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随着中国经济进入新常态,城镇化和产业化的新形势将使城市轨道交通进入差异化发展阶段.从需求和能力两个角度,分析人口、财税、土地、金融等因素对城市轨道交通的影响,认为城镇人口增长、城市产业发展和政府财政能力将决定未来发展形势,中心城市及主要城市群将是主要市场,不同类型城市需求将有所差异,未来轨道交通制式将走向多元化以适应不... 相似文献
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Jiang-fang Lian Chen Huang Xiao-yan Huang Ying Wang Shi-jun Ge Jian-qing Zhou 《西安交通大学学报(英文版)》2009,21(4):222-224,229
Objective To diagnose 6 LQTS families by genetic analysis. Methods A total aof 6 LQTS pedigrees with 43 family members were brought together for genetic diagnosis by using short-sequence tandem-repeat (SIR) markers or sequencing. Genomic DNA was extracted from blood samples by standard procedure. STR markers or KCNQ1, KCNH2 and SCN5A were amplified. The haplotype analysis for LQTS was performed. If the family got the negative haplotype analysis, the sequencing was performed. Results LQTS patients were always linkaged with the SCNSA gene in family 1. KCNH2 was linkaged with the disease in family 2 to 5.21 gene carriers were identified from these 5 families. A mutation (A561V-KCNH2) was only found in the proband of family 6 and an SNP (G1691A) was found in all the members of the family. Conclusion Genetic diagnosis can not only improve presymptomatic diagnosis,bnt also provide the basis for personal therapy and research on disease-causing mutations. 相似文献
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本文主要介绍硅粉的一些特殊性能,阐述其在混凝土中的工作原理、配合比设计以及对混凝土结构各项性能指标的大幅度提高,同时结合相应的工程实践论述硅粉混凝土的应用历史及现实意义. 相似文献
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成像雷达广泛应用到各个领域.通过对成像雷达在港口交通管理系统中的可行性,以及整个系统的功能、组成的应用分析.探讨了成像雷达的优势,系统的设计与实现. 相似文献
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为了提高出租汽车公司的效益,减少城市路面交通量,降低空气污染,通过运用自适应过滤法对出租汽车保有量进行较为准确的预测,其结果可为出租汽车合理规模的确定与管理决策的制定提供科学依据。 相似文献
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