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Приказ резултата 41-50 од 117
The synthesis and preliminary pharmacological evaluation of racemic cis and trans 3-alkylfentanyl analogues / Sinteza i preliminarni farmakološki testovi recemskih cis i trans 3-alkilanaloga fentanila
(Srpsko hemijsko društvo, Beograd, 2004)
A general, five step method for the synthesis of 3-alkylfentanyl analogues (i.e., cis and trans 3-alkyl-4-anilidopiperidines 6.1–6.6) has been developed. The starting N-phenethyl- 4-piperidone 1 was first converted into ...
Chemical composition and antimicrobial activity of Ambrosia artemisiifolia L. essential oil
(Taylor & Francis Inc, Philadelphia, 2004)
Chemical analysis and antimicrobial activity of essential oil isolated by steam distillation from Ambrosia artemisiifolia L., Asteraceae dried flowering herb were performed. Principal constituents were germacrene D (24.1%), ...
The effect of the particle shape and structure on the flowability of electrolytic copper powder, III: A model of the surface of a representative particle of flowing copper powder electrodeposited by reversing current / Uticaj oblika I strukture čestica na tečljivost elektrolitičkog bakarnog praha III - model površine reprezentativne čestice tečljivog bakarnog praha dobijenog elektohemijskim taloženjem reversnom strujom
(Srpsko hemijsko društvo, Beograd, 2004)
The structure of the surface of copper powder particles is discussed and correlated with the lowest apparent density at which copper powder can still flow. It is shown that such structures can be easily obtained in the ...
Antioxidant activities of the constituents of Picris echoides / Sastav i antioksidativna aktivnost Picris echoides
(Srpsko hemijsko društvo, Beograd, 2002)
Some flavonoids with antioxidant properties from the aerial parts of the plant species Picris echoides (family Asteraceae) were identified. Upon chromatography, the ethyl acetate extract afforded flavonoids, such as flavone ...
The investigation of strong active sites of dealuminated Y-type zeolite by TPD of carbon monoxide
(Springer, Dordrecht, 2003)
The active sites of hydrogen-exchanged Y zeolite (HY) and dealuminated (HDY) zeolites are investigated by TPD of carbon monoxide. Only the high temperature TPD spectra of CO (T(M)approximate to620-690degreesC) were observed, ...
Investigation of kernel oils of Quercus robur and Quercus cerris
(Springer, New York, 2004)
The kemel oils of Quercus robur and Quercus cerris were obtained by Soxhlet extraction using petroleum ether. Oil yields were found to be 5.2-5.6% and 4.3-4.8% for Q. robur and Q. cerris kemel, respectively (expressed in ...
DPR analysis of microstructural evolution of ZnO ceramics
(Trans Tech Publications Ltd, Durnten-Zurich, 2004)
It is well known that, due to their specific properties, ZnO - based materials are frequently used in electrotechnics and electronics. Since these properties are very Much dependent on the microstructural state of material ...
The effect of the particle shape and structure on the flowability of electrolytic copper powder. I. Modeling of a representative powder particle
(Srpsko hemijsko društvo, Beograd, 2003)
One of the most important properties of copper powder is its flowability which depends on the shape and the structure of the powder particles. A procedure for the determination of a representative powder particle permitting ...
Alterations in liver and kidneys of chickens fed with high levels of sodium selenite or selenized yeast / Promene na jetri i bubrezima pilića hranjenih visokim nivoima natrijum selenita ili seleniziranog kvasca
(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 2004)
The experiment was carried out with 260 chickens divided into 13 groups, for 6 weeks. All chicken groups were fed with commercial mixtures, and selenium was added in their feed in the form of sodium selenite or selenized ...
The synthesis and pharmacological evaluation of (±)-2, 3- seco-fentanyl analogues / Sinteza i farmakološko ispitivanje (±)-2,3-seco-analoga fentanila
(Srpsko hemijsko društvo, Beograd, 2004)
An efficient, five-step synthetic approach to various acyclic 1,3-diamines has been developed and applied to the preparation of a novel class of open-chained fentanyl analogues. The acyclic derivatives 5.1–5.5 (all new ...