Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Ya Wei Dong"'
Publikováno v:
Frontiers in Pediatrics, Vol 10 (2023)
BackgroundThe incidence of magnet ingestion by children has recently increased in China. Magnet ingestion is associated with an extremely high risk of gastrointestinal damage because loops of bowel can become trapped and squeezed between multiple mag
Externí odkaz:
https://doaj.org/article/40bb3f8228a04689ba55968fa0213729
Publikováno v:
Tongxin xuebao, Vol 38, Pp 32-38 (2017)
With location-based services worldwide used,private location data appealed easily in query process which caused serious security problems.So the introduction of SpaceTwist incremental nearest neighbor query algorithm,proposes protection of privacy me
Externí odkaz:
https://doaj.org/article/3bf8b9cf16514bacb8f40a9cac077e18
Co-carbonization of brominated petroleum pitch, coal tar pitch and benzoyl chloride to prepare cokes
Publikováno v:
New Carbon Materials. 34:258-266
After the quinoline insoluble fraction was removed, petroleum pitch (PP) was brominated under ultraviolet light irradiation for 3 to 9 h with a bromine to PP mass ratio of 1:20 to prepare brominated PPs (BPPs). Synthetic pitches (SPs) were produced f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50aec0b16479eac392779f772a54b722
https://doi.org/10.1016/s1872-5805(19)60015-6
https://doi.org/10.1016/s1872-5805(19)60015-6
Publikováno v:
Fuel Processing Technology. 129:61-66
Benzoyl chloride (BC) is used as both a modifier and a catalyst to successfully modify coal tar pitch (CTP). The char structure formed by the modified coal tar pitch (MCTP) was investigated in this study, and the results showed that the softening poi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02979fb8421c4b496fdf7d1edffc0290
https://doi.org/10.1016/j.fuproc.2014.08.017
https://doi.org/10.1016/j.fuproc.2014.08.017
Publikováno v:
Carbon. 130:845
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::180751413b6b967f990290d9705351c4
https://doi.org/10.1016/j.carbon.2017.10.060
https://doi.org/10.1016/j.carbon.2017.10.060
Publikováno v:
Tetrahedron. 64:10148-10154
Under solvent-free ball-milling conditions, the nucleophilic addition reactions of terminal alkynes to carbonyl compounds promoted by KOH proceeded efficiently at ambient temperature. Subsequent cyclization reactions of the synthesized propargylic al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0d76666deaa12d10b3ad86142edbfdb
https://doi.org/10.1016/j.tet.2008.08.047
https://doi.org/10.1016/j.tet.2008.08.047
Publikováno v:
Tetrahedron Letters. 47:1059-1063
An environmentally friendly and highly efficient procedure for the preparation of substituted quinoline derivatives was developed by a simple Friedlander reaction of 2-aminoarylketone or 2-aminoarylaldehyde with carbonyl compounds in the presence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61fd5f2e6f7867bd8e0976f919779e21
https://doi.org/10.1016/j.tetlet.2005.12.053
https://doi.org/10.1016/j.tetlet.2005.12.053
Publikováno v:
Synlett. :61-64
Under the high-speed vibration milling conditions, K 2 CO 3 was found to be a very efficient catalyst for the solvent-free Michael reactions of 1,3-dicarbonyl compounds with chalcones and azachalcones. In most cases, conventional side reactions were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::703397850cb638365c9d7706a36b2151
https://doi.org/10.1055/s-2003-43350
https://doi.org/10.1055/s-2003-43350
Publikováno v:
ChemInform. 40
Under solvent-free ball-milling conditions, the nucleophilic addition reactions of terminal alkynes to carbonyl compounds promoted by KOH proceeded efficiently at ambient temperature. Subsequent cyclization reactions of the synthesized propargylic al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::094610f450f8a35217bf1729254b8014
https://doi.org/10.1002/chin.200911144
https://doi.org/10.1002/chin.200911144
Publikováno v:
ChemInform. 40
Under solvent-free ball-milling conditions, manganese(III) acetate dihydrate-mediated cycloadditions of 5,5-dimethyl-1,3-cyclohexanedione and 1,3-cyclohexanedione to various 1-(pyridin-2-yl)-enones proceeded efficiently to afford trans-2-acyl-3-aryl/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4fc945428b4447d74a40cd7348c4c70
https://doi.org/10.1002/chin.200904096
https://doi.org/10.1002/chin.200904096