55 research outputs found
Pierre Loti'nin yüzüncü doğum yıldönümü
Taha Toros Arşivi, Dosya Adı: Pierre Lotiİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033
Sampling Sites of Dataset
In the dataset, we identified a total of 3658 sampling sites in both provinces and prefecture-level cities
The Final Dataset
The dataset comprised a total of 746 studies (encompassing 840 data sets and 3658 populations) across 343 species from 1998 to 2022
References of Initial Dataset
This file contains not only the corresponding references for dataset, but also the discarded references with reasons from the initial inventory
Two new iridal-type triterpenoids from <i>Iris forrestii</i>
Two new iridal-type triterpenoids, named forrestins A and B (1 and 2), were isolated from Iris forrestii Dykes by comprehensive chromatographic methods. The structures of 1 and 2 were elucidated by interpretation of extensive spectroscopic data including 1D and 2D NMR and HRESIMS.</p
Effect of Al Electronic Configuration on the SiO<sub>2</sub> Thin Film Growth via Catalytic Self-Assembling Deposition
A self-assembling
deposition process of SiO<sub>2</sub> thin film
growth catalyzed by Al with a small silanol precursor was systematically
studied using density functional theory. The full catalytic self-assembling
deposition (CSD) cycle is divided into two half reactions. In the
first half, the trimethylaluminum molecule undergoes a dissociation
process on the hydroxylated SiO<sub>2</sub>(001) surface that results
in the anchoring of an −AlCH<sub>3</sub> species on the surface
and the sequential elimination of two CH<sub>4</sub> molecules. Subsequently,
in the second half of the reaction, two reaction routes, i.e., the
top-down and the bottom-up routes, were examined to address the growth
mechanism of the chain extension with bis(methoxyl)-monobutoxylsilanol.
Our results suggest that the bottom-up route is energetically preferred
with a strong influence by the catalytic effect of the seed layer
of the Al species. The sp<sup>2</sup> electronic configuration of
the Al atom allows its p<sub><i>z</i></sub> orbital to accept
electron from the lone pair of the silanol precursor, which facilitates
the Al–O formation. The electronic configuration of the Al
atom was found to undergo sp<sup>2</sup> → sp<sup>3</sup> →
sp<sup>2</sup> evolution cycles along the reaction pathway, each of
which produces one layer of a Si–O unit to grow the chain.
Our results are consistent with the experimental observations and
provide a detailed mechanistic understanding on the CSD processes
Data set information
A file containing the Genbank accessions and popset for each re-analysed data set
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