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Patterning of Triblock Copolymer Film and Its Application for Surface-enhanced Raman Scattering

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Chinese Journal of Polymer Science 2017年第5期35卷 623-630页

作者： Hai-liang Huang 易国斌 xi-hong zu Ben-bin Zhong hong-sheng Luo School of Chemical Engineering and Light Industry Guangdong University of Technology

In this paper, microphase behavior of an ABC triblock copolymer, polystyrene-block-poly（2-vinylpyridine）-block- poly（ethylene oxide）, namely PS-b-P2VP-b-PEO, was systematically studied during spin-coating and solvent vapor annealing based on various parameters, including the types of the solvent, spin speed and thickness. The morphological features and the microdomain location of the different blocks were characterized by atomic force microscope （AFM） and high resolution transmission electron microscopy （HRTEM）. With increasing thickness, the order-order transition from nanopores array to the pattern of nanostripes was observed due to microdomain coarsening. These processes of pattern transformation were based on the selectivity of toluene for different blocks and on the contact time between solvent molecules and the three blocks. This work provides different templates for preparation of gold nanoparticle array on silicon wafer, which can be adopted as an active surface-enhanced Raman scattering （SERS） substrate for poly（3-hexylthiophene）（P3HT）.

关键词： Self-assembly Triblock copolymer Nanopattern Nanoparticle array Raman spectroscopy

Design and fabrication of a new fluorescence enhancement system of silver nanoparticles-decorated aligned silver nanowires

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Rare Metals 2019年第12期38卷 1178-1186页

作者： Jian-Chao Wang hong-Sheng Luo Ming-Hai Zhang xi-hong zu Jie Zhang Yu-xin Gu Guo-Bin Yi School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Advanced Coatings Research and Development China National Electric Apparatus Research Institute Co.Ltd.Guangzhou 510300China

A new substrate,aligned Ag nanowires decorated with silver nanoparticle composite structure(AgNWs@AgNPs),was fabricated to investigate metalenhanced fluorescence(MEF) and its *** new composite structure was fabricated via a three-phase interface assembly method followed by SnCl2 sensitization and AgNO3 reduction *** size and distribution of the nanoparticles on silver nanowires increased with the sensitization and reduction *** formation of AgNPs on the surfaces of AgNWs was confirmed by multiple characterization methods including scanning electron microscopy(SEM),transmission electron microscope(TEM),atomic force microscopy(AFM) and X-ray diffraction(XRD).The results show that the fluorescence intensity of the poly(3-hexylthiophene)(P3HT) on the composite structure was greatly enhanced compared with that on bare glass substrate,and the intensity increased with the increase in particle sizes and *** mechanism was basedo n the increase in excitation rate and the radiation decay *** new type of substrate could serve as a good and efficient MEF substrate for high-performance fluorescence-based devices.

关键词： Fluorescence enhancement Aligned Ag nanowires Self-assembly Mechanism

Surface-enhanced Raman Scattering Effect of Ordered Gold Nanoparticle Array for Rhodamine B with Different Morphologies

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Chinese Journal of Polymer Science 2015年第10期33卷 1470-1476页

作者： xi-hong zu Zhi-hui Jian 易国斌 Hai-liang Huang Ben-bin Zhong hong-sheng Luo Jia-rong Huang Cui Wang School of Chemical Engineering and Light Industry Guangdong University of Technology

In this study, well-ordered gold nanoparticle array on silicon substrate was adopted as an active surface-enhanced Raman scattering substrate for detecting rhodamine B （RB）, and the influence of RB morphologies on surface-enhanced Raman scattering （SERS） properties was discussed. The Au nanoparticle array was prepared by using patterned P4VP nanodomains of poly（styrene-b-4-vinylpyridine）（PS-b-P4VP） diblock copolymer thin films as nanoreactors which is a simple and economical approach. The results show that Raman spectra of RB on the Au nanopaticle array have much stronger intensity than those on the bare silicon substrate by detecting same RB solution. It indicates that the prepared Au nanoparticle array on silicon substrate has a significant Raman enhancement for RB. Interestingly, the Raman intensity of RB from its ethanol solution is much stronger than that from its aqueous solution due to the special morphologies of RB formed in their ethanol solutions. This work provides an effective approach to prepare highly sensitive and stable surface-enhanced Raman scattering substrate.

