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2009'全国可再生能源—生物质能利用技术交流研讨会

作者： Luqman Chuah Abdullah mohd shahwahid b hj othman H'ng Paik San Institute of Tropical Forestry and Forest Product University of Putra Malaysia

Current energy evaluation focuses on the substitution of non renewable resources mainly fossil fuels but it lacks in justification that how efficient and sustainable the so-called renewable energy will *** gap is how much will it be more efficient by using renewable feedstock and renewable technology than using the traditional feedstock and traditional *** paper gives the thermodynamic analysis by using methane gas through combustion and gasification to find out the exergy balance under different temperature and *** this way,a clearer mind of how much energy efficiency is by using gasification and combustion can be *** is found that the higher temperature isobaricly the higher thermal efficiency and the higher pressure isothermally the higher thermal *** is also found that the exergy out of the gasification is higher than that *** is mostly contributed to the formation of carbon monoxide and hydrogen in the gasification stream.

关键词： energy evaluation thermodynamic exergy balance thermal efficiency

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comparison between tocotrienol and omeprazole on gastric growth factors in stress-exposed rats

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World Journal of Gastroenterology 2017年第32期23卷 5887-5894页

作者： mohd Fahami Nur Azlina hj mohd Saad Qodriyah Kien Hui Chua Yusof Kamisah Department of Pharmacology Faculty of MedicineUniversiti Kebangsaan Malaysia Department of Physiology Faculty of MedicineUniversiti Kebangsaan Malaysia

AIM To investigate and compare the effects of tocotrienol and omeprazole on gastric growth factors in rats exposed to water-immersion restraint stress(WIRS).METHODS Twenty-eight male Wistar rats were randomly assigned to four groups of seven rats. The two control groups were administered vitamin-free palm oil(vehicle) and the two treatment groups were given omeprazole(20 mg/kg) or tocotrienol(60 mg/kg) by oral gavage. After 28 d of treatment, rats from one control group and both treated groups were subjected to WIRS one time for 3.5 h. Gastric lesions were measured and gastric tissues were obtained to measure vascular endothelial growth factor(VEGF), epidermal growth factor(EGF), basic fibroblast growth factor(b FGF), and transforming growth factor-alpha(TGF-α) m RNA expression. RESULTS Rats exposed to WIRS for 3.5 h demonstrated the presence of considerable ulcers in the form of gastric erosion. The lesion index in the stressed control(S) group was increased(P b FGF(P both treatment agents exerted similar ulcer reducing ability, only treatment with tocotrienol led to increased expression of VEGF(P = 0.008), b FGF(P = 0.001) and TGF-α(P = 0.002) m *** Tocotrienol provides gastroprotective effects in WIRSinduced ulcers. Compared to omeprazole, tocotrienol exerts a similar protective effect, albeit through multiple mechanisms of protection, particularly through up-regulation of growth factors that assist in repair of gastric tissue injuries.

关键词： Tocotrienol Omeprazole Restraint-stress Gastric ulcers Growth factors

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