猪同种异体胰腺移植物β细胞功能与受体猪对葡…

目的：复制出外科糖尿病模型，对其施行全胰十二指肠移植，观察移植功能和受体葡萄糖代谢。方法：健康杂种猪３头，行保留十二指肠全胰切除术复制出我科糖尿病模型，对比观察长期存活的５头胰腺移植加全胰切除的猪移植胰用葡萄糖代谢调节，观察术后血糖、胰岛素和Ｃ肽水平，并行静葡萄糖耐量试验。结果：３例单纯全胰腺切除的猪术后第１天血糖分别高达９．０、１１．５和１０．６ｍｍｏｌ／Ｌ。５例长期存活的肠道引流式胰腺移植猪术     

肠系膜上动脉综合征及其相关解剖的MDCTA研究

[目的]利用MDCTA研究正常人及肠系膜上动脉综合征患者肠系膜上动脉与腹主动脉夹角及距离的大小及其对十二指肠水平段的影响。[材料和方法]利用MDCTA,回顾性观察108例正常人和17例肠系膜上动脉综合征的患者肠系膜上动脉与腹主动脉夹角和十二指肠水平段水平肠系膜上动脉与腹主动脉间距,并进行对比。[结果]所有肠系膜上动脉综合征患者的MDCTA都展示了肠系膜上动脉与腹主动脉对十二指肠水平段的"钳压",引起十二指肠梗阻。108例正常人中,肠系膜上动脉与腹主动脉夹角为46.3°±16.5°,肠系膜上动脉综合征患者为14.3°±5.6°;正常人十二指肠水平段水平肠系膜上动脉与腹主动脉间距为14.7±4.4mm,肠系膜上动脉综合征患者为4.5±0.8mm,两组数据具有显著统计学差异。[结论]MDCTA可显示肠系膜上动脉综合征患者肠系膜上动脉与腹主动脉"钳压"十二指肠水平段引起十二指肠梗阻,又可准确显示肠系膜上动脉与腹主动脉夹角及距离的减小,对肠系膜上动脉综合征的诊断具有重要临床价值。     

尸体供肾延长右侧肾静脉的技术

据美国《外科学杂志》报导,美国阿喔瓦(Iowa)大学医学院移植中心,采用了整块器官切除和通过腹主动脉灌注肾脏的技术。这种技术避免了灌洗用的插管尖头对肾小动脉的任何损伤。此外,使随后的供者的一段(片)腹主动脉包含有数根肾动脉而吻合于受者髂外动脉末端,比逐个地吻合各个小动脉更为可取。     

移植肾动脉狭窄的支架治疗效果与安全性探讨

目的探讨移植肾动脉狭窄的支架治疗效果与安全性.方法1例肾移植术后的女性患者,2 a前采用移植肾动脉与髂内动脉远端行端-端吻合术,移植肾脏固定在右髂窝内.术后2 a发生移植肾动脉狭窄80%,狭窄性病变长度15 mm,接受了支架治疗.从左股动脉入路,应用Judkin 6F右冠指引导管,植入冠脉金属裸支架4.0 mm×18 ...     

腔内隔绝术治疗腹主动脉瘤一例

1　病例( 1)一般资料 :患者 ,男 ,53岁。既往有高血压病及频发性室性早搏多年 ,肺功能减退 ,术前 2个月因左肾结石并积脓行左肾切除 ,术后觉下腹部疼痛 ,超声检查示腹主动脉瘤并有附壁血栓形成。( 2 )影像学检查 :术前行螺旋ＣＴ及血管造影检查 ,见腹主动脉下段管腔呈囊状扩张 ,长度约 9ｃｍ ,最大宽径约 5 1ｃｍ× 4 8ｃｍ ,有中等量附壁血栓 ;其近缘距右肾动脉开口部 (颈部 )长度约 2ｃｍ ,内径约 2 4ｃｍ ,下缘直抵髂动脉分叉部 ,左髂总动脉瘤体与腹主动脉瘤体成角约 10 0°(图 1)。诊断为真性腹主动脉瘤累及双侧髂动脉。按腹主动脉瘤…     

大鼠心脏异位移植模型的建立

目的:为研究移植免疫建立大鼠心脏异位移植模型。方法:采用Ono's方法建立大鼠心脏异位移植模型,用大鼠的升主动脉和肺主动脉分别与大鼠的腹主动脉和下腔静脉作端侧吻合,同时使用两台单道心电图机描记受体双心和移植心脏的心电图。结果:从2001年11月到2003月1月共进行了248例大鼠心脏异位移植,其中179例手术供受体均用SD大鼠;69例手术供体为SD大鼠,受体为Wistar大鼠。开始的56例同种移植手术时间超过3h,受体均死亡;随后的82例同种移植手术时间在80～150min,受体存活13例,但移植心脏复跳的只有3例;最后手术时间缩短至45～65min时,手术成功率达到85%。同种移植心脏存活时间为(57±33)d,异种移植心脏存活天数(未使用免疫抑制剂治疗)为(7±1 53)d。结论:缩短手术时间是提高心脏移植成功率的关键。     

18例无黄疸型胰头、壶腹癌患者的临床诊治

目的 探讨无黄疸型胰头壶腹癌的诊治方法,方法 行胰、十二指肠切除术、Whipple重建术等。结果 术后28－38d愈合,未发生胰瘘。结论 及早发现无黄疸型胰头、壶腹癌患者对提高切除率和延长生存期具有重要意义。     

胰十二指肠切除术12例体会

目的:探讨胰十二指肠切除术并发症、预防和处理方法。方法:回顾性分析2000年至2003年间12例胰十二指肠切除术的治疗效果,对其手术方式进行总结评价。结果:胰头癌8例,壶腹周围癌14例,全部按Child术式重建消化道,无手术死亡,发生并发症2例(胰瘘和上消化道出血各1例)。结论:胰十二指肠切除术技术要求高,手术经验丰富和手术操作精细是减少并发症的关键因素。     

小鼠颈部异位心脏移植模型建立的改进

建立了易行、可靠的小鼠颈部异位心脏移植模型,探讨完善小鼠颈部异位心脏移植模型的建立和手术方式的改进.在显微镜下对受体手术,游离受体右侧静外静脉和颈总动脉.对供体,经下腔静脉注射肝素钠全身肝素化后,于低温下切取供心;采用供心无名动脉与受体颈总动脉端端间断吻合,供心肺动脉与受体颈外静脉端端吻合,进行小鼠颈部异位心脏移植.术后通过视诊和触诊检测供心心跳,病理学检查移植心排斥情况.共进行实验50例,其中同系移植25例,同种异基因移植25例.术后复跳率92%;7 d存活率90%,1例因术后失血过多于第1 d死亡,供心总缺血时间40 min.改进后的术式手术成功率高,术中暴露充分、血管处理简单、手术创伤小、污染机率小等,是简单、实用、可靠的手术方式.     

冻干辐照人脐动脉的制备及其物理性能的实验研究

为寻找理想的冠状血管移植物－同种异体小口径血管移植材料，１９９３年７月至１９９４年５月，自行制备采用并干辐照方法处理人脐动脉血管并进行物理性能的比较。结果表明，经冻干辐照处理之后，该脐动脉血管的物理性有改善，弹性和顺应性都明显提高，仍然保持良好的耐压能力，能够满足移植血管物理性能方面的要求，是一种较好的中小型血管移植物。     

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。     

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.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.