We report a simple and environment friendly method to fabricate superhydrophobic metallic mesh surfaces for oil/water separation. The obtained mesh surface exhibits superhydrophobicity and superoleophilicity after it was dried in an oven at 200 °C for 10 min. A rough silver layer is formed on the mesh surface after immersion, and the spontaneous adsorption of airborne carbon contaminants on the silver surface lower the surface free energy of the mesh. No low‐surface‐energy reagents and/or volatile organic solvents are used. In addition, we demonstrate that by using the mesh box, oils can be separated and collected from the surface of water repeatedly, and that high separation efficiencies of larger than 92 % are retained for various oils. Moreover, the superhydrophobic mesh also possesses excellent corrosion resistance and thermal stability. Hence, these superhydrophobic meshes might be good candidates for the practical separation of oil from the surface of water.

Autonomous liquid-volume monitoring is crucial in ubiquitous healthcare. However, conventional approach is based on either human visual observation or expensive detectors, which are costly for future pervasive monitoring. Here we introduce a novel approach based on passive harmonic transponder antenna sensor and frequency hopping spread spectrum (FHSS) pattern analysis, to provide a very low cost wireless μL-resolution liquid-volume monitoring without battery or digital circuits. In our conceptual demonstration, the harmonic transponder comprises of a passive nonlinear frequency multiplier connected to a metamaterial-inspired 3-D antenna designed to be highly sensitive to the liquid-volume within a confined region. The transponder first receives some FHSS signal from an interrogator, then converts such signal to its harmonic band and re-radiates through the antenna sensor. The harmonic signal is picked up by a sniffer receiver and decoded through pattern analysis of the high dimensional FHSS signal strength data. A robust, zero power, absolute accuracy wireless liquid-volume monitoring is realized in the presence of strong direct coupling, background scatters, distance variance as well as near-field human-body interference. The concepts of passive harmonic transponder sensor, metamaterial-inspired antenna sensor, and FHSS pattern analysis based sensor decoding may help establishing cost-effective, energy-efficient and intelligent wireless pervasive healthcare monitoring platforms.

Background/Aim: Head and neck cancer is a major malignancy worldwide. The treatment strategy for head and neck cancer usually involves radiotherapy. The main side effect of radiotherapy is radiation dermatitis. Thus, determining the most effective topical regimen for the prevention of radiation dermatitis in head and neck cancer patients is a critical issue. Patients and Methods: PRISMA-NMA guidelines were used in this network meta-analysis. We included only randomized control trials. A random effects model was used. Heterogeneity was evaluated by I 2 and Cochran's Q tests. Results: We included a total of 1,304 patients in the network meta-analysis. Among them, olive oil was the only effective regimen when compared with usual care (OR=0.18, 95%CI=0.03-0.95). The I 2 value was 56%. The test of heterogeneity yielded a p-value of 0.10. Conclusion: Olive oil was the most effective regimen for the prevention of radiation dermatitis.Head and neck cancers are a major malignancy worldwide and include nasopharyngeal, oral cavity, oropharyngeal, hypopharyngeal, and laryngeal cancers. The global burden of head and neck cancer has been increasing (1). Treatment strategies for head and neck cancer include radiotherapy, chemotherapy, targeted therapy, immunotherapy, and surgery. Following radiotherapy for head and neck cancer, the most common side effects in cancer survivors are radiation dermatitis and oral mucositis (2).Radiation dermatitis (RD) usually appears within a few weeks after the start of radiation therapy. Despite advances in radiotherapy techniques, skin reactions are still inevitable. Specifically, approximately 85% of radiated patients with head and neck cancer develop moderate to severe skin reactions (3), the severity of which can be evaluated using the Common Terminology Criteria for Adverse Events proposed by National Cancer Institute (NCI-CTCAE) criteria (4) or the Radiation Therapy Oncology Group (RTOG) criteria (5). Early symptoms include generalized erythema, dry desquamation, pruritus, epilation, scaling, dyspigmentation, and hair loss (6). Radiation dermatitis can affect the patient's quality of life. When symptoms are severe, radiation therapy may even need to be interrupted.Because radiation dermatitis may interfere with the course of radiation therapy, it is common in clinical practice to adopt prophylactic interventions prior to the onset of radiation dermatitis; such prophylaxis consists of general skin care measures and topical agents (7, 8). The main topical agents used in clinical practice include topical corticosteroids, trolamine, Aloe vera, sucralfate, or 1453

Capecitabine-induced hand-foot syndrome (HFS) is common in clinical practice.There are many regimens used to prevent HFS. However, the most effective preventive regimen has not yet been identified. Thus, we conducted a network metaanalysis to investigate the best preventive regimen for HFS. The PRISMA-NMA guidelines were used in this study. The PubMed, Cochrane, and Embase databases were searched. The main endpoint was set as HFS of National Cancer Institute grade 2 or more. We included only randomized control trials. The P-score was used to rank the regimens. Among all the regimens, topical silymarin had the best preventive ability compared with the placebo (OR: 0.08; 95% CI: 0.01-0.71). The other identified effective regimen included pyridoxine (400 mg) and celecoxib; compared with the placebo, the odds ratio was 0.27 (95% CI: 0.08-0.91) and 0.41 (95% CI: 0.18-0.95), respectively. Topical silymarin is the most useful regimen for preventing capecitabine-induced HFS.

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