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161
Novel narrowband microstrip filters for wireless communications systems
Published 2010“…The various ‘C-shape’ open-loop ring resonators were developed and fabricated, namely ‘Embedded-Square’ and ‘Embedded-Triangle’ resonators, exhibited a quasielliptic function bandpass filter response free from spurii across an ultra-wide bandwidth. …”
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162
Photonic controlled metasurface for intelligent antenna beam steering applications including 6G mobile communication systems
Published 2023“…The metasurface layer is a lattice pattern of square framed rhombus ring shaped unit-cells that are interconnected by PIN photodiodes. …”
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163
Studies of complexes derived from 5-acetylamino-1,2-benzoquinone 2-oxime and related ligands
Published 1991“…For all complexes i.r. studies indicate the involvement of the ring CO in bonding. Their electronic spectra show strong absorption in the u.v. region which tails into the visible but d - d transitions have been clearly Identified for Ni(5-Acqo)2.6H20 and Mn(5-Acqo)3 .H20. …”
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Thesis -
164
Microwave absorber based on biocomposites derived from agricultural wastes with reinforcement of poly lactic acid
Published 2021“…The fibers samples are prepared in 0.3 mm particle size, meanwhile the polymer and biocomposites are in ring shaped forms using mix and blend process and injection moulding. …”
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165
Application of functionally graded materials for severe plastic deformation and smart materials: experimental study and finite element analysis
Published 2012“…The thick�walled pressure vessel was replaced by a system of discrete rectangular cross-section ring elements interconnected along circumferential nodal circles. …”
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Thesis -
166
High-gain metasurface in polyimide on-chip antenna based on CRLH-TL for sub-terahertz integrated circuits
Published 2020“…Concentric dielectric-rings are etched in the ground-plane under the radiation patches implemented on the top-layer. …”
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167
Metasurface for controlling polarization of scattered EM waves
Published 2020“…The dual band metasurface is realized by stacking an array of multiple concentric circular rings. By rotating each array with respect to each other, we can manipulate its impedance at distinct frequencies. …”
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168
Metamaterial inspired electromagnetic bandgap filter for ultra-wide stopband screening devices of electromagnetic interference
Published 2023“…The size and gap between the slit-rings dictate the magnitude of the reactive loading. …”
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169
High performance on-chip array antenna for terahertz integrated circuits
Published 2019“…The sub-antennas are constructed from interconnected dual-rings. Also, the sub-antennas are interconnected to each other. …”
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170
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The synthesis and pharmacology of gamma-aminobutyric acid receptor mimetics
Published 1981“…These studies revealed that the class of GABA agonist, in which the amino groups are incorporated into six-membered rings exhibit an unexpected variety of activities with respect to their ability to inhibit 3H-GABA binding; their affinity for GABA uptake sites and their interaction with the coupled GABA/benzodiazepine sites.…”
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Thesis -
173
Tetraazamacrocyclic ligands and their copper complexes
Published 1982“…For the 15-membered macrocycle, 18,19,20,21-tetrahydro-17-H-tribenzo(f,j,n)(1,5,9,12)tetraazacyclopentadecine, derivatives bearing different substituents in one of the benzene rings were prepared. For the diimine ligands of this type both cationic and neutral copper(II) complexes were isolated and characterised; (the latter type result from loss of anilino protons on complex formation.) …”
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174
Studies of quinone monooximes derived from dihydroxyphenylalanines
Published 2007“…The tendency of the dihydroxynaphthalenes investigated in this work to undergo only mono-nitrosation might reflect the deactivation of the naphthalene rings by the introduction of the CO and NO groups. …”
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Thesis -
175
Developing a framework of non-fatal occupational injury surveillance for risk control in palm oil mills
Published 2018“…Analysis of logistic regression indicated that working in shift, not wearing protective gloves, health problems such as shortness of breath and ringing in ears, and excessive noise level (≥ 85 dB[A]) were the risk factors of NFOI in palm oil mills among OP workers. …”
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Thesis -
176
Metamaterial-inspired antenna array for application in microwave breast imaging systems for tumor detection
Published 2020“…The proposed antenna consists of square-shaped concentric-rings which are connected to a central patch through a common feedline. …”
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177
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Adsorption and corrosion inhibition accomplishment for thiosemicarbazone derivatives for mild steel in 1.0 M HCl medium: Electrochemical, XPS and DFT studies
Published 2021“…The most plausible reason is due to benzene rings in the molecular structure increases the adsorption ability in supporting the substituent of chloro as well as conjugated double bond of C=N and C=S that chemisorbed along the surface of metal. …”
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179