Interval Scheduling: We continue our discussion of greedy algorithms with a number of problems motivated by applications in resource scheduling. Our first problem is called interval scheduling. We are given a set R of n activity requests that are to be scheduled to use some resource. Each activity has a given start time si and a given finish time fi. For example, these may represent bids to use...

Extensions of Network Flow: Network flow is an important problem because it is useful in a wide variety of applications. We will discuss two useful extensions to the network flow problem. We will show that these problems can be reduced to network flow, and thus a single algorithm can be used to solve both of them. Many computational problems that would seem to have little to do with flow of flu...

AIMS While a wealth of data has uncovered distinct microRNA (miR) expression alterations in hypertrophic and ischaemic/reperfused (I/R) hearts, little is known about miR regulation and response to ischaemic preconditioning (IPC). METHODS AND RESULTS We analysed miRs in murine hearts preconditioned with six cycles of 4 min ischaemia via coronary artery occlusion, followed by 4 min reperfusion ...

OBJECTIVE MicroRNAs (miRNAs) are small endogenous non-coding regulatory RNAs that control mRNAs post-transcriptionally. Several mouse stem cells miRNAs are cloned differentially regulated in different hematopoietic lineages, suggesting their possible role in hematopoietic lineage differentiation. Recent studies have shown that specific miRNAs such as Mir-451 have key roles in erythropoiesis. ...

background: stem cell differentiation is a process composed of vast variety of factors which are controlled by a network of certain mechanisms. this study aims to determine the possible role of dna methylation, a potent regulator of vhl, ecad and runx3 genes during erythroid differentiation driven by mir-451. materials and methods: to determine the methylation status of promoters and the expres...

MicroRNAs (miRNAs) are important posttranscriptional regulators in immune cells, but how viral infection regulates miRNA expression to shape dendritic cell (DC) responses has not been well characterized. We identified 20 miRNAs that were differentially expressed in primary murine DCs in response to the dsRNA agonist polyinosinic-polycytidylic acid, a subset of which were modestly regulated by i...

PURPOSE microRNAs (miRNA) are small RNAs that function as post-transcriptional regulators of gene expression. Recent evidence has shown that some miRNAs can act as oncogenes or tumor suppressors. This study was conducted to evaluate the potential association of miRNA expression with clinical outcome in patients with gastric cancer. EXPERIMENTAL DESIGN Expression of 250 human mature miRNAs was...

MicroRNA (miRNA) biogenesis and miRNA-guided RNA interference (RNAi) are essential for gene expression in eukaryotes. Here we report that translation initiation factor eIF1A directly interacts with Ago2 and promotes Ago2 activities in RNAi and miR-451 biogenesis. Biochemical and NMR analyses demonstrate that eIF1A binds to the MID domain of Ago2 and this interaction does not impair translation ...

Abstract Aim To examine initial symptoms in emergency and medical helpline calls of patients prior to hospital admission pacemaker implantation due recent onset complete atrioventricular block. Methods In the capital region Denmark, Copenhagen, citizens who require assistance can contact either regional 24h non-urgent 1813 or number 1–1-2 (equivalent 9–1–1). both services, symptoms/purposes are...

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