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同年龄段两性青少年骨骺发育差异性比较2例

法医学杂志 2024年第2期40卷 164-167页

作者：周慧明李丹阳王亚辉司法鉴定科学研究院上海市法医学重点实验室司法部司法鉴定重点实验室上海市司法鉴定专业技术服务平台上海200063 山西医科大学法医学院山西晋中030600 山西医科大学医学科学院山西太原030000

1案例1.1案例11.1.1简要案情2022年6月9日,张某(男)因涉嫌强制猥亵同学,于案发当时被依法刑事拘留。在审讯过程中,张某自报出生于2006年9月22日;户籍资料记载张某出生于2005年9月22日,男性,汉族,公民身份号码为******20050922****。为... 详细信息

1案例1.1案例11.1.1简要案情2022年6月9日,张某(男)因涉嫌强制猥亵同学,于案发当时被依法刑事拘留。在审讯过程中,张某自报出生于2006年9月22日;户籍资料记载张某出生于2005年9月22日,男性,汉族,公民身份号码为******20050922****。为正确处理此案,某市公安局委托本鉴定机构对张某本次摄片时(2022年6月10日)的骨龄进行法医学鉴定。

关键词：法医人类学年龄推断骨骺骨发育分级青少年

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Riesz模范畴的完备性和余完备性

新疆师范大学学报（自然科学版） 2024年第1期43卷 13-21页

作者：李丹阳汤建钢伊犁师范大学数学与统计学院新疆伊宁835000 伊犁师范大学应用数学研究所新疆伊宁835000

范畴论是现代数学的基础,从Riesz模范畴出发,研究Riesz模的内部特征是研究Riesz模的重要方法。范畴的极限是范畴论的重要概念之一,范畴中乘积、等值子概念均可以看作是范畴的某种特殊的极限,余积、余等值子是特殊的余极限。范畴中极限... 详细信息

范畴论是现代数学的基础,从Riesz模范畴出发,研究Riesz模的内部特征是研究Riesz模的重要方法。范畴的极限是范畴论的重要概念之一,范畴中乘积、等值子概念均可以看作是范畴的某种特殊的极限,余积、余等值子是特殊的余极限。范畴中极限的存在性决定了该范畴的完备性,余极限的存在性决定了余完备性。通过对以Riesz模为对象,Riesz模同态为态射的Riesz模范畴极限的研究,给出了Riesz模范畴中的乘积与余积、等值子与余等值子的具体表示形式,进而证明了Riesz模范畴具有完备性和余完备性。

关键词： Riesz模范畴等值子余等值子完备性余完备性

医学统计和机器学习方法在活体年龄推断中的应用

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法医学杂志 2024年第2期40卷 118-127页

作者：李丹阳潘宇周慧明万雷李成涛汪茂文王亚辉司法鉴定科学研究院上海市法医学重点实验室司法部司法鉴定重点实验室上海市司法鉴定专业技术服务平台上海200063 山西医科大学医学科学院山西太原030000 山西医科大学公共卫生学院山西太原030000 山西医科大学法医学院山西晋中030600 上海市浦东新区公利医院司法鉴定所上海210035

活体年龄推断研究中通常需要对大量的数据进行数理统计分析,合理的医学统计方法在数据整理和分析中发挥着重要作用,选择准确、恰当的统计方法是影响研究结果质量的关键因素之一。本文综述了活体年龄推断研究中描述性统计、差异性分析、... 详细信息

活体年龄推断研究中通常需要对大量的数据进行数理统计分析,合理的医学统计方法在数据整理和分析中发挥着重要作用,选择准确、恰当的统计方法是影响研究结果质量的关键因素之一。本文综述了活体年龄推断研究中描述性统计、差异性分析、一致性检验、多元统计分析等较为常用的医学统计方法以及浅层学习、深度学习等机器学习方法的原理和适用原则,并概括介绍了医学统计方法和机器学习方法之间的关联性和应用前景,旨在为活体年龄推断研究获得更为科学、精准的结果提供技术指引。

关键词：法医人类学医学统计学机器学习年龄推断骨龄牙龄综述

基于能量流的纯电动车节能降碳技术研究与应用

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机械研究与应用 2024年第4期37卷 109-113页

作者：姜宏霞李丹阳蒋华梁上汽通用五菱汽车股份有限公司广西柳州545007

文章针对S项目续航不达标问题,设计了其能量流测试方案,通过构建基于能量流理论指导的整车能耗区域分析智能诊断系统,解决了能耗控制研究初期整车能量消耗分布情况难以界定的问题。基于CLTC工况,立足于整车能耗降低、成本管控强化、用... 详细信息

