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Synergistic effect of homojunction and Ohmic junctions in CdS boosting spatial charge separation for U(VI)photoreduction

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Nano Research 2024年第8期17卷 6849-6859页

作者： Haonan Pei zhimin dong Zifan Li Jian Huang Yuanping Jiang Zuojia Li Lin Xu Xiaohong Cao Yunhai Liu Zhibin Zhang Guoping Yang State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China

Photo-excited holes usually migrate to the surface of the catalyst and rapidly recombine with electrons,reducing the photocatalytic reduction efficiency of uranium(VI)(U(VI))in radioactive ***,we employed a straightforward synthesis technique to meticulously shape and manipulate the morphology of CdS to precisely construct CdS-Ni dandelion-like composites with different aspect ***,the introduction of crystal facet homojunction with Ohmic contacts in this unique morphology siqnificantly improves the photocatalytic ***-dependent photoluminescence spectroscopy(TD-PL)verifies that the composite material positively effects on the dissociation of *** 30 min,CdS(002)/(102)/Ni-4 removed 98% of the uranium content in solution and showed a rather high apparent rate constant(0.114 min^(−1)),which was 4.8 times higher than that of CdS nanospheres(NSs)(0.024 min^(−1))and 3.7 times higher than that of CdS nanorods(NRs)(0.031 min^(−1)).This is much higher the most reported photocatalysts for U(VI)*** after 5 consecutive cycles,the photocatalytic efficiency only decreased by 7%.This offers a fresh perspective on constructing a new perspective for building a green,efficient,and multi mechanism collaborative catalytic system to remediate environmental pollution.

关键词： uranium dandelion-shaped axial size effect crystal facet homojunction ohmic contact

Harvesting the Vibration Energy of CdS for High-Efficient Piezo-Photocatalysis Removal of U(Ⅵ):Roles of Shape Dependent and Piezoelectric Polarization

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Energy & Environmental Materials 2024年第5期7卷 387-399页

作者： zhimin dong donglin Gao Zifan Li Haonan Pei Lin Xu Jian Huang Xiaohong Cao Youqun Wang Ting Wang Qianglin Wei Zhibin Zhang Yunhai Liu State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China Institute of Geology Chinese Academy of Geological Sciences26 Baiwanzhuang RoadBeijing 100037China

Piezo-photocatalysis could coalesce the advantages of mechanical vibration and solar energy perfectly to achieve high-efficiency catalytic ***,the quintessential piezoelectric material CdS nanowires with different aspect ratios are precisely constructed and applied for piezo-photocatalytic reduction of U(Ⅵ)for the first *** ultrasonic(60 kHz,100 W)induces piezoelectric potential to generate a 0.57 eV A^(-1)electric field,which is added to the direction of CdS(010)as a driving force to efficiently separate photogenerated *** alliance between piezoelectric effect and photocatalytic activity endows CdS NW-3 with the fastest piezo-photocatalytic rate under ultrasonic vibration and 5 W LED irradiation,and the relevant rate constant(0.042 min^(-1))is about 12 and 53.8 times than that of LED and *** importantly,93.74%of U(Ⅵ)could be removed from natural uranium mine ***,this piezo-photocatalysis system that reduces U(Ⅵ)to easily separable(UO_(2))O_(2)·2H_(2)O(s)provides valuable input for disposal applications of radioactive wastewater and broadens the horizons of nuclear energy utilization toward the advancement of carbon neutrality.

关键词： (UO_(2))O_(2)·2H_(2)O CdS nanowires piezo-photocatalytic piezo-potential U(Ⅵ)

Enhanced autophagic clearance of amyloid-βvia histone deacetylase 6-mediated V-ATPase assembly and lysosomal acidification protects against Alzheimer's disease in vitro and in vivo

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Neural Regeneration Research 2025年第9期20卷 2633-2644页

作者： zhimin Long Chuanhua Ge Yueyang Zhao Yuanjie Liu Qinghua Zeng Qing Tang Zhifang dong Guiqiong He Institute of Neuroscience School of Basic Medical SciencesChongqing Medical UniversityChongqingChina Department of Anatomy Chongqing Medical UniversityChongqingChina Department of Physiology Chongqing Medical UniversityChongqingChina Pediatric Research Institute Children’s Hospital of Chongqing Medical UniversityChongqingChina Ministry of Education Key Laboratory of Child Development and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina National Clinical Research Center for Child Health and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina

Recent studies have suggested that abnormal acidification of lysosomes induces autophagic accumulation of amyloid-βin neurons,which is a key step in senile plaque ***,resto ring normal lysosomal function and rebalancing lysosomal acidification in neurons in the brain may be a new treatment strategy for Alzheimer's *** acetylation/deacetylation plays a central role in lysosomal ***,we show that inhibiting the classic microtubule deacetylase histone deacetylase 6 with an histone deacetylase 6 shRNA or thehistone deacetylase 6 inhibitor valproic acid promoted lysosomal reacidification by modulating V-ATPase assembly in Alzheimer's *** rthermore,we found that treatment with valproic acid markedly enhanced *** clearance of amyloid-βaggregates,and ameliorated cognitive deficits in a mouse model of Alzheimer's *** findings demonstrate a previously unknown neuroprotective mechanism in Alzheimer's disease,in which histone deacetylase 6 inhibition by valproic acid increases V-ATPase assembly and lysosomal acidification.