关键词： Nanoparticle array Rhodamine B Raman spectroscopy Nanowire Nanograss

Reaction behavior of MgO refractory with high-Mn and high-Al steel

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Journal of Iron and Steel Research(International) 2024年第6期31卷 1389-1398页

作者： Ling-zhong Kong Lin zu Jie Yang xi-min Zang xin Yang Ming Kang School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051LiaoningChina

To understand the mechanism of the interfacial reaction between high-Mn and high-Al steel and MgO refractory,a series of laboratory experiments as well as thermodynamic calculations were *** effects of Mn and Al contents in the steel and the reaction time on the interfacial reaction were *** was observed that the erosion of the MgO refractory is caused by the reaction of Al and Mn in the steel with MgO in the refractory,which would lead to the formation of(Mn,Mg)O·Al_(2)O_(3) spinel and(Mn,Mg)O solid *** formation mechanism of the spinel and solid solution is as *** Al in the steel firstly reacts with MgO in the refractory to generate MgO·Al_(2)O_(3) spinel,and then,the spinel reacts with Mn in the steel to form(Mn,Mg)O·Al_(2)O_(3) ***,the MnO in the spinel reacts with the MgO in the inner refractory to form(Mn,Mg)O solid *** addition,only(Mn,Mg)O·Al_(2)O_(3) spinel is present in the interfacial reaction layer of the refractory when the Al content in the steel is sufficient.

关键词： High-Mn high-Al steel MgO refractory Reaction behavior Spinel

Formulation of international standards of Chinese medicine technology:clinical practice guide of Chinese medicine for cough

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Journal of Traditional Chinese Medicine 2024年第2期44卷 396-402页

作者： FANG Hanyu hong Zheng LI Deming ZHANG hongchun SHI Yihang LI xiaojuan SUN Zengtao CHEN Wei ZHANG Chuchu zu Yaqi Beijing University of Chinese medicine Beijing 100029China Department of Traditional Chinese Medicine for Pulmonary Diseases Center of Respiratory MedicineChina-Japan Friendship HospitalBeijing 100029 National Center for Respiratory Medicine Beijing 100029China Department of Traditional Chinese Medicine for Pulmonary Diseases Center of Respiratory MedicineChina-Japan Friendship HospitalBeijing 100029China Tianjin University of Traditional Chinese Medicine Tianjin 301617China Second Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300250China Center for Evidence-based Medicine Beijing University of Chinese MedicineBeijing 100029China Institute of Information on Traditional Chinese Medicine China Academy of Chinese Medical SciencesBeijing 100700China

OBJECTIVE:To formulate the first clinical practice guideline for the treatment of cough using Chinese medicine based on the grading of recommendations assessment,development,and evaluation(GRADE)systematic approach,including clinical evidence,evaluation of ancient literature,and expert ***:In the process of development,the regulation of"evidence-based,consensus-assisted,and empirical"was followed,and a comprehensive systematic approach of recommendation assessment,GRADE,evidence-based evaluation,expert consensus,and the Delphi method was *** the process of guideline development,evidence-based evaluation of ancient literature was included for the first time,and clinical evidence was fully integrated with clinical expert ***:The clinical practice guidelines for the treatment of cough with Chinese herbal medicine were developed after a comprehensive consideration of evidence-based evaluation and expert *** guideline recommendations focused on recommending herbal compound decoctions and Chinese patent medicines for cough in different *** on the GRADE systematic approach,we conducted an evidence-based evaluation of the recommended Chinese patent medicines one by one;meanwhile,the expert consensus method was used to unify the recommendations of ***:Based on clinical evidence,ancient literature evaluation,and expert consensus,a clinical practice guideline for Traditional Chinese Medicine(TCM)in the treatment of cough was developed,providing the first current clinical practice guideline for domestic and foreign TCM and Western medicine practitioners,especially respiratory professionals at home and abroad.

