نتایج جستجو برای: lated devonian
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members of the family laccophyllidae are small, solitary rugose corals with stratigraphic ranges from silurian to permian. among the laccophyllids, axial ends of major septa are united in an aulos and dissepiments may be absent or present. minor septa can be contratingent and sometimes are small or in some genera are absent. septa and aulos may be thick or thin. in this study, famennian rugose ...
The zonal scheme of the Givetian-Frasnian boundary interval in Timan-Northern Urals region was detailed according to higher plants spores. Palynological zones were correlated with faunal, including conodont — orthostratigraphic group Devonian. correlation identified critical boundaries development plant communities divisions’ borders International Stratigraphic Scale series and stages, establis...
Sci en tists an a lyzed tem po ral vari a tions of lo cal data re corded in Tai wan and re ported anom a lous re duc tions in the ion o spheric to tal elec tron con tent (TEC) on days 4 and 3 be fore (17 and 18 Sep tem ber) the Chi-Chi earth quake (Mw 7.6, ML 7.3), and days 3 and 1 prior to (19 and 21 Oc to ber) the Chia-Yi earth quake (ML 6.4) in Tai wan. In this pa per, we pro pose a spa tial...
Purpose: To assess the feasibility of administering camptothecin (CPT), the prototypic topoisomerase I inhibitor, as polyethylene glycol (PEG)-CPT, a macromolecule consisting of CPT conjugated to chemically modified PEG. The study also sought to determine the maximum-tolerated dose (MTD) of PEG-CPT, characterize its pharmacokinetic behavior, and seek preliminary evidence of anticancer activity....
lt is widely believed that embryos and infants during devetopment are highly sensitiye to chemicals that cause serious damage to growth. However, knowledge on the mechanisms of developmenta1 toxicity is scarce. One reason for this is limited convenient model system other than organ cultures using rodents to study the various aspects of developmentat toxicology. Cuttured cells are not always ade...
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