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Development of MoS_(2)-stainless steel catalyst by 3D printing for efficient destruction of organics via peroxymonosulfate activation

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Journal of Environmental Sciences 2024年第1期135卷 108-117页

作者： yufeng liu Jianhui Xu Xin Fu Pengxu Wang Dan Li Yunfei Zhang Shenggui Chen Chunhui Zhang Peng liu School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of Art and Design Guangzhou Panyu PolytechnicGuangzhou 511483China Dongguan Institute of Science and Technology Innovation Dongguan University of TechnologyDongguan 523808China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Herein,a novel MoS_(2)-stainless steel composite material was first synthetized via a 3D printing method(3DP MoS_(2)-SS)for peroxymonosulfate(PMS)activation and organics *** with MoS_(2)-SS powder/PMS system(0.37 g/(m^(2)/min)),4.3-fold higher k_(FLO)/S_(BET)value was obtained in 3DP MoS_(2)-SS/PMS system(1.60 g/(m^(2)/min),resulting from the superior utilization of active *** observed that 3DP MoS_(2)-SS significantly outperformed the 3DP SS due to the enhanced electron transfer rate and increased active ***,Mo^(4+)facilitated the Fe^(2+)/Fe^(3+)cycle,resulting in the rapid degradation of florfenicol(FLO).Quenching experiments and electron paramagnetic resonance spectra indicated that·OH,SO_(4)·^(-),O_(2)·^(-)and^(1)O_(2)were involved in the degradation of *** effect of influencing factors on the degradation of FLO were evaluated,and the optimized degradation efficiency of 98.69%was achieved at 1 mM PMS and pH of *** degradation products were detected by UPLC/MS analyses and several possible degradation pathways were proposed to be the cleavage of C-N bonds,dechlorination,hydrolysis,defluorination and *** addition,3DP MoS_(2)-SS/PMS system also demonstrated superior degradation performance for 2-chlorophenol,acetaminophen,ibuprofen and *** study provided deep insights into the MoS_(2)-SS catalyst prepared by 3DP technology for PMS activation and FLO-polluted water treatment.

关键词： 3D printing Stainless steel MoS_(2) Peroxymonosulfate activation Degradation mechanism

Structure characterization of the oxide film on FGH96 superalloy powders with various oxidation degrees

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International Journal of Minerals,Metallurgy and Materials 2024年第9期31卷 2037-2047页

作者： Yang liu yufeng liu Sha Zhang Lin Zhang Peng Zhang Shaorong Zhang Na liu Zhou Li Xuanhui Qu Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China Science and Technology on Advanced High Temperature Structural Materials Laboratory AECC Beijing Institute of Aeronautical MaterialsBeijing 100095China

The structure of the oxide film on FGH96 alloy powders significantly influences the mechanical properties of *** this study,FGH96 alloy powders with various oxygen contents were investigated using high-resolution transmission electron microscopy and atomic probe technology to elucidate the structure evolution of the oxide *** dispersive spectrometer analysis revealed the presence of two distinct components in the oxide film of the alloy powders:amorphous oxide layer covering the γ matrix and amorphous oxide particles above the *** alloying elements within the oxide layer showed a laminated distribution,with Ni,Co,Cr,and Al/Ti,which was attributed to the decreasing oxygen equilibrium pressure as oxygen diffused from the surface into the γ *** the other hand,Ti enrichment was observed in the oxide particles caused by the oxidation and decomposition of the carbide *** analysis of the oxide film with oxygen contents of 140,280,and 340 ppm showed similar element distributions,while the thickness of the oxide film varies approximately at 9,14,and 30 nm,*** findings provide valuable insights into the structural analysis of the oxide film on FGH96 alloy powders.

关键词： Ni-based superalloys surface structure oxide layer thickness oxidation behavior element distribution

Fracture behavior and mechanism of highly fragmented steel cylindrical shell under explosive loading

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Defence Technology（防务技术） 2024年第6期36卷 122-132页

作者： Kang Wang Peng Chen Xingyun Sun yufeng liu Jiayu Meng Xiaoyuan Li Xiongwei Zheng Chuan Xiao Xi'an Modern Chemistry Research Institute Xi'an 710065China Shanxi Jiangyang Chemical Company Limited Taiyuan 030051China Central Iron&Steel Research Institute Company Limited Beijing 100081China China Research and Development Academy of Machinery Equipment Beijing 100089China

An in-depth understanding of the fracture behavior and mechanism of metallic shells under internal explosive loading can help develop material designs for warheads and regulate the quantity and mass distribution of the fragments *** study investigated the fragmentation performance of a new high-carbon silicon-manganese(HCSiMn)steel cylindrical shell through fragment recovery *** with the conventional 45Cr steel shell,the number of small mass fragments produced by the HCSi Mn steel shell was significantly increased with a scale parameter of 0.57 g fitted by the Weibull distribution *** fragmentation process of the HCSi Mn shell exhibited more brittle tensile fracture characteristics,with the microcrack damage zone on the outer surface being the direct cause of its high *** the one hand,the doping of alloy elements resulted in grain refinement by forming metallographic structure of tempered sorbite,so that microscopic intergranular fracture reduces the characteristic mass of the fragments;on the other hand,the distribution of alloy carbides can exert a"pinning"effect on the substrate grains,causing more initial cracks to form and propagate along the brittle carbides,further improving the shell *** the killing power radius for light armored vehicles was slightly reduced by about 6%,the dense killing radius of HCSiMn steel projectile against personnel can be significantly increased by about 26%based on theoretical *** results provided an experimental basis for high fragmentation warhead design,and to some extent,revealed the correlation mechanism between metallographic structure and shell fragmentation.

