Patient Jiang, Female,25 years old, came to the clinic for irregular teeth. The case was reported as lingual tipping deep overbite with maxillary undersized lateral incisors, which patient did not accept restore malocclusion morphology by denture, resulting in selection of extraction bilateral incisors and mandibular second premolars, orthodontic treatment zirconia straight wire appliances comb...

The equipment used in collecting insects is simple and inexpensive. The average collector usually will need only a few items : Nets, killing bottles, suction bottle, tweezers, scissors, small brushes, and insect pins. Many collectors prefer to make most of their own equipment even though most items may be purchased from commercial supply companies. The insect net is essentially a cloth bag hung...

BACKGROUND The aim of this study was to investigate the corrosive behaviour of stainless steel archwires in a more clinically relevant way by bending and exposing to various pH. METHODS One hundred and twenty pieces of rectangular stainless steel wires (0.43 × 0.64 mm) were randomly assigned into four groups. In each group, there were 15 pieces of bent wires and 15 straight ones. Prior to mea...

background: sterilization techniques could affect the characteristics of orthodontic wires. the aim of the present study was to evaluate the effect of steam and dry heat sterilization techniques on load-defl ection behavior of fi ve types of β-titanium alloy wires. materials and methods: the samples consisted of 30 straight lengths of fi ve types of β-titanium alloy wires: titanium molybdenum a...

Coaxial straight-wire resistors have been constructed with the purpose of improving comparisons between resistors, capacitors, and inductors in the audio frequency range. The design is based on the principle that a coaxial line with a cylindrical shield can be described by relatively simple equationsfor the real and imaginary parts of the impedance. The resistors, with values above 100 n, will ...

We demonstrate the possibility of dynamic imaging of magnetic fields using electromagnetically induced transparency in an atomic gas. As an experimental demonstration we employ an atomic Rb gas confined in a glass cell to image the transverse magnetic field created by a long straight wire. In this arrangement, which clearly reveals the essential effect, the field of view is about 2 x 2 mm(2) an...

Suppose a hounded distribution of time-dependent sources in free space is as shown in Figure 1. The retarded electric ( ( F , t ) The primary goal ofthis paper is tutorial. It discusses, from a and magnetic A(r, t ) potentials at the observation point physical point of view, several basic features related to the transient radiation of electromagnetic waves by straight thin-wire P = P(r ,O ,q ) ...

In this paper, we present a model of straight wire dipole scatterers loaded by arbitrary lumped loads in the dipole center. These particles can be used as inclusions of custom-design composite materials or electrically controllable metamaterials. The model, together with the Clausius–Mossotti formula and an analytical model for reflection and transmission in dipole arrays, allows to find loads ...

We consider a model of a leaky quantum wire with the Hamiltonian −∆ − αδ(x − Γ) in L 2 (R 2), where Γ is a compact deformation of a straight line. The existence of wave operators is proven and the S-matrix is found for the negative part of the spectrum. Moreover, we conjecture that the scattering at negative energies becomes asymptot-ically purely one-dimensional, being determined by the local ...