16 research outputs found
Geologic interpretation of the aeromagnetic survey in the Agourai area (Central Morocco)
Tetra-CMPO-Derivatives of Calix[4]arenes fixed in the 1,3-Alternate Conformation
Calix[4]arene derivatives fixed in the 1,3-alternate conformation and substituted at one side by four carbamoylmethylphosphine
oxide (CMPO) residues were synthesised. Two CMPO groups are directly attached to the wide rim, while the second pair is bound to the narrow rim via a tri- or tetramethylene spacer. Similar compounds, in which two CMPO groups at the wide rim are combined with two picolinamide groups or two ionisable carboxylic groups at the narrow rim, were also prepared. Some of these calixarene derivatives were studied as extractants for lanthanides (La3Ăľ, Eu3Ăľ, Yb3Ăľ) and thorium (Th4Ăľ) from acidic solution into methylene chloride. For selected samples, stability constants in methanol were determined by spectrophotometric titrations. Three compounds (1b0, 13, 17) in the 1,3-alternate conformation and one intermediate in the cone conformation (18) were confirmed by a crystal structure
Optimum regression model and data-window on J-integral method based on hysteresis on PC/PBT blend
Lomustine is beneficial to older AML with ELN2017 adverse risk profile and intermediate karyotype: a FILO study
International audienc