排序方式： 共有10条查询结果，搜索用时 187 毫秒
1
1.
使用中国新一代多普勒天气雷达cINRAD系统的底图资料,分析了其二进制文件的数据存取格式,设计了精细化地图数据编辑应用软件.此软件通过增加热点区域的地理信息,在预报中可准确定位雷达回波强度的地理位置,为相关政府部门提供精细化的气象预报服务产品. 相似文献
2.
采用涪陵逐日极端最高、最低气温资料,对涪陵的高温闷热天气进行了深入系统的研究,揭示了涪陵高温闷热天气的发生、分布和时空变化特征.结果表明高温日数、极端最高、最低气温的线性趋势均为下降趋势,而闷热天气的线性趋势呈上升趋势.高温、闷热天气以及极端最高、最低气温之间有着不同的多尺度时间变化特征,且后者较前者复杂. 相似文献
3.
4.
Magnetospirillum magneticum strain AMB-1 belongs to the family of magnetotactic bacteria. It possesses a magnetosome chain aligning, with the assistance of cytoskeleton filaments MamK, along the long axis of the spiral cells. Most fresh M. magneticum AMB-1 cells exhibit spiral morphology. In addition, other cell shapes such as curved and spherical were also observed in this organism. Interestingly, the spherical cell shape increased steadily with prolonged incubation time. As the actin-like cytoskeleton protein MreB is involved in maintenance of cell shapes in rod-shaped bacteria such as Escherichia coli and Bacillus subtilis, the correlation between MreB protein levels and cell shape was investigated in this study. Immunoblotting analysis showed that the quantity of MreB decreased when the cell shape changed along with incubation time. As an internal control, the quantity of MamA was not obviously changed under the same conditions. Cell shape directs cell-wall synthesis during growth and division. MreB is required for maintaining the cell shape. Thus, MreB might play an essential role in maintaining the spiral shape of M. magneticum AMB-1 cells. 相似文献
5.
中长期预报一直是预报业务和为决策服务工作的难点,也是目前气象部门急需解决的技术问题.成都市气象局在多年的业务实践中,积累了一些统计预报方法.这些方法在对降水过程和降水量的预报中起到了一定的指导作用. 相似文献
6.
为更好地开展成都冰雹天气的监测预报预警工作,利用成都S波段双偏振雷达探测资料,结合区域自动气象站以及常规观测资料,对成都初春冰雹的双偏振参量特征进行研究,重点分析冰雹云的精细结构,并与同年初春发生的短时强降水进行对比分析。结果表明：在高低空急流耦合形成强上升运动的动力条件下,高层冷平流结合地面冷空气共同触发了成都“3·16”冰雹天气。发展成熟的冰雹云,其中心反射率因子(ZH)超过70 dBZ且存在明显的悬垂强回波,差分反射率(ZDR)和相关系数(Correlation Coefficient,CC)分别集中在-2～1 dB和0.8～0.95,并伴有差分相移率(KDP)空洞和云体前侧的CC谷结构,同时在强上升气流附近存在典型的ZDR柱。伴随上升运动减弱,冰雹云前侧出现随距离递减的ZDR大值区,相反CC则呈现递增趋势。相较冰雹云,强降水对流云的ZH较小,而ZDR、CC明显偏大,且其前侧未出现悬垂强回波及明显的ZDR柱... 相似文献
7.
8.
论述了溃变原理Vω-3θ图结构分析方法,并结合实例对此次过程进行了预测分析,结果表明在灾害性天气的预测中,溃变原理Vω-3θ图结构分析方法是一种有效的预测新方法. 相似文献
9.
Magnetospirillum magneticum strain AMB-1 belongs to the family of magnetotactic bacteria. It possesses a magnetosome chain aligning, with the assistance
of cytoskeleton filaments MamK, along the long axis of the spiral cells. Most fresh M. magneticum AMB-1 cells exhibit spiral morphology. In addition, other cell shapes such as curved and spherical were also observed in
this organism. Interestingly, the spherical cell shape increased steadily with prolonged incubation time. As the actin-like
cytoskeleton protein MreB is involved in maintenance of cell shapes in rod-shaped bacteria such as Escherichia coli and Bacillus subtilis, the correlation between MreB protein levels and cell shape was investigated in this study. Immunoblotting analysis showed
that the quantity of MreB decreased when the cell shape changed along with incubation time. As an internal control, the quantity
of MamA was not obviously changed under the same conditions. Cell shape directs cell-wall synthesis during growth and division.
MreB is required for maintaining the cell shape. Thus, MreB might play an essential role in maintaining the spiral shape of
M. magneticum AMB-1 cells. 相似文献
10.
随着全球气候变化加剧和极端天气气候事件增多，加之城市化进程不断推进，人口老龄化日趋凸显，广大民众追求舒适环境进行旅居康养的需求逐年提高，气候康养产业也逐渐成为热门产业。本文基于人体舒适度，概括了国内外气候量化表征的研究成果，归纳了不同舒适度与人群健康之间的利弊关系。在此基础上对气候康养理念，康养气候资源及其康养效应，以及康养地的适宜性评价进行了梳理，展望了相关学科研究及产业发展动向，旨在促进气象医学发展，为加快实现“健康中国2030”战略目标提供参考依据。 相似文献
1