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Unlocking single-atom catalysts via amorphous substrates

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Nano Research 2024年第5期17卷 3533-3546页

作者： Bohua Sun mingyuan xu Xiaoxia Li Baohong Zhang Rui Hao Xiaoyu Fan Binbin Jia Dingshun She School of Engineering and Technology China University of Geosciences(Beijing)Beijing 100083China Zhengzhou Institute China University of Geosciences(Beijing)Zhengzhou 451283China College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China School of Chemistry Beihang UniversityBeijing 100191China Chinese Academy of Sciences(CAS)Key Laboratory of Nanosystem and Hierarchy Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China National Engineering Research Center of Nonferrous Metals Materials and Products for New EnergyChina GRINM Group Co.Ltd.Beijing 100088China

Single-atom catalysts(SACs)reveal great potential for application in catalysis due to their fully exposed active *** general,single atoms(SAs)and the coordination substrates need to have strong interactions or charge transfer to ensure the atomic dispersion,which requires the selection of a suitable substrate to stabilize the target *** studies have demonstrated that amorphous materials with abundant defects and coordinatively unsaturated sites can be used as substrates for more efficient capturing SAs,further enhancing the catalytic *** this review,we discuss recent research progress of SAs loaded on amorphous substrates for enhanced catalytic ***,we summarize the commonly used amorphous substrates for stabilizing ***,we present several advanced applications of amorphous SACs in the field of catalysis,including electrocatalysis and *** then,we also clarify the synergistic mechanism between SAs and amorphous substrate on catalytic ***,we summarize the challenges with our personal views and provide a critical outlook on how amorphous SACs continue to evolve.

关键词： single-atoms amorphous substrate synthetic strategy catalysis

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兵团第十二师商务高质量发展研究

兵团党校学报 2024年第3期 126-131页

作者：许明元兵团第十二师国资公司新疆乌鲁木齐830000

推动商务高质量发展是提高经济效益、促进经济持续健康发展的重要举措。近年来,第十二师商务发展取得了总体布局逐步形成、消费基础性作用得到巩固、内贸流通稳步运行、对外贸易呈现快速增长、招商引资稳步推进、园区平台作用不断彰显... 详细信息

推动商务高质量发展是提高经济效益、促进经济持续健康发展的重要举措。近年来,第十二师商务发展取得了总体布局逐步形成、消费基础性作用得到巩固、内贸流通稳步运行、对外贸易呈现快速增长、招商引资稳步推进、园区平台作用不断彰显等成绩,但也面临统筹发展与安全能力仍有待增强、招商引资质量仍有待提升、商贸流通仍有待升级、对外开放水平仍有待提高、开发区活力仍有待迸发等主要问题,需要更好统筹发展和安全、抓好产业链招商、推动商贸流通转型升级、提高对外开放水平、深化开发区改革、优化营商环境,以实现商务高质量发展。

关键词：兵团第十二师产业链招商引资高质量发展

不同龄级瑞香狼毒影响微尺度高寒草甸群落结构

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中国草地学报 2024年第2期46卷 83-91页

作者：朱文琰杨畅许明圆王娅琳徐世晓孙平河南科技大学园艺与植物保护学院河南洛阳471003 河南科技大学动物科技学院河南洛阳471003 中国科学院西北高原生物研究所青海西宁810008 青海大学省部共建三江源生态与高原农牧业国家重点实验室青海西宁810016

通过样圆法群落调查探究不同龄级狼毒对微尺度草地群落结构和土壤化学计量特征的影响,结果表明:(1)狼毒能显著降低微尺度草地的群落盖度、群落加权平均高度、植物密度和地上生物量等指标,且影响程度随着狼毒龄级的增加而增大。(2)狼毒... 详细信息

通过样圆法群落调查探究不同龄级狼毒对微尺度草地群落结构和土壤化学计量特征的影响,结果表明:(1)狼毒能显著降低微尺度草地的群落盖度、群落加权平均高度、植物密度和地上生物量等指标,且影响程度随着狼毒龄级的增加而增大。(2)狼毒显著改变了草地的群落结构,降低了禾本科和莎草科植物的优势度,增加了杂草植物的优势度,随着狼毒龄级的增加,杂草的优势度逐渐增加。(3)狼毒的生长增加了退化草地物种多样性,但当狼毒龄级达到Ⅴ龄时,草地物种多样性逐渐降低。(4)随着狼毒龄级的增加,土壤全碳含量、全氮含量和全磷含量整体呈显著下降趋势,而碳磷比和氮磷比呈显著上升趋势。总之,狼毒对微尺度高寒草甸植物群落结构和土壤化学计量特征有显著影响,且与龄级有关,建议在修复狼毒型退化草地时,应及时进行人工干预,尤其在狼毒龄级达到Ⅴ龄之前,采取围栏封育、施氮肥和补播豆科优良牧草等措施,加强退化草地的生态修复。

