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| 1 | Ion engine grids:Function,main parameters,issues,configurations,geometries,materials and fabrication methods显示文摘Ion optics are crucial components of ion thrusters and the study of the different ion extraction solutions used since the beginning of the electric propulsion era is essential to understand the evolution of ion engines. This work describes ion engine grids' main functions, parameters and issues related to thermal expansion and sputter erosion, and then introduces a review of ion optics used for significant launched and tested ion thrusters since 1970. Configurations, geometries, materials and fabrication methods are analyzed to understand when typical ion thrusters use two or three grids, what are the thicknesses and aperture sizes of the screen, accelerator and decelerator grids, why molybdenum and carbon-based materials such as pyrolytic graphite and carbon–carbon are the best available options for ion optics and what is the manufacturing method for each material. | Miguel SANGREGORIO Kan XIE Ningfei WANG Ning GUO Zun ZHANG | 2018 | Chinese Journal of Aeronautics2018，31，8： | 4 |
| 2 | Human cd25(+)cd4(+)t regulatory cells suppress naive and memory T cell proliferation and can be expanded in vitro without loss of function显示文摘 | Levings MK Sangregorio R Roncarolo MG | 2001 | J Exp Med2001，193，11： | 1 |
| 3 | Human CD25+CD4+T regulatory cells suppress naive and memory T cellproliferation and can be expanded in vitro without loss of function 显示文摘 | Levings MK Sangregorio R Roncarolo MG | 2001 | J Exp Med2001，193，11： | 1 |
| 4 | Human CD25^+ CD4^+ T regulatory cells suppress naive and memory T cell Proliferation and can be expanded in vitro without loss of function 显示文摘 | LEVINGS M K SANGREGORIO R RONCAROLO M G | 2001 | J Exp Med2001，193，11： | 1 |
| 5 | Human CD25 ( + ) CD4 ( + ) T regulatory cells suppress naive and memory T cell pro- hferation and can be expanded in vitro without loss of function 显示文摘 | Levings MK Sangregorio R Roncarolo MG | 2001 | J Exp Med2001，193，11： | 1 |
| 6 | Human CD25^+ CD4^+ T regulatory cells suppress naive and memory T cell proliferation and can be expanded in vitro without loss of function显示文摘 | Levings M Sangregorio R Roncarolo MG | 2001 | J Exp Med2001，193，11： | 1 |
| 7 | Human CD25+CD4+ T suppressor cell clones produce transforming growth factor beta,but not interleukin 10,and are distinct from type 1 T regulatory cells显示文摘 | Sangregorio R Sartirana C | 2002 | J Exp Med2002，196，10： | 1 |
| 8 | IFN-alpha and IL-10 induce the differentiation of human type 1 T regulatory cells显示文摘 | Sangregorio R Galbiati F | 2001 | J Immunol2001，166，： | 1 |
| 9 | Human CD25^+CD4^+T suppressor cell clone produce transforming growth factor β,but not interleukin 10,and are distinct from type 1 T regulatory cells显示文摘 | Leving MK Sangregorio R Sartirana C | 2002 | J Exp Med2002，196，10： | 1 |
| 10 | Molecular engineering for single chain-magnet behavior in a one-dimen sional dysprosium-nitronyl nitroxide compound显示文摘 | Bogani L Sangregorio C Sessoli R | 2005 | Angew Chem Int Ed2005，44，： | 1 |
| 11 | Human CD4+ CD25 + T suppressor cell clones produce transforming growth factor β, but not in terleukin 10,and are distinct from type 1 T regulatory cells显示文摘 | Megan KL Sangregorio R Sartirana C | 2002 | J Exp Med2002，196，： | 1 |
| 12 | HumanCD4^+CD25^+T regulatory cells suppress naive and memory T cell Proliferation and can be expanded in vitro without loss of function显示文摘 | Levings MK Sangregorio R Roncarolo MG | 2001 | J Exp Med2001，193，11： | 1 |
| 13 | Human CD25+CD4+T suppressor cell clones produce transforming growth factor beta,but not interleukin 10,and are distinct from type 1 T regulatory cells显示文摘 | Sangregorio R Sartirana C | 2002 | J Exp Med2002，196，： | 1 |
| 14 | Human CD25 ( + ) CD4 ( + ) T suppressor cell clones produce transforming growth factor beta, but not interleukin 10, and are distinct from type 1 T regulatory cells 显示文摘 | Levings MK Sangregorio R Sartirana C Moschin AL Battaglia M Orban PC | 2002 | J Exp Med2002，196，10： | 1 |
| 15 | Human CD25^+ CD4^+ T cells suppress naive and memory T cell proliferation and can be expanded in vitro without loss of function显示文摘 | Levings MK Sangregorio R Roncarolo MG | 2001 | J Exp Med2001，193，： | 1 |
| 16 | Magnetic Nanoparticles in biomedicine 显示文摘 | A Lascialfari C Sangregorio | 2011 | Chimica oggi/Chemistry Today2011，29，： | 1 |
| 17 | IFN - alpha and IL- 10 induce the differentiation of human type 1 T regulatory cells显示文摘 | LEVINGS M K SANGREGORIO R GALBIATI F | 2001 | 166 (9) :5530 - 55392001，166，9： | 1 |
| 18 | Human CD25^+ CD4^+ T suppressor cell clones produce transforming growth factor β, but not interleukin 10, and are distinct from type 1 T regulatory cells 显示文摘 | Levings MK Sangregorio R Sartirana C | 2002 | J Exp Med2002，196，10： | 1 |
| 19 | Human CD4+ ,CD25+ regulatory T cells suppress naive and memory T cells proliferation and can he expanded in vitro without loss of function 显示文摘 | Levings MK Sangregorio R Roncarolo MG | 2001 | J Exp Med2001，193，11： | 1 |
| 20 | The influence of composition and porosity on the magnetic properties of FeCo-SiO2 nanocomposite aerogels 显示文摘 | Casu A Casula M F Comas A Falqui A Loche D Marras S Sangregorio C | 2008 | Physical Chemistry Chemical Physics2008，10，7： | 1 |
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