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Highly mass activity electrocatalysts with ultralow Pt loading on carbon black for hydrogen evolution reaction

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 182-190页

作者： Shaorou Ke yajing Zhao Xin Min Yanghong Li Ruiyu Mi Yangai Liu Xiaowen Wu Minghao Fang Zhaohui Huang Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastersNational Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences(Beijing)Beijing 100083China

Pt-based nanocatalysts offer excellent prospects for various ***,the low loading of Pt with excellent performance for efficient and stable nanocatalysts still presents a considerable *** this study,nanocatalysts with ultralow Pt content,excellent performance,and carbon black as support were prepared through in-situ ***~2-nm particles uniformly and stably dispersed on carbon black because of the strong s-p-d orbital hybridizations between carbon black and Pt,which suppressed the agglomeration of Pt *** unique structure is beneficial for the hydrogen evolution *** catalysts exhibited remarkable catalytic activity for hydrogen evolution reaction,exhibiting a potential of 100 mV at 100 mA·cm^(-2),which is comparable to those of commercial Pt/C *** activity(1.61 A/mg)was four times that of a commercial Pt/C catalyst(0.37 A/mg).The ultralow Pt loading(6.84wt%)paves the way for the development of next-generation electrocatalysts.

关键词： hydrogen evolution reaction ultralow platinum in-situ synthesis ultrasound

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面向可靠性设计优化的响应面偏差修正方法

中国机械工程 2016年第7期27卷 853-858页

作者：詹振飞杨俊祺舒雅静杨仁杰重庆大学机械传动国家重点实验室重庆400044 美国福特汽车研究院被动安全部门密西根州美国48124

在基于仿真的汽车设计中,针对响应面模型普遍存在的精度不高的问题,研究了基于贝叶斯推断的模型外推预测方法,提出了模型不确定性下基于偏差修正的模型外推及可靠性设计优化方法,并通过一个汽车轻量化设计实例验证了所提方法的有效性。

关键词：响应面偏差修正可靠性设计优化模型外推

高职与应用型本科“3+2”分段人才培养质量监控机制研究

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黑河学院学报 2017年第2期8卷 108-109,164页

作者：舒雅静杨宝丽广东白云学院广东广州510450

高职与应用型本科"3+2"分段培养是构建现代职业教育体系的主要举措之一,其人才培养质量不仅影响着分段培养的可持续发展,还影响着现代职业教育的发展。影响人才培养质量的关键要素对"3+2"分段人才培养质量监控机制的构建极为关键。从组... 详细信息

高职与应用型本科"3+2"分段培养是构建现代职业教育体系的主要举措之一,其人才培养质量不仅影响着分段培养的可持续发展,还影响着现代职业教育的发展。影响人才培养质量的关键要素对"3+2"分段人才培养质量监控机制的构建极为关键。从组织、制度建设、环节监督等方面,考虑监控体系的内容。

关键词： “3+2”分段培养应用型人才质量监控职业教育

2014年中国40岁及以上人群慢性阻塞性肺疾病知识知晓率及其影响因素

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中华流行病学杂志 2018年第5期39卷 586-592页

作者：樊静王宁方利文冯雅靖丛舒包鹤龄王临虹王宝华中国疾病预防控制中心慢性非传染性疾病预防控制中心呼吸病防控室北京100050

目的了解中国≥40岁人群的COPD知识知晓情况及其影响因素。方法对象来源于2014－2015年中国居民COPD监测。该监测采用多阶段分层整群随机抽样的方法在中国31个省（自治区、直辖市）的125个监测点抽取≥40岁常住居民进行面对面问卷调... 详细信息

