AN EXPERIMENTAL STUDY ON THE FORCING OF LARGE-SCALE HEAT SOURCES AND TOPOGRAPHY ON BAROCLINIC FLOW

The experiments show that the travelling waves strongly vacillate with time due to the topographic forcing. Otherwise in the experiments with the same imposed external conditions but without topography, the baroclinic waves would travel regularly with almost no vacillation. It was found that a prominent feature in the flow with the topographic forcing is large-scale wave vacillation with a period of 127 annulus rotations, which is equivalent to approximately 26 days in the Earth's atmosphere. The experiments also show that the role of topography is to modulate the unstable baroclinic waves both in space and in time.In the second part of this paper, a series of comparative experiments is introduced to study the influences of heat sources and topography on the large-scale baroclinic background flows defined as the flow patterns determined by Ω, the angular velocity of the annulus rotation and △T, the radial temperature difference between the inner and outer walls of the annulus. The flow patterns depend     

THREE-DIMENSIONAL NUMERICAL SIMULATION OF TROPICAL CYCLONE AND THE EFFECTS OF RADIATIVE PROCESSES ON IT

In this paper, a three-dimensional primitive equation numerical model includingvarious physical processes is constructed. Using this model, the development and thestructure of the tropical cyclone (typhoon) are first successfully simulated. Then theeffects of radiative processes on the development of the cyclone are investigated. Theradiative processes and their parameterization include long wave, short wave radiationand cloud type and cloudiness respectively. The results show that the tropical cyclonewill develop earlier and more quickly after the effect of radiative processes isincorporated, but the differences in intensity between the two cases with and withoutradiative processes at the final state are not evident. Only at the developing stage hasthe cyclone affected by radiation a sharper decrease in the surface pressure, a strongerwind and upward motion. a more obvious eye and eyewall, etc. All the results showthat the radiative processes are important in the earlier development stage of thetropica     

STUDY ON WAYS OF FORCING INTERCELLULAR CYTOPLASM AND CHROMATIN MIGRATION TO TRANSFER EXTERNAL GENETIC SUBSTANCES TO PLANT CELLS BY ARTIFICIAL MOTIVE FORCE

A new cell engineering technique (L. B. technique) was established in our Lab. At first, the physical and chemical methods were used to facilitate the reestablishment of intercellular contacts and plasmodesma channels between different parents, thus forcing cytoplasm and chromatin to pass the cell wall with different qualities and quantities from one cell to others, through the enlarged intercellular plasmodesma channels or the vulnerable regions and the holes on the cell wall formed differently in growth and thickness in the process of cell wall formation to introduce external genetic substances or gene groups into plant cells. There are different ways, frequencies and strengths for the migration between the cells in different growth and development regions or the same growth and development region. In this paper we advance the mechanism of cytoplasm and chromatin migration through the cell wall: There are a large number of plasmodesma channels or vulnerable regions and holes different in growth and th     

吖啶红荧光猝灭法测定痕量亚硝酸根

研究了在稀硫酸介质中亚硝酸根与吖啶红发生的亚硝化反应,建立了测定痕量亚硝酸根的荧光猝灭法。方法的测定范围为0.01～0.70μg·ml-1。方法用于环境水样中痕量亚硝酸根的测定,结果满意。     

阴离子交换树脂分离富集水中痕量镉

先用草酸处理水样中的镉离子,生成的[Cd(C2O4)2]2-络阴离子通过强碱性阴离子交换树脂分离富集,最后用火焰原子吸收分光光度法测定了水样中的痕量镉。该法简便,选择性好,富集倍数高,应用于实际水样的检测,回收率为98%~102%,结果令人满意。     

叶绿素、染料体系光电效应的研究

叶绿素光电性质的研究有特殊意义.70年代开始国内外已有很多报道, 它们有整流、光导、光伏和光解水制取氢和氧等性质^[1-5].我们也报道过叶绿素a/聚乙烯醇夹层电池的研究^[6-8]。     

THE EFFECT OF SENSITIZERS ON PARTIAL OXIDATION OF METHANE TO FORMALDEHYDE

Ketone was the optimum sensitizer selected from many additives. With ketonc as the additive, the yield of formaldehyde was more than 2.40% and the highest yield Was 3.58% over the silica gel-1 catalyst, and remained almost unchanged during the catalyst life test of 500 h. Ketone can compensate the catalyst for the -OH loss shown by 1R, TGA and XPS of the catalysts before and after the reaction.     

