3,718 research outputs found
DiaquaÂbisÂ(5-carbÂoxy-2-propyl-1H-imidazole-4-carboxylÂato-Îş2 N 3,O 4)cadmium(II) 3.5-hydrate
In the title complex, [Cd(C8H9N2O4)2(H2O)2]·3.5H2O, the CdII is coordinated by two water molÂecules and N,O-chelated by two 5-carbÂoxy-2-propyl-1H-imidazole-4-carboxylÂate anions in a distorted octaÂhedral geometry. The two imidazole rings are oriented to each other with a dihedral angle of 75.1 (2)°. Strong O—Hâ‹ŻO hydrogen bonds between protonated and deprotonated carboxylÂate groups occur in the molÂecular structure. In the crystal structure extensive O—Hâ‹ŻO and N—Hâ‹ŻO hydrogen bonds help to stabilize the three-dimensional supraÂmolecular framework. The propyl groups of anions are disordered over two sites with refined occupancies of 0.768 (6):0.232 (6) and 0.642 (8):0.358 (8)
THE INFLUENCE OF BACKPACK CARRIAGE ON TRUNK POSTURE IN CHILDREN DURING UNPLANNED GAIT TERMINATION
This study aimed to examine the trunk posture in children with different backpack loads during unplanned gait termination. Twelve school boys aged 9–10 years completed unplanned and planned gait termination with a backpack load of 0%, 10%, and 15% of their body weight (BW) while level walking. Trunk inclination angle and trunk range of motion at sagittal plane and spinal angle at frontal plane were examined. In comparison
with 0% BW load condition, the spinal angle increased significantly at 10% and 15% BW load condition during gait termination (
Genetic changes in fetal cerebral cortex after maternal exposure to sevoflurane
Purpose: To investigate the acute changes in transcriptome of radial glial progenitor cells after maternal exposure to sevoflurane.Methods: Two groups of sample data were collected from the data set in the GEO database. Pregnant mice in sevoflurane group were exposed to 2.5 % sevoflurane for 6 h on day 14.5 of the pregnancy, while the mice in control group were exposed to 100 % oxygen for 6 h. At the end of the exposure period, the cerebral cortex of the two groups of fetuses was isolated and analyzed by RNA sequencing. Differentially expressed genes (DEG) were analyzed using limma package of R language. The Gene Ontology (GO) and KEGG pathway enrichment were based on DEG through a cluster profile package of R. Moreover, protein-protein interactions (PPI) network construction and central gene prediction were carried out using a string database and R package.Results: Bioinformatics analysis revealed 289 up-regulated genes and 311 down-regulated DEGs, respectively. Gene Ontology and KEGG enrichment analysis revealed terms related to neural development and transcriptional function. Based on the central genes of the PPI network, it was found that certain genes may play significant roles in the regulation of neural development. These genes are hnRNPM, AURKA, NCBP, SRSF6, ASF1B, HNRNPA2B1, DDX21, H3F3B, KPNA2 and ABCE1 (p < 0.05).Conclusion: The findings of this study suggest that hub genes and a variety of signal pathways may play key roles in the development of radial glial progenitor cells
Crystal Structure Manipulation of the Exchange Bias in an Antiferromagnetic Film
Exchange bias is one of the most extensively studied phenomena in magnetism,
since it exerts a unidirectional anisotropy to a ferromagnet (FM) when coupled
to an antiferromagnet (AFM) and the control of the exchange bias is therefore
very important for technological applications, such as magnetic random access
memory and giant magnetoresistance sensors. In this letter, we report the
crystal structure manipulation of the exchange bias in epitaxial hcp Cr2O3
films. By epitaxially growing twined (10-10) oriented Cr2O3 thin films, of
which the c axis and spins of the Cr atoms lie in the film plane, we
demonstrate that the exchange bias between Cr2O3 and an adjacent permalloy
layer is tuned to in-plane from out-of-plane that has been observed in (0001)
oriented Cr2O3 films. This is owing to the collinear exchange coupling between
the spins of the Cr atoms and the adjacent FM layer. Such a highly anisotropic
exchange bias phenomenon is not possible in polycrystalline films.Comment: To be published in Scientific Reports, 12 pages, 6 figure
Slow light with a swept-frequency source
We introduce a new concept for stimulated-Brillouin-scattering-based slow
light in optical fibers that is applicable for broadly-tunable frequency-swept
sources. It allows slow light to be achieved, in principle, over the entire
transparency window of the optical fiber. We demonstrate a slow light delay of
10 ns at 1550 nm using a 10-m-long photonic crystal fiber with a source sweep
rate of 0.4 MHz/ns and a pump power of 200 mW. We also show that there exists a
maximal delay obtainable by this method, which is set by the SBS threshold,
independent of sweep rate. For our fiber with optimum length, this maximum
delay is ~38 ns, obtained for a pump power of 760 mW.Comment: 6 pages, 5 figure
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