background: iron deficiency and its related anemia, which is the world’s most widespread nutritional deficiency, can be one of the possible consequences of regular blood donation. this research was carried out to compare iron stores in regular blood donors and first-time blood donors in tehran regional blood transfusion center. materials and methods: this study was carried out on 2,149 male blo...

results implementation of modern techniques of immune monitoring, allograft function, awareness about the specific infectious and non-infectious disease in each region improves the quality of renal transplantation. conclusions we need to combine the advance scientific vision with local vigilance to achieve the best outcome in renal allograft recipients evidence acquisitions in this process we s...

Photochemical electron transfer reactions on a picosecond time scale have been studied in two covalently-linked donor-acceptor systems. The first molecule is a chlorophyll-porphyrin-quinone triad that closely mimics photosynthetic charge separation by undergoing picosecond electron transfer in low temperature glasses to yield a radical ion pair that lives for 2 ms and exhibits spin-polarization...

Electromicrobiology is the domain of those prokaryotes able to interact with charged electrodes, using them as electron donors and/or electron acceptors. This is performed via a process called extracellular electron transport, in which outer membrane cytochromes are used to oxidize and/or reduce otherwise unavailable insoluble electron acceptors. EET-capable bacteria can thus be used for a vari...

Electron transfers in photosynthesis and respiration commonly occur between protein-bound prosthetic groups that are separated by large molecular distances (often greater than 10 AÊ ). Although the electron donors and acceptors are expected to be weakly coupled, the reactions are remarkably fast and proceed with high speci®city. Tunneling timetables based on analyses of Fe/Cu to Ru electron-tra...

Microbial biofilms grown utilizing electrodes as metabolic electron acceptors or donors are a new class of biomaterials with distinct electronic properties. Here we report that electron transport through living electrode-grown Geobacter sulfurreducens biofilms is a thermally activated process with incoherent redox conductivity. The temperature dependency of this process is consistent with elect...

The safety of healthy peripheral blood stem cell (PBSC) donors receiving recombinant human granulocyte colony-stimulating factor (rhG-CSF) is a topic that has received considerable attention in recent literature.1-3 The short-term adverse events related to both mobilization and collection as well as the problem of long-term safety monitoring have been discussed extensively, although the latter ...

Abstract The lack of electron donors in oxygen-rich aquatic environments limits the ability natural denitrification to remove excess nitrate, leading eutrophication ecosystems. Herein, we demonstrate that electron-rich substances river or lake sediments could participate long-distance rebalancing reduce nitrate overlying water. A microstructure containing Dechloromonas and consisting an inner l...