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Synergistic effects of peroxydisulfate on UV/O3 process for tetracycline degradation:Mechanism and pathways

Chinese Chemical Letters 2024年第10期35卷 434-439页

作者： Fengrui Yang Debing wang Xinying Zhang Jie Zhang Zhichao Wu qiaoying wang State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological Security School of Environmental Science and Engineering Tongji University Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology College of Environment & Safety Engineering Fuzhou University

Tetracycline（TC） as a typical emerging pollutant is becoming a serious threat to the environment and human health. A combined advanced oxidation technology of UV/Ozone（O3）/peroxydisulfate（PDS） process was developed to explore an efficient and economic treatment process of TC in wastewater. Furthermore,the reactive sites and transformation pathways of TC were explored and the toxicity of the intermediates was quantified with a quantitative structure-activity relationship（QSAR） assessment. The degradation performance of TC was substantially enhanced in UV/O3/PDS process with a kobsof 0.0949 min-1,which was 2.3 times higher than UV/O3and 3.2 times than sole UV. The results demonstrated that there was a superior synergistic effect of PDS on UV/O3processes for the degradation of TC. Electron paramagnetic resonance（EPR） analysis and quenching experiments show that·OH, SO4·-, O2·-and1O2all contributed to TC degradation in the UV/O3/PDS process and exhibited a synergistic effect, which inhibited the generation of harmful products. In addition, the UV/O3/PDS system can effectively degrade TC in a wide range of substrate concentrations and pH, and also showed excellent adaptability to various concentrations of anions（Cl-and HCO3-）. This study proves the feasibility of UV/O3/PDS process for treating TC contaminated wastewater with complicated water matrix.

关键词： Degradation Synergistic effect Tetracycline UV/ozonation/peroxydisulfate Wastewater

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双分支特征提取与循环细化的动态场景去模糊

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光电子．激光 2024年第6期35卷 580-587页

作者：陈清江王巧莹西安建筑科技大学理学院陕西西安710055

针对现有的动态场景图像去模糊方法存在的特征提取不准确、未充分利用有效特征的问题,本文提出了一种基于双分支特征提取与循环细化的动态场景图像去模糊网络。整个网络包括特征提取网络、循环细化网络(cyclic refinement network,CRN)... 详细信息

针对现有的动态场景图像去模糊方法存在的特征提取不准确、未充分利用有效特征的问题,本文提出了一种基于双分支特征提取与循环细化的动态场景图像去模糊网络。整个网络包括特征提取网络、循环细化网络(cyclic refinement network,CRN)、图像重建(image reconstruction,IR)3部分。其中,特征提取网络包括模糊图像细节和轮廓特征(contour feature,CF)的提取,以残差单元作为特征提取网络的基本单元;循环细化网络通过交替融合轮廓特征和细节特征(detail feature,DF)来细化特征图,得到模糊图像的细化特征(refinement feature,RF);最后,在图像重建阶段,复用轮廓和细节特征,结合残差学习策略将轮廓特征、细节特征和细化后的特征逐级融合后通过非线性映射的方式重建清晰图像。在广泛使用的动态场景模糊数据集GOPRO上的实验结果表明,该方法的平均峰值信噪比(peak signal to noise ratio,PSNR)达到31.86,平均结构相似度(structure similarity,SSIM)达到0.9473,所提方法复原的图像包含丰富细节,具有更好的去模糊效果,在客观评价指标和主观视觉效果上均优于对比方法。

关键词：卷积神经网络图像去模糊双分支特征提取残差网络

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香蕉MaFLS1基因克隆、生物信息学分析及功能解析

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果树学报 2024年第2期41卷 229-240页

作者：肖伟军胡玉林汪乔英段雅婕胡会刚中国热带农业科学院南亚热带作物研究所·农业农村部热带果树生物学重点实验室·海南省热带园艺产品采后生理与保鲜重点实验室广东湛江524091 华中农业大学园艺林学学院武汉430070

【目的】初步探讨黄酮醇合成酶FLS基因在香蕉果实中生物学功能。【方法】采用RT-PCR和PCR法克隆香蕉MaFLS1基因,对其进行生物信息学分析。运用qRT-PCR的方法研究其表达模式,同源重组构建MaFLS1基因的过表达载体,通过农杆菌介导的叶盘法... 详细信息

