objective: administration of amoxicillin and metronidazole along with scaling and root planning (srp) is an effective adjunctive therapy for chronic periodontitis. studies have shown that administration of azithromycin is also effective for treatment of chronic periodontitis. this study aimed to compare the effect of short-term and long-term azithromycin regimen with amoxicillin and metronidazo...

Long term tensile creep studies were conducted on binary NiAl in the temperature range 700-1200 K with the objectives of characterizing and understanding the creep mechanisms. Inverse and normal primary creep curves were observed depending on stress and temperature. It is concluded that the primary creep of NiAl is limited by dislocation mobility. The stress exponent for creep, n, decreased fro...

The time dependence of the physical properties of ethylene/1-octene (EO)-copolymers after primary crystallization is investigated by calorimetry, density, and creep measurements. The temporal evolution of the multiple melting of EO-copolymers is monitored by differential scanning calorimetry. The low temperature endotherm displays an evolution similar to that observed for the enthalpy recovery ...

Commercial, aluminum die-cast alloys are subject to long-term stresses leading to viscoelastic material responses resulting in inefficient engine operation and failure. Constant load creep tests were conducted on aluminum die-casting alloys: B-390, eutectic Al-Si and a 17% Si-Al alloys. Rupture occurred in the primary creep regime, with the eutectic alloy having the longest times to failure. Pr...

A number of studies have indicated that the tension-stiffening law is an important input parameter in a numerical analysis of serviceability (deformations and cracking) problems of reinforced concrete (RC) structures. The stochastic nature of concrete cracking, which results in a large scatter of experimental results, renders the constitutive modeling a very difficult task. Even data obtained f...

Creep is a time-dependent viscoelastic deformation observed under a constant prolonged load. It has been indicated that progressive vertebral deformation due to creep may increase the risk of vertebral fracture in the long-term. The objective of this study was to examine the relationships of creep with trabecular architecture and tissue mineral density (TMD) parameters in human vertebral cancel...

2) It is not true that determination of the "final" creep value from the plot of I/C versus I/~ gives too little weight to the long time creep data and too much weight to the short-time creep data. The opposite appears to be true. The y-intercept (i.e., point_i/~ ÷ 0) is very close (in the horizontal direction) to the points for high t (Fig. 4) and is, therefore, influenced by an error, e I, at...

Transient creep may play an important role in short-term (small strain) time-dependent deformation such as the post-glacial rebound and post-seismic deformation. Among various mechanisms of transient creep, I focus on inter-granular dislocation caused by plastic anisotropy each grain. The essence this process is evolution strain accommodation across grain-boundaries from elastic to (viscous) ac...