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Self-template-oriented synthesis of lead-free perovskite Cs_(3)Bi_(2)I_(9) nanosheets for boosting photocatalysis of CO_(2) reduction over Z-scheme heterojunction Cs_(3)Bi_(2)I_(9)/CeO_(2)

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Journal of Energy Chemistry 2022年第6期31卷 348-355,I0010页

作者： You-Xiang Feng Guang-xing dong Ke Su Zhao-Lei Liu Wen Zhang Min Zhang Tong-Bu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China

Lead halide perovskite (LHP) nanocrystals have been intensely studied as photocatalysts for artificial photosynthesis in recent ***,the toxicity of lead in LHP seriously limits their potential for widespread ***,we first present the synthesis of 2D lead-free halide perovskite (Cs_(3)Bi_(2)I_(9)) nanosheets with self-template-oriented method,in which BiOI/Bi_(2)O_(2) nanosheets were used as the template and Bi ion source *** facile electrostatic self-assembly strategy,a Z-scheme heterojunction composed of Cs_(3)Bi_(2)I_(9)nanosheets and CeO_(2) nanosheets (Cs_(3)Bi_(2)I_(9)/CeO_(2)-3:1) was constructed as photocatalyst for the photo-reduction of CO_(2) coupled with the oxidation of H_(2)*** to the matching energy levels and the close interfacial contact between Cs_(3)Bi_(2)I_(9)and CeO_(2) nanosheets,the separation efficiency of the photogenerated carriers in Cs_(3)Bi_(2)I_(9)/CeO_(2)-3:1 composite was significantly ***,the environment-friendly halide perovskite heterojunction Cs_(3)Bi_(2)I_(9)/CeO_(2)-3:1presents impressive photocatalytic activity for the reduction of CO_(2)to CH_(4)and CO with an electron consumption yield of 877.04μmol g^(-1),which is over 7 and 15 times higher than those of pristine Cs_(3)Bi_(2)I_(9)and CeO_(2)nanosheets,exceeding the yield of other reported bismuth-based perovskite for photocatalytic CO_(2)reduction.

关键词： Lead-free perovskite Z-scheme heterojunction Cs_(3)Bi_(2)I_(9)nanosheets Photocatalytic CO_(2)reduction H_(2)O oxidation

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预烧、磨料、烧结工艺对低温共烧NiCuZn铁氧体结构及磁性能的影响

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磁性材料及器件 2024年第4期55卷 31-36页

作者：孙小龙杨陆刘兴许淑容王雨董鑫何超武文杰李奇西南应用磁学研究所四川绵阳621000

采用氧化物陶瓷工艺制备低温共烧NiCuZn软磁铁氧体材料,考察了预烧温度、球磨时间、烧结温度等工艺条件对材料微观结构和磁性能的影响。结果表明,随球磨时间延长、预烧温度增高,NiCuZn铁氧体材料磁导率、饱和磁通密度先增大后减小,功耗... 详细信息

采用氧化物陶瓷工艺制备低温共烧NiCuZn软磁铁氧体材料,考察了预烧温度、球磨时间、烧结温度等工艺条件对材料微观结构和磁性能的影响。结果表明,随球磨时间延长、预烧温度增高,NiCuZn铁氧体材料磁导率、饱和磁通密度先增大后减小,功耗则先减小后增大;随烧结温度升高,材料磁导率、饱和磁通密度不断增大,功耗先降低后增高。当预烧温度为860℃、球磨时间6 h、烧结温度为900℃时,晶粒尺寸在1~2μm之间、大小均匀、结构致密,材料磁导率为465、饱和磁通密度为306 mT、功耗为46.5 kW/m^(3),综合磁性能最佳。

关键词： NiCuZn铁氧体低温共烧工艺条件磁性能

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内蒙古自治区蜱种类及分布研究概况

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寄生虫与医学昆虫学报 2024年第1期31卷 33-41页

作者：乌尼尔白翠兰翟景波吴东兴内蒙古民族大学内蒙古通辽028000 人兽共患病防控自治区高等学校重点实验室内蒙古通辽028000 内蒙古自治区布鲁氏菌病防治工程技术研究中心内蒙古通辽028000 国家药监局中药(蒙药)质量控制重点实验室内蒙古通辽028000

