VA菌根感染含羞草的研究初报

用盆栽方法研究了灭菌条件下接种两种 Ｖ Ａ 菌根真菌对含羞草生长的影响。结果表明,接种 Ｖ Ａ 菌根真菌能显著地提高菌根的侵染率,植株高度、地下部鲜重和地上部鲜重明显高于对照株。两种 Ｖ Ａ 菌根的感染效果几乎相同     

非灭菌条件下VA菌根真菌对紫茉莉幼苗生长的影响

用盆载方法研究了非灭菌条件下,接种ＶＡ菌根真菌Ｓｅｌｅｒｏｃｙｓｔｉｓ ｓｉｎｕｏｓａ对紫茉莉幼苗生长发育的影响。结果表明,中ＶＡ菌根真菌能提高ＶＡ菌对紫茉蓝的浸染率,接种株的营养生长叶绿素含量和花青素含量优于对照株,说明接种ＶＡ菌根真菌能促进紫茉莉的幼苗生长。     

丝瓜果实发育中木质素代谢及有关导管分化的生理生化研究

丝瓜果实发育期间，随着木板素含量的不断增加，导管分子大量分化，ＰＡＬ和ＣＡＤ的活性高峰出现在木质素大量合成之前的第５天和第７天，证实ＰＡＬ和ＣＡＤ是导分子分化的标志酶，测定了ＰＯＩ，ＰＯⅡ，ＰＯⅢ的活性，结果表明，ＰＯＩ，ＰＯⅡ与木质化进程有关，ＰＯＩ同工酶的电泳结果显示，Ａ７带和Ｃ２带与木质化进程有关。     

高原型和山谷型藏山羊生态特征比较研究

对高原型和山谷型藏山羊的体态、被皮、解剖、生理和生化遗传标记等生态特征的比较研究表明：高原型比山谷型藏山羊体格较大；毛被白色者较多、毛丛较长、单位皮肤面积次级毛囊较多，产线量高；气管、肺和心脏较发达；血液中ＲＢＣ、ＷＢＣ、Ｈｂ均较高；体温、皮温均较低，两型藏山羊的Ｈｂ、Ａｌｂ、Ａｍ经电泳均显示一条带，无多态性，高原型藏山羊的Ｔｆ有３种基因型，即ＡＡ、ＡＢ、ＢＢ，而山谷藏山羊Ｔｆ只有两种基因型，即ＡＡ、ＡＢ。基因频率经ｘ检验差异不显著（Ｐ＞０．０５）。两型藏山羊的ＡＫＰ同工酶均有两种基因型，即ＡＫＰＦ和ＡＫＰＯ，ＡＫＰ基因频率经ｘ检验差异不显著（Ｐ＞０．０５），不论是高原型还是汕谷型藏山羊的ＥＳ同工酶均有多态性，都有３个带，但两者的Ｅ＿ｓ同工酶带有明显差异，区带－Ⅱ－２、带－Ⅲ－３、带－Ⅱ－４、带－Ⅲ－２对应比较，差异极显著（＞０．０１）；带－Ⅰ－１、带－Ⅰ－３、带－Ⅲ－１对应比较差异显著（Ｐ＜０．０５），高原型和山谷型山羊的ＬＤＨ同工酶均有５条带，其活力顺序均为ＬＤＨ＿１＞ＬＤＨ＿３＞ＬＤＨ＿２＞ＬＤＨ＿５＞ＬＤＨ＿４，各带对应比较，两个生态类型藏山羊间ＬＤＨ＿１、ＬＤＨ＿２活力差异极显著（Ｐ＞０．０１）；     

果树VA菌根研究进展

综述了果树ＶＡ菌根真菌的资源及分类；形态解剖；ＶＡ菌根对果树的效应及在果树上的应用。     

果树VA菌根研究进展

综述了果树ＶＡ菌根真菌的资源及分类；形态解剖；ＶＡ菌根对果树的效应及在果树上的应用。     

球形大孔聚氯乙烯树脂的化学转化Ⅲ.硫脲树脂的合成及其性能研究

球形大孔聚氯乙烯树脂（ＰＶＣ）与多乙烯多胺反应，生成胺化交联树脂．胺化树脂与含硫试剂和异硫氰酸苯脂反应，制得不同硫脲结构的ＴＵ－Ⅰ和ＴＵ－Ⅱ螯合树脂．ＴＵ－Ⅰ对Ａｕ（Ⅲ），Ｐｔ（Ⅳ），Ｐｄ（Ⅱ）有很大的饱和吸附量，吸附Ａｕ（Ⅲ）时出现边吸附边还原析出金的现象．ＴＵ－Ⅱ在低酸度下对Ｐｄ（Ⅱ）的吸附率仅为１５％，而对Ａｕ（Ⅲ），Ｐｔ（Ⅳ）的吸附率仍在９０％以上．ＴＵ－Ⅰ，ＴＵ－Ⅱ不吸附或少量吸附贱金属离子，显示出对贵金属离子的高选择性吸附能力，具有一定的应用前景     

斜纹夜蛾NPV多角体基因的克隆和部分测序

本文对ＳＩＮＰＶ基因组作了酶解分析，测得其基因组大小为１４５ｋｂ，并用双酶法确定了ＳＩＮＰＶ基因组的ＨｉｎｄⅢ和ＰｓｔⅠ物理图谱。以含ＡｃＮＰＶ多角体基因的质粒ｐＡＣ－Ⅰ的ＳａｌＩ－Ｃ片段为探针，对ＳＩＮＰＶＤＮＡ酶切片段ｓｏｕｔｈｅｒｎ转印杂交结果，初步判断多角体基因定位于ＰｓｔＩ－Ｂ／Ｃ／Ｄ片段、ＢｇｌⅡ－Ｃ／Ｄ片段、ＢａｍＨＩ－Ｂ／Ｃ片段和ＥｃｏＲＩ－Ａ／Ｂ片段上，且ＳＩＮＰＶ与ＡｃＮＰＶ多角体蛋白基因有６４％的同源性，而以大肠仟菌质粒ｐＵＣ１９为载体对ＳＩＮＰＶ的多角体基因试克隆，得到带有ＢｇｌⅡ－ＰｓｔⅠ双酶切片段的２个克隆子。对这两个杂交阳性克隆子之一的核苷酸序列测定，表明插入片段与ＢｍＮＰＶ多角体基因上游序列亦有一定同源性。     

低温处理对三种作物幼苗生长及组织内POD、ATP_（ase）同工酶的影响

为了研究三种作物中ＰＯＤ、ＡＴＰａｓｅ同工酶的变化与低温忍耐的关系，我们将三种作物幼苗在０—４℃低温下处理１周，然后检查三种作物根系中的ＰＯＤ、ＡＴＰａｓｅ同工酶，结果发现，低温处理下的三种作物根系中的ＰＯＤ同工酶谱带减少，该同工酶的变化与作物的耐低温能力存在一定的相关性。     

1—4℃低温对番茄,菜花幼苗生长及胚轴同工酶的影响

１－４℃低温下培养番茄、菜花两种蔬菜幼苗发现，番茄对寒害反应敏感，菜花则耐寒性很强，测定两种幼苗胚轴内ＡＴＰａｓｅ、ＰＯＤ同工酶发现，番茄中两种酶同工酶的谱带数减少，菜花中同工酶未见变化，表明蔬菜幼苗耐寒性强弱与胚轴内ＡＴＰａｓｅ，ＰＯＤ同工酶的变化呈明显的相关性，这一结果可为探讨蔬菜幼苗的耐寒性机理提供依据。     

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.     

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。     

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.