| 1. |
- Alkhazov, GD, et al.
(författare)
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SPES4-pi: installation for exclusive study of nuclear reactions
- 2005
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 551:2-3, s. 290-311
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Tidskriftsartikel (refereegranskat)abstract
- The paper describes the spectrometric system "SPES4-pi" used at the National Laboratory Saturne (CE Saclay, France) for the exclusive study of the baryon resonance excitation in inelastic alpha and d scattering on the proton, as well as coherent pion production in charge exchange reactions. The system consists of the magnetic spectrometer SPES4 and two wide-aperture position-sensitive detector arrays, equipped with wire chambers and scintillator hodoscopes, installed around a large-gap C-shape dipole magnet.
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| 2. |
- Gao, Feng, et al.
(författare)
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Charge order suppression and weak ferromagnetism in La1/3Sr2/3FeO3 nanoparticles
- 2007
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Ingår i: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 91:7, s. 072504-
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Tidskriftsartikel (refereegranskat)abstract
- Perovskite-type polycrystalline La1/3Sr2/3FeO3 particles with different sizes (80-2000 nm) were prepared using a simple sol-gel technique. In samples of nanoparticles with a diameter of less than 300 nm, weak ferromagnetism was observed at room temperature, which was attributed to the lattice distortion. The magnetic and specific heat measurements suggest that the charge ordering state was largely suppressed due to the lowering of the particle size, but the charge ordering temperature remained unaffected. (C) 2007 American Institute of Physics.
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| 3. |
- Gao, Feng, et al.
(författare)
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Effects of substrate temperature on Bi0.8La0.2FeO3 thin films prepared by pulsed laser deposition
- 2007
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Ingår i: Thin Solid Films. - : Elsevier. - 0040-6090 .- 1879-2731. ; 515:13, s. 5366-5373
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Tidskriftsartikel (refereegranskat)abstract
- Bi0.8La0.2FeO3 thin films on Pt/TiO2/SiO2/Si substrates at various substrate temperatures from 500 degrees C to 750 degrees C are prepared by pulsed laser deposition, and their microstructures and ferroelectric/magnetic properties are carefully investigated using various techniques. It is observed that the crystallographic orientation and Fe-ion valence state depend significantly on the substrate temperature, which consequently influences considerably on the ferroelectric and magnetic properties of the thin films. A considerable improvement of the ferroelectric and magnetic properties of the thin films can be achieved by optimizing the substrate temperature for deposition. (C) 2007 Elsevier B.V. All rights reserved.
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| 4. |
- Li, Z., et al.
(författare)
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Data compression and life signal acquisition SoC design
- 2008
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Konferensbidrag (refereegranskat)abstract
- A simple data compression method used for designing of SoC architecture of life signal acquisition is proposed in this paper. The health service is an important part of home network following the development of information technology. Considering the parameters of each life signal for information analysis the re-sampling method can be used as a compression method. Re-sampling method is not complex and can be implemented with simple circuit. The SoC is used for a health service system in the home network. The advantage of the method is of a SoC with low power consumption.
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| 5. |
- Li, Z., et al.
(författare)
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SoC architecture with a switch bridge for wireless ECG data acquisition
- 2009
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Ingår i: 2009 1st International Conference on Information Science and Engineering, ICISE 2009. - 9780769538877 ; , s. 3701-3704
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Konferensbidrag (refereegranskat)abstract
- NoC architecture with a switch bridge is designed for mixed signal SoC of the ETB (ECG T on body) applied in home healthcare wireless network. The SoC including multi CPU systems can be divided into different parts with data process function. Therefore each part of the system can work independently without influence each other. With the discussion of the performances of ETB, the switch bridge is a suitable NoC (network on chip) technology for reducing the dies size and power consumption. The switch bridge designed in this paper connects two CPU systems and two others digital circuitry components together. To the CPU systems, common digital circuitry is a part of the CPU system with the bridge. The architecture and logic function of the switch bridge is analyzed in detail and simulated. The simulation results demonstrate that the connection bridge can not only supply the connection of two CPU and two common modules, include display module and RAM, but also increased the running speed and system performance.
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| 6. |
- Liu, J., et al.
(författare)
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Switch bridge architecture of NoC for wireless ECG data acquisition
- 2009
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Ingår i: 3rd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2009. - 9781424429028 ; , s. 887-890
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Konferensbidrag (refereegranskat)abstract
- A switch bridge is addressed for the interconnection of two CPU systems in the SoC of the ETB (ECG terminal on body) in home healthcare wireless network. The SoC including multi CPU systems can be divided into different parts with data process function. Therefore each part of the system can work independently without influence each other. With the discussion of the performances of HAB and home networking, the switch bridge is a suitable technology for reducing the dies size and power consumption. The switch bridge designed in this paper connects two CPU systems and two others digital circuitry components together. To the CPU systems, common digital circuitry is a part of the CPU system with the bridge. The architecture and logic function of the switch bridge is analyzed in detail and simulated. The simulation results demonstrate that the connection bridge can not only supply the connection of two CPU and two common components, include display module and RAM, but also increased the running speed and system performance.
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| 7. |
- Lu, C. L., et al.
(författare)
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Charge-order breaking and ferromagnetism in La0.4Ca0.6MnO3 nanoparticles
- 2007
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Ingår i: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 91:3, s. 032502-
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Tidskriftsartikel (refereegranskat)abstract
- La0.4Ca0.6MnO3 nanoparticles of grain size as small as similar to 20 nm are prepared and their magnetic behaviors are investigated in order to understand the size effect of the charge ordering in manganites. The highly stable charge-ordered state can be significantly suppressed upon reduction of the grain size down to nanometer scale, while the ferromagnetism is enhanced. The magnetic phase separation due to the competition between ferromagnetic state and charge-ordered state as well as the surface spin disordering is responsible for the spin-glass-like state at low temperature. (C) 2007 American Institute of Physics.
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