Zinc oxide (ZnO) and Silicon carbide (SiC) thin films demonstrate unique properties such as high electron mobility, thermal stability, good chemical resistance, and low cost made them good candidates for optical applications. Moreover, semiconductors absorb short wavelengths of light due to the presence of a band gap. This work's purpose is to study the effect of deposited ZnO and SiC thin films by physical vapor deposition (PVD) above two different oxides and substrates.
View Article and Find Full Text PDFIn the present era of significant industrial development, the presence and dispersal of countless water contaminants in water bodies worldwide have rendered them unsuitable for various forms of life. Recently, the awareness of environmental sustainability for wastewater treatment has increased rapidly in quest of meeting the global water demand. Despite numerous conventional adsorbents on deck, exploring low-cost and efficient adsorbents is interesting.
View Article and Find Full Text PDFObjectives: After maxillectomy, prosthetic restoration of the resulting defect is an essential step because it signals the beginning of patient's rehabilitation. The obturator used to restore the defect should be comfortable, restore adequate speech, deglutition, mastication, and be cosmetically acceptable, success will depend on the size and location of the defect and the quantity and integrity of the remaining structures, in addition to pre-prosthetic surgical preparation of defect site. Preoperative cooperation between the oncologist surgeon and the maxillofacial surgeon may allow obturation of a resultant defect by preservation of the premaxilla or the tuberosity on the defect side and maintaining the alveolar bone or teeth adjacent to the defect.
View Article and Find Full Text PDFActa Anaesthesiol Scand
May 2003
Background: Ketamine efficacy as an analgesic adjuvant has been studied in several clinical settings with conflicting results. The aim of this study was to investigate the effect of ketamine on spontaneous and swallowing-evoked pain after tonsillectomy.
Methods: Fifty children were randomized to receive premedication with either ketamine 0.
The ether extract of the lichen Xanthoria steneri Lamb yielded two new octanoic acid derivatives identified as 3-hydroxy 2,4, 6-trimethyl octanoic acid (xantoric acid A) and 3-O-[3'-hydroxy-2',4',6'-trimethyl octanoate]-2,4,6 trimethyl octanoic acid (xanthoric acid B). In addition, 3-methyl orsellinic acid methyl ester (2, 4-dihydroxy-3,6-dimethyl benzoic acid methyl ester), physcion and 5 alpha-stigmast-7-en-3 beta-OI were further isolated and identified on the basis of spectral data. The biological profile of xanthoric acid B revealed a wide range of bioactivity including cytotoxicity, anticonvulsant, antibacterial and antimycotic properties.
View Article and Find Full Text PDFThe phytochemical investigation of the aerial parts of LACTUCA SALIGNA L. revealed the presence of lactucin, lactucopicrin, and a new guaianolide named 11beta,13-dihydrolactucopicrin. The structural configuration was established through spectral data.
View Article and Find Full Text PDFThe aflatoxins B1, G1 and their metabolites exist in the systemic blood as protein conjugate. This conjugation is specific to plasma albumin and proceeds enzymatically by liver and kidney cells. The aflatoxin-albumin conjugate is permanent and the conjugation is an irreversible one.
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