文章针对S项目续航不达标问题,设计了其能量流测试方案,通过构建基于能量流理论指导的整车能耗区域分析智能诊断系统,解决了能耗控制研究初期整车能量消耗分布情况难以界定的问题。基于CLTC工况,立足于整车能耗降低、成本管控强化、用户体验改善等多个优化目标,构建了用于汽车整车能耗控制的多目标协同仿真平台;建立了电动车能耗评价模型及理论回收算法,首次提出能量回收最佳回收率概念,基于整车风阻重量优化、传动效率提升,对回收策略及加速踏板map进行优化,获取整车最佳回收率;建立适用于企业纯电动及混动汽车降阻提效工具包;建立了一套具有企业特色的节能降耗技术研究与应用的流程体系。测试结果表明,该车续航提升40 km以上,电耗降低约0.5 kWh/100 km,并将此工具包应用于其他EV平台,预计节约成本约10亿/年。

关键词：能量流纯电动车续航最佳回收率

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Riesz模范畴中拉回与推出的性质研究

新疆师范大学学报（自然科学版） 2024年第3期43卷 55-63页

作者：余萧雯汤建钢李丹阳伊犁师范大学数学与统计学院新疆伊宁835000 伊犁师范大学应用数学研究所新疆伊宁835000

拉回和推出也称为纤维积和纤维余积,是范畴论中两个重要的对偶概念,属于数学中诸多概念的抽象,具有丰富的内涵。文章在Riesz模范畴中研究拉回与推出的存在性和唯一性。首先引入拉回的概念,构造出满足Riesz模范畴中拉回概念的一个对象和... 详细信息

拉回和推出也称为纤维积和纤维余积,是范畴论中两个重要的对偶概念,属于数学中诸多概念的抽象,具有丰富的内涵。文章在Riesz模范畴中研究拉回与推出的存在性和唯一性。首先引入拉回的概念,构造出满足Riesz模范畴中拉回概念的一个对象和一对态射,并证明拉回的存在性和唯一性;对偶地,在Riesz模范畴中引入同余关系的概念,在此基础上,运用同余关系作商,定义出了Riesz模的商的概念,再对推出的概念进行定义,构造出满足Riesz模范畴中推出概念的一个对象和一对态射,并证明推出的存在性和唯一性。

关键词： Riesz模范畴拉回推出

Application of Optical Hydrogels in Environmental Sensing

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Energy & Environmental Materials 2024年第3期7卷 311-336页

作者： Shuo yang Shruti Sarkar Xing Xie dan li Jianmin Chen Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200438China School of Civil and Environmental Engineering Georgia Institute of TechnologyAtlanta Georgia 30332USA

The ever-increasing complexity of environmental pollutants urgently warrants the development of new detection *** based on the optical properties of hydrogels enabling fast and easy in situ detection are attracting increasing *** this paper,the data from 138 papers about different optical hydrogels(OHs)are extracted for statistical *** detection performance and potential of various types of OHs in different environmental pollutant detection scenarios were evaluated and compared to those obtained using the standard detection *** on this analysis,the target recognition and sensing mechanisms of two main types of OHs are reviewed and discussed:photonic crystal hydrogels(PCHs)and fluorescent hydrogels(FHs).For PCHs,the environmental stimulus response,target receptors,inverse opal structures,and molecular imprinting techniques related to PCHs are reviewed and ***,the different types of fluorophores(i.e.,compound probes,biomacromolecules,quantum dots,and luminescent microbes)of FHs are ***,the potential academic research directions to address the challenges of applying and developing OHs in environmental sensing are proposed,including the fusion of various OHs,introduction of the latest technologies in various fields to the construction of OHs,and development of multifunctional sensor arrays.

关键词： environmental sensors fluorescent hydrogel optical hydrogel photonic crystal hydrogel pollution detection

A phase-field model for simulating the propagation behavior of mixed-mode cracks during the hydraulic fracturing process in fractured reservoirs

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 911-930页

作者： dan ZHANG liangping YI Zhaozhong yang Jingqiang ZHANG Gang CHEN Ruoyu yang Xiaogang li State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu 610059China Tarim Oilfield Company PetroChinaBayingolin Mongolian Autonomous Prefecture 841000Xinjiang Uygur Autonomous RegionChina Wuqi Oil Production Plant Shaanxi Yanchang PetroleumXi'an 716000China Exploration Division of PetroChina Southwest Oil and Gasfield Company Chengdu 610041China

A novel phase-field model for the propagation of mixed-mode hydraulic fractures,characterized by the formation of mixed-mode fractures due to the interactions between fluids and solids,is *** this model,the driving force for the phase field consists of both tensile and shear components,with the fluid contribution primarily manifesting in the tension driving *** displacement and pressure are solved simultaneously by an implicit *** numerical solution's iterative format is established by the finite element discretization and Newton-Raphson(NR)iterative *** correctness of the model is verified through the uniaxial compression physical experiments on fluid-pressurized rocks,and the limitations of the hydraulic fracture expansion phase-field model,which only considers mode I fractures,are *** addition,the influence of matrix mode II fracture toughness value,natural fracture mode II toughness value,and fracturing fluid injection rate on the hydraulic fracture propagation in porous media with natural fractures is studied.

