搜索结果: 1-15 共查到“理学 Cn”相关记录65条 . 查询时间(0.046 秒)
清华大学医学院梁冠翔课题组发表题为“The pediatric virome in health and disease”长文综述（图https://www.med.tsinghua.edu.cn/info/1049/3980.htm）（图）
人体微生物 清华大学医学院 噬菌体
2023/6/16
2022年5月11日，清华大学医学院基础医学系、清华大学医学院传染病研究中心、清华-北大生命科学联合中心梁冠翔课题组与宾夕法尼亚大学医学院Frederic Bushman课题组受邀合作为国际知名学术期刊《Cell Host & Microbe》15周年纪念特刊撰写题为“The pediatric virome in health and disease”的综述文章。该文章系统概述了人类病毒组从起源...
为了完成诸多任务，细胞需要能量。在能量来源线粒体中，食物中的能量转化为三磷酸腺苷（ATP）分子。它作为一种燃料，驱动从肌肉收缩到DNA组装的大多数细胞过程。奥地利科学技术研究所的Leonid Sazanov和Irene Vercellino首次精确展示了哺乳动物细胞中蛋白质组装过程。
Rainfall-runoff risk characteristics of urban function zones in Beijing using the SCS-CN model
SCS-CN model urban function zone spatial cluster runoff risk
2018/4/9
Urbanization significantly increases the risk of urban flooding. Therefore, quantitative study of urban rainfall-runoff processes can provide a scientific basis for urban planning and management. In t...
A proposal of regionalization for the application of the CN earthquake prediction algorithm to the Italian territory
Earthquake prediction CN algorithm Italy seismotectonic model
2015/9/30
A regionalization of the Italian territory, strictly based on seismotectonic zoning and the main geodynamic features of the Italian area, is proposed for intermediate-term earthquake prediction with C...
Can we model observed soil carbon changes from a dense inventory? A case study over England and Wales using three versions of the ORCHIDEE ecosystem model (AR5, AR5-PRIM and O-CN)
model observed soil carbon changes inventory
2014/12/12
A widespread decrease of the topsoil carbon content was observed over England and Wales during the period
1978–2003 in the National Soil Inventory (NSI), amounting
to a carbon loss of 4.44 Tg yrW...
Analysis of surface runoff from Yerala River Basin using SCS-CN and GIS
Analysis of surface runoff SCS-CN GIS
2014/11/12
Watershed Management plays vital role in water resources engineering. It is necessary to plan
and conserve the available resources. Remote Sensing (RS) and Geographic Information
System (GIS) tech...
采用纳米沉淀法制备了半导体聚合物CN-PPV纳米粒子,并用改进的Stöber方法对纳米粒子进行包覆,获得了发光稳定的SiO2/CN-PPV纳米粒子。用动态光散射(DLS)及透射电镜(TEM)方法对粒子尺寸进行了表征,结果表明包覆前的CN-PPV纳米粒子平均粒径约为30 nm,包覆获得SiO2/CN-PPV纳米粒子的平均粒径约为60 nm。通过紫外-可见吸收光谱及荧光光谱对包覆前后纳米粒子...
First observations of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) emission lines in the Perseus cluster: constraints on heating mechanisms in the cluster gas
Astrochemistry - ISM:abundances - galaxies: intergalactic medium - Galaxies: clusters: individual:Perseus - galaxies: individual: NGC 1275 - Galaxies: cooling fl ows
2011/10/8
We present the first observations of emission lines of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) in the Perseus cluster. We observed at two positions: directly at the central galaxy, NGC 1275 and also...
采用B3LYP/6-311++G(d,p)和MP2/6-311++G(d,p)理论方法研究了CH3⊕…Br-Y(Y=H, CCH, CN, NC) 缺电子体系中Br参与的反向卤键(IXB)结构. 四个IXB复合物中，MP2/6-311++G(d,p)水平上考虑了基组叠加误差的分子间相互作用能分别为218.87, 219.48, 159.18和143.05 kJ/mol，相对稳定性的递增顺序CH3⊕...
分子基磁体Cr[N(CN)2]2电子结构和半金属性的第一性原理研究
第一性原理 磁性 半金属性
2012/1/5
基于第一性原理方法结合广义梯度近似，研究了分子基磁体Cr[N(CN)2]2的电子结构和半金属性. 对总能量，自旋极化的能带结构，态密度以及自旋磁矩的计算表明该分子磁体为半金属铁磁体．每个分子的总磁矩为2.00μB，其中Cr2+对分子磁矩的贡献较大，而配位体上的碳原子和氮原子的贡献相对较小．讨论了当晶格常数发生小幅变化时材料半金属性的变化.
In this paper, we prove that, under an assumption, a harmonic map of finite ˉ@-energy from Cn (n 2) to any K¨ahler manifold must be a holomorphic map. It can be seen as a complex analogue of the Lio...
The impact of dust on sulfate aerosol, CN and CCN during an East Asian dust storm
dust sulfate aerosol East Asian dust storm
2010/2/1
A global model of aerosol microphysics is used to simulate a large East Asian dust storm during the ACE-Asia experiment. We use the model together with size resolved measurements of aerosol number con...
激光诱导荧光法研究CN(V″=0,1)自由基与碳氢化合物的反应速率和机理
碳氢化合物 自由基 荧光法 激光诱导
2010/1/15
激光诱导荧光法研究CN(V″=0,1)自由基与碳氢化合物的反应速率和机理。
H2 + CN(n=0,1)→H + HCN振动选态反应
氰基 内禀反应坐标(IRC) 反应速率常数 选态反应
2009/12/8
用从头算方法获得了H2＋CN反应的内禀反应坐标（IRC）．沿着IRC，计算了各垂直于IRC的简正模所对应的频率（ω）以及沿IRC运动与垂直于IRC运动的简正模之间的耦合常数（BKF）. 根据传统过渡态、变分过渡态理论和选态公式，计算了nCN=0及nCN=1时反应的速率常数，并得到了和实验相一致的结果. 还计算了nCH=1及nCN=1时H＋HCN→H2＋CN反应速率常数. 可供实验工作者参考.