关键词： Medicine Chinese Traditional clinical practice cough practice guide international standard

O_(2) adsorption on Fe_(3)O_(4) (110) surface and effect of gangue element Al doping: combined study of binding experiment and ab initio molecular dynamics

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Journal of Iron and Steel Research(International) 2024年第4期31卷 810-827页

作者： Zheng-jian Liu Hui-qing Jiang Yao-zu Wang Jian-liang Zhang hong-mei Qiao An-yang Zheng Fang-yu Guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Intelligence Science and Technology University of Science and Technology BeijingBeijing 100083China Beijing Shougang Co. Ltd.Qian'an 064404HebeiChina Department of Physics National University of Defense TechnologyChangsha 410128HunanChina

At high temperature,the chemical reaction mechanism at the interface of magnetite and the influence mechanism of gangue element Al on the oxidation performance of magnetite are not *** addition,due to the limitation of existing experimental equipment,it is difficult to clarify the interface reaction mechanism in the oxidation process and the influence mechanism of Al on the surface oxidation reaction of Fe_(3)O_(4) at an atomic scale at high *** surface oxidation reaction mechanism of magnetite and the influence mechanism of Al on the oxidation of magnetite were studied by experiments and AIMD(ab initio molecular dynamics).The experimental results show that the existence of Al_(2)O_(3) will reduce the initial oxidation temperature and comprehensive oxidation performance of *** AIMD results show that aluminum can accelerate the interface reaction rate of Fe_(3)O_(4) in the high-temperature oxidation atmosphere,but the strong Al-O binding ability is not conducive to the transfer of O atoms in the oxidation process.

关键词： Ironmaking Magnetite oxidation Interface reaction Adsorption-Gangue aluminum AIMD

A probabilistic model based on the peak-over-threshold approach for risk assessment of airport controllers’performance

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Journal of Safety Science and Resilience 2024年第1期5卷 110-118页

作者： Lili zu Yijie Lu Min Dong College of Economics and Management Nanjing University of Aeronautics and AstronauticsNanjing 211106China School of Engineering and Applied Science George Washington UniversityWashington DC 20052USA College of Civil Aviation Nanjing University of Aeronautics and AstronauticsNanjing 211106China

Airport tower control plays an instrumental role in ensuring airport ***,obtaining objective,quantitative safety evaluations is challenging due to the unavailability of pertinent human operation *** study introduces a probabilistic model that combines aircraft dynamics and the peak-over-threshold(POT)approach to assess the safety performance of airport *** applied the POT approach to model reaction times extracted from a radiotelephony dataset via a voice event detection *** model couples the risks of tower control and aircraft operation to analyze the influence of human *** data from radiotele-phony communications and the Base of Aircraft Data(BADA)database,we compared risk levels across *** findings revealed heightened airport control risks under low demand(0.374)compared to typical conditions(0.197).Furthermore,the risks associated with coupling under low demand exceeded those under typical de-mand,with the final approach stage presenting the highest risk(4.929×107).Our model underscores the significance of human factors and the implications of mental disconnects between pilots and controllers for safety ***,these consistent findings affirm the reliability of our probabilistic model as an evaluative tool for evaluating the safety performance of airport tower *** results also illuminate the path toward quantitative real-time safety evaluations for airport controllers within the *** recommend that airport regulators focus on the performance of airport controllers,particularly during the final approach stage.

