得普利麻两种给药方法用于硬膜外麻醉时镇静的对…

目的：研究得普利麻在硬膜外麻醉时两种给药方法的血药浓度变化和临床效应。方法：将２８例连续硬膜我麻醉下行上腹部手术患分为两组。第１组采用常规给药法：诱导量１．５／（ｋｇ．ｍｉｎ），３ｍｉｎ后开始维持量３ｍｇ／（ｋｇ．ｈ）；第２组以０．１５ｍｇ／（ｋｇ．ｍｉｎ）速度共６ｍｉｎ诱导，随即用与第１组相同维持量。两组诱导时均辅以芬太尼０．１μｇ／ｋｇ。测定给药前及给药后１、３、６、１０、２０、３０ｍｉｎ血     

谷氨酸,褪黑素导致海马脑薄片诱发群体峰电位的 …

在大鼠海马脑薄片上电刺激海马Ｓｃｈａｆｆｅｒ侧支纤维，胞外记录ＣＡ１区锥体细胞层诱导群体峰电位（Ｐｏｐｕｌａｔｉｏｎ Ｓｐｉｋｅ，ＰＳ），观察灌流谷氨酸（Ｇｌｕ）和褪黑素（ＭＥＬ）４０ｍｉｎ，人工脑脊液冲洗３０ｍｉｎ对ＰＳ的影响，结果显示：不同浓度（１．０、１．２５、２．５和５．０ｍｍｏｌ／Ｌ）的Ｇｌｕ作用下，７０ｍｉｎ末ＰＳ值百分经分别为１５６０．５％、１５０．７％、１３．１％、４．１％；并且Ｇ     

1—苯基—3—甲基—4—（α—呋喃甲酰基）—5—吡唑酮与中性萃取剂协同萃取钇（Ⅲ）的研究

本文研究了１－苯基－３－甲基－４－（α－呋喃甲酰基）－５－吡唑酮（ＨＡ）单独萃取Ｙ（Ⅲ）及其与二苯亚砜（ＤＰＳＯ），磷酸三丁酯（ＴＢＰ）或三辛基氧膦（ＴＯＰＯ）协同萃取Ｙ（Ⅲ）的行为。确定了萃合物的组成分别为ＹＡ＿３，ＹＡ＿３·ＤＰＳＯ，ＹＡ＿３·ＴＢＰ和ＹＡ＿２（ＮＯ＿３）·２ＴＯＰＯ．算得萃取平衡常数分别为：ｌｏｇＫ＿（Ａ（ＨＡ））＝－６．８６，１ｏｇＫ＿（ＡＢ（ＨＡ＋ＤＰＳＯ））＝－３．８９，ｌｏｇＫ＿（ＡＢ（ＨＡ＋ＴＢＰ））＝－２．５３和ｌｏｇＫ＿（ＡＢ（ＨＡ＋ＴＯＰＯ））＝５．１３．     

巴西铁的茎组织培养

以巴西铁（Ｄｒａｃａｅｎａ　ｓａｎｄｅｒｉｅｎａ）茎段为接种材料，ＭＳ为基本培养基，吲哚乙酸（ＩＡＡ）、茶乙酸（ＮＡＡ），２，４－二氯苯氧乙酸（２．４－Ｄ）、６－苄氨基嘌呤（６－ＢＡ）、６一糠基氨基嘌呤（６－ＦＡ）、吲哚丁酸（ＩＢＡ）、生根粉（ＡＢＴ１）、玉米素（ＺＴ）为附加成分，进行诱导、分化、生根试验。诱导结果表明：ＩＡＡ不起作用，２，４－Ｄ有较好的促进作用，０．５ｍｇ／Ｌ（２，４－Ｄ）＋２ｍｇ／Ｌ（６－ＢＡ）组合，诱导率高达９０％。分化结果表明：ＮＡＡ、６－ＢＡ效果较好，６－ＦＡ作用不明显，ｌｍｇ／ＬＮＡＡ＋４ｍｓ／Ｌ（６－ＢＡ）＋２ｍｓ／ＬＺＴ组合，分化率最高．达８１．１％。生根结果表明：ＭＳ＋０．５ｍｇ／ＬＮＡＡ＋０．５ｍｇ／Ｌ（６－ＦＡ），ＭＳ＋０．４ｍｇ／ＬＮＡＡ＋２ｍｇ／ＬＩＢＡ，ＭＳ＋０．２ｍｇ／ＬＮＡＡ＋０．１ｍｇ／Ｌ（６－ＦＡ）＋ＡＢＴ１三种培养基均发根，生根率７０％以上，根粗，但有点脆，若培养基中加入活性碳产生的根则细而韧。     

