基于室内物理模型试验和原位锚固试验,对基于高模数硅酸钾溶液-（粉煤灰＋粉土）（PS-（F＋C））浆液的木锚杆锚固系统在夯土介质中进行了拉拔测试与杆体-浆体界面应变监测,研究了该锚固系统的锚固性能与破坏模式、杆体-浆体界面剪应力...基于室内物理模型试验和原位锚固试验,对基于高模数硅酸钾溶液-（粉煤灰＋粉土）（PS-（F＋C））浆液的木锚杆锚固系统在夯土介质中进行了拉拔测试与杆体-浆体界面应变监测,研究了该锚固系统的锚固性能与破坏模式、杆体-浆体界面剪应力分布与传递特征。结果表明：该锚固系统室内试验极限锚固力（24～38 k N）远大于现场试验值（2.5～8 k N）;锚固系统具有低弹性强塑性特征,表现出极强的延性;在荷载进程中杆体-浆体界面的应力分布与传递特征具有多峰值分布、高值往往出现在锚固末端、压应力出现等特征,表明该锚固系统兼有拉力型和压力型全长黏结性锚固系统的特点;该系统适合于夯筑土遗址锚固,与遗址具有良好的物理力学兼容性。展开更多
bZIP transcription factor family is one of the largest groups of the plant transcription factor families and plays an important role in plant growth and adaption to the abiotic stresses. In this study, two AtbZIP1 mut...bZIP transcription factor family is one of the largest groups of the plant transcription factor families and plays an important role in plant growth and adaption to the abiotic stresses. In this study, two AtbZIP1 mutant Arabidopsis （bzipl） were used with T-DNA inserted into two different sites, designated as SALK-556773 and SALK-660942, in order to identify different effects on AtbZIP1 gene expression by different T-DNA insertion sites. PCR and RT-PCR results revealed that T-DNA insertion in CDS region could effectively inhibit AtbZIP1 gene expression, while T-DNA insertion in 3＇-UTR couldn＇t. The phenotype analysis further confirmed the differences and showed that T-DNA insertion in CDS region decreased plants＇ drought resistance, while in 3＇-UTR couldn＇t. The phenotype assays also suggested that AtbZIP1 held pivotal roles in plant response to drought stress.展开更多
文摘基于室内物理模型试验和原位锚固试验,对基于高模数硅酸钾溶液-（粉煤灰＋粉土）（PS-（F＋C））浆液的木锚杆锚固系统在夯土介质中进行了拉拔测试与杆体-浆体界面应变监测,研究了该锚固系统的锚固性能与破坏模式、杆体-浆体界面剪应力分布与传递特征。结果表明：该锚固系统室内试验极限锚固力（24～38 k N）远大于现场试验值（2.5～8 k N）;锚固系统具有低弹性强塑性特征,表现出极强的延性;在荷载进程中杆体-浆体界面的应力分布与传递特征具有多峰值分布、高值往往出现在锚固末端、压应力出现等特征,表明该锚固系统兼有拉力型和压力型全长黏结性锚固系统的特点;该系统适合于夯筑土遗址锚固,与遗址具有良好的物理力学兼容性。
基金Supported by National Natural Science Foundation of China (30570990)National Major Project for Cultivation of Transgenic Crops (20082x08004)+1 种基金Key Research Plan of Heilongjiang Province (GA06B103)Innovation Research Group of NEAU (CXT004)
文摘bZIP transcription factor family is one of the largest groups of the plant transcription factor families and plays an important role in plant growth and adaption to the abiotic stresses. In this study, two AtbZIP1 mutant Arabidopsis （bzipl） were used with T-DNA inserted into two different sites, designated as SALK-556773 and SALK-660942, in order to identify different effects on AtbZIP1 gene expression by different T-DNA insertion sites. PCR and RT-PCR results revealed that T-DNA insertion in CDS region could effectively inhibit AtbZIP1 gene expression, while T-DNA insertion in 3＇-UTR couldn＇t. The phenotype analysis further confirmed the differences and showed that T-DNA insertion in CDS region decreased plants＇ drought resistance, while in 3＇-UTR couldn＇t. The phenotype assays also suggested that AtbZIP1 held pivotal roles in plant response to drought stress.
