Results 81 to 90 of about 2,557 (167)

Binding properties of coumarin phthalonitrile derivatives in methanol [PDF]

open access: yes, 2015
The complexation properties of coumarin phthalonitrile derivatives 1-3, towards some transition, heavy and lanthanide metal cations have been investigated in methanol by means of UV spectrophotometry and conductivity experiments.
Baklouti, Lassaad   +4 more
core   +1 more source

ISMS Taler [PDF]

open access: yes, 2000
Nailer Later saw cheating na retax fro het Shingle stunted, ta Alined Bestrew Cholos.
Webster, William
core   +1 more source

Ethylaminium picrate

open access: yesActa Crystallographica Section E Structure Reports Online, 2005
In the title salt, C2H8N+·C6H2N3O7−, there is complete transfer of the OH proton from picric acid to the amine. The picrate anions lie almost parallel to the monoclinic (101) plane and are connected by O⋯O short contacts. The ethyl­aminium and picrate ions are linked through N—H⋯O and C—H⋯O hydrogen bonds along the crystallographic b axis.
Muthamizhchelvan, C.   +5 more
openaire   +2 more sources

Электролиты для химических источников тока на основе ионных жидкостей: растворы бромида 1-бутил-3-метилимидазолия в ацетонитриле [PDF]

open access: yes, 2009
Представлены результаты кондуктометрического исследования бромида 1-бутил-3-метил- имидазолия (BMIMBr) в ацетонитриле в интервале температур 5–55ºС.
Ворошилова, Ю.В.   +2 more
core  

Non-aqueous solvent electrochemical systems [PDF]

open access: yes, 1958
"November 1, 1958.""Reprinted from Proceedings of Eleventh Annual Battery Research and Development Conference, Power Sources Division, United States Army Signal Engineering Laboratories Fort Monmouth, New Jersey, May 22-23, 1957.""A considerable amount ...
Arcand, G. Myron, Tudor, James R.
core  

Synthesis and UV-Visible complexation study of 1-pyrazolylbenzimidazol-2-one polyether macrocyclic derivatives [PDF]

open access: yes, 2015
A new polyether macrocyclic of 1-pyrazolylbenzimidazol-2-ones 5-6 have been synthesized by the reaction of dichloro(poly)ethylene glycol in phase transfer catalysis conditions.The structure of these compounds were identified by 1H NMR, 13C NMR, IR ...
Ahabchane, Noureddine Hamou   +3 more
core   +2 more sources

Dissociation behaviour of humic acids [PDF]

open access: yes, 2015
Huminové látky jsou látky přírodního původu a tvoří nejkvalitnější složku huminových látek. Vznikají biochemickými přeměnami organických zbytků (převážně rostlinných).
Karbanová, Kateřina
core  

A review on biological and chemical diversity in Berberis (Berberidaceae) [PDF]

open access: yes, 2015
Berberis is an important genus and well known in the Indian as well as European systems of traditional medicine. It is used since ancient times for curing eye disease, fever, jaundice, rheumatism, vomiting during pregnancy, kidney and gall balder stones ...
Misra, Ankita   +4 more
core  

Solubility and dissociation of humic acids [PDF]

open access: yes, 2010
Chování huminových kyselin ve vodných roztocích úzce souvisí s obsahem kyselých funkčních skupin a jejich disociačními schopnostmi. Pro studium acido-bazických vlastností huminových kyselin jsou nejčastěji využívány titrační metody, jejichž výsledky by ...
Kratochvílová, Romana
core  

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