uniqueN等效于nrow(unique(x))。直接计算唯一行的数量，而无需具体化中间唯一data.table，因此速度更快...
一、Go语言简介 如果你是Go语言新手，或如果你对"并发(Concurrency)不是并行(parallelism)"这句话毫无赶...
If there are nn elements in a set and r1r1 are alike, r2r2 are alike, r3r3 are alike, and so on through rkrk, the number of permutations can be found by n!r1!r2!…rk!n!r1!r2!…rk! Example 6: Finding the Number of Permutations of n Non-D...
Accordingly, the cor- responding electron density was invisible in the present crystallographic analysis. Alternatively, specific rec- tohgenNiti-otneromfiPnIa(l4α,5-)hPe2liaxnrde/goironP.IW(3,e4f,5av)Po3r would require the pre-existing binding pocket which likely involves the idea that...
2B). In addition, co-expression of either β1-Δ17-mycc orβ1-L17α-mycc alone with the ER expression vector pDsRed-ER increased ER colocalization of the mutant β1-subunit when compared with the wild-type β1-subunit. The R value of wild-type β1 was 0.66 ± 0.05 (n = 4),...
The methylation of M7G could affect the circRNA-miRNA-mRNA co-expression during the development of AML resistance, which could further influence the regulation of resistance-associated target genes in AML. Furthermore, gene ontology analysis indicated that the distinct distribution pattern of circRNAs ...
C–N bond formation is integral to modern chemical synthesis owing to the ubiquity of nitrogen heterocycles in small-molecule pharmaceuticals and agrochemicals. Alkene hydroamination with unactivated alkenes is an atom-economical strategy for constructing these bonds. However, these reactions are challenging...
H A N G A N U T Z I U - D E I C H E R ANTIGEN A N D A N T I B O D Y IN PATHOLOGIC SERA AND TISSUES 1 H e t e r o p h i l e , H a n g a n u t z i u D e i c h e r (H-D) a n t i g e n w a s s t u d i e d ...
We observed no substantial conformational changes in the protein backbone for the unliganded and glycan-bound forms of BT1285 (r.m.s.d. of 0.4 Å for 271 residues). The main structural differences between BT1285 and BT3987 involve the length of the β-strands of the TIM barrel (part...
Genome-Guided Discovery of the First Myxobacterial Biarylitide Myxarylin Reveals Distinct C–N Biaryl Crosslinking in RiPP Biosynthesis by Joachim J. Hug 1,2,†, Nicolas A. Frank 1,2,†, Christine Walt 1,2, Petra Šenica 1,2, Fabian Panter 1,2,3 and Rolf Müller 1,2...