Results 51 to 60 of about 30,330 (265)

Beam Performance Optimization of Multibeam Imaging Sonar Based on the Hybrid Algorithm of Binary Particle Swarm Optimization and Convex Optimization

International Journal of Antennas and Propagation, 2016
It should be noted that the peak sidelobe level (PSLL) significantly influences the performance of the multibeam imaging sonar. Although a great amount of work has been done to suppress the PSLL of the array, one can verify that these methods do not ...
Weijie Xia, Xue Jin, Fawang Dou
doaj   +1 more source

Mechanical end joint system for connecting structural column elements [PDF]

, 1990
A mechanical end joint system is presented that eliminates the possibility of free movements between the joint halves during loading or vibration. Both node joint body (NJB) and column end joint body (CEJB) have cylindrical engaging ends.
Bush, Harold G., Mikulas, Martin M., Jr., Wallsom, Richard E.   +2 more
core   +1 more source

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

A characterization of rationality for operators in free semicircular elements

, 2021
Realizing free semicircular elements on the full Fock space, we prove an equivalence between rationality of operators obtained from them and finiteness of the rank of their commutators with right annihilation operators. This is an analogue of the result for the reduced $C^*$-algebra of the free group by G. Duchamp and C.
openaire   +2 more sources

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

Advanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan, Nora Fernández Navas, Thorgund Nemec, Ivan Kaban, Ute Hempel, Andrea Voss, Volker Hoffmann, Darius Pohl, Annett Gebert   +8 more
wiley   +1 more source

Assessing Destination Brand Image Chinatown In Term of Semarang City Branding Implementation

Jurnal Teknik Sipil dan Perencanaan, 2018
. Concerning to city branding, the role of brand image is very important for visitors to remember the tourism destination. The destination brand image can identify by 5 elements of city image, namely path, edge, node, district, and landmark.
Novia Sari Ristianti, Santy Paulla Dewi
doaj   +1 more source

Guided Surface Plasmon Mode of Semicircular Cross Section Silver Nanoridges

, 2012
Tightly confined plasmon waveguide modes supported by semicircular cross section top silver nanoridges are investigated in this paper. Mode field profiles, dispersion curves, propagation distances, confinement factors, and figure-of-merits of ...
Adato, Adato, Adato, Barnes, Berini, Berini, Berini, Berini, Boardman, Boltasseva, Bozhevolnyi, Buckley, Charbonneau, Cho, Cleary, Craig, de Waele, Degiron, Dintinger, Economou, Feigenbaum, Feigenbaum, Gordon, Gramotnev, Guo, Guo, Holmgaard, Hu, Johnson, Junpeng Guo, Krasavin, Krasavin, Lamprecht, Moreno, Moreno, Novotny, Ogawa, Oulton, Pan, Pan, Pile, Pile, Reinhardt, Saleh, Sarid, Satuby, Soref, Stegeman, Steinberger, Sun, Vesseur, Yan, Yang, Zeyu Pan, Zia, Zia   +55 more
core   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Influence of Intrinsic Trapping on The Performance Characteristics of ZnO-Bi2O3 Based Varistors

Active and Passive Electronic Components, 1994
The lumped parameter/complex plane analysis technique reveals several contributions to the ac small-signal terminal immittance of the ZnO-Bi2O3 based varistors' grain-boundary response.
Mohammad A. Alim
doaj   +1 more source