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Nuclear Science and Techniques 2024年第9期35卷 103-114页

作者： Ying Sun Wen-Rui Wang Dan-Yi li Si-Yi Xu lin lin Man-li Lu Kai fan Chen-Yang Xing lin-fan li Ji-Hao li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China School of Architecture and Materials Chongqing College of Electronic EngineeringChongqing 401331China Center for Stretchable Electronics and NanoSensors Key Laboratory of Optoelectronic Devices and Systems of Ministry of EducationCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China

This paper presents a superhydrophobic melamine(ME)sponge(ME-g-PLMA)prepared via high-energy radiation-induced in situ covalent grafting of long-alkyl-chain dodecyl methacrylate(LMA)onto an ME sponge for efficient oil–water *** obtained ME-g-PLMA sponge had an excellent pore structure with superhydrophobic(water contact angle of 154°)and superoleophilic *** can absorb various types of oils up to 66–168 times its *** ME-g-PLMA sponge can continuously separate oil slicks in water by connecting a pump or separating oil underwater with a gravity-driven *** addition,it maintained its highly hydrophobic properties even after long-term immersion in different corrosive solutions and repeated oil *** modified ME-g-PLMA sponge exhibited excellent separation properties and potential for oil spill cleanup.

关键词： Radiation-induced graft polymerization Oil–water separation Sponge Superhydrophobic

Preparation of antibacterial non-woven AgNCs@PP-g-PAA via radiation method

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Nuclear Science and Techniques 2023年第9期34卷 21-31页

作者： Fei Han Wen-Rui Wang Dan-Yi li Si-Yi Xu Ying Su lin lin Man-li Lu Ji-Hao li lin-fan li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Wuwei Institute of New Energy Wuwei 733000China

With the growing threat of airborne epidemics,there has been an increasing emphasis on personal *** serve as our primary external defense against bacteria and viruses that might enter the respiratory ***,it’s crucial to develop a polypropylene(PP)nonwoven fabric with quick antibacterial capabilities as a key component for *** study introduces silver nanoclusters(AgNCs)into non-woven PP using radiation technology to infuse antibacterial ***,a solid ligand(PP-g-PAA)was procured via radiation grafting of the ligand polyacrylic acid(PAA),which was incorporated into the nonwoven PP with the aid of a crosslinking agent at a lower absorbed ***,AgNCs were synthesized in situ on PP-g-PAA via an interaction between PAA and AgNCs,leading directly to the formation of AgNCs@PP-g-PAA *** to the hydrophilicity of PAA,AgNCs@PP-g-PAA maintains good moisture permeability even when the voids are heavily saturated with PAA gel,preventing droplet aggregation by diffusing droplets on the surface of the *** feature enhances the comfort of the *** importantly,due to the incorporation of AgNCs,AgNCs@PP-g-PAA demonstrates outstanding antibacterial effects against Escherichia coli and Staphylococcus aureus,nearly achieving an instant“touch and kill”*** conclusion,we synthesized a modified nonwoven fabric with significant antibacterial activity using a simple synthetic route,offering a promising material that provides improved personal protection.

关键词： Silver nanoclusters Radiation technology Antibacterial

The synergy reduction and self-assembly of graphene oxide via gamma-ray irradiation in an ethanediamine aqueous solution

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Nuclear Science and Techniques 2016年第3期27卷 80-87页

作者： Ya-Lei He Ji-Hao li lin-fan li Jing-Bo Chen Jing-Ye li School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China CAS Center for Excellence on TMSR Energy System Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China

Gamma-ray irradiation technique is an effective method for preparing graphene aerogel(GA).The effective reduction and self-assembly of graphene oxide(GO) sheets into 3D porous GA in ethylenediamine(EDA) aqueous solution under the protection of nitrogen have been achieved via γ-ray *** reduction degree and self-assembly process,which can be controlled by varying EDA dose and irradiation dose,are investigated by X-ray photoelectron spectroscopy,Fourier transform infrared spectroscopy,X-ray diffractometer,and thermogravimetric analysis.A reduction mechanism is proposed for interactions among EDA molecules,active radicals from the radiolysis of water,and oxygen-containing groups on GO sheets.

关键词： γ射线照射氧化石墨乙二胺自组装协同还原溶液傅里叶变换红外光谱 X射线光电子能谱

Radiation graft of acrylamide onto polyethylene separators for lithium-ion batteries

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Nuclear Science and Techniques 2017年第6期28卷 108-114页

作者： Xiao-li Miao Ji-Hao li Qun Xiang Jia-Qiang Xu lin-fan li Jing-Ye li Shanghai Institute of Applied Physics Chinese Academy of Science Department of Chemistry College of ScienceShanghai University

To improve the affinity between separators and electrolyte in lithium-ion battery,microporous polyethylene(PE) separator was grafted of polyacrylamide(PAAm) by *** structure of the PAAmgrafted PE separators(denoted as PE-g-PAAm) was characterized by Fourier transform infrared spectroscopy and X-ray photoelectron *** of the pristine PE and PE-g-PAAm were tested by scanning electron microscope,liquid electrolyte uptake and lithium-ion *** performances of the grafted PE separators(up to 0.76 × 10^(-3) S/cm of ionic conductivity at room temperature) were much better than pristine PE,and performance of the battery with the grafted separator behaved better than with the virgin PE separator,under the same condition(assembled in Ar-filled glove box).

