The singular perturbation approach has been shown to be successful in controlling both  exible link manipulators and  exible joint manipulators. In this paper, the technique is extended to control both link and joint  exibility of a multilink manipulator simultaneously while a desired trajectory is being tracked. A comprehensive, closed-form, Euler–Lagrange, assumed-mode model of a multilink...

OBJECTIVES The aim of this study was to evaluate bond strengths of zirconium-oxide (zirconia) ceramic and a selection of different composite resin cements. STUDY DESIGN 130 Lava TM cylinders were fabricated. The cylinders were sandblasted with 80 µm aluminium oxide or silica coated with CoJet Sand. Silane, and bonding agent and/or Clearfil Ceramic Primer were applied. One hundred thirty compo...

PURPOSE To investigate the void parameters within the resin cements used for fiber post cementation by micro-CT (µCT) and regional push-out bonding strength. MATERIALS AND METHODS Twenty-one, single and round shaped roots were enlarged with a low-speed drill following by endodontic treatment. The roots were divided into three groups (n=7) and fiber posts were cemented with Maxcem Elite, Multi...

OBJECTIVE The purpose of this study was to evaluate the influence of Er:YAG laser irradiation on shear-bond strength of self-adhesive resin cements to dentin. BACKGROUND DATA Different laser-irradiation settings are used for dentin-surface pretreatment, which may affect the bond strength of resins. METHODS Fourty-five extracted third molars were selected, sectioned in a mesiodistal directio...

The Internet is experiencing a change in paradigm: Once determined by text-based applications, currently, various types of audio-visual content already adopt the major part of the bandwidth. Audio-visual applications and multimedia data impose individual demands on reliability and delivery time, which is not sufficiently covered by available transport protocols. In addition, a more efficient us...

although acrometastases are rare but clinically they are considered important. their etiology is quite different from the metastases to other sites; bronchogenic carcinoma is by far the most frequent case. the prognosis is always similar to metastatic bronchial cancer with an average survival of three months. treatment may involve distal digital amputation or antalgic radiotherapy. the main dif...