نتایج جستجو برای: piercing propeller
تعداد نتایج: 5495 فیلتر نتایج به سال:
Hepatitis B and hepatitis C are 2 types of potentially life-threatening liver diseases with high infection rate. Body piercing represents a progressively popular sociocultural phenomenon which is also a potential exposure approach for hepatitis B virus (HBV) and hepatitis C virus (HCV). Conclusions from those researches with statistically risk assessment of body piercing on HBV and HCV transmis...
OBJECTIVES To estimate the prevalence of body piercing, other than of earlobes, in the general adult population in England, and to describe the distribution of body piercing by age group, sex, social class, anatomical site, and who performed the piercings. To estimate the proportion of piercings that resulted in complications and the proportion of piercings that resulted in professional help be...
Positioning systems include different control functions for automatic positioning and guidance of marine vessels by means of proper action of the thruster and propeller devices. These may be controllable pitch propeller (CPP) with fixed speed, controllable speed with fixed pitch propeller (FPP), or controllable pitch and speed in combination. The positioning controller computes commanded forces...
A new design of a propulsion device is a Collective and Cyclic Pitch Propeller, CCPP. The principle o f the CCPP is similar to a helicopter main rotor. As such, the propeller operates as a combination between a propulsion device and a directional manipulator. It can generate side thrust to provide direct ional control, in addition to axial thrust variation, which can be generated on a normal co...
A new propeller EPI pulse sequence with reduced sensitivity to field inhomogeneities is proposed. Image artifacts such as blurring due to Nyquist ghosting and susceptibility gradients are investigated and compared with those obtained in previous propeller EPI studies. The proposed propeller EPI sequence uses a readout that is played out along the short axis of the propeller blade, orthogonal to...
Body piercing appears to be gaining in popularity and social acceptance. With the increase in the number of piercings, it is likely that health care providers may see an increase in the complications resulting from these piercings. These may include the transmission of hepatitis viruses and bacteria at the time of the piercing or in the course of wound care. We review the infectious complicatio...
The physically correct capture of propeller-rudder interaction is important if ship self-propulsion parameters are to be accurately predicted. Full resolution of a time accurate computational fluid dynamics calculation based on the Reynolds Averaged Navier Stokes equations requires a significant computational resource. The axial and tangential accelerations generated in the flow by the passage ...
Simulation of the flow around propeller is a complex fluid flow problem, especially when the propeller is close to free surface. In this study, the effect of different depths on the performance and efficiency of a B-Wageningen series close to surface of water have been numerically investigated. For this purpose the ANSYS-FLUENT commercial software has been used to solve the viscous, incompressi...
OBJECTIVES To survey the prevalence of body art (body piercing and tattooing) in university undergraduate students and to determine the incidence of medical complications from these procedures. SUBJECTS AND METHODS Between February and May 2001, students were offered the opportunity to complete an anonymous, voluntary survey at the beginning of class or organizational meetings. The survey ins...
However, a solution does exist, whose understanding relies on the application of the classical laws of physics and which is free of contradictions: if the electron is assumed to be made up of two massless constituent particles, then this assumption correctly predicts the experimental results. It provides the correct relationship between the parameters of the electron: its mass, its constant ang...
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