|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Miniaturized UWB multi-resonance patch antenna loaded with novel modified H-shape SRR metamaterial for microspacecraft applications显示文摘本文设计并分析了一种改进H形裂环谐振器(split ring resonator,SRR)的新型超材料。它具有负磁导率和负介电常数特性,且在X,Ku和Ka频带内具有多频共振特性。本文就超材料方向和位置的变化对不同配置下的贴片天线进行了分析。结果表明,新型超材料天线实现了性能优化,表现为9 d B的可观增益,77 GHz的带宽,100%的辐射效率,以及有源区65%的面积缩减。二阶分形超材料天线尺寸降至1/21,从而实现了高度小型化。该研究为急需小尺寸尖波束的通信领域提供了一种解决方案。 | Parul DAWAR N. S. RAGHAVA Asok DE | 2017 | Frontiers of Information Technology & Electronic Engineering2017，18，11： | 3 |
| 2 | Mutual Authentication Protocol Using Hyperelliptic Curve Cryptosystem in Constrained Devices显示文摘 | KAKALI Chattetjee ASOK De DAYA Gupta | 2013 | International Journal of Network Security2013，15，1： | 1 |
| 3 | Mutual Authenti- cation Protocol Using Hyperelliptic Curve Cryptosystem in Constrained Devices显示文摘 | Kakali Chatterjee Asok De Daya Gupta | 2013 | International Journal of Network Security2013，15，01： | 1 |
| 4 | Pollen Morphology of Indian Species of Saraca L.(Leguminosae)-A Threatened and Legendary Medicinal Tree显示文摘The genus Saraca L.(Leguminosae)is a universal panacea in herbal medicine.The present study investigates the comparative pollen morphology of four species of Saraca viz.S.asoca(Roxb.)de Wilde,S.declinata(Jack)Miq.,S.indica L.,and S.thaipingensis Cantley ex Prain growing in India to reveal differences of their pollen structures to aid taxonomic and evolutionary values.The detailed morphology and surface structure of pollen grains were studied and described using light microscopy and scanning electron microscopy.The pollen grains of Saraca showed isopolar,para-syncolporate,tricolporate,with radially symmetric,prolate and prolate-spheroidal structure.The surface of pollen of S.indica is rugulate with large lirae but in S.declinata,the surface is micro-rugulate to vermiculate with relatively thin lirae and that of S.thaipingensis is indistinct as the psilate surface with a frequent protuberance and fewer perforations were observed along with the gemmae like structure.Exine ornamentation helped to separate S.indica and S.asoca.Exine thickness varies from 3-4μm.Presence of protuberance and exine thickness varies among individuals of the species spread over different locations.Present work also provides a unique palynological identity and interrelationship of these four species based on cluster analysis taking 23 pollen characters with the help of statistical method like the plotting of ternary graph.Ternary plots also helped to calculate the level of plasticity of each character in the intra-and inter-specific level. | Sujit Sil Tanmoy Mallick Tuhin Pal Animesh Mondal Kalyan Kumar De Asok Ghosh | 2019 | Phyton-International Journal of Experimental Botany2019，88，3： | 0 |
| 5 | Low Pass Filter Design by Using the Ladder Network of DGS显示文摘 | Dhirendra Kumar Asok De | 2011 | 通讯和计算机(中英文版)2011，8，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员