检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

孕期体重增长对0~3岁儿童生长轨迹的影响

卫生研究 2024年第3期53卷 375-381页

作者：杨雅涵叶梓李俊王杰中国疾病预防控制中心营养与健康所中国疾病预防控制中心母乳科学研究重点实验室国家卫生健康委公共营养与健康重点实验室北京100050 太仓市妇幼保健计划生育服务中心苏州215413

目的分析0~3岁儿童年龄别体质指数Z评分(body mass index for age Z score,BAZ)的轨迹,并探讨孕期体重增长水平与儿童BAZ轨迹的关联。方法基于前瞻性队列研究,于2013年至2017年在江苏太仓地区招募孕早期孕妇作为研究对象,追踪其孕期体... 详细信息

目的分析0~3岁儿童年龄别体质指数Z评分(body mass index for age Z score,BAZ)的轨迹,并探讨孕期体重增长水平与儿童BAZ轨迹的关联。方法基于前瞻性队列研究,于2013年至2017年在江苏太仓地区招募孕早期孕妇作为研究对象,追踪其孕期体重变化,采用中国标准计算和评价孕期体重增长(孕期体重增长适宜、不足或过多)。测量儿童出生、1、3、6、8、12、18、24、30和36月龄时的身高/身长和体重,并计算各年龄的BAZ分值。采用基于组的轨迹模型拟合儿童BAZ轨迹。运用多水平Logistic回归分析孕期体重增长水平与BAZ轨迹之间的关联,并调整相关影响因素对结果的影响。结果1864对母婴数据被纳入分析,其中0~3岁儿童的BAZ可拟合为3组轨迹:生长较缓组(34.07%)、生长适宜组(48.23%)和生长快速组(17.70%)。单因素分析显示,以孕期体重增长适宜的母亲为对照组,孕期体重增长不足会增加子代生长较缓的风险(OR=1.95,95%CI 1.28~2.96),孕期体重增长过多可增加子代生长快速的风险(OR=1.57,95%CI 1.19~2.07);多因素分析中调整了母亲孕前体质指数、产次、儿童性别及出生体重后,孕期体重增长不足的母亲其子代生长较缓的风险更高(OR=1.84,95%CI 1.19~2.84);而孕期体重增长过多与儿童早期生长轨迹间关联无统计学意义(OR=1.26,95%CI 0.94~1.68)。结论0~3岁儿童BAZ轨迹可分为生长较缓组、生长适宜组及生长快速组;母亲孕期体重增长不足可增加0~3岁儿童生长较缓的风险。

关键词：生长轨迹孕期体重增长婴幼儿 BAZ评分

Globalization and Inflation

在线全文

学校读者我要写书评

暂无评论

China Finance and Economic Review 2023年第3期12卷 25-44页

作者： Xiaofen Tan Xinkang Wang yahan yang School of Economics and Management Beihang University School of Finance Central University of Finance and Economics

Deglobalization and elevated inflation are important features of the current world *** the reversing of globalization affect the level and formation mechanism of inflation in the countries(or regions)?This paper selects 163 sample economies and constructs an index system in measurement of *** such basis,it integrates the index system into the hybrid Phillips curve under the condition of open economy to study the influence of globalization on inflation and the logical mechanism and to further evaluate the driving effect of deglobalization on global *** result shows a deflation effect of globalization,and the effect decreases first and then grow as the globalization level of a country(or region)*** further investigate the formation mechanism of inflation,the paper decomposes inflation into inflation trend and inflation *** far as inflation trend is concerned,trade globalization marked by participation in global value chain is the main driver of downward infation trend in developed economies,while globalization of information and finance is the primary driver of downward trend in emerging and developing *** to inflation cycle,trade globalization makes inflation cycle of the countries(or regions)more sensitive to price of international commodities and forms a linkage through trade *** the outbreak of the major public health emergency in 2020,the reversing of globalization drove up inflation of the countries(or regions),and those with higher participation in global value chain have higher level of inflation.

