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Adsorptive removal of antibiotics from water using magneticion exchange resin

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Journal of Environmental Sciences 2017年第2期29卷 111-117页

作者： tianyue wang Xun Pan Weiwei Ben Jianbing wang Pin Hou Zhimin Qiang Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Enuironmental SciencesChinese Academy of SciencesBeijing 100085China School of Chemical and Enuironmental Engineering Beijing CampusChina University of Mining and TechnologyBeijing 100083China Foreign Economic Cooperation Office Ministry of Environmental ProtectionBeijing 100035China

The occurrence of antibiotics in the environment has recently raised serious concern regarding their potential threat to aquatic ecosystem and human health. In this study, the magnetic ion exchange（MIEX） resin was applied for removing three commonly-used antibiotics, sulfamethoxazole（SMX）, tetracycline（TCN） and amoxicillin（AMX） from *** results of batch experiments show that the maximum adsorption capacities on the MIEX resin for SMX, TCN and AMX were 789.32, 443.18 and 155.15 μg/m L at 25°C,respectively, which were 2–7 times that for the powdered activated carbon. The adsorption kinetics of antibiotics on the MIEX resin could be simulated by the pseudo-second-order model（R^2= 0.99）, and the adsorption isotherm data were well described by the Langmuir model（R^2= 0.97）. Solution p H exhibited a remarkable impact on the adsorption process and the absorbed concentrations of the tested antibiotics were obtained around the neutral p *** MIEX resin could be easily regenerated by 2 mol/L Na Cl solution and maintained high adsorption removal for the tested antibiotics after regeneration. Anion exchange mechanism mainly controlled the adsorption of antibiotic and the formation of hydrogen binding between the antibiotic and resin can also result in the increase of adsorption capacity. The high adsorption capacity, fast adsorption rate and prominent reusability make the MIEX resin a potential adsorbent in the application for removing antibiotics from water.

关键词： Sulfamethoxazole Tetracycline Amoxicillin Antibiotics MIEX resin Adsorption

Establishment of a novel loach-deodorization technology based on gas chromatography-ion mobility spectroscopy analysis

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FOOD BIOSCIENCE 2023年第3期53卷 3011-3020页

作者： Shao, Juanjuan Yang, Yi wang, tianyue Liu, Yangliu wang, Zhen Zhao, Yuan Sun, Jilu Hebei Agr Univ Coll Sci & Technol Cangzhou 061000 Peoples R China South China Agr Univ Coll Hort Guangzhou 510642 Peoples R China Jiangnan Univ Int Joint Res Ctr Photorespons Mol & Mat Sch Chem & Mat Engn Key Lab Synthet & Biol ColloidsMinist Educ Wuxi 214122 Jiangsu Peoples R China Hebei Agr Univ Coll Food Sci & Technol Baoding 071000 Peoples R China

Fishy odor has been a major limiting factor for the production and commercialization of loach. Herein, this study aims to develop an efficient deodorization process using single-factor experiments and Design-Expert response surface methodology. The deodorization capability is evaluated using gas chromatography-ion mobility spectroscopy (GS-IMS). As a result, the trehalose-sweet wine koji method was selected and the final optimal deodorization conditions were shown as follows: the compound ratio of trehalose to sweet wine koji was 51:1, the content of sweet wine koji was 0.10%, and the deodorization time was 33 min at 17 degrees C. Under the conditions, the final trimethylamine content of loach was reduced by 89%. A total of 29 volatile compounds in loach samples before and after deodorization were identified by GC-IMS, including 11 aldehydes, 8 alcohol, 7 ketones, 1 ester, and 2 olefins. Volatile compounds responsible for fish-like odor, such as hexanal, pentanal, heptanal, benzaldehyde, octanal, nonanal, n-butanol, pentanol, and acetone, were decreased in intensity. Principal component and fingerprint analysis confirmed the deodorization effect of this process on loach was significant (p < 0.05). Collectively, the study developed an efficient loach deodorization method, which will improve the quality of loach production.