关键词： lithium-ion battery Polyethylene Acrylamide Irradiation graft Separator

Simple synthesis of silver nanocluster composites AgNCs@PE-g-PAA by irradiation method and fluorescence detection of Cr^(3+)

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Nuclear Science and Techniques 2023年第5期34卷 101-111页

作者： Fei Han Wen-Rui Wang Dan-Yi li Mou-Hua Wang Ji-Hao li lin-fan li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Wuwei Institute of New Energy Wuwei 733000China

Silver nanoclusters(AgNCs)are a new type of nanomaterials with similar properties to molecules and unique *** applications of AgNCs can be significantly expanded by combining them with different matrix materials to obtain AgNC *** irradiation techniques,we developed a simple two-step method for preparing silver nanocluster ***,polyacrylic acid(PAA)chains were grafted onto the surface of a PE film as templates(PE-g-PAA).Subsequently,silver ions were reduced in situ on the surface of the template material to obtain the AgNC composites(AgNCs@PE-g-PAA).The degree of AgNC loading on the composite film was easily controlled by adjusting the reaction *** loaded AgNCs were anchored to the carboxyl groups of the PAA and wrapped in the graft *** particle size of the AgNCs was only 4.38±0.85 nm,with a very uniform particle size *** AgNCs@PE-g-PAA exhibited fluorescence characteristics derived from the *** fluorescence of the AgNCs@PE-g-PAA was easily quenched by Cr^(3+)*** composite can be used as a fluorescence test paper to realize visual detection of Cr^(3+).

关键词： Silver nanoclusters Irradiation grafting Irradiation reduction In situ preparation Fluorescence detection

Radiation-induced cross-linking:a novel avenue to permanent 3D modification of polymeric membranes

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Nuclear Science and Techniques 2021年第7期32卷 31-45页

作者： Yu Gu Bo-Wu Zhang Zhen Guo Ji-Hao li Ming Yu lin-fan li Jing-Ye li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials College of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234China University of Chinese Academy of Sciences Beijing 100049China

Membrane fouling is always the biggest problem in the practice of membrane separation technologies,which strongly impacts their applicability,separation efficiency,cost effectiveness,and service ***,a simple but effective 3D modification approach was designed for permanently functionalizing polymeric membranes by directly cross-linking polyvinyl alcohol(PVA)under gamma-ray irradiation at room temperature without any *** the modification,a PVA layer was constructed on the membrane surface and the pore inner surface of polyvinylidene fluoride(PVDF)*** endowed them with good hydrophilicity,low adsorption of protein model foulants,and easy recoverability *** addition,the pore size and distribution were customized by controlling the PVA concentration,which enhanced the rejection ability of the resultant membranes and converted them from microfiltration to *** crosslinked PVA layer was equipped with the resultant membranes with good resistance to chemical cleaning by acidic,alkaline,and oxidative reagents,which could greatly prolong the membrane service ***,this approach was demonstrated as a universal method to modify PVDF membranes with other hydrophilic macromolecular modifiers,including polyethylene glycol,sodium alginate,and polyvinyl *** modification of the membranes effectively endowed them with good hydrophilicity and antifouling properties,as expected.

关键词： Ultrafiltration membrane Antifouling 3D modification Gamma-ray Cross-linking

Electron-beam radiation effects on the structure and properties of polypropylene at low dose rates

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Nuclear Science and Techniques 2018年第6期29卷 101-109页

作者： Heng-Ti Wang Hai-Qing Jiang Rong-fang Shen Xiao-Jun Ding Cong Zhang lin-fan li Jing-Ye li Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China University of Chinese Academy of Sciences Beijing 100049China

While the high-energy radiation effects on polypropylene, which are crucial for the cable industry for nuclear power plants, have been thoroughly studied, the property changes of PP at low-dose-rate electron-beam irradiation are far from elucidated. Herein, the influence of electron-beam irradiation on the structure and properties of PP was examined. The static EB irradiation conditions were 1.2 MeV at a low dose rate of 20 kGy/h to achieve absorbed doses ranging from 45, to 60, 100, and 200 *** molecular structure was first evaluated by measuring the carboxyl index and the relative radical concentrations via Fourier transform infrared spectroscopy and electron spin resonance, respectively. Mechanical, differential scanning colorimetric, and rheological tests were carried out to further investigate the changes in the properties(tensile, crystalizing, and viscoelastic properties) of irradiated PP, which showed good agreement with the structural analysis results. We found that radio-oxidative degradation(chain scission) was predominant, which can be due to the low dose rate facilitating oxygen diffusion into the PP matrix during electron-beam irradiation.

