火焰原子吸收光谱法测定桑叶中Cu,Pb,Cd的含量

本文用火焰原子吸收光谱法测定了桑叶中Ｃｕ、Ｐｂ、ｃｄ的含量，并研究了样品的不同消化方法对其测定的影响，选择了ＨＮＯ＿３＋ＨＣｌＯ＿４＋ＨＦ消化苯系用于实际测定。方法的灵敏度依次为０．３１４μｇ／ｍｌ／１％，０．０３２μｇ／ｍｌ／１％，０．０５４μｇ／ｍｌ／１％。相对标准偏差依次为４．９％，３．４％，２．１％。加标回收率依次为９７－１０２％，９８－１０２％，９７－１０１％。     

单柱离子色谱法测定饮用水,井水和矿泉水中微量硫酸根

本文研究了单柱离子色谱法测定饮用水、井水和矿泉水中微量硫酸根的方法。样品经适当稀释,微孔滤膜过滤即可直接进样分析。淋洗液最佳浓度为２．６ｍｍｏｌ·Ｌ＾－１Ｈ２Ｃ８Ｈ４Ｏ４／２．５ｍｍｌ·Ｌ＾－１Ｈ２ＮＣ（ＣＨ２ＯＨ）３。电导检测器检测、检测灵敏度为１．６μｓ／ｃｍ。最低检出限为０．１５μｇ／ｍｌ,线性范围１．０￣２．５×１０＾３μｇ／ｍｌ,相对标准偏差１．５％,平均回收率９７．６６￣９８．７７％。     

单柱离子色谱法同时测定土壤中溴和碘的研究

本文研究了以邻苯二甲酸／三羟甲基氨基甲烷为淋洗液的单柱离子色谱法同时测定土壤中微量溴和碘离子的方法。样品采用碳酸钠－氧化镁混合熔剂半熔,热水浸提,无基体干扰。淋洗液最佳浓度为２．２ｍｍｏｌ．Ｌ＾－１,Ｈ２Ｃ８Ｈ４Ｏ４／２．０ｍｍｏｌ．Ｌ＾－１Ｈ２ＮＣ（ＣＨ２ＯＨ）３。最低检测限Ｂｒ＾－０．０６５μｇ／ｍｌ．Ｉ＾－０．０２７μｇ／ｍｌ。相对标准偏差Ｂｒ＾－,１．９６％,Ｉ＾－３．１７％,回收率Ｂｒ＾     

恩诺沙星药物对几株禽源致病性大肠杆菌的药？…

利用畜禽专用氟喹酮类抗菌药－恩诺沙星对禽源致病性大肠杆菌采用试管法和纸片法进行了体外药敏试验。结果表明,不同厂家生产的恩诺沙星药物：百病消,普杀平,恩诺沙星对大肠杆菌Ｏ２的ＭＩＣ分别为０．１μｇ／ｍｌ、０．２μｇ／ｍｌ、０．２μｇ／ｍｌ;ＭＢＣ分别为０．２μｇ／ｍｌ、０．４μｇ／ｍｌ、０．４μｇ／ｍｌ。对大肠杆菌Ｏ７８的ＭＢＣ均为０。恩诺沙星新配溶液和放置一月后的药液对大肠杆菌Ｏ２的ＭＩＣ为０．２     

棒曲霉UA—2木聚糖酶的蔗渣固态发酵

棒曲霉（Ａｓｐｅｒｇｉｌｕｓｃｌａｖａｔｕｓ）ＵＡ－２固态发酵蔗渣产木聚酶的培养基为每克蔗渣加营养液５ｍｌ，初始ｐＨ８．５．营养液的适宜组成为每升含：ＮＨ４ＮＯ３１０ｇ、Ｋ２ＨＰＯ４６ｇ、ＭｇＳＯ４·７Ｈ２Ｏ０．７５ｇ、ＣａＣｌ２０．７５ｇ、ＦｅＳＯ４·７Ｈ２Ｏ１１．２５ｍｇ、ＭｎＳＯ４·Ｈ２Ｏ３．７５ｍｇ、ＺｎＳＯ４３．０ｍｇ、ＣｏＣｌ２４．５ｍｇ．在上述培养基中接入其湿重１０％（Ｗ／Ｗ）的新鲜的ＵＡ－２种子曲，２８℃培养１０８ｈ，其木聚糖酶，滤纸降解酶和羧甲基纤维素酶的活力分别为２６９５．６、２８．５和４２．７ｕ／ｇ蔗渣．酶反应的最适ｐＨ５．０，最适温度５０℃；在ｐＨ４．０～１１．０内酶活性十分稳定．５０℃保温１ｈ，酶活剩余５５％，８℃下放置２３ｄ，活力几乎不变．磷酸盐，半胱氨酸对酶有激活作用，ＥＤＴＡ和对氯汞本甲酸对酶有抑制作用     

石墨炉原子吸收光谱法测京万红中的镉

本文研究了利用石墨炉原子吸收光谱法测定京万红中镉，以ＨＮＯ３－ＨＣｌＯ４－Ｈ２Ｏ２处理样品，转化为测定溶液，残留的ＨＮＯ３、ＨＣｌＯ４对测定无影响，可检测０．００２４μｇ／ｇ的镉；精密度２．４％；回收率在９５－１１０％。     

石墨炉原子吸收光谱法测京万红中的镉

本文研究了利用石墨炉原子吸收光谱法测定京万红中镉．以ＨＮＯ３－ＨＣｌＯ４－Ｈ２Ｏ２处理样品，转化为测定溶液。残留的ＨＮＯ３、ＨＣｌＯ４对测定无影响。可检测０．００２４μｇ／ｇ的镉；精密度达２．４％；回收率在９５－１１０％．     

活性艳红X—3B氧化脱色的研究

采用Ｆｅｎｔｏｎ试剂对高浓度活性艳红Ｘ－３Ｂ废水进行氧化脱色。研究表明,ＦｅＳＯ４．７Ｈ２Ｏ＝０．４ｇ／ｌ,Ｈ２Ｏ２＝３．０ｍｌ,ｐＨ＝３－５时,３０ｍｉｎ内的脱色率达９５％以上,１２０ｍｉｎ时残留ＣＯＤｃｒ为８７．６ｍｇ／ｌ．Ｆｅｎｔｏｎ试剂的脱色作用。     

催化动力学光度法测定铜离子

在Ｈ２ＳＯ４ 介质中, 氯酸钾可以氧化曙红而使其褪色, Ｃｕ２ ＋ 对此反应具有催化作用, 从而建立了测定Ｃｕ２ ＋ 的新方法． 测定的线性范围为０－５ ～２０μｇ／Ｌ, 检出限为０－２２μｇ／Ｌ．     

几种芳烃衍生物型捕收剂的液相色谱分离和测定

报道了一种反相ＨＰＬＣ方法对几种芳烃衍生物型捕收剂的分离和测定．该法借助色谱柱ＬｉＣｈｒｏＣＡＲＴ１００ＲＰ１８（５μｍ）,流动相：甲醇－水－５％Ｈ３ＰＯ４－５％Ｈ２ＳＯ４（４５∶５５∶４∶０．５,体积分数）和紫外检测器在２８５ｎｍ波长下进行．在０．０００５～０．０１ｇ／Ｌ浓度范围内,方法的相对标准偏差为１．１％～２．４％．水杨羟肟,苯并三唑,水杨醛肟,水杨酸,铜铁灵等的检出限分别为１．０×１０－６,０．２×１０－６,１．０×１０－６,５．０×１０－６和６．０×１０－６ｇ／Ｌ,所研制的方法已应用于矿物浮选过程实际样品的分析．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with