核壳乳剂的潜影分布和Sabatier效应的研究

本文制备了两种单分散八面体模型孔剂,一种是含碘10mol%的碘均匀分布碘溴化银乳剂,另一种是内核含碘20mol%的碘溴化银,外壳为溴化银的核壳乳剂。并对它们分别进行表面硫加金和硫加金加铱敏化。用简单腐蚀技术研究上述乳剂的内部影像空间分布的结果表明:随着表面敏化程度的增加,表面敏度逐渐增大;随着腐蚀的深入,内部敏度逐渐减少。核壳乳剂的表面和内部敏度均大于碘均匀分布颗粒乳剂。核壳乳剂的内部影像在颗粒內部先逐渐减少,在一定深度以后又逐渐上升,内部影像分布出现“低谷”,且“低谷”程度与表面敏化程度有关。Sabatier效应研究的结果表明:产生较明显的Sabatier效应的乳剂颗粒既要有足够的表面敏度,也要有足够的内部敏度,且两者要匹配。同时提出了产生Sabatier效应的机理。     

TiO2超微粒子的量子尺寸效应与光吸收特性

利用Ｒａｍａｎ激光光谱,ＸＲＤ,ＴＥＭ,ＳＥＭ和ＵＶ－Ｖｉｓ等手段研究了ＴｉＯ２超微粒子的量子尺寸效应与光吸收特性。结果发现：Ｔｉ（ＯＢｕ）４在较低ｐＨ值的水解条件下制得的ＴｉＯ２溶胶粒径为５～１０ｎｍ;随着热处理温度的升高,ＴｉＯ２微粒的粒径增大,经４７３～６７３Ｋ热处理得到的ＴｉＯ２超微粒子粒径为１０～２０ｎｍ,呈不规整的锐钛矿型结构。ＴｉＯ２的拉曼峰随热处理温度升高而发生红移,表现出量子尺寸     

TiO2薄膜的制备方法及其对染料敏化太阳电池性能的影响

采用溶胶 凝胶、浆体涂敷、磁控溅射等方法制备了二氧化钛单层以及多层膜.通过透射电镜、扫描电镜以及X射线衍射实验分析了不同薄膜的结构.通过比较不同薄膜制作的染料敏化太阳电池性能探讨了薄膜结构的影响.实验所获得的电池开路电压可达708mV,短路电流可达13.26mA(电池面积为1.8cm²).     

氧化锌脱硫中氢和氧的双气氛效应及动力学研究

用热重法研究了氧化锌脱硫中氢氧的气氛效应以及氢氧共同存在下氧化锌脱硫的微观动力学行为。实验温区为200 ℃～320 ℃，氧化锌粒度为100目～120目。研究结果表明，在0%～40%的体积浓度范围内，氢可促进脱硫反应进行；氧则由于会引起氧化锌表面析硫使得脱硫过程随其浓度的变化复杂化。氢氧双气氛下，氧化锌脱硫动力学行为可用改良收缩核模型进行描述，表面反应活化能和固体扩散活化能分别为14.96 kJ/mol和46.77 kJ/mol。     

烷基十八胺在离子交换树脂上的吸附及影响研究

研究发现，各种离子交换树脂对烷基十八胺均有较强的吸附作用，阳树脂吸附作用最强，可以近似100％吸附，吸附烷基十八胺后的树脂强度降低，沉降速度改变。常用的无机复苏液无法将吸附的十八胺洗脱出来。     

微载体糖基化修饰及培养基中添加果糖对大鼠原代肝细胞体外培养的影响

采用对大孔壳聚糖微载体进行糖基化修饰和培养基中添加果糖两种方式考察了果糖对原代大鼠肝细胞体外培养的影响。结果显示,肝细胞在果糖修饰大孔微载体上聚集生长,形态良好,保持了较高的白蛋白分泌和尿素合成活性,表明果糖修饰大孔壳聚糖微载体是较理想的细胞培养支架材料。培养基中加入果糖,肝细胞乳酸脱氢酶泄漏明显降低,白蛋白分泌与尿素合成活性进一步提高,显示有利于受损细胞功能的恢复。     