【目的】初步探讨黄酮醇合成酶FLS基因在香蕉果实中生物学功能。【方法】采用RT-PCR和PCR法克隆香蕉MaFLS1基因,对其进行生物信息学分析。运用qRT-PCR的方法研究其表达模式,同源重组构建MaFLS1基因的过表达载体,通过农杆菌介导的叶盘法转化Micro-Tom番茄,测定T1代果实中总黄酮含量。【结果】香蕉MaFLS1基因开放阅读框含有1080对碱基,编码359个氨基酸,理论等电点为5.41,预测分子质量为39 436.94 Da,是一种稳定的亲水酸性蛋白,属于α-酮戊二酸依赖性双加酶家族。通过分析香蕉MaFLS1的氨基酸序列,发现其不含信号肽和跨膜结构。系统进化树分析表明,FLS在不同物种间具有高度的氨基酸序列保守性。MaFLS1基因在香蕉果实发育成熟后期高度表达,前期基本不表达。通过测定转基因番茄中总黄酮的含量发现其总黄酮含量极显著高于野生型果实。【结论】MaFLS1在果实成熟后期高度表达,且能够显著增加果实中总黄酮的含量。

关键词：香蕉 MaFLS1 生物信息学功能分析

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A hybrid membrane process for simultaneous thickening and digestion of waste activated sludge

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Frontiers of Environmental Science & Engineering 2010年第3期4卷 272-279页

作者： Zhiwei wang qiaoying wang Zhichao WU Xinhua wang State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China

A hybrid membrane process for simultaneous sludge thickening and digestion(MSTD)was *** one cycle(15 d)of operation under a hydraulic retention time of 1 d,the concentration of mixed liquor suspended solids(MLSS)continuously increased from about 4 g·L^(–1)to 34 g·L^(–1),and the mixed liquor volatile suspended solids(MLVSS)increased from about 3 g·L^(–1)to over 22 g·L^(–1).About 42%of the MLVSS and 39%of the MLSS reduction were *** thickening and digestion effects in the MSTD were further analyzed based on a mass balance *** results showed that biopolymers and cations of biomass were gradually released to the bulk solution during the *** was also found that the capillary suction time,colloidal chemical oxygen demand,soluble microbial products,viscosity,and MLSS had significant positive correlations with the membrane fouling rate,whereas extracellular polymeric substances,polysaccharides,and proteins extracted from biomass had negative impacts on membrane fouling.

关键词： membrane filtration sludge digestion sludge thickening waste activated sludge

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Hydrophilic/underwater superoleophobic graphene oxide membrane intercalated by TiO2 nanotubes for oil/water separation

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Frontiers of Environmental Science & Engineering 2018年第3期12卷 159-168页

作者： Zhichao Wu Chang Zhang Kaiming Peng qiaoying wang Zhiwei wang State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological Security School of Environmental Science and Engineering Tongji University Shanghai 200092 China

Membrane technology for oil/water separation has received increasing attention in recent years. In this study, the hydrophilic/underwater superoleophobic membrane with enhanced water permeability and antifouling ability were fabricated by synergistically assembling graphene oxide （GO） nanosheets and titanium dioxide （TiO2） nanotubes for oil/water separation. GO/TiO2 membrane exhibits hydrophilic and underwater superoleophobic properties with water contact angle of 62° and under water oil contact angle of 162.8°. GO/TiO2 membrane shows greater water permeability with the water flux up to 531 L/ （m^2·h·bar）, which was more than 5 times that of the pristine GO membrane. Moreover, GO/TiO2 membrane had excellent oil/water separation efficiency and anti-oil-fouling capability, as oil residual in filtrate after separation was below 5 mg/L and flux recovery ratios were over 80%.The results indicate that the intercalation of TiO2 nanotubes into adjacent GO nanosheets enlarged the channel structure and modified surface topography of the obtained GO/TiO2 membranes, which improved the hydrophilicity, permeability and anti-oil-fouling ability of the membranes, enlightening the great prospects of GO/TiO2 membrane in oil-water treatment.

