Objectives Colonoscopy is the gold standard diagnostic test used to detect early colorectal lesions and prevent colorectal carcinoma. Narrow band imaging (NBI) is an imaging technique that provides improved image resolution of the mucosa during endoscopy. Whether NBI improves the detection of sessile serrated lesion (SSL) is controversial—our aim was to assess this during routine colonoscopy. Methods We conducted a multicenter, prospective, randomized, controlled trial. Patients underwent colonoscopy for screening, surveillance, or symptoms. They were randomized to either high‐definition white light (HD‐WL) or NBI in a 1:1 ratio. The primary outcome was SSL detection rate. Secondary outcomes were adenoma detection rate (ADR) and polyp detection rate (PDR). Results A total of 400 patients were randomized to NBI (N = 200) or HD‐WL (N = 200). The total colonoscopy time was slightly longer in the NBI group compared to HD‐WL (median time 14 vs. 12 min, p = 0.033). There were no statistically significant differences in SSL detection rate (7.5% NBI vs. 8.0% HD‐WL; p = 0.852), ADR (41.0% NBI vs. 37.5% HD‐WL; p = 0.531), or PDR (61.0% NBI vs. 54.0% HD‐WL; p = 0.157) between the two groups. No significant predictors of SSL detection were found on univariable or multivariable analysis. Increasing age and increased withdrawal time were an independent predictors of polyp detection and increasing age was also an independent predictor of adenoma detection on multivariable analysis. Conclusion In the hands of experienced colonoscopists, NBI does not improve SSL detection compared to HD‐WL. Withdrawal time and patient age remain important factors for polyp and adenoma detection.

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In this paper, we aim to combine the schemes of multiuser applied in multiple-input multiple-output (MIMO) scheme with NOMA downlink communication systems. As multiple techniques can achieve multi-stream beam-forming coding diversity, the use of MIMO techniques brings flexible dimension for performance improvements. On the other hand, based on zero-forcing (ZF) technique, low complexity linear precoding scheme can reduce inter-interference when channel transmission. In particular, aiming to significantly enhance spectrum efficiency, we need to tackle the interference issue, which is exacerbated in heterogeneous network due to ultra dense node deployment as well as heterogeneity nature of various nodes. Specifically, we first study an optimal intracell inter-tier cooperation to mitigate interference between high power nodes and low power nodes.

The pyrazolone subordinate, aminopyrine, has been broken down tentatively and hypothetically for its vibrational frequencies. The chemical shift values and symphonious vibrational frequencies as obtained at B3LYP/CAM-B3LYP/6-31G after employing proper scaling techniques appear to match acceptably with the test perceptions. The hypothetical spectrograms for NMR, FT-IR and UV spectra of aminopyrine have been likewise developed and contrasted with the trial spectra. Determined hyperpolarizability (4.531 ×10-30 esu) showed that particle may have non linear optical (NLO) component with non-zero qualities. An investigation of hydrogen bonding, utilizing mathematical and topological boundaries has additionally been introduced.

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