关键词： Projectile fragmentation Fragment mass distribution Fracture mode Metallographic structure Damage power

A H_(4)SiW_(12)O_(40)-catalyzed three-component tandem reaction for the synthesis of 3,3-disubstituted isoindolinones

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Chinese Chemical Letters 2024年第1期35卷 233-236页

作者： yufeng liu Guodong Zeng Yutao Cheng Lei Chen Yunhai liu Yongge Wei Guoping Yang School of Chemistry Biology and Material ScienceJiangxi Province Key Laboratory of Synthetic ChemistryJiangxi Key Laboratory for Mass Spectrometry and InstrumentationEast China University of TechnologyNanchang 330013China Key Lab of Organic Optoelectronics&Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

A H_(4)SiW_(12)O_(40)-catalyzed three-component tandem reaction of 2-acylbenzoic acids,primary amines and phosphine oxides to form 3,3-disubstituted isoindolinones was *** employing A H_(4)SiW_(12)O_(40)as the catalyst and dimethyl carbonate(DMC)as the solvent,a diverse range of 2-acylbenzoic acid derivatives and primary amines worked well to give the C3-phosphinoyl-functionalized 3,3-disubstituted isoindolinones with the yield range of 61%-87%.Advantages of this transformation include green catalyst and solvent,available starting materials,broad substrate scope,high efficiency and operational simplicity with water as the sole *** strategy achieved an efficient and green molecular fragment assembly to access isoindolinones,which would provide opportunities for the synthesis of potential biologically active molecules in a green manner.

关键词： Polyoxometalates Dehydrative coupling Three-component tandem reaction 3,3-Disubstituted isoindolinones Organic carbonate

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新见民国报刊载红楼戏考论

红楼梦学刊 2024年第1期 273-286页

作者：刘于锋山西师范大学戏剧与影视学院 030032

红楼戏是《红楼梦》改编和传播的重要途径,从文本传播和舞台传播方面扩大了《红楼梦》的影响。新见民国报刊载红楼戏六种:《申报》载顾乾元《新十八扯》之晴雯被逐情节,《双林周刊》载陈文康《晴雯补裘》,《时事新报》载“明”《时髦的... 详细信息

红楼戏是《红楼梦》改编和传播的重要途径,从文本传播和舞台传播方面扩大了《红楼梦》的影响。新见民国报刊载红楼戏六种:《申报》载顾乾元《新十八扯》之晴雯被逐情节,《双林周刊》载陈文康《晴雯补裘》,《时事新报》载“明”《时髦的宝玉夫人》,《晶报》载郭小枫《尤二姐》,《都会》与《大观园·都会》载郭小枫《红楼梦传奇》,《大观园》载“贾雨村”《园聚:红楼梦篇外》。新剧目的发现,具有文献价值和认识价值,有利于丰富红楼戏剧目和全面认识红楼戏的文体特色与审美特征。

关键词：民国报刊红楼戏剧目传播

儿童淋巴造血系统肿瘤化疗后继发性肾上腺皮质功能不全致顽固性低钠血症4例

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中华实用儿科临床杂志 2024年第8期39卷 605-608页

作者：刘莹李白魏会霞刘玉峰郑州大学第一附属医院儿童医院血液肿瘤科郑州

目的探讨淋巴造血系统肿瘤化疗后继发性肾上腺皮质功能不全(SACI)所致顽固性低钠血症患儿的临床特点、治疗及预后。方法回顾性病例总结。收集2020年1月至2023年6月郑州大学第一附属医院收治的3例急性淋巴细胞白血病(ALL)和1例淋巴母细... 详细信息