关键词： Cypriniformes Deodorants Gas chromatography Ion mobility spectrometry Volatile compounds

Designing novel thin film polycrystalline solar cells for high efficiency:sandwich CIGS and heterojunction perovskite

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Journal of Semiconductors 2017年第1期38卷 71-76页

作者： tianyue wang Jiewei Chen Gaoxiang Wu Dandan Song Meicheng Li State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China Chongqing Materials Research Institute Chongqing 400707China

Heterojunction and sandwich architectures are two new-type structures with great potential for solar ***,the heterojunction structure possesses the advantages of efficient charge separation but suffers from band offset and large interface recombination;the sandwich configuration is favorable for transferring carriers but requires complex fabrication ***,we have designed two thin-film polycrystalline solar cells with novel structures：sandwich CIGS and heterojunction perovskite,referring to the advantages of the architectures of sandwich perovskite（standard）and heterojunction CIGS（standard）solar cells,respectively.A reliable simulation software wxAMPS is used to investigate their inherent characteristics with variation of the thickness and doping density of absorber *** results reveal that sandwich CIGS solar cell is able to exhibit an optimized efficiency of 20.7%,which is much higher than the standard heterojunction CIGS structure（18.48%）.The heterojunction perovskite solar cell can be more efficient employing thick and doped perovskite films（16.9%）than these typically utilizing thin and weak-doping/intrinsic perovskite films（9.6%）.This concept of structure modulation proves to be useful and can be applicable for other solar cells.

关键词： sandwich CIGS solar cell heterojunction perovskite solar cell simulation wxAMPS

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面向人员岸滩行进的三维路径规划算法研究

海洋测绘 2024年第2期44卷 66-71页

作者：董箭王天岳王栋海军大连舰艇学院军事海洋与测绘系辽宁大连116018 海军大连舰艇学院海洋测绘工程军队重点实验室辽宁大连116018 海图信息中心天津300450

针对当前无法为人员岸滩行进提供科学合理的路径规划这一问题,论文基于蚁群算法提出了面向岸滩行进的最优路径规划算法。首先对基本的蚁群算法进行了改良,包括路径搜索方式、信息素更新策略和启发函数的合理设计等,改善了算法的收敛效率... 详细信息

针对当前无法为人员岸滩行进提供科学合理的路径规划这一问题,论文基于蚁群算法提出了面向岸滩行进的最优路径规划算法。首先对基本的蚁群算法进行了改良,包括路径搜索方式、信息素更新策略和启发函数的合理设计等,改善了算法的收敛效率;然后定量结合多类岸滩场路径规划影响因子,构建了满足岸滩行进的代价函数;最终实现了面向岸滩行进的算法构建。该算法可为实现复杂地形条件下岸滩行进的最优路径解算和基于蚁群算法的相关三维路径规划分析研究提供参考借鉴。

关键词：栅格模型岸滩行进三维路径规划蚁群算法十六叉树搜索

Removal of a foreign body by a flexible bronchoscope in children

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Removal of a foreign body by a flexible bronchoscope in chil...

溶胶–凝胶旋涂法制备电致变色智能窗用钛酸锂薄膜

第二十次全国儿科中西医结合学术会议

作者： HAN ZHANG QINZHEN ZHANG NAN YANG tianyue wang ZHIJIA wang BING DAI YUNXIAO SHANG Department of Pediatrics Shengjing Hospital of China Medical University

Objective:To explore the clinical characteristics and the pulmonary imaging and bronchoscopic characteristics of children with a bronchial foreign body and report the advantages of using a fiber bronchoscope(FB) for its diagnosis and removal.A systematic analysis was conducted regarding the clinical characteristics,pulmonary imaging findings,bronchoscopic placement,type of foreign body,and mucosal changes after airway disruption from a foreign ***:The study group comprised 54 children(age:0-7 years) whose foreign bodies were confirmed and removed by FB in the pediatric bronchoscopy room of Shengjing Hospital of China Medical University from September 2014 to August ***:Of the 54 patients,35(65%) were male and 19(35%)were female;the median age was 22 months(range:17-25.5 months),and 45(83%)were under 3 years of *** and/or gasping were main *** breath sounds,wheezing,weakened breath sounds on the affected side and moist rales were main clinical *** was a lack of specific findings in pulmonary imaging characteristics of most *** bronchoscopy,granulation tissue surrounding the foreign body was observed in 42 cases(78%)and the time of foreign body inhalation slightly correlated with the severity of granulation hyperplasia(r = 0.44;P= 0.001).The main adverse reactions occurring during surgery were hypoxia(3 cases;6%).Conclusions:For the diagnosis of a foreign body in children,FB under local anesthesia has higher accuracy than other methods,and it is a safe and effective means to remove a bronchial foreign.

