乌索酸与齐墩果酸对小鼠实验性肝损伤保护作用的比较

为了研究乌索酸的保肝作用及其特色，分别建立四氯化碳(CCl4)、D-氨基半乳糖胺(D—GaIN)、卡介苗加脂多糖(BCG—LPS)及异硫氰酸-1-萘酯(ANT)诱导小鼠肝脏损伤模型，以测定血清谷丙氨酸转换酶(ALT)、谷草氨基酸转换酶(AST)、总胆红素(113)和肝组织丙二醛(MDA)含量为指标，观察乌索酸对肝脏损伤的保护作用，并与抗肝炎药物齐墩果酸进行比较，结果表明：30mg／kg乌索酸均能显著降低CCl4、D—GalN、BCG—LPS、ANIT致肝损伤小鼠血清ALT和肝MDA值，而30mg,／kg齐墩果酸对CCl4、BCG—LPS肝损伤小鼠降ALT效果不及乌索酸；30mg／kg乌索酸能非常显著地降低ANIT致肝损伤小鼠血清TBLL含量，而30mg／kg齐墩果酸与联苯双酯降血清TB作用不明显，提示：乌索酸具有明显的降酶、退黄保肝作用。     

虎杖总蒽醌提取物一般药理学实验研究

为了解虎杖总葸醌提取物的一般药理作用,通过动物试验观察了虎杖总蒽醌提取物对动物心血管系统、呼吸系统及神经系统的影响.结果表明,灌胃给药(100,200,400 mg/kg),虎杖总蒽醌提取物对小鼠自主活动无明显影响(P>O.05),而对小鼠阈下剂量戊巴比妥钠催眠具有协同作用(P0.05).     

牛蒡根总黄酮对高尿酸血症小鼠的影响

文中主要研究牛蒡根总黄酮对高尿酸血症小鼠的预防作用,通过检测血清尿酸(UA)、肌酐(CREA)及尿素(UR)水平以及肾脏组织功能的观察。使用酵母浸膏和氧嗪酸钾盐法联合建立高尿酸血症(HUA)小鼠模型,将昆明种,6周龄,72只雄性小鼠采用随机染色用毛笔将苦味酸(染成黄色)涂在小鼠的的不同部位分别标记为6组,每组12只,空白组、模型组、总黄酮高剂量组(560 mg/kg)、总黄酮中剂量组(280 mg/kg)、总黄酮低剂量组(140 mg/kg)、别嘌醇片剂阳性对照组(50mg/kg)。测定并分析小鼠的血清肌酐(CREA)、尿素(UR)、尿酸(UA)含量,并对小鼠肾脏进行病理学检查。与模型组比,别嘌醇阳性组和总黄酮高剂量组可降低小鼠CREA,UR,UA水平(P 0. 05)。与模型组相比别嘌醇和高剂量组小鼠的体质量均增加,而中剂量和低剂量组均无明显差异(P 0. 05)。结果显示,总黄酮高剂量组肾脏病变程度轻于模型组。对酵母浸膏和氧嗪酸钾盐联合诱导小鼠HUA模型中,总黄酮高剂量组可以降低血清UA水平,降低CR和UR水平。牛蒡根总黄酮对HUA小鼠肾脏有保护作用。     

富金花茯散茶对高尿酸血症小鼠的影响

研究富金花茯散茶对氧嗪酸钾致高尿酸血症小鼠的尿酸代谢与相关酶活性的影响．将60只雄性KM种小鼠随机分为空白组、模型组、阳性药组（别嘌呤醇）、茯茶低剂量组（125mg／kg）、茯茶中剂量组（250mg／kg）、茯茶高剂量组（500mg／kg）．连续灌胃7d后腹腔注射氧嗪酸钾（300mg／kg）造模,空白组注射等量蒸馏水．采样后测定小鼠血尿酸（UA）、肝脏黄嘌呤氧化酶（XOD）、腺苷脱氨酶（ADA）活性造模后,茯茶高剂量组血尿酸浓度较对照组降低35．2％（P〈0．05）,肝脏XOD及ADA活性抑制率显著,XOD活性降低38％（P〈0．05）,ADA活性降低53．8％（P〈0．05）．富金花茯散茶对氧嗪酸钾导致的高尿酸血症有明显的改善作用,其作用机制与其抑制肝脏XOD、ADA活性有关．     

