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- 저자 : Junjun Tan (검색결과 3 건)
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High-Conductivity SiO2-Matrix B-Doped Si-NC Thin Films by Following Ion-Beam Treatment
Junjun Huang,Weiyan Wang,Jie Yang,Yongzhen Tan,Wei Chen,Tianyu Ge,Yajun Zhang,Min Gao,Zhenming Chen 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.6
In this work, further ion-beam was performed on SiO2-matrix B-doped Si-NC (SBC) thin films in order to enhance conductivity. The effect of ionbeamtype on the electrical properties of SBC thin films was investigatedsystematically. The results indicated that the conductivities of SBC thinfilms were significantly improved by both argon and hydrogen ion-beamtreatments, and the higher the hydrogen ion ratio, the higher theconductivity of SBC thin films. The conductivity of SBC thin films wasincreased from 1.82 × 10−6 S/cm to 3.2 × 10−3 S/cm with followinghydrogen-ion-beam treatment. The change in conductivity of SBC thinfilms was most possibly resultant from the ion-beam treatment facilitatingthe formation of higher superficial order and lower defects. An alternativemethod was proposed to prepare high-conductivity SBC thin films, whichmay be applied to other heterogeneous thin films.
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Review of Vasectomy Complications and Safety Concerns
Yang Fang,Li Junjun,Dong Liang,Tan Kun,Huang Xiaopeng,Zhang Peihai,Liu Xiaozhang,Chang Degui,Yu Xujun 대한남성과학회 2021 The World Journal of Men's Health Vol.39 No.3
Vasectomy is a simple, safe, effective, and economical method used worldwide for long-term male contraception. As a sur-gical operation, it has short-term and long-term complications such as hematoma formation, infection, sterilization failure, sperm granulomas, short-term postoperative pain (nodal pain, scrotal pain, and ejaculation pain), and chronic pain syn-drome. Whether it increases the risk of autoimmune disease, cardiovascular disease, testicular cancer, or prostate cancer is still controversial. Changes in plasma concentrations of luteinizing hormone, follicle-stimulating hormone, and testosterone after vasectomy have also been studied, as well as the relation between vasectomy and sexual function. Sperm quality de-creases very slowly after vasectomy, and vasovasostomy and intracytoplasmic sperm injection could help a couple achieve a pregnancy if they change their minds at any point. We include a follow-up strategy and suggestions for follow-up care at the end of this review.
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Jiangzhou Zhuang,Xiaoyin Jin,Xianlin Shen,Junjun Tan,Longhui Nie,Jian Xiong,Bing Hu 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.7
A series of catalysts, ionic liquid-modified SBA-15 (denoted ILSBA) doped with H5PMo10V2O40 (HPMoV2) have been synthesized and characterized by XRD, FT-IR, 1H NMR, TG-DTA, and TEM. The catalyst was used for the removal of dibenzothiophene (DBT) in model oil combined with hydrogen peroxide (the oxidant) and acetonitrile (the phase-transfer agent). It was observed that the sulfur content of DBT can be reduced from 500 to 2 ppm by adjusting the amount of catalyst, the reaction temperatures and the reaction time. Besides, the catalyst activity for different sulfur compounds showed a huge difference which may be mainly affected by the electron densities of sulfur atom. Moreover, the catalyst can be recycled seven times without a significant loss in activity, which could be ascribed to the strong electrostatic interaction between ILSBA and HPMoV2. In addition, a postulated mechanism was proposed to reveal the oxidative desulfurization process.
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