缺氧性肺动脉高压大鼠的降钙素基因相关肽含？…

目的：研究降钙素基因相关肽（ＣＧＲＰ）对氧性肺动脉高压（ＨＰＨ）的影响。方法：应用常压氧方法建立大鼠肺动脉高压动物模型;采用酶联免疫测定法大鼠血浆降钙素基因相关肽的含量,用免疫组织化学染以法观察肺组织中ＣＧＲＰ的分布。结果：缺氧组大鼠血浆ＣＧＲＰ含量较正常对照组有明显下降,且血浆ＣＧＲＰ水平与肺动脉平均压呈负相关;正常在鼠肺组织有极少量ＣＧＲＰ样免疫物质,缺氧组大鼠肺组织有大量ＣＧＲＰ样免疫物质,     

当归注射液对兔主动脉平滑肌细胞中增殖细胞核抗原表达的影响

目的：观察当归注射液对平滑肌细胞（ Ｓ Ｍ Ｃ） 中增殖细胞核抗原（ Ｐ Ｃ Ｎ Ａ） 表达的影响。方法：用免疫组织化学 Ｌ Ｓ Ａ Ｂ 法检测培养的兔主动脉 Ｓ Ｍ Ｃ 中 Ｐ Ｃ Ｎ Ａ 的表达,同时测定培养液中超氧化物歧化酶（ Ｓ Ｏ Ｄ） 、脂质过氧化物（ Ｌ Ｐ Ｏ） 、前列环素（ Ｐ Ｇ Ｉ２） 及环磷酸腺苷（ｃ Ａ Ｍ Ｐ） 的含量。结果：当归注射液能增加 Ｓ Ｏ Ｄ 活性,降低 Ｌ Ｐ Ｏ 和升高 Ｐ Ｇ Ｉ２ 、ｃ Ａ Ｍ Ｐ 水平,抑制 Ｓ Ｍ Ｃ 中 Ｐ Ｃ Ｎ Ａ 的表达（ Ｐ＜ ００５ ～００１） 。结论：当归有抑制 Ｓ Ｍ Ｃ 增殖的作用。     

食用油烟对大鼠体内脂质过氧化反应的影响

本研究采用动式染毒技术，将大鼠分成４个浓度组吸入豆油油烟（油温２２０℃），观察血中ＳＯＤ，ＧＳＨ，ＭＤＡ含量，肺组织中ＬＤＨ，ＡＣＰ，ＭＤＡ和肺巨噬细胞（ＰＡＭ）膜脂流动性（ＬＦＵ）等指标的变化，探讨吸入油烟的急性毒作用机理。实验结果表明：油烟平均浓度为１．０５ｍｇ／ｍ＾３时，血浆及肺组织中ＭＤＡ开始增加（Ｐ〈０．０５），且含量随吸入油烟量增加；平均浓度为９．５８ｍｇ／ｍ＾３时，全血ＳＯＤ活力明显     

不同配合饲料对南方鲇幼鱼鱼体组成的影响

采用６种营养组分含量不同的配合饲料对南方鲇（Ｓｉｌｕｒｕｓｍｅｒｉｄｉｏｎａｌｉｓ）幼鱼进行了６周（４３ｄ）的摄食—生长实验,测定并比较了实验前后的鱼体组成,分析了饲料组成对鱼体组成的影响．结果发现：鱼体蛋白质含量与饲料蛋白质含量呈显著正相关,直线回归方程为：Ｙ＝５８０６＋０１１Ｘ（Ｒ＝０７５,Ｐ＜００１）;鱼体脂肪含量与饲料的比能值呈显著负相关,直线回归方程为：Ｙ＝５６３４－１６３Ｘ（Ｒ＝－０６１,Ｐ＜００１）;鱼体灰分含量与饲料脂肪含量（Ｘ１）和饲料的蛋白质与碳水化合物的比值（Ｘ２）显著相关,多元回归方程为：Ｙ＝１５６２－０５４Ｘ１＋０５０Ｘ２（Ｒ＝０６５,Ｐ＜００１）;鱼体的蛋白质与能量的比值和饲料的蛋白质与碳水化合物的比值显著正相关,直线回归方程为：Ｙ＝２６１４＋０３９Ｘ（Ｒ＝０６２,Ｐ＜００１）;鱼体水分含量和比能值分别与饲料的组成均没有显著的相关性     

