61 research outputs found
Ordered arrays of multiferroic epitaxial nanostructures
Epitaxial heterostructures combining ferroelectric (FE) and ferromagnetic (FiM) oxides are a possible route to explore coupling mechanisms between the two independent order parameters, polarization and magnetization of the component phases. We report on the fabrication and properties of arrays of hybrid epitaxial nanostructures of FiM NiFe2O4 (NFO) and FE PbZr0.52Ti0.48O3 or PbZr0.2Ti0.8O3, with large range order and lateral dimensions from 200 nm to 1 micron
Is preview benefit from word nĀ +Ā 2 a common effect in reading Chinese? Evidence from eye movements
Although most studies of reading English (and other alphabetic languages) have indicated that readers do not obtain preview benefit from word nĀ +Ā 2, Yang, Wang, Xu, and Rayner (2009) reported evidence that Chinese readers obtain preview benefit from word nĀ +Ā 2. However, this effect may not be common in Chinese because the character prior to the target word in Yang et al.ās experiment was always a very high frequency function word. In the current experiment, we utilized a relatively low frequency word nĀ +Ā 1 to examine whether an nĀ +Ā 2 preview benefit effect would still exist and failed to find any preview benefit from word nĀ +Ā 2. These results are consistent with a recent study which indicated that foveal load modulates the perceptual span during Chinese reading (Yan, Kliegl, Shu, Pan, & Zhou, 2010). Implications of these results for models of eye movement control are discussed
Prevalence of hyperuricemia and its related risk factors in healthy adults from Northern and Northeastern Chinese provinces
Expression of a fungal manganese peroxidase in Escherichia coli: a comparison between the soluble and refolded enzymes
Optimal wireless sensor network configuration for structural monitoring using automatic-learning firefly algorithm
Mathematical simulation of temperature distribution in tumor tissue and surrounding healthy tissue treated by laser combined with indocyanine green
Disruption of the plant gene MOM releases transcriptional silencing of methylated genes
Epigenetic modifications change transcription patterns in multicellular organisms to achieve tissue-specific gene expression and inactivate alien DNA such as transposons or transgenes. In plants and animals, DNA methylation is involved in heritability and flexibility of epigenetic states, although its function is far from clear. We have isolated an Arabidopsis gene, MOM, whose product is required for the maintenance of transcriptional gene silencing. Mutation of this gene or depletion of its transcript by expression of antisense RNA reactivates transcription from several previously silent, heavily methylated loci. Despite this, the dense methylation at these reactivated loci is maintained even after nine generations, indicating that transcriptional activity and methylation pattern are inherited independently. The predicted MOM gene product is a nuclear protein of 2,001 amino acids containing a region similar to part of the ATPase region of the SWI2/SNF2 family, members of which are involved in chromatin remodelling. MOM is the first known molecular component that is essential for transcriptional gene silencing and does not affect methylation pattern. Thus, it may act downstream of methylation in epigenetic regulation, or be part of a new pathway that does not require methylation marks
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