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Petrographic analysis and trace element distribution of high purity quartz from Pakistan:Implications for processing and purification techniques

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Petrographic analysis and trace element distribution of high...

A dual adaptive unscented Kalman filter algorithm for SINS-based integrated navigation system

第十届全国成矿理论与找矿方法学术讨论会

作者：伊布 XIA Mei HOU Zhenhui yang xiaoyong CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space SciencesUniversity of Science and Technology of China

1 Introduction Quartz is a highly prevalent rock forming mineral in the Earth's crust,playing a significant role in the formation of various rock types in diverse geological settings(G?tze et al.,2021).These settings encompass hydrothermal formations like quartz vein and pegmatite,sedimentary deposits such as sandstone and chert,

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Journal of Systems Engineering and Electronics 2024年第3期35卷 732-740页

作者： LYU Xu MENG Ziyang LI Chunyu CAI Zhenyu HUANG Yi LI xiaoyong YU Xingkai Department of Precision Instrument Tsinghua UniversityBeijing 100084China College of Mechanical and Power Engineering Three Gorges UniversityYichang 443002China Unit 91001 of the PLA Beijing 100161China School of Control and Computer Engineering North China Electric Power UniversityBeijing 100096China

In this study, the problem of measuring noise pollution distribution by the intertial-based integrated navigation system is effectively suppressed. Based on nonlinear inertial navigation error modeling, a nested dual Kalman filter framework structure is developed. It consists of unscented Kalman filter (UKF)master filter and Kalman filter slave filter. This method uses nonlinear UKF for integrated navigation state estimation. At the same time, the exact noise measurement covariance is estimated by the Kalman filter dependency filter. The algorithm based on dual adaptive UKF (Dual-AUKF) has high accuracy and robustness, especially in the case of measurement information interference. Finally, vehicle-mounted and ship-mounted integrated navigation tests are conducted. Compared with traditional UKF and the Sage-Husa adaptive UKF (SH-AUKF), this method has comparable filtering accuracy and better filtering stability. The effectiveness of the proposed algorithm is verified.

关键词： Kalman filter dual-adaptive integrated navigation unscented Kalman filter(UKF) robust

考虑安装误差6σ稳健设计的减速器改进齿面接触分析

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中国工程机械学报 2023年第5期21卷 438-442,448页

作者：徐作栋董月清阳小勇天津职业技术师范大学机械工程学院天津300222 湖南三一工业职业技术学院智能制造学院湖南长沙410129 洛阳有色金属加工设计研究院技术部河南洛阳471039 湖南大学机械工程与运载学院湖南长沙410008

为了提高锥齿轮发生啮合过程中安装误差控制精度,在分析影响安装精度因素基础上,根据印痕特性与6σ稳健优化的方法构建目标函数,通过Monte Carlo算法完成抽样,采用多岛遗传算法实现二阶接触参数优化并调整安装误差,对比了优化前后的安... 详细信息

为了提高锥齿轮发生啮合过程中安装误差控制精度,在分析影响安装精度因素基础上,根据印痕特性与6σ稳健优化的方法构建目标函数,通过Monte Carlo算法完成抽样,采用多岛遗传算法实现二阶接触参数优化并调整安装误差,对比了优化前后的安装误差差异。结果表明:6σ稳健优化过程有助于印痕特征形成更稳定的安装误差,可靠度超过99.993 7%,实现了印痕中心波动程度的大幅减小,获得了稳定性更高的齿轮系统。处于不同的二阶接触参数下对应的印痕特征也存在显著差异,减小了各安装误差下传动误差。6σ稳健设计传动误差波动相对确定性优化方法减小了30%。对比了所提出的优化方法和确定性优化方法差异性,表明采用本文设计的稳健性方法满足可靠性要求。

关键词：锥齿轮安装误差接触印痕特性 6σ稳健性优化设计

Unveiling non-radiative center control in CsPbBr_(3) nanocrystals:A comprehensive comparative analysis of hot injection and ligandassisted reprecipitation approaches

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Nano Research 2024年第5期17卷 4525-4534页