关键词： globalization inflation hybrid Phillips curve global value chain international commodities

ClO_(2)纳米雾化处理对绿豆芽品质及褐变的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

食品科技 2024年第1期49卷 41-47页

作者：梁静怡高拦杨雅涵姚莉莉额日赫木李国琴朱洪梅山西师范大学食品科学学院山西太原030001

为探讨不同浓度二氧化氯(ClO_(2))纳米雾化熏蒸处理对绿豆芽贮藏品质的影响,用1、1.5、2g/L和2.5 g/L 4种浓度的ClO_(2)和蒸馏水(对照)熏蒸2 h,熏蒸结束后,置于(23±1)℃贮藏,每天测定其褐变、硬度、维生素C等理化和抗氧化指标。结果表... 详细信息

为探讨不同浓度二氧化氯(ClO_(2))纳米雾化熏蒸处理对绿豆芽贮藏品质的影响,用1、1.5、2g/L和2.5 g/L 4种浓度的ClO_(2)和蒸馏水(对照)熏蒸2 h,熏蒸结束后,置于(23±1)℃贮藏,每天测定其褐变、硬度、维生素C等理化和抗氧化指标。结果表明,ClO_(2)熏蒸处理能有效抑制绿豆芽的失水作用,减缓硬度和维生素C的下降,增加黄酮和总酚含量,抑制多酚氧化酶(Polyphenol oxidase PPO)、过氧化物酶(Peroxidase,POD)、果胶酶、纤维素酶活性;从显微结构来看1 g/L ClO_(2)处理下的绿豆芽下胚轴横截面维管柱空洞面积和细胞壁破坏程度最小;通过相关性分析结果发现,绿豆芽褐变指数与品质指标和抗氧化酶活性之间显著(P<0.05)相关。综合各项指标结果,1 g/L ClO_(2)处理的保鲜效果更优,可有效保持贮藏期间绿豆芽的商品价值。

关键词：绿豆芽褐变抗氧化酶相关性分析

The critical need to establish standards for data quality in intelligent medicine

在线全文

学校读者我要写书评

暂无评论

Intelligent Medicine 2021年第2期1卷 49-50页

作者： Ruiyang Li yahan yang Haotian Lin State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CentreSun Yat-sen UniversityGuangzhouGuangdong 510623China Centre for Precision Medicine Sun Yat-sen UniversityGuangzhouGuangdong 510080China

Medical artificial intelligence(AI)is an important technical asset to support medical supply-side reforms and national development in the big data *** data from multiple disciplines represent building blocks for the development and application of AI-aided diagnostic and treatment systems based on medical big ***,the inconsistent quality of these data resources in AI research leads to waste and ***,it is crucial that the field formulatesthe requirements and content related to data processing as part of the development of intelligent *** promote medical AI research worldwide,the“Belt and Road”International Ophthalmic Artificial Intelligence Research and Development Alliance will establish a series of expert recommendations for data quality in intelligent medicine.

关键词： Artificial intelligence Intelligent medicine Big data Data collection Data storage Data management

The unimodal latitudinal pattern of K,Ca and Mg concentration and its potential drivers in forest foliage in eastern China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Forest Ecosystems 2024年第3期11卷 318-328页

作者： Zhijuan Shi Sining Liu yahan Chen Dongdong Ding Wenxuan Han Key Laboratory of Plant-Soil Interactions Ministry of EducationCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing100193China Forestry Ecological Engineering in the Upper Reaches of the yangtze River Key Laboratory of Sichuan Province&National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the yangtze River College of ForestrySichuan Agricultural UniversityChengdu611130China Institute of Botany Chinese Academy of SciencesBeijing100093China

Potassium(K),calcium(Ca),and magnesium(Mg)are essential elements with important physiological functions in *** studies showed that leaf K,Ca,and Mg concentrations generally increase with increasing ***,recent meta-analyses suggested the possibility of a unimodal pattern in the concentrations of these elements along latitudinal *** authenticity of this unimodal latitudinal pattern,however,requires validation through large-scale field experimental data,and exploration of the underlying mechanisms if the pattern is ***,we collected leaves of common species of woody plants from 19 montane forests in the north-south transect of eastern China,including 322 species from 160 genera,67 families;and then determined leaf K,Ca,and Mg concentrations to explore their latitudinal patterns and driving *** results support unimodal latitudinal patterns for all three elements in woody plants across eastern China,with peak values at latitude 36.5±1.0°*** shift of plant-functional-type compositions from evergreen broadleaves to deciduous broadleaves and to conifers along this latitudinal span was the key factor contributing to these *** factors,mainly temperature,and to a lesser extent solar radiation and precipitation,were the main environmental *** factors,by altering the composition of plant communities and regulating plant physiological activities,influence the latitudinal patterns of plant nutrient *** findings also suggest that high leaf K,Ca,and Mg concentrations may represent an adaptive strategy for plants to withstand water stress,which might be used to predict plant nutrient responses to climate changes at large scales,and broaden the understanding of biogeochemical cycling of K,Ca,and Mg.

