气泡在垂直向上流动液体中的形成

研究了液体垂直向上流动、气体水平引入时，导管端头处形成的气泡的尺寸大小。考察了液体平均流速、气体流量和导管直径对气泡脱离尺寸大小的影响。在力平衡假设的基础上，获得了预测气泡脱离尺寸的关系式，预测值与测量值比较，结果令人满意。     

相转移卡宾法合成2_甲基_2_戊烯酸

本文采用相转移卡宾法合成2-甲基-2-戊烯酸,收率为42.5‰,产品的香息较好,结果较佳.     

矿井轨道运输信、集、闭系统模拟

编制了井下运输信、集、闭系统计算饥模拟模型ＴＲＡＮ—２．提出了信号区间设置的原则和方法．根据某大型矿井的实际生产系统．确定了最佳的信号区间长度及信号点个数．并给出了矿井不同发展阶段系统的能力及相应的信号设置．对产量、线路通过能力及信号位置作了大量方案的动态分析。     

微波技术提取油菜花粉多糖工艺的研究

以超临界CO2萃取脂肪酸后的油菜花粉为原料，研究微波技术提取油菜花粉多糖的工艺．本文考察了浸提固液比、微波强度、微波处理时间对多糖提取率的影响，并用正交法设计得出最佳工艺条件：浸提固液比为1：30，微波强度高档，微波处理时间10min．     

Correlation of coral fluorescence with nearshore rainfall and runoff in Hainan Island, South China Sea

Under UV-laser excitation, the Porites coral from Longwan bay waters. Hainan Island, could emit yellow-green fluorescence. After fitting the data of the fluorescent intensity (FI) of the coral with the rainfall (RF) in nearshore area of Qionghai. a good relationship between FI and RF was found with a linear formula of RF = 889 — 4.54 FI and a correlation coefficient of 0.78. Based on this formula, the rainfall sequence from 1982 to 1997 has been reconstructed. The peak annual rainfall is usually related to global El nino events. By fitting the data of the fluorescent intensity and the runoff (RO). a quadric formula was obtained as RO = — 0.0279FI —18.59 FI - 950.9 with a correlation coefficient of 0.74. The reconstructed runoff sequence from 1982 to 1997 coincided with the rainfall occurrence. The results indicate that flood and drought incidents in coastal areas of the south China are affected by global change to a great extent.     

快速循环流化床上升管的轴向固体浓度分布

根据因次分析与气固流动压力损失提出了快速循环流化床中压力沿床高分布的计算式，由此公式来计算轴向固体容积率．本文使用此式对从众多作者不同条件下取得的数据进行拟合，表明该式能与不同系统的实验数据很好地符合，为快速床设计计算提供了依据     

The symmetric solutions of affiliated value model

0　IntroductionIntheprocessofR&Ditem ,thereisusuallycompetition .ManyfirmswanttoinvestR&Dtoobtainapatent.Lury[1 ] gaveanequilibriuminvestmentundertheconditionofone timeinvestmentandcontinuousinvestmentwhenthepayoffwasafixedprize.Ref.[2 ]analyzedtheeffectofinformationsharinginR&D .TherearemanyliteraturesaboutanalysisofR&DlevelswhenfirmscompeteinoutputmarketafterR&Dsucceeds[3 ,4] .Additionally ,todecideinvestmentlevel,therearemanyliteraturesaboutR&Ditem’spricing .MondherBellalah[5] ,K .…     

抚顺煤热解过程中N2生成的实验研究

利用固定床反应器在600~1 300℃范围内进行抚顺煤的热解实验,研究了热解过程中燃料N向N2的转化,以及脱除矿物质元素和添加催化剂对N2生成的影响.升温速率是20℃/min,热解载气为高纯He,热解产生的N2用气相色谱方法定量分析.实验结果表明,抚顺原煤在600℃热解时N2生成量很少,不足10%.随着热解温度的进一步升高,煤中N向N2的转化率几乎呈线性增长.N2的来源一是直接从煤的大分子结构中释放,二是由矿物质元素与燃料氮之间的固相反应产生.抚顺煤脱除矿物质后热解时,N2的生成量明显减少.Ti、Na、K、Fe、Ca类矿物质元素的加入不同程度地促进了N2生成,而且其作用温度区间各不相同.     

Conformational analysis on anti-HIV-1 peptide T22([Tyr5,12,Lys7]-polyphemusinⅡ )

The conformational scan of anti-HIV peptide T22 ([Tyrsup>5,12, Lys⁷]-polyphemusinⅡ) backbone on a deformed potential energy surface (PES) was performed using the potential smoothing searching (PSS) protocol. All located minima were then transferred to the original PES using undeformed optimized potentials for liquid simulations (OPLS) potential function, and minimized by multi-conformer minimization (MCM). For solution-phase calculations, the GB/SA continuum model for water was used. This application of PSS integrated with MCM is proved a feasible method for solving the multiple-minimum problem in the conformational analysis of flexible molecules with cyclic structure.