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Chinese Journal of Chemical Engineering 2020年第7期28卷 1981-1993页

作者： Haowei Huang dexuan dong Weijie Li Xinya Zhang Li Zhang Ying Chen Xinxin Sheng Xiang Lu Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China School of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510640China Key Laboratory of Polymer Processing Engineering of the Ministry of Education National Engineering Research Center of Novel Equipment for Polymer ProcessingSouth China University of TechnologyGuangzhou 510641China

The effect of Ti3C2 MXene nanosheets on the intumescent flame retardant(IFR)poly(lactic acid)(PLA)composites was investigated among a series of PLA/IFR/MXene,which were prepared by melt blending 0-2.0 wt%MXene,10.0 wt%-12.0 wt%IFR and PLA *** results of limiting oxygen index(LOI)and vertical burning(UL-94)discover that the combination of 0.5 wt%MXene and 11.5 wt%IFR synergistically improves the fire safety of PLA to reach UL-94 V-0 rating with LOI value of 33.0%.The PLA/IFR/MXene composites perform an obvious reduction in peak of heat release rate(HRR)in cone calorimeter tests(CCTs).Furthermore,the carbon residues after CCTs were characterized by scanning electron microscope(SEM),laser Raman spectroscopy(LRS),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).It is demonstrated that both the titanium composition of the MXene structure and the characteristics of the two-dimensional material enhance the PLA/IFR/MXene composite materials’ability to produce a dense barrier layer to resist burnout during thermal degradation.

关键词： MXene Poly(lactic acid) Intumescent flame retardant Synergistic effect

Synthesis of Ag-SiO_2 composite nanospheres and their catalytic activity

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Science China Chemistry 2014年第6期57卷 881-887页

作者： HAN QingYan LI GuiAn WANG dexuan HE EnJie dong Jun GAO Wei LI JunNa LIU TingZhuo ZHANG ZhongYue ZHENG HaiRong School of Physics and Information Technology Shaanxi Normal University

A simple,mild,and time-saving method is employed to synthesize Ag-SiO2 composite nanospheres with Ag nanoparticles uniformly distributed on the surface of SiO2 *** chemical elements and the morphology of Ag-SiO2 composite nanospheres were analyzed with transmission electron microscopy(TEM),X-ray power diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).On the surface of Ag-SiO2 composite nanospheres,silane coupling agent(KH-550)is introduced as an intermediary to connect the surfaces of SiO2 nanospheres and Ag nanoparticles,which is also helpful for avoiding the aggregation of Ag *** is found that Ag-SiO2 composite nanospheres have very good catalytic properties for the reduction of organic dyes,which may have potential application in wastewater treatment.

关键词： highly dispersed Ag-SiO2 composite nanospheres catalysis

A 4-bp Insertion at ZmPLA 1 Encoding a Putative Phospholipase A Generates Haploid Induction in Maize

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Molecular Plant 2017年第3期10卷 520-522页

作者： Chenxu Liu Xiang Li dexuan Meng Yu Zhong Chen Chen Xin dong Xiaowei Xu Baojian Chen Wei Li Liang Li Xiaolong Tian Haiming Zhao Weibin Song Haishan Luo Qinghua Zhang Jinsheng Lai Weiwei Jin Jianbing Yan Shaojiang Chen National Maize Improvement Center of China Key Laboratory of Crop Heterosis and Utilization (MOE) China Agricultural University No. 2 Yuan Ming Yuan West Road Haidian District Beijing 100193 China National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 China Maize Research Institute Chongqing Academy of Agricultural Sciences Baishiyi Town Jiulongpo District Chongqing 401329 China These aut-hors contributed equally to this article.

Maize is one of the most important crops in the world and is also an essential raw material for the food, fuel, and fodder industries. Maize hybrids are widely used today, and gain of elite inbred lines is a crucial s... 详细信息

关键词： A 4-bp Insertion ZmPLA1 Encoding Putative Phospholipase

Study Synthesization of Ag-SiO2 Nanocomposite Spheres and their Catalytic Activity

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Study Synthesization of Ag-SiO2 Nanocomposite Spheres and th...

Comparison of nonhuman primates identified the suitable model for COVID-19

2013年（第五届）西部光子学学术会议

作者： Li GuiAn Han QingYan Wang dexuan Lin Xue Li JunNan Liu TingZhuo He EnJie dong Jun Zhang ZhongYue Zheng HaiRong School of Physics and Information Technology Shaanxi Normal University

＜Abstract＞A simple, mild, and time-saving method was employed to synthesize Ag-SiO2 nanocomposite spheres with Ag nanoparticles distributing on the surface of SiO2 nanoparticles, uniformly. At the surface of Ag-SiO2 nanocomposite spheres, a silane coupling agent （KH-550） acts as an intermediary to connect surface of SiO2 nanospheres （NSs） and Ag nanoparticles, which is also helpful for avoiding the aggregation of Ag nanoparticles. Ag-SiO2 nanocomposite spheres were found to have very good catalytic properties for the reduction of organic dyes, which may have potential find application in wastewater treatment techniques.

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Signal Transduction and Targeted Therapy 2020年第1期5卷 1102-1110页

作者： Shuaiyao Lu Yuan Zhao Wenhai Yu Yun Yang Jiahong Gao Junbin Wang dexuan Kuang Mengli Yang Jing Yang Chunxia Ma Jingwen Xu Xingli Qian Haiyan Li Siwen Zhao Jingmei Li Haixuan Wang Haiting Long Jingxian Zhou Fangyu Luo Kaiyun Ding Daoju Wu Yong Zhang Yinliang dong Yuqin Liu Yinqiu Zheng Xiaochen Lin Li Jiao Huanying Zheng Qing Dai Qiangming Sun Yunzhang Hu Changwen Ke Hongqi Liu Xiaozhong Peng National Kunming High-level Biosafety Primate Research Center Institute of Medical BiologyChinese Academy of Medical Sciences and Peking Union Medical CollegeYunnanChina State Key Laboratory of Medical Molecular Biology Department of Molecular Biology and BiochemistryInstitute of Basic Medical SciencesMedical Primate Research CenterNeuroscience CenterChinese Academy of Medical SciencesSchool of Basic MedicinePeking Union Medical CollegeBeijingChina Medical Key Laboratory for Repository and Application of Pathogenic Microbiology Guangdong Provincial Center for Disease Control and PreventionGuangzhouChina

Identification of a suitable nonhuman primate(NHP)model of COVID-19 remains ***,we characterized severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection in three NHP species:Old World monkeys Macaca mulatta(***)and Macaca fascicularis(***)and New World monkey Callithrix jacchus(***).Infected *** and *** showed abnormal chest radiographs,an increased body temperature and a decreased body *** genomes were detected in swab and blood samples from all *** load was detected in the pulmonary tissues of *** and *** but not ***,among the three animal species,*** showed the strongest response to SARS-CoV-2,including increased inflammatory cytokine expression and pathological changes in the pulmonary ***,these data revealed the different susceptibilities of Old World and New World monkeys to SARS-CoV-2 and identified *** as the most suitable for modeling COVID-19.

关键词： acute respiratory COV

一株寒地高效解无机磷细菌的分离鉴定及拮抗作用

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微生物学报 2020年第8期60卷 1672-1682页

作者：朱德旋杜春梅董锡文薛春梅王瑞佳木斯大学生命科学学院黑龙江佳木斯154007 佳木斯大学应用微生物研究所黑龙江佳木斯154007

【目的】从北方寒地种植的不同农作物根际土壤中分离高效解磷的细菌,为微生物制剂和磷肥的开发提供适于本地区的优良菌种。【方法】通过初筛和复筛从26株解磷菌中筛选获得一株高效解磷细菌,对其进行生理生化和分子生物学鉴定,同时采用... 详细信息

【目的】从北方寒地种植的不同农作物根际土壤中分离高效解磷的细菌,为微生物制剂和磷肥的开发提供适于本地区的优良菌种。【方法】通过初筛和复筛从26株解磷菌中筛选获得一株高效解磷细菌,对其进行生理生化和分子生物学鉴定,同时采用钼蓝比色法测定解磷能力。采用平板对峙法测定拮抗植物病原菌能力。【结果】通过筛选后获得的菌株B51-7经鉴定为伯克霍尔德菌属。菌株在发酵液中可溶性磷含量最高达到832.74 mg/L,同时具有很强的广谱抑菌作用,抑菌率最高为89.71%,可以显著促进水稻生长。【结论】菌株B51-7是一株具有生物防治作用的高效解磷细菌,可应用于生物菌肥和生防制剂中。

关键词：寒地解磷菌植物病原菌拮抗作用

子宫腺肌病患者子宫肌层纤维化程度与痛经的相关性

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中华妇产科杂志 2018年第10期53卷 689-693页

作者：董千靖郑德璇沈雪汪沙首都医科大学附属北京妇产医院妇科微创中心 100006

目的探讨子宫腺肌病子宫肌层纤维化程度与痛经的相关性。方法选取2015年7月至2016年12月于首都医科大学附属北京妇产医院，因子宫腺肌病行子宫切除术的患者30例作为子宫腺肌病组，选择同期因子宫颈上皮内瘤变Ⅲ级行子宫切除术的患者28... 详细信息