关键词： Potassium Calcium Magnesium Mid-latitudes Latitudinal pattern Plant functional type Water stress Woody plant

混凝土轴压受载声发射特征及失稳演化过程研究

在线全文

学校读者我要写书评

暂无评论

工业建筑 2024年第2期54卷 161-166页

作者：杨亚晗于泽明李参天朱成发王炳树张春会于志兵欧阳韦张新为北京科技大学北京100083 北京建筑材料检验研究院股份有限公司北京100041 北京建筑材料科学研究总院有限公司北京100041 华北水利水电大学郑州450045 河北科技大学石家庄050018 四川省交通建设集团有限责任公司成都610047 中电建路桥集团有限公司北京100044 中建路桥集团有限公司石家庄050000

桥梁桩基混凝土承受轴向压载过大,其内部破坏开裂过程会释放弹性波,为量化压载失稳演化过程特征,通过现场原位钻取桥梁桩基结构芯样,采用轴向压载与声发射同步监测试验,研究混凝土试件加载全过程声发射时空演化特征,分析混凝土材料压载... 详细信息

桥梁桩基混凝土承受轴向压载过大,其内部破坏开裂过程会释放弹性波,为量化压载失稳演化过程特征,通过现场原位钻取桥梁桩基结构芯样,采用轴向压载与声发射同步监测试验,研究混凝土试件加载全过程声发射时空演化特征,分析混凝土材料压载失稳破坏全过程与声发射振铃计数、能量释放、震源定位等表征参数的演化关系,获得加载过程与声发射特征关联性的定量描述,分析其失稳演化过程。研究结果表明:轴向压载条件下混凝土试件的应力与声发射振铃计数、能量释放随时间的变化规律具有一致性,声发射定位点主要在剪应力集中区形成宏观“定位带”与混凝土裂缝发展及破坏表现一致,可根据声发射事件活跃度量化判断混凝土受载阶段,反映混凝土失稳临界特征,对桩基混凝土服役监测具有重要意义。

关键词：桩基混凝土声发射特征振铃计数能量失稳演化过程

Expert recommendations on data collection and annotation of two dimensional ultrasound images in azoospermic males for evaluation of testicular spermatogenic function in intelligent medicine

在线全文

学校读者我要写书评

暂无评论

Intelligent Medicine 2022年第2期2卷 97-102页

作者： Wanling Huang Yifan Xiang yahan yang Qing Tang Guangjian Liu Hong yang Erjiao Xu Huitong Lin Zhixing Zhang Zhe Ma Zhendong Li Ruiyang Li Anqi Yan Haotian Lin Zhu Wang Chinese Association of Artificial Intelligence Medical Artificial Intelligence Branch of the Guangdong Medical Association Department of Medical Ultrasonics Institute of Diagnostic and Interventional UltrasoundFirst Affiliated Hospital of Sun Yat-Sen UniversityGuangzhouGuangdong 510080China State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-Sen UniversityGuangzhouGuangdong 510080China Department of Medical Ultrasound First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong 510120China Department of Medical Ultrasonics Sixth Affiliated HospitalSun Yat-Sen UniversityShenzhen 510665China Department of Medical Ultrasound First Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi Zhuang Autonomous Region530021China Department of Medical Ultrasonics Eighth Affiliated HospitalSun Yat-Sen UniversityShenzhen 518033China Department of Medical Ultrasonics Seventh Affiliated HospitalSun Yat-Sen UniversityShenzhen 518107China NHC Key Laboratory of Male Reproduction and Genetics Guangdong Provincial Reproductive Science InstituteGuangdong Provincial Fertility HospitalGuangzhouGuangdong 510600China Department of Medical Ultrasonics First Affiliated Hospital of Shandong First Medical UniversityShandong Provincial Qianfoshan HospitalJinanShandong 250014China Department of Medical Ultrasonics Lanzhou University Second HospitalLanzhouGansu 730030China Zhongshan School of Medicine Sun Yat-Sen UniversityGuangzhouGuangdong 510080China 不详

Testicular two-dimensional ultrasound is a testing modality that is often used to evaluate azoospermia and other related *** the continuous development of deep learning in recent years,the combination of deep learning and testicular ultrasound appears unstoppable despite a lack of relevant *** of the major problems associated with the digitization of ultrasound images is the uneven quality of data however,and a standardized data source and acquisition process has not yet been *** a standard could fill the current gap,and establish acquisition criteria for ultrasound images of testes during the male reproductive period,including grayscale ultrasound,shear wave elastography,and contrast-enhanced *** following these guidelines the quality of testicular ultrasound images would be improved and standardized,which would lay a solid foundation for the standardization of testicular ultrasound images,and assist automated evaluation of testicular spermatogenic function of whole testis in azoospermic males.