目的探讨淋巴造血系统肿瘤化疗后继发性肾上腺皮质功能不全(SACI)所致顽固性低钠血症患儿的临床特点、治疗及预后。方法回顾性病例总结。收集2020年1月至2023年6月郑州大学第一附属医院收治的3例急性淋巴细胞白血病(ALL)和1例淋巴母细胞淋巴瘤(LBL)发生SACI致顽固性低钠血症患儿的年龄、性别、血清钠水平、出现低钠血症的时间、低钠血症持续时间、皮质醇水平、24 h尿钠水平、血尿渗透压、治疗及转归等资料, 并进行总结。结果 4例患儿均为男童, 化疗方案均包含地塞米松;临床首要表现为乏力, 中度低钠血症3例, 轻度低钠血症1例;低钠血症在激素治疗1周后出现, 持续时间10～20 d, 平均14.25 d;24 h尿钠增高, 血浆渗透压轻度降低或处于正常值低限, 尿渗透压大于血浆渗透压;1例LBL早8点血皮质醇降低, 1例ALL早8点血皮质醇升高、2例ALL正常, 用氢化可的松[10 mg/(m2·d), 分2次口服]治疗后, 低钠血症得以迅速纠正, 纠正时间为3～5 d。结论儿童淋巴造血系统肿瘤在接受激素治疗过程中, 可能出现SACI, 其所致低钠血症一般出现在激素治疗1周后, 持续时间长, 实验室检查与抗利尿激素分泌异常综合征类似, 但对静脉/口服补充浓钠、限水治疗反应欠佳, 加用氢化可的松治疗可迅速纠正, 预后良好。

关键词：儿童继发性肾上腺皮质功能不全顽固性低钠血症淋巴造血系统肿瘤

“考古视野下东北亚地区古代文明的交流与互鉴”国际学术研讨会纪要

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北方文物 2024年第2期 107-112页

作者：刘宇枫常凯吉林大学考古学院吉林大学边疆考古研究中心

2023年10月14—15日,由吉林大学边疆考古研究中心主办、吉林省文物考古研究所协办的“考古视野下东北亚地区古代文明的交流与互鉴”国际学术研讨会在吉林省长春市召开。开幕式由吉林大学边疆考古研究中心主任王立新主持,吉林大学边疆考... 详细信息

2023年10月14—15日,由吉林大学边疆考古研究中心主办、吉林省文物考古研究所协办的“考古视野下东北亚地区古代文明的交流与互鉴”国际学术研讨会在吉林省长春市召开。开幕式由吉林大学边疆考古研究中心主任王立新主持,吉林大学边疆考古研究中心学术委员会主任朱泓、中央民族大学边疆考古研究院院长魏坚、吉林省文物考古研究所党支部书记吴辉分别致辞。

关键词：边疆考古研究古代文明党支部书记吉林大学王立新中央民族大学东北亚地区国际学术研讨会

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人隐孢子虫感染流行及分子检测研究进展

中国血吸虫病防治杂志 2024年第1期36卷 105-110页

作者：刘雨枫刘华李科荣刘榆华大理大学公共卫生学院云南大理671000 云南省大理州血吸虫病防治研究所云南大理671000 中国疾病预防控制中心寄生虫病预防控制所

隐孢子虫是一种重要的肠道寄生虫,主要经粪-口途径传播,人摄入被隐孢子虫卵囊污染的水源和食物均有感染风险。儿童及免疫力低下者为隐孢子虫感染高危人群,感染后可以引起腹泻、呕吐、营养不良等,严重者甚至导致死亡。分子检测技术因反... 详细信息

隐孢子虫是一种重要的肠道寄生虫,主要经粪-口途径传播,人摄入被隐孢子虫卵囊污染的水源和食物均有感染风险。儿童及免疫力低下者为隐孢子虫感染高危人群,感染后可以引起腹泻、呕吐、营养不良等,严重者甚至导致死亡。分子检测技术因反应快速、灵敏度高,已广泛应用于隐孢子虫检测。本文对近年来人群隐孢子虫感染流行情况,以及隐孢子虫分子检测相关研究进展进行综述。

关键词：隐孢子虫感染状况分子检测

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手术矫正真性正负眼睑综合征1例

中华整形外科杂志 2024年第7期40卷 743-746页

作者：李欣欣刘育凤刘宁胡亮南京中医药大学附属南京医院(南京市第二医院)整形外科南京210003

真性正负眼睑综合征是一种罕见的疾病,主要临床表现为一侧上睑下垂,另一侧上睑非代偿性退缩。以往报道的病例均为获得性,而该文报道了1例非获得性真性正负眼综合征病例,患者为26岁女性,既往体健,无其他基础疾病、手术及外伤史,年幼时双... 详细信息

真性正负眼睑综合征是一种罕见的疾病,主要临床表现为一侧上睑下垂,另一侧上睑非代偿性退缩。以往报道的病例均为获得性,而该文报道了1例非获得性真性正负眼综合征病例,患者为26岁女性,既往体健,无其他基础疾病、手术及外伤史,年幼时双侧上睑即不对称:左侧上睑中度下垂,右侧上睑退缩,一直未予治疗。2022年3月患者就诊于南京中医药大学附属南京医院(南京市第二医院)整形外科,左侧行上睑提肌缩短前徙术,右侧行上睑提肌腱膜松解延长术,术后17个月复诊,双侧角膜暴露率基本对称,整体效果满意。同时,作者通过回顾文献探讨了真性及假性正负眼综合征的症状、体征、鉴别诊断,并对该例患者的发病机制进行了推断,有助于手术方式的选择。

关键词：眼睑正负眼睑综合征上睑提肌上睑下垂上睑退缩