The effect of a regenerative heat exchanger in a gas turbine is analyzed using a regenerative Brayton cycle model, where all fluid friction losses in the compressor is quantified by an isentropic efficiency term and all global irreversibilities in the heat exchanger are taken into account by means of an effective efficiency. This analysis, which generalizes that reported by Gordon and Huleihil ...

The results of theoretical studies the possibilities using hybrid solid oxide fuel cell–gas turbine (SOFC-GT) systems for marine power plants are presented. A 500 kW auxiliary plant scheme stacks SOFCs in combination with a regenerative gas operating over-expansion based on our recent patent application is proposed. mathematical modelling showed opportunity to obtain efficiency about 55% optima...

Proliferating cell nuclear antigen (PCNA, sliding clamp) is a toroidal-shaped protein that encircles DNA and plays a pivotal role in DNA replication, modification and repair. To perform its vital functions, the clamp has to be opened and resealed at primer-template junctions by a clamp loader molecular machine, replication factor C (RFC). The mechanism of this process constitutes a significant ...

The linkage of sister chromatids after DNA replication ensures the faithful inheritance of chromosomes by daughter cells. In budding yeast, the establishment of sister chromatid cohesion requires Ctf8, Dcc1, and Ctf18, a homologue of the p140 subunit of the replication factor C (RFC). In this report we demonstrate that in 293T cells, Flag-tagged Ctf18 forms a seven-subunit cohesion-RFC complex ...

Subunits of the Rad9/Rad1/Hus1 (9-1-1) proliferating cell nuclear antigen (PNCA)-like sliding clamp are required for DNA damage responses and telomerase-mediated telomere replication in the nematode Caenorhabditis elegans. PCNA sliding clamps are loaded onto DNA by a replication factor C (RFC) clamp loader. The C. elegans Rad17 RFC clamp loader homolog, hpr-17, functions in the same pathway as ...

Microglia is considered the only cell population of mesodermal origin, which comprises 10% of the cells in brain parenchyma. Recent neural stem cell (NSC) studies demonstrate that the brain has regenerative potential. NSCs do not give rise to microglial cells, however indicating that NSCs alone cannot complete the regenetion of the brain. Although the role of microglia is not fully understood, ...

This memo contains a table of commonly occurring headers in headings of e-mail messages. The document compiles information from other RFCs such as RFC 822, RFC 1036, RFC 1123, RFC 1327, RFC 1496, RFC 1521, RFC 1766, RFC 1806 and RFC 1864. A few commonly occurring headers which are not defined in RFCs are also included. For each header, the memo gives a short description and a reference to the R...

Contact resistance among the components of a polymer exchange membrane fuel cell (PEMFC) has a crucial effect on cell performance. The geometry of the endplate plays an essential role in the contact pressure distribution over the membrane electrode assembly (MEA) and the amount of contact resistance between plates. In this work, the effects of endplate geometry on the contact pressure distribut...

The rosette-forming cell (RFC) response of mice immunized with varying doses of Toxoplasma gondii was studied by immunocytoadherence (ICA). The specificity of ICA in the present system was tested by passive sensitization with hyperimmune serum in vivo and in vitro. A slight increase in RFC was observed with the latter. Prior treatment of spleen cells from immunized animals with rabbit anti-mous...