总结内蒙古自治区各盟市区域蜱种类及分布情况,为蜱及蜱传疾病的防控提供科学依据。通过文献查阅及收集报道资料对内蒙古地区蜱种类及分布区域进行综述性概括。内蒙古地区9市3盟已知蜱类2科5亚科8属31种。蜱是哺乳类、鸟类、爬行类和两... 详细信息

总结内蒙古自治区各盟市区域蜱种类及分布情况,为蜱及蜱传疾病的防控提供科学依据。通过文献查阅及收集报道资料对内蒙古地区蜱种类及分布区域进行综述性概括。内蒙古地区9市3盟已知蜱类2科5亚科8属31种。蜱是哺乳类、鸟类、爬行类和两栖类的体表寄生虫,也是多种人畜共患疾病病原体的传播媒介和贮存宿主。内蒙古地形地貌复杂多样且物种资源丰富,形成了多种蜱类生息之地。蜱类的分布与地理环境、植被分布紧密相关。本文通过检索文献资料,总结了中国内蒙古自治区蜱类在不同区域的分布特点情况,以期促进蜱传自然疫源性疾病研究的快速发展,提高蜱传人畜共患病的防范意识。

关键词：蜱蜱传疾病人兽共患病

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嗅觉训练和神经生长因子对感觉神经性嗅觉障碍患者的疗效分析

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中国中西医结合耳鼻咽喉科杂志 2024年第2期32卷 105-109页

作者：邢栋肇越张浩辛泽恩魏宏权中国医科大学附属第一医院耳鼻咽喉科辽宁沈阳110001

目的观察嗅觉训练联合神经生长因子治疗感觉神经性嗅觉障碍的疗效。方法选取近期接诊的头部外伤或上呼吸道感染所致嗅觉障碍患者30例作为观察组,经鼻给予神经生长因子治疗,同时指导患者进行嗅觉训练。另取我科既往接诊的头部外伤或上... 详细信息

目的观察嗅觉训练联合神经生长因子治疗感觉神经性嗅觉障碍的疗效。方法选取近期接诊的头部外伤或上呼吸道感染所致嗅觉障碍患者30例作为观察组,经鼻给予神经生长因子治疗,同时指导患者进行嗅觉训练。另取我科既往接诊的头部外伤或上呼吸道感染所致嗅觉障碍并已行嗅觉训练治疗患者30例作为对照组。两组患者分别于治疗前、治疗后1个月、治疗后3个月行Sniffin Sticks嗅棒检测评分,比较两组治疗有效率差异。结果观察组的总有效率为66.67%,对照组为33.33%,组间差异具有显著性统计学意义(P0.05),观察组治疗1个月后嗅觉测试评分与治疗前无明显差异(P>0.05),但于治疗3个月后,其评分结果与治疗前有显著性差异(P<0.05)。结论嗅觉训练联合神经生长因子治疗上呼吸道感染及外伤后嗅觉障碍的疗效优于单纯嗅觉训练,该疗法可以作为感觉神经性嗅觉障碍的治疗方法应用于临床。

关键词：嗅觉障碍嗅觉训练神经生长因子联合疗法疗效

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转速时变性对铝合金铣削加工影响分析

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机械研究与应用 2024年第3期37卷 8-11页

作者：何东星赵金月张振杰钟晨帆辽宁科技大学机械工程与自动化学院辽宁鞍山114051 辽宁科技大学创新创业学院辽宁鞍山114051

铝合金零件通常采用铣削加工,铣削参数对产品质量存在重要影响,为分析刀具时变性对铝合金铣削加工的影响,建立了刀具转速时变性模型,并采用MATLAB编程构建了时变刀具转速,然后将所构建的时变转速引入三维铝合金铣削有限元模型中,得到了... 详细信息