关键词： mixed-mode crack hydraulic fracturing poro-elasticity phase-field method(PFM)

Survey and examination of the potential alternative hosts of Villosiclava virens, the pathogen of rice false smut, in China

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Journal of Integrative Agriculture 2015年第7期14卷 1332-1337页

作者： DENG Qi-de YONG Ming-li li dan-yang LAI Chao-hui CHEN Hong-ming FAN Jing HU Dong-wei The State Key Laboratory of Rice Biology Biotechnology Institute Zhejiang University Plant Protection Station of Xiangshan County Rice Research Institute Sichuan Agricultural University

Rice false smut is caused by ascomycete Villosiclava virens, whose potential alternative hosts have been assumed previ- ously. Here its potential alternative hosts were surveyed and identified from 2008 to 2013 in the main rice-growing regions in China. Two common weeds in paddy fields, Digitaria sanguinalis Scop. and Echinochloa crusgalli （L.） Beauv., were found to present the similar symptoms to smut diseases in a few individuals in 2012 and 2013 in Zhejiang and Sichuan provinces of China, respectively. After the examinations of the spore morphology, their infection and extension mode in hosts, pathogen cell wall components, and molecular identification, the two pathogens were identified to be the Basidiomycetes, Ustilago syntherismae and Ustilago trichophora, respectively. So far there has been no alternative host of V. virens to be identified in China. These suggest that the alternative hosts of V. virens, if they do exist, are not possible to play an important role in the pathogen life cycle and the disease epidemics.

关键词： alternative host Villosiclava virens Digitaria sanguinalis Scop. Echinochloa crusgalli (L.) Beauv. Ustilagospp. rice false smut

The changes in soil organic carbon stock and quality across a subalpine forest successional series

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Forest Ecosystems 2024年第4期11卷 423-433页

作者： Fei li Zhihui Wang Jianfeng Hou Xuqing li dan Wang Wanqin yang Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation School of Life SciencesTaizhou UniversityTaizhou 318000China linhai Station of Zhejiang Provincial Forest Ecological Research Taizhou UniversityTaizhou 318000China Taizhou Key Laboratory of Mountain Ecological Restoration and Special Industry Cultivation Taizhou UniversityTaizhou 318000China Hawkesbury Institute for the Environment Western Sydney UniversityPenrithNew South WalesAustralia

Soil organic carbon(SOC)affects the function of terrestrial ecosystem and plays a vital role in global carbon ***,large uncertainty still existed regarding the changes in SOC stock and quality with forest ***,the stock and quality of SOC at 1-m soil profile were investigated across a subalpine forest series,including shrub,deciduous broad-leaved forest,broadleaf-conifer mixed forest,middle-age coniferous forest and mature coniferous forest,which located at southeast of Tibetan *** results showed that SOC stock ranged from 9.8 to29.9 kg·m^(-2),and exhibited a hump-shaped response pattern across the forest successional *** highest and lowest SOC stock was observed in the mixed forest and shrub forest,*** SOC stock had no significant relationships with soil temperature and litter stock,but was positively correlated with wood debris ***,the average percentages of polysaccharides,lignins,aromatics and aliphatics based on FTIR spectroscopy were 79.89%,0.94%,18.87%and 0.29%,***,the percentage of polysaccharides exhibited an increasing pattern across the forest successional series except for the sudden decreasing in the mixed forest,while the proportions of lignins,aromatics and aliphatics exhibited a decreasing pattern across the forest successional series except for the sudden increasing in the mixed ***,the humification indices(HIs)were highest in the mixed forest compared to the other four successional stages,which means that the SOC quality in mixed forest was worse than other successional *** addition,the SOC stock,recalcitrant fractions and HIs decreased with increasing soil depth,while the polysaccharides exhibited an increasing *** findings demonstrate that the mixed forest had higher SOC stock and worse SOC quality than other successional *** high proportion of SOC stock(66%at depth of 20-100 cm)and better SOC quality(lower HIs)indicate that deep s

关键词： Forest successional series Soil organic cubon stock Molecular composition Humification indices Soil organic carbon quality