甘蓝型油菜萝卜质不育系恢复材料Ad-6(F4)测交二代恢复株TCF2的快繁及生根

油菜萝卜胞质不育系恢复材料Ａｄ－６（Ｆ４）测交二代恢复株ＴＣＦ２,在ＭＳ附加５ｍ ｇ／Ｌ６－ＢＡ＋ ０．５ｍ ｇ／Ｌ ＮＡＡ,３ｍ ｇ／Ｌ ６－ＢＡ＋ ０．２ｍ ｇ／Ｌ ＮＡＡ,３ｍ ｇ／Ｌ ６－ＢＡ＋ ０．３ｍ ｇ／Ｌ ＮＡＡ＋６００ｍ ｇ／Ｌ水解乳蛋白以及５ｍ ｇ／Ｌ６－ＢＡ＋ ０．３ｍ ｇ／ＬＮＡＡ＋ ５ｍ ｇ／ＬＡｇＮＯ３ 的不同培养基上诱导丛生芽,结果表明５ｍ ｇ／Ｌ６－ＢＡ＋ ０．３ｍ ｇ／ＬＮＡＡ＋ ５ｍ ｇ／ＬＡｇＮＯ３ 对ＴＣＦ２ 诱导丛生芽有较好的效果．小芽生根培养基为１／２ＭＳ效果最好．     

生长调节物质对丹参叶片脱分化及根芽分化的效应

生长调节物质对丹参叶片脱分化及根芽分化效应的研究结果表明：（１）０．５～５．０ｍｇ／Ｌ２，４－Ｄ，０．１～０．５ｍｇ／ＬＮＡＡ０．５～１．５ｍｇ／ＬＩＢＡ或０．２～１．０ｍｇ／Ｌ４ＰＵ－３０诱导叶片的脱分化率高达９７％～１０００％。（２）０．１～０．５ｍｇ／ＬＮＡＡ或０．５～２．０ｍｇ／ＩＢＡ诱导芽化率为９３％～１００％，３种细胞分裂素中，４ＰＵ－３０对叶片芽化最有效，６－ＢＡ和ＫＴ次之。（３）随     

速冻蔬菜的最适烫漂时间与其过氧化物酶活性测定研究

本试验以各种蔬菜：菠菜、芹菜、花菜、芦笋、土豆、大头菜、蒜苗中的过氧化物酶活性为研究对象：在不同温度下进行烫漂处理后其ＰＯＤ活力具有再生现象，于是确定在９５°Ｃ下烫漂得到不同蔬菜的最佳烫漂时间分别为菠菜１ｍｉｎ，蒜苗２．５ｍｉｎ，芹菜３ｍｉｎ，芦笋４ｍｉｎ，青菜１．５ｍｉｎ，大头菜１．５ｍｉｎ，花菜２．５ｍｉｎ，土豆３ｍｉｎ；还进一步比较研究了添加柠檬酸、Ｎａ＿２ＣＯ＿３、ＣｕＳＯ＿４等化学药品对蔬菜烫漂处理中ＰＯＤ活性的影响，结果用适宜浓度的Ｎａ＿２ＣＯ＿３（１０￣（－５）Ｍ）或ＣｕＳＯ＿４（４．０×１０￣（－４）Ｍ）溶液烫漂处理具有护色和杀酶的协同效果。     

古巴芦荟的组织培养

试验结果表明：古巴芦荟（ＡｌｏｅｖｅｒａＬ．）对蔗糖浓度适应范围较大（２％～５％），其中以３％的浓度最适宜．在侧芽诱导中以ＭＳ基本培养基较合适．激素对侧芽的诱导作用符合细胞分裂素／生长素的器官发生调节模式，其中以ＭＳ＋ＢＡ３—５ｍｇ／Ｌ＋ＮＡＡ０．２ｍｇ／Ｌ对芽的诱导最有效，而ＫＣ＋ＩＢＡ２—３ｍｇ／Ｌ对根的诱导最佳，生根率达１００％．在生根培养阶段加入１－３ｍｇ／Ｌ的活性碳是必要的．试管苗移栽的最佳基质是河沙，成活率达９０．２％．     

老年人电视胸腔镜手术32例

探讨电视胸腔镜手术（ＶＡＴＳ）在老年人胸部疾病治疗中的价值。方法：１９９６年６月至１９９８年２月，对３２例年龄为６０～８２（平均６８３）岁的老年人施行ＶＡＴＳ，其中局限性肺切除１０例，肺叶切除５例，肺大泡切除３例，肺癌分期５例，胸膜活检、切除及固定术６例，血胸清肺修补、纵隔肿瘤切除及食管裂孔疝补术各１例。占同期ＶＡＴＳ手术的３７７％。结果：全组无死亡。术后并发症发生率为２１９％。结论：由训练有素并充分了解老年人临床特点的胸外科医生施行ＶＡＴＳ是安全可行的     

甘蓝型油菜萝卜质不育系恢复材料Ad—6（F4）测交二代恢？…

油菜萝卜胞质不育系恢复材料Ａｄ－６（Ｆ４）测交二代恢复株ＴＣＦ２,在ＭＳ附加５ｍｇ／Ｌ ６－ＢＡ＋０．５ｍｇ／Ｌ ＮＡＡ,３ｍｇ／Ｌ,６－ＢＡ＋０．２ｍｇ／Ｌ ＮＡＡ,３ｍｇ／Ｌ ６－ＢＡ｜０．３ｍｇ／Ｌ ＮＡＡ＋６００ｍｇ／Ｌ水解５ｍｇ／Ｌ－６－ＢＡ＋０．３ｍｇ／Ｌ ＮＡＡ＋５ｍｇ／Ｌ ＡｇＮＯ３对ＴＣＦ２诱导丛生芽有较好的效果。     

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.     

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。     

A computer generator for randomly layered structures

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

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.