Results 81 to 90 of about 303,910 (293)
Compact fully metallic multi‐mode waveguide antenna for cellular communications
IET Microwaves, Antennas & PropagationThe needed isolation between elements for high‐performance beam steering array antennas is a challenging task especially when the distance between the antenna elements is reduced.
Ali Mokhtarani +2 more
doaj +1 more source
Frontiers in Antennas and PropagationThe objective of this manuscript is to analyze and electromagnetically simulate two different horn antenna configurations, namely, a pyramidal horn antenna and a conical horn antenna.
Hatice-Andreea Topal +1 more
doaj +1 more source
The internal crest anatomy of Lambeosaurini (Hadrosauridae: Lambeosaurinae)
The Anatomical Record, EarlyView.Abstract The supracranial crests of lambeosaurine hadrosaurids have long been a focus of study due primarily to their extreme morphology. The external anatomy of lambeosaurine crests is understood to be highly variable between species, but variation in their internal anatomy is less well understood.
Thomas W. Dudgeon +2 more
wiley +1 more source
, 1989 Bu çalışmada; mükemmel iletken cidarlı konikal horn antenden ışıyan TEoı moduna ait elektrik ve mağnetik alan ifadeleri elde edilmiş, ışıma diyagramı bilgisayar yardımıyla çizdirilerek bu diyagramların frekans ve hor nun geometrik boyutlarına göre ...
Cüce, Salih
core
Osteohistology of two phorusrhacids reveals uninterrupted growth strategy
The Anatomical Record, EarlyView.Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer +2 more
wiley +1 more source
IET Microwaves, Antennas & PropagationThis paper presents a novel dual‐band waveguide‐fed circularly polarised (CP) horn antenna for the feeder of synthetic aperture radar (SAR) onboard microsatellite.
Derry Permana Yusuf +4 more
doaj +1 more source
Gaussian profiled horn antennas [PDF]
, 1999 Trabajo presentado al ISRAMT’99. 7th International Symposium on Recent Advances in Microwave Technology. Málaga, 1999.In many different applications parameters such efficiency, gain, directivity, etc., are really critical.
Gonzalo García, Ramón +2 more
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Early stages of tooth development in the harbor porpoise Phocoena phocoena
The Anatomical Record, EarlyView.Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes +2 more
wiley +1 more source
Comparison of fabric and embroidered dipole antennas
, 2013 Flexible antennas are an important component for wearable wireless devices of the future. A comparison between fabric and embroidered dipole antennas is performed to evaluate the suitability of different conductors as building blocks of textile antennas.
Fumeaux, I., Kaufmann, T., Fumeaux, C.
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The Anatomical Record, EarlyView.Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini +3 more
wiley +1 more source