Introduction: Photon contamination is a restriction on treatment with electron that increase dose to healthy tissue below the tumor. The aim of this study is to reduce the photon contamination using a magnet system. Materials and Methods: A mini-applicator equipped with two neodymium boron permanent magnets was designed which make it possible to adjust the d...

Underwater blasting technique is often adopted to clear away the obstructed reef and dredge-cut in mountainous waterway dredging engineering. However, vibration of underwater excavation riverbed has a certain influence on stability bank slopes. Combined with partial collapse phenomenon regulation project between two dams Three Gorges reservoir area, change pore water pressure unsaturated soil u...

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Labral pathologies of the glenohumeral joint are most commonly caused by trauma. The majority of lesions affect the anterior part of labrum, resulting from much higher frequency of anterior shoulder dislocations over posterior ones. Another subgroup of labral lesions, not directly related to joint instability, are SLAP tears. Other findings include degenerative changes of labrum and paralabral ...

PURPOSE The objective of this study was to assess the outcomes for treated root-fractured permanent incisors with respect to pulp vitality, root tissue union, and tooth survival and to examine the effects of clinical and radiographic parameters and rigid splinting on the outcome. METHODS Eighty-four teeth were identified and data extracted from case notes prior to transfer to an SPSS data bas...

Streaming music services have exploded in popularity in the past few years, variously raising optimism and concern about their impacts on recorded music revenue. On the one hand, streaming services allow sellers to engage in bundling with the promise of increasing revenues, profits, and consumer surplus. Successful bundling would indeed translate some of the interest in music not generating rev...

Fiber optic sensors are attracting an increasing interest in many applications because of their high sensitivity combined with other unique properties such as immunity to electrostatic discharges, intrinsic fire safety and minimum invasiveness. However, their wide diffusion in structural permanent monitoring is still hampered by costs, especially those related to the interrogators and installat...

We report overall design considerations and preliminary results for a new haptic rendering device based on an audio loudspeaker. Our application models tissue properties during microsurgery. For example, the device could respond to the tip of a tool by simulating a particular tissue, displaying a desired compressibility and viscosity, giving way as the tissue is disrupted, or exhibiting indepen...

Both educational expenditures and attainment have increased sharply over the last decades, despite rising prices of education, and stagnating income returns to human capital. This paper emphasizes conditional employment risks hedging as additional motivation for education demand. Job risk diversification through education is strongly evidenced in the data, yet is absent from the Human Capital (...

This study was conducted on 48 impacted and 51 erupted maxillary permanent canine teeth extracted from healthy patients aged 13-73 years. Longitudinal buccolingual ground sections were prepared. The distance between the edges of cementum and enamel in each specimen was measured with an eyepiece micrometer. A correlation test was applied between age and the distance between enamel and cementum m...