大叶胡枝子根皮提取物抗炎镇痛作用研究

目的探讨大叶胡枝子根皮提取物灌胃给药的抗炎镇痛作用。方法采用二甲苯致小鼠耳肿胀、蛋清致大鼠足跖肿胀2种急性炎症模型以及大鼠棉球肉芽肿慢性炎症模型,研究大叶胡枝子根皮提取物灌胃给药对急慢性炎症的作用。采用热板法和醋酸扭体法致痛,研究大叶胡枝子根皮提取物灌胃给药的镇痛作用。结果与模型组相比,大叶胡枝子根皮水提物和醇提物高、中、低剂量组显著抑制二甲苯所致小鼠耳肿胀(P 0.01),明显抑制蛋清所致大鼠足跖肿胀(P 0.01),明显抑制大鼠棉球肉芽肿(P 0.01)。大叶胡枝子根皮水提物和醇提物高、中、低剂量组给药后明显提高热板所致小鼠的痛阈值,与模型组和自身给药前比较差异显著(P 0.05、0.01);大叶胡枝子根皮水提物和醇提物高、中、低剂量组明显减少醋酸所致小鼠扭体反应次数,与模型组比较差异显著(P 0.05、0.01)。大叶胡枝子根皮水提物的抗炎镇痛作用强于醇提物(P 0.05、0.01)。结论大叶胡枝子根皮提取物灌胃给药具有一定抗炎、镇痛作用,且其水提物强于醇提物。     

铁苋菜抗炎镇痛有效部位的筛选

目的 筛选铁苋菜抗炎镇痛作用的有效部位,并初步探究其作用机制.方法 采用热板和醋酸扭体疼痛模型,考察铁苋菜镇痛作用的有效部位,采用二甲苯致小鼠耳肿胀、蛋清致大鼠足跖肿胀以及大鼠棉球肉芽肿炎症模型,考察铁苋菜抗炎作用的有效部位.结果 铁苋菜乙酸乙酯萃取部位明显延长热板所致小鼠痛阈值和明显减少醋酸所致小鼠扭体反应次数,与正...     

叶下花水煎剂抗炎镇痛作用的初探

目的初步探讨叶下花水煎剂的抗炎镇痛作用。方法采用二甲苯致小鼠耳肿胀炎症模型,观察叶下花水煎剂灌胃给药对急性炎症的作用。采用热板法和醋酸扭体法致痛,观察叶下花水煎剂灌胃给药的镇痛作用。结果与模型组相比,叶下花水煎剂高、中、低剂量(6.0、3.0、1.5 g生药/kg)组对二甲苯所致小鼠耳肿胀具显著抑制作用(P 0.01)。叶下花水煎剂高、中、低剂量(6.0、3.0、1.5 g生药/kg)组给药后明显延长热板所致小鼠的痛阈值,与模型组和自身给药前比较差异极显著(P 0.01);叶下花水煎剂高、中、低剂量(6.0、3.0、1.5 g生药/kg)组明显减少醋酸所致小鼠扭体反应次数,与模型组比较差异极显著(P 0.01)。结论叶下花水煎剂灌胃给药均具有抗炎、镇痛作用。     

陆英不同部位水提液抗炎镇痛作用的比较研究

目的比较陆英不同部位水提液的抗炎镇痛作用。方法采用二甲苯致小鼠耳肿胀炎症模型,研究陆英不同部位水提液灌胃给药对急性炎症的作用。采用热板法和醋酸扭体法致痛,研究陆英不同部位水提液灌胃给药的镇痛作用。结果与模型组相比,陆英根与茎叶水提液高、低剂量(10.0、5.0 g生药/kg)组显著抑制二甲苯所致小鼠耳肿胀(P0.01)。陆英根与茎叶水提液高、低剂量(10.0、5.0 g生药/kg)组给药后明显延长热板所致小鼠的痛阈值,与模型组和自身给药前比较差异极显著(P0.01);陆英根与茎叶水提液高、低剂量(10.0、5.0 g生药/kg)组明显减少醋酸所致小鼠扭体反应次数,与模型组比较差异极显著(P0.01)。陆英根水提液高、低剂量组给药后与相同剂量的茎叶水提液相比,差异显著(P0.05、P0.01)。结论陆英根与茎叶水提液灌胃给药均具有抗炎、镇痛作用,且根水提液抗炎镇痛作用强于茎叶水提液。     

