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The response of human premolars to cyclic loading (1997)

ĆTOVIĆ, A. ; KRALJEVIĆ, K. ; JEROLIMOV, V. ; [et al.]

Oxford, UK : Blackwell Publishing Ltd

Journal of oral rehabilitation 24 (1997), S. 0

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ISSN: 1365-2842

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Medicine

Notes: summary The aim of the study was to obtain data on the dynamic strength of both intact and prepared premolars for partial veneer crowns. Cyclic loading was performed in a modified Amslers high-frequency pulsator with varying force (between 400 and 1400 N). The greatest dynamic strength was exhibited by the intact samples. The greater the load the fewer the cycles necessary to fracture the tooth. A stastically significant difference was found (P 〈 0.05) between the magnitude of cyclic loads and the different types of specimens tested.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1365-2842.1997.tb00334.x

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The effect of supporting electrolyte on the electrochemical synthesis, morphology, and conductivity of polyaniline (1994)

Duić, L J. ; Mandić, Z. ; Kovačiček, F.

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 32 (1994), S. 105-111

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ISSN: 0887-624X

Keywords: polyaniline ; conducting polymers ; morphology ; conductivity ; Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Electrochemical synthesis of polyaniline (PANI) was carried out under cyclovoltammetric conditions using H2SO4, HCl, HNO3, and HClO4 as supporting electrolytes. The observed different rate of PANI deposit growth depending on the acid in the solution has been explained on the grounds of a different degree of specific adsorption for particular anion. It has been found that morphology of the deposit depends greatly upon the anion present in the solution. Thus, PANI synthesized from the solution of oxyacids results in a dense sponge-like structure while PANI from the hydrochloric acid solution results in a spaghetti-like structure. The structure of the deposit influences the conductivity, being higher for a dense deposit from oxyacid solutions and three orders of magnitude lower in case of a deposit from hydrochloric acid solution. © 1994 John Wiley & Sons, Inc.

Additional Material: 5 Ill.