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For example, it converts thioethers into sulfoxides and sulfones. [16] Another use of sodium perborate in organic synthesis is as a convenient alternative to H 2 O 2, for example in the 2 step conversion of an aryl halide to a phenol (the first step is a Miyaura borylation). [17] Oxidation of Boronate with sodium perborate
In literary interpretation, paratext is material that surrounds a published main text (e.g., the story, non-fiction description, poems, etc.) supplied by the authors ...
In the latter experiment, two photomultiplier tubes, separated by a few meters, were aimed at the star using crude telescopes, and a correlation was observed between the two fluctuating intensities. Just as in the radio studies, the correlation dropped away as they increased the separation (though over meters, instead of kilometers), and they ...
Laboratory methods and techniques, as used in fields like biology, biochemistry, biophysics, chemistry, molecular biology, etc. Wikimedia Commons has media related to Laboratory techniques . Contents
Pb 2+ + H 2 S → PbS↓ + 2 H + This reaction is used in qualitative inorganic analysis. The presence of hydrogen sulfide or sulfide ions may be tested using "lead acetate paper." Like the related materials PbSe and PbTe, PbS is a semiconductor. [9] In fact, lead sulfide was one of the earliest materials to be used as a semiconductor. [10]
PBS Digital Studios is a non-profit organization through which PBS distributes original educational web video content. Based in Arlington, Virginia , it comprises both original series and partnerships with existing YouTube channels.
This reaction is rapid and stoichiometric, with the addition of one mole of thiol releasing one mole of TNB. The TNB 2− is quantified in a spectrophotometer by measuring the absorbance of visible light at 412 nm, using an extinction coefficient of 14,150 M −1 cm −1 for dilute buffer solutions, [4] [5] and a coefficient of 13,700 M −1 cm −1 for high salt concentrations, such as 6 M ...
TGA – Thermogravimetric analysis; TIKA – Transmitting ion kinetic analysis; TIMS – Thermal ionization mass spectrometry; TIRFM – Total internal reflection fluorescence microscopy; TLS – Photothermal lens spectroscopy, a type of photothermal spectroscopy; TMA – Thermomechanical analysis; TOF-MS – Time-of-flight mass spectrometry