关键词： children bronchi foreign body local anesthesia fiber bronchoscope

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无机材料学报 2021年第5期36卷 471-478页

作者：王天悦王梦颖黄庆姣杨佳明王顺花刁训刚北京航空航天大学能源与动力工程学院北京100191 兰州交通大学材料科学与工程学院兰州730070 北京航空航天大学物理学院北京100191

从可见光到近红外波段透过率可调制的电致变色材料,对于智能窗及其热管理方面的应用来说极具吸引力。钛酸锂是一种有潜力的电致变色阴极材料,但对其在智能窗领域的应用前景还缺乏相关的数据支持。本工作采用溶胶–凝胶旋涂法制备透过率... 详细信息

从可见光到近红外波段透过率可调制的电致变色材料,对于智能窗及其热管理方面的应用来说极具吸引力。钛酸锂是一种有潜力的电致变色阴极材料,但对其在智能窗领域的应用前景还缺乏相关的数据支持。本工作采用溶胶–凝胶旋涂法制备透过率高、结晶性好的钛酸锂(Li_(4)Ti_(5)O_(12))薄膜,通过联用电化学工作站和紫外–可见分光光度计原位表征了其电致变色性能。实验发现所有Li_(4)Ti_(5)O_(12)薄膜对扫描速率等测试条件十分敏感,且有优异的双波段调制性能。此外,Li_(4)Ti_(5)O_(12)薄膜厚度对材料的初始态透过率、调制幅度、响应时间、电压窗口和循环耐久性均有显著影响。其中450 nm厚的Li_(4)Ti_(5)O_(12)着色/褪色响应时间分别为19.1和8.9 s,透过率调制在可见光区(550 nm处)为45%,经过20000 s连续循环,性能未发生明显衰退。Li_(4)Ti_(5)O_(12)薄膜在近红外波段(1000 nm处)的透过率调制高达80%,表现出优秀的节能潜力。本研究成功组装了由灰色至蓝色、循环性能良好的全固态无机电致变色器件:Glass/FTO/Li_(4)Ti_(5)O_(12)/LiNbO3/NiOx/ITO,证明钛酸锂作为电致变色智能窗材料有潜力走向普及应用。

关键词：电致变色 Li_(4)Ti_(5)O_(12) 全固态无机器件循环耐久

磷酸化胞外信号调节激酶在小鼠海马发育过程中的表达及其意义

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吉林大学学报（医学版） 2018年第5期44卷 979-982页

作者：王天月崔晓燕吴骁王丹锦州医科大学附属第三医院血液科辽宁锦州121001 河北省药品检验研究院药理毒理室河北石家庄050011 辽宁何氏医学院实验动物中心辽宁沈阳110163 锦州医科大学人体解剖与组织胚胎学教研室辽宁锦州121001

目的:观察磷酸化胞外信号调节激酶(pERK)在胚龄(E)18d以及生后不同日龄(P)小鼠海马不同阶段的表达,探讨其在海马发育中的可能作用。方法:分别取E 18d和P 1、3、7、14、21和28d小鼠的海马组织,每个时间点均作为观察组,采用免疫组织化学... 详细信息

目的:观察磷酸化胞外信号调节激酶(pERK)在胚龄(E)18d以及生后不同日龄(P)小鼠海马不同阶段的表达,探讨其在海马发育中的可能作用。方法:分别取E 18d和P 1、3、7、14、21和28d小鼠的海马组织,每个时间点均作为观察组,采用免疫组织化学和免疫印迹法、结合图像分析技术检测各时间点海马组织中pERK蛋白表达水平。结果:免疫组织化学检测,pERK蛋白主要在海马齿状回(DG)颗粒细胞层和阿蒙角(CA)锥体细胞层神经元的细胞核中表达。E 18d,海马DG和CA区pERK表达染色浅,排列稀疏,表达水平很低;E 18d^P 7d,pERK染色逐渐加深、密集,pERK表达水平逐渐升高,与其他6个时间点比较,P 7d时pERK表达水平最高(F=34.537,P0.05)。免疫印迹检测,各时间点均有pERK表达,E 18d^P 7d,pERK表达水平逐渐升高,与其他6个时间点比较,P 7d时pERK表达水平最高(F=33.856,P0.05)。结论:小鼠生后早期阶段,即E 18d^P 7d,海马发育明显增速,pERK表达水平也随之逐渐升高,P 7d达高峰,随后逐渐下降直至稳定,pERK参与小鼠海马发育过程中的细胞增殖。

关键词：胞外信号调节激酶海马发育昆明种小鼠免疫组织化学免疫印迹法

表没食子儿茶素没食子酸酯对肥胖型哮喘小鼠气道炎症和Treg/Th17免疫平衡的影响

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吉林大学学报（医学版） 2019年第3期45卷 491-497,I0002页

