葡萄栽培品种花芽高节位分化观察研究

在管理良好、植株健壮的条件下，葡萄花芽高节位分化是一个普遍的现象。一年生枝从低节位到高节位均可形成正常的花芽，并能正常开花结果，而且高节位分化花芽对当年的果实品质及次年的花芽分化无不良的影响。合理利用这一特性对促进葡萄幼树早丰产有重要的指导意义。     

双河油田特高含水后期开发阶段注采结构调整的实践与应用

针对双河油田的注采结构的现状及特征,通过近几年来在注采结构调整方面的实践与应用,总结出了油田在特高含水后期开发阶段,实现油田控水稳油目标的途径和方法,注水结构调整主要是结合地质特点,减少欠注层段,减少和控制不合理超注井层段和改善吸水剖面;在采液结构调整上,控制高含水层段的注入,加强中低渗透层段的注入,封堵高渗透、高水淹干扰层段,解放动用较差的中低渗透层段,改善平面上采出不平衡的状况。通过实施注采结构调整,双河油田在特高含水后期实现了高效开发。     

纵横波测井资料在储层评价中的应用

将弹性波基础理论，Gasman理论，Biot理论和实验研究结果相结合，探讨了沉积岩地层中速度和弹性模量，弹性模量和孔隙度，剪切模量和孔隙度，速度和孔隙度，孔隙度和Biot系数之间的关系，利用从各种声学测井资料中提取出的P波和S波时差（或速度）定量评价地层孔隙度和骨架物质，辅以泥质指示测井曲线，可以计算地层孔隙度，饱和度，岩性等参数，在M，Krief方法的基础上，采用优化算法寻求适合于任何岩性地层的孔隙度与Biot系数之间的关系式，提高了Biot系数的计算精度，该评价方法有坚实的实验基础和理论基础，评价结果与实验室岩心分析数据吻合。     

桩帽处理对灌注桩高应变检测的影响

本文给出砼灌注桩高应变检测中桩帽的施工工艺 ,并讨论其对测试结果的影响。     

Yield Stress and Microstructure of Set Yogurt Made from High Hydrostatic Pressure-Treated Full Fat Milk

ABSTRACT: Set yogurts were prepared from fortified milk subjected to the following processes: (a) Thermal process (85C,°C,35 min), (b) High hydrostatic pressure process (193 or 676 MPa for 5 or 30 min), and (c) Nonprocessed milk (control). Yogurts from milk treated with 676 MPa for 30 min exhibited similar yield stress and water-holding capacity (WHC) to yogurts from heated milk. Transmission Electron Microscopy (TEM) micrographs exhibited small round casein micelle aggregates without appendages in yogurts from heated milk. Yogurts from milk treated with 193 MPa and untreated milk exhibited low yield stress, low WHC, and large clusters of coalesced micelles. Mechanisms for gel formation are discussed.     

用于千兆以太网基带铜缆接收器均衡的甚高频自适应 连续时间Gm-C 二阶带通滤波器的研究和设计

本文设计了用于千兆以太网基带铜缆接收器均衡的甚高频自适应连续时间Gm-C二阶带通滤波器。基于最陡梯度下降算法，带通滤波器的零点在57－340MHz的频率范围内可以自适应地调节，中心频率为1.278GHz。通过外接电阻伺服环路，滤波器中跨导转换器的跨导值不受工艺偏差和温度变化的影响，采用CSMC－HJ0.6μm CMOS工艺器件模型，用Cadence Spectres仿真器仿真了设计的自适应滤波器电路，仿真结果验证了设计原理和设计的电路。系统的最长学习时间为880个参考时钟周期。     

The Loss of Hydrophobic Polypeptides during Fermentation and Conditioning of High Gravity and Low Gravity Brewed Beer

The object of this study was to investigate the loss of hydrophobic polypeptides, which are important for foam quality and stability in finished beer. Loss of hydrophobic polypeptide due to fermenter foaming occurs during transfer of fermented wort since a gradient of hydrophobic polypeptides towards the surface is created during fermentation. Due to higher polyphenol levels in high gravity (20°Plato) wort, more hydrophobic polypeptides are lost due to cold break (cold trub) precipitation compared to low gravity (12°Plato) wort. Another important factor affecting the loss of hydrophobic polypeptides could be proteinase A activity during fermentation, especially in high gravity fermentation where the yeast is exposed the higher stress. During high gravity fermentation, where osmotic pressures are higher, ethanol levels become greater, and nitrogen‐carbohydrate ratios are lower, more proteinase A is released by the yeast. This release of proteinase A into fermenting wort could have implications for the foam stability of the finished product.     

连续生产型炉窑排烟温度合理性探讨

推导了热效率变化百分率和单产标准煤耗变化百分率的计算公式 ,通过计算说明了连续生产型炉窑依靠高效余热回收而实施高烟温生产操作 ,实际上是增加而不是减少燃料消耗 ,据此 ,指出“三高一低”理论的不完全正确和HTAC技术在此类炉窑上的不可用性。论述了连续生产型炉窑低烟温的合理性 ,并提出基于低烟温的“双高低”理论和“烟混型高温低氧燃烧法” ,促使连续生产型炉窑向高效节能环保方向发展     

Facile modifications of polyimide via chloromethylation: II. Synthesis and characterization of thermocurable transparent polyimide having methylene acrylate side groups

From chloromethylated polyimide, a useful starting material for modification of aromatic polyimides, a thermocurable transparent polyimide having acrylate side groups was prepared. In the presence of 1,8‐diazabicyclo[5,4,0]undec‐7‐ene, chloromethylated polyimide was esterified with acrylic acid to synthesize poly(imide methylene acrylate). The polymer was soluble in organic solvent, which makes it possible to prepare a planar film by spin coating. The polymer film became insoluble after thermal treatment at 230 °C for 30 min. Optical transparency of the film at 400 nm (for 1 µm thickness) was higher than 98 % and not affected by further heating at 230 °C for 250 min. Adhesion properties measured by the ASTM D3359‐B method ranged from 4B to 5B. Preliminary results of planarization testing showed a high degree of planarization (DOP) value (>0.53). These properties demonstrate that poly(imide methylene acrylate) could be utilized as a thermocurable transparent material in fabricating display devices such as TFT‐LCD. Copyright © 2004 Society of Chemical Industry