化学抗旱剂在烤烟生产上的应用试验

1994～1995年,靖西县新圩乡引进化学抗旱剂——高吸水树脂、农一清应用于烤烟栽培,并进行田间对比试验示范。结果表明：高吸水树脂、农一清具有提高烤烟根系土壤的保水、保肥能力,促进烤烟正常生长的特性。试验期间虽受干旱天气影响,但均普遍表现增产增质     

Cyclic terpenoids of contemporary resinous plant detritus and of fossil woods, ambers and coals

Cyclic terpenoids present in the solvent extractable material of fossil woods, ambers and brown coals have been analyzed. The sample series chosen consisted of wood remains preserved in Holocene to Jurassic sediments and a set of of ambers from the Philippines (copalite), Israel, Canada and Dominican Republic. The brown coals selected were from the Fortuna Garsdorf Mine and Miocene formations on Fiji.The fossil wood extracts contained dominant diterpenoid or sesquiterpenoid skeletons, and aromatized species were present at high concentrations, with a major amount of two-ring aromatic compounds. Tricyclic diterpenoids were the predominant compounds in the ambers. Aromatized derivatives were the major components, consisting of one or two aromatic ring species with the abietane and occasionally pimarane skeletons. The saturated structures were comprised primarily of the abietane and pimarane skeletons having from three to five carbon (C₁, C₂, etc.) substituents. Kaurane and phyllocladane isomers were present in only minor amounts. Bicyclic sesquiterpenoids as saturated and partial or fully aromatized forms were also common in these samples, but only traces of sesterterpenoids and triterpenoid derivatives were found.The brown coal extracts were composed of major amounts of one- and two-ring aromatized terpenoids, with a greater proportion of triterpenoid derivatives than in the case of the woods and ambers. This was especially noticeable for the German coal, where the triterpenoids were predominant. Open C-ring aromatized structures were also present in this coal. Steroid compounds were not detectable, but some hopanes were found as minor components in the German brown coal.An overview of the skeletal structure classes identified in each sample, as well as the general mass spectrometric characteristics of the unknown compounds are included in the present paper. It can be concluded from these structural distributions that aromatization is the main process for the transformation of terrestrial cyclic terpenoids during diagenesis, constituting a general pathway for all terpenoids.     

预应力锚索防腐蚀技术的现状及发展方向

从腐蚀机理出发，阐述了预应力锚索防腐蚀方法的现状，并提出了有关发展方向的建议。     

硼特效树脂离子交换法分离硼的研究

本文对AmberliteIRA743硼特效树脂交换分离础的特性及其影响因素进行了研究.它适用于各种地质作品中硼的分离提取，特别是在硼同位素地球化学研究时。必须进行础纯化的场合。     

阳离子交换树脂吸附石墨炉原子吸收法测定海水中痕量铜、铅、镉

用阳离子交换树脂吸附石墨炉原子吸收法测定海水中痕量Cu,Pb,Cd。实验选定了最佳的测定条件。结果表明,在弱碱性条件下,Cu,Pb,Cd能同时被阳离子交换树脂定量吸附。方法的相对标准偏差<3﹪,样品加标回收率93﹪～102﹪,检出限分别为Cu 0.06μg/L,Pb 0.06μg/L,Cd 0.005μg/L。本法操作简便、快速、无干扰、无污染,已用于海水中铜、铅、镉的分析,取得了令人满意的结果。     

聚凝体深部液流转向技术研究与实践

阐述了聚凝体深部液流转向技术的作用机理，及将其应用于长期注水开发的羊三木油田，阻止注入水沿注采井窜流的应用成果．聚凝体是一种聚合物的凝胶体．该技术利用了聚凝体的弹性变形特性，研究其在油层多孔介质中可流动特征及其封堵大孔道产生的液流转向能力．在此基础上，完成了羊三木油田一断块丛14、丛19井深部液流转向现场试验，取得了增油降水的效果，在技术和经济上都取得了成功。     

P350萃淋树脂吸附铼的性能研究及应用

研究了P350在硫酸介质中吸附铼的性能和微色谱柱分离微量铼的条件和选择性，确定了以P350萃淋树脂为固定相，硫酸溶液为流动相萃取色谱分离微量铼的最佳条件，以2mol／L硫酸为上拄液，4mol／L硫酸为淋洗液，水为解析液，使铼与铀(Ⅵ)、钼(Ⅵ)、铁(Ⅲ)、锰(Ⅱ)、铬(Ⅵ)、钛(Ⅳ)等金属离子分离。采用丁基罗丹明B光度法测定铀矿石中微量铼，分析结果符合要求。     

塔里木盆地北部油气层保护工艺技术研究与应用

用一种具有油溶性质的可变形粒子做桥塞物 ,在油气储层通道中建立桥堵屏蔽层 ,防止由于压差造成钻井泥浆进入储层而形成污染 ,从而起到保护油气储层的作用     

P507色谱分离ICP-AES法测定高纯氧化镥中14种稀土杂质

用P507萃淋树脂一盐酸体系色谱分离、ICP－AES法测定高纯氧化镥中14种痕量稀土杂质。检测限低,抗干扰能力强,稳定性好,分离周期短,多次取样加入标准分离试验,杂质回收率在81．4％-116％,相对标准偏差为1．68％-6．01％。     

Use of rhodamine WT with XAD-7 resin for determining groundwater flow paths

A passive sampling system for use with rhodamine WT (RWT) in groundwater tracing experiments was developed to assist in the characterisation of groundwater flow paths. Amberlite XAD-7 resin was found to be suitable for adsorption of RWT, which can then be extracted using an ethanol/water mix and analysed fluorometrically. Batch and column experiments showed that XAD-7 resin has a high RWT capacity. The adsorption was slightly dependent on pH, but was always above 75% under batch conditions. The resin had a high percentage mass recovery at flow velocities around 1.5 m/day, but this decreased with increasing flow velocities. Desorption of RWT off the resin in water is dependent on the flow velocity of water and the time after the peak RWT has passed. The mass of RWT extracted from the resin bags correlated very well with both the RWT mass flux in the water and the peak concentrations observed in the monitoring wells in a field experiment. The results of resin bags were reproducible in the field with a mean coefficient of variation equal to 16%. This method has been successfully applied to two field situations with different flow velocities to indicate groundwater flow paths. Electronic Publication