反相高效液相色谱法测定治咳枇杷露中乌索酸的含量

建立了反相高效液相色谱法测定枇杷露中乌索酸的含量,同时采用光电二极管阵列检测器检测乌索酸色谱峰的纯度。色谱柱为Nova-Pak C18(3.9×150 mm,4μm),流动相为甲醇-水(88∶12),流速1.0 mL/m in,检测波长210 nm,柱温25℃。乌索酸在0.039 5~0.237μg范围内线性关系良好(r=0.999 1),检出限为0.2 mg/L(3σ),平均回收率为98.7%。该法适于对含有乌索酸的药物进行质量评价。     

乌索酸滴丸剂的制备工艺及其质量评价

采用滴制法制备乌索酸滴丸,以滴丸的圆整度、质量差异及硬度等作为综合评定指标,优选出滴丸的最佳工艺为乌索酸与基质配比为1∶5,滴制温度为90℃,滴距为10 cm,冷凝剂的温度为15℃.同时采用RP-HPLC法测定滴丸中乌索酸含量为(5±6.1%)mg,乌索酸滴丸的体外溶出度75 min内比片剂提高232.8%,比乌索酸胶囊提高12.5%.     

重组人尿激酶的一般药理学研究

试验结果显示：尿激酶原（prouk)22．5万IU／kg、45．0万IU／kg和90．0万IU／kg3个组、赋形剂组和生理盐水组动物尾静脉注射给药,对小鼠一般行为活动表现和自发活动次数均无明显影响。prouk22．5万IU／kg、45．0万IU／kg和90．0万IU／kg三个组、赋形剂组和生理盐水组动物尾静脉注射给药,对大鼠一般行为活动表现均无明显影响,均能在旋转棒上协调平衡运动。此外,给药后20min,三个剂量组大鼠凝血时间虽有延长,但与生理盐水组或赋形剂组比较无显著性差异（P＞0．05）。prouk11．25万IU/kg、22．50万IU／kg、45．00万IU／kg三组静脉滴注给药,麻醉犬的ECG、HR、呼吸均无明显改变,与赋形剂组比较性差异。但prouk高剂量组动物的SAP、DAP、MAP在给药10－15min时短暂下降,这些反应在给药30min后均恢复正常。结果表明,prouk在受度剂量范围内对小鼠、大鼠精神神经活动和大鼠的凝血时间等均无明显影响,在45．00万IU/kg剂量时对麻醉犬有短暂的降低血压的作用。     

盐酸柯诺拉赞的安全药理学研究

为了探讨盐酸柯诺拉赞对SD大鼠中枢神经系统和Beagle犬心血管及呼吸系统的用药安全性,对大鼠单次灌胃给予超纯水,盐酸柯诺拉赞20、60、200 mg/kg和盐酸氯丙嗪20 mg/kg,进行功能观察组合试验,观察一般体征、行为方面、神经方面、自主体征等指标。犬单次经十二指肠给予超纯水,盐酸柯诺拉赞1、3、10 mg/kg,观察麻醉犬的心率、血压及呼吸等指标。结果表明:除200 mg/kg剂量外,其余剂量的盐酸柯诺拉赞对动物的神经系统、心血管系统及呼吸系统均无影响。在上述剂量下的盐酸柯诺拉赞药物安全性较好,具有良好临床应用前景。     

海人酸致沙鼠癫痫模型初探

采用腹腔注射海人酸(KA)的方法制作沙鼠癫痫模型。结果显示,实验中所设的四个剂量组(5 mg/kg,10mg/kg,15 mg/kg,20 mg/kg)均能成功诱发癫痫发作,是良好的颞叶癫痫动物模型。随着KA剂量的增加,沙鼠癫痫发作的潜伏期、发作时间均明显缩短(P<0.01),但动物的死亡率增加(P<0.01)。提示制作沙鼠癫痫模型时腹腔注射KA的适宜剂量是5 mg/kg。     

小鼠同种异基因皮肤移植模型的建立

目的：为移植免疫及药物免疫机理研究建立小鼠同种异基因皮肤移植动物模型。方法：受体BALB/c分为A～E共5组,即对照组,5．0、7．5、10、20mg／kg环孢菌素A(CsA)剂量组,通过背-背法进行C57BL／6的全厚皮皮片移植,以探求通过较小剂量CsA及优化实验条件和护理方式建立供免疫机理研究的动物试验平台。结果：5．0、7．5、10mg/kg组相对于对照组皮片排斥时间无明显差别,而20mg/kg组植皮能较长时间存活。结论：20mg／kg的CsA剂量可以经济,快速地建立小鼠同种异基因移植动物模型。     

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。     

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.     

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.