昆明产紫卷心菜紫红色素的提取与性质研究

从天然食用紫卷心菜中提取紫红色素,并对提取溶剂、温度、时间及次数等工艺条件进了研究,研究结果表明该色素的溶解性、热稳定性、光稳定性在酸中的性质及在5×10-5mo1·L-1金属离子溶液中的稳定性是好的,氧化剂或还原剂对其有一定影响,产率0.5%,是值得开发的天然食用色素.     

C5H11O5CHO母液制取焦糖色素的研究

以葡萄糖母液为原料，分别对采用氨水，碱和铵盐为催化剂生产食用焦糖色素进行了研究，研究结果表明，以氨水为催化剂，产率高达75%，反应速度快，以碱作为催化剂，产率为70%，产品质量好。     

大孔吸附树脂浓缩火龙果色素的研究

探讨了吸附和洗脱火龙果色素的方法和条件.该色素在535nm处有最大吸收峰.S 8型大孔吸附树脂对火龙果色素具有较好的吸附能力.乙醇浓度对树脂上色素的解吸有影响,当浓度为40%时解吸效果最好.考察了不同进样速度下树脂柱的泄漏和不同的酸浓度对洗脱峰的影响,结果选择1.5mL/min的进样速度及0.2%HCl 40%乙醇溶液为洗脱剂.经吸附-洗脱循环,色素液浓缩17倍以上,回收率达93.4%,且色素浓缩液具有较好的稳定性.     

C5H11O5CHO母液制取焦糖色素的研究

以葡萄糖母液为原料,分别对采用氨水、碱和铵盐为催化剂生产食用焦糖色素进行了研究.研究结果表明,以氨水为催化剂,产率高达75%,反应速度快,以碱作为催化剂,产率为70%,产品质量好.     

伊犁红星苹果色素的提取及稳定性研究

采用正交试验对伊犁红星苹果色素的最佳提取条件进行了研究,并探讨该色素的稳定性.结果表明:伊犁红苹果色素的最佳提取工艺为:料液比为1:30,乙醇浓度为90％,浸提时间3h,提取温40℃条件下色素产率最高;该色素耐高温性、耐光性好,在常用食品添加剂等条件下有较好的稳定性,可作为天然植物色素在食品、饮料等行业中使用.     

从黑枣果实中提取黄色素的研究

以黑枣果实为原料，用８０％乙醇—Ｈ２Ｏ常温下浸泡２４ｈ，重复１次。浸泡液经浓缩、蒸干得色素胶质，再用丙酮溶解、浓缩、干燥、得黄色素粉末。该色素属水溶性色素，对光、热均稳定，氧化剂和还原剂可使吸光度减小，对Ｆｅ３＋，Ａｌ３＋，Ｚｎ２＋等无作用。蔗糖可使色素吸光度数值有所下降，苯甲酸钠对色素的吸光度基本无影响，ＮａＣｌ则具有增色作用。黑枣黄色素在４６０ｎｍ处有一吸收峰，在ｐＨ＞７和ｐＨ＜７条件下吸收光谱有较大差异     

色素吸附法选定微孔淀粉制备条件

以微孔淀粉对胭脂红色素的吸附量的大小为依据,选定制备微孔淀粉的工艺条件.实验结果表明,用酶法制备微孔淀粉的优化工艺条件是反应温度为45℃,pH值为4.0,反应时间为16h,酶用量为0.6%.在此条件下所制得的微孔淀粉对胭脂红色素的吸附量为5mg/g.     

蓝莓色素提取条件的研究

运用RAPIDASE(R) INTENSE果胶酶以提高蓝莓果的出汁率,提高蓝莓色素的得率.通过正交试验确定了乙醇浸提法提取蓝莓色素的最佳提取条件:70%的乙醇溶液为提取剂,提取温度为30 ℃,提取时间为2 h,料液比为1:10.在此条件下,色素得率为4.8%.     

野油菜黄单胞菌色素的分离与稳定性研究

液体发酵野油菜黄单胞菌,生产大量菌液,通过离心、浓缩获得野油菜黄单胞菌色素干品,进行热、光照、酸碱度对色素稳定性的影响试验。结果表明,野油菜黄单胞菌黄色素在高温、长时间光照、强酸碱度条件下,性状稳定,吸收波长稳定在330 nm。     

甘谷辣椒红色素稳定性研究

通过对甘谷辣椒红色素进行提取,确定了其中的4种成分,研究了色素提取的最佳条件及色素的稳定性.结果表明:该色素含有辣椒红色素、辣椒玉红素、β-胡萝卜素、辣椒碱、二氢辣椒碱5种主要成分.色素在480 nm有最大吸收峰,该色素水溶性较差,油溶性较好,在pH值4~10时色调不变,具有良好的热稳定性.温度为90℃时,色素稳定.良好的耐酸碱性,耐光性较差,连续光照48 h,色素残存率为45%,1 mg/L Na+,Ca2+、Al3+溶液对色素最大吸收峰无明显影响,1 mg/L Cu2+,Fe2+溶液使色素最大吸收峰偏移.     

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.     

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.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.