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131.
Elli Kohen Cahide Kohen Jean-Philippe Reyftmann Patrice Morliere Rene Santus 《Biochimica et Biophysica Acta (BBA)/Molecular Cell Research》1984,805(4):332-336
Microspectrofluorometry of L and WI-38 cells reveals chemical/structural changes due to quiescence or senescence, i.e., lipid peroxidation, spontaneous or photosensitized by hematoporphyrin. Cells treated with hematoporphyrin and a lysosomal umbelliferone probe show a fast-rising umbelliferone emission, plus a fluorescent photoproduct. Studies in rapidly growing versus quiescent L, early passage/late passage WI-38 cells, suggest accumulation of fluorescence Schiff bases (i.e., their association with granular regions of cells in stationary phase, spectral properties, fast increase in photosensitized cells) and a possible lysosomal membrane permeabilization in quiescent or senescent cells. 相似文献
132.
133.
Bone-marrow repopulation has been followed as a function of time after a single whole-body dose of 150 rads X-rays to (C3H × C57B1)F1 hybrid mice. The number of nucleated cells per bone shaft has been estimated by direct counting and the number of progenitor cells by the exogenous spleen-colony assay method. Vinblastine was also administered under various schedules of time and dose in an endeavour to distinguish between cycling and dormant cells in the progenitor pool. The depopulation of total marrow cells induced by Vinblastine proceeds at a comparable rate in irradiated and in normal mice. On the other hand, the depopulation of the colony-formers is faster in irradiated than in normal animals. The data are interpreted to show that the fraction of cycling progenitor cells is larger in a haemopoietic tissue undergoing numerical expansion. 相似文献
134.
Αpostolos Vlyssides Elli Maria Barampouti Sofia Mai Michael Loizides 《Biodegradation》2010,21(6):957-965
Co-composting of the solid residues and wastewater from the olive oil production process was examined as a potential bioremediation
treatment for these wastes. Experimental results from a semi batch laboratory pilot plant were reported. Composting was performed
for 20 days under constant moisture 40% and the temperature ranged from 55 to 72°C and the oxygen partial pressure from 10
to 17%. An operational region of temperature and oxygen partial pressure was defined in order to achieve a ratio of total
olive mill wastewater consumption to olive stone wooden residue stabilization equal or greater than 2.5, the typical ratio
for an olive mill plant. Another critical parameter for the optimisation of the 20-day co-composting process that was examined
was the biological efficiency of the process, as the carbon dioxide produced to the total carbon available to biomass. A strong
sigmoid correlation of co-composting efficiency with temperature derived, reaching a maximum plateau of 0.50 at 68°C. The
optimum conditions for a 20-day semi batch co-composting proved to be 68°C and 16–17% oxygen partial pressure, indicating
that this process could be an integrated treatment scheme for olive mills. 相似文献
135.