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107 resultados encontrados.

Tipos de recurso: Libro electrónico Artículo Revista Tesis Capítulo
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Structural quality in single crystalline CdSe ingots grown by PVT: Qualidade estrutural em lingotes de CdSe monocristalinos crescidos por PVT
Artículo
Acceso abierto Artículo CONICET Digital
D'Elía, Raúl Luis et al · Universidade Federal do Rio de Janeiro · 2020 · ISSN 1517-7076
CdSe is II-VI semiconductor with compact hexagonal structure. It has a band gap of 1.82 eV and a high stopping power for nuclear radiation. Single crystalline CdSe ingots were grown by Physical Vapor Transport (PVT) empl...
Idioma eng
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Open Access
Travelling to the south: Phylogeographic spatial diffusion model in Monttea aphylla (Plantaginaceae), an endemic plant of the Monte Desert
Artículo
Material complementario disponible Artículo CONICET Digital
Baranzelli, Matias Cristian et al · Public Library of Science · 2017 · ISSN 1932-6203
Effects of Pleistocene climatic oscillations on plant phylogeographic patterns are relatively well studied in forest, savanna and grassland biomes, but such impacts remain less explored on desert regions of the world, es...
Idioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
Variability of Minisatellite Loci and mtDNA in Individuals with and without B Chromosomes from Populations of the Grasshopper Dichroplus elongatus
Artículo
Acceso abierto Artículo CONICET Digital
Rosetti, Maria Eva Natalia et al · Springer · 2017 · ISSN 0071-3260
Dichroplus elongatus is an extensively distributed South American grasshopper considered a pest of major crops. Argentinean populations show a widespread B-chromosome polymorphism which could be maintained as the result ...
Idioma eng
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Open Access
A Compact Dual-Band Octagonal Slotted Printed Monopole Antenna for WLAN/ WiMAX and UWB Applications
Artículo
Material complementario disponible Artículo DOAJ
Praveen V. Naidu et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
AbstractA compact (20 x 20 mm2 size), coplanar waveguide (CPW) fed, octagonal slotted, dual-band antenna is presented in this paper. The proposed antenna has a simple structure consisting of an octagonal slot, L-shape st...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
A JL-SDR-IMPATT Device with Improved Efficiency
Artículo
Acceso abierto Artículo DOAJ
Dipan Bandyopadhyay et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract An attempt has been made to present a new device which will function as a highly efficient SDR (Single Drift Region) P+-N- N+ IMPATT diode utilizing the advantages of a junctionless field effect transistor. The ...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
A New Triple Band Microstrip Fractal Antenna for C-band and S-band Applications
Artículo
Acceso abierto Artículo DOAJ
Edwin L. Barreto et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract Recently research show that some parameters such as the shapes of antenna patch and the ground plane when geometrically altered produces changes in the current density distribution of the planar structure and co...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
A Novel Fractal Multi-band Frequency Selective Surface
Artículo
Material complementario disponible Artículo DOAJ
Mahmoud Fallah et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract In this paper, a new multiband fractal frequency selective surface (MF-FSS) is proposed. The work presents a new fractal design methodology for FSSs with Swastika fractal patch elements. The proposed MF-FSS incl...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
A Novel Tri-bandpass Filter Side-coupled Square Ring Based
Artículo
Acceso abierto Artículo DOAJ
José Garibaldi Duarte Júnior et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract This work presents the design of a tri-bandpass filter based on the side-coupled square ring structure. The modeling is conceived from the classic approach of coupled transmission lines. The geometry consists of...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
A Novel Wideband Magnetoelectric Dipole Antenna with Circular Polarization Applied to CubeSat
Artículo
Acceso abierto Artículo DOAJ
Bruno Matias de Sousa et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2024 · ISSN 2179-1074
Abstract In this work a broadband Magnetoelectric (ME) dipole antenna for the Global Navigation Satellite System (GNSS) applied to nanosatellites is proposed. The antenna consists of a reflective cavity with open walls c...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
A Research Funding Allocation Scheme in Multi-Layer Networks for the Growth of Talents
Artículo
Acceso abierto Artículo DOAJ
Zengke Jia et al · IEEE · 2022 · ISSN 2169-3536
Talent training is a critical issue of social development. Particularly, talent training in research-oriented universities plays a key role in human resources management. However, achieving effective talent development w...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
A methodology for performance evaluation of LEDs based on ac small signal analysis
Artículo
Acceso abierto Artículo DOAJ
Isnaldo J. Souza Coêlho et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
This paper shows fundamentals and results that support a promising methodology for evaluation in locus of a LED from its own radiating signal, and that allows monitoring of its aging by remote inference on which degradat...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
A new stator flow-oriented control method based on type-2 fuzzy logic controllers for permanent magnet synchronous motors
Artículo
Material complementario disponible Artículo DOAJ
M. Tabbakh et al · National Technical University "Kharkiv Polytechnic Institute" · 2026 · ISSN 2074-272X
Introduction. Stator flow-oriented control is currently the most widely used system in industry or in previous research for improving the quality of mechanical power generated by permanent magnet synchronous motors (PMSM...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
