A simple growth model has been successfully developed for the determination of the As to P incorporation ratio, i.e., molefraction y, in growing GaxIn1−xAsyP1−y quaternary alloys by gas source molecular beam epitaxy. The model covers the whole composition range with only two...
The distribution of platinum group elements (PGE) within individual lithological units of the dismembered ophiolite of the Great Serpentinite Belt in New South Wales displays distinctive patterns. Within the ophiolite the PGE are mainly magmatic in origin, although the whole sequence has been extensively...
For any prime p we consider the density of elements in the multiplicative group of the finite field F_p having order, respectively index, congruent to a(mod d). We compute these densities on average, where the average is taken over all finite fields of prime order. Some connections between...
Table 4. Correlation table of chemical variables in soil 组别Group 土壤化学变量Soil chemical variable 个数Number 第一类 Cd、As、Zn、氧化铁 4 第二类 Hg、Cr、Ni 4 第三类 Cu、Pb 2 第四类 pH、SOM 2 | Show Table DownLoad: CSV 因地理位置、大自然和人类活动等因素形成的土壤重金属的异常迁移...
来自 NCBI 喜欢 0 阅读量: 48 作者:CM Thomas,MA Cross,AA Hussain,CA Smith 摘要: Broad host-range plasmid RK2 is able to replicate in a controlled manner in most Gram negative bacterial species. To analyze the elements of its control mechanism, we have measured the copy number in ...
Multivariate statistics revealed similar associations between PTE in the three cities, with Cu, Pb, and Zn in a group, and Ni and Cr in another, suggesting an anthropogenic origin for the former group and natural one for the latter. Chromium and Ni were unaffected by land use, except for ...
There is as yet an open question as to what is the mechanism of EF-P acceleration of Pro-Pro bond formation. A plausible hypothesis is that via the interaction of EF-P with the D-arm of tRNAProin the P site, the ester’s carbonyl group Pro-tRNAProis appropriately positioned in the ...
The other feature, namely the iron-group peak, is due to the stability of those nuclei that have the highest binding energy per nucleon. The abundance curve presents a completely different trend beyond iron with a close to flat slope in three steps between double-peak structures related to ...
The atomic arrangement of a natural rare-earth-rich titanite and two synthetic rare-earthdoped titanites have been refined in space group A2/a, and the atomic arrangement of an undoped P21/a synthetic titanite was also refined for comparison. Previous work has shown that titanite possesses a do...
Transposable Elements (TEs) contribute to the repetitive fraction in almost every eukaryotic genome known to date, and their transcriptional activation can influence the expression of neighboring genes in healthy and disease states. Single cell RNA-Seq (