Results 71 to 80 of about 3,039 (221)

Synergistic Dual‐Defect Engineering in Amorphous‐Nanocrystalline Heterostructures for Accelerated Oxygen Evolution

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Defect engineering has been widely demonstrated as an effective strategy for enhancing the activity of OER metal catalysts, among which the introduction of twin boundaries (TBs) has proven particularly efficient. However, single‐type defects offer limited performance enhancement.
Wentao Cai   +11 more
wiley   +1 more source

Techniques for homodyne dechirp-on-receive linearly frequency modulated radar

open access: yes, 2011
This thesis presents work done to extend and improve the operation of homodyne dechirp-on-receive linearly frequency modulated radars. First, an investigation of the effect of common phase errors on the point response function of the radar is ...
Middleton, Robert
core  

Integrating Soil Taxonomy With Soil and Remote Sensing Indices for Site‐Specific Management in the Egyptian Nile Delta Fringes

open access: yesSoil Use and Management, Volume 42, Issue 3, July‐September 2026.
ABSTRACT Sustainable soil management in arid regions is constrained by the limited translation of subgroup‐level soil taxonomy into site‐specific agronomic recommendations. Hence, this study integrated field observations and laboratory analyses from 18 soil profiles with freely available Google Earth Engine (GEE) datasets.
Abdelrazek Elnashar   +3 more
wiley   +1 more source

CRM-203 Type Frequency Modulated Continuous Wave (FM CW) Radar [PDF]

open access: yesTransNav, 2009
Paper presents description of the principle of work, structure and basic technical parameters of the Maritime Coastal Surveillance Frequency Modulated Continuous Wave (FMCW) Radar CRM-203 type constructed by Telecommunication Research Institute Ltd.
Slawomir Plata, Ryszard Wawruch
doaj  

Characteristics and Trends in Short‐Duration Heavy Rain in Wet‐Season in Hong Kong

open access: yesInternational Journal of Climatology, Volume 46, Issue 7, 15 June 2026.
This study examines the characteristics of heavy rain events (hourly rainfall ≥ 30 mm) in Hong Kong from 2000 to 2024. A statistically significant increasing trend in short‐duration (1–3 h) heavy rain events (3.4 events per decade) in the wet season is observed, primarily due to other mechanisms rather than surface troughs or tropical cyclones. Notably,
Lai‐lai Leung   +5 more
wiley   +1 more source

High-Resolution Estimation of Ranges Using Multiple-Frequency CW Radar

open access: yes, 2007
The problem of ranging multiple vehicles traveling at similar speeds using multiple-frequency continuous-wave (CW) radar is considered. A new method based on the compensation of vehicle movement and MUSIC-based time delay estimator is presented.
Rydberg, Anders,   +2 more
core   +1 more source

Disseny i verificació d'un radar CW-FM a 94 GHz

open access: yes, 2013
Diseño y validación de un radar CW-FM a 9g GHz94 GHz CW-FM radar design and mesurement campaign validation.Desarrollo de un radar CW-FM a 94GHz y verificación de los resultados obtenidos durante la etapa de medidas.Desevolupament d'un radar CW-FM a 94GHz
Varela Agrelo, David
core   +2 more sources

Reactive Laser Additive Manufacturing of Hierarchically Structured Aerogels

open access: yesAdvanced Materials, Volume 38, Issue 33, 12 June 2026.
Reactive laser additive manufacturing transforms printing into a chemically active synthesis step. Salt‐enabled transient reaction environments drive in situ formation of hierarchically structured graphitic aerogels with microtubular and nanoscale features in seconds.
Shuichiro Hayashi   +6 more
wiley   +1 more source

Fundamental aspects of netted radar performance

open access: yes, 2010
Netted radar employs several spatially distributed transmitters and receivers for information retrieval. This system topology offers many advantages over traditional monostatic and bistatic systems which use a single transmitter and a single receiver ...
Teng, Y.
core  

Cancellation Technique for CW Ground Penetrating Radar Applications

open access: yes, 2015
International audienceAn adjustable canceller based on microwave interferometry is proposed for ground penetrating radar applications. This canceller, built up with a power divider and an impedance tuner, is integrated in a monostatic continuous wave (CW)
Nounouh, S., Lasri, T., Haddadi, Kamel
core   +1 more source

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