目的探讨子宫腺肌病子宫肌层纤维化程度与痛经的相关性。方法选取2015年7月至2016年12月于首都医科大学附属北京妇产医院，因子宫腺肌病行子宫切除术的患者30例作为子宫腺肌病组，选择同期因子宫颈上皮内瘤变Ⅲ级行子宫切除术的患者28例作为对照组，收集两组患者术前痛经的视觉模拟评分法（VAS）评分，采用改良Masson染色法和免疫组化二步法分别检测两组患者子宫肌层中的胶原纤维面积比率和Ⅰ型胶原蛋白的表达水平。结果（1）纤维化程度分析：胶原纤维面积比率及Ⅰ型胶原蛋白的表达水平在子宫腺肌病组患者肌层中分别为（34．5±5．1）％、0．23±0．06，高于对照组[分别为（26．7±10．1）％、0．18±0．08]，分别比较，差异均有统计学意义（P均〈0．05）。（2）纤维化程度与痛经的相关性：胶原纤维面积比率及Ⅰ型胶原蛋白的表达水平在子宫腺肌病组中的重度痛经、中度痛经、无一轻度痛经患者分别为（35．3±4．3）％、0．25±0．05，（35．7±3．2）％、0．26±0．06，（25．0±2．9）％、0．15±0．03，无～轻度痛经者与中度痛经者、重度痛经者之间均有差异（P均〈0．01）；且胶原纤维面积比率及I型胶原蛋白表达水平与痛经程度均呈正相关，相关系数分别为r胶原纤维面积=0．50、rⅠ型胶原蛋白=0．50（P均〈0．05）。结论子宫腺肌病子宫肌层发生了明显纤维化，胶原纤维面积比率及I型胶原蛋白表达均高于正常，且与痛经VAS评分呈正相关；子宫腺肌病患者痛经的发生可能与肌层纤维化形成有关。

关键词：子宫腺肌病纤维化痛经胶原Ⅰ型

PI3K/Akt信号转导通路与卵巢癌顺铂耐药相关性的研究

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天津医药 2011年第4期39卷 361-363页

作者：张栋孔德璇和珍珍瞿全新天津医科大学一中心临床学院妇产科 300192

目的:研究卵巢癌顺铂(DDP)耐药与磷脂酰肌醇3-激酶(PI3K)/蛋白激酶B(Akt)信号转导通路的关系。方法:根据LY294002作用浓度将SKOV3和SKOV3/DDP细胞分别分为5μmol/L+DDP、10μmol/L+DDP、20μmol/L+DDP、40μmol/L+DDP、DDP组及对照组。MTT法检测40μmol/L LY294002对SKOV3和SKOV3/DDP细胞DDP敏感性的影响;Western blot法检测SKOV3和SKOV3/DDP细胞各实验组PI3K、Akt表达水平。结果:SKOV3和SKOV3/DDP细胞经LY29400240μmol/L作用后,对DDP敏感性分别增加了67.36%、76.56%。LY294002可降低SKOV3和SKOV3/DDP细胞中PI3K和Akt表达。SKOV3细胞对照组PI3K和Akt蛋白相对浓度值均低于SKOV3/DDP细胞对照组(t分别为26.005和23.477,均P<0.05)。结论:PI3K/Akt信号通路异常与卵巢癌DDP耐药有关,抑制PI3K/Akt信号通路能增强卵巢癌DDP敏感性。

关键词：卵巢肿瘤癌顺铂抗药性,肿瘤细胞系,肿瘤 1-磷脂酰肌醇3-激酶蛋白激酶类

长沙奥托软启动器在斗轮机皮带控制系统中的应用

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哈尔滨轴承 2011年第1期32卷 59-60页

作者：闫得轩李东哈尔滨众鑫重型机器有限责任公司研究所黑龙江哈尔滨150060

使用长沙奥托QB42-110全数字交流电机软启动器,对悬臂皮带驱动机构电动机进行软启动控制,使得输出电压平稳,实现电机使用最小启动电流,得到最佳转矩,平稳起停。

关键词：斗轮机软启动器控制系统

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一株寒地高效解无机磷细菌发酵条件优化

北方园艺 2020年第10期 45-50页

作者：朱德旋杜春梅董锡文李玉婷张晓丹高红妍佳木斯大学生命科学学院应用微生物研究所中-乌合作实验室黑龙江佳木斯154007

为了探究解无机磷细菌B51-7最佳发酵培养条件,以发酵液初始pH、碳源、氮源和培养温度为研究对象,以钼蓝比色法测定发酵液中可溶性磷含量为评价指标,通过单因素试验和正交实验确定其发酵条件的最佳组合。结果表明:初始pH 4.5、30℃、10g... 详细信息

为了探究解无机磷细菌B51-7最佳发酵培养条件,以发酵液初始pH、碳源、氮源和培养温度为研究对象,以钼蓝比色法测定发酵液中可溶性磷含量为评价指标,通过单因素试验和正交实验确定其发酵条件的最佳组合。结果表明:初始pH 4.5、30℃、10g·L^-1葡萄糖、0.1g·L^-1蛋白胨培养条件下,菌株B51-7发酵液中可溶性磷含量最高;菌株B51-7解磷能力的最优发酵条件组合为初始pH 4.0,葡萄糖12g·L^-1,蛋白胨0.05g·L^-1,温度30℃。该研究为菌株B51-7解磷能力的掌握以及其在微生物磷肥的开发与利用提供了重要的参考依据。

关键词：寒地细菌解无机磷能力发酵条件优化