Effect of harvesting time and fruit size on titratable acidity, soluble solid and distribution of limonin in Thai tangerine juice

The effect of fruit size and harvesting of Thai tangerine fruit ( Citrus reticulata , Blanco) at different growth stages, 8–12 months after fruit set, on the distribution of limonin in whole fruit as well as in the individual fruit parts and extracted juice was investigated. The highest limonin concentration was observed in seed, followed by albedo, flavedo, segment membrane and juice sacs in decreasing order. The limonin concentration in juice as well as in whole fruit was decreased when fruit was harvested 8–12 months of fruit set. Increasing harvesting time from 8 to 12 months showed corresponding decreases in the amount of limonin in flavedo, albedo and seed. There was a decrease in titrable acidity and increase in total soluble solid and total soluble solid/titrable acidity ratio of juice with a later than normal harvesting time. However, fruit size showed no effect on limonin content and other properties of juice extracted from tangerine.     

对聚合物驱单井效果评价的几点认识

通过对喇嘛甸油田聚合物驱单井效果分析，给出了采油井阶段效果评价方法，即单井见效时间和含水回升时间早晚的确定方法，单井见效时间取决于油层条件，注聚前含油饱和度及累计采出地下体积倍数，单井含水回升时间主要取决于聚驱阶段剩余储量采出程度，根据单井阶段评价结果，对试验区进行跟踪调整，在单井阶段效果评价的基础上，对单井最终效果采用吨聚增油量和聚驱阶段剩余储量采收率来进行客观，有效的评价，对聚驱产量预测具有一定指导意义。     

MTC技术在百色盆地林逢稠油热采井的研究与应用

针对林逢稠油热采井的地质特点和对固井质量的要求开发了早期强度高,低渗透,微膨胀,抗高温和流变性好的MTC矿渣泥浆固化液,并分析了矿渣泥浆固化液技术的固化机理及特点。结果表明,MTC水泥浆具有低温防水侵,强度发展迅速,固化体耐高温的特性。MTC技术实用性强,施工简单,水泥浆体系流变性好,密度易于控制,它与钻井液有良好的相容性,提高了林逢稠油热采井的固井质量。     

时效处理对 TiNi 合金相变与性能的影响

通过用ＴＥＭ等方法研究热处理制度（固溶处理、时效处理）对ＴｉＮｉ合金相变组织和性能的影响，找出了最佳热处理制度。结果表明，在４５０～５００℃进行时效处理，Ｔｉ－５０．８ａｔ％Ｎｉ的合金出现了大量的Ｔｉ３Ｎｉ４相，且恢复率最高。     

Equilibrium Studies of the System'(Fe,Co)O'–(Fe,Co)3O4 by Solid-State emf Measurements in the Temperature Range 970 to 1370 K

The equilibrium reaction 3'(Fe, Co)O'( ss ) +1/2O₂ ( g ) ⇄ (Fe, Co)₃O₄( ss ) was studied in the temperature range 970 to 1370 K for seven different total compositions of molar ratios 0.5 < Fe/(Fe + Co) ≤ 1.0. The equilibrium pressures of oxygen were determined by using galvanic cells incorporating calcia stabilized zirconia as solid electrolyte and the Fe/Co ratios in the solid-solution phases by wavelength dispersive spectrometry microprobe analyses. The activities of 'FeO' in the cobaltowüstite phase were then derived from the experimental results obtained.     

用于疏通油水井的脉冲放电技术

评价了各种不同的解堵技术，指出冲击波解堵是一种很有发展前途的技术。介绍了液中脉冲放电产生冲击波的基本原理，并由此研制出了一套井下脉冲放电油水井处理设备样机。通过现场试验，表明用冲击波疏通油井能较好地解除油井污染，提高采收率。     

Boundary Constrained Swept Surfaces for Modelling and Animation

Due to their simplicity and intuitiveness, swept surfaces are widely used in many surface modelling applications. In this paper, we present a versatile swept surface technique called the boundary constrained swept surfaces. The most distinct feature is its ability to satisfy boundary constraints, including the shape and tangent conditions at the boundaries of a swept surface. This permits significantly varying surfaces to be both modelled and smoothly assembled, leading to the construction of complex objects. The representation, similar to an ordinary swept surface, is analytical in nature and thus it is light in storage cost and numerically very stable to compute. We also introduce a number of useful shape manipulation tools, such as sculpting forces, to deform a surface both locally and globally. In addition to being a complementary method to the mainstream surface modelling and deformation techniques, we have found it very effective in automatically rebuilding existing complex models. Model reconstruction is arguably one of the most laborious and expensive tasks in modelling complex animated characters. We demonstrate how our technique can be used to automate this process.     

光纤定时恢复器用声表面波低损耗滤波器

介绍了定时恢复器对声表面波滤波器的基本要求及实现低损耗的方法，并给出了实验结果。     

从氯化铅渣中回收铅铋的研究

本文以柿竹园有色金属矿粗铋火法精炼、气化除铅产出的铅渣为原料，在常压下采用氯化钠水溶液进行浸出处理，有效地分离了铅和铋，并将铅制成了化工产品黄丹及硫酸铅     

Trifluoromethanesulphonic acid catalysed transalkylation between tetrabromobisphenol-a and toluene for the production of 2,6-dibromophenol

The preparation of 2,6-dibromophenol is described. This compound, useful as raw material for brominated poly(phenyleneoxide) and pyrogallol or derived pharmaceuticals/pesticides, was prepared in 80% (isolated) yield by a transalkylation reaction between tetrabromobisphenol-A and toluene. The catalyst, trifluoromethanesulphonic acid, can be simply recovered and recycled. Perfluorinated resin sulphonic acid (NAFION-H®, DuPont) did not effectively catalyse this transalkylation.