D101型吸附树脂纯化银杏叶中黄酮类化合物的研究

系统地研究了采用Ｄ１０１吸附树脂自根杏叶中提取纯化黄酮类化合物的工艺通过对Ｄ１０１吸附树脂使用效率影响因素的研究，确定出最优的吸附－解吸工艺条件；吸附流速为３ｍＬ／ｍｉｎ，吸附原液ｐＨ值为８．３采用２倍树脂床体积的７０％乙醇解吸，解吸流速为１．５ｍＬ／ｍｉｎ，操作温度为室温。     

用强碱性阴离子交换树脂从碳酸盐溶液中回收铀的研究 2.U(Ⅵ)在溶液相与树脂相的化学状态

在过量碳酸盐存在的Ｕ（Ⅵ）溶液中,Ｕ（Ⅵ）的化学状态与溶液的ｐＨ值有关,当ｐＨ＞８时,Ｕ（Ⅵ）以［ＵＯ２（ＣＯ３）３］４－离子存在．吸附于树脂相的Ｕ（Ⅵ）的化学状态也与供吸附的料液的ｐＨ值有关,当ｐＨ＞９时,Ｕ（Ⅵ）才完全以［ＵＯ２（ＣＯ３）３］４－吸附于树脂相．当ｐＨ在６．５～８．０范围时,Ｕ（Ⅵ）在溶液中还可能以［ＵＯ２（ＣＯ３）２］２－或Ｈｎ［ＵＯ２（ＣＯ３）３］ｎ－４形式存在,而Ｕ（Ⅵ）以［ＵＯ２（ＣＯ３）２］２－形式吸附于树脂相的可能性很小,它主要以Ｕ２Ｏ２－７的形式吸附于树脂相．     

pH和温度对亚微米强酸树脂吸附L—赖氨酸的影响

研究了溶液ｐＨ和温度对亚微米强酸树脂离子交换赖氨酸（〉３０ｇ／Ｌ）的影响，与７３２强酸树脂进行了对比，并对所得吸附等温线进行了关联，研讨其吸附模型。结果表明：ｐＨ对亚微米强酸树脂交换有明显影响，其吸附量远大于７３２树脂；温度对其影响不大，但引起了交换量极值点向ｐＨ值小的方向移动。氢型亚微米强酸树脂的吸附等温线呈现出超当量吸附和多分子层吸附两个特征，并符合ｄｅ Ｂｏｅｒ－Ｚｗｉｋｋｅｒ公式，属极性吸     

用强碱性阴离子交换树脂从碳酸盐溶液中回收铀的研究：2.U（ …

在过量羰酸盐存在的Ｕ（Ⅵ）溶液中,Ｕ（Ⅵ）的化学状态与溶液的ｐＨ值有关,当ｐＨ〉８时,Ｕ（Ⅵ）以［ＵＯ２（ＣＯ３）３］＾４－离子存在。吸附于树脂相的Ｕ（Ⅵ）的化学状态与与供吸附的料液的ｐＨ值有关,当ｐＨ〉９时,Ｕ（Ⅵ）才完全以［ＵＯ２（ＣＯ３）３］＾４－吸附于树脂相。当ｐＨ在６．５￣８．０范围时,Ｕ（Ⅵ）在溶液中还可能以［ＵＯ２（ＣＯ３）２］＾２－或Ｈｎ［ＵＯ２（ＣＯ３）３］＾ｎ－４形式存在,而Ｕ     

从香菇发酵醪液中分离鸟苷酸技术的研究

香菇发酵醪处理液经７３２阳树脂在ｐＨ２．５￣３．０时得５＇－ＧＭＰ和５＇－ＣＭＰ混合液，再调至ｐＨ４．０￣４．５上７１７阴离子树脂柱，５＇－ＧＭＰ被吸附，用ψ＝３％ＮａＣｌ溶液解吸，即分离得５＇－ＧＭＰ。醪液经０．２μｍ胶体磨破壁后分别作了自溶，酶解（５＇－磷酸二脂酶）和自溶加酶解三种处理，结果５＇－ＧＭＰ得率分别为９４．０％，９５．１％和９５．０％，未见显著差异。     

离子交换树脂光度法测定铁的研究

Ｆｅ２＋与邻二氮菲在ｐＨ４．０～９．０形成配阳离子，能为强酸性阳离子交换树脂吸附，吸附有配阳离了的树脂相可直接用于铁的光度测定。λｍａｘ＝５２０ｎｍ，ｐＨ＝６．５，ε＝４．６２×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，变异系数为２．１９％     

酒石酸溶液动态交换吸附性能的研究

在静态学研究的基础上，考察了Ｄ３１５，Ｄ３０１，３３５，Ｄ３４５ ４种树脂对酒石酸，氯离子的动态交换吸附性能及其选择性能；选择Ｄ３１５树脂作为分离介质，探讨了ｐＨ值，初始Ｃｌ＾－和ＳＯ４＾２－浓度，流速等因素对交换吸附容量的影响，确定了离子交换法分离酒石酸的工艺路线及条件。     

蜜胺树脂在硝酸介质中对钯的吸附行为

研究了在硝酸介质中密胺树脂对钯的吸附行为和吸附的影响因素。结果表明，在１ｍｏｌ．ｄｍ＾－＾３硝酸溶液中，存在一定量的氯离子（Ｃｌ＾－）的情况下，密胺树脂对钯Ｐａ（ＩＩ）的吸附率可达８０％以上，同时对密胺树脂和载有Ｐｄ（ＩＩ）的树脂作了红外光谱测定。     

河口水中Cd（Ⅱ）在Fe2O3.nH2O（am.）上的特性吸附及界面…

本文叙述了盐度为５‰的河口水中Ｃｄ（Ⅱ）在Ｆｅ２Ｏ３．ｎＨ２Ｏ（ａｍ２）上的吸附等温线以及ｐＨ盐度对吸附百分率的影响，着重讨论了吸附对固－液界面电性的影响和不同盐度（ｓ＝２．５‰，５．０‰，７．５‰）时吸附Ｃｄ（Ⅱ）后变化的等电点，结果表明：Ｃｄ（Ⅱ）在Ｆｅ２Ｏ３．ｎＨ２Ｏ（ａｍ）上的吸附为特性吸附，固液界面的电性变化及等电点移动与体系的ｐＨ和Ｃｄ（Ⅱ）的吸附量有关，盐度上升，吸附量降低，由吸附～     

DA-201树脂回收、净化废水中苯酚的研究

作者研究了ＤＡ－２０１吸附树脂回收，净化废水中的苯酚的工艺条件。实验表明：当废水的ｐＨ〈７时，吸附树脂不仅能回收苯酚，而且不产生二次污染，失效树脂使用５％的ＮａＯＨ溶液或甲醇脱酚，其效率接近１００％。     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.