作者： Daocheng Hong Yuchen Zhang Shuhan Pan Hanyu Liu Wei Mao Wanli Zhang Yuhui Ye Zhihong Wei Xuxing Lu xiaoyong Wang Zhenda Lu Yuxi Tian Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China College of Engineering and Applied Sciences Nanjing UniversityNanjing 210023China National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China School of Electronic Electrical Engineering and PhysicsFujian University of TechnologyFuzhou 350118China

Metal-halide perovskite nanocrystals(NCs)have gained significant attention in the field of optoelectronic and photonic devices due to their promising applications.Despite their exceptional optical properties,the impact of different synthetic strategies on the fundamental nature of NCs,such as nonradiative recombination centers,remains poorly understood.In this study,we investigated the photophysical properties of CsPbBr_(3) NCs synthesized using two distinct methods,hot injection and ligand-assisted reprecipitation,at the individual particle level.We observed different blinking behaviors under specific photoexcitation power densities and proposed,through intensity-lifetime analysis and Monte-Carlo simulations,that these different synthetic strategies can fabricate NCs with similar crystal structures but distinct surface quenchers with varying energy levels,which significantly affected the photo-induced blinking-down and blinking-up behaviors in individual NCs.Our findings indicate a practical and feasible approach for controlling defect engineering in perovskite NCs,with significant implications for their use in optoelectronic and other technological applications.

关键词： metal-halide perovskite nanocrystals photophysical properties nonradiative recombination centers hot injection method ligand-assisted reprecipitation

Analyzing impurities and trace element distributions in quartz:Insight from the gneiss and pegmatite

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Analyzing impurities and trace element distributions in quar...

Overlooked uneven progress across sustainable development goals at the global scale: Challenges and opportunities

第十届全国成矿理论与找矿方法学术讨论会

作者：贾木娜 XIA Mei HOU Zhenhui yang xiaoyong CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space SciencesUniversity of Science and Technology of China

1 Introduction Quartz,a widely occurring mineral found in diverse geological settings,plays a vital role as a source of silica,facilitating a wide range of applications including glass production,ceramics,refractory m...

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The Innovation 2024年第2期5卷 42-50页

作者： Yali Liu Jianqing Du Yanfen Wang xiaoyong Cui Jichang Dong Pan Gu Yanbin Hao Kai Xue Hongbo Duan Anquan Xia Yi Hu Zhi Dong Bingfang Wu Jüurgen P.Kropp Bojie Fu School of Grassland Science Beijing Forestry UniversityBeijing 100083China Beijing Yanshan Earth Critical Zone National Research Station University of Chinese Academy of SciencesBeijing 101408China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Tibetan Plateau Earth System Environment and ResourcesChinese Academy of SciencesBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China School of Economics and Management University of Chinese Academy of SciencesBeijing 100190China School of Humanities University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau BiologyChinese Academy of SciencesXining 810001China School of Innovation and Entrepreneurship University of Chinese Academy of SciencesBeijing 100190China State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100101China Potsdam Institute for Climate Impact Research 14412 PotsdamGermany Institute for Environmental Science and Geography University of Potsdam14412 PotsdamGermany State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Differences in progress across sustainable development goals(SDGs)are widespread globally;meanwhile,the rising call for prioritizing specific SDGs may exacerbate such gaps.Nevertheless,how these progress differences would influence global sustainable development has been long neglected.Here,we present the first quantitative assessment of SDGs’progress differences globally by adopting the SDGs progress evenness index.Our results highlight that the uneven progress across SDGs has been a hindrance to sustainable development because(1)it is strongly associated with many public health risks(e.g.,air pollution),social inequalities(e.g.,gender inequality,modern slavery,wealth gap),and a reduction in life expectancy;(2)it is also associated with deforestation and habitat loss in terrestrial and marine ecosystems,increasing the challenges related to biodiversity conservation;(3)most countries with low average SDGs performance show lower progress evenness,which further hinders their fulfillment of SDGs;and(4)many countries with high average SDGs performance also showcase stagnation or even retrogression in progress evenness,which is partly ascribed to the antagonism between climate actions and other goals.These findings highlight that while setting SDGs priorities may be more realistic under the constraints of multiple global stressors,caution must be exercised to avoid new problems from intensifying uneven progress across goals.Moreover,our study reveals that the urgent needs regarding SDGs of different regions seem complementary,emphasizing that regional collaborations(e.g.,demand-oriented carbon trading between SDGs poorly performed and well-performed countries)may promote sustainable development achievements at the global scale.

