منابع مشابه
Open-Coil Retraction Spring
Sliding mechanic has become a popular method for space closure with developments in preadjusted edgewise appliance. Furthermore, various space closing auxiliaries have been developed and evaluated extensively for their clinical efficiency. Their effectiveness enhanced with optimum force magnitude and low-load deflection rate (LDR)/force decay. With the advent of NiTi springs in orthodontics, LD...
متن کاملSpring coil retraction in coil occlusion of persistent ductus arteriosus.
AIMS To present the short and intermediate term results of coil occlusion of persistent ductus arteriosus and the results of radiographic measurements of spring coils implanted to treat patent ducts. PATIENTS 22 children underwent coil occlusion. Their ages ranged from 2 years 9 months to 12 years 10 months (mean (SD) age, 6.5 (3.6) years). The duct diameter ranged from 1.0 to 3.5 mm at the n...
متن کاملCalculation of SAR for Transmit Coil Arrays.
Transmit coil arrays allowing independent control of individual coil drives facilitate adjustment of the B(1) field distribution, but when the B(1) field distribution is changed the electric field and SAR distributions are also altered. This makes safety evaluation of the transmit array a challenging problem because there are potentially an infinite number of possible field distributions in the...
متن کاملInfluence of development stage of spring oilseed rape and spring
10 The dry and wet deposition of radionuclides released into the atmosphere can be 11 intercepted by vegetation in terrestrial ecosystems. The aim of this study was to quantify the 12 interception of wet deposited Cs and Sr by spring oilseed rape (Brassíca napus L.) and 13 spring wheat (Tríticum aestívum L.). The dependency of the intercepted fraction (f) on total 14 above ground plant biomass,...
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ژورنال
عنوان ژورنال: Transactions of Japan Society of Spring Engineers
سال: 1973
ISSN: 0385-6917,1348-1479
DOI: 10.5346/trbane.1973.95