关键词： Alzheimer's disease amyloid-β APP/PS1 mice autophagy cognitive impairment histone deacetylase 6 lysosomal acidification microtubule acetylation valproic acid V-ATPase

Development of Annexin V Technology for Removal of Dead Spermatozoa from Bovine Spermatozoa and Its Application in Frozen Sexed Semen Production

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Agricultural Biotechnology 2022年第1期11卷 60-66页

作者： Jian ZHANG Qi QI Yonghou LIANG zhimin dong Gui WANG Xueyuan ZHOU Hetao College Bayannur 015000China Inner Mongolia Autonomous Region Maternal and Child Health Hospital Hohhot 010021China

[Objectives]This study was conducted to develop a molecular marker immunomagnetic bead sorting technology method that can specifically identify dead spermatozoa.[Methods]This study first confirmed the specific binding of Annexin V to dead bovine spermatozoa,and tried to remove dead spermatozoa in semen combining with the immunomagnetic bead technology,so as to improve the separation efficiency of target spermatozoa in the process of sex-controlled semen preparation on a flow cytometer.[Results]The spermatozoon motility,membrane integrity and mitochondrial activity after sorting and the rate of dead spermatozoa during the on-machine X/Y separation were all improved to different degrees(P0.05),indicating that the technical process did not cause additional damage to the spermatozoa.[Conclusions]Combining the specificity of Annexin V with the immunomagnetic bead method could effectively remove dead spermatozoa from bovine spermatozoa,and significantly reduce the rate of dead spermatozoa in bovine permatozoa during sex-controlled separation(P<0.05).The method developed can effectively improve the production efficiency of frozen sexed semen of dairy cows,reduce the production cost,and promote the industrial application of the product.

关键词： Bovine spermatozoon Annexin V Immunomagnetic beads Frozen sexed semen

基于S-MCLSTM和DANN的滚动轴承剩余寿命预测方法

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计算机应用研究 2024年第9期41卷 2787-2793页

作者：董志民董洁超濮阳职业技术学院数学与信息工程学院河南濮阳457000 河南大学濮阳工学院河南濮阳457000 中国工商银行软件开发中心北京100080

针对在不同工作条件和不同故障形式下,滚动轴承剩余寿命预测泛化能力差和精确度不高的问题,提出一种基于孪生多卷积长短时记忆网络(S-MCLSTM)和域对抗网络(DANN)的剩余寿命预测方法。首先针对不同的工作条件对退化过程的影响,提出基于S-... 详细信息

针对在不同工作条件和不同故障形式下,滚动轴承剩余寿命预测泛化能力差和精确度不高的问题,提出一种基于孪生多卷积长短时记忆网络(S-MCLSTM)和域对抗网络(DANN)的剩余寿命预测方法。首先针对不同的工作条件对退化过程的影响,提出基于S-MCLSTM的差异化特征提取器以提取一定时间间隔的两个样本之间的差异化特征。同时,进一步使用工作条件判别器与差异化特征提取器进行对抗训练,减少由于工作条件的原因产生的冗余特征。之后针对故障形式对退化过程的影响,设计了故障诊断器用于和差异化特征提取器对抗训练。最后,考虑到滚动轴承一般退化过程中,不同阶段的退化过程与特征之间的映射关系可能存在的差异,提出了阶段判别器,并在不同阶段应用不同的剩余寿命预测器进行预测。最终在西安交通大学XJTU-SY轴承数据集上的实验表明,该方法在多种工作条件和故障形式下都能较准确地预测剩余寿命,有较为广泛的应用前景。

关键词：滚动轴承剩余寿命预测孪生多卷积长短时记忆网络域对抗网络

不同原料青贮对生长期羔羊生长性能、胴体性状及肉品质的影响

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中国饲料 2021年第16期 66-69页

作者：董志岷杜金娥河套学院内蒙古巴彦淖尔015000

文章旨在评估日粮添加不同青贮原料对羔羊生长性能、胴体性状及肉品质的影响。试验将初始平均体重为(21.63±1.02)kg的24只羔羊随机分为2组,每组6个重复(2头/重复)。两组羔羊分别饲喂青贮玉米或青贮荞麦添加水平为55%的全混合日粮42 d... 详细信息