作者：王天玥周倩兰尚云晓中国医科大学附属盛京医院小儿呼吸内科

目的:探讨表没食子儿茶素没食子酸酯(EGCG)对肥胖型哮喘小鼠调节性T淋巴细胞/辅助性T淋巴细胞17 (Treg/Th17)免疫失衡的调节作用,为EGCG治疗肥胖型哮喘提供依据。方法:40只C57BL/6J小鼠分为正常对照组(采用正常饲料喂养)、肥胖组(采用... 详细信息

目的:探讨表没食子儿茶素没食子酸酯(EGCG)对肥胖型哮喘小鼠调节性T淋巴细胞/辅助性T淋巴细胞17 (Treg/Th17)免疫失衡的调节作用,为EGCG治疗肥胖型哮喘提供依据。方法:40只C57BL/6J小鼠分为正常对照组(采用正常饲料喂养)、肥胖组(采用高脂饲料喂养)、肥胖型哮喘组[采用高脂饲料喂养的同时给予卵白蛋白(OVA)致敏和激发,制备肥胖型哮喘模型],EGCG干预组(在OVA激发前1h给予20mg·kg^-1 EGCG腹腔注射)和地塞米松干预组(在OVA激发前1h给予2mg·kg^-1地塞米松腹腔注射),每组8只。采用无创肺功能仪测定各组小鼠的增强呼气间歇(Penh)值;HE染色观察各组小鼠肺组织病理形态表现,HE染色切片半定量方法进行小鼠气道炎症评分;ELISA法检测各组小鼠血清中脂联素、瘦素和支气管肺泡灌洗液(BALF)中白细胞介素10 (IL-10)、白细胞介素17A (IL-17A)水平;流式细胞术检测各组小鼠脾组织中Th17和Treg百分比。结果:肥胖组小鼠体质量高于正常对照组(P<0.05),为正常对照组小鼠平均体质量的1.67倍。与正常对照组比较,肥胖型哮喘组小鼠Penh值和气道炎症评分均升高(P<0.05),血清中瘦素水平升高(P<0.05),BALF中IL-17A水平升高(P<0.05),IL-10水平降低(P<0.05),脾组织中Th17百分比升高(P<0.05),Treg百分比降低(P<0.05)。与肥胖型哮喘组比较,EGCG干预组小鼠Penh值和气道炎症评分均降低(P<0.05),血清中瘦素水平降低(P<0.05),BALF中IL-17A水平降低(P<0.05),BALF中IL-10水平升高(P<0.05),脾组织中Th17百分比降低(P<0.05),脾组织中Treg百分比升高(P<0.05)。结论:在肥胖型哮喘小鼠中存在Treg/Th17免疫失衡,EGCG能够抑制肥胖型哮喘小鼠的气道炎症及气道高反应性,能够改善Treg/Th17免疫失衡。

关键词：表没食子儿茶素没食子酸酯肥胖哮喘气道炎症调节性T淋巴细胞辅助性T淋巴细胞17

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前提真假对外语违实语义加工的影响

外语教学与研究 2022年第6期54卷 864-876,959页

作者：徐晓东王天乐刘博洋南京师范大学外国语学院江苏省南京市210097

违实句的理解需要构建双重心理表征,这一过程会受句法、语义、语用、语境等多种因素的影响。目前有关违实语义的实证研究主要局限于母语领域。在外语环境下违实语义是否能够顺利激活双重表征,以及前提和语境知识如何影响外语环境下的违... 详细信息

违实句的理解需要构建双重心理表征,这一过程会受句法、语义、语用、语境等多种因素的影响。目前有关违实语义的实证研究主要局限于母语领域。在外语环境下违实语义是否能够顺利激活双重表征,以及前提和语境知识如何影响外语环境下的违实推理,目前尚不清楚。本文采用自定步速阅读技术,考察前提知识的真假以及外语水平的高低如何影响违实推理。研究发现,对于高水平中国外语学习者来说,当前提命题为真时,违实推理能够顺利展开,而当前提命题为假时,违实推理无法正常进行;对于低水平学习者来说,无论前提真假与否,违实推理均无法正常展开。这表明,在外语环境下,违实推理会受语境和外语水平的双重影响。当外语水平达到一定程度时,外语环境下的违实推理与母语环境下的违实推理均受前提知识真假的约束;但当外语水平一般时,违实推理就会遇阻,前提知识也无法对违实推理产生影响。

关键词：违实推理前提真假外语水平自定步速阅读