the modulation response, relative intensity noise and frequency noise characteristics of qd lasers are investigated theoretically, in presence of an additional optical pumping. it is revealed that the modulation response of qd laser enhances under additional optical beam. by small signal analysis of the carriers' and photons' rates, it is proposed that by injecting excess carriers to ...

multiple sclerosis is an autoimmune disease of the central nervous system which its main characteristic is an inflammation and demyelination and subsequent, neural degeneration. many studies have shown that inflammation causing neuronal demyelination. ms is the most common cause of chronic neurological disability in during youth which the prognosis is that can be death. platelet activating fact...

background tnf-α is one of the most potent cytokines in proinflammatory reactions. results one hundred and twenty children with acute pyelonephritis were evaluated. urinary tnf-α/cr was 0.0051 ± 0.00083 pg/g creatinine. the authors found out a significant difference in urinary tnf-α/cr between patients who have normal and abnormal levels of urine leukocytes, urine protein, urine culture, erythr...

the aim of this study was to investigate the response of vascular endothelial growth factor (vegf) to a bout of exhausted submaximal exercise and its correlation with vo2max in different bouts. therefore, 12 active men (mean age: 24 years) were randomly selected and performed the submaximal exercise. blood samples were collected before, immediately and two¬¬ hours after the exercise training. d...

Abstract Transcription factors play important roles in plant abiotic stresses. However, there are a large number of TF functions rice salt response need to be characterized. Our study identified new transcription factor, BEAR1, acts as regulator response. We used artificial microRNA generate BEAR1 knockdown transgenic rice, and CRISPR gene editing mutant lines. Both lines showed sensitive pheno...

in this study, for evaluating ductility of ordinary concentrically braced frames (ocbfs) and special concentrically braced frames (scbfs) which are x- braced in two adjacent middle spans, 16 steel ordinary concentrically braced frames and 16 special concentrically braced frames are studied. the results confirm that, although most of ordinary concentrically braced frames, which are x-braced, can...

The response to drought stress is a complicated process involving stress sensing, intracellular signaltransduction, and the execution of a cellular response. Transcription factors play important roles in the signaling pathways including abiotic stress. In the present study a rice NF-YA transcription factor gene was partially characterized following dehydration. Disrupting the gene via a T...

the gene tp53 (also known as protein 53 or tumor protein 53), encoding transcription factor p53, is mutated or deleted in half of human cancers, demonstrating the crucial role of p53 in tumor suppression. there are reports of nearly 250 independent germ line tp53 mutations in over 100 publications. the p53 protein has the structure of a transcription factor and, is made up of several domains. t...