Roll forming process is used for manufacturing sheet metal parts by successive bending and creating the final shape with gradual deformation. In this article, deformation of a pre-punched sheet due to the roll forming process was studied. Two main defects in the roll forming process are ovality of holes and bow defect. The ovality of the hole is influenced by the process parameters including sh...

IMPORTANCE Defects of the central upper lip present a challenge. A variety of techniques have been described, but most tend to efface the natural contours present in the philtrum and the cutaneous-mucosal vermilion border (Cupid's bow). Furthermore, the techniques typically require a second-stage procedure to improve the upper lip aesthetic. We discuss a novel technique using bilateral transpos...

median cleft is the midline cleft of the lip. it develops due to incomplete or failed fusion of the median nasal prominence. it can present with minimal deformities such as involvement of the vermilion border, or complex clefting of the midline structures and brain. median clefts are broadly classified as true and false clefts. this case report describes a rare case of median cleft of the upper...

The Two-Way Task: Run1: TAC-M, TS-M, and Tri-BM Run2: TAC-M, TS-M, and BoW-BM Run3: TAC-M, TS-M, NE-M, & Tri-BM, BoW-BM The Three-Way Task: Run1: TAC-M, TS-M, and Tri-BM, BoWBM Run2: TAC-M, TS-M, NE-M (partial), and Tri-BM, BoW-BM Run3: TAC-M, TS-M, NE-M, and Tri-BM, BoW-BM From Two-Way to Three-Way: If BoW-BM=YES & Tri-BM=NO then CONTRADICTION If BoW-BM=YES & Tri-BM=YES then ENTAILMENT Others ...

a fundamental assumption in prosthetic dentistry is that the axis-orbital plane will usually be parallel to the horizontal reference plane. most articulator systems have incorporated this concept into their designs and use orbitale as the anterior reference point for transferring the vertical position of the maxilla to the articulator. clinical observations of cantonese patients suggest that in...

o bjectives: this study sought to assess distal and lateral forces and moments of asymmetric headgears by variable outer bow lengths. materials and methods : four 3d finite element method (fem) models of a cer- vical headgear attached to the maxillary first molars were designed in solidworks2010 software and transferred to ansys workbench ver. 11 software. modelscontained the first molars, thei...

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This thesis addresses sound production in bowed-string instruments from two perspectives: the physics of the bowed string, and bow control in performance. Violin performance is characterized by an intimate connection between the player and the instrument, allowing for a continuous control of the sound via the main bowing parameters (bow velocity, bow force and bowbridge distance), but imposing ...

The dynamics of the frictional force between the bow hair and the string causes the bow to oscillate in its longitudinal direction during the bow stroke. Under certain conditions, such oscillations in the bow enhanced by the bow resonances can be observed in the spectrum of the frictional force between bow and string, and also in the velocity spectrum at the bridge. The present study discusses ...