Ara
Toplam kayıt 854, listelenen: 461-470
Bor ile yapılan tane inceltmenin Al-30Zn alaşımının mikroyapı ve mekanik özelliklerine etkisi
(Gazi Univ, Fac Engineering Architecture, 2019)
In this study, one binary aluminum-zinc (Al-30Zn) alloy and nine ternary aluminum-zinc-boron [Al-30Zn-(0.01-2) B] alloys were produced by permanent mold casting method. Structural properties of the produced alloys were ...
Hava hedeflerinin tespiti için yakın gerçek zamanlı çoklu frekans bandı destekli pasif radar sisteminin geliştirilmesi
(Gazi Univ, Fac Engineering Architecture, 2019)
Passive radars are radar systems that do not have a transmitter of their own but can identify and follow targets by using the transmitters located in the environment. the interest in passive radar systems, whose history ...
Development of narrowband 92 MHz Yagi-Uda antenna for use in passive radar applications
(Ieee, 2019)
The Yagi-Uda antennas have a wide range of applications ranging from radio broadcasting to passive radar systems. in this study, a Yagi-Uda antenna was developed to be used as a receiving antenna in an FM based passive ...
Extraction of theoretical bit and symbol error rates of dual carrier modulation with QPSK
(Ieee, 2019)
Dual carrier modulation (DCM) improves transmission performance in wireless communication channels by using it with orthogonal frequency-division multiplexing (OFDM). in the literature, DCM is proposed to use in ultra-wideband ...
Geological, mineralogical and geochemical properties of the Dagbast skarn ores (Arakh-Trabzon, NE Turkey)
(Maden Tetkik ve Arama Genel Mudurlugu-Mta, 2019)
The Dagbasi skarns have developed as an exoskarn type along the nearest border of Upper Cretaceous Dagbasi Granitoid and block- and lens-shaped limestones of Berdiga formation located in the Liassic volcanics. the early ...
QPSK-dual carrier modulation for ultra-wideband communication in body area network channels
(2019)
Dual carrier modulation (DCM) using orthogonal frequency-division multiplexing (OFDM) improves the performance in multipath fading channels. In the literature DCM is proposed with 16-quadrature amplitude modulation (16QAM) ...
Sperm detection and analysis using feature description algorithms
(Ieee, 2019)
Computer aided sperm analysis (CASA) systems have been used in recent years to examine the mobility and morphology of human and animal sperm. While these systems detect sperm, they fail to detect more than one sperm image ...
Investigation of passive radar target detection performance improvement by using multiple co-located FM radio transmitters
(2019)
Interest in passive radar systems is increasing because of its hidden operational capabilities, cost effectiveness and low maintenance requirements. The greatest advantage of these systems is that they can detect and follow ...
Room temperature superplaticity in fine/ultrafine grained materials subjected to severe plastic deformation
(Japan Inst Metals & Materials, 2019)
Achieving superplasticity at high temperatures and at very low strain rates is considered to be the most important disadvange of superplastic forming processes. Therefore, it is crucial to achieve superplastic behavior at ...
Fabrication and characterization of Au/n-ZnO/p-Si/Al sandwich device with Sol-gel spin coating method
(Springer, 2019)
ZnO thin films with the n-type properties were obtained on the p-Si substrates for multi-layered sandwich device depositing by sol-gel method. Au and Al were conducted on two side of hetero-junction by PVD technique. From ...