Results 171 to 180 of about 9,509 (221)
Some of the next articles are maybe not open access.
Applied Physics A Solids and Surfaces, 1992
Semicarbazide hydrochloride (SEM.HCl) was reported to be a prototype of another possible family of ferroelectrics [Appl. Phys. Lett. 20, 49 (1972)]. The present dielectric, resistivity, thermal and infrared absorption studies carried out on SEM.HCl and SEM.HBr do not confirm this suggestion.
Srinivasan, MR, Bhat, HL, Narayanan, PS
openaire +1 more source
Semicarbazide hydrochloride (SEM.HCl) was reported to be a prototype of another possible family of ferroelectrics [Appl. Phys. Lett. 20, 49 (1972)]. The present dielectric, resistivity, thermal and infrared absorption studies carried out on SEM.HCl and SEM.HBr do not confirm this suggestion.
Srinivasan, MR, Bhat, HL, Narayanan, PS
openaire +1 more source
Potentiation of the Action of Histamine by Semicarbazide
Nature, 1951ZELLER1 has shown that semicarbazide inhibits histaminase. We have found that this substance, added to Tyrode solution, potentiates the action of histamine on the guinea pig's ileum. The lowest concentration at which semicarbazide clearly potentiates histamine is of the order of 10−9.
J L, MONGAR, H O, SCHILD
openaire +2 more sources
Recueil des Travaux Chimiques des Pays-Bas, 1943
AbstractSemicarbazide is the common but incorrect name for carbamic acid hydrazide: magnified imageThe atom are numbered as indicated.Semicarbazide reacts readily with aldehydes and ketones, and this reaction is often used to separate those compounds from mixtures or to identify them.
openaire +1 more source
AbstractSemicarbazide is the common but incorrect name for carbamic acid hydrazide: magnified imageThe atom are numbered as indicated.Semicarbazide reacts readily with aldehydes and ketones, and this reaction is often used to separate those compounds from mixtures or to identify them.
openaire +1 more source
Komplexverbindungen der Semicarbazide
Zeitschrift für anorganische und allgemeine Chemie, 1936AbstractDie Semicarbazide bilden Komplexverbindungen, in welchen sie zwei Koordinationsstellen besetzen. Das Metall ist an das Sauerstoffatom und die Hydrazingruppe gebunden. Von Nickel wurden außer Verbindungen von den Typen [NiSem2] und [NiSem3]X3 auch rote, innerkomplexe Verbindungen erhalten, welche sich von dem Semicarbazid durch Ersatz eines ...
K. A. Jensen, E. Rancke‐Madsen
openaire +1 more source
Synthesis and cyclisation of 1,4-disubstituted semicarbazides
Natural Product Research, 2010Semicarbazides, besides possessing medicinal properties, also find wide applications in agriculture and industry. We report in this article the synthesis of the four 1,4-disubstituted semicarbazides: 1-cinnamoyl-4-phenyl semicarbazide (1), 1-oleyl-4-phenyl semicarbazides (2), 1,1',1''-tricitryl-4,4',4''-triphenyl semicarbazide (3) and 1-benzoyl-4 ...
Syeda Farina Asghar +3 more
openaire +2 more sources
Menthone Semicarbazides and Thiosemicarbazides as Anticonvulsant Agents
Medicinal Chemistry, 2010A series of novel (+/-) 3-menthone semi carbazides (1-7) and thiosemicarbazides synthesized using an appropriate synthetic route and characterized by thin layer chromatography and spectral analysis. The anticonvulsant activity of synthesized compounds was established after intraperitoneal administration in three seizure models in mice which include ...
Jainendra, Jain +3 more
openaire +2 more sources
A New Ferroelectric: Semicarbazide Hydrochloride
Applied Physics Letters, 1972Dielectric measurements on a single crystal of semicarbazide hydrochloride show three maxima at temperatures of −230, 19, and 21 °C. Initial data for the highest peak clearly suggest a ferroelectric-paraelectric transition with a Curie temperature of 21 °C. In the paraelectric region the Curie law is well followed.
J.-C. Rocaries, P. Boldrini
openaire +1 more source
1951
1. Mesityl urea has been prepared and used for the successful preparation of mesityl-semicarbazide. 2. A number of aldehydes and ketones have been characterised with mesityl-semicarbozide. 3. An examination has been made of the effect of basicity of certain primary amines on their reactivity with nitrourea. 4.
openaire +2 more sources
1. Mesityl urea has been prepared and used for the successful preparation of mesityl-semicarbazide. 2. A number of aldehydes and ketones have been characterised with mesityl-semicarbozide. 3. An examination has been made of the effect of basicity of certain primary amines on their reactivity with nitrourea. 4.
openaire +2 more sources
Natural occurrence of semicarbazide in heather honey
Food Additives & Contaminants: Part ARegulatory bodies aim to protect consumers from harmful substances. The use of certain antibiotics is prohibited in food-producing animals in the EU due to their potential detrimental effects on humans. Among these are nitrofuran antibiotics, which degrade rapidly so that their metabolites are used as markers in screening for their illegal use. The use
Linn Fenna Groeneveld +5 more
openaire +2 more sources
Acidity of polyurethane semicarbazide in dimethylformamide
Polymer Science U.S.S.R., 1989Abstract Acidity in dimethylformamide of two modifications of polyurethane semicarbazide and of corresponding model compounds was studied by potentiometric titration. The characteristic dissociation constants p K 0 of the polymers were calculated. The temperature dependence of p K 0 was measured between 298 and 358 K.
N.F. Babchenko +2 more
openaire +1 more source