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Significant variations of trace gas composition and aerosol properties at Mt. Cimone during air mass transport from North Africa – contributions from wildfire emissions and mineral dust
trace gas composition North Africa wildfire emissions mineral dust
2009/7/22
High levels of trace gas (O3 and CO) and aerosol (BC, fine and coarse particle volumes), as well as high scattering coefficient (σp) values, were recorded at the regional GAW-WMO station of Mt. Cimone...
The formation mechanisms and regional characteristics of spring water temperature on the northern foot of Mt. Asama
Mt. Asama Spring water temperature Volcanic activity Wind-hole circulation Groundwater flow system
2009/7/14
It can be recognized that water temperature of springs distributed on the northern foot of Mt. Asama has remarkable regional variations. The purposes of this study are to discuss the various formation...
Simulation of the climate impact of Mt. Pinatubo eruption using ECHAM5 – Part 2: Sensitivity to the phase of the QBO and ENSO
Mt. Pinatubo eruption ECHAM5 QBO ENSO
2009/5/15
The sensitivity of the climate impact of Mt. Pinatubo eruption in the tropics and extratropics to different QBO phases is investigated. Mt. Pinatubo erupted in June 1991 during the easterly phase of t...
在已有研究成果的基础上,为了适应物性参数剧烈变化的复杂模型并满足联合反演的要求,开发了速度和电阻率随机分布共网格单元模型的建模技术.基于这种统一的物性随机分布的网格介质模型,利用有限元方法和改进的射线追踪法分别正演计算大地电磁场和地震走时,结合改进的模拟退火算法,研究实现了电阻率和速度随机分布条件下的大地电磁与地震资料的同步联合反演.对物性界面不完全一致和物性变化剧烈的带地形复杂模型的试验,表明了...
位于大巴山腹地的镇巴地区受高陡山地及复杂地下地质构造的影响，油气勘探程度低、勘探效果差。本文通过电极距、布极方式、电极组合、坡度对MT资料的影响等参数试验资料的分析研究，探讨了适合该区地形特点的MT采集方法及生产因素。结合二维正演模型的研究，对山区复杂地表类型的MT曲线的变化特征、表层不均匀体影响、地形起伏影响及地质构造干扰引起的“超相位”现象的原因进行了分析探讨；强调MT数据预处理及物性分析工作...
在已有研究成果的基础上,为了适应物性参数剧烈变化的复杂模型并满足联合反演的要求,开发了速度和电阻率随机分布共网格单元模型的建模技术.基于这种统一的物性随机分布的网格介质模型,利用有限元方法和改进的射线追踪法分别正演计算大地电磁场和地震走时,结合改进的模拟退火算法,研究实现了电阻率和速度随机分布条件下的大地电磁与地震资料的同步联合反演.对物性界面不完全一致和物性变化剧烈的带地形复杂模型的试验,表明了...
转金属硫蛋白(MT)基因植物具有清除重金属污染的能力，但是金属离子在植物体内的分布研究较少。文章以多代培育纯合的转MT烟草为材料，研究了转MT基因烟草积累铅和锌以及铅和锌在不同器官的分布情况。结果表明转基因植株的老叶、茎部和根部铅和锌积累量显著高于普通烟草植株，整株的铅和锌含量分别提高了21.8%和27.2%。铅和锌在植物体内的分布也发生了变化，转基因植株老叶和根中的铅含量分别高出普通烟草同位置的...
Simulation of the climate impact of Mt. Pinatubo eruption using ECHAM5 – Part 1: Sensitivity to the modes of atmospheric circulation and boundary conditions
climate impact Mt. Pinatubo eruption ECHAM5 atmospheric circulation boundary conditions
2009/3/12
The eruption of Mt. Pinatubo in the Philippines in June 1991 was one of the strongest volcanic eruptions in the 20th century and this well observed eruption can serve as an important case study to und...
Interannual variability of long-range transport as seen at the Mt. Bachelor observatory
Interannual variability long-range transport Mt. Bachelor observatory
2009/3/12
Interannual variations in background tropospheric trace gases (such as carbon monoxide, CO) are largely driven by variations in emissions (especially wildfires) and transport pathways. Understanding t...
Ozone production and trace gas correlations during the June 2000 MINATROC intensive easurement campaign at Mt. Cimone
Ozone production trace gas correlations MINATROC intensive easurement campaign Mt. Cimone
2009/3/10
An intensive measurement campaign was performed in June 2000 at the Mt. Cimone station (44°11' N-10°42' E, 2165 m asl, the highest mountain in the northern Italian Apennines) to study photochemical oz...
Identification of glacier motion and potentially dangerous glacial lakes in the Mt. Everest region/Nepal using spaceborne imagery
glacier motion potentially dangerous glacial lakes spaceborne imagery
2010/1/4
Failures of glacial lake dams can cause outburst floods and represents a serious hazard. The potential danger of outburst floods depends on various factors like the lake's area and volume, glacier cha...
Representativeness and climatology of carbon monoxide and ozone at the global GAW station Mt. Kenya in equatorial Africa
climatology carbon monoxide ozone equatorial Africa
2008/11/11
The tropics strongly influence the global atmospheric chemistry budget. However, continuous in-situ observations of trace gases are rare especially in equatorial Africa. The WMO Global Atmosphere Watc...
利用GMS-06电磁观测系统对上海奉城—浙江湖州剖面进行了大地电磁数据采集，获得了超过4000 s的高质量长周期观测数据，为沪浙地区深部电性结构研究提供了有利条件.通过反演处理，综合倾子解释结果和重磁资料以及最新的地震解释结果，在电性和断裂结构上获得了新的认识，对湖州—苏州、乌镇—马金、枫泾—川沙以及太仓—奉贤这几条深大断裂带的展布以及对区域构造格架的控制作用进行了新的评价，其中枫泾—川沙断裂是上...
如何得到快速稳定的反演结果和更清晰的地质体分界面等问题仍然是当前MT反演研究的一个重点.为了解决反演结果不能得到清晰的电性分界面的问题,本文在前人研究的基础上,基于OCCAM反演以及突出尖锐边界反演的思想,结合最小支撑梯度泛函,构建了新的反演目标函数,并利用共轭梯度法优化目标函数,实现了一种光滑模型与尖锐边界结合的MT二维反演方法.模型实验证明了该方法的准确性,通过与已发表的相关反演方法的结果进行...
小鼠胚胎干细胞中MT-Ⅱ基因的定位改变
定位整合 MT-Ⅱ基因
2008/1/29
摘要构建了小鼠MT-Ⅱ基因的定位整合载体pMT-Ⅱ6.7，这是一个置换型载体，它包含了6.7kb的与MT-Ⅱ基因及其旁侧列同源的序列。用电穿孔方法将这一载体转化入小鼠ES细胞Mespu 22中，在G418R、GancR的双抗性克隆中，用PCR方法进行筛选，从104个克隆中获得26个阳性克隆；对这26个克隆进行核型分析表明，其中有2个克隆，即克隆5-2和8-4的核型(2n=40,XY)正常率很高，达...