目的了解中国≥40岁人群的COPD知识知晓情况及其影响因素。方法对象来源于2014－2015年中国居民COPD监测。该监测采用多阶段分层整群随机抽样的方法在中国31个省（自治区、直辖市）的125个监测点抽取≥40岁常住居民进行面对面问卷调查，对75 082名调查对象的人口学特征及其COPD知识知晓情况进行频数和百分比的描述，采用复杂抽样加权估计≥40岁人群COPD知识知晓水平及其95% CI，并对其影响因素进行分析。结果我国≥40岁人群的COPD疾病名称知晓率为9.2%。肺功能检查知晓率是3.6%，COPD相关知识知晓率是5.8%。上述3个知晓率均与性别、年龄、文化程度和职业有关，男性低于女性、60-岁组知晓率最高、大专、本科或研究生及以上者知晓率较高。此外，肺功能检查的知晓和COPD相关知识的知晓还与地区有关，东部地区的肺功能检查知晓高于中部，东部和西部地区的COPD相关知识知晓均高于中部。在COPD的症状中，气短或呼吸困难的知晓率最高（67.9%）。在COPD的危险因素中，吸烟的知晓率最高（81.3%）。COPD疾病名称的知晓途径比例最高的是电视（38.2%）。结论 2014年我国≥40岁人群的COPD知识知晓率较低。应积极采取措施加大对大众的COPD宣传教育力度，从而加强对COPD疾病的防控。

关键词：慢性阻塞性肺疾病肺功能检查健康教育知晓

中国居民慢性阻塞性肺疾病监测内容与方法概述

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中华流行病学杂志 2018年第5期39卷 546-550页

作者：方利文包鹤龄王宝华冯雅靖丛舒王宁樊静王临虹中国疾病预防控制中心慢性非传染性疾病预防控制中心呼吸病防控室北京100050

COPD是一类严重影响我国居民健康和生活质量的慢性呼吸系统疾病。2014年中国开展COPD监测项目，旨在掌握≥40岁居民COPD患病情况以及相关影响因素的流行和变化趋势。本文将对“中国居民COPD监测项目”内容和方法进行简要介绍。

关键词：慢性阻塞性肺疾病监测抽样

Synthesis and photoluminescence kinetics of Ce^(3+)-doped CsPbI3 QDs with near-unity PLQY

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Nano Research 2021年第10期14卷 3352-3357页

作者： Bowang shu yajing Chang Jinhua Zhang Xiaopeng Cheng Dabin Yu State Key Laboratory of Pulsed Power Laser Technology National University of Defense TechnologyHefei 230037China

CsPbI_(3)perovskite quantum dots(QDs)have great potential in optoelectronic devices due to their suitable band-gaps,but low photoluminescence quantum yields(PLQYs)and poor phase stability seriously impede their practical *** paper reports the synthesis of Ce^(3+)-doped CsPbI_(3)QDs by a hot injection *** the presence of the dopant(Ce^(3+)),the highest PLQY of CsPbI_(3)QDs reached 99%,i.e.,near-unity PLQY,and the photoluminescence(PL)emission of CsPbI_(3)QDs could be well maintained compared to that of the undoped *** photoluminescence kinetics of Ce^(3+)-doped CsPbI_(3)QDs was investigated by the ultrafast transient absorption technologies,which exhibited that the Ce^(3+)not only increased the density of excitonic states close to the high energy excitonic states(HES),but also provided more emissive ***,the radiative recombination rates calculated by the combination of PL lifetime and PLQY further illustrated the Pb2+vacancies were filled with Ce^(3+)ions so that the PL quenching of the CsPbI_(3)QDs could be effectively *** theoretic analysis uncovered the mechanism of the high PLQY and stable PL emission of the Ce^(3+)-doped CsPbI_(3)QDs.

关键词： CsPbI_(3)quantum dots Ce^(3+)-doped CsPbI_(3) near-unity photoluminescence quantum yield(PLQY) photoluminescence kinetics

武汉东湖底栖动物多样性分布的影响因素及历史变化

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湖泊科学 2025年第1期37卷 204-214页

作者：喻曾曾和雅静吴俊燕赵永晶崔永德中国科学院水生生物研究所武汉430072 中国科学院大学现代农业科学学院北京100049

探究城市湖泊物种和功能多样性分布及其历史变化有助于了解人类干扰对生态系统的影响。本研究于20202021年对武汉东湖不同湖区的底栖动物进行3次季节性调查,并搜集了19702020年文献中的历史数据,就底栖动物物种、功能和系统发育多样性... 详细信息

