Results 121 to 130 of about 94,198 (293)

Parabola četvrtog stupnja (bi-kvadratna parabola) kao prijelazna krivulja

open access: yesTehnički vjesnik, 2012
Prijelazne krivulje su u konstrukciji modernih cesta i željezničkih pruga elementi jednako bitni kod poravnanja kao i zakrivljenja (kružnog). Kako bi se spriječila iznenadna promjena centrifugalne sile, prijelazna se krivulja mora primijeniti zbog djelovanja sile gibanja u oštroj krivulji.
Pirti, Atınç, Yücel, M. Ali
openaire   +1 more source

Defect Driven Electronic Structure Reconfiguration and Hierarchical Phonon Suppression in Ag2Se Thermoelectrics

open access: yesAdvanced Science, EarlyView.
Indium substitution in Ag2Se nanocrystals simultaneously tailors electronic structure and lattice dynamics. Fermi‐level upshift and band‐gap narrowing enhance electrical transport, while defect‐induced lattice softening intensifies phonon scattering and suppresses lattice thermal conductivity.
Yineng Gou   +11 more
wiley   +1 more source

San Ireneo y la parábola de los obreros de la viña: Mt. 20, 1-16

open access: yesEstudios Eclesiásticos, 1971
Este estudio se divide en dos partes: los elementos de la parábola de los obreros de la viña comentada por autores fuera de Ireneo y, la segunda, según el santo.
Antonio Orbe
doaj  

Electrostatic Self‐Assembly Induced Nest‐Like MXene Networks on Fabric for Ultra‐Broadband Flexible Absorption

open access: yesAdvanced Science, EarlyView.
In this study, an electrostatically self‐assembled WPU‐MXene@FC flexible fabric constructs a “nest‐like” structure on fibers, building construct MXene multiple loss paths, achieving ultra‐wideband absorption of 25.3–1200 GHz in a thickness of 1.8 mm, while also exhibiting superhydrophobicity, acid and alkali resistance, and bending resistance ...
Min Luo   +7 more
wiley   +1 more source

Aspectos políticos y literarios de una obra de Alexandr Solschenizyn: Pabellón de cáncer

open access: yesPensamiento al Margen, 2016
El artículo analiza la obra literaria, Pabellón de cáncer, de Alexandr Solschenizyn, desde su concepción como parábola de la decadencia del estalinismo.
Manuel García Pérez
doaj  

Multi‐Channel Electrically Tunable Varifocal Metalens With Compact Multilayer Polarization‐Dependent Metasurfaces and Liquid Crystals

open access: yesAdvanced Science, EarlyView.
A compact eight‐channel electrically tunable varifocal metalens with three single‐layer polarization‐multiplexed bi‐focal metalens and three LC cells. The total thickness of the device is ∼6 mm, while the focal lengths can be switched among eight values (3.6, 4.2, 4.5, 4.9, 6.2, 6.9, 8.4, and 9.6 mm). ABSTRACT As an essential module of optical systems,
Zhiyao Ma   +11 more
wiley   +1 more source

Electrically Tunable Room‐Temperature Microwave Oscillations in GaN/AlN Triple‐Barrier Resonant Tunneling Diodes

open access: yesAdvanced Electronic Materials, EarlyView.
III‐nitride semiconductors have revolutionized optoelectronics, enabling transformative technologies such as high‐efficiency LEDs and lasers. However, their use in intersubband optoelectronics has remained limited. This work marks an important step forward by demonstrating highly coherent inter‐well resonant tunneling injection in III‐nitride ...
Jimy Encomendero   +6 more
wiley   +1 more source

Dynamic Analysis of Point Contact Gears with Circular-parabola Configuration Based on Adams Software

open access: yesJixie chuandong
Taking the point contact gear with circular-parabola configuration as the research object, based on the Adams dynamic analysis software, dynamic characteristics and the variable law of tooth surfaces are studied in this study. Firstly, according to space
Liang Dong   +4 more
doaj  

Emergence of Double‐Dome Superconductivity in the Pressurized Dirac Semimetal BaMg2Bi2

open access: yesAdvanced Electronic Materials, EarlyView.
ABSTRACT Dirac semimetal BaMg2${\rm BaMg}_{2}$Bi2${\rm Bi}_{2}$ is reported to be a unique topological material that manifests surface superconductivity that coexists with bulk band topology at ambient pressure. Here, we present a comprehensive investigation of high‐pressure superconducting properties in BaMg2${\rm BaMg}_{2}$Bi2${\rm Bi}_{2}$ single ...
Qi Wang   +5 more
wiley   +1 more source

Topological Materials and Related Applications

open access: yesAdvanced Electronic Materials, EarlyView.
This review covers topological materials—including topological insulators, quantum valley Hall and quantum spin Hall insulators, and topological Weyl and Dirac semimetals—as well as their most recent advancements in fields such as spintronics, electronics, photonics, thermoelectrics, and catalysis.
Carlo Grazianetti   +9 more
wiley   +1 more source

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