Results 11 to 20 of about 3,284,133 (290)

Impedance Characteristics of Log Periodic Antenna [PDF]

open access: yesInternational Journal of Computer Applications, 2011
Log Periodic array Antenna is one of the most important and commercially used antennas for T.V. reception. It is used in VHF and UHF bands. Although the analysis of this antenna is reported in literature, the data of self impedance & mutual impedance is not fully available. But, this data is useful for the optimal design of the antenna. In view of this
GSN Raju, B. I. Neelgar
openaire   +1 more source

Vertical Dynamics of the Upper Mureș Riverbed [PDF]

open access: yesAerul şi Apa: Componente ale Mediului
This study navigates the intricate landscape of the Mureș River's upper course, specifically through the contrasting terrains of the Giurgeu Depression and the Toplița-Deda Gorge.
Melinda VIGH, Csaba HORVÁTH
doaj   +1 more source

Superhump-like variation during the anomalous state of SU UMa [PDF]

open access: yes, 2001
We observed an anomalously outbursting state of SU UMa which occurred in 1992. Time-resolved photometry revealed the presence of signals with a period of 0.0832 +/- 0.0019 d, which is 3.6 sigma longer than the orbital period (0.07635 d) of this system ...
Kato, Taichi
core   +2 more sources

Introduction Performance and Cultivation Techniques of White Sapote in Guangdong Area

open access: yesGuangdong nongye kexue, 2022
【Objective】The large-scale cultivation of white sapote in China is in its initial stage, and the adaptability of white sapote in Guangdong is not clear yet.
Yaqian WU   +5 more
doaj   +1 more source

The Period-Index Problem of the Canonical Gerbe of Symplectic and Orthogonal Bundles [PDF]

open access: yes, 2015
We consider regularly stable parabolic symplectic and orthogonal bundles over an irreducible smooth projective curve over an algebraically closed field of characteristic zero.
Biswas, Indranil   +2 more
core   +1 more source

Characteristic multipliers for some periodic differential equations. [PDF]

open access: yesProceedings of the American Mathematical Society, 1969
Calculation of the characteristic multipliers is not routine since in general one does not know even one nontrivial solution of (1). However it is possible to obtain convergent series representations for the solutions and thus calculate approximate values for the multipliers [2], [8].
openaire   +2 more sources

Site effect on strong-motion records of the 2011 Mw9.0 Tohoku earthquake in Japan

open access: yesGeodesy and Geodynamics, 2011
Strong-motion site effect was checked for four sites at comparable epicentral distances from the March 11, 2011 Mw9.0 Tohoku earthquake in Japan.
Li Heng   +4 more
doaj   +1 more source

Optimization of Characteristic Phenological Periods for Winter Wheat Extraction Using Remote Sensing in Plateau Valley Agricultural Areas in Hualong, China

open access: yesRemote Sensing, 2022
It is important to develop or validate remote sensing methods to explore agricultural management and food self-sufficiency in the agricultural areas of the Qinghai–Tibet Plateau under the influence of global change, ecological protection, and socio ...
Shenghui Lv, Xingsheng Xia, Yaozhong Pan
doaj   +1 more source

Wave length and celerity downstream from a hydraulic jump

open access: yesRBRH, 2019
The wave period, i. e., the time interval which corresponds to a complete oscillation, is an important parameter of wave characterization. It allows the estimation of other important wave characteristics such as the length and celerity.
Ana Paula Gomes   +2 more
doaj   +1 more source

Influence of Different Ambient Temperatures on the Discharge Performance of Square Ternary Lithium-Ion Batteries

open access: yesEnergies, 2022
Electric vehicles have a promising development prospect. As its core component, lithium-ion power battery plays a crucial role in different application scenarios.
Xingxing Wang   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy