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门诊无痛肠镜检查后患者观察室滞留时间的影响因素研究

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浙江医学 2021年第14期43卷 1572-1574,1585页

作者：程熠王磊郭丽艳屠慧琳冯毅承罗文芩平湖市第一人民医院麻醉科 314200 平湖市第一人民医院内镜中心 314200

目的分析门诊无痛肠镜检查后患者在内镜观察室滞留时间的影响因素。方法回顾平湖市第一人民医院2020年1至6月的397例门诊无痛肠镜患者的临床资料,收集患者年龄、性别、BMI、ASA分级、是否有吸烟史、是否使用布托啡诺、丙泊酚使用量、术... 详细信息

目的分析门诊无痛肠镜检查后患者在内镜观察室滞留时间的影响因素。方法回顾平湖市第一人民医院2020年1至6月的397例门诊无痛肠镜患者的临床资料,收集患者年龄、性别、BMI、ASA分级、是否有吸烟史、是否使用布托啡诺、丙泊酚使用量、术中输液量、肠镜检查时间、是否摘除息肉、是否使用阿托品、是否使用去甲肾上腺素以及检查后是否发生恶心、呕吐、腹痛、腹胀等14个因素,采用单因素及多因素logistic回归分析内镜观察室滞留时间延长的影响因素。结果单因素logistic回归分析显示,年龄、丙泊酚使用总量、肠镜检查时间长短、检查后发生恶心、呕吐、腹胀、腹痛对门诊无痛肠镜受检患者在内镜观察室滞留时间有明显影响(均P60岁(OR=2.025,95%CI:1.089-3.766,P=0.026),丙泊酚使用量(OR=1.008,95%CI:1.001-1.015,P=0.033),检查后发生恶心、呕吐(OR=3.789,95%CI:1.485-9.666,P=0.005),发生腹胀、腹痛(OR=2.123,95%CI:1.012-4.454,P=0.047)是患者检查后内镜观察室滞留时间延长的影响因素。结论年龄>60岁,丙泊酚使用量以及检查后发生恶心、呕吐和腹胀、腹痛是门诊患者无痛肠镜检查后内镜观察室滞留时间延长的影响因素。

关键词：无痛肠镜麻醉后监测治疗室回归分析

Enhanced Peroxymonosulfate Activation by NixCo1-xOOH for Efficient Catalytic Oxidation of Organic Pollutants

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Chemical Research in Chinese Universities 2019年第3期35卷 440-448页

作者： LYU Cong LI yicheng FANG Chen feng Wei SUN Wentian ZHANG Qihui Key Laboratory of Groundwater Resources and Environment Ministry of Education Jilin UniversityChangchun 130021P.R.China Jilin Provincial Key Laboratory of Water Resources and Environment Jilin University Changchun 130021P.R.China Department of Civil and Environmental Engineering Northeastern University BostonMassachusetts 02115USA

Peroxymonosulfate(PMS) has received increasing attention as viable technology for recalcitrant organics removal from polluted waters. Although promising, alternative heterogeneous catalysts with stable structure, strong hydrophilicity, environmental friendliness and excellent catalytic performance are highly desirable to facilitate the wide industrialization of PMS. In this work, Ni doped CoOOH catalyst was employed as PMS activator. Ni dopant had a significant influence on the morphology, structure and catalytic performance of CoOOH. *** exhibited the best catalytic performance. Reaction rate ofNio.2Coo.8OOH was 2, 4, and 4.4 times that of CoOOH, CoFe2O4 and CO3O4, respectively. Moreover, Ni。2C00.8OOH/PMS system had potential application to organic pollutants and displayed a great catalytic activity over a broader pH value(e.g., 4-10). More importantly, Ni doping accelerated the transfonnation of Co(Ⅲ) and Co(Ⅱ) and formed active species CoOH^+ and NiOH^+ which were responsible to the enhancement of PMS ***, SO4^-:O2^- and 1^O2 were detected, indicating both non-radical and radical processes in the Nio.2Coo.8OOH/PMS system. These findings provide a promising alternative to mixed-metal oxyhydroxides catalysts for PMS activation, demonstrating a great potential in environmental remediation and wastewater treatment.

关键词： Ni dopant Sulfate radical Superoxide radical Singlet oxygen Electron transfer

冷轧变形对Al-Cu-Mg合金的显微组织与力学性能的影响

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材料导报 2023年第11期37卷 146-152页

作者：王帅郭二军冯义成付金来马宝霞赵思聪王雷哈尔滨理工大学材料科学与化学工程学院哈尔滨150040 东北轻合金有限责任公司哈尔滨150060

采用光学显微镜、扫描电子显微镜、EBSD技术、透射电子显微镜和万能拉伸试验机等研究了冷轧变形对热轧态Al-Cu-Mg合金显微组织和性能的影响。显微组织观察结果表明,随着冷轧变形量的增加,合金中未溶的Al_(2)CuMg[Fe,Mn]相和Al_(2)Cu[Fe,... 详细信息

采用光学显微镜、扫描电子显微镜、EBSD技术、透射电子显微镜和万能拉伸试验机等研究了冷轧变形对热轧态Al-Cu-Mg合金显微组织和性能的影响。显微组织观察结果表明,随着冷轧变形量的增加,合金中未溶的Al_(2)CuMg[Fe,Mn]相和Al_(2)Cu[Fe,Mn]相发生了破碎。基体中存在较多的棒状Al_(2)0 Cu_(2)Mn_(3)相,该相附近存在大量缠结位错,对合金产生显著强化效果。在冷轧变形量为19%时,位错密度达到最大值。同时,随着冷轧变形量的增加,S、R、Cube、Goss、Brass织构的含量也增加,〈111〉、〈110〉织构的含量降低。力学性能测试结果表明,随着冷轧变形量的增加,合金强度提高,延伸率仍保持较高水平。当冷轧变形量为11%时,合金轧向综合力学性能最佳,抗拉强度为465.0 MPa,屈服强度为291.6 MPa,延伸率为19.0%。此时,合金横向抗拉强度为469.9 MPa,屈服强度为318.0 MPa,延伸率为16.9%。

关键词： Al-Cu-Mg合金冷轧变形显微组织力学性能第二相

中国东南部中生代陆相火山铅锌矿床的若干问题

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中国地质科学院南京地质矿产研究所所刊 1983年第1期 45-58页

作者：芮行健吴岩封益城巫怀仁章纯荪戚建中朱韶华南京地质矿产研究所

中国东南部中生代陆相火山岩非常发育(图1)。与之有关的铅锌矿床为数众多。该区铅锌的找矿工作开始较早。至本世纪六十年代以前,除江西德兴银山等少数矿区之外,收效甚微。六十年代以后,由于各单位注意运用火山成因观点开展工作,从而找... 详细信息

中国东南部中生代陆相火山岩非常发育(图1)。与之有关的铅锌矿床为数众多。该区铅锌的找矿工作开始较早。至本世纪六十年代以前,除江西德兴银山等少数矿区之外,收效甚微。六十年代以后,由于各单位注意运用火山成因观点开展工作,从而找到和重新评价了一批矿床,工业储量大幅度增长。为了总结铅锌矿的工作经验,我们在各省地质工作的基础上,结合我组近年来的成果,对下述问题提出一些见解,谬误之处,敬请指正。

关键词：铅锌矿床有色金属矿床火山次火山热液矿床脉状矿床火山岩浆陆相沉积相中生代中生界地质年代若干问题中华人民共和国

Phonon engineering in Yb:La_(2)CaB_(10)O_(19)crystal for extended lasing beyond the fluorescence spectrum

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Light(Science & Applications) 2023年第9期12卷 1921-1929页

作者： Yanling Cheng Fei Liang Dazhi Lu Jingcheng feng Guochun Zhang Haohai Yu Huaijin Zhang yicheng Wu State Key Laboratory of Crystal Materials and Institute of Crystal Materials Shandong UniversityJinan 250100China Key Lab Functional Crystals and Laser Technology Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Since the first invention of the laser in 1960,direct lasing outside the fluorescence spectrum is deemed impossible owing to the“zero-gain”***,when electron-phonon coupling meets laser oscillation,an energy modulation by the quantized phonon can tailor the electronic transitions,thus directly creating some unprecedented lasers with extended wavelengths by phonon ***,we demonstrate a broadband lasing(1000-1280 nm)in a Yb-doped La_(2)CaB_(10)O_(19)(Yb:LCB)crystal,far beyond its spontaneous fluorescence *** calculations and in situ Raman verify that such a substantial laser emission is devoted to the multiphonon coupling to lattice vibrations of a dangling“quasi-free-oxygen”site,with the increasing phonon numbers step-by-step(n=1–6).This new structural motif provides more alternative candidates with strong-coupling laser ***,the quantitative relations between phonon density distribution and laser wavelength extension are *** results give rise to the search for on-demand lasers in the darkness and pave a reliable guideline to study those intriguing electron-phonon-photon coupled systems for integrated photonic applications.

关键词： beyond lasing spectrum

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金属材料工程专业实践教学改革与探索

中国现代教育装备 2014年第21期 3-5页

作者：康福伟冯义成曹国剑石德全俞泽民汪丽萍哈尔滨理工大学材料科学与工程学院黑龙江哈尔滨150040

结合哈尔滨理工大学材料科学与工程学院金属材料工程专业特点,论述了实践教学,尤其是生产实习在人才培养中的重要性。通过对生产实习现状的分析和研究,阐述了目前生产实习中存在的主要问题。以金属材料工程专业为例,提出了生产实习精细... 详细信息

结合哈尔滨理工大学材料科学与工程学院金属材料工程专业特点,论述了实践教学,尤其是生产实习在人才培养中的重要性。通过对生产实习现状的分析和研究,阐述了目前生产实习中存在的主要问题。以金属材料工程专业为例,提出了生产实习精细化管理、校企合作、提高教师工程实践能力等改进措施。实践证明,教学效果良好。

关键词：生产实习金属材料工程现状措施

Anti-HBV effect of liposome-encapsulated matrine in vitro ana in vivo

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World Journal of Gastroenterology 2005年第3期11卷 426-428页

作者： Chang-QingLi Yu-TongZhu feng-XueZhang Lin-ChunFu Xiao-HuiLi yicheng Xiang-YangLi TropicalMedicineInstitute GuangzhouUniversityofTraditionalChineseMedicineGuangzhou510405GuangdongProvinceChina SchoolofChineseMateriaMedica GuangzhouUniversityofTraditionalChineseMedicineGuangzhou510405GuangdongProvinceChina

AIM: To study the anti-HBV effect of liposome-encapsulated matrine (Lip-M) in vitro and in vivo. METHODS: 2.2.15 cell line was cultured in vitro observe the effect of Lip-M and matrine on the secretion of HBsAg and HBeAg. The toxicity of Lip-M and matrine to 2.2.15 cell line was also studied by MTT method. In in vivo study, drug treatment experiment was carried out on the 13th day after ducks were infected with duck hepatitis B virus (DHBV). The ducks were randomly divided into 4 groups with 5-6 ducks in each group. Lip-M and matrine were given to DHBV-infected ducks respectively by gastric perfusion. Four groups were observed: group of Lip-M (20 mg/kg), group of Lip-M (10 mg/kg), group of matrine (20 mg/kg) and group of blank model. The drug was given once daily for 20 d continuously, and normal saline was used as control. The blood was drawn from the posterior tibial vein of all ducks before treatment (T0), after the medication for 5 (T5), 10 (T10), 15 (T15), 20 (T20) d and withdrawl of the drug for 3 d (P3). The serum samples were separated and stored at -70 ℃, DHBV-DNA was detected by the dot-blot hybridization. RESULTS: After addition of Lip-M and matrine to 2.2.15 cell line for eleven d, the median toxic concentration (TC50) of Lip-M and matrine was 7.29 mg/mL and 1.33 mg/mL respectively. The median concentration (IC50) of Lip-M to inhibit HBsAg and HBeAg expression was 0.078 mg/mL and 3.35 mg/mL respectively. The treatment index (TI) value of Lip-M for HBsAg and HBeAg was 93.46 and 2.17 respectively, better than that of matrine. The DHBV-infected duck model treatment test showed that the duck serum DHBV-DNA levels were markedly reduced in the group of Lip-M (20 mg/kg) after treated by gastric perfusion for 10, 15 and 20 d (0.43±0.22 vs 0.95±0.18, t = 4.70, P= 0.001<0.***.0.40±0.12 vs 0.95±0.18, t = 6.34, P= 0.000<0.01. 0.22±0.10 vs 0.95±0.18, t = 8.30, P= 0.000<0.01), compared to the group of matrine (20 mg/kg) (0.43±0.22 vs 0.79±0.19, t = 3.17, P= 0.01<0.05.

关键词： Duck hepatitis B virus Matrine Liposome Virus Replications

An Intramolecular Charge Transfer and Aggregation Induced Emission Enhancement Fluorescent Probe Based on 2-Phenyl-1,2,3-triazole for Highly Selective and Sensitive Detection of Homocysteine and Its Application in Living Cells

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Chinese Journal of Chemistry 2019年第12期37卷 1216-1222页

作者： yicheng Chu Zhengfeng Xie Daijiao Zhuang Yongshuang Yue Yuhua Yue Wei Shi Shun feng Oil&Gas Field Applied Chemistry Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringSouthwest Petroleum University8 Xindu RoadXinduChengduSichuan 610500China School of Life Science and Engineering Southwest Jiaotong UniversityChengduSichuan 610031China

Summary of main observation and con elusion In this work,a new simple and readily synthesized turn-on probe 2-(4-anthracene-9-yl-phenyl)-2H-[l,2,3]triazole-4-carbaldehyde(APTC)was legitimately designed towards homocysteine(Hcy).Moreover,APTC has excellent optical properties such as intramolecular charge transfer(ICT)and aggregation induced emission enhancement(AIEE)characteristics,indicating its extensive application ***'s more,APTC displayed rapid,high selectivity and specificity towards homocysteine over cysteine/*** detection limit of APTC for Hcy was as low as 2.198×10^-8 mol·L^-1,and the response time was only 5 *** has been successfully applied to detect Hcy in silica gel plates and living cells,which indicates that APTC has good stability and biocompatibility as a selective probe for ***,the mechanism was studied using 1H NMR titration experiments and mass spectrometry.

关键词： specificity Probe Highly

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凝固应力法测试铸造铝硅合金枝晶搭接点研究

铸造技术 2018年第11期39卷 2481-2484页

作者：曾哲明冯义成杨婉婷张佳鹏王丽萍李娜哈尔滨理工大学材料科学与工程学院黑龙江哈尔滨150040

以Al-Si-Mg合金为研究对象,采用双热电偶法和动态凝固应力测试法测试Al-Si-Mg合金的枝晶搭接点温度。结果表明,采用双热电偶法测得Al-Si-Mg合金枝晶搭接点温度为603.8℃,采用动态凝固应力法测得粗杆和细杆中Al-7Si-0.5Mg合金枝晶搭接点... 详细信息

以Al-Si-Mg合金为研究对象,采用双热电偶法和动态凝固应力测试法测试Al-Si-Mg合金的枝晶搭接点温度。结果表明,采用双热电偶法测得Al-Si-Mg合金枝晶搭接点温度为603.8℃,采用动态凝固应力法测得粗杆和细杆中Al-7Si-0.5Mg合金枝晶搭接点温度分别为615.2℃和607.6℃,两种方法测得结果基本一致。因此,动态凝固应力法测试铸造合金枝晶搭接点是可行的。

关键词： Al-Si合金枝晶搭接点凝固曲线凝固应力