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植物SE表达受精确调控的分子机制获揭示
分子机制 南京大学 叶片发育
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2024/1/12
近日，南京大学生命科学学院教授孙博实验室解析了在植物生长发育不同时期及抗病过程中SERRATE（简称SE）表达受精确调控的分子机制。该研究同时介绍了一种在植物体内整体性捕获关键基因上游直接调控因子的方法。相关研究成果在线发表于《自然—植物》。
二维BX(X=S,Se,Te)结构预测与性质的第一性原理研究
结构预测 电子结构 力学性质 载流子迁移率
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2022/3/28
采用基于粒子群优化算法的结构预测程序CALYPSO结合密度泛函理论的VASP软件包，预测得到二维BX(X=S、Se、Te)的最低能量结构，该结构是由B和X原子形成的双层褶皱的六角密堆积结构，层与层之间较强的B-B键是稳定结构的关键．凝聚能和声子谱计算结果表明二维BX(X=S、Se、Te)在热力学和动力学上均是稳定的．能带结构和电子态密度的计算分析发现三种二维材料均呈现间接带隙半导体行为，带隙分别为...
通过慢速滴定法合成了高活性的多羟基结构亚铁FHC（Cl-），对FHC（Cl-）去除Se（Ⅳ）的动力学进行了研究，并对体系中的投加量、pH值、溶解氧和氯化钠浓度进行了响应面分析.研究结果表明，FHC（Cl-）去除Se（Ⅳ）的表观速率常数kobs=0.60 min-1，约为纳米零价铁的4倍和零价铁的16倍.由Box-Benhnken设计拟合得出响应值对编码自变量的二次多项回归方程为Y（c/c0）=0....
通过慢速滴定法合成了高活性的多羟基结构亚铁FHC（Cl-），对FHC（Cl-）去除Se（Ⅳ）的动力学进行了研究，并对体系中的投加量、pH值、溶解氧和氯化钠浓度进行了响应面分析.研究结果表明，FHC（Cl-）去除Se（Ⅳ）的表观速率常数kobs=0.60 min-1，约为纳米零价铁的4倍和零价铁的16倍.由Box-Benhnken设计拟合得出响应值对编码自变量的二次多项回归方程为Y（c/c0）=0....
The autumn 1919 Torremendo (Jacarilla) earthquake series (SE Spain)
Jacarilla earthquake Moment magnitude Environmental effects Aftershock series Macroseismicity
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2015/8/14
On 10th September 1919 several slightly damaging earthquakes struck the towns of Torremendo, Jacarilla (near Alicante, SE-Spain) and others nearby. Available magnitude estimations for the largest two ...
MAPPING LAND COVER IN THE TAITA HILLS, SE KENYA, USING AIRBORNE LASER SCANNING AND IMAGING SPECTROSCOPY DATA FUSION
GEOBIA LCCS Hyperspectral data
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2015/5/7
The Taita Hills, located in south-eastern Kenya, is one of the world’s biodiversity hotspots. Despite the recognized ecological importance of this region, the landscape has been heavily fragmented d...
The 11 May 2011 earthquake at Lorca (SE Spain) viewed in a structural-tectonic context
earthquake at Lorca structural-tectonic context
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2014/12/31
The Lorca earthquake of 11 May 2011 in the Betic Cordillera of SE Spain occurred almost exactly on the Alhama de Murcia fault, a marked fault that forms part of a NE-SW trending belt of faults and thr...
新疆511铀矿床7号采区U-Se-Re-Mo等元素分布特点
地球化学 Re Se Mo U 7号采区 511铀矿床 新疆
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2012/5/16
Re、Se是中国急需的紧缺矿种,对国家的资源战略与环境安全保障具有重要影响。新疆伊犁盆地511矿床在开采铀的过程中,发现了Re、Se和Mo等元素存在富集的现象。文章以511矿床7号采区为例,采取野外地质调查与室内分析测试及综合研究相结合的技术路线,以探求Re、Se、Mo等元素的分布特点及其与U元素富集之间的关系。研究表明,Re和Se在空间上与砂岩铀矿体密切共生,说明在511矿床中矿源等条件具备的情...
Continuous radon monitoring in the Jowshan hot spring as an earthquake precursor, SE Iran
earthquake precursor Jowshan hot spring continuous monitoring
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2017/4/12
In this paper, we present the results of the first experience for spring water 222Rn concentration continuous monitoring
in Jowshan hot spring, SE Iran, from December 2007 to July 2008. This hot spri...
常压下Se和Te电子结构和弹性性质的第一性原理计算
第一性原理计算 能带结构 弹性系数 德拜温度
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2012/11/14
利用基于密度泛函的第一性原理, 计算ⅥA族元素Se和Te在常压下的能带结构、 电子态密度、 弹性系数和德拜温度. 能带结构和电子态密度的计算结果表明: Se为间接带隙半导体, Se费米面附近的导带和价带主要来自外层4p4电子的贡献, 4s2电子对费米面附近的导带和价带贡献较少; Te为直接带隙半导体, Te费米面附近的导带和价带主要来自外层5p4电子的贡献, 5s2电子对费米面附近的导带和价带贡...
龙牙木忽SE基因克隆与植物表达载体构建
龙牙木忽 鲨烯环氧酶(SE)基因 植物表达载体 三萜皂苷
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2011/8/17
采用RT－PCR的方法,从龙牙木忽中克隆到鲨烯环氧酶(SE)基因,该基因的cDNA全长为1 ６８２ bp, 含有1 6４４ bp的开放阅读框(ORF),编码54７个氨基酸, 将所得的序列提交GenBank数据库,登录号为GU354314。序列分析结果表明:龙牙木忽SE基因的氨基酸序列与人参、三七、绞股蓝的同源性＞90％,并构建了该基因的植物表达载体pAeSE。
Trend and characteristics of atmospheric emissions of Hg, As, and Se from coal combustion in China, 1980–2007
atmospheric Hg As Se coal combustion
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2010/12/28
Emissions of hazardous trace elements in China are of great concern because of their negative impacts on local air quality as well as on regional environmental health and ecosystem risks. In this pape...
Effect of p-d hybridization and structural distortion on the electronic properties of AgAlM2 (M = S, Se, Te) chalcopyrite semiconductors
A. Chalcopyrite A. Semiconductors E. Density Functional Theory E. TB-LMTO
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2010/11/18
We have carried out ab-initio calculation and study of structural and elec-tronic properties of AgAlM2 (M = S, Se, Te) chalcopyrite semiconductors using Density Functional Theory (DFT) based self cons...
se Measurements of Direct CP Violation, CPT Symmetry, and Other Parameters in the Neutral Kaon System
se Measurements of Direct CP Violation, CPT Symmetry Other Parameters Neutral Kaon System
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2011/1/4
We present precise tests of CP and CPT symmetry based on the full dataset of K ! ππ decays
collected by the KTeV experiment at Fermi National Accelerator Laboratory during 1996, 1997, and 1999.
Petrogenesis of Early Cretaceous silicic volcanism in SE Uruguay: The role of mantle and crustal sources
Uruguay Paraná-Etendeka rhyolite lower crust crustal contamination
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2017/8/9
Early Cretaceous (~129 Ma) silicic rocks crop out in SE Uruguay between the Laguna Merín and Santa Lucía basins in the Lascano, Sierra São Miguel, Salamanca and Minas areas. They are mostly rhyol...