关键词：高寒草甸狼毒重要值物种多样性土壤化学计量特征

常用皮肤科生物制剂治疗中的矛盾性反应及机制

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中国皮肤性病学杂志 2024年第2期38卷 140-146页

作者：陈尚申徐明圆刘业强南昌大学焕奎书院江西南昌330036 上海市皮肤病医院同济大学附属皮肤病医院病理科上海200443

生物制剂已广泛应用于皮肤慢性炎症性疾病,如银屑病、特应性皮炎等疾病的临床治疗中,但是治疗过程中皮肤和其他器官会出现非感染性的新发炎症或原发部位炎症加剧等不良现象,即矛盾性反应。引起的矛盾性反应表现从矛盾性银屑病、矛盾性... 详细信息

生物制剂已广泛应用于皮肤慢性炎症性疾病,如银屑病、特应性皮炎等疾病的临床治疗中,但是治疗过程中皮肤和其他器官会出现非感染性的新发炎症或原发部位炎症加剧等不良现象,即矛盾性反应。引起的矛盾性反应表现从矛盾性银屑病、矛盾性湿疹、矛盾性化脓性汗腺炎到狼疮样反应不等,在临床上前两种矛盾性反应最为常见。本文拟对目前皮肤科常用生物制剂治疗中的矛盾性反应、潜在发生机制及应对策略进行回顾与总结,为提高临床医生对矛盾性反应的认识,为今后更合理应用生物制剂、规范处理矛盾性反应提供依据。

关键词：生物制剂矛盾性反应皮肤慢性炎症性疾病银屑病特应性皮炎

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JAK抑制剂巴瑞替尼治疗环状肉芽肿1例

中华皮肤科杂志 2024年第5期57卷 461-462页

作者：侯晓媛吴南辉徐明圆刘业强上海市皮肤病医院同济大学附属皮肤病医院病理科上海200040

患者女,63岁,因双手背发疹伴痒10年于2021年9月就诊。患者10年前无明显诱因双手背出现红色丘疹,呈环状排列,偶觉轻度瘙痒。曾于外院行皮肤组织病理检查,诊断为“环状肉芽肿”,予沙利度胺、复方甘草酸苷等口服,外用糖皮质激素及钙调磷酸... 详细信息

患者女,63岁,因双手背发疹伴痒10年于2021年9月就诊。患者10年前无明显诱因双手背出现红色丘疹,呈环状排列,偶觉轻度瘙痒。曾于外院行皮肤组织病理检查,诊断为“环状肉芽肿”,予沙利度胺、复方甘草酸苷等口服,外用糖皮质激素及钙调磷酸酶抑制剂等,疗效欠佳,皮疹无法完全消退,并反复发作。既往高血压病史20年,甲状腺功能减退病史10年,糖尿病病史1年。家族其他成员中无类似病史。

关键词：环状肉芽肿家族其他成员皮肤组织病理红色丘疹复方甘草酸苷轻度瘙痒既往高血压病甲状腺功能减退

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国内首例淋巴浆细胞性斑块

临床皮肤科杂志 2024年第6期53卷 354-357页

作者：席宁远吴南辉周质宇许小向白云梁豫琳徐明圆刘业强上海市皮肤病医院/同济大学附属皮肤病医院病理科上海200443 上海市皮肤病医院/同济大学附属皮肤病医院中心实验室上海200443

报告国内首例淋巴浆细胞性斑块。患儿男,9岁。右前臂伸侧红色斑块7年。皮肤科检查:右前臂伸侧不规则红色斑块,上覆白色鳞屑。皮损组织病理:连续性角化不全,表皮不规则增生,局部颗粒层变薄,基底层液化变性,真皮浅中层较密集的淋巴细胞、... 详细信息

报告国内首例淋巴浆细胞性斑块。患儿男,9岁。右前臂伸侧红色斑块7年。皮肤科检查:右前臂伸侧不规则红色斑块,上覆白色鳞屑。皮损组织病理:连续性角化不全,表皮不规则增生,局部颗粒层变薄,基底层液化变性,真皮浅中层较密集的淋巴细胞、浆细胞及组织细胞浸润。免疫组化:真皮层浅中层浆细胞膜CD38及CD138弥漫散在阳性。诊断:淋巴浆细胞性斑块。给予克立硼罗软膏外涂治疗,2个月后可见红斑较前变平。

关键词：淋巴浆细胞性斑块

TendiffPure:a convolutional tensor-train denoising diffusion model for purification

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Frontiers of Information Technology & Electronic Engineering 2024年第1期25卷 160-169页

作者： mingyuan BAI Derun ZHOU Qibin ZHAO RIKEN AIP Tokyo 1030027Japan School of Environment and Society Tokyo Institute of TechnologyTokyo 1528550Japan

Diffusion models are effective purification methods,where the noises or adversarial attacks are removed using generative approaches before pre-existing classifiers conducting classification ***,the efficiency of diffusion models is still a concern,and existing solutions are based on knowledge distillation which can jeopardize the generation quality because of the small number of generation ***,we propose TendiffPure as a tensorized and compressed diffusion model for *** the knowledge distillation methods,we directly compress U-Nets as backbones of diffusion models using tensor-train decomposition,which reduces the number of parameters and captures more spatial information in multi-dimensional data such as *** space complexity is reduced from O(N^(2))to O(NR^(2))with R≤4 as the tensor-train rank and N as the number of *** results show that TendiffPure can more efficiently obtain high-quality purification results and outperforms the baseline purification methods on CIFAR-10,Fashion-MNIST,and MNIST datasets for two noises and one adversarial attack.

关键词： Diffusion models Tensor decomposition Image denoising

Universal dynamic scaling and Contact dynamics in quenched quantum gases

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Frontiers of physics 2024年第2期19卷 213-220页

作者： Jia-Nan Cui Zhengqiang Zhou mingyuan Sun School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Lab of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China

Recently universal dynamic scaling is observed in several systems,which exhibit a spatiotemporal self-similar scaling behavior,analogous to the spatial scaling near phase *** latter one arises from the emergent continuous scaling *** by this,we investigate the possible relation between the scaling dynamics and the continuous scaling symmetry in this *** derive a theorem that the scaling invariance of the quenched Hamiltonian and the initial density matrix can lead to the universal dynamic *** is further demonstrated both in a two-body system analytically and in a many-body system *** the latter one,we calculate the dynamics of quantum gases quenched from the zero interaction to a finite interaction via the non-equilibrium high-temperature virial expansion.A dynamic scaling of the momentum distribution appears in certain momentum-time windows at unitarity as well as in the weak interacting ***,this universal scaling dynamics persists approximately with smaller scaling exponents even if the scaling symmetry is fairly *** findings may offer a new perspective to interpret the related *** also study the Contact dynamics in the BEC−BCS ***,the half-way time displays a maximum near unitarity while some damping oscillations occur on the BEC side due to the dimer state,which can be used to detect possible two-body bound states in experiments.

关键词： dynamic scaling Contact dynamics quantum gases cold atom quench dynamics virial expansion continuous scaling symmetry

Small tracking error correction for moving targets of intelligent electro-optical detection systems

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Frontiers of Mechanical Engineering 2024年第2期19卷 29-44页

作者： Cheng SHEN Zhijie WEN Wenliang ZHU Dapeng FAN mingyuan LING College of Intelligence Science and Technology National University of Defense TechnologyChangsha 410073China

Small tracking error correction for electro-optical systems is essential to improve the tracking precision of future mechanical and defense *** threats,such as“low,slow,and small(LSS)”moving targets,pose increasing challenges to *** core goal of this work is to address the issues,such as small tracking error correction and aiming control,of electro-optical detection systems by using mechatronics drive modeling,composite velocity–image stability control,and improved interpolation filter design.A tracking controller delay prediction method for moving targets is proposed based on the Euler transformation model of a two-axis,two-gimbal cantilever beam coaxial *** tracking error formation is analyzed in detail to reveal the scientific mechanism of composite control between the tracking controller’s feedback and the motor’s velocity–stability *** improved segmental interpolation filtering algorithm is established by combining line of sight(LOS)position correction and multivariable typical tracking fault ***,a platform with 2 degrees of freedom is used to test the *** LSS moving target shooting object with a tracking distance of S=100 m,target board area of A=1 m^(2),and target linear velocity of v=5 m/s is *** show that the optimal method’s distribution probability of the tracking error in a circle with a radius of 1 mrad is 66.7%,and that of the traditional method is 41.6%.Compared with the LOS shooting accuracy of the traditional method,the LOS shooting accuracy of the optimized method is improved by 37.6%.

关键词： electro-optical detection system small tracking error moving target visual servo aiming contro