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降低浸水废液中总固体不溶物山羊皮的有效防腐
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作者 J Kanagaraj T P Sastry +1 位作者 C Rose 王亚娟 《中国皮革》 CAS 北大核心 2010年第1期52-56,共5页
制革中用到的原料皮多为含水70%的蛋白质,极易受微生物的影响,因此转变成革前原料皮的防腐是必要的。传统防腐方法现仍在广泛使用,但是由于该过程使用的NaCl量高达40%~50%,产生大量的污染主要以总固体不溶物TDS、氯化物形式存... 制革中用到的原料皮多为含水70%的蛋白质,极易受微生物的影响,因此转变成革前原料皮的防腐是必要的。传统防腐方法现仍在广泛使用,但是由于该过程使用的NaCl量高达40%~50%,产生大量的污染主要以总固体不溶物TDS、氯化物形式存在。因此化学家们基于降低污染为出发点对防腐方法做了大量研究,本文研究了少盐(5%中性盐及焦亚硫酸钠混合物)、无盐(仅用焦亚硫酸钠)防腐体系,从TDS减少量、微生物污染控制方面研究了生皮的物理、生化、微生物、热力学特征并比较了各类防腐方法制备的成革性能。 展开更多
关键词 原料 无盐少盐防腐皮 焦亚硫酸钠(SMBS)防腐
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E-voting system using cloud-based hybrid blockchain technology
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作者 Beulah Jayakumari S Lilly Sheeba +4 位作者 Maya Eapen Jani Anbarasi Vinayakumar Ravi A.Suganya Malathy Jawahar 《Journal of Safety Science and Resilience》 EI CSCD 2024年第1期102-109,共8页
With the invention of Internet-enabled devices,cloud and blockchain-based technologies,an online voting system can smoothly carry out election processes.During pandemic situations,citizens tend to develop panic about ... With the invention of Internet-enabled devices,cloud and blockchain-based technologies,an online voting system can smoothly carry out election processes.During pandemic situations,citizens tend to develop panic about mass gatherings,which may influence the decrease in the number of votes.This urges a reliable,flexible,transparent,secure,and cost-effective voting system.The proposed online voting system using cloud-based hybrid blockchain technology eradicates the flaws that persist in the existing voting system,and it is carried out in three phases:the registration phase,vote casting phase and vote counting phase.A timestamp-based authentication protocol with digital signature validates voters and candidates during the registration and vote casting phases.Using smart contracts,third-party interventions are eliminated,and the transactions are secured in the blockchain network.Finally,to provide accurate voting results,the practical Byzantine fault tolerance(PBFT)consensus mechanism is adopted to ensure that the vote has not been modified or corrupted.Hence,the overall performance of the proposed system is significantly better than that of the existing system.Further performance was analyzed based on authentication delay,vote alteration,response time,and latency. 展开更多
关键词 E-VOTING CLOUD Blockchain Smart contract Consensus mechanism
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