脱硫副产物与腐植酸混合施用对盐碱土速效养分的影响

以内蒙古呼和浩特市土默特左旗伊利牧场的盐碱地为研究对象，研究了燃煤烟气脱硫副产物对盐碱土的速效磷、速效钾、碱解氮等营养元素的影响。结果表明：盐碱地施用脱硫石膏后对营养元素有一定的影响，速效磷、速效钾、碱解氮与改良前比显著提高，速效磷和碱解氮的变化趋势相似，第二年的含量都高于第一年的，随着时间的持续改良效果显著，速效钾在改良初期明显的增加，之后一直递减，因为没施钾肥，随着植物的利用土壤中钾素递减。盐碱地改良后，施用肥料会提高利用率。     

苹果园白三叶草栽培的效果研究

在苹果园种植白三叶草进行试验研究。结果表明，白三叶草不仅能有效抑制杂草生长、改良土壤结构、调节水分，而且能够显著提高土壤有机质、碱解氮、速效磷、速效钾含量，有利于苹果产量和质量的提高。     

农用治碱聚乙烯波纹管

以高、低压聚乙烯为原料经挤出波纹成型的“农用治碱聚乙烯波纹管”具有耐压、耐腐蚀、质轻、随意弯曲不变形等优点，可用于农业排水治碱，淋盐改土。长期以来，我省许多耕地由于受盐碱侵蚀，加上干旱，严重影响了农业生产的发展，为适应我省农业发展的需要，埋设塑料波纹管，利用地下暗管排水治碱，改造荒地，改良土壤，扩大耕地，提高农作物单位面积产量，已成为我省农田基本建设的重要措施之一。试制生产的“农用治碱聚乙烯波纹管”其物理机械性能已达到Ｑ／ＺＳ０１４—９２“农用治碱聚乙烯波纹管”标准要求，年生产能力达１００万吨，净增产值１０６万元，净增利税１６．５万元。１主要研制工作我们编制的新产品研制方案，是以设备选型、购置和原材料的采购为基础，利用国内已有的聚乙烯原料，对生产工艺、配方进行了筛选，试制生产的“农用治碱聚乙烯波纹管”，合格率达９８％以上。其产品物理机械性能由甘肃省塑料制品质量监督检验站进行了检测，全部符合标准要求。批量生产的产品经酒泉、张掖等地实际应用考核，均能达到暗管排水，改良土壤，渗灌抗旱，增加粮食产量的效果，能满足使用单位的要求，应用效果好。１．１主要原材料和主要设备仪器主要原材料：低压聚乙烯塑料（ＨＤＰＥ）大庆高压聚...     

松嫩平原盐碱化草地改良治理的研究

松嫩平原草地目前出现大面积盐碱化和碱斑，严重影响畜牧业的发展，加速生态环境的恶化，对其进行改良和治理已是科研和生产亟待解决的问题，我们在出现大面积盐碱斑的草地上开展了自然封育，生物，化学，物理和工程等改良治理的研究，通过多年的实验，证明上述措施都有一定的效果，但以生物措施治盐碱效果为最好，为今后碱化草地的改良治理提供了理论依据和治理措施。     

