Ni-P-纳米TiO2化学复合镀镀液稳定性研究

在确定纳米TiO2超声分散工艺的基础上，采用正交试验和单因素比较法，系统研究了镀液配比、pH值、温度、PbCl2和纳米TiO2加入量对Ni-P-纳米TiO2化学复合镀镀液稳定性的影响。研究结果表明：镀液的配比、pH值、温度对镀液稳定性均有影响，其影响的显著性顺序是：pH值小于乳酸浓度小于温度小于镍磷比小于乙酸钠浓度的影响；PbCl2的加入可使镀液的稳定性明显提高，而纳米TiO2的加入对镀液的稳定性几乎没有影响；推荐Ni-P-纳米TiO2化学复合镀采用的镀液为：x(Ni^2 ／H2PPO2^-)=0．4，ρ(乳酸)=34g／L、ρ(乙酸钠)=4g／L、ρ(PbCl2)=0．0010g／L、ρ(TiO2)=4g／L。     

甘蔗渣处理中成药制药废水的研究

采用铁活化甘蔗渣对中成药制药废水进行吸附研究,以脱色率和CODcr去除率为评价指标,考察了pH值、投加量、温度、H2O2加入量和反应时间等因素对废水吸附效果的影响.结果表明,随着pH值的升高,脱色率和CODcr去除率均先增高后降低;增加甘蔗渣投入量,CODcr去除率上升,而脱色率下降;高温不利于废水的处理;H2O2加入量对脱色率有显著的影响;反应时间对脱色率和CODcr去除率也有一定的影响.实验最佳处理条件为:处理液pH值为初始液pH值,在50mL废水中投加量为3.0g,温度为35℃,H2O2加入量为4.0mL,反应时间为2h.在最佳条件下,制药废水的脱色率和CODcr去除率分别为87.59%和51.88%.同时用红外吸收光谱对甘蔗渣结构进行了表征.     

碳铵添加剂的生产和使用管理

简要介绍了碳铵添加刑的生产工艺、生产成本与价格、质量与消泡剂的关系以及使用问题，阐述了在碳铵添加刑的使用过程中出现的起泡带液问题、分层问题以及添加剂加入的工艺流程和操作管理等，提出了相应的解决措施。     

碱析分离法处理造纸红液

采用碱析分离法处理浓缩造纸红液,研究了体系pH值、碱析剂加入量、反应温度和时间等因素对碱析反应的影响,确定了碱析反应的优化工艺条件,并对碱析反应机理进行了讨论。实验结果表明,pH值对木质素磺酸盐与钙离子间络合作用影响显著,氢离子可与木质素磺酸盐螯合,从而导致Ca²⁺与木质素磺酸盐的螯合作用降低,由此碱析分离法需在较高pH值下进行反应。以10mL造纸浓缩红液为处理对象,碱析反应的优化条件为：pH值为13,碱板剂Ca²⁺加入量为8g/L,反应温度为40℃,反应时间为30min时,木质素沉淀量最大为4.5g/10mL。     

工艺参数对Ni-SiC纳米复合镀层沉积速率的影响

用电沉积的方法在铜表面制备了Ni-SiC纳米复合镀层,研究了不同的工艺参数,包括阴极电流密度、镀液中纳米SiC悬浮量、镀液pH值、镀液温度和搅拌速度对复合镀层的沉积速率的影响。结果表明:在实验电流范围内,镀层的沉积速率随着阴极电流密度的增大呈线性上升的趋势;随着镀液中纳米颗粒悬浮量、镀液pH值及搅拌速度的增大而增大,当达到一定值时,又开始下降;随着镀液温度升高,逐步降低。最佳参数为:不烧焦镀层前提下的最大电流,纳米颗粒体积质量为5 g/L,pH值3.5～4.0,温度30℃,搅拌速度为中高速。     

化学合成切削液消泡剂实验研究

分析了化学合成切削液形成泡沫与消除泡沫的原理，在实验研究各种消泡剂的基础上，复配出了性能优良的适用于化学合成切削液的复合型消泡剂。用正交实验优化出了最佳配比，同时对复合消泡剂的加入量及加入工艺做了实验研究。     

林可霉素发酵液絮凝过滤研究

考察絮凝剂阳离子型聚丙烯酰胺的用量，絮凝温度和pH值对发酵液絮凝除杂质及过滤的影响。获得较好的实验条件为：在适度的搅拌下絮凝剂的加入量为0．008％质量浓度，絮凝温度为35℃，pH值为3，该研究为发酵工业采用阳离子型聚丙烯酰胺絮凝分离林可霉素发酵液中的杂质提供参考依据。     

胡萝卜籽蛋白的提取工艺优化及性质研究

以胡萝卜籽为原料,采用碱提酸沉法对其中的蛋白质进行提取.通过单因素实验考察料液比、温度、pH值和时间对蛋白质提取率的影响,在此基础上通过正交实验优化出胡萝卜籽蛋白提取的最佳工艺条件,确定了胡萝卜籽蛋白最佳酸沉pH值,并对所提取的蛋白质功能性质进行了研究.结果表明:在料液比为1∶20、温度55℃、pH值为12.0、时间4 h的条件下,胡萝卜籽蛋白的提取率为42.23%,最佳酸沉pH值为4.5,吸水性为3.28 g·g~(-1),吸油性为3.09 m L·g~(-1),乳化性和起泡性相对较差.     

Fenton试剂处理拉开粉废水的影响因素

采用Fenton试剂对橡胶装置所排拉开粉废水进行了处理,探讨了pH值、H2O2加入量、反应时间及反应温度对废水BX去除率的影响。结果表明,在pH为3．0—3．5,30％H2O2加入量为7．5mL／L,反应时间1h,反应温度40-45℃条件下,BX总去除率可达80％以上。     

酸化返排液/原油乳状液的破乳脱水研究

 酸化返排液与原油混合可形成稳定性强的乳状液,影响原油的脱水及原油沉降罐的安全运行.通过室内实验考察温度、破乳剂加量、pH 值及降黏剂加量对乳状液黏度和破乳效果的影响,并采用显微镜观察不同阶段乳状液微观形态变化.实验表明:酸化返排液与原油混合成的乳状液其黏度随温度升高先急剧下降,后平缓下降,在温度低于40℃时乳状液稳定性较强,温度50~60℃时,随着温度升高,乳状液脱水率上升幅度不大,综合选取破乳温度为50℃;添加破乳剂有利于降低乳状液黏度,但效果不明显,破乳剂加量越大,乳状液破乳效果越好,当破乳剂加量达到150 mg/L 后,随破乳剂用量加大,乳状液脱水率上升幅度不大,综合选取破乳剂加量为150 mg/L;调节酸化返排液pH 值至6.0～7.0 有利于乳状液破乳,pH 值越高,油水界面变得棱角分明,脱出水的原油结构更加紧密;加入降黏剂后,乳状液脱水速度明显加快.研究结论对指导油田酸化改造后,井口初期返出的乳状液实施破乳具有借鉴作用.     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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。     

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.