泥螺 Bullacta exarata 生长生物学的初步研究

本文研究了浙江沿海泥螺的生长特征。结果表明：泥螺出膜面盘幼虫１６５．６×１４４．０μｍ，日平均生长７．０μｍ，匍匐幼虫日平均生长８．７μｍ，幼螺日平均生长２５．８μｍ，从受精卵化出膜至幼螺约需３０－４０天。在自然海区当年１１月初产卵孵化的幼虫至翌年３月壳高可达０．４ｃｍ，５月底至６月初即可达壳高１．２ｃｍ以上的采捕规格。成螺壳高（Ｈ）与壳宽（Ｂ）、体重（Ｗ）之间的回归关系：Ｂ＝０．７２５７Ｈ－０．０５６６（ｒ＝０．９８２０）、Ｗ＝０．４８７３Ｈ２．６４３０（ｒ＝０．７４２０）。     

中国人体棘阿米巴角膜炎分离株的形态特征和分类鉴定

国内首次发现的两例人体棘阿米巴角膜炎样品在作者所在实验室进行了形态学特征分析和致病性实验。这两个分离株（Ｌ和Ｗ）的形态特征极基相似，滋养体平均长度为２．５μｍ，平均宽度为２１．０μｍ，包囊的平均直径为１３．６０μｍ，外囊贴近内囊，内囊呈多边形，但趋近圆形，内九为５－７；蛋白银染色显示不存在网状结构。两虫株对小鼠均和病力。根据以上特征；作者将这两个中国人体致病性虫株初步鉴定为棘阿米巴在群２中的Ａｃａ     

脉冲式XeCl激光辐照a－Si∶H膜诱导晶化的研究

当脉冲辐照ａ－Ｓｉ∶Ｈ膜的ＸｅＣｌ激光能量密度在２４０ｍＪ／ｃｍ￣２以上时，可引起被辐照膜发生明显的固相晶化；通过拉曼（Ｒａｍａｎ）散射谱、扫描电子显微照象（ＳＥＭ）和紫外（ＵＶ）分光光度吸收谱的实验，研究了不同辐照条件、不同膜厚及各种膜结构试样的晶化效果；还研究了使用ＣＯ＿２激光退火对被辐照膜的影响。结果表明，晶化膜的晶粒大小在０．１～１．０μｍ时，Ｒａｍａｎ位移为５１０ｃｍ￣（－１）～５１７ｃｍ￣（－１）、半峰高宽度为１０ｃｍ￣（－１）～１５ｃｍ￣（－１）；ａ－Ｓｉ∶Ｈ膜经ＸｅＣｌ激光辐照或ＣＯ＿２激光退火后，都会增强晶化膜的吸收效率。     

脉冲式XeCl激光辐照a—Si：H膜诱导晶化的研究

当脉冲辐射ａ－Ｓｉ：Ｈ膜的ＸｅＣｌ激光能量密度在２４０ｍＪ／ｃｍ＾２以上时，可引起被辐照膜发生明显的固相晶化；通过拉曼（Ｒａｍａｎ）散射谱、扫描电子显微照象（ＳＥＭ）和紫外（ＵＶ）分光光度吸收谱的实验，研究了不同辐照条件、不同膜厚及各种膜结构试样的晶化效果；还研究了使用ＣＯ２激光退火对被辐照膜的影响。结果表明，晶化膜的晶粒大小在０．１～１．０μｍ时，Ｒａｍａｎ位移为５１０ｃｍ＾－１～５１７ｃｍ＾－     

呼和浩特市大气颗粒物中几种多环芳烃的粒度分布

将五段多孔冲击分级器（粒径分级：＜１．１,１．１～２．０,２．０～３．３,３．３～７．０,＞７．０μｍ）与大流量采样器连接,于１９９６年冬夏两季采集呼和浩特市居民区、交通区、对照区（较清洁区）大气中的颗粒物,用高压液相色谱仪（ＨＰＬＣ）测定样品中的菲（ＰＨＥＮ）、蒽（ＡＮＴＨ）、芘（ＰＹＲＥ）、苯并〔ａ〕蒽（ＢａＡ）,艹屈（ＣＨＲＹ）、苯并〔ａ〕芘（ＢａＰ）等六种多环芳烃化合物（ＰＡＨｓ）．数据表明：①这六种ＰＡＨｓ在颗粒物中的质量中值直径（ＭＭＤ）,冬夏季均小于１μｍ;ＰＡＨｓ含量冬季平均有９８．５％,夏季有９５．５％富集在小于７μｍ的可吸入颗粒中;②以（质量／体积）浓度比较,冬季居民区、交通区、对照区的ＰＡＨｓ平均值分别高于夏季８０倍,３０倍和１８倍,呈典型的煤烟型污染的季节差异特征．三区浓度比较,冬夏季均居民区＞交通区＞对照区;③以（质量／体积）浓度累积百分数比较,三区７μｍ以下各级颗粒物中ＰＡＨｓ的富集度,冬夏季大多是交通区＞居民区＞对照区,即由于汽车尾气污染,交通区大气中的ＰＡＨｓ在小颗粒上的富集度相对更高些     

