Publications by authors named "N S More"
Article Synopsis
- Brown dwarf companions to stars help us understand planet formation processes, but some of them are more massive than expected based on their luminosities and host star ages.
- Gliese 229 B, previously thought to be a single entity, was revealed through observations to actually be two brown dwarfs, Gliese 229 Ba and Bb, with masses of 38.1 and 34.4 Jupiter masses, respectively.
- This discovery challenges existing theories and raises questions about the formation and occurrence of binary brown dwarfs in close orbits around stars.
Article Synopsis
- - The text discusses new, safer methods for synthesizing urea derivatives, polyureas, and poly(urea-urethanes), which traditionally rely on toxic materials like isocyanates and phosgene gas.
- - Researchers have developed a synthesis method using a ruthenium pincer catalyst, where urea derivatives and polyureas are produced from the self-coupling of formamides and diformamides, while poly(urea-urethanes) come from coupling diformamides and diols.
- - This innovative approach eliminates harmful gases (CO and H) and introduces new mechanistic insights into the decarbonylation of formamides, supported by experimental and DFT computational
Intervertebral disc (IVD) degeneration is a leading cause of lower back pain (LBP). Current treatments primarily address symptoms without halting the degenerative process. Cell transplantation offers a promising approach for early-stage IVD degeneration, but challenges such as cell viability, retention, and harsh host environments limit its efficacy.
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- Researchers explored how adding sulfur to propargylic carboxylates affects gold-catalyzed reactions involving alkynes.
- These reactions lead to the creation of functionalized indole products under mild conditions using a regiodivergent approach.
- Selective carboxylate migrations (both 1,2 and 1,3) were achieved, with indole attaching in a 1,4 position relative to the sulfenyl group, influenced by factors like the catalyst system and counterion.