盘锦市重点行业企业污染源废水综合毒性研究

本文通过对盘锦市22个行业的29家企业废水采用生物毒理指标(发光细菌、斑马鱼、蚕豆根尖微核)进行测试,应用废水生物综合评价体系;分析研究了工业废水的综合毒性,并根据废水处理前、后毒性变化值,监控废水处理设施处理效果,对生物监测体系的应用、推广起到了积极的促进作用,对环境污染的溯源、监督提供了质量保证体系。     

循环活性污泥复合生物反应器废水处理技术及其评价

介绍了循环活性污泥复合生物反应器废水处理技术的工艺原理和组成、国内外类似研究的现状及进展情况,对循环活性污泥复合生物反应器废水处理工艺的主要技术特征、优点及其经济性进行了分析与评价.     

膜生物反应器处理工业废水的应用研究

介绍了膜生物反应器的类型,并列举了膜生物反应器在不同行业中废水处理中的应用。     

膜生物反应器在废水处理中的应用及研究进展

随着废水处理技术的不断发展,一些新的废水处理方法不断涌现。把膜分离技术与污水的生物处理法相结合构成了一种新型污水生物处理工艺——膜生物反应器,它是一种新型高效的污水处理工艺。文章综述了膜生物反应器的分类及基本结构,膜生物反应器在国内外的研究以及应用中存在的主要问题和解决方法,并对新型膜生物反应器的原理和应用进行了讨论。     

膜生物反应器在废水处理中的研究和应用

膜分离技术与废水生物处理技术的有机结合——膜生物反应器是一种新型高效的污水处理工艺.综述了膜生物反应器的基本运行方式,膜生物反应器在国内外的研究和应用概况以及应用中存在的主要问题.对膜生物反应器在我国未来废水处理领域的应用前景进行了讨论.     

微生物在废水处理技术中的应用现状

微生物技术是一种有效的废水生物处理技术,微生物在废水处理中的应用包括：高效厌氧技术在印染废水处理中的应用、生物制剂在废水处理中的应用、膜生物反应器在废水处理中的应用、陶瓷膜超滤术在含油废水处理中的应用等。     

微生物在废水处理技术中的应用现状

微生物技术是一种有效的废水生物处理技术,微生物在废水处理中的应用包括:高效厌氧技术在印染废水处理中的应用、生物制剂在废水处理中的应用、膜生物反应器在废水处理中的应用、陶瓷膜超滤术在含油废水处理中的应用等。     

新型骨组织工程体内生物反应器内晶体液交换规律

建立一种新型的骨组织工程体内生物反应器,观察该生物反应器内的晶体液及溶质交换指标,评价该体内生物反应器应用于骨组织工程细胞培养的可行性。①将12只成年新西兰大白兔随机分为两组,每组6只,分为含和不含不锈钢支撑架的两组。在每只白兔背部利用筋膜建立一个含或不含不锈钢支撑架的筋膜囊袋(生物反应器)。按统一标准构成2cm×2cm的筋膜包囊。②24h后经检验筋膜囊袋确认密闭性良好,再向囊袋内内注入2mL生理盐水。③在注入生理盐水后0h、1h、2h、3h、4h时间点,在直视下抽吸残余液体,测定液体量后再测定残液内Ca2 ,PO43-,Na ,K ,Cl-等离子浓度和pH值,同时测定兔血浆相应离子浓度。此新型体内生物反应器内在注入晶体液后,迅速和血浆进行溶质交换,随时间推移晶体液内离子成分浓度向血浆靠近,4h后晶体液基本吸收完全,含支架组与不含支架组的晶体液吸收速率不存在差异(P=0.067),初步测定晶体液吸收速率为:0.125mL/(h·cm2)。说明此新型体内生物反应器内晶体液渗透速率较快,能和体内内环境之间进行快速的物质交换,同时培养器容积可以满足培养长节段人工骨的需要,具备进行体内组织工程骨细胞复合结构中细胞营养交换的基本要求。     

基于欧式贴近度的模糊物元模型优选奶牛养殖废水处理工艺

目的从技术性能、经济费用、管理效果三方面对UASB+SBR、UASB+生物接触氧化法处理奶牛养殖废水进行工艺优选.方法在模糊物元分析的基础上,结合欧氏贴近度的方法,对奶牛养殖废水处理工艺进行对比评价.以试验室中试实测备选方案的化学需要量(COD)、五日生化需氧量(BOD5)、氨氮(NH3-N)、总磷(TP)、悬浮物(SS)的去除率为基础,利用均方差法确定指标权重,得出欧式贴近度.结果UASB+SBR的技术性能最优,UASB+生物接触氧化法的经济效益和管理效果最优,综合评价UASB+SBR的欧式贴近度值为0.341 2,高于UASB+生物接触氧化法欧式贴近度值.结论"UASB+SBR"为最佳组合工艺,为奶牛养殖废水处理技术产业化过程中性能评估提供了科学的依据.     

复合好氧生物法处理高质量浓度抗生素废水

采用复合好氧生物法为主的工艺处理高质量浓度抗生素废水。可达到COD和BOD5的去除效率≥95％的处理效果．对比试验表明,对难生物降解物质含量高的废水应用连续流处理工艺比间歇流处理工艺更为适宜．本复合式好氧处理反应器中能够形成复杂的微生物复合生态体系。改善了污泥的沉降性能,增强了反应器的处理能力．研究结果是在大型废水处理工程中得到的,可为同类高质量浓度有机废水好氧生物处理工程的建设提供技术参考数据．     

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.     

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.     

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.