眼挫伤的眼底荧光血管造影临床分析

目的：观察眼挫伤后眼络膜、视网膜、视盘上眼底荧光血管造影检查（fundusfluorescein angiography FFA）中的特征和临床意义。方法：对38例眼挫伤患者进行眼底务管造影检查。结果：16眼视盘缺血性改变（g42．1％），视网膜震荡伤23眼（占60．5％），脉络膜破裂10眼（占26．30％），1例视神经撕脱伤。结论：FFA可显示眼挫伤后视盘、视网膜、脉络膜的循环改变，对眼损伤诊断、治疗提供依据。     

经瞳孔温热疗法治疗高度近视患者的老年性黄斑变性

目的评价瞳孔温热疗法(transpupillary thermotherapy,TT)治疗高度近视患者的老年性黄斑变性(age related maculardegeneration,MD)的临床疗效.方法使用810nm半导体激光治疗仪对13例14只眼高度近视患者的AMD进行TTT治疗.光斑2.0mm,能量150-225 mW;光斑3.0mm,能量200-325 mW,照射时间60S.治疗后随访时间3-18个月,平均10.4个月,通过视力、全视网膜镜检查及眼底荧光血管造影(fundus fluorescein angiography,FA)观察治疗效果.结果治疗后5只眼视力提高,占35.7%,只眼视力稳定,占57.1%,只眼视力下降,占7.1%.FFA检查显示TTT治疗后1个月6只眼渗漏停止,占42.9%;2只眼渗漏好转,占14.3%,只眼渗漏持续,占42.9%;对渗漏持续的6只眼经多次TTT治疗后,渗漏完全停止.再次行TTT治疗者6只眼,占42.9%.治疗随访期间无明显治疗副作用.结论TTT治疗能使大部分高度近视患者的AMD患眼视力稳定或提高,封闭CNV,使用安全,但激光治疗参数尚需进一步探索.     

激光诱导脉络膜新生血管模型的光学相干断层扫描检查

目的 探讨鉴定脉络膜新生血管(choroidal neovascularization CNV)模型的一种客观可靠的方法.方法 在间接检眼镜下用氩激光光凝有色家兔视网膜,分别于光凝后7、14、21、28天时行视网膜光学相干断层扫描(optical coherence tomography,OCT)和荧光血管造影(FFA),并做组织学检查.结果 光凝后7、14天时,OCT检查见光凝斑视网膜变薄,脉络膜反射被遮蔽,FFA未见荧光渗漏,光镜检查见视网膜神经层变薄.光凝21天后,OCT检查见光凝斑视网膜色素上皮(RPE)层和脉络膜毛细血管层反射光带增厚,光凝后21和28天时,FFA检查分别有55%和35%的光斑有点状荧光渗漏,光镜检查有脉络膜新生血管形成.结论 OCT检查与FFA及组织学检查结果相符合,OCT及FFA检查可作为鉴定是否有CNV形成的客观可靠的方法.     

护理干预对眼底血管荧光造影不良反应的影响

目的:探讨护理干预在预防眼底血管荧光造影(fundus fluorescein angiography FFA)不良反应中的作用。方法:通过对我院2005年2月至2011年2月共2 436例眼底病行FFA检查的患者,按时间段分为A组(未使用护理干预)与B组(使用护理干预),对比分析两组患者发生不良反应的临床表现及转归,以了解有效应对FFA不良反应的护理措施。结果:未应用护理干预前发生不良反应者占6.32%,经过检查前,检查中及检查后应用不同的护理干预后发生不良反应者占1.40%。结论:充分的护理干预对于减少或减轻FFA不良反应能起到良好作用。     

磁共振三维增强血管成像技术在腹部应用探讨

探讨腹主动脉三维增强磁共振血管成像（3D-CE MRA）方法和影响图像质量的因素;使用1.0T超导型MR扫描机,表面线圈、腰椎以及部分胸椎相控阵线圈。对48例病人进行腹主动脉3D-CE MRA增强扫描。检查时嘱咐患者屏气,于静脉内团注Gd-DTPA对比剂进行腹部动脉期相的扫描,用3D-FLASH序列采集图像;检查的病例96%获得了满意的图像,经M IP重建后,能够清楚显示腹部动脉正常的解剖结构和病变的部位、大小及其狭窄的程度。19例经数字减影血管造影（DSA）以及手术证实的病例中,3D-CE MRA显示腹部动脉的特异性和敏感性均为100%;高质量的腹部动脉MRA图像依赖于注药后扫描时机的准确性,注药流速与总量的合理性,合适的扫描序列,以及操作者的技巧和熟练程度。     

