نتایج جستجو برای: primary resonance
تعداد نتایج: 845231 فیلتر نتایج به سال:
اساس نظریه مجموعه های ناهموار، بدین صورت است که برای هر زیرمجموعه از یک مجموعه کلی، با استفاده از یک رابه هم ارزی، یک زوج مرتب از مجموعه ها را معرفی می کند. هر موفه را به ترتیب، تقریب پایینی و بالایی می نامند. تقریب پایین از یک زیرمجموعه،اجتماع تمام عناصری از مجموعه ی کلی است که کلاس هم ارزی مربوط به آن عنصر، در زیرمجموعه ی مورد نظر قرار گیرد و همچنین، تقریب بالا از آن زیرمجموعه، اجتماع تمام عن...
introduction pelvic pain results from many causes such as primary dysmenorrhea, uterine anomalies, menstrual outflow obstruction, endometriosis, myoma and adenomyosis. this study reports on a rare case of non-communicating functional rudimentary horn. case presentations a 15-year-old nulligravida young woman with a history of severe intermittent pelvic pain presented a 4-5 centimeter mass. a su...
metallic nanoparticles can exhibit very large optical extinction in the visible spectrum due to localized surface plasmon resonance. spherical plasmonic nanoparticles have been the subject of numerous studies in recent years due to the fact that the scattering response of spheres can be analytically evaluated using mie theory. however a major disadvantage of metallic spherical nanoparticles is ...
Abstract: In the positioning system of the large-scale high-precision stage, the primary resonance mode appears in low frequency even in the high stiffness stage. The resonance mode is a major obstacle of fast and precise positioning. In this paper, we apply vibration suppression PTC (Perfect Tracking Control) which can control the resonance mode actively on the largescale stage. Finally, simul...
background: primary antibody deficiency, the most common primary immunodeficiency disorder, represents a heterogeneous spectrum of conditions caused by a defect in any critical stage of b cell development and is characterized by impaired production of normal amounts of antigen-specific antibodies. objective: this retrospective study aimed at description and analysis of demographic, clinical, im...
iron overload is a clinical problem which can be prevented by using iron chelating agents. an alternative method of relieving iron overload is to reduce iron absorption from the intestine by administering specific iron chelating agents, which can bind iron to form nonabsorbable complexes. based on this strategy, a series of polymeric ligands containing the chelating moiety 3-hydroxypyridin-4-on...
One primary disadvantage of spiral imaging is blurring artifact due to off-resonance effects. The conventional frequency segmented off-resonance correction method that is performed over the entire image is computationally intense due to the large number of fast Fourier transforms (FFTs) required. Here, a new fast off-resonance correction method, block regional off-resonance correction (BRORC), ...
In this paper, the effect of the crack on dynamic behavior of cracked micro-beam in the presence of DC and AC loads are investigated. By applying the residual axial stress and fringing field stress, a nonlinear analytical model of cracked micro-beam is presented and crack is modeled by a massless rotational spring. The governing equation of the system is solved using Galerkin procedure and shoo...
An entirely new design approach has been employed to create the printed dualband monopole antenna that was subject of this investigation. The construction is primary component suggested design. CPW transmission lines with 50 Ohm impedance and a relative dielectric constant 4.6 were used power antennas, which housed in thin substrates thicknesses 1.6 millimeters (mm). In study, antennas discusse...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید