This paper presents the implementation of open complimentary split ring resonator (OCSRR) structure in small rectangular radiating elements to achieve triple band and dual band reconfigurability using PIN diode. The proposed design is a coplanar waveguide fed structure and consists of three small radiating elements, whereas two OCSRR structures are coupled with the two‐radiating elements. The third radiating element embedded with OCSRR is connected using a PIN diode. Under DC biasing conditions the whole design resonates at three frequencies, that is,
1.9,
3.8, and
5.5 normalGnormalHnormalz, whereas the proposed design switches to dual band operation at
2.6 and
5.5 normalGnormalHnormalz in the diode ‘OFF’ state. The proposed structure is designed and fabricated on a single sided ungrounded FR
4 substrate. Overall, a good agreement between simulated and measured results is observed. It is also observed that the radiation patterns of the proposed antenna are the same with gains of
4.5,
3.2, and
2.5 normaldnormalBnormali at
1.9, 3.8, and
5.5 normalGnormalHnormalz in the PIN diode ‘ON’ state, respectively, whereas in the diode ‘OFF’ state, at
2.6 normalGnormalHnormalz the gain is
4 normaldnormalBnormali and at
5.5 normalGnormalHnormalz the gain is
2.5 normaldnormalBnormali.
This is a comparative prospective study conducted for a period of 2 years from December 2012 to December 2014 in the Postgraduate Department of Otorhinolaryngology, Head and Neck Surgery, Government Medical College, Srinagar, in collaboration with the Department of Biochemistry. A total of 118 subjects were enrolled in the study design, which included 98 histopathologically confirmed head and neck malignant cases and 20 healthy controls. The aim of the study was to compare the ELISA with polymerase chain reaction (PCR) for detection of Epstein-Barr virus (EBV) in head and neck carcinoma cases and compare such results with controls. Results: Around 32.65 and 42.85% of patients were positive for EBV with PCR and ELISA, respectively. When these results were compared with controls, it showed statistically significant results; only 5% of subjects in controls were positive for EBV (p value = 0.015) with PCR while as many as 15% with ELISA (p value = 0.049). The sensitivity and specificity of ELISA are 100 and 84.85%, respectively, with diagnostic accuracy of the test 89.8% (Cohens κ value = 0.7853).
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