不同固废及其处理产物对黄骅港盐碱土的改良效果

【目的】探究不同固废及其处理产物对盐碱土的改良效果,促进固废消纳的同时为渤海湾盐碱地治理提供理论依据。【方法】以河北省沧州渤海新区黄骅港盐碱土为研究对象,通过土壤改良和盆栽试验,分析对照组(CK)、炉渣+煤矸石(S10、S50和S100)、生物炭(C10、C50、C100)和木醋液(V300、V100和V50)对土壤盐碱性状、养分状况和盐地碱蓬(Suaeda salsa)农艺性状的影响。【结果】各处理均可降低原始土样pH、可溶性盐总量和碱化度,同时提高土壤养分含量并促进盐地碱蓬生长,但是不同处理之间存在差异(P<0.05)。木醋液对土壤盐碱状况的改良效果最优,其中V300处理的土壤pH、可溶性盐总量、交换性钠离子和碱化度均最小,但土壤养分状况和盐地碱蓬生长状况不理想。炉渣+煤矸石虽然对土壤盐碱状况的改良效果最弱,但该处理下土壤有机质含量与盐地碱蓬生长状况优于其他处理;其中S50处理下土壤有机质含量及植物发芽率、发芽指数和生物量分别为13.05 g/kg、80.40%、47.75%和99.56 g,显著高于其他处理(P<0.05)。生物炭对土壤盐碱和养分状况的改良效果及对盐地碱蓬生长的促进效果居中。【结论】炉渣+煤矸石、生物炭和木醋液均具有一定降盐碱、提高土壤养分含量、促进盐地碱蓬种子萌发和植株生长的作用,且S50处理对土壤养分和盐地碱蓬生长的改善效果最优,可作为渤海湾黄骅港盐碱地改良措施。     

碱激发秸秆灰渣改良膨胀土试验研究

通过室内试验,探讨利用碱激发秸秆灰渣改良膨胀土的可行性及改良效果。试验研究了秸秆灰渣、碱激发秸秆灰渣改良膨胀土的基本工程性质指标、击实特性、胀缩特性及无侧限抗压强度的影响特征。试验研究结果表明,随着秸秆灰渣的增加或者碱溶液浓度的增加,膨胀土的塑性指数、自由膨胀率、膨胀量与膨胀力逐渐减小,这说明掺秸秆灰渣可有效降低膨胀土的胀缩性。击实样经养护后的膨胀试验结果表明,随着养护龄期的增加,膨胀土的膨胀力明显减小。无侧限抗压强度试验结果表明:没有经过养护的土样,碱激发秸秆灰渣对无侧限抗压强度的影响不够明显;经过7 d养护后,随着掺秸秆灰渣的增加,土样的无侧限抗压强度具有一定程度的提高,并且无侧限抗压强度存在一个峰值点。     

一种适合芽孢杆菌质粒DNA提取的改良碱裂解法

以Birnboim和Doly的质粒提取方法为基础,通过缩短菌体培养时间,增加菌体收集量,并对提取过程中所用的三种主要溶液的用量进行适当调整等,摸索出质粒提取的一种改良碱法.用改良后的碱法对浸麻芽孢杆菌、地衣芽孢杆菌和枯草芽孢杆菌进行质粒提取,均获成功.     

碱-碳酸盐反应热力学讨论

应用热力学方法探讨了温度对碱－碳酸盐反应的影响，反应温度升高时，反应的推动力减弱。对碱与碳酸盐发生反应生成沉淀时所需碱的浓度以及温度的影响进行了讨论。298K，PH≥10．6时，碱－碳酸盐反应能发生，反应温度升高，碱－碳酸盐反应所需碱的浓度相应增大，对氢氧化锂与碳酸盐反应可能生成碳酸锂沉淀时溶液的碱的浓度作了计算，298K，PH≥13．1时，氢氧化锂与碳酸盐反应除生成水镁石和方解石外还能生成碳酸锂沉淀，反应温度升高时，反应生成碳酸锂沉淀所需碱的浓度变化不大。     

ALLIANCE自动分析仪测定烟草及制品中的挥发碱

法国ＡＬＬＩＡＮＣＥ自动分析仪的挥发碱通道可测定烟草及制品中的挥发碱，该仪器性能稳定，能快速简便、大批量地测定烟草及其制品中的挥发碱，其测定结果与经典的蒸馏法比较，仪器的精密度和准确度均能达到分析要求，符合新国标的检测标准，结果满意．     

粉煤灰对骨料碱活性抑制工程实例

对于混凝土而言，骨料是否是碱活性骨料直接影响到混凝土的耐久性。当混凝土处于水中时，活性骨料能与碱K2O及Na2O）反应，产生体积膨胀，使混凝土遭受破坏。因此，骨料的碱活性试验是必须评判的检测指标。结合嘉陵江巨亭水电站工程实例，简述粉煤灰对于骨料碱活性的抑制作用。     

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.     

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.     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-