爵床提取物抗炎镇痛作用的实验研究

目的探讨爵床提取物的抗炎镇痛作用。方法采用致炎剂二甲苯引起小鼠耳肿胀、新鲜蛋清引起大鼠足跖肿胀2种急性炎症模型以及棉球引起大鼠肉芽肿慢性炎症模型,研究爵床提取物灌胃给药对急慢性炎症的作用。采用热板法、醋酸扭体法和甲醛法致痛,研究爵床提取物灌胃给药的镇痛作用。结果与纯化水对照组相比,爵床醇提取物和水提取物高、低剂量组对致炎剂二甲苯所引起的小鼠耳廓肿胀抑制显著(P 0. 01,P 0. 05),对蛋清所引起的大鼠足跖肿胀抑制显著(P 0. 01),对大鼠棉球肉芽肿抑制显著(P 0. 01)。爵床醇提取物和水提取物高、低剂量组给药后对热板所引起的小鼠痛阈值明显提高,与纯化水对照组和自身给药前比较差异明显(P 0. 01,P 0. 05);爵床醇提取物和水提取物高、低剂量组对致痛剂醋酸所引起的小鼠扭体反应次数明显减少,也明显抑制甲醛所引起的早期(0～5 min)和晚期(15～30 min)小鼠足痛反应,与纯化水对照组比较差异显著(P 0. 01)。爵床醇提取物的抗炎镇痛作用比水提取物强(P 0. 01,P 0. 05)。结论爵床提取物灌胃给药具有一定抗炎、镇痛作用,且醇提取物强于水提取物。     

蒙药玉簪清咽十五味丸抗炎镇痛作用的实验研究

目的：探索蒙药玉簪清咽十五味丸的抗炎镇痛作用,为进一步推广临床应用提供依据.方法：采用热板法、醋酸扭体法观察玉簪清咽十五味丸的镇痛作用;采用小鼠耳肿胀法、角叉菜胶致大鼠足肿胀法观察玉簪清咽十五味丸的抗炎作用.结果：不同剂量的玉簪清咽十五味丸能明显提高小鼠热板痛阈值;对二甲苯致小鼠耳肿胀和角叉菜胶所致大鼠足趾肿胀均有明显的抑制作用.结论：玉簪清咽十五味丸具有显著的镇痛抗炎药理作用.     

广西壮药血党抗炎镇痛活性研究

为探究广西壮药血党(Ardisiae brevicaulis herba)的抗炎镇痛活性,本文采用二甲苯致小鼠耳廓炎症肿胀实验、小鼠棉球炎性肉芽肿实验、热板法致小鼠疼痛实验、醋酸致小鼠疼痛扭体反应实验进行研究。结果显示,壮药血党能明显降低二甲苯致小鼠耳廓炎症肿胀度,降低小鼠棉球炎性肉芽肿质量,提高小鼠热板痛阈值,减少醋酸致小鼠疼痛扭体反应次数,表明壮药血党具有明显的抗炎镇痛活性。     

散花紫金牛抗炎镇痛作用的实验研究

目的:研究散花紫金牛对小鼠的抗炎、镇痛作用.方法:用二甲苯致小鼠耳肿胀法和小鼠棉球肉芽肿的方法来研究散花紫金牛的抗炎作用;采用小鼠热板法和醋酸致小鼠扭体法试验来研究散花紫金牛的镇痛作用.结果:散花紫金牛能减轻耳廓肿胀度,降低肉芽肿棉球块重量;提高小鼠的痛阈值,减少小鼠扭体次数;明显抑制了二甲苯所致小鼠急性耳廓肿、小鼠棉球肉芽肿及热板、冰醋酸所致小鼠疼痛.结论:散花紫金牛对小鼠具有明显的抗炎和镇痛作用.     

喙尾琵琶甲流浸膏的镇痛及抗炎作用研究

目的:观察喙尾琵琶甲流浸膏对小鼠的镇痛及抗炎作用。方法:用热板法和醋酸扭体法测定小鼠的痛阈值,二甲苯耳肿胀法测定抗炎作用。结果:喙尾琵琶甲流浸膏高、低剂量组均能提高扭体小鼠痛阈值,高剂量组能显著提高热板实验小鼠痛阈值;喙尾琵琶甲抗炎作用不明显。结论:喙尾琵琶甲流浸膏具有明显的镇痛作用,抗炎作用不明显。     

复方中药金铃子散及其单味药镇痛抗炎作用的比较

为观察金铃子散及其各单味药对小鼠镇痛抗炎作用的影响,通过热板法、醋酸扭体法和角叉菜胶致炎法,研究了金铃子散及其单味药的镇痛抗炎作用效果。结果表明:金铃子散复方及其单味药水煎液可使热板法小鼠在给药后30 min、60 min、90 min及120 min痛阈值明显延长,醋酸所致小鼠扭体次数明显减少(p0.05,p0.01),角叉菜胶所致大鼠足肿胀率明显降低(p0.05,p0.01),其中金铃子散作用效果最为明显。可见金铃子散具有明显的镇痛抗炎作用,且镇痛抗炎效果优于单味药。     

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.     

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.     

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.     

A computer generator for randomly layered structures

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

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the