关键词： Ultrasound Azoopsermia Testicular spermatogenic function

Expert recommendations on collection and annotation of otoscopy images for intelligent medicine

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Medicine 2022年第4期2卷 230-234页

作者： Yuexin Cai Junbo Zeng Liping Lan Suijun Chen Yongkang Ou Linqi Zeng Qintai yang Peng Li Yubin Chen Qi Li Hongzheng Zhang Fan Shu Guoping Chen Wenben Chen yahan yang Ruiyang Li Anqi Yan Haotian Lin Yiqing Zheng Department of Otolaryngology Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouGuangdong 510120China Shenshan Medical Center Sun Yat-sen Memorial HospitalSun Yat-sen UniversityShanweiGuangdong 516600Chin Zhongshan Ophthalmic Center Sun Yat-sen UniversityState Key Laboratory of OphthalmologyGuangzhouGuangdong 510623China Zhongshan School of Medicine Sun Yat-sen UniversityGuangzhouGuangdong 510080China Department of Otolaryngology Head and Neck Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510630China Department of Otolaryngology-Head and Neck Surgery Nanfang HospitalSouth Medical UniversityGuangzhouGuangdong 510515China Department of Otolaryngology-Head&Neck Surgery Zhujiang HospitalSouth Medical UniversityGuangzhouGuangdong 510280China Department of Otolaryngology Zhongshan City People’s HospitalZhongshan Affiliated Hospital of Sun Yat-sen UniversityZhongshanGuangdong 528403China

Middle and outer ear diseases are common otological diseases *** and otoendoscopy exami-nations are essential first steps in the evaluation of patients with otological *** often occurs when the doctor lacks experience in interpreting the results of otoscopy or otoendoscopy,leading to delays in treatment or *** deep learning to process otoscopy images and developing otoscopic artificial-intelligence-based decision-making systems will become a significant trend in the ***,the uneven quality of otoscopy images is among the major obstacles to development of such artificial intelligence systems,and no standardized process for data acquisition,and annotation of otoscopy images in intelligent medicine has yet been fully *** standards for data storage and data management are unified with those of other specialties and are introduced in detail *** expert recommendation criterion improved and standardized the collection and annotation procedures for otoscopy images and fills the current gap in otologic intelligent medicine;it would thus lay a solid foundation for the standardized collection,storage,and annotation of oto-scopy images and the application of training algorithms,and promote the development of automatic diagnosis and treatment for otological *** full text introduced image collection(including patient preparation,equipment standards,and image storage),image annotation standards,and quality control.

关键词： Otoscopy image Intelligent medicine Annotation Collection

Recommendation on data collection and annotation of ocular appearance images in ptosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Medicine 2023年第4期3卷 287-292页

作者： Jie Meng Binying Lin Dongmei Li Shiqi Hui Xuanwei Liang Xianchai Lin Zhen Mao Xingyi Li Zuohong Li Rongxin Chen yahan yang Ruiyang Li Anqi Yan Haotian Lin Danping Huang Chinese Association of Artificial Intelligence,Medical Artificial IntelligenceBranch of Guangdong Medical Association Zhongshan Ophthalmic Center Sun Yat-sen UniversityState Key Laboratory of OphthalmologyGuangzhouGuangdong 510080China Beijing Tongren Eye Center Beijing Key Laboratory of Intraocular Tumor Diagnosis and TreatmentBeijing Ophthalmology&Visual Sciences Key LabMedicalArtificial Intelligence Research and Verification Key Laboratory of the Ministry of Industry and Information TechnologyBeijing Tongren HospitalCapital MedicalUniversityBeijing 100730China Zhongshan School of Medicine Sun Yat-sen UniversityGuangzhouGuangdong 510080China

Ptosis is a common ophthalmologic condition,and the diagnosis is primarily based on ocular *** of such conditions can be improved using emerging technology such as artificial ***,unified data collection and labeling standards have not yet been *** directlyimpacts the accuracy of ptosis diagnosis based on appearance ***,in the present study,we aimedto establish a procedure to obtain and label images to devise a recommendation system for optimal recognitionof ptosis based on ocular *** would help to standardize and facilitate data sharing and serve as aguideline for the development and improvisation of algorithms in artificial intelligence for ptosis.

关键词： Ptosis Ocular appearance image Annotation standard Artificial intelligence