility pattern in diabetic infections
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An interesting case of early onset of cerebral edemia during diabetic ketoacidosis treatment - a case Report
A young girl with type 1 diabetes presented with diabetic ketoacidosis due to missing of insulin following a respiratory tract infection. Within the first hour of starting intravenous fluids and insulin she developed cerebral edema. This case is being reported because of the unusual presentation of early onset of cerebral edema in the management of DKA and to emphasize the importance of recognizing this complication early as it helped to save this patient
Extraction and Physico-Chemical Characterization of Pineapple Crown Leaf Fibers (PCLF)
Apart from the widely discussed pineapple leaf fibers, normally referred to as PALF, fibers from other parts of the plant also exist, particularly those in the fruit crown, which are known as pineapple crown leaf fibers (PCLF). In this work, PCLF were characterized using thermogravimetric analysis (TGA), Fourier transform IR spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The results indicated that the properties of PCLF do not greatly differ from those observed for PALF. In particular, a cellulose content of over 67% was observed, with approximately 76% crystallinity. The main degradation phenomena of the fibers took place between 230 and 380 degrees C, peaking at 324 degrees C, which is in line with observations in other fibers which have similar cellulose and crystalline contents. There was 13.4% residue at 680 degrees C. Bare mechanical retting of PCLF, although not allowing a full and thorough degumming, which would only be achieved through more aggressive chemical treatment, enabled aspect ratios of over 10(3) to be obtained. This indicates some potential for their application as short fibers in composites. In this respect, the considerable roughness of PCLF when compared to other leaf-extracted fibers, and in particular when compared to PALF, could suggest an ability to obtain a sufficiently sound fiber-matrix interface
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