文章旨在评估日粮添加不同青贮原料对羔羊生长性能、胴体性状及肉品质的影响。试验将初始平均体重为(21.63±1.02)kg的24只羔羊随机分为2组,每组6个重复(2头/重复)。两组羔羊分别饲喂青贮玉米或青贮荞麦添加水平为55%的全混合日粮42 d。结果:青贮玉米和青贮荞麦组羔羊有机物、中性洗涤纤维和酸性洗涤纤维摄入量及末重、日增重均无显著影响(P>0.05)。青贮荞麦组干物质、粗蛋白质摄入量分别显著提高4.16%和6.87%(P0.05)。青贮荞麦组眼肌面积较青贮玉米组显著提高2.63%(P0.05),但青贮玉米组蒸煮损失较青贮荞麦组显著提高11.32%(P<0.05)。结论:日粮添加等量的青贮荞麦可以提高干物质、粗蛋白质摄入量及眼肌面积,降低肌肉的蒸煮损失,对羔羊日增重无负面影响。

关键词：青贮羔羊生长性能胴体性状肉品质

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“四史”融入“原理”课的必要性及路径探析

中国轻工教育 2022年第3期25卷 33-38页

作者：董志敏天津理工大学马克思主义学院天津300384

“四史”融入马克思主义基本原理概论课,既是完成中宣部、教育部改革创新对思政课的要求,更能实现以史明理、以史育人的良好效果,也是讲好“原理”课的必然要求。为实现更佳的融合效果,应在内容与形式两方面着力,在内容方面注重融合内... 详细信息

“四史”融入马克思主义基本原理概论课,既是完成中宣部、教育部改革创新对思政课的要求,更能实现以史明理、以史育人的良好效果,也是讲好“原理”课的必然要求。为实现更佳的融合效果,应在内容与形式两方面着力,在内容方面注重融合内容的高度契合和适宜的详略安排,在形式上注重增强对学生的吸引力、提升学生的参与感、拉近师生的距离、增进学生的亲临感,以增强学生对中国特色社会主义事业的认同,切实落实思政课立德树人的根本任务。

关键词： “四史” “原理”课大学生思政课

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巴基斯坦毒品问题

国际研究参考 2021年第3期 37-47页

作者：董志敏天津理工大学马克思主义学院

巴基斯坦是世界毒品问题最为严重的国家之一,主要体现在毒品的生产和加工、毒品的走私过境以及国内民众的吸毒问题等方面,不仅给巴基斯坦的经济、社会等方面带来诸多负面影响,而且给周边国家带来安全隐患。多年来,为改善毒品形势,巴基... 详细信息

巴基斯坦是世界毒品问题最为严重的国家之一,主要体现在毒品的生产和加工、毒品的走私过境以及国内民众的吸毒问题等方面,不仅给巴基斯坦的经济、社会等方面带来诸多负面影响,而且给周边国家带来安全隐患。多年来,为改善毒品形势,巴基斯坦政府在完善法律法规、打击毒品走私犯罪、实行替代种植等多方面着力,并注重在禁毒过程中加强国际交流与合作,取得一定成效,然而禁毒工作并无终点,始终需要巴政府拿出足够的精力去应对,实现禁毒工作的常态化,不断向"无毒"的目标迈进。

关键词：毒品问题禁毒工作毒品形势巴基斯坦政府替代种植国内民众常态化国际交流与合作

金属有机框架材料吸附重金属离子和放射性核素的研究进展

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材料导报 2023年第12期37卷 55-64页

作者：李子凡张志宾董志敏刘云海东华理工大学江西省合成化学重点实验室南昌330013 东华理工大学核资源与环境国家重点实验室南昌330013

金属有机框架(MOFs)是一类无机-有机配位的多孔材料。与传统吸附剂相比,MOFs具有结构可设计性、功能多样性、比表面积大和孔隙率高等优点,可通过前合成和后修饰法调节孔径大小、引入特定官能团或活性位点,实现快速、高效地分离水中的重... 详细信息

金属有机框架(MOFs)是一类无机-有机配位的多孔材料。与传统吸附剂相比,MOFs具有结构可设计性、功能多样性、比表面积大和孔隙率高等优点,可通过前合成和后修饰法调节孔径大小、引入特定官能团或活性位点,实现快速、高效地分离水中的重金属离子和放射性核素,对资源回收和环境修复意义重大。本文详述了MOFs吸附砷、铬和汞等重金属离子,吸附铀和锝等放射性核素的研究现状及作用机理,总结了提高MOFs吸附性能的方法,提出了MOFs作为重金属和放射性核素吸附剂时亟需解决的问题。

关键词：金属有机框架材料重金属离子放射性核素吸附