Background. One of the problems with composite resin restorations is gap formation at resin‒tooth interface. The present study evaluated the effect of preheating cycles of silorane- and dimethacrylate-based composite resins on gap formation at the gingival margins of Class V restorations. Methods. In this in vitro study, standard Class V cavities were prepared on the buccal surfaces of 48 bovin...

We compute the precise elementary/composite field content of mass eigenstates in holographic duals of warped models in a slice of AdS5. This is accomplished by decomposing the bulk fields not in the usual Kaluza-Klein basis, but rather into a holographic basis of 4D fields, corresponding to purely elementary source or CFT composite fields. Generically, this decomposition yields kinetic and mass...

t Thee aim of this study is to investigate three mechanical models to describe thee viscoelastic behavior of a commercially available light-activated restorative compositee during setting. Stress-strain data on Z100 were recorded by a dynamicc test method performed on a universal testing machine. The models weree tested by matching the model response to experimental data and the materiall param...

Transconductors are commonly used as active elements in high-frequency (HF) filters, amplifiers, mixers, and oscillators. This paper reviews transconductor design by focusing on the V-I kernel that determines the key transconductor properties. Based on bandwidth considerations, simple V-I kernels with few or no internal nodes are preferred. In a systematic way, virtually all simple kernels publ...