关键词： globally priori inequality

经腹完全腹腔镜肾输尿管全长切除术对肾移植术后上尿路尿路上皮癌的疗效

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中华医学杂志 2022年第44期102卷 3532-3536页

作者：王伟徐岳任亮杨晓勇王玮尹航张小东胡小鹏首都医科大学附属北京朝阳医院泌尿外科北京100020

目的探讨单一体位完全经腹途径腹腔镜肾输尿管全长切除+膀胱袖口状切除治疗肾移植术后上尿路尿路上皮癌的安全性和疗效。方法回顾性分析2016年5月至2019年12月首都医科大学附属北京朝阳医院收治的肾移植术后原上尿路尿路上皮癌患者临床... 详细信息

目的探讨单一体位完全经腹途径腹腔镜肾输尿管全长切除+膀胱袖口状切除治疗肾移植术后上尿路尿路上皮癌的安全性和疗效。方法回顾性分析2016年5月至2019年12月首都医科大学附属北京朝阳医院收治的肾移植术后原上尿路尿路上皮癌患者临床资料。17例患者行传统经后腹腔腹腔镜原肾输尿管全长切除+膀胱袖口状切除术(根据肿瘤位置分为移植肾同侧组9例和移植肾对侧组8例);24例患者行单一体位完全腹腔镜下原肾输尿管全长切除+膀胱袖口状切除术(根据肿瘤位置分为移植肾同侧组14例和移植肾对侧组10例)。记录并分析所有患者围手术期的相关临床资料,对两种手术方式的手术指标进行比较。结果纳入41例患者,男16例,女25例,年龄57(53,70)岁。单一体位对侧组手术时间短于单一体位同侧组及后腹腔对侧组、同侧组,差异均有统计学意义[(95±44)、(159±49)、(196±20)、(205±21)min,均P<0.01];上述各组术中出血量[(84±39)、(106±44)、(109±20)、(112±21)ml,P=0.271]、住院时间[(10.6±2.1)、(11.8±1.7)、(10.3±1.5)、(11.4±1.5)d,P=0.171]差异均无统计学意义。术后随访24个月,13例患者出现对侧复发或转移,8例出现膀胱内复发,5例死于上尿路尿路上皮癌。结论单一体位全腹腔镜治疗肾移植术后原肾输尿管肿瘤具有手术时间短的优点,同时不增加术中出血及围手术期并发症,适用于治疗移植肾术后原尿路尿路上皮癌,尤其适用于移植肾对侧的原肾及输尿管切除。

关键词：肾移植移形细胞癌移植后肿瘤肾输尿管切除术

怎样界定社会主义市场经济条件下的生产劳动——对马克思生产劳动理论发展和运用的几点看法

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当代经济研究 2007年第12期 6-8页

作者：杨小勇复旦大学应用经济学博士后流动站上海200433

在社会主义市场经济条件下发展马克思生产劳动理论,对社会主义市场经济条件下的生产劳动进行科学界定,是研究社会主义社会劳动和劳动价值理论的首要任务。从理论上界定社会主义市场经济条件下的生产劳动,必须把"生产劳动"和"物质生产劳... 详细信息

在社会主义市场经济条件下发展马克思生产劳动理论,对社会主义市场经济条件下的生产劳动进行科学界定,是研究社会主义社会劳动和劳动价值理论的首要任务。从理论上界定社会主义市场经济条件下的生产劳动,必须把"生产劳动"和"物质生产劳动"区分开来,必须使"生产劳动"与社会主义的"生产目的"相吻合,必须打破生产劳动比非生产劳动重要的观念。只有具有实实在在的劳动成果的劳动才能算作社会主义生产劳动。

关键词：社会主义市场经济生产劳动非生产劳动

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四川大学的宗教社会学研究回顾与展望

宗教学研究 2005年第3期 184-188页

作者：杨骁勇四川大学社会学系

四川大学的宗教社会学研究,从20世纪初孕育于人类学、社会学,到后来藉着民族学、宗教学得以发展,一直到今天形成从硕士到博士的专业人才培养体系,走过了一条并不平坦的道路,其间也凝聚着三代学者的不懈努力。

关键词：西部本土宗教社会学学科建设