نتایج جستجو برای: امواج rf
تعداد نتایج: 40644 فیلتر نتایج به سال:
Resonant structure is one of the proposed methods in combining power in RF systems of RF accelerators. In this structure, fabrication of RF power divider or combiner using coaxial and cylindrical cavity is important. In this study, two combiners, in the same frequency band, are designed and fabricated; and their results are compared. The experimental results confirmed the simulation results an...
چکیده ندارد.
total igm, iga, and igm-rheumatoid factor (rf) and iga-rf were quantitated in the serum and synovial fluid of 35 seropositive and 8 seronegative rheumatoid arthritis (ra) patients, using a sensitive enzyme-linked immunosorbent assay (elisa). mononuclear cells isolated from peripheral blood and synovial fluid of three seropositive patients were also stimulated in vitro with phorbol myristate ace...
زمینه و هدف : آرتریت روماتوئید بیماری التهابی منتشر و مزمن است. آنتی بادی های پپتید آنتی سیکلیک سیترولینه و فاکتور روماتوئید (rf) به عنوان آنتی بادی های اختصاصی در تشخیص این بیماری مطرح شده اند و هر دو از اهمیت تشخیصی بالایی برخوردارند. این مطالعه به منظور تعیین ارزش تشخیصی آنتی بادی های ضدپپتید حلقوی سیترولینه (anti-ccp) و فاکتور روماتوئید (rf) در تشخیص بیماری آرتریت روماتوئید انجام شد. روش بر...
The electric field in cavity accelerates charged particles and magnetic field of magnets changes the direction of these particles in cyclotrons. In order to establish the electric field inside the cavity, a noiseless radio frequency (RF) signal should be generated, amplified and sent to cavity. The resonant frequency of the cavity could be changed by temperature variation. Variation of resonant...
Rheumatoid Arthritis (RA) is a systemic autoimmune disease. Production of Rheumatoid Factor(RF) is a characteristic feature of the majority RA patients. Previous studies showed there are differences between seropositive-RA(SP-RA) and seronegative-RA(SN-RA), regarding clinical manifestations. In this study the level of CRP was measured in serum and synovial fluid of 45 RA patients by latex a...
The radiofrequency electromagnetic fields (RF-EMFs) produced by widely used mobile phones are classified as possibly carcinogenic to humans by International Agency for Research on Cancer (IARC). Current data on the relationship between exposure to RF-EMFs generated by commercial mobile phones and brain cancer are controversial. Our studies show that this controversy may be caused by several par...
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