铝合金零件通常采用铣削加工,铣削参数对产品质量存在重要影响,为分析刀具时变性对铝合金铣削加工的影响,建立了刀具转速时变性模型,并采用MATLAB编程构建了时变刀具转速,然后将所构建的时变转速引入三维铝合金铣削有限元模型中,得到了考虑刀具时变性的铝合金铣削三维模型,分析了刀具转速时变性对铝合金铣削的影响。结果发现:刀具转速时变性会导致刀具所受阻力矩和工件产生的最大铣削应力产生较大的动态变化,因此在实际加工过程中应当尽量保证刀具转速的稳定性。

关键词：铝合金铣削转速时变性有限元

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Effect of BaSO_(4) on phase composition and sintering process of iron ore fines

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Journal of Iron and Steel Research(International) 2022年第3期29卷 408-417页

作者： Jian-tao Ju Chen-mei Tang Guang-heng Ji Xiang-dong xing Gui-qing Zhao Xin-tai Jiang Feng-lin Lu School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina Research Center of Metallurgical Engineering and Technology of Shaanxi Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina JISCO Iron and Steel Research Institute Jiayuguan735100ShaanxiChina

Iron ore containing BaSO_(4) may have a series of effects on the quality of the sinter and performance of the blast ***,the effect mechanism of BaSO_(4)(0-6.0 mass%)on the compressive strength,mineral composition,and microstructure of the sinter was *** experimental results show that the compressive strength of the sintered samples initially increases and then decreases when the BaSO_(4) content increases from 0 to 6.0 mass%,reaching a peak value of 12.78 kN with a BaSO_(4) content of 1.0 mass%.Thermal analysis indicates that BaSO_(4) initially decomposes to produce BaO at 1468 K in the presence of iron *** combines with Fe_(2)O_(3) forming barium ferrite(Ba_(2)Fe_(6)O_(11)),which exists in the sintered sample with a granular *** also dissolves in calcium ferrite and slag to promote the formation of calcium ferrite and barium glass,*** content of needle-like calcium ferrite gradually increases and then decreases with the increase in BaSO_(4) *** exists in a plate-like *** generation of dicalcium ferrite is promoted by increasing the BaSO_(4) addition from 2.0 to 6.0 mass%.

关键词： Sinter Barium sulfate Hematite Barium ferrite Mineral structure

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NH_(4)PF_(6) assisted buried interface defect passivation for planar perovskite solar cells with efficiency exceeding 21%

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Rare Metals 2023年第10期42卷 3399-3409页

作者： xing-dong Ding Xiao-Wen Zhou Jin-Wei Meng Hao-Xin Wang Tai Wu Yong Hua Cheng Chen Ming Cheng Institute for Energy Research School of Energy and Power EngineeringJiangsu UniversityZhenjiang212013China Yunnan Key Laboratory for Micro/Nano Materials&Technology School of Materials and EnergyYunnan UniversityKunming650091China

The buried interface defects severely affect the further enhancements of efficiency and stability of SnO_(2)-based planar perovskite solar cells(PSCs).To well tackle this problem,we propose a passivation strategy employing NH_(4)PF_6 to modify the buried interface of perovskite layer((FAPbI_(3))_(0.85)(MAPbBr_(3))_(0.15) composition) in planar *** introducing NH_(4)PF_(6),the oxygen defects on the surface of SnO_(2) film are greatly restricted due to the coordinate interaction between fluorine atoms(F) in PF_(6)^(-)and undercoordinated Sn^(4+).Meanwhile,the hydrogen bonding interaction(N-H…I) between NH_(4)PF_(6) and PbI_(2) can passivate the non-radiative charge recombination sites,significantly optimizing the quality of perovskite film,as well as the charge transfer process at the SnO_(2)/perovskite *** a result,the NH_(4)PF_(6)-modified PSC obtains a champion power conversion efficiency(PCE) of 21.11%superior to the reference device(18.46%),and the device with an active area of 1 cm^(2) achieves a PCE as high as17.38%.Furthermore,the unencapsulated NH_(4)PF_(6)-modified PSCs show good humidity stability and retain about80% of the initial PCE after 1080 h aging at the relative humidity(RH) of 35% ± 5%.