关键词：性质变化低剂量率聚丙烯电子横梁结构放射 Fourier

Stability study of Disperse Blue 79 under ionizing radiation

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Nuclear Science and Techniques 2020年第2期31卷 113-123页

作者： Xiao-Jun Ding Ming Yu Xin Zheng Cui-Cui Ye Yu Gu Man-li Lu Bo-Wu Zhang lin-fan li Jing-Ye li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China The Education Ministry Key Lab of Resource Chemistry Shanghai Key Lab of Rare Earth Functional MaterialsCollege of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234China

Ionizing radiation is a promising method for dye degradation or textile coloration using commercial azo dyes and small molecular weight organic dyes. Thus, the stability of the molecular structure of an azo dye is important under ionizing radiation. Disperse Blue 79, as an example azo dyes, was irradiated with gamma rays or electron beam (EB) to investigate the radiation-induced effects on the molecular structure. Ultraviolet visible spectroscopy (UV Vis), nuclear magnetic resonance (NMR) spectra analysis, and mass spectrometry (MS) studies indicated that acetoxy and methoxyl were easily cleaved on the irradiation of the aqueous dye solution but retained a stable structure on the irradiation of the powder form. Gamma rays and EB showed similar effects on the decomposition process. Chromaticity changes using the Lab* method showed that the dye turned to dark yellow and the value of b* of the irradiated dyes increased with the increasing absorbed dose, which indicated that Disperse Blue 79 could be partly decomposed in an aqueous solution This work was nancially supported by the National Natural Science Foundation of China (Nos. 11875313, 11605274, and 11575277). Xiao-Jun Ding and Ming Yu contributed equally to this work. & Jing-Ye li jyli@*** 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 2 University of Chinese Academy of Sciences, Beijing 100049, China 3 The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Lab of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China with an absorbed dose of 10 kGy. Furthermore, the results demonstrated that the chemical stability of the Disperse Blue 79 under ionizing radiation are different in its powder form with the dye in the aqueous solution.

关键词： Azo dyes Disperse Blue 79 Stability

Endoscopic patterns of gastric mucosa and its clinicopathological significance

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World Journal of Gastroenterology 2003年第11期9卷 2552-2556页

作者： Jian-Min Yang Lei Chen Yu-lin fan Xiang-Hong li Xin Yu Dian-Chun fang, Gastroenterology Research Center, Southwest Hospital, Third Military Medical University, Chongqing 400038, China Gastroenterology Research Center Southwest Hospital Third Military Medical University Chongqing 400038 China. jianminyang@***

AIM: To explore the correlation of magnifying endoscopic patterns and histopathology, Helicobacter pylori (H pylori) infection of the gastric ***: Gastric mucosal patterns in 140 patients with chronic gastritis were studied using Olympus GIF-Q240Z magnifying endoscope. Histopathological examination, rapid urease test and Warrthin-Starry staining were taken with biopsy samples from the magnified sites of stomach. The magnifying endoscopic patterns were compared with histopathological results and H pylori ***: The pit patterns of gastric mucosa were classified as types A (round spot), B (short rod), C (branched), D (reticular) and E (villus). The detection rate of chronic atrophic gastritis (CAG) by magnifying endoscopy was 94.3 % (33/35),which was significantly higher than that by routine endoscopy (22.9 %, 8/35) (P<0.01). The pit patterns of 31 cases of intestinal metaplasia (IM) appeared as type E in 18 cases (58.1%), type D in 8 cases (25.8 %) and type C in 5 cases (16.1%). Fourteen out of 18 patients (77.8 %) with complete type (type Ⅰ) of IM appeared as type E of pit patterns, whereas only 4 of 13 (30.8 %) patients with incomplete type (types Ⅱ and Ⅲ) of IM appeared as type E (P<0.05). Collecting venules in the anterior of lower part of gastric corpus were subgrouped into types R (regular), I (irregular) and D (disappeared).H pyloriinfection was found in 12.2 %(9/74),60 %(9/15) and 84.3 %(43/51) cases in these types respectively. H pyloriinfection rate in type R was significantly lower than that in other two types (P<0.01).CONCLUSION: Magnifying endoscopy may have an obvious value in diagnosing chronic atrophic gastritis, intestinal metaplasia and H pylori infection.

关键词：胃粘膜内窥镜检查 HP感染临床意义病理特点

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“两难”与“双名”

山西大学学报(哲学社会科学版) 2006年第3期29卷 130-133页

作者：林利藩华南师范大学学报编辑部

当前,学术期刊界特别是学报界在生存与发展、改革与创新上,面临重重矛盾。作者针对此集中讨论了两个话题,即“两难”症———“稿患”与“稿荒”,和“双名”热———“名刊”与“名栏”热,认为对“两难”症,我们不能消极回避,而只能积... 详细信息

当前,学术期刊界特别是学报界在生存与发展、改革与创新上,面临重重矛盾。作者针对此集中讨论了两个话题,即“两难”症———“稿患”与“稿荒”,和“双名”热———“名刊”与“名栏”热,认为对“两难”症,我们不能消极回避,而只能积极适应,“对症下药”;对“双名”热,我们也不应盲目追逐,而应理性对待,因“刊”制宜。只有这样,才能求得学报的可持续发展。

关键词：学报稿患稿荒名刊名栏