نتایج جستجو برای: bending crown
تعداد نتایج: 47225 فیلتر نتایج به سال:
C. Navío,1,* M. J. Capitán,2 J. Álvarez,1 F. Yndurain,1 and R. Miranda1 1Departamento de Física de la Materia Condensada e Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain 2Instituto de Estructura de la Materia-CSIC, c/Serrano 119, 28006 Madrid, Spain Received 8 March 2007; revised manuscript received 31 May 2007; published 6 A...
ثابت های تشکیل کمپلکس 1:1 برای 18-crown-6 با یون پتاسیم در سیستمهای دو جزئی دو متیل فرمالید (dmf) - متانول (meoh)، dmf - نیتروبنزن (nb)، dmf - بنزونیتریل (bn) و برای dibenzo-24-crown-8 با یون پتاسیم در مخلوطهای دو جزئی dmf-meoh در دماهای مختلف به روش هدایت سنجی تعیین گردیدند و با استفاده از وابستگی ثابت تشکیل کمپلکسها به درجه حرارت ، مقادیر توابع ترمودینامیکی (s, h) برای واکنش کمپلکسه شدن، تعیی...
The Multi-DOF forceps manipulator we developed has two additional DOF of bending on the tip of forceps, and provides new surgical fields and techniques for surgeons. The most remarkable characteristics of the prototype described in this paper are: 1) the small diameter and the small radius of curvature of bending; 2) the confirmation of perfect cleanness and sterilization of this manipulator. I...
Plasticity in crown architecture, contributing to leaf arrangement within crown, is an important feature for whole plant carbon assimilation and survival. In this study, I examined the plasticity in crown architecture to light condition and developmental stage by the changes in shoot production. Rhododendron reticulatum expands crown with orthotropic growth in monopodial branching in young stag...
The article aims to find the buckling loads for pinned?rotationally restrained shallow circular arches in terms of rotational end stiffness, geometry and material distribution. loading is a concentrated vertical force placed at crown. A geometrically nonlinear model presented which relates not only axial but also bending moment membrane strain. load-strain relationship established between strai...
The chief goal of full coronal restoration using preformed stainless steel crowns (SSC) is replication of normal crown form and function. Marginal adaptation of SSCs involves appropriate crown size selection, trimming the crown form to achieve proper length, crimping crown edges to proximate the prepared tooth, and finishing and polishing the crown form. This report about SSC restoration focuse...
The complexation reactions between Tl+ and Pb2+ ions and crown ethers 12-crown-4(12C4), 15-crown-5 (15C5), benzo-15-crown-5 (B15C5), 18-crown-6 (18C6), dicyclohexyl-18-crown-6 (DC18C6) and aza-18-crown-6 (A18C6) were studied in 90% acetonitrile and 90% ethanol solutions at 25 °C, using an a.c. polarographic technique. The stoichiometry and stability of the complexes we...
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