Institute of Organic Chemistry, Clausthal University of Technology, Leibnizstraße 6, 38678 Clausthal-Zellerfeld, Germany ...

Column chromatography was carried out on silica gel (200-300 mesh). Thin layer chromatography (TLC) was performed using silica gel 60 F plates. 1 H NMR and 13 C NMR spectra were measured on an AV-600 ...

National Institute of Clean-and-Low-Carbon Energy, Beijing 102209, China ...

Figure 1. Structure of some nonsteroidal aromatase inhibitors (I-V).

The compounds were identified using mass spectrometry and nuclear magnetic resonance (NMR) techniques (Li et al., 2017). A comparative analysis was conducted to investigate the structures of the ...

Nuclear magnetic resonance (NMR) spectroscopy is a technique that detects ... showing a MAE of 2.05 ppm for 13 C and 0.165 ppm for 1 H, and achieving 95.21% concordance with experts’ assignments.

非氟化聚合物膜为氧化还原液流电池(RFB)提供了商业上可行的解决方案，但其实际应用受到固有挑战的阻碍，如化学不稳定性和低离子电导率。在这项研究中，开发了一系列无醚键的聚(芳基哌啶)膜，通过与有机酸的超分子相互作用破坏无醚聚(芳基哌啶)膜中的链堆积来解 ...

Portions of 1 g of the sunscreen UVA-UVB 5% Pemulen TR-1 gel (incorporated with the extracts or compound 4, and the sunscreen UVA-UVB 5% Pemulen TR-1 gel alone) were weighed. Subsequently, dilutions ...

In early 1967, the Army accepted its first UH-1H Huey. This was the last major Huey upgrade. It appeared identical to the UH-1D but beneath the engine cowling, Bell installed the improved Lycoming T53 ...

David finalises his plan as Sarah celebrates her birthday - when fire consumes Number Eight, the Platts go inside leaving someone trapped by the flames and fighting for survival.

F. Oliver Yang, Chair of Reid & Wise LLC and an expert in business immigration law, confirms that the recent H-1B ownership rule updates may be of little help to some foreign entrepreneurs ...