The heterochromatic regions around centromeres of animal and plant chromosomes are composed of tandem repetitive sequences, interspersed with transposons and transposon derivatives. These sequences are largely transcriptionally silent and highly methylated, and are associated with specifically modified histones. Although embedded in heterochromatin, Arabidopsis 5S ribosomal RNA genes are among ...

Approximately 1% of the Xenopus laevis genome consists of highly repetitive DNA known alternatively as OAX (for Oocyte Activation in Xenopus), Satellite I, or Repetitive HindIII Monomer 2. Present as tandemly repeated units of approximately 750 base pairs, OAX encodes a family of small RNA species transcribed by RNA polymerase III. Although the subject of many of the classic studies on early em...

In this paper, novel repetitive controllers are proposed based on perfect tracking control (PTC) in order to reject high-order repeatable runout (RRO) of hard disk drives. First, the feedback approach of the repetitive PTC (RPTC) is developed with internal model of periodic disturbance. Although this method has performance robustness against small plant variation, the internal model worsens the...

Defense mechanisms of plant genomes can epigenetically inactivate repetitive sequences and exogenous transgenes. Loss of mutant phenotypes in intronic T-DNA insertion lines by interaction with another T-DNA locus, termed T-DNA suppression, has been observed in Arabidopsis thaliana, although the molecular basis of establishment and maintenance of T-DNA suppression is poorly understood. Here we s...

Transcranial magnetic stimulation (TMS) is a non-invasive brain stimulation technique which, over the last 25 years, has greatly expanded from a simple method for stimulating the motor cortex to an invaluable tool with multiple research, diagnostic and even therapeutic applications. In this review, we discuss the use of repetitive TMS as a means of suppressing cortical hyperexcitability in drug...

BACKGROUND/AIM Our earlier studies on ovarian tumor xenografts provide evidence that co-treatment with selenite prevents the development of resistance to single-treatment using the drug cisplatin. However, these studies did not reflect the repetitive schedule of clinical chemotherapy. We hypothesized that selenite can enhance the effectiveness of cisplatin during the course of repeated treatmen...

Although decision-making is typically seen as a rational process, emotions play a role in tasks that include unfairness. Recently, activation in the right dorsolateral prefrontal cortex during offers experienced as unfair in the Ultimatum Game was suggested to subserve goal maintenance in this task. This is restricted to correlational evidence, however, and it remains unclear whether the dorsol...

Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive technique to induce electric currents in the brain. Although rTMS is being evaluated as a possible alternative to electroconvulsive therapy for the treatment of refractory depression, little is known about the pattern of activation induced in the brain by rTMS. We have compared immediate early gene expression in rat brain afte...

Industrial machines like punching machines and presses can generate structure-borne impact noise, with noise levels exceeding the tresholds, imposed by legal regulations on noise emission. This paper presents an approach of non-collocated active structural acoustic control of transient noise, produced by a repetitive impact excitation. Although there is a significant difference in nature betwee...

This research aims to identified and obtain a description metacognition skill components of students in SMA Al-Azhar Mandiri Palu solving mathematical problem about linear program based on the level ability students. The type this is qualitative research. subject class XII D SMA-Al-Azhar who have high, medium low math ability. Data were collected by video recording, test method interview. resul...