探究城市湖泊物种和功能多样性分布及其历史变化有助于了解人类干扰对生态系统的影响。本研究于20202021年对武汉东湖不同湖区的底栖动物进行3次季节性调查,并搜集了19702020年文献中的历史数据,就底栖动物物种、功能和系统发育多样性的空间分布和历史变化进行了比较,通过获取2000、2010及2020年东湖湖滨带1 km缓冲区的不同土地利用方式占比变化,分析了底栖动物多样性与环境因子之间的相关性。结果表明:调查共记录底栖动物97属种,团湖总种类数最高,后湖功能丰富度最高,功能均匀度在庙湖最高,在菱角湖最低,系统发育的分类多样性指数在团湖最高,分类差异指数在庙湖最高。总物种数与总氮、总磷呈负相关,耐污种种类数与总磷呈负相关,功能均匀度与耕地占比呈正相关,功能丰富度与总氮、总磷呈负相关,分类多样性指数与总氮、总磷呈负相关。结合历史数据,1970s 2020s水生昆虫占比呈现先下降后上升的趋势,到2010s底栖动物有个体小型化的趋势,后有所恢复。

关键词：底栖动物功能多样性土地利用历史变化东湖

Implication and challenges of direct-fed microbial supplementation to improve ruminant production and health

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Journal of Animal Science and Biotechnology 2022年第2期13卷 316-337页

作者： yajing Ban Le Luo Guan Department of Agricultural Food and Nutritional ScienceUniversity of AlbertaEdmontonAlberta T6G 2P5Canada

Direct-fed microbials(DFMs)are feed additives containing live naturally existing microbes that can benefit animals’health and production *** to the banned or strictly limited prophylactic and growth promoting usage of antibiotics,DFMs have been considered as one of antimicrobial alternatives in livestock *** used as DFMs for ruminants usually consist of bacteria including lactic acid producing bacteria,lactic acid utilizing bacteria and other bacterial groups,and fungi containing Saccharomyces and *** date,the available DFMs for ruminants have been largely based on their effects on improving the feed efficiency and ruminant productivity through enhancing the rumen function such as stabilizing ruminal pH,promoting ruminal fermentation and feed *** research has shown emerging evidence that the DFMs may improve performance and health in young ruminants,however,these positive outcomes were not consistent among studies and the modes of action have not been clearly *** review summarizes the DFM studies conducted in ruminants in the last decade,aiming to provide the new knowledge on DFM supplementation strategies for various ruminant production stages,and to identify what are the potential barriers and challenges for current ruminant industry to adopt the *** literature research indicates that DFMs have the potential to mitigate ruminal acidosis,improve immune response and gut health,increase productivity(growth and milk production),and reduce methane emissions or fecal shedding of *** research is needed to explore the mode of action of specific DFMs in the gut of ruminants,and the optimal supplementation strategies to promote the development and efficiency of DFM products for ruminants.

关键词： DFM-microbial interaction Direct-fed microbials Gut health Host-DFM interaction Ruminants

An Encoding-Decoding Framework Based on CNN for circ RNA-RBP Binding Sites Prediction

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Chinese Journal of Electronics 2024年第1期33卷 256-263页

作者： yajing GUO Xiujuan LEI Yi PAN School of Computer Science Shaanxi Normal University Faculty of Computer Science and Control Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences Department of Computer Science Georgia State University

Predicting RNA binding protein(RBP) binding sites on circular RNAs(circ RNAs) is a fundamental step to understand their interaction mechanism. Numerous computational methods are developed to solve this problem, but they cannot fully learn the features. Therefore, we propose circ-CNNED, a convolutional neural network(CNN)-based encoding and decoding framework. We first adopt two encoding methods to obtain two original matrices. We preprocess them using CNN before fusion. To capture the feature dependencies, we utilize temporal convolutional network(TCN) and CNN to construct encoding and decoding blocks, respectively. Then we introduce global expectation pooling to learn latent information and enhance the robustness of circ-CNNED. We perform circ-CNNED across 37 datasets to evaluate its effect. The comparison and ablation experiments demonstrate that our method is superior. In addition, motif enrichment analysis on four datasets helps us to explore the reason for performance improvement of circ-CNNED.

关键词： Proteins RNA Neural networks Encoding Robustness Decoding Convolutional neural networks

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