螺旋藻的磁处理培养

就磁场处理技术对螺旋藻培养过程的强化进行了研究，发现螺旋藻的培养能明显地被适当的磁场处理所刺激，在强度为200－320kA/m的外加磁场作用下培养至第6天，螺旋藻最大细胞干重达2.76g/L,比同等条件下的空白对照试样多46．8％，其比生长率由0.4d^-1增至0.6d^-1，培养周期可缩短2－3d,同时，螺旋藻中蛋白质的含量增加了5.2mg/g，氨基酸总含量（除色氨酸外）增加了0.71mg/g，其中必需氨基酸增加了3.15mg/g，此外，微量元素Sr,Ni,Cu,Mn和Zn等均有显著增加，其中Sr和Ni分别增加了22.3和5．1倍，文中最后讨论了磁场处理对螺旋藻培养的强化机制，指出这种刺激作用与磁场处理加速了螺旋藻的光合作用和强化了其营养吸收有关。     

钝顶螺旋灌对五种元素生物富集作用的研究

研究不同浓度的Fe2 ,Mn2 ,Cu2 ,Zn2 ,Se对钝顶螺旋藻富集量的影响,结果表明,螺旋藻对环境中的这些金属离子的均具有较强的富集能力,在Fe2＋浓度对21．9mg/L,Mn2浓度1．65mg/L,Cu2 浓度0．1mg/L,Zn2 浓度1．49mg/L,Se浓度100mg/L,螺旋藻对它们的富集率最大,在1g干藻粉中其含量分别达到,铁2．7mg,锰31．9ug,铜12．46ug,锌212ug,硒408ug.     

金银木粗脂肪、维生素C和类胡萝卜素的含量分析

对金银木的根、茎、叶、花、果5种器官内的水分、粗脂肪、维生素C、类胡萝卜素含量进行了测定,并考察了过氧化氢、温度和光照对类胡萝卜素稳定性的影响.结果表明,金银木的叶、花、果中含有丰富的粗脂肪、类胡萝卜素和维生素C,其含量分别为叶(粗脂肪4.93 g/100 g,类胡萝卜素3.83 mg/100 g,VC52.3 mg/100 g)、花(粗脂肪3.12 g/100 g,类胡萝卜素2.22 mg/100 g,VC61.4 mg/100 g)、果(粗脂肪9.19 g/100 g,类胡萝卜素8.84 mg/100g,VC 112.9 mg/100 g);类胡萝卜素的稳定性在低氧化剂、25℃和避光条件下较好.     

螺旋藻对果蝇寿命的影响

研究螺旋藻对果蝇寿命的影响,为进一步开发螺旋藻的食用保健功效提供理论依据.以常见的黑腹果蝇为材料,将10 h内羽化的雌雄果蝇放在含螺旋藻的玉米粉培养基中,其中螺旋藻的质量梯度分别为0 g/L、2 g/L、4 g/L、6 g/L、8 g/L、10 g/L,紫外灯下照射30 min后放入恒温箱内培养,记录果蝇的生存情况及死亡时间.结果表明：螺旋藻随着质量梯度的增大,对果蝇寿命均有不同程度的延长,其中,8 g/L实验组能极其显著地提高雌雄果蝇的平均寿命、半数死亡时间和最高寿命（p＜0.01）;同一质量梯度下,螺旋藻对雌果蝇延寿率的影响大于对雄果蝇的影响,其对雌雄果蝇延寿率影响的差别在8 g/L实验组中达到最大,为4.35%.     

水提分离钝顶螺旋藻藻蓝蛋白及其稳定性研究

应用水提法分离钝顶螺旋藻藻蓝蛋白后,考察了螺旋藻细胞破碎液的藻液比、盐离子浓度、pH和环境温度等对藻蓝蛋白分离的影响,并对藻蓝蛋白的耐热性能及耐酸碱性能进行了研究.结果表明：用藻液比为5 g/L及50%（NH4）2SO4进行盐析沉淀,提取藻蓝蛋白的收率可达62.4 mg/g藻粉;螺旋藻藻蓝蛋白在常温时保持稳定,在较高温度时稳定性下降;在中性溶液环境时,藻蓝蛋白的稳定性良好,偏酸或偏碱环境均改变螺旋藻藻蓝蛋白的性能.     

