The aim of this study was to compare the influence a final rinse with and without passive ultrasonic irrigation (PUI), using 17% ethylenediaminetetraacetic acid (EDTA) or 10% citric (CA), 2.5% sodium hypochlorite (NaOCl) PUI, on sealing ability root canal fillings. Root instrumentation performed in single-rooted premolars NaOCl as irrigant. Subsequently, roots were randomly allocated into four ...

Through the esterification of cellulose (Cell) with ethylenediaminetetraacetic dianhydride, acid-functionalized (Cell-EDTA) was conveniently obtained. Furtherly a novel and efficient Cell-EDTA-supported palladium catalyst (Pd@Cell-EDTA) easily prepared via coordination Cell-EDTA PdCl2. The as-prepared Pd@Cell-EDTA fully characterized by inductively coupled plasma atomic emission spectrometry, X...

A practical synthesis of 1-bromo-2-amino-3-butene derivatives from homoallylic trichloroacetimidates was reported. Simply heating the mixture of substrates and N-bromoacetamide in DMF at 90 °C would give the desired products in moderate to excellent yields. The reaction may proceed through a domino bromo-cyclization and elimination pathway. The synthesis of 4,5-dihydrooxazoles from 1-bromo-2-am...

We performed ultrafast pump-probe spectroscopy of J-aggregates of 3,3'-disulfopropyl-5,5'-dichloro-9-ethyl thiacarbocyanine triethylammonium (THIATS), one of the most typical cyanine dyes, and detected excited molecular vibrations, using a sub-10 fs pulse laser. The time-resolved two-dimensional difference absorption (ΔA) spectra are observed between -314 and 1267 fs. By performing the Fourier ...