关键词： Safety evaluation Performance Probabilistic model Task demand Airport controller

Human pluripotent stem cell-derived kidney organoids:Current progress and challenges

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World Journal of Stem Cells 2024年第2期16卷 114-125页

作者： hong-Yan Long zu-Ping Qian Qin Lan Yong-Jie Xu Jing-Jing Da Fu-Xun Yu Yan Zha Graduate School Zunyi Medical UniversityZunyi 563000Guizhou ProvinceChina Department of Laboratory Medicine Guizhou Provincial People’s HospitalGuiyang 550002Guizhou ProvinceChina Department of Nephrology Guizhou Provincial People’s HospitalGuiyang 550002Guizhou ProvinceChina Key Laboratory of Diagnosis and Treatment of Pulmonary Immune Diseases National Health CommissionGuizhou Provincial People’s HospitalGuiyang 550002Guizhou ProvinceChina

Human pluripotent stem cell(hPSC)-derived kidney organoids share similarities with the fetal ***,the current hPSC-derived kidney organoids have some limitations,including the inability to perform nephrogenesis and lack of a corticomedullary definition,uniform vascular system,and coordinated exit path-way for urinary ***,further studies are required to produce hPSC-derived kidney organoids that accurately mimic human kidneys to facilitate research on kidney development,regeneration,disease modeling,and drug *** this review,we discussed recent advances in the generation of hPSC-derived kidney organoids,how these organoids contribute to the understanding of human kidney development and research in disease ***,the limitations,future research focus,and applications of hPSC-derived kidney organoids were highlighted.

关键词： Kidney Organoids Human pluripotent stem cell Development Vascular system Disease modeling

Endoscopic-ultrasound-guided biliary drainage with placement of electrocautery-enhanced lumen-apposing metal stent for palliation of malignant biliary obstruction:Updated meta-analysis

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 907-920页

作者： zu-xiang Peng Fang-Fang Chen Wen Tang Xu Zeng hong-Juan Du Ru-xian Pi hong-Ming Liu xiao-xiao Lu Department of Hepatobiliary Surgery Daping HospitalArmy Medical UniversityChongqing 400042China Department of Oncology Chongqing General HospitalChongqing UniversityChongqing 401147China Department of Gastroenterology and Hepatobiliary Surgery People’s Hospital of Fenggang CountyGuizhou 564200Guizhou ProvinceChina Hepatobiliary and Pancreatic Tumor Center Chongqing University Cancer HospitalChongqing 400030China

BACKGROUND Endoscopic ultrasound-guided biliary drainage using electrocautery-enhanced(ECE)delivery of lumen-apposing metal stent(LAMS)is gradually being re-cognized as a viable palliative technique for malignant biliary obstruction after endoscopic retrograde cholangiopancreatography(ERCP)***,most of the studies that have assessed its efficacy and safety were small and *** meta-analyses of six or fewer studies that were published 2 years ago were therefore underpowered to yield convincing *** To update the efficacy and safety of ECE-LAMS for treatment of biliary ob-struction after ERCP *** We searched PubMed,EMBASE,and Scopus databases from the inception of the ECE technique to May 13,*** outcome measure was pooled technical success rate,and secondary outcomes were pooled rates of clinical success,re-intervention,and adverse ***-analysis was performed using a random-effects model following Freeman-Tukey double-arcsine transformation in R soft-ware(version 4.1.3).RESULTS Fourteen eligible studies involving 620 participants were ultimately *** pooled rate of technical success was 96.7%,and clinical success was 91.0%.Adverse events were reported in 17.5%of *** reinter-vention rate was 7.3%.Subgroup analyses showed results were generally *** ECE-LAMS has favorable success with acceptable adverse events in relieving biliary obstruction when ERCP is *** consistency of results across most subgroups suggested that this is a generalizable approach.

关键词： Biliary obstruction Biliary drainage Electrocautery-enhanced lumen-apposing metal stents Endoscopic ultrasound Endoscopic retrograde cholangiopancreatography failure