Methods: 24 premature infants were chosen and kept in the supine or prone positions. Fluid retention volume in the stomach was recorded and compared statistically. 方法:对24例早产儿进行自身不同卧位比较,分别于喂养后取仰卧位和俯卧位,记录胃内潴留液量、胃食管反流发生次数、合并呼吸暂停次数。
Evaluation of the Octanol/ Water Partition Coefficient of Aromatic Hydrocarbons by Relative Specific Retention Volume of Gas Chromatography 利用气相色谱相对比保留体积估算芳烃的正辛醇/水分配系数
The retention volume of solute is related to the micellar concentration by theoretical treatment, through which the solute distribution coefficient between micelle and aqueous phase could be obtained. 理论处理的结果表明,溶质的保留体积与胶束浓度有关;通过溶质的保留体积可得到溶质在胶束和水相间的分配系数。
The effluent concentration profile model of polymer flooding in Daqing oilfield reservoir condition has been determined by experiment, and inaccessible pore volume and retention pore volume bas been obtained. 实验测得了大庆油层条件下的聚合物驱产出液浓度剖面模型,求出了相应的不可入孔隙体积和吸附滞留孔隙体积。
Results: The prone group had a lower fluid retention volume. There was a significant difference between the two groups ( P < 0.001). 结果:俯卧位潴留液量少于仰卧位,二组比较差异有统计学意义(P<0.001);
The dependence of the spreading factor on the retention volume deduced from a simple theoretical approach may be expressed by a formula with four physically meaningful and experimentally determinable parameters. 简单的理论分析导出了一个方程以表示扩展因子的保留体积依赖性,其中包括四个具有明确物理意义并可实验测量的参数。
A silver-coated column with liquid phase PEG-400 of 80 metres long and 0.20 mm in internal diameter, can serve for good resolution of a complex mixture of 40 oxygen compounds within one hour. In addition, retention volume data for 46 organic oxygenated compounds have been recorded. 在长80米和内径0.2毫米的镀银毛细管色谱柱上,在60分钟内可以一次使40种含氧化合物获得良好分离,也测得了46种含氧化合物的相对保留值。
Irradiation experiments carried out in research reactors and operation experiences gained from experiment and prototype reactors have proved that cp has a series of unique properties, especially, its high fission products retention capability and high volume stability. 大量的辐照试验和三座试验难及两座原型推的运行经验表明,cp具有一系列独特的性质,特别是其体积稳定性好,裂变产物滞留能力强。
A new idea, called ideal retention volume, is proposed. 提出了理想保留体积(V理)的概念。
Concentration Effect on GPC Retention Volume 浓度效应对GPC保留体积的影响及其分离机理的讨论
Evaluation of non-aqueous solvent for recovery of maleic anhydride by specific retention volume method through gas chromatography 气相色谱比保留体积法评选顺丁烯二酸酐非水回收用溶剂
The jet loop reactor technology combines the advantages of both jet and loop flow, has the characteristics of high mass transfer efficiency, short hydraulic retention time, high volume loading and capacity of anti impact load etc. 喷射环流反应器结合了喷射与环流的技术优势,具有传质效率高、水力停留时间短、容积负荷高、抗冲击负荷能力强等特点。
The coefficient ( K_oc) of organic carbon adsorption on river sediment can be estimated by determining the specific retention volume ( V_g) of organic compounds on the sediment by gas chromatography. 本文提出用有机物在沉积物上的色谱比保留体积(Vg)值估算沉积物有机碳吸附系数(K∝)。
The curves of specific retention volume vs exchange ratio pass through a maximum when the exchange ratio is within 32-41%. 比保留体积随交换度变化的曲线在交换度为32&41%处有极大值。
Discussion on the Concept Problem of the Specific Retention Volume in Gas Chromatography 关于气相色谱比保留体积概念问题的商榷
The wicking height, water retention value, water drop penetrating area and volume, natural dry rate, air permeable volume of the fabrics were tested respectively and the effect of moisture absorbent and dry fast was evaluated by comprehensive values. 分别测试了这6种面料的毛细高度、保水率、水滴渗透面积和体积、自然干燥率、透气量,采用多项综合值对吸湿快干效果加以评定。
The infinite dilution activity coefficient γ ∞ was measured by specific retention volume method through gas chromatography, and the theoretical yield was calculated by using the least square regression method. 通过气相色谱比保留体积法测定了顺丁烯二酸酐在有机溶剂中的无限稀释活度系数γ∞,采用最小二乘法回归得顺丁烯二酸酐的理论收率。
The results showed that sourdough improved the gas retention capacity and increased the bread specific volume. 结果表明,酸面团可以提高面团的持气率,改善面团的持气性,增大面包的比容。
We Get the best reactor hydraulic retention time and speed, through the adjustment of water volume and speed. 通过对进水水量及转速的调整,得到了反应器的最佳水力停留时间和转速。
Next, the hydraulic parameters which included hydraulic retention time, effective volume fraction and hydraulic efficiency were obtained using chloride tracer. The conclusion were obtained by the analysis of hydraulic parameters and flow patterns. 然后通过氯化钠为示踪剂的脉冲示踪实验,计算出水力停留时间,有效体积比等水力学参数,并对其进行水力效率评价,对流态及水力学参数进行分析,得出结论。