UBM检查与诊断虹膜睫状体囊肿临床观察

目的：应用超声生物显微镜（UBM）检查与诊断虹膜睫状体囊肿并进行临床观察.方法：应用超声生物显微镜对不明原因眼痛、眼胀或眼部不适及高眼压患者行UBM进行横向及纵向扫描,对发现的类圆形无回声区进行研究分析.结果：589例（1178只眼）患者中有26例（43只眼）出现虹膜睫状体囊肿,检出率为3.65%.其中单发性囊肿17例（28只眼）,在虹膜睫状体囊肿患者中占65.12%;多发性囊肿9例（15只眼）,在虹膜睫状体囊肿患者中占34.88%.结论：UBM在虹膜睫状体囊肿检查与诊断中独具优势,可为诊断治疗提供依据.     

眼底荧光血管造影1040例临床分析

对1040例眼底荧光血管造影检查进行总结分析，其中糖尿病视网膜病变最多，占总数的17．4％。造影后有35例纠正了造影前的错误诊断。对荧光血管造影前准备，并发症的处理等项进行了分析讨论。     

16层螺旋CT冠状动脉成像方法的初探

目的：初步研究探讨16层螺旋CT冠状动脉造影的成像方法。材料与方法：应用16层螺旋CT扫描机,采用对比剂团注示踪自动触发扫描技术,对临床疑诊冠心病的患者36例进行冠状动脉造影检查,在工作站进行图像后处理,探讨形成高质量冠脉图像的最佳成像方法。结果：36例共108支冠状动脉中,图像质量优者84支（77.7%）,良21支（19.4%）,差3支（2.9%）。结论：心率的快慢与稳定是影响图像质量的最主要的因素;各种后处理方法的综合运用能够清晰、直观、立体地显示冠状动脉。     

Fontaine Ⅱ期及以上分期下肢动脉硬化闭塞症的128层CTA技术探讨

目的分析128层CT的不同扫描技术在下肢CT血管造影技术(CTA)对下肢动脉硬化闭塞症(PAOD)FontaineⅡa期及以上分期中的应用价值,选出最具优势的检查手段。方法回顾性分析FontaineⅡa期及以上分期的PAOD患者共43例(患肢50侧)的下肢动脉血管CTA图像,并与数字减影血管造影(DSA)检查结果进行统计学分析,计算CTA对动脉狭窄50%病例的明确诊断。并按不同的CTA检查技术方法进行分组,分析其重组血管清晰度及显示血管节段数,进行组间结果对照分析。结果以下肢动脉管腔径狭窄50%为阈值,CTA检查的敏感性、特异性、准确性、阳性预测值、阴性预测值分别为100%、97.31%、98.10%、96.51%、100%。结论对于FontaineⅡa期及以上分期PAOD的血管狭窄度的判断,CTA具有高度敏感性及准确性,可为PAOD的临床治疗提供准确可靠的指导。对于FontaineⅡa期及以下分期的PAOD采用腘动脉团注触发技术扫描即可获得满意图像;而对于FontaineⅡb及以上分期的PAOD血管狭窄度的判断,采用经验值扫描可以获得更满意图像。     

中心性浆液性脉络膜视网膜病变FFA诊断特征与患者预后的相关性

目的:探究中心性浆液性脉络膜视网膜病变眼底荧光血管造影(FFA)诊断特征与患者预后相关性.方法:选择2014年7月~2015年6月我院收治的患者150例,收集患者的病史、一般情况并记录裸眼视力(或矫正视力),对入选患者进行FFA检测.记录患者眼底FFA的渗漏类型、渗漏点位置和渗漏面积等.治疗6个月后复查患者视力及眼底造影,统计并分析影响患者预后不良的危险因素,以及危险因素与患者预后不良的相关性.结果:治疗6个月后患者回访率88.00%.共81例89眼可评价为预后良好,51例56眼预后不良.患者年龄40岁、病程长、墨渍样渗漏或多病灶渗漏、渗漏点与黄斑中心凹距离近、渗漏面积大是影响患者预后不良的危险因素.Spearman法分析发现年龄与患者预后不良无显著线性关系(P0.05),而病程、渗漏类型、渗漏位置和渗漏面积与患者预后不良存在显著线性关系(P0.05).结论:中心性桨液性脉络膜视网膜病变患者预后不良是多因素共同作用的结果,FFA诊断特征对患者预后预测具有重要作用.其中渗漏类型、渗漏位置和渗漏面积与患者预后不良存在显著线性关系.     

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.     

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.     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-