NO样舒张因子和内皮素在急性缺氧肺动脉高压中的作用

在大鼠急性缺氧肺动脉高压模型、离体灌流肺动脉环模型及培养的牛肺动脉内皮细胞探讨ＮＯ样舒张因子（ＮＯ－ＬＲＦ）和内皮素（ＥＴ）在急性缺氧肺动脉高压中的作用。结果发现：ＮＯ合成前体Ｌ－Ａｒｇ（２５０ｍｇ／ｋｇ，ｉｖ）可有效降低急性缺氧肺动脉高压的幅度；在内皮完整血管环加入ＮＯ合成抑制剂Ｌ－ＮＮＡ（１０－４ｍｏｌ／Ｌ）、ＮＯ合成前体Ｌ－Ａｒｇ（１０－２ｍｏｌ／Ｌ）分别升高（＋８０％，Ｐ＜０．０１）和降低（－３５％，Ｐ＜０．０５）缺氧肺动脉收缩幅度，给予硝酸甘油（１０－４ｍｏｌ／Ｌ）直接补充ＮＯ可降低缺氧肺动脉收缩幅度；此效应可被可溶性鸟苷酸环化酶抑制剂亚甲蓝部分逆转；内皮素抗血清或内皮素Ａ受体结抗剂ＢＱ１２３对急性缺氧肺动脉高压及缺氧肺动脉收缩没有明显影响；Ｎｏｒｔｈｅｒｎ印渍杂交技术显示缺氧使培养的牛肺动脉内皮细胞ＮＯ合成酶（ＮＯＳ）基因表达明显受抑乃至缺失．结果提示：缺氧时ＮＯＳ基因表达受抑及ＮＯ－ＬＲＦ合成释放降低可能是急性缺氧肺动脉高压的发生机制之一，内皮素不起主要作用．     

α—促黑素细胞激素对IL—1β刺激离体兔下丘脑释放PGE2的抑制作用

采用体外组织培养法观察α－促黑素细胞激素（α－ＭＳＨ）对白细胞介素－１β（ＩＬ－１β）刺激家兔下丘脑组织释放前列腺素Ｅ２（ＰＧＥ２）的影响。结果显示,ＩＬ－１β与下丘脑组织培养后４０ｍｉｎ,培养上清液中ＰＧＥ２含量高于未加ＩＬ－１β的对照组（Ｐ＜００１）;而预先（２０ｍｉｎ）加入α－ＭＳＨ,再加入同量ＩＬ－１β培养４０ｍｉｎ,则培养上清液的ＰＧＥ２含量接近对照组水平（Ｐ＞００５）。α－ＭＳＨ抑制下丘脑ＰＧＥ２的产生,可能是其解热的重要机制之一。     

哺乳期香猪某些生化常值和血清酶及无机盐的测定与分析

春产香猪哺乳期体重为２．８７±０．６５ｋｇ，本文采用临床常规方法时１０头公猪和５头母猪分别进行血浆纤维蛋白原，血清蛋白、血糖、ＴＧ、ＣＨＯＬ、ＤＨＬ和ＧＯＴ、ＧＰＴ、ＡＬＰ、ＡＣＰ、Ｃｈｅ、γ－ＧＴ及血清（Ｃａ、Ｐ、Ｎａ、Ｋ与Ｃｌ的测定与分析．结果表明：公猪和母猪在哺乳期于性别上除氨酰转肽酶差异显著（０．０１＜Ｐ＜０．０５）、酸性磷酸酶差异极显著外，其他指标无明显差异（Ｐ＜０．０５）。分类号：Ｑ５９２．１     

黑白花乳牛关节滑膜炎的研究Ⅰ．两性霉素B诱发急性浆液性腕关节滑膜炎的实验研究

对７头一岁龄健康黑白花乳牛的１４个腕关节内注射两性霉素Ｂ（１２．５ｍｇ／关节），成功诱发急性浆液性腕关节滑膜炎（ＡＳＣＳ）．注射前及诱发关节炎后（注射后４８ｈ）分别抽取正常及炎性腕关节滑液（ＳＦ）样品，同时采集血液样品待检，检测结果表明：乳牛ＡＳＣＳ时，ＳＦ中细胞总数（ＴＣＣ）、总蛋白（ＴＰ）、乳酸脱氢酶（ＬＤＨ）、碱性磷酸酶（ＡＬＰ）、γ－谷氨酰转肽酶（γ－ＧＴ）、蛋白及ＬＤＨ同功酶各组分含量均显著增加（Ｐ＜０．０１）；蛋白及ＬＤＨ同功酶各组分百分含量（％）显著改变：白蛋白（Ａ）显著降低（Ｐ＜０．０１），α、β、γ球蛋白均显著升高（Ｐ＜０．０１），Ａ：Ｇ值（白／球比）显著下降（Ｐ＜０．０１），ＬＤＨ１显著下降（Ｐ＜０．０１），ＬＤＨ２、ＬＤＨ３、ＬＤＨ４、ＬＤＨ５增加，但差异不显著（Ｐ＞０．０５），以上各成分的对应血清值均无显著变化（Ｐ＞０．０５）．关节滑液（ＳＦ）的检测为乳牛关节炎症提供了准确诊断方法和依据，并可揭示关节在病理状态下的代谢状况，具有重要的临床指导意义．     

HSP70在肺癌组织中表达水平的研究

采用免疫组织化学ＳＡＢＣ法检测３９例肺部组织中ＨＳＰ７０的表达。结果显示：ＨＳＰ７０在高度分化的肺鳞癌和肺腺癌细胞中的阳性表达率与癌旁正常肺组织之间具有高度显著性差异（Ｐ〈０．０１）,ＨＳＰ７０的表达在高分化的肺鳞癌与肺腺癌之间则无显著性差异（Ｐ〉０．０５）,在低分化的肺鳞癌和肺腺癌组织中,ＨＳＰ７０呈阴性反应,ＨＳＰ７０在肺癌组织中表达水平的高低与肺癌细胞的分化程度密切相关,而与肺癌的组织学类型     

一氧化氮吸入对缺氧性肺动脉高压患者一氧化氮合酶和内皮素的影响

探讨吸入一氧化氮（ＮＯ）对缺氧性肺动脉高压患者一氧化氮合酶（ＮＯＳ）和内皮素（ＥＴ）的影响。方法：１３例肺动脉高压患者行ＮＯ吸入，分别于吸入ＮＯ前、吸入３０ｍｉｎ时、停止吸入２ｈ和１２ｈ时采肺动脉血，测白细胞中的ＮＯＳ及血浆中的ＥＴ。结果：吸入ＮＯ前、吸入３０ｍｉｎ时、停止吸入２ｈ和１２ｈ，所测ＮＯＳ值分别为（０７０±０．２１）ｍｏｌ／ｍｉｎ·ｍｇ－１、（０７４±０１４）ｍｏｌ／ｍｉｎ·ｍｇ－１、（０６４±０２２）ｍｏｌ／ｍｉｎ·ｍｇ－１和（０６３±０１７）ｍｏｌ／ｍｉｎ·ｍｇ－１；所测ＥＴ为（７８８９±４６５９）ｐｍｏｌ／Ｌ、（８８２７±４５４１）ｐｍｏｌ／Ｌ、（８０７６±４２６６）ｐｍｏｌ／Ｌ和（６１０７±２９．４４）ｐｍｏｌ·Ｌ－１；后三者同吸入前比，均Ｐ＞００５。结论：缺氧性肺高压患者吸入ＮＯ对机体ＮＯＳ和ＥＴ未见明显影响     

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.