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目前,溶液浇铸法制备纳米纤维素/聚乳酸复合材料,常将纳米纤维素直接加入聚乳酸,导致制备的复合材料各项机械性能普遍降低。为了改善其机械性能,笔者采用聚乙二醇2000作为塑化剂处理纳米纤维素,制备聚乳酸/纳米纤维素/聚乙二醇三相复合材料。通过对复合材料的微观形貌观测,力学性能分析和热稳定性分析来确定聚乙二醇的影响机制。试验结果表明,添加2%～4%聚乙二醇2000的三相复合材料的拉伸强度、撕裂强度与断裂...
Fully Secure Attribute-Based Encryption for $t$-CNF from LWE
attribute-based encryption ABE ciphertext policy
2019/4/10
Attribute-based Encryption (ABE), first introduced by [SW05,GPSW06], is a public key encryption system that can support multiple users with varying decryption permissions. One of the main properties o...
Private Ciphertext-Policy Attribute-based Encryption Schemes With Constant-Size Ciphertext Supporting CNF Access Policy
Attribute-based encryption ciphertext-policy CNF
2015/12/23
Attribute-based encryption (ABE) is an extension of traditional public key encryption in which
the encryption and decryption phases are based on user’s attributes. More precisely, we focus on ciphert...
Association of Virulent Genes hly, sfa, cnf-1 and pap with Antibiotic Sensitivity in Escherichia coli Strains Isolated from Children with Community-Acquired UTI
E coli UTI pap hly sfa cnf-1 Drug resistance
2015/9/22
Background: Recent studies have suggested that the decrease in the pathogenicity of E. coli is due to acquisition of resistance to some antibiotics. This study was performed to investigate four virule...
混合型TS-1/CNF催化剂的过滤性能及催化活性
催化剂 TS-1/CNF 混合型
2009/6/11
纳米碳纤维（CNF）是一种新型的碳基催化剂载体。采用机械湿混的方式制得了混合型钛硅分子筛/纳米碳纤维（TS-1/CNF）催化剂，研究了其在水相体系中的过滤性能，以及在环己酮氨氧化反应中的催化活性。与单独TS-1相比，混合型TS-1/CNF催化剂的团聚体宏观尺寸较大，CNF交织形成的大量大孔非常有利于液体的穿透，使得TS-1/CNF催化剂具有良好的过滤性能，因而可改善TS-1在水相体系中的分离问题。...