Sheath currents in high voltage cable circuits have proven to be one of the most convenient indicators for assessing health. The sheath are regularly distributed with fluctuation a certain range under normal conditions, while principle distribution characteristics is still unclear when cross-bonded grounding system circuit abnormal. This paper classifies common defects into three types topologi...

by employing the theoretical method based on tight-binding, we study electronic band structure of single-wall carbon nanotube (cnt) superlattices, which the system is the made of the junction between the zigzag and armchair carbon nanotubes. exactly at the place of connection, it is appeared the pentagon–heptagon pairs as topological defect in carbon hexagonal network. the calculations are base...

background: there is some evidence indicating improvement in myocardial performance after atrial septal defect closure, either device closure or surgical, but ventricular dyssynchrony has not been evaluated before and after surgical closure. the aim of this study was to evaluate ventricular mechanical dyssynchrony in patients with atrial septal defect before and after surgical closure. methods:...

a one-month-old male terrier dog was referred in shock status with a history of anorexia, tachypnea, abdominal distention and progressive weight loss. auscultation of right side of the lungs found enhanced respiratory noises. the thorough auscultation of the opposite side of the chest revealed the presence of typical intestinal sounds. cardiac auscultation revealed muffled heart sounds and a di...

venturi flumes are measurement structures commonly used in water systems to measure the flow discharge. some of them are not well installed or present some geometrical defects. the objective of this study is to investigate the hydraulic influence of a number of typical wrong installations and geometrical defects of long-throated venturi flumes: significant positive or adverse slopes, humps and ...

graphene sheet including single vacancy, double vacancy and stone-wales with armchair and zigzag structure was simulated using molecular dynamics simulation. the effect of defects on shear’s modulus, shear strength and fracture  strain was investigated. results showed that these shear properties reduce when the degrees of all kinds of defects increase. the dangling bond in sv and dv defected gr...

Software defect prediction is recognized as one of the most important ways to reach software development efficiency. The majority of costs during software development is spent on software defect detection activities, but their ability to guarantee software reliability is still limited. The analyses performed by [Andersson and Runeson 2007; Fenton and Ohlsson 2000; Galinac Grbac et al. 2013], in...

Point defect-based single-photon emitters (SPEs) in GaN have aroused a great deal of interest due to their room-temperature operation, narrow line width and high emission rate. The SPEs at the telecommunication bands also been realized recently by localized defects experiments, which are highly desired for practical applications quantum communication with fiber compatibility. However, origin un...

Metal halide perovskites (MHPs) constitute a rich library of materials with huge potential for disruptive optoelectronic technologies. Their main strength comes from the possibility easily tuning their bandgap to integrate them in devices different functionalities — principle. In reality, this cannot be achieved yet. fact, whereas defect tolerance can claimed MHPs about 1.6 eV, model system tha...