Výsledky vyhledávání - "aluminium compounds"

Akademický článek

Upping the internal quantum efficiency of green light‐emitting diodes by employing a graded AlGaN barrier and an electron blocking layer

Autor: Muhammad Usman, Abdur‐Rehman Anwar, Munaza Munsif, Ihsan Ullah

Publikováno v: IET Optoelectronics, Vol 15, Iss 1, Pp 69-74 (2021)

Abstract Two different device structures are numerically studied, and their optoelectronic characteristics with standard structure are compared. The authors minimized the uneven carrier distribution across the active region. By replacing the first qu

Externí odkaz: https://doaj.org/article/e839599f599a46818d7fd1f0a22c679d

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Akademický článek

Influence of humidity on conduction processes in gas-insulated devices

Autor: Malte Tschentscher, David Graber, Christian M. Franck

Publikováno v: High Voltage (2020)

Humidity has been considered as one of the main influencing factors that determine the conduction processes and electric strength of gas-insulated systems. Whereas in the past, various studies focused on the change in the partial discharge inception

Externí odkaz: https://doaj.org/article/10c708e7e5244a0ab349865d83236320

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Akademický článek

Implicit common-mode resonance by parasitic capacitances in LC oscillators for Ka-band satellite receiver

Autor: Seyed Hossein Alavi Lavasani, Ali Medi

Publikováno v: The Journal of Engineering (2019)

Parasitic capacitances in high frequency have a significant role in examining the inductor-capacitor tank oscillators (LC oscillators) output signal quality. Here, the authors proposed a new idea for Ka-band satellite receiver oscillator, which consi

Externí odkaz: https://doaj.org/article/c15d0091b057439bb8ba40b68d28b109

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Akademický článek

Evaluating the Efficiency of Tragacanth Coagulant Aid in Removing Colloidal Materials and Suspended Solids Creating Turbidity from Karun River Water

Autor: Majid Farhadi, Afshin Takdastan, Roghayeh Baghbany

Publikováno v: Journal of Environmental Health and Sustainable Development, Vol 1, Iss 1, Pp 1-8 (2016)

Introduction: Colloidal materials and suspended solids cause turbidity in water. To remove turbidity, clarification method is used that includes processes of coagulation, flocculation, and sedimentation. Due to the long duration of coagulation proces

Externí odkaz: https://doaj.org/article/0310dda660f84435b2599d78caed4d91

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Akademický článek

Cytotoxicity of Two Bioactive Root Canal Sealers

Autor: Anja Baraba, Sonja Pezelj-Ribarić, Marija Roguljić, Ivana Miletić

Publikováno v: Acta Stomatologica Croatica, Vol 50, Iss 1, Pp 8-13 (2016)

Objective: The aim of this study was to investigate the cytotoxicity of two different bioactive root canal sealers: one based on mineral trioxide aggregate, MTA Fillapex (Angelus, Solucoes Odontologicas, Londrina, PR, Brazil), and the other based on

Externí odkaz: https://doaj.org/article/cc469f5c376243c7a848dba2dcd77104

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Akademický článek

Tracking, erosion and thermal distribution of micro-AlN + nano-SiO(2) co-filled silicone rubber for high-voltage outdoor insulation

Autor: Muhammad Tariq Nazir, Bao Toan Phung, Shihu Yu, Yuanyuan Zhang, Shengtao Li

Publikováno v: High Voltage (2018)

Thermal depolymerisation induced tracking and erosion of polymeric insulators is one of the key insulation failure modes and this process adversely affects the reliability of power delivery networks. This study reports the tracking, erosion and therm

Externí odkaz: https://doaj.org/article/a00fa7109dcf4bae9c1181c2dc6c9a6b

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Akademický článek

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Akademický článek

Impact of Al content on InAs/AlSb/Al(x)Ga(1−x)Sb tunnelling diode

Autor: Yuping Zeng, Chingyi Hsu, Edward Yi Chang, Chenming Hu

Publikováno v: The Journal of Engineering (2017)

A method to engineer the peak-to-valley ratio (PVR) by design of the epitaxial layers is presented. The impact of Al content on PVR of InAs/AlSb/Al(x)Ga(1−x)Sb tunnelling diode is studied. A simplified analytical model is used to explain the PVRs d

Externí odkaz: https://doaj.org/article/d0cf244b5b72408b820874819d8934e0

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Modulation response of VCSELs: a physics-based simulation approach

Autor: Alberto Tibaldi, Francesco Bertazzi, Rainer Michalzik, Michele Goano, Alberto Gullino, Pierluigi Debernardi, Markus Daubenschuz

Publikováno v: 2020 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD).

A preliminary study of the dynamic behaviour of a GaAs/AlGaAs 850 nm VCSEL is presented, with the focus on the small-signal analysis and in particular on the optical amplitude modulation response. Simulations are performed with our in-house quantum-c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b331a7978294358eb9b07d9d7b087731
https://doi.org/10.1109/nusod49422.2020.9217650

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Reversible Dissociation of a Dialumene

Autor: Michael J. Cowley, Gary S. Nichol, Rosalyn L. Falconer, Tobias Krämer, Keelan M Byrne

Publikováno v: Falconer, R L, Byrne, K M, Nichol, G S, Krämer, T & Cowley, M J 2021, ' Reversible Dissociation of a Dialumene ', Angewandte Chemie International Edition . https://doi.org/10.1002/anie.202111385
Angewandte Chemie International Edition
Angewandte Chemie (International Ed. in English)

Dialumenes are neutral AlI compounds with Al=Al multiple bonds. We report the isolation of an amidophosphine‐supported dialumene. Our X‐ray crystallographic, spectroscopic, and computational DFT analyses reveal a long and extreme trans‐bent Al=

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1127a06b23d16c33c2d7529aa544e2fe
https://doi.org/10.33774/chemrxiv-2021-6443s

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