Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Ioan Oprean"'
Autor:
VIRGIL, CANDALE1 virgilcandale@yahoo.com, IOAN, OPREAN MARIUS1 mariusioan.oprean@ulbsibiu.ro, ANDREEA, OCOLIȘANU2 aocolisanua@gmail.com
Publikováno v:
Annals of 'Constantin Brancusi' University of Targu-Jiu. Economy Series / Analele Universităţii 'Constantin Brâncuşi' din Târgu-Jiu Seria Economie. 2024, Issue 2, p144-151. 8p.
Publikováno v:
Revista de Chimie. 69:1315-1318
New and practical synthesis of (E)-11-tetradecen-1-yl acetate and (Z)-11-hexadecen-1-yl acetate were developed. The synthesis were based on a C12+C2=C14 and C12+C4=C16 coupling scheme. The routes involve, as the key step, the use of the same mercury
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5005b36b413c62ba3743d69e2329d44e
https://doi.org/10.37358/rc.18.6.6317
https://doi.org/10.37358/rc.18.6.6317
Publikováno v:
Revista de Chimie. 68:180-185
Were developed new and practical synthesis of (Z)-7-dodecene-1-yl acetate and (E)-9-dodecene-1-yl acetate. The routes involve, as the key step, the use of the mercury derivative of the terminal-alkyne w-functionalised as intermediate. The synthesis o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e217464166fc6795f7e3fba488fcdea9
https://doi.org/10.37358/rc.17.1.5415
https://doi.org/10.37358/rc.17.1.5415
Publikováno v:
Revista de Chimie. 68:157-162
New and practical synthesis of (Z)-8-dodecene-1-yl acetate and (E)-8-dodecene-1-yl acetate were developed. The synthesis were based on a C3+C6=C9 and C9+C3=C12 coupling scheme, the starting material being 2-propyn-1-ol and 1,6-hexandiol. The routes i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f81adb55782c253a66e17e3e26e946a2
https://doi.org/10.37358/rc.17.1.5410
https://doi.org/10.37358/rc.17.1.5410
Publikováno v:
Water Science and Technology. 74:1726-1735
In this study, analysis of variance (ANOVA), cluster analysis (CA) and principal component analysis (PCA) were employed in order to evaluate the concentration profile of organic contaminants found in three main river from central Transylvania, Romani
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::131158f8245f1a94cc0d34b78e981307
https://doi.org/10.2166/wst.2016.351
https://doi.org/10.2166/wst.2016.351
Autor:
Ioan Oprean, Laura Macavei, Viorel Mitre, Aurelia Pop, Teodora Florian, Iuliana Vasian, Ion Oltean
Publikováno v:
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture. 72
Rhagoletis cerasi L. is considered to be the main pest of sweet cherry and sour cherry plantations , whose attack may decrease the quality of fruits in a high percentage. The experiment took place in two locations fromÂ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50b324453d8150490dfa1115ebfa61ed
https://doi.org/10.15835/buasvmcn-agr:10612
https://doi.org/10.15835/buasvmcn-agr:10612
Autor:
Aurelia Pop, Viorel Mitre, Mircea Varga, Ioan Oprean, Iuliana Vasian, Laura Macavei, Ion Oltean, Teodora Florian
Publikováno v:
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture. 70:107-109
The European cherry fruit fly, Rhagoletis cerasi (L.) (Diptera: Tephritidae), is one of the most destructive pest in cherry and sweet cherry orchards. Because of the low tolerance for damaged fruit on the market and the restrictions from E.U rega
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c45250056081328b2fc52a24d2c24c0
https://doi.org/10.15835/buasvmcn-agr:9688
https://doi.org/10.15835/buasvmcn-agr:9688
Publikováno v:
Open Chemistry, Vol 2, Iss 1, Pp 214-219 (2004)
The synthesis of aldehydes and ketones by the dehydrogenation of allylic and secondary alcohols using a Raney-Ni-Al(i-OPr)3-Al2O3 catalyst without hydrogen acceptors is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef9590146bdc4277701f9d4ca601b9de
https://doi.org/10.2478/bf02476191
https://doi.org/10.2478/bf02476191
Publikováno v:
Journal of Analytical and Applied Pyrolysis. 53:161-176
Pyrolysis of 5H-dibenzo[a,d]cyclohepten-5-one oxime (8) and 10,11-dihydro-5H-dibenzo-[a,d]cyclohepten-5-one oxime (9) in a flow system (at 1.33 mbar and 650°C) were examined comparatively with pyrolysis of benzophenone oxime (1a) using GC/MS. The py
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af445a0f2630b0f0a36c0a7e2b19115f
https://doi.org/10.1016/s0165-2370(99)00061-3
https://doi.org/10.1016/s0165-2370(99)00061-3
Autor:
I. Gogoasa, Cristian Tigae, Olivia-Florena Mărutoiu, Maria-Ioana Moise, Ioan Oprean, Constantin Marutoiu, Maria Rada
Publikováno v:
Journal of Planar Chromatography – Modern TLC. 19:250-252
Conventional extraction of piperine and its derivatives by stirring the black pepper powder with solvents (ethyl alcohol, chloroform, petroleum ether, diethyl ether, etc.) for 16 to 24 h, or in a Soxhlet device for 16 h, can be replaced by extraction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcbacab37634e2b51267f87966663dd3
https://doi.org/10.1556/jpc.19.2006.3.16
https://doi.org/10.1556/jpc.19.2006.3.16