关键词： Hydrophilic Superoleophobic Graphene oxide Membrane Titanium dioxide nanotubes Oil-water separation

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Albumin-based Theranostic Nanosystem for Drug Controlled Release and Magnetic Resonance Imaging Guided Therapy

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Journal of Bionic Engineering 2022年第1期19卷 188-196页

作者： qiaoying wang Jiali Cai Zihan Xu Shihui Huang Ruiping Zhou Zhiyong wang Leshan Vocational and Technical College Leshan614000China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of Materials Science and EngineeringCenter for Functional BiomaterialsSun Yat-sen UniversityGuangzhou510275China Department of stomatology Shenzhen Yantian District People’s HospitalShenzhen518081China

Chemotherapy is still a kind of important strategy for cancer treatment,but lacking effective delivery system limits the therapeutic *** to the excellent biocompatibility,albumin has been employed as drug vehicle;however,it has to face complicated synthesis procedures and still needs an effective technology for the drug delivery *** this study,a facile method was utilized to prepare a protein-based theranostic system through the self-assembly of albumins with small molecules and drugs;furthermore,the paramagnetic divalent manganese ions were conjugated on the surface of the nanocomposite through a coordination bond and carried out the magnetic resonance *** nanosystem with a stable structure exhibited about 80 nanometer size and 7.7[Mn]mM-1S-1 T1 relaxivity;moreover,the pH-sensitive drug releasing property and the imaging function empower it with theranostic cancer ***,the nanocomposites effectively entered into the cancer cells and showed superior antitumor ability;and these treated cells exhibited significant T1 *** results suggested that the albumin-based nanosystem is a novel chemotherapy drug delivery vehicle and a promising candidate for magnetic resonance imaging.

关键词： Drug delivery system Magnetic resonance imaging Theranostic therapy Self-assembly

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Cisplatin and paclitaxel co-delivery nanosystem for ovarian cancer chemotherapy

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Regenerative Biomaterials 2021年第3期8卷 133-140页

作者： qiaoying wang Changqiang Wu Xiaoting Li Dixiao Yang Liangjun Shi Department of Medicine Leshan Vocational and Technical CollegeNo.1336Middle Section of Qingyijiang AvenueShizhong DistrictLeshan CitySichuan ProvinceChina Medical Imaging Key Laboratory of Sichuan Province and School of Medical Imaging North Sichuan Medical College55 Dongshun RoadGaoping DistrictNanchongSichuan ProvinceChina

We have designed and developed an effective drug delivery system using biocompatible polymer of poly(ethylene glycol)-polyaspartic acid(mPEG-PAsp)for co-loading the chemotherapy drugs paclitaxel(PTX)and cisplatin(CP)in one *** study aimed to improve the anti-cancer effi-cacy of combinations of chemotherapy drugs and reduce their side ***-PAsp-(PTX/Pt)nano-micelles disperse well in aqueous solution and have a narrow size distribution(37.863.2 nm)in dynamic light scattering(DLS).Drug release profiles found that CP released at pH 5.5 was signifi-cantly faster than that at pH ***-PAsp-(PTX/Pt)nano-micelles displayed a significantly higher tumor inhibitory effect than mPEG-PAsp-PTX nano-micelles when the polymer concentrations reached 50 lg/*** data indicated that polymer micelles of mPEG-PAsp loaded with the combined drug exert synergistic anti-tumor efficacy on SKOV3 ovarian cells via different action *** from our studies suggested that mPEG-PAsp-(PTX/Pt)nano-micelles are promising alternatives for carrying and improving the delivery of therapeutic drugs with different water solubilities.

关键词： drug delivery ovarian cancer co-delivery nanosystem paclitaxel combination chemotherapy

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特色新品种“香粉3号”蕉果实品质评价

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中国南方果树 2024年第5期53卷 80-85页

作者：汪乔英胡玉林任小玉肖伟军胡会刚中国热带农业科学院南亚热带作物研究所/海南省热带园艺产品采后生理与保鲜重点实验室/农业农村部热带果树生物学重点实验室广东湛江524091 华中农业大学园艺林学学院武汉430070

“香粉3号”“香粉1号”蕉同属龙牙蕉(AAB),果香浓郁,果肉细腻,糖度高,口感好。为了明确“香粉3号”蕉的果实品质优势,以“香粉1号”蕉为对照,在断蕾后15、25、45、85(青熟)、88 d(完熟)等5个时期测定比较两个品种可溶性糖、可滴定酸、... 详细信息

