1,200 research outputs found

    Labour justice and sustainable tourism: the centrality of equity as a sustainability principle

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    What we value is intricately linked to our morality and our ethics, whether personal or corporate. Sustainability is essentially a statement of morality, embeddlng as it does the notion of inter- and intra-generational equity, This includes, among other things, social justice, The values underlying tourism development are dominated by the corporate expedient of profit and by the State concern for wealth generation, irrespective of the impacts on workers

    Experimental study of a compartmented fluidized bed gasifier for fuel gas production from oil palm shell biomass

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    Both experimental study of pilot plant scale cold flow model and pilot plant performance testing were carried out in this research with particular reference to palm shell as a biomass feedstock. The reactor was based on the concept of compartmented fluidized bed gasifier (CFBG). Sand was used as second fluidizing material.From the cold flow model, the single component (sand) system characteristic fluidization velocities for the gasifier are larger than those observed in the combustor. These differences can be minimized by utilizing larger sand size. The existing correlations are modified for the sand. For the binary mixture, the characteristic fluidization velocities showed the tendency to increase with the increase in the palm shell size and weight percent. The concept of critical loading is introduced to characterize the palm shell content in the binary mixture where the characteristic fluidization velocities for the binary mixture are determined principally by the sand. The critical loading increases with the sand size, but decreases with the increase of palm shell size. The correlations developed for the sand can be used for the binary mixture within the critical loading.Despite of the local variation on the palm shell vertical and lateral distribution, the overall good mixing quality can be established in both the compartments. The overall mixing quality is enhanced with the decrease in the palm shell size and the increase in the palm shell weight percent. Bigger bed diameter also improves the overall mixing quality while bed height did not contribute significantly.Solid circulation rate (SCR) increases with the increase in the bed height while the main bed aeration does not affect the SCR. Based on statistical approach, the V-valve and riser aerations are simultaneously adjusted to determine the optimum SCR. Optimum SCR value increases with the increase in the sand size.The pilot plant designed by using the findings from the cold flow model has demonstrated CFBG as a prospective technology for palm shell gasification for the production of medium calorific value fuel gas. The conceptual model of the palm shell gasification process was proposed

    Effective Car Security System

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    The aim for this project is to design an effective and reliable car security system, "arjacking is not something strange and the amount of vehicles reported stolen has ncreased sharply over the years. The security system is designed specifically to cater for Jroton cars, which are prone to carjacking, due to its popularity and quantity. This system argets the moderate earner as main customer and offers quite a reliable way to reduce >arked cars from being stolen. Thefocus of thisproject is on improving the current security system available in Proton Car. The circuit design part focuses on the switching aspects, specially to activate the voice alarm system and to send short message service (SMS) to ilert the car owner. Selfdiagnose system is included to identify the car problems if there is iny fault detected. The features added although are based onProton car module; however, he features can be added in other types of cars available in the market as well. The end •esult of this project is a working prototype of the security system, where a user will •eceive SMS whenever the car alarm system is being triggered. The overall system successfully reduces the chance of a false alarm situation to make the car security system tiore effective and reduces carelessness committed by owners in handlingtheir cars

    Strategies to increase the resectability of hepatocellular carcinoma

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    © 2015 Baishideng Publishing Group Inc. Hepatocellular carcinoma (HCC) is best treated by liver transplantation, but the applicability of transplantation is greatly limited. Tumor resection in partial hepatectomy is hence resorted to. However, in most parts of the world, only 20%-30% of HCCs are resectable. The main reason for such a low resectability is a future liver remnant too small to be sufficient for the patient. To allow more HCC patients to undergo curative hepatectomy, a variety of ways have been developed to increase the resectability of HCC, mainly ways to increase the future liver remnants in patients through hypertrophy. They include portal vein embolization, sequential transarterial chemoembolization and portal vein embolization, staged hepatectomy, two-staged hepatectomy with portal vein ligation, and Associating Liver Partition and Portal Vein Ligation in Staged Hepatectomy. Herein we review, describe and evaluate these different ways, ways that can be life-saving.published_or_final_versio

    Advanced in Hepatic Surgery

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    Release of enzymes from damaged myocardium

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    This thesis is concerned with the application and development of serum enzyme tests in the diagnosis of myocardial infarction. Two aspects of the problem have been selected for detailed study: firstly, the measurement of the activity of the MB isoenzyme of creatine kinase and, secondly, the release of mitochondrial enzymes in myocardial infarction. In addition, the biochemical properties of the MB isoenzyme have been compared with those of the MM isoenzyme of creatine kinase in an attempt to provide the basis of a simple test for the measurement of serum levels of the MB isoenzyme
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