Satellite DNA profiles have been characterized in the congeneric species Palorus ratzeburgii, Palorus subdepressus, Palorus genalis, and Palorus ficicola (Coleoptera, Insecta), each of which contains a single, A + T-rich satellite DNA comprising a considerable portion of the genome (20%-40%). These satellites exhibit insignificant mutual sequence similarity. Using PCR assay, it has been shown t...

The location of a sequence within the Y satellite RNA of cucumber mosaic virus (CMV) that confers the ability to induce necrosis on tomato plants has been analysed using chimeric satellite RNAs. These recombinant RNA molecules contained parts of the Y (necrogenic) and Ra (benign) satellite RNAs and were inoculated into tomato plants together with CMV helper virus. From the composition of the re...

Satellite cells function as precursor cells in mature skeletal muscle homeostasis and regeneration. In healthy tissue, these cells are maintained in a state of quiescence by a microenvironment formed by myofibers and basement membrane in which LAMININs (LMs) form a major component. In the present study, we evaluated the satellite cell microenvironment in vivo and found that these cells are enca...

Satellite cells play a central role in mediating the growth and regeneration of skeletal muscle. However, whether satellite cells are stem cells, committed progenitors, or dedifferentiated myoblasts has remained unclear. Using Myf5-Cre and ROSA26-YFP Cre-reporter alleles, we observed that in vivo 10% of sublaminar Pax7-expressing satellite cells have never expressed Myf5. Moreover, we found tha...

The objective of this study was to establish the optimum protocol for the isolation and culture of porcine muscle satellite cells. Mononuclear muscle satellite cells are a kind of adult stem cell, which is located between the basal lamina and sarcolemma of muscle fibers and is the primary source of myogenic precursor cells in postnatal muscle. Muscle satellite cells are a useful model to invest...

By its nature, the satellite sector is the most “pan-European” of all communications infrastructures and services. Unlike any terrestrial network, satellite networks can provide coverage to all parts of Europe. This strength of satellite networks, nonetheless, creates a great regulatory challenge. Due to wide satellite coverage, operators depend on harmonized spectrum allocations. The services ...

Low earth orbit (LEO) satellite systems gained considerable interest in the past decade and were expected to be instrumental in future telecommunications systems. Nevertheless, the first two LEO satellite networks that are currently in operation have not come to fruition on account of the limited spectrum of services that they provide. In this context, future LEO satellite networks will be gear...

With the application of different kinds of satellites, the satellite network will be one heterogeneous and complex system, then the satellite network management is more difficult and the classical network management architecture cannot be applied to the satellite network directly. Aimed at the new features of the satellite network, a hierarchy network management architecture is proposed and a n...

As a service to the satellite operator community, the Center for Space Standards & Innovation (CSSI) offers SOCRATES—Satellite Orbital Conjunction Reports Assessing Threatening Encounters in Space. CSSI runs a list of all satellite payloads on orbit against a list of all objects on orbit using the catalog of all unclassified NORAD two-line element sets (TLEs) to look for satellite conjunctions ...