关键词： Defect passivation Interface engineering Surface charge transfer Stability Perovskite solar cells(PSCs)

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农林高校机械类专业英语教学改革与实践

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林业机械与木工设备 2024年第6期52卷 104-107页

作者：李学艺王伟贾娜李兴东夏鹏东北林业大学黑龙江哈尔滨150040

机械类专业英语课程在农林高校工科专业课程体系中是一门非常重要的课程。在“十四五”规划和2035年远景目标的指引下对农林高校机械类专业英语教学现状与特点进行总结与讨论。同时,针对农林高校机械类专业英语教学工作提出教学改革措... 详细信息

机械类专业英语课程在农林高校工科专业课程体系中是一门非常重要的课程。在“十四五”规划和2035年远景目标的指引下对农林高校机械类专业英语教学现状与特点进行总结与讨论。同时,针对农林高校机械类专业英语教学工作提出教学改革措施与教材改革方法,重点在于明确农林高校机械类英语教学目标,丰富教学内容,并完善考核方式。提出的教学改革与实践方法对于农林高校机械类专业英语教学水平起到启发作用,同时采用的教学改革研究方法可作为其他行业高校课程教学改革的参考。

关键词：农林高校教学改革机械类专业英语高等教育

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A hybrid WUDT-NAFnet for simultaneous source data deblending

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Petroleum Science 2024年第3期21卷 1649-1659页

作者： Chao-Fan Ke Shao-Huan Zu Jun-xing Cao Xu-dong Jiang Chao Li xing-Ye Liu Key Laboratory of Earth Exploration and Information Technology of Ministry of Education Chengdu University of Technology State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology College of Geophysics Chengdu University of Technology

Simultaneous source technology,which reduces seismic survey time and improves the quality of seismic data by firing more than one source with a narrow time interval,is compromised by the massive blended ***,deblending algorithms have been developed to separate this ***,deep learning(DL)has been proved its great potential in suppressing the *** most popular DL method employs neural network as a filter to attenuate the blended noise in an iterative estimation and subtraction framework(IESF).However,there are still amplitude distortion and blended noise residual problems,especially when dealing with weak signal submerged in strong *** address these problems,we propose a hybrid WUDT-NAFnet,which contains two *** first network is a wavelet based U-shape deblending transformer network(WUDTnet),incorporated into IESF as a robust regularization term to iteratively separate the blended *** second network is a nonlinear activate free network(NAFnet)designed to recover the event amplitude and further suppress the weak noise residual in *** the hybrid network,the blended noise can be separated purposefully and *** using synthetic and field seismic data demonstrate that the WUDTNAFnet outperforms traditional curvelet transform(CT)based method and the deblending transformer(DT)model in terms of ***,for field applications,the data augmentation method of bicubic interpolation is applied to mitigate the feature difference between synthetic and field ***,the trained network exhibits strong signal preservation ability in numerical field example without requiring additional training.

关键词： Simultaneous-source Deblending Deep learning Transformer

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Research on the Dynamic Compressibility of Polyurethane Microcellular Elastomer and its Application for Impact Resistance

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Chinese Journal of Polymer Science 2024年第8期42卷 1185-1197页

作者： Zhi-Ying Zhao Hao Jiang Xiao-dong Li Xu-dong Zhang xing Su Mei-Shuai Zou School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China

The packaging materials with cushioning performance are used to prevent the internal contents from being damaged by the impact and vibration of external *** polyurethane microcellular elastomers(PUMEs)can absorb energy through cell collapse and molecular chain *** this study,PUMEs with different densities were investigated by scanning electron microscopy,dynamic mechanical analysis and dynamic compression *** exhibited significant im pact resistance and the maximum peak stress attenuation ratio reached 73.33%.The protective equipment was made by PUME with the optimal density of 600 kg/m^(3),and then the acceleration sensing device installed with the same protective equipment fell from a height of 3,5 and 10 m to evaluate the energy-absorbing property and reusability of *** results showed that PUMEs equipment reduced the peak acceleration of the device by 93.84%,with a maximum deviation of 9%between actual test and simulation,and shortened the impact time of first landing by 57.39%.In addition,the equipment PUMEs equipment could effectively reduce the stress on the protected items.

关键词： Polyurethane microcellular elastomer Impact velocity Stress attenuation ratio Impact resistance

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