نتایج جستجو برای: 254 ق
تعداد نتایج: 10044 فیلتر نتایج به سال:
The glass transition temperatures of AgPO3 have been reported to lie in the 163 Tg 192 °C range. These results are typical when precursors are processed at laboratory ambient. In the present work, we show that if precursors are handled in a dry ambient environment, the Tg’s steadily increase in the 181 2 Tg 254 2 °C range as the relative humidity of the ambient environment decreases. The glass ...
This study examined the impact of UV, ozone (O(3)), advanced oxidation processes (AOPs) including O(3)/UV, H(2)O(2)/UV H(2)O(2)/O(3) in the change of molecular weight distribution (MWD) and disinfection by-product formation potential (DBPFP). Bench-scale experiments were conducted with surface river water and changes in the UV absorbance at 254 nm (UV(254)), total organic carbon (TOC), trihalom...
Las multinacionales son empresas que desempeñan una parte variable de su actividad fuera las fronteras los países en tienen sus sedes centrales. Están formadas por filiales, subsidiarias o asociadas dispersas el globo terráqueo. El objetivo este artículo es recoger ejes centrales del debate torno a relaciones existentes entre la casa madre y segundo grupo. En sentido, se pone énfasis cuestión t...
The performance of ozonation in wastewater depends on water quality and the ability to form hydroxyl radicals (·OH) to meet disinfection or contaminant transformation objectives. Since there are no on-line methods to assess ozone and ·OH exposure in wastewater, many agencies are now embracing indicator frameworks and surrogate monitoring for regulatory compliance. Two of the most promising surr...
The evidence that proteasomes are involved in the processing of cross-presented proteins is indirect and based on the in vitro use of proteasome inhibitors. It remains, therefore, unclear whether cross-presentation of MHC class I peptide epitopes can occur entirely within phagolysosomes or whether it requires proteasome degradation. To address this question, we studied in vivo cross-presentatio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید