Autor: Lv, Peng - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: EDFA based adaptive RZ-OOK transmission for FSO communication
Autorzy:: Lv, Peng-Fei
Hong, Yan-Qing
Tematy:: free-space optical communication
erbium-doped fiber amplifier
average signal-to-noise ratio
adaptive transmission; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/58970397.pdf Link otwiera się w nowym oknie
Opis:: This paper proposes an erbium-doped fiber amplifier (EDFA) based adaptive return-to-zero on-off keying (RZ-OOK) transmission for free-space optical (FSO) communication. EDFA has the characteristics of average power limitation. Therefore, the transmitted RZ-OOK duty cycle is varied for accomplishing pulse power variations relying on determined average signal-to-noise ratio of received signal. Thus, the atmospheric turbulent effects can be compensated by this type of adaptive RZ-OOK transmission. The channel models with different turbulence effects are established, and the proposed technique is validated in simulation. The simulation results illustrate that the communication quality of system is considerably enhanced by the proposed technique compared with fixed threshold decision and adaptive threshold decision.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Extraction of rubidium ion from brine solutions by dicyclohexano-18-crown-6 / ionic liquid system
Autorzy:: Huang, Dongfang
Ma, Guixiang
Lv, Peng
Zhou, Quanbao
Tematy:: Rubidium
Ionic liquid
Dicyclohexano-18-crown-6
Solvent extraction; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/2204138.pdf Link otwiera się w nowym oknie
Opis:: Separation among rubidium and potassium ions from salt lake brines remains challenging. In this work, a typical room temperature ionic liquid 1-ethyl-3-metyhlimidazaolium bis(trifluoromethylsulfonyl)imide ([C2mim+][NTf2-]) was used as diluent and synergistic extractant, dicyclohexano-18-crown-6 (DCH18C6) was used as extractant to extract rubidium ions from brine solutions which contain high concentrations of potassium ions was investigated. Under the optimal conditions, the single extraction efficiency of rubidium ions was up 93.63%. The thermodynamic parameters of the rubidium ion extraction were obtained. Based on the slope analysis method, the extracted species in the organic phase were ascertained as 1:1 complex. UV-visible has been performed to investigate the ion concentration of ionic liquid before and after the interaction of metal ions and ligands. Rubidium ions in [Rb · DCH18C6]+ complex were stripped by 2.5 mol · L–1 NH4NO3. The extraction system offers high efficiency, simplicity and environmentally friendly application prospect to separate rubidium from brine solutions.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Multi-Band Calculations on the Upper Critical Fields of Iron Pnictide Superconductor $Ba(Fe_{1-x}Ni_x)_2As_2$ (x=0.072)
Autorzy:: Huang, Hai
Lv, Peng-Li
Li, Wei-Feng
Liu, Peng
Tematy:: 74.25.Ha; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1399148.pdf Link otwiera się w nowym oknie
Opis:: Based on two-band Ginzburg-Landau theory, we study the upper critical fields for the overdoped composition of the iron-based superconductor $Ba(Fe_{1-x}Ni_x)_2As_2$ with x=0.072. All the temperature and angular results of this compound are consistent with the experimental data. Thus our analysis strongly suggests that $Ba(Fe_{1-x}Ni_x)_2As_2$ in the overdoped regime is a two-gap superconductor.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Microstructure and mechanical properties of friction stir lap welded dissimilar Al/Ti alloys by ultrasonic assistance
Autorzy:: Dong, Zhibo
Zhang, Ziao
Hu, Wei
Gong, Peng
Lv, Zan
Tematy:: friction stir lap welding
ultrasonic
intermetallic compounds
failure load
fracture; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/2048878.pdf Link otwiera się w nowym oknie
Opis:: Dissimilar Al/Ti alloy sheets were lap welded with ultrasonic assistance in this work. The influence of ultrasonic vibration on formation, intermetallic compounds (IMCs) and tensile failure load of the obtained joints was discussed. The results showed that voids formed at the lap interface without ultrasonic assistance. No voids can be observed on the joint welded with ultrasonic because the vibration during welding improved the material flow. No obvious IMC formed at the Al/Ti bonding interface of the joint welded without ultrasonic assistance. An IMC layer formed at the bonding interface of Al/Ti with ultrasonic assistance and its thickness increased with decreasing the welding speed. The failure load of the joint welded with ultrasonic assistance was higher than the joint without ultrasonic because the void was eliminated and the thin IMC layer formed at the bonding interface was beneficial to joint strength. All joints presented shear failure mode during the tensile shear tests.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Informacja

Wyszukujesz frazę "Lv, Peng" wg kryterium: Autor