碳酸氢铵防治轮虫及其对螺旋藻生长的影响

在螺旋藻大规模、开放式养殖过程中,利用碳酸氢铵对受轮虫污染危害的螺旋藻培养液进行杀虫处理。结果表明：当碳酸氢铵剂量〉150 mg/L时,螺旋藻轮虫的防治效果在24 h内可达90%以上,剂量越大杀虫效果越好,耗时越少;当碳酸氢铵剂量〉250 mg/L时,杀虫效果提高的同时对螺旋藻群体的生长也会产生不同程度的抑制和危害;当碳酸氢铵剂量〈100mg/L时,轮虫防治效果不到50%,生产实践中无应用价值。正常情况下利用碳酸氢铵进行大规模防治螺旋藻培养液轮虫时的剂量推荐为200 mg/L左右,并在条件许可时于傍晚前后施用为佳。     

两性花毛葡萄NW196鲜果的主要营养和功能成分分析

分析测定酿酒葡萄新品种两性花毛葡萄NW196成熟鲜果中的营养和功能成分,发现NW196成熟鲜果营养丰富,其中游离氨基酸含量为168.8mg/100ml、总糖为15.6g/100ml、维生素C为4.86mg/100ml、总酸为1.5g/100ml、白藜芦醇为0.41mg/100ml。两性花毛葡萄NW196是一种富含营养的葡萄酒酿酒原料。     

用鞣酸和香兰素诱发乙醇饮料老熟的研究

本文报道了用植物材料的提取液处理含乙醇的饮料可促其老熟.处理乙醇饮料的原料成分,经分析有香兰素30～100mg/L、鞣酸8～42g/L、5-羟甲基糠醛0.5～50mg/L.这种原料它的 UV 光谱最大吸收在205和280nm 之间,其光密度值在225～230nm 有一凸起部分,它是从槲栎中提取出来的.本研究经实验取得了满意的结果,为乙醇饮料的人工催熟开辟了一条易于推广的途径.     

生物炭材料的制备及其应用效果研究

研究以小麦秸秆、水稻秸秆和油茶果壳为原料,采用水蒸气活化和磷酸再活化的工艺,制备出性能优良的生物炭样品,分析麦秆、稻秆和油茶果壳生物炭样品的性能以及制备条件对生物炭性能的影响。研究结果显示,试验制备得到的麦秆生物炭,其亚甲基蓝吸附值为225 mg/g,碘吸附值为838 mg/g,焦糖为120%,比表面积为1 279 m2/g,孔容为1.36 m3/g,中孔率为76.6%,而稻秆生物炭的炭亚甲基蓝吸附值为215 mg/g,碘吸附值为815 mg/g,焦糖100%,比表面积为967 m2/g,孔容为1.23 cm3/g,中孔率为84.6%,2种原料制备的生物炭与市售生物炭的性能指标相近;油茶果壳生物炭对亚甲基兰和碘的最大吸附值分别为330 mg/g和1 326 mg/g。本研究制备的油茶果壳生物炭的主要质量指标均达到或超过了净水用活性炭国家标准。本研究表明,小麦秸秆、水稻秸秆和油茶果壳可以作为制备优质生物炭的原料。     

改性花生壳粉对Mn^2＋的吸附

以花生壳为原料,用甲醛和环氧氯丙烷为改性剂制备了甲醛和环氧氯丙烷改性花生壳粉吸附剂,并考察了其吸附Mn^2＋的影响因素即吸附溶液的pH、金属离子初始质量浓度、吸附时间等.结果表明：在10 g花生壳粉中分别加入1.25 mol/L的NaOH溶液80 mL和环氧氯丙烷30 mL,置于水浴锅中于40℃搅拌反应1 h,水洗干燥后得到环氧氯丙烷改性花生壳粉,用此改性的花生壳粉吸附Mn2＋的最佳条件为：pH值5.0、吸附30 min,用0.2 g环氧氯丙烷改性花生壳粉处理10.0 mg/L的Mn^2＋溶液25 mL吸附率可达100%,最大吸附量不低于29 mg/g;未改性花生壳粉和甲醛改性花生壳粉对Mn^2＋的吸附率仅为53%和43%,最大吸附量分别为5.96 mg/g和1.32 mg/g.     

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.     

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.     

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.     

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.     

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.     

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-