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10401
Broadband Circularly Polarized CPW-Fed Monopole Antenna with a Via-Free CRLH-TL Unit Cell
Published 2022-01-01“…The measured 10 dB wide impedance bandwidth is 79.5%, and the measured 3 dB axial ratio (AR) bandwidth is 56.2%.…”
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10402
Research of 3D Comprehensive Modification of Transmission Gear
Published 2018-01-01“…Based on the theoretical basis of helical gear axial modification and tooth profile modification,the optimum three-dimensional comprehensive modification parameters of the first gear are designed by applying the optimal Latin sampling principle. …”
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10403
DYNAMIC ANALYSIS AND OPTIMIZATION OF IMPACT MECHANISM FOR IMPACTING AND BREAKING ROCK ROADEADER
Published 2017-01-01“…In order to improve the impact mechanism of the impacting and breaking rock roadheader dynamic characteristics under the cycle impact load,the first six natural frequency and mode shape as well as the displacement-frequency curves were obtained by using stress wave synthesis theory and finite element method in the paper,the modal and harmonic response of the mechanism were analyzed,the main deformation portion and main vibration direction and three axial weakest points of the mechanism were confirmed,structure size optimization of the rocker arm were adopted with multiple objective genetic algorithm,The maximum displacement response of the mechanism was reduced,and the dynamic characteristics of the mechanism were improved,which provides a method and basis for researching and improving the dynamic performance of the mechanism.…”
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10404
Force Model for Crank Group Mechanism and Analysis of Crank Arrangement
Published 2019-05-01“…And dynamic static force analysis model of crank group mechanism containing any crank is established based on deformation coordination equation from the axial deformation of the crank. A numerical example is given to illustrate the effectiveness and convenience of the method. …”
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10405
On the Effect of Functionally Graded Materials on Resonances of Rotating Beams
Published 2012-01-01“…Euler-Bernoulli theory, including an axial stiffening effect and variations of both Young's modulus and density, is employed. …”
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10406
Afrotourism in Brazilian World Heritage sites: challenges and opportunities emphasising a decolonial narrative
Published 2024-12-01“…The Brazilian World Heritage recognised by UNESCO and located in urban centres, like the Historic Centers of Salvador (Bahia) and São Luís (Maranhão), and the archaeological remains of Cais do Valongo ( Rio de Janeiro), reveal themselves as fields of symbolic struggles for the recognition of cultural references of Afro-descendants. …”
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10407
Clinical Management of Malignant Glaucoma
Published 2015-01-01“…The clinical diagnosis is made in the setting of a patent peripheral iridotomy and axial flattening of the anterior chamber. Intraocular pressure is usually elevated, but it may be normal in some cases. …”
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10408
Steady Flow of Couple-Stress Fluid in Constricted Tapered Artery: Effects of Transverse Magnetic Field, Moving Catheter, and Slip Velocity
Published 2016-01-01“…With the help of Bessel’s functions, analytic expressions for axial velocity, flow rate, impedance, and wall shear stress have been obtained. …”
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10409
RESEARCH ON THE CONTACT STRESS OF ROLLS AND FATIGUE DAMAGE DISTRIBUTION OF BACKUP ROLL IN FOUR HIGH PC MILL
Published 2020-01-01“…The finite element method was used to study on the influence of different process parameters on the contact stress distribution and stress distribution uniformity of rolls used in a four high PC mill of 1880 rolling line.The fatigue damage distribution in the axial section of roll body was theoretically calculated by model established based on the damage accumulation theory. …”
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10410
RESEARCH ON CUTTING FORCE MODELLING AND INFLUENCE FACTORS FOR END MILLS WITH VARIABLE-HELIX ANGLE
Published 2017-01-01“…Variable helix cutter can reduce the location error of the finished surface,leading to a more accurate machining operation.Considering the geometries of variable pitch and helix angle,and the piecewise continuous regions of the cutting,an analytical model for predicting the cutting force for milling process with variable helix angle cutter is presented.The validation of the proposed model is conducted via some cutting tests.Based on proposed model,the influence of variable helix character on cutting force is studied.Analyses show that cutting force coefficients obtained from the traditional cutting tool could be used to accurately predict the cutting forces of the variable helix cutting tool.The bigger helix angle corresponds to the smaller cutting force and bigger width of phase.The character of variable-helix angle has more significant influence on cutting force when axial depth of cut is larger.…”
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10411
Finite Element Analysis of Flexsplines of Cone-beam Oral CT Harmonic Reducers
Published 2023-01-01“…The results show that the flexural strain is mainly located at the long and short axes of the wave generator, and the axial strain decreases gradually along the cylinder. …”
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10412
Parkinson's Disease as the Onset of Normal Pressure Hydrocephalus. A case Report
Published 2022-12-01“…A multi-slice computerized axial tomography was performed where the ventricular system was observed with an Evans index of 0.42, the tap test and peritoneal ventricular shunt were performed with the use of intraoperative intracranial pressure neuromonitoring. …”
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10413
EFFECTS ANALYSIS OF PRESSURE ON THE MAGNETIC MEMORY SIGNALS OF PIPELINE DEFECTS
Published 2018-01-01“…The results show that magnetic memory signals of defects have two characteristics—— radial magnetic field in the pipeline mutating from minimum to maximum and axial magnetic field appearing maximum. The magnetic field inside the pipeline decreases and defect’s magnetic memory signals decreases and then remains constant when the pressure increases. …”
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10414
1:2 PARAMETRIC RESONANCE OF MICRO-BEAN SYSTEM SUBJECTED TO NARROW-BAND RANDOM EXCITATION
Published 2017-01-01“…When the damping coefficient,the axial force and the distance between the two plates are increased,the second order response of the plate amplitude is increased.…”
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10415
Acute secondary pancreatitis to giant hiatal hernia. A case report
Published 2024-09-01“…Analysis of pancreatic enzymes, together with imaging methods such as computed axial tomography, esophagogastroduodenoscopy and barium study of the esophagus-stomach and duodenum contributed to the formulation of the diagnosis.…”
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10416
Extrapontine Myelinolysis following Extreme Hypernatremia and Hyperosmolarity
Published 2019-01-01“…On the fourth day of hospitalization, the patient developed tremor, ataxia, and rigor. Cranial magnetic resonance imaging (cMRI) was performed and (mis)interpreted for meningoencephalitis, with corresponding diagnostic and therapeutic implications. …”
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10417
Single Feed Aperture-Coupled Wideband Dielectric Resonator Antenna with Circular Polarization for Ku-Band Applications
Published 2012-01-01“…Extensive simulation parametric studies resulted in a 3 dB axial ratio (AR) bandwidth of 17.24% at a center frequency of 13 GHz, where the dielectric resonator is excited in its HEM11δ resonant mode. …”
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10418
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10419
Effect of residual stress on peak cap stress in arteries
Published 2014-05-01“…The effect of differential growth on the peak stress is explored in a simple, concentric geometry and it is shown that axial differential growth decreases the peak stress in the inner layer. …”
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10420
Simulation Analysis of Cutting Force and Temperature Dynamic Characteristics During Gear Skiving Process
Published 2022-07-01“…On this basis, the influence of different tool speeds and axial feed rates on the three-direction cutting force and cutting temperature is analyzed. …”
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