本文通过密度泛函理论第一性原理平面波超软赝势计算方法计算了 Mn掺杂6H-SiC的电子结构与光学性质.计算结果显示掺杂Mn后的6H-SiC为间接带隙p型半导体,且带隙较本征体有所降
本文利用第一性原理计算方法,对具有半金属性的四元Heusler合金TiZrCoIn两个不同终端表面效应进行了理论研究,主要针对表面效应对其结构、磁性、电子结构、自旋极化率及半金
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我是2007年2月8日入党的。回想自己的入党经历,可以用"三番两次"来形容,即写过三次入党申请书,履行过两次入党程序。1992年,我第一次向党组织递交了入党申请书。那年学校举办入党积极分子培训班,在取得结业证书后,很多同学都写了入党申请书。那时,我对党的认识还是懵懂的。但大家都写了,自己不写,岂不是显得落伍和不求上进呀?现在看来,那时写入党申请书有一定的从众心理,更像是表明一种态度,或者说是完成一
A pair of neolignan enantiomers with an unprecedented carbon skeleton,(+)-/(-)-angelignanine[(+)-/(-)-1],was isolated as minor components of an aqueous extract
Polypeptoids have been explored as mimics of polypeptides,owing to polypeptoidssuperior stability upon proteolysis.Polypeptoids can be synthesized from one-pot ring-opening polymerization of amino acid N-substituted N-carboxyanhydrides(NNCAs).However,th
A convenient synthetic protocol for the hexasubstituted benzene derivatives was successfully developed by DABCO promoted domino reaction of arylidene malononitrile with two molecules of dialkyl but-2-ynedioates.The domino reaction resulted in tetraalkyl 6
Rhodium(Ⅲ)-catalyzed[4+1]cyclization of azobenzenes with α-Cl ketones has been developed.3-Acyl-2H-indazoles could be easily afforded in up to 97%yields for more than 30 examples.The obtained products are potentially valuable in organic synthesis and drug
The stimulator of interferon genes(STING)shows promising clinical activity in infectious diseases and tumors.However,the lack of targeting capability and intracellular stability of STING agonists severely limits the therapeutic efficacy.Recently,drug deli
Pathological detection using immunohistochemistry(IHC)has become an indispensable process in the diagnosis confirmation of various cancers.However,the productio