斑马鱼（Branchydaniorerio）视网膜正常结构的定量研究

本文采用半薄切片甲苯胺蓝染色方法，对斑马鱼视网膜正常结构进行了形态学观察，并对视网膜各层厚度，特别是神经节细胞层中细胞核的大小和密度进行了定量分析。结果表明：斑马鱼视网膜正常结构象大多数脊椎动物的一样分为１０层，其总厚度为１６７．５±１２．５μｍ、除外、内界膜外、其余各层由外向内分别为：色素上皮层约２９．６±５．９μｍ，视杆视锥层２５．４±３．４μｍ，外核层８．９±ｌ．４μｍ，外网状层８．９±２．０μｍ，内核层２９．５±４．８μｍ，内网状层３７．８±５．６μｍ，神经节细胞层与视神经纤维层一起共２５．９±３．７μｍ，其中神经节细胞核长轴平均约８．０±１．２μｍ，，短轴约７．３±１．１μｍ，每ｍｍ长度中约含１２５．８±４０．０个神经节细胞核。这些数据可为以后更深入的科研工作提供参考价值。同时讨论了斑马鱼视网膜具有典型的光照条件好，白昼活动型的结构特点。     

用高效液相色谱法测定氟氰菊酯的残留量

利用ＰＥ／ＨＳ５Ｃ１８（５μｍ,４．６ｍｍ×２５０ｍｍ）色谱柱,以甲醇＋二氧六环＋水（８５＋１０＋５）为流动相（流速１ｍＬ／ｍｉｎ）,ＵＶ－２５４ｎｍ检测器,用高效液相色谱法测定了羊组织（肌肉、脂肪）和器官（肝脏）中氟氰菊酯的残留量。平均回收率１００．５％,最小检出限０．２５ｎｇ。方法快速、灵敏、准确。     

锑在弱碱溶液中阳极成膜规律的研究

利用恒电位阳极极化电流与极化时间的关系、线性电位扫描及Ｘ射线衍射研究了锑在２．５×１０－５ｍｏｌ／ｍ３ＮａＨＣＯ３＋２．５×１０－５ｍｏｌ／ｍ３Ｎａ２ＣＯ３＋５．０×１０－４ｍｏｌ／ｍ３Ｎａ２ＳＯ４溶液中（ｐＨ＝９．１，３０℃）于１．２Ｖ（ＶＳ．ＳＣＥ）阳极成膜３ｈ，阳极成膜规律及膜相组成与结构。实验结果表明，本工作中的阳极膜主要由Ｓｂ２Ｏ３（斜方）晶体构成，成膜规律为锑的溶解与锑氧离子ＳｂＯ＋的生成→锑氧化物膜的形成与增厚→氧化物膜的钝化。     

板栗密植园树冠结构特征与光能分布规律的研究

采用方格法和分层法对江苏省新沂市沐河棵园４种不同密度（４ｍ×３ｍ、３ｍ×２．５ｍ、３ｍ×２ｍ、２ｍ×１．５ｍ）８年生板栗密植园的树冠结构特征和光能分布规律进行了研究。结果表明：随着密度的增大，树冠直径减小，绿叶层上移，叶幕厚度变薄，树冠体积减少；以叶幕中的光能分布随我照的变化而改变，其日平均透光率大小和光合有效辐射（ＰＡＲ）日变化范围均从叶幕外围向内膛而递减，树冠结构和叶面积指数（ＬＡＩ）对ＰＡＲ     

细管放电产生软X射线激光的研究

介绍了作者在德国达姆斯达特大学（ＴｅｃｈｎｉｓｈｃｅＨｏｃｈｓｃｈｕｌｅＤａｒｍｓｔａｄｔ）应用物理所进行细管放电产生软Ｘ射线激光研究得到的初步实验结果。该细管放电装置的储能仅为４０Ｊ（５０ｎＦ,４０ｋＶ）,放电电流３０ｋＡ,电流上升时间１２０ｎｓ。硼硅酸玻璃（ｐｙｒｅｘ）细管直径为２．５ｍｍ,长度为５ｍｍ。采用预电离氩气的充气细管放电工作方式,气压为１ｈＰａ。等离子体柱的径向压缩速度约为４．５×１０４ｍ／ｓ,它在电流最大时刻附近被箍缩成一根直径为３００μｍ均匀细长柱。所拍摄到的谱线主要来自氩的＋７价（ＡｒⅧ）离子,它说明该装置所产生的等离子体的温度及其对应的氩电离等级接近产生氩类氖离子（ＡｒⅨ）软Ｘ射线激光要求。     

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.