“香粉3号”“香粉1号”蕉同属龙牙蕉(AAB),果香浓郁,果肉细腻,糖度高,口感好。为了明确“香粉3号”蕉的果实品质优势,以“香粉1号”蕉为对照,在断蕾后15、25、45、85(青熟)、88 d(完熟)等5个时期测定比较两个品种可溶性糖、可滴定酸、维生素C、总黄酮、色氨酸含量,以及超氧化物歧化酶、过氧化氢酶、过氧化物酶和苯丙氨酸解氨酶等抗氧化相关酶活性。结果表明,果实生长发育过程中,“香粉3号”果肉的可溶性糖、可滴定酸、维生素C、总黄酮等物质含量均普遍高于“香粉1号”;断蕾后88 d(完熟),“香粉3号”果肉的可溶性糖、维生素C、总黄酮显著高于“香粉1号”(p<0.05),两个品种色氨酸含量无显著性差异;该时期“香粉3号”果肉的过氧化氢酶和过氧化物酶活性显著高于“香粉1号”(p<0.05)。说明“香粉3号”果实品质较优,抗氧化酶活性较强,具有推广潜力。

关键词：香粉3号香粉1号龙牙蕉可溶性糖抗氧化酶活性

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Dynamic analysis of axle box bearings on the high-speed train caused by wheel-rail excitation

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Applied Mathematics and Mechanics(English Edition) 2024年第3期45卷 441-460页

作者： qiaoying MA Shaopu YANG Yongqiang LIU Baosen wang Zechao LIU State Key Laboratory of Mechanical behavior and System Safety of Traffic Engineering Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China School of Transportation Shijiazhuang Tiedao UniversityShijiazhuang 050043China School of Mechanical Engineering Shijiazhuang Tiedao UniversityShijiazhuang 050043China

To explore the impact of wheel-rail excitation on the dynamic performance of axle box bearings,a dynamic model of the high-speed train including axle box bearings is ***,the dynamic response characteristics of the axle box bearing are *** investigation focuses on the acceleration characteristics of bearing vibration under excitation of track irregularities and wheel *** addition,experiments on both normal and faulty bearings are conducted separately,and the correctness of the model and some conclusions are *** to the research,track irregularity is unfavorable for bearing fault detection based on resonance *** the same speed conditions,the acceleration peak of bearing is inversely proportional to the length of the wheel flat and directly proportional to its *** paper will contribute to a deeper understanding of the dynamic performance of axle box bearings.

关键词： high-speed train track irregularity wheel flat dynamic simulation

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Insect-specific RNA virus affects the stylet penetration activity of brown citrus aphid(Aphis citricidus)to facilitate its transmission

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Insect Science 2024年第1期31卷 255-270页

作者： Xin An qiaoying Gu Jing wang Tengyu Chang Wei Zhang Jin-Jun wang Jinzhi Niu Key Laboratory of Entomology and Pest Control Engineering College of Plant ProtectionAcademy of Agricultural ScienceSouthwest UniversityChongqingChina

Sap-sucking insects often transmit plant viruses but also carry insect viruses,which infect insects but not *** impact of such insect viruses on insect host biology and ecology is largely ***,we identified a novel insect-specific virus carried by brown citrus aphid(Aphis citricidus),which we tentatively named Aphis citricidus picornavirus(AcPV).Phylogenetic analysis discovered a monophyletic cluster with AcPV and other unassigned viruses,suggesting that these viruses represent a new family in order *** infection with AcPV triggered aphid antiviral immunity mediated by RNA interference,resulting in asymptomatic ***,we found that AcPV was transmitted horizontally by secretion of the salivary gland into the feeding sites of *** influenced aphid stylet behavior during feeding and increased the time required for intercellular penetration,thus promoting its transmission among aphids with plants as an intermediate *** gene expression results suggested that this mechanism was linked with transcription of salivary protein genes and plant defense hormone ***,our results show that the horizontal transmission of AcPV in brown citrus aphids evolved in a manner similar to that of the circulative transmission of plant viruses by insect vectors,thus providing a new ecological perspective on the activity of insect-specific viruses found in aphids and improving the understanding of insect virus ecology.

关键词： electrical penetration graph feeding behavior insect virus transmission Picornavirales salivary protein

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