AI-Assisted Semiotic Analysis of the Cultural Absence of the Zulfikar Sword in Chinese Islamic Visual Culture
Artículo
Material complementario disponible Artículo DOAJ
Qiling Huang et al · IEEE · 2026 · ISSN 2169-3536
The Zulfikar sword is a highly standardized sacred weapon symbol in Shia visual culture, forming a stable iconographic lineage across the Middle East and the Irano-Ottoman world. However, it is notably absent from Chines...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
Absorb/Transmit Broadband Type Frequency Selective Surface
Artículo
Acceso abierto Artículo DOAJ
José Jaime G. P. Neto et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2023 · ISSN 2179-1074
Abstract Frequency Selective Surfaces (FSS) are increasingly being used in telecommunications systems due to the numerous advantages presented by this sort of structure, among them low cost, ease of fabrication, and low ...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Advanced Adaptive Protection Scheme to Minimise Outages and Enhance Reliability in Renewable-Integrated Oil and Gas Power Networks
Artículo
Material complementario disponible Artículo DOAJ
Rula Tawalbeh et al · IEEE · 2026 · ISSN 2169-3536
Integration of Photovoltaic (PV) generation into oil and gas power networks has transformed fault behaviour by creating highly complex sensitivity challenges for conventional Overcurrent Relay (OCR) coordination and trip...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
Advanced LLM Transformers and Zero-Shot XGBoost for Accurate Arabic Text Insights and Profit Predictions
Artículo
Acceso abierto Artículo DOAJ
Sally Mohamed Ali Elmorsy · SpringerOpen · 2026 · ISSN 2314-7172
Abstract This research proposes an innovative Arabic financial forecasting model that integrates linguistic relation extraction with advanced deep learning and machine learning techniques. The framework combines Arabic O...
LCC LCC:Electrical engineering. Electronics. Nuclear engineering; TENDOkluZm9ybWF0aW9uIHRlY2hub2xvZ3k~Idioma eng
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Open Access
An Exploratory Analysis of Impulse Noise Filters on X-Ray Phantom Images
Artículo
Material complementario disponible Artículo DOAJ
R. E. Usha Rani et al · IEEE · 2026 · ISSN 2169-3536
Radiography or X-ray imaging is a diagnostic imaging used in medicine to produce images of inner anatomical structures such as bones, teeth, lungs, and chest organs. Impulse noise is one of the major factors that degrade...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Material complementario
Analysis of Electromagnetic Problems in the Presence of Non-uniform Movements
Artículo
Acceso abierto Artículo DOAJ
Mohammad Marvasti et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2024 · ISSN 2179-1074
Abstract Electromagnetic problems with moving structures are considered. For objects moving at a uniform velocity, the most popular technique used in the literature consists of a change of the reference frame and the uti...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Analysis of Thermo-Mechanical Stress in Fiber Bragg Grating Used for Hydro-Generator Rotor Temperature Monitoring
Artículo
Acceso abierto Artículo DOAJ
R.C. Leite et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract Fiber Bragg gratings (FBGs) offer new possibilities to monitor accurately the rotor temperature. Dozens of sensors can be mounted in series in a single fiber and used to measure the temperature in several points...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Analysis of microstrip antennas on carbon fiber composite material
Artículo
Acceso abierto Artículo DOAJ
Rodrigo R. de Assis et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
In this paper a truncated corner rectangular microstrip antenna (TCRMA) is analyzed in the presence of carbon fiber composite (CFC) material. Simplified carbon fiber composite models are proposed and the analyses are per...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Community of Experts-Based VAE for Recommendation
Artículo
Material complementario disponible Artículo DOAJ
Nadhir Cheriet et al · IEEE · 2026 · ISSN 2169-3536
User populations in modern recommendation systems consist of diverse communities with distinct and often non-overlapping preferences. However, most existing models, such as traditional Variational Autoencoders (VAEs), op...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Material complementario
Data-Centric Deep Learning for Monkeypox Detection: Hyperdatasets Toward Robust and Generalizable Medical AI
Artículo
Acceso abierto Artículo DOAJ
Anastasios Andreadis et al · IEEE · 2026 · ISSN 2169-3536
In this work, a structured hierarchy of hyperdatasets for Monkeypox image classification is presented, aiming to evaluate the robustness and generalization ability of deep classification models for Mpox detection. A syst...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Design and Modal Analysis of Photonic Crystal Fiber for Dispersion Compensation over Broadband Range
Artículo
Acceso abierto Artículo DOAJ
Madhavi Waghmare et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract In this paper we have presented the four new investigations using different structures of Photonic Crystal Fiber (PCF) for broadband communication applications and narrows down on the design which can provide la...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Design and Performance Study of Single and Multi-Layered Fractal Based Miniaturized Patch Antennas for 2.4 GHz Applications
Artículo
Acceso abierto Artículo DOAJ
Amiya Bhusana Sahoo et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2021 · ISSN 2179-1074
Abstract The design and characterization of single and multi-layered miniaturized microstrip antennas resonating at 2.4 GHz are proposed. The miniaturization is accomplished by fractal Defected Ground Structure (DGS). Th...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access