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| 1 | The efficacy and safety of abatacept in patients with non–life‐threatening manifestations of systemic lupus erythematosus: Results of a twelve‐month, multicenter, exploratory, phase IIb, randomized, double‐blind, placebo‐controlled trial显示文摘 | J. T.Merrill R.Burgos‐Vargas R.Westhovens A.Chalmers D.D’Cruz D. J.Wallace S. C.Bae L.Sigal J.‐C.Becker S.Kelly K.Raghupathi T.Li Y.Peng M.Kinaszczuk P.Nash | 2010 | Arthritis & Rheumatism2010,,10: | 1 |
| 2 | 250MPa喷油压力对轻型柴油机喷油器几何结构的影响显示文摘研究了在250MPa喷油压力下轻型柴油机喷油器喷嘴几何结构对燃油耗和废气排放特性的影响。试验中采用的发动机是1台排量为0.4L的单缸压燃式发动机。柴油燃料喷射装置在250MPa喷油压力条件下工作。分别比较了具有8、9和10个喷孔的3种喷油器。随喷油器喷孔数的增加,喷孔直径缩小,由105μm减小至95μm,点火延迟缩短。在不采用废气再循环(EGR)的条件下,具有多喷孔数的喷油器颗粒物(PM)排放更少。该结果表明,小喷孔直径改善了燃油雾化效果,燃油喷雾面积与大喷孔数喷油器保持相同。尽管如此,这三种喷油器在更高EGR率和更高喷油压力下的氮氧化物(NOx)和PM折中关系类似。高喷油压力对减少PM排放效果最为明显,而在这些条件下,喷孔几何结构对PM排放几乎不产生影响。在这种条件下,更大喷孔直径导致的喷雾贯穿距离增大也有助于减少PM排放。由于这三种喷油器具有相同的燃油体积流量和类似的缸内压力轨迹,因此,其指示燃油消耗率均处于相同的水平。另外,在采用相同喷孔直径(95μm)条件下,验证了8孔和10孔喷油器喷孔数的影响。喷油速率越高,喷雾次数越多,喷孔数由8增至10,燃油耗越低,PM排放越少。试验结果为车用发动机喷油器喷嘴喷孔数和喷孔直径优化设计提供了参考标准。 | W.Cho C.Bae Y.Kim 田永海(译) 孙丹红(译) | 2019 | 汽车与新动力2019,2,1: | 1 |
| 3 | Neuropsychiatric events at the time of diagnosis of systemic lupus erythematosus: An international inception cohort study显示文摘 | J. G.Hanly M. B.Urowitz J.Sanchez‐Guerrero S. C.Bae C.Gordon D. J.Wallace D.Isenberg G. S.Alarcón A.Clarke S.Bernatsky J. T.Merrill M.Petri M. A.Dooley D.Gladman P. R.Fortin K.Steinsson I.Bruce S.Manzi M.Khamashta A.Zoma C.Aranow E.Ginzler R.Van Vollenhov | 2007 | Arthritis & Rheumatism2007,,1: | 1 |
| 4 | 喷油策略对柴油机低温燃烧-传统燃烧模式切换的影响显示文摘低温燃烧(LTC)通常只在低负荷范围内可行,因此在LTC的实际应用中,发动机工作模式应在低负荷的LTC模式与高负荷的传统模式之间频繁来回切换。在此研究了喷油策略对单缸重型柴油机模式切换的平稳性和排放的影响。废气再循环(EGR)系统管路由1个可以在单次发动机循环内开关EGR回路的伺服阀控制。撷取EGR阀关闭后的10次循环作为过渡期,其间多方改变喷油正时和喷油量(即喷油策略),研究了对指示平均有效压力(IMEP)稳定性和排放的影响。系统研究了IMEP稳定性,通过改变10次过渡循环中任一循环内的喷油正时和喷油量,观察哪些循环对IMEP稳定性有显著影响。采用快速火焰电离检测器(FFID)测量碳氢浓度,随着曲轴转角的变化,研究模式切换过程中循环之间EGR,以及排放的变化。结果表明,从LTC模式到传统模式的切换过程中,喷油正时和喷油量平缓的非线性转换是有益的,并且应优先在喷油正时提前和EGR水平高时进行转换。为了使模式切换平稳,应在一些循环内将喷油量减至低于起始水平值。最终获得的喷油策略在稳定性和排放方面有相当大的改善,与简单粗放地转换喷油正时和喷油量的案例相比,整个模式切换中的IMEP变化系数降低了8%,碳氢排放降低了41%。 | B.Rohani S.Park C.Bae 左彤梅 纪有君 | 2016 | 国外内燃机2016,48,5: | 0 |
| 5 | Wireless actuation and control of ionic polymer-metal composite actuator using a microwave link显示文摘The ionic polymer–metal composite(IPMC),a type of electroactive polymer(EAP)actuator,has created a unique opportunity to design robots that mimic the motion of biological systems due to its soft structure and operation at a low voltage.Although this polymer actuator has strong potential for a next-generation artificial muscle actuator,it has been observed by many researchers that supplying actuation voltages in multiple locations is challenging.In robotic applications,a tethered operation is prohibited and the battery weight can be critical for actual implementation.In this research,the remote unit can provide necessary power and control signals to the target mobile robot units actuated by IPMCs.This research addresses a novel approach of using a wireless power link between the IPMC and a remote unit using microstrip patch antennas designed on the electrode surface of the IPMC for transmitting the power.Frequency modulation of the microwave is proposed to selectively actuate a particular portion of the IPMC where the matching patch antenna pattern is located.This approach can be especially useful for long-term operation of small-scale locomotion units and avoids problems caused by complex internal wiring often observed in various types of biologically inspired robots. | J.S.Lee W.Yim C.Bae K.J.Kim | 2012 | International Journal of Smart and Nano Materials2012,3,4: | 0 |