Bi_(2)Sr_(2-x)LaxCu_(1)O_(6+δ)(La-2201)thin films were successfully prepared on(100)SrTiO_(3) and(100)LaAIO_(3) substrates by in-situ dc-magnetron sputtering process.A series compensated 2201 targets of La^(3+)substi...Bi_(2)Sr_(2-x)LaxCu_(1)O_(6+δ)(La-2201)thin films were successfully prepared on(100)SrTiO_(3) and(100)LaAIO_(3) substrates by in-situ dc-magnetron sputtering process.A series compensated 2201 targets of La^(3+)substitution contents for Sr^(2+)were studied for growing 2201 phase thin films.The superconducting zero resistance temperature T_(c,0) reached 19K.X-ray diffraction analyses showed that films oriented with c-axis perpendicular to the substrate surface and their lattice parameters are around 2.43-2.46nm.Ф-scan and rocking curve show a good epitaxial growth and crystallisation of the films.展开更多
In order to increase the applying rate of liquid fertilizer and reduce environmental pollution, a slave computer control system for applying variable-rate liquid fertilizer was designed. The system used SMC as core pr...In order to increase the applying rate of liquid fertilizer and reduce environmental pollution, a slave computer control system for applying variable-rate liquid fertilizer was designed. The system used SMC as core processor and electrically controlled pressure regulator as execution component. The characteristic equation of the system was obtained by using classical control theory. Results indicated that the characteristic equation met the requirements of routh-criterion, which indicated the working process of the system was stable. Performance of the slave computer was verified via bench tests. Results demonstrated that there was no significant influence on the response from interclass error. The fertilization error was less than 0.9, and the fertilization accuracy was larger than 97%. The liquid fertilizer emitted by the fertilizing devices had no significant difference in uniformity, which met the demands of the slave computer control system for applying variable-rate liquid fertilizer.展开更多
文摘目的通过持续质量改进(continuous quality improvement,CQI)的管理方法来干预维持性血液透析患者的蛋白质-能量消耗并探讨其影响。方法选取2016年7月至2017年6月在江阴市人民医院血液净化中心行常规血液透析的85例存在蛋白质-能量消耗(protein-energy wasting,PEW)的患者,建立持续质量改进团队及应用持续质量改进方案,管理对象包括患者及其家属,先后在治疗过程中实施“PDCA”[计划(plan)、实施(do)、检验(check)、应用(act)]步骤,观察期为12个月,比较持续质量改进前后的血清白蛋白(serum albumin,Alb)、血清前白蛋白(pre-albumin,PA)、转铁蛋白(transferrin,TF)、血清胆固醇(serum cholesterol,Tch)、血红蛋白(hemoglobin,Hb)、血肌酐(serum creatinine,Scr)、尿素氮(urea nitrogen,BUN)、血清超敏C反应蛋白(serum hypersensitive c-reactive protein Hs-CRP)、体重指数(body mass index,BMI)、中臂围(midarm circumference,MAC)、中臂肌围(mid-arm circumference,MAMC)、标准化蛋白代谢率(normalized protein catabolic rate,nPCR)、血钙、血磷、全段甲状旁腺素水平(intact parathyroid hormone,iPTH)、改良主观综合营养评估(modified quantitative and global assessment,MQSGA)。观察持续质量改进对这些指标的影响。结果在持续质量改进后,Alb(g/L)、PA(mg/L)、TF(mg/L)、Tch(mmol/L)、Hb(g/L)、BMI(kg/m^(2))水平均较前上升,分别为34.34±3.97比37.26±3.33、252.9±41.7比295.1±39.0、1.52±0.24比1.99±0.25、2.93±0.84比4.23±0.97、83.88±16.75比94.12±13.46、27.58±6.84比28.16±5.78,且均P<0.05,差异有统计学意义。Scr、BUN水平在CQI前后改变不大(t=0.161,P=0.873、t=0.549,P=0.588)。Hs-CRP水平由(20.85±2.09)mg/L下降至(13.15±1.74)mg/L(t=5.02,P<0.01)。在营养指标评估方面,MAC由(22.02±1.63)mm上升至(24.81±1.26)mm(t=5.02,P<0.01),MAMC由(20.68±1.47)mm上升至(22.74±1.40)mm(t=2.603,P=0.017),nPCR由(0.85±0.92)g·kg^(-1)·d^(-1)上升至(1.21±0.21)g·kg^(-1)·d^(-1)(t=1.154,P=0.022),MQSGA轻度比例由77.65%升至88.23%(χ^(2)=4.61,P=0.002),中度比例由18.82%降至10.59%(χ^(2)=3.69,P=0.017),重度比例由3.50%降至1.33%(χ^(2)=5.05,P<0.001)。血钙水平前后波动较小(t=0.629,P=0.537),达标比例由52.0%上升至66.7%(χ^(2)=2.36,P<0.05);血磷平均水平由(2.11±0.24)mmol/L降至(1.80±0.23)mmol/L(t=-0.459,P<0.001),达标比例由19.04%上升至47.62%(χ^(2)=5.13,P<0.001);iPTH水平由(40.79±18.67)pmol/L下降至(24.41±9.82)pmol/L(t=-5.566,P<0.001),达标比例由47.62%上升至71.43%(χ^(2)=4.69,P<0.001)。结论CQI能够显著改善患者的综合营养状况,同时患者的血钙、血磷及iPTH达标比例都得到明显的提升,且没有出现钙磷代谢紊乱,继发性甲状旁腺功能紊乱等状况。
文摘Bi_(2)Sr_(2-x)LaxCu_(1)O_(6+δ)(La-2201)thin films were successfully prepared on(100)SrTiO_(3) and(100)LaAIO_(3) substrates by in-situ dc-magnetron sputtering process.A series compensated 2201 targets of La^(3+)substitution contents for Sr^(2+)were studied for growing 2201 phase thin films.The superconducting zero resistance temperature T_(c,0) reached 19K.X-ray diffraction analyses showed that films oriented with c-axis perpendicular to the substrate surface and their lattice parameters are around 2.43-2.46nm.Ф-scan and rocking curve show a good epitaxial growth and crystallisation of the films.
基金Supported by the Science and Technology Research Project of the 12th Five-year Plan(2011BAD20B03-01)
文摘In order to increase the applying rate of liquid fertilizer and reduce environmental pollution, a slave computer control system for applying variable-rate liquid fertilizer was designed. The system used SMC as core processor and electrically controlled pressure regulator as execution component. The characteristic equation of the system was obtained by using classical control theory. Results indicated that the characteristic equation met the requirements of routh-criterion, which indicated the working process of the system was stable. Performance of the slave computer was verified via bench tests. Results demonstrated that there was no significant influence on the response from interclass error. The fertilization error was less than 0.9, and the fertilization accuracy was larger than 97%. The liquid fertilizer emitted by the fertilizing devices had no significant difference in uniformity, which met the demands of the slave computer control system for applying variable-rate liquid fertilizer.
