杨柳：江南区域文化的典型象征

从先秦到汉唐,杨柳在北方的分布十分普遍,其文化表现也以北方为主.中晚唐以来,杨柳意象则明显南方化,逐步成为江南风景和文化的典型象征.这一历史转变与北方地区生态环境的整体衰退,社会经济、文化重心的南北转移,杨柳自身的品种结构变化密切相关.作为江南意象的杨柳,包含着物华饶美、水乡清柔、风俗奢乐等多重象征意蕴.     

人脑挫伤后神经丝蛋白NF200表达的变化

目的研究人脑挫伤后NF200在脑组织中神经元及轴索中表达的变化。方法88例闭合性脑挫伤标本,按损伤时间分为0.5h、1h、3h、24h、3d、7d、14d和30d共8个实验组,另以6例非脑挫伤的脑作为对照组,应用NF200免疫组织化学染色,结合图像分析技术,观察伤后不同时间NF200的变化。结果脑挫伤后0.5h和1h组,挫伤灶内及边缘NF200免疫组化染色几乎阴性;随时间的延长,挫伤灶内残存神经元及其周围神经元NF200染色逐渐增强,甚至发生核内转移;挫伤灶周围轴索在伤后出现波浪状扭曲、肿胀和断裂,最早在24h组出现收缩球(retractionball,RB),7d组轴索病变最明显,可见大量RB。图像分析发现伤后0.5h组和1h组,脑挫伤部位NF200阳性细胞的平均光密度(AOD)下降,其后逐渐升高,在14d组或30d组达高峰。结论脑损伤后NF200变化有一定规律性,并可用于诊断轴索损伤(AI),免疫组织化学结合结合图像分析技术在推断脑损伤时间上的有一定参考价值。     

荧光标记复合扩增检测4个STR基因座多态性

目的建立荧光标记复合扩增D1S2142,D13S1492,D14S306,D15S659基因座检测分型方法,并对成都汉族群体4个基因座的遗传多态性进行调查。方法用6-FAM标记D1S2142和D15S659引物,HEX、TMR分别标记D14S306和D13S1492引物,PCR复合扩增,310基因分析仪电泳自动收集电泳结果数据,GeneScan Analysis Software3.7NT软件计算扩增产物片段相对大小,Genotyper(3.7NT软件进行样本基因型分型,建立了荧光标记复合扩增检测4个STR基因座基因型的方法,对145名成都汉族无关个体样本进行分型。结果荧光标记复合扩增D1S2142,D13S1492,D14S306,D15S659基因座,每个STR基因座都获得了清晰的基因型分型结果。145份样本,4个STR基因座分别检出10,14,7,12个等位基因和22,54,21,39种基因型,其基因型分布均符合Hardy-W e inberg平衡。4个基因座在成都汉族群体的杂合度分别依次为0.7793,0.8345,0.7793和0.8345;多态信息含量分别依次为:0.7656,0.8730,0.7470和0.8312。累计非父排除率为0.9783,累计个人识别机率为0.9999 917。结论荧光标记复合扩增D1S2142,D13S1492,D14S306,D15S659基因座,可实现对每个基因座准确分型;成都汉族群体该4个基因座的遗传学数据,可为群体遗传学和法医学研究与应用提供基础资料。     

高效液相色谱-质谱法测定人尿液中乙基葡萄糖醛酸苷

目的建立高效液相色谱-质谱法测定人尿液中乙基葡萄糖醛酸苷。方法取空白人尿液加入EtG-D5内标工作液和冷甲醇（4℃）,经涡旋、离心,取上清液于水浴氮气吹干,以沉淀杂质,采用Agilent Zorbax Bonus-RP色谱柱分离,以乙腈∶0.1%甲酸水溶液（5∶95）为流动相,采用负离子模式质谱检测,在选择离子监测模式下进行定性和定量测定。结果尿液中EtG在50～5 000ng/mL范围内线性关系良好,检出限为18ng/mL,方法回收率为90.2%～101.7%,相对标准偏差小于10%。结论所建方法简便,具有较高的回收率和精密度,适用于尿液中EtG的检测。     

朱德对陕甘宁边区经济建设的贡献

为解决陕甘宁边区财政经济严重困难,朱德提出了独立自主发展边区经济的新方略,指导发展边区工业,首倡＂军垦屯田＂政策并领导开发南泥湾,对边区经济建设和革命胜利作出了独特而重要的贡献。     

Y chromosome J2 subtyping in an Italian sample: Population and forensic implications

In the recent years the Y chromosome genealogy has been refined by a number of newly discovered SNPs. The non-random distribution of the Y chromosome lineages worldwide makes fundamental the dissection and characterisation of haplogroups associated with specific geographic areas. In Southern Europe the haplogroup J2, as defined by the M172 marker, can reach frequencies up to 35%, making the dissection of such lineage critical for population studies. Here we present a study on J2 chromosomes from the Italian peninsula. Populations and forensic implications are discussed. A total of 900 individuals were previously genotyped for a number of SNPs, including M172. More than 200 of these have been now genotyped for 7 SNPs within the J2 lineage using a multiplex SNaPshot approach. The different distribution of the various lineages in different geographic areas probably reflects different historical demographic events and points to differential Y chromosome haplotype distribution, with implication for forensic application of this genetic marker.     

Interrogation of short tandem repeats using fluorescent probes and melting curve analysis: A step towards rapid DNA identity screening

Current forensic DNA profiling methods rely on the analysis of samples at specialised laboratories with an average turnaround time of several days. The ability to rapidly determine a partial profile of short tandem repeats at the point-of-arrest would be of great benefit to police forces around the world, for example enabling a suspect to be rapidly included or excluded from an investigation. We have developed a homogeneous PCR method for the interrogation of STR loci utilising fluorescent oligonucleotide probes and melting curve analysis. Alleles of the D18S51, TH01 and D8S1179 loci were differentiated and identified on the basis of target length and probe melting temperature. Assay performance was evaluated by comparing melting peak data with the AmpFlSTR^® SGM Plus^® system. The method is compatible with direct analysis of unpurified buccal swab samples, enabling a partial STR profile to be generated within 1 h.     

论西部少数民族权益的法治保障

西部少数民族权益法治保障具有理论依据、宪政依据和现实依据。因此，必须加强法治建设，保障西部少数民族权益。     

基于百分等级模型的物流企业能力要素分析

以物流企业为研究对象，从顾客需求的角度，构建企业能力要素体系。利用百分等级模型思想，来对企业能力要素进行定量评价，以期形象的为物流企业明确本企业在行业内的地位起到作用，为此能够持续的利用此模型思想为企业提供决策依据。