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| 1 | 周围湿度对极早产儿皮肤屏障成熟度的影响显示文摘Objectives:To test the hypothesis that the level of relative humidity (RH) in which preterm infants are nursed might in-fluence their postnatal skin maturation. Study design:In 22 preterm infants (GA 23-27 weeks),transepidermal water loss(TEWL) was determined at postnatal ages (PNA) of 0,3,7,14,and 28 days. At a PNA of 7 days,the infants were randomized to care at either 50%or 75%RH. Results:TEWL decreased at a slower rate in infants nursed at the higher RH. At a PNA of 28 days,TEWL was about twice as high in infants nursed at 75%RH (22 ±2 g/m2 h) than in those nursed at 50%RH(13 ±1 g/m2 h; P < 0.001). Conclusions:The results indicate that the level of RH influences skin barrier development,with more rapid barrier formation in infants nursed at a lower RH.The findings have an impact on strategies for promoting skinbarrier integrity in extremely preterm infants. | U■ren J. Sjrs G. Sedin G. 贺莉 | 2006 | 世界核心医学期刊文摘(儿科学分册)2006，0，12： | 1 |
| 2 | Characterization and molecular mapping of Yr52 for high-temperature adult-plant resistance to stripe rust in spring wheat germplasm PI 183527显示文摘 | Ren RS Wang MN Chen XM | 2012 | Theoretical and Applied Genetics2012，125，： | 1 |
| 3 | Age-dependent external root re- sorption during tooth movement in rats 显示文摘 | Ren Y Maltha JC Liem RS | 2008 | Aeta Odontol Scand2008，66，： | 1 |
| 4 | Comparison of central corneal thickness measured by four different pachymeters 显示文摘 | Myrowitz EH Ren S Chuck RS | 2007 | Eye Contact Lens2007，33，3： | 1 |
| 5 | Age-dependent external root resorption during tooth movement in rats 显示文摘 | Ren Y Maltha JC Liem RS | 2008 | Acta Odontol Scand2008，66，2： | 1 |
| 6 | Age-dependent external root resorption during tooth movement in rats显示文摘 | Ren Y1 Maltha JC Liem RS | 2008 | Acta Odontol Scand2008，66，2： | 1 |
| 7 | Transforming Growth Factor-Beta Inhibits Apoptosis Induced by Beta-Amyloid Peptide Fragment 25-35 in Cultured Neuronal Cells 显示文摘 | Kim ES Kim RS Ren RF | 1998 | Brain Res Mol Brain Res1998，62，2： | 1 |
| 8 | Research on Characteristics of Density Current Under the Action of Waves显示文摘In this paper,the characteristics of density current under the action of waves are describedwith the help of flume experiment and theoretical analysis.The study shows that turbid water under the ac-tion of the waves can present three types of motion,i.e.significant stratification,fragile stratification andstrong mixing.The motion of turbid water presents significant stratification when(H/D)/△ρ/ρ1/2≤4.5,generally this state is known as density current.The formulas of motionvelocity,thickness,and discharge of density current moving on horizontal bottom are derived by use of ba-sic equations such as momemtum equation,equation of energy conservation and continuity equation offluid.The time-average velocity and the thickness of density current under the action of waves have a rela-tionship with such parameters as relative density(△ρ/ρ),wave height(H),and water depth(D).Whenthese parameters are determined,the time-average thickness and motion velocity of density current are al-so determined.The | Li, DS Shen, Y Ren, RS Chen, Y | 1997 | China Ocean Engineering1997，12，1： | 0 |
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