搜索结果: 1-15 共查到“理学 HA”相关记录23条 . 查询时间(0.072 秒)
HUNGA TONGA-HUNGA HA'APAI | Gli effetti della grande eruzione del 2022 osservati nei cieli del Mediterraneo
Vulcano Mediterraneo Atmospheric pressure wave
2024/12/11
L’onda di pressione atmosferica generata dall’eruzione avvenuta nel Pacifico nel gennaio 2022 ha investito anche l’area del Mediterraneo meridionale ed è stata registrata dalle reti di monitoraggio de...
以脂肪族异佛尔酮二异氰酸酯（IPDI）作为硬段、蓖麻油甘油酯（GCO）作为软段，通过原位聚合法制备了羟基磷灰石/蓖麻油甘油酯基聚氨酯（HA/GCPU）复合多孔支架.利用红外光谱和扫描电子显微镜对复合支架进行表征，并测试其力学性能及孔隙率.研究结果表明，
日前，中国科学院昆明植物研究所丽江森林生态系统研究站工作人员密切合作，并带领当地保护区相关工作人员及社区相关群众代表，冒着秋雨，克服海拔高、温度低的不利环境条件，在10个工作日内顺利完成了丽江云杉坪25 ha暗针叶林森林生态系统动态研究大样地土壤因子研究所需的土壤样品第一次野外系统取样工作。
We reinvestigate the problem of Hα intensity oscillations in large flares, particularly those classified as X-class flares. We have used high spatial and temporal resolution digital observations obtai...
以羧甲基纤维素(CMC)为基质，丙烯酸(AA)为单体，凹凸棒黏土(APT)和腐植酸(HA)为复合组分，采用水溶液聚合法制备了羧甲基纤维素接枝聚丙烯酸/凹凸棒黏土/腐植酸(CMC-g-PAA/APT/HA)环境友好复合高吸水性树脂，用红外光谱(FTIR)进行了结构表征。考查了APT和HA含量对树脂吸水倍率和吸水速率的影响，研究了树脂在不同pH溶液中的溶胀行为以及反复吸水性能。试验结果表明，APT和H...
Transport and consumption of oxygen and methane in different habitats of the Ha˚kon Mosby Mud Volcano (HMMV)
Transport oxygen methane
2014/4/17
The Ha˚kon Mosby Mud Volcano is a highly active methane seep hosting different chemosynthetic
communities such as thiotrophic bacterial mats and siboglinid tubeworm assemblages. This study focus...
Geochemical processes and chemosynthetic primary production in different thiotrophic mats of the Ha˚kon Mosby Mud Volcano (Barents Sea)
Geochemical processes chemosynthetic primary production different thiotrophic mats of the Ha˚ kon Mosby Mud Volcano
2014/4/16
We have investigated if in a cold seep methane or sulfide is used for chemosynthetic primary production and if
significant amounts of the sulfide produced by anaerobic oxidation of methane are oxidiz...
4个H9N2亚型禽流感病毒毒株HA基因序列比较与分析
禽流感 H9N2 序列分析 血凝素基因
2009/12/2
［目的］ 测定H9N2 AIV 4个毒株血凝素基因序列，并进行比较分析，从分子生物学角度了解各毒株间的差异和变异规律，进而了解该亚型禽流感的分布及流行规律。［方法］ 参照H9N2亚型禽流感HA基因序列设计1对引物，对禽流感A/Chicken/Hebei/WD/98(H9N2)、A/Chiken/Hebei/ZD/04(H9N2)、 A/Chicken/Beijing/MY/06(H9N2)和A...
高能hA碰撞中的核内级联与靶核碎裂
靶核碎裂 核内级联 高能hA碰撞
2009/7/10
本文在核内级联效应基础上,提出了一个反映高能强子-核碰撞中靶核碎裂的模型,给出了灰粒子和黑粒子的分布及它们之间的关联.结果表明,核的有限电荷数造成了实验上观察到的靶核碎片分布的饱和性.
高能hA碰撞的灰粒子与核内hN碰撞次数的关联
核内hN碰撞次数 灰粒子 高能hA碰撞
2009/7/6
考虑到核内核子的级联碰撞,我们提出了一个描述灰粒子数分布的模型,模型较好地符合实验,说明灰粒子数能更恰当地反映入射强子在核内的碰撞次数.
A comprehensive ha nova survey of m81。
Fabry perot Ha observations of the barred spiral galaxy NGC 3367
Fabry perot Ha NGC 3367 barred spiral galaxy
2009/6/11
Fabry perot Ha observations of the barred spiral galaxy NGC 3367。
Broad HA wings in young planetary nebulae。
The wisconsin Ha mapper：a new look at the warm ionized medium
The wisconsin Ha mapper warm ionized medium
2009/6/5
The wisconsin Ha mapper：a new look at the warm ionized medium。
We reinvestigate the problem of Hα intensity oscillations in
large flares, particularly those classified as X-class flares. We have used
high spatial and temporal resolution digital observations obt...