在DBU存在下酞菁锰配合物的合成及溶剂影响

在强有机碱１，８－二氮杂双环［５，４，０］十一－７烯（简称ＤＢＵ）存在下，ＭｎＣｌ２与邻二氰基苯在某些二元醇溶剂中可高效合成Ｍｎ（Ⅱ）Ｐｃ（Ｐｃ表示酞菁），同时研究了不同溶剂对合成产物的物种及产率的影响和不同氧化态锰的酞菁配合物在一些醇溶剂中的互变现象     

由特殊相互作用导致的高分子间的络合

采用结合物理老化技术的示差扫描量热法（ＤＳＣ）以及非辐射能量转移荧光光谱法（ＮＲＥＴ）研究了聚（聚乙烯－ｃｏ－４－乙烯基苯酚与聚甲基丙烯酸乙酯（ＰＥＭＡ）共混体系的相容与络合行为。对ＳＴＶＰｈ／ＰＥＭＡ共混体系,当ＳＴＶＰｈ中的ＯＨ基团含量仅为１ｍｏｌ％时,即可实现相容。随ＯＨ基含量继续增加,共混体系的Ｔｇ值上升并逐渐接近和高于Ｆｏｘ方程计算值,玻璃化转变区域逐渐变窄,ＮＲＥＴ能量转移效率远高于普     

反应原料组成对单分散苯乙烯微球粒径及其分布的影响

采用分散聚合工艺制备微米级单分散聚苯乙烯微球，并对分散聚合反应的内部影响因素(分散稳定剂、助稳定剂、单体、引发剂)进行了研究．结果表明，随着分散稳定剂和助稳定剂用量的增加，聚苯乙烯微球的粒径减小；随着单体和引发剂用量的增加，聚苯乙烯微球的粒径增大．分散稳定剂和单体用量是影响聚苯乙烯微球粒径分布的两个主要内部因素．     

五氧化二铌在沸石表面的分散和助剂效应

采用固-固研磨焙烧方法制备了分散型的Nb_2O_5/ZSM-48催化剂母体,XRD和SEM鉴定结果表明,在一定负载量内,Nb_2O_5可均匀地分散于ZSM-48沸石载体表面。由于Nb_2O_5的引入,改变了载体表面性质,同时也改善了Fe-K-Nb_2O_5/ZSM-48催化剂的还原及对CO和H_2的吸附性能,其结果促进了一氧化碳加氢反应的进行和低碳烯烃反应产物的生成,同时提高了催化剂的稳定性。     

APPLICATION OF CLUSTER ANALYSIS TO THE TAXONOMY OF ORDER AND SUBORDER OF THE TRILOBITA

In the present paper, in accordance with the exoskeleton structure, the method of Q-mode cluster analysis is used for a taxonomic study of 17 orders (suborders) of the Tritobita that was established or adopted by H. J. Harrington (1959), J. Bergstrm (1973), and R. A. Fortey and R. M. Owens (1975). The author suggests that the Trilobita be subdivided into 9 orders and 14 suborders, i. e. order Agnostida Kobayashi, 1935 (suborder Agnostina Salter, 1864 and suborder Eodiscina Kobayashi, 1939), order Redlichiida Richter, 1933 (suborder Redlichiina Richter, 1933, suborder Bathynotina Lochman-Balk, 1959 and suborder Olenellina Resser, 1938), order Corynexochida Kobayashi, 1935, order Ptychopariida Swinnerton, 1915 (suborder Ptychopariina Richter, 1933, suborder Proetina Fortey & Owens, 1975, nom. transl, ex Proetida Fortey & Owens, 1975 and suborder Calymenina Swinnerton, 1915, emended herein), order Illaenida Jaanusson, 1959 (suborder Illaenina Jaanuson, 1959 and suborder Asaphina Salter, 1864, emended herei