40 research outputs found
8b,8c-Diphenyl-2,6-bis(4-pyridylmethyl)perhydro-2,3a,4a,6,7a,8a-hexaazacyclopenta[def]fluorene-4,8-dithione chloroform solvate
In the thioglycoluril system of the title compound, C32H30N8S2·CHCl3, the two pyridine rings are roughly parallel, forming a dihedral angle of 7.2 (1)°, and the distance between the centroids of the two phenyl rings is 3.951 (5) Å. The chloroform solvent molecule is linked to the main molecule via a weak C—H⋯N hydrogen bond
The Genomes of Oryza sativa: A History of Duplications
We report improved whole-genome shotgun sequences for the genomes of indica and japonica rice, both with multimegabase contiguity, or almost 1,000-fold improvement over the drafts of 2002. Tested against a nonredundant collection of 19,079 full-length cDNAs, 97.7% of the genes are aligned, without fragmentation, to the mapped super-scaffolds of one or the other genome. We introduce a gene identification procedure for plants that does not rely on similarity to known genes to remove erroneous predictions resulting from transposable elements. Using the available EST data to adjust for residual errors in the predictions, the estimated gene count is at least 38,000–40,000. Only 2%–3% of the genes are unique to any one subspecies, comparable to the amount of sequence that might still be missing. Despite this lack of variation in gene content, there is enormous variation in the intergenic regions. At least a quarter of the two sequences could not be aligned, and where they could be aligned, single nucleotide polymorphism (SNP) rates varied from as little as 3.0 SNP/kb in the coding regions to 27.6 SNP/kb in the transposable elements. A more inclusive new approach for analyzing duplication history is introduced here. It reveals an ancient whole-genome duplication, a recent segmental duplication on Chromosomes 11 and 12, and massive ongoing individual gene duplications. We find 18 distinct pairs of duplicated segments that cover 65.7% of the genome; 17 of these pairs date back to a common time before the divergence of the grasses. More important, ongoing individual gene duplications provide a never-ending source of raw material for gene genesis and are major contributors to the differences between members of the grass family
Quantitative studies on the DNA content and morphometric features of liver cell dysplasia
Expression of the Glypican-3 Gene in α-fetoprotein-negative Human Hepatocellular Carcinoma
Synergy of W<sub>18</sub>O<sub>49</sub> and Polyaniline for Smart Supercapacitor Electrode Integrated with Energy Level Indicating Functionality
Supercapacitors are important energy storage technologies
in fields
such as fuel-efficient transport and renewable energy. State-of-the-art
supercapacitors are capable of supplanting conventional batteries
in real applications, and supercapacitors with novel features and
functionalities have been sought for years. Herein, we report the
realization of a new concept, a smart supercapacitor, which functions
as a normal supercapacitor in energy storage and also communicates
the level of stored energy through multiple-stage pattern indications
integrated into the device. The metal-oxide W<sub>18</sub>O<sub>49</sub> and polyaniline constitute the pattern and background, respectively.
Both materials possess excellent electrochemical and electrochromic
behaviors and operate in different potential windows, −0.5–0
V (W<sub>18</sub>O<sub>49</sub>) and 0–0.8 V (polyaniline).
The intricate cooperation of the two materials enables the supercapacitor
to work in a widened, 1.3 V window while displaying variations in
color schemes depending on the level of energy storage. We believe
that our success in integrating this new functionality into a supercapacitor
may open the door to significant opportunities in the development
of future supercapacitors with imaginative and humanization features