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Water splitting by Sulfur-Iodine (S-I) cycle is one of the promising thermochemical processes for hydrogen production due to its high efficiency. The decomposition of H 2 SO 4 to produce SO 2 is the reaction with the highest energy demand in the S-I cycle and it shows a large kinetic barrier. Sulfuric acid is highly corrosive and its endothermic decomposition needs elevated temperatures ([800°C). Henceforth, before the scale-up of the process plant there is a need to explore various materials of construction under very harsh acidic environments and phase changing conditions. Corrosion studies on some of the possible materials of construction (SS-304, SS-310, SS-316, Inconel-800, Alloy-20, Inconel-600, Incoloy-800H, Hastelloy C-276) were performed in detail and the most corrosion resistant material is suggested for the construction of sulfuric acid decomposition unit. The studies were performed at low temperatures (60°C and 120°C) as well as at high temperatures (700°C, 800°C and 900°C). The corrosion rates were determined using weight loss method at low as well as high temperature and by using electrochemical method at low temperature (80°C). The phase changing condition was more severe and resulted in higher corrosion rate. Hastelloy C-276 showed the least corrosion rate.

Sulfur–Iodine (S–I) thermochemical water–splitting cycle is one of the potential ways to produce hydrogen at large scale. CuFe2 O4 was dispersed over silica modified or treated β–SiC and untreated β–SiC...

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Background: Dental trauma is one of the main causes of loss of teeth in children. Dental trauma is a situation in which the patient is not only affected physically, but socially or psychologically also. Treatment of fractured teeth, particularly in young patients, is further complicated by the often difcult but essential procedure. Advances in adhesive dentistry have enabled dentists to use the patient's own fragment to restore the fractured tooth. Reattachment is such an ultraconservative technique that it provides safe, quick, and aesthetically please results. In Method: the rst case, the cervical root fracture in 11 with open apex was treated by root canal treatment followed by bio-dentine apical plug and then with the help of bre post, the tooth fractured fragment were reattached. In the second case, a cervical root fracture in 11 with closed apex was treated by root canal treatment followed by reattachment of the fragment by bre post. Results: The patient was reevaluated in the subsequent follow-up, the patient was asymptomatic with favourable soft tissue healing and good aesthetics. This case report includes proper history taking, diagnosi Conclusion: s, and treatment of cervical root fracture by fragment reattachment to educate the population that reattachment is an inexpensive treatment option for the patient with a positive emotional and psychosocial response.