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琥珀酸亚铁片联合饮食调养治疗缺铁性贫血孕妇的临床效果观察

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实用妇科内分泌电子杂志 2024年第13期11卷 60-62页

作者：李梅娇德保县人民医院产科广西百色533700

目的探究琥珀酸亚铁片联合饮食调养治疗缺铁性贫血孕妇的临床效果。方法选取80例缺铁性贫血孕妇,根据随机数字表法分为对照组(采用饮食调养)与研究组(采用琥珀酸亚铁片联合饮食调养),每组40例。对比两组孕妇的临床疗效、治疗前后血常... 详细信息

目的探究琥珀酸亚铁片联合饮食调养治疗缺铁性贫血孕妇的临床效果。方法选取80例缺铁性贫血孕妇,根据随机数字表法分为对照组(采用饮食调养)与研究组(采用琥珀酸亚铁片联合饮食调养),每组40例。对比两组孕妇的临床疗效、治疗前后血常规指标及血清铁蛋白(SF)水平。结果研究组总有效率(95.00%)高于对照组(80.00%)(P0.05),治疗后研究组均较对照组高(P<0.05)。结论缺铁性贫血孕妇采用琥珀酸亚铁片联合饮食调养治疗效果比较理想,应用价值较高。

关键词：琥珀酸亚铁片饮食调养缺铁性贫血

高层住宅薄陶瓷保温一体板与钢托架岩棉板组合节能系统施工技术研究

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建设科技 2024年第10期 47-49页

作者：李梅交中国水利水电第十一工程局有限公司郑州450000

为满足高层住宅建筑外墙外保温层的安全性、节能性、美观性,需要对高层住宅建筑外墙进行保温系统设计,选用具有提高隔热性能且安全环保的外保温组合系统。本文以三门峡市大修厂周边棚户区改造(黄河新城)工程设计施工总承包项目为例,总... 详细信息

为满足高层住宅建筑外墙外保温层的安全性、节能性、美观性,需要对高层住宅建筑外墙进行保温系统设计,选用具有提高隔热性能且安全环保的外保温组合系统。本文以三门峡市大修厂周边棚户区改造(黄河新城)工程设计施工总承包项目为例,总结形成高层住宅薄陶瓷保温一体板+钢托架岩棉板组合节能系统施工技术,以供同行参考和借鉴。

关键词：高层住宅薄陶瓷保温一体板+钢托架岩棉板施工技术

果胶与多酚相互作用机制及其对食品加工特性影响的研究进展

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食品工业科技 2024年第1期45卷 378-386页

作者：张璇赵文高哲李美娇吴梦颖周茜河北农业大学食品科技学院河北保定071000 河北省农产品加工工程技术研究中心河北保定071000

果胶和多酚共存于植物性食品体系中。除天然存在的果胶-多酚复合物外,在受到加热、高压、干燥等外力作用的食品加工过程中,两者会快速且自发地进行相互作用。果胶与多酚之间的相互作用会影响食品的理化性质和功能特性。本文总结了果胶... 详细信息

果胶和多酚共存于植物性食品体系中。除天然存在的果胶-多酚复合物外,在受到加热、高压、干燥等外力作用的食品加工过程中,两者会快速且自发地进行相互作用。果胶与多酚之间的相互作用会影响食品的理化性质和功能特性。本文总结了果胶与多酚相互作用的机制、内部和外部多重影响因素、主要的研究方法并结合Langmuir和Freundlich常见的等温吸附模型对果胶与多酚之间的吸附行为进行描述和定量表征。此外还探讨了两者相互作用对食品加工特性及多酚生物可利用性的影响,分析了该领域的研究方向和发展趋势。

关键词：果胶多酚相互作用等温吸附模型生物可利用性

面向智能在线教学的英语时态习题自动分类研究

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计算机科学 2024年第4期51卷 353-358页

作者：屠鑫张伟李继东李美姣龙相波云南大学职业与继续教育学院昆明650091 重庆三峡学院智能信息处理与控制重庆市高校重点实验室重庆404100

随着在线教学逐渐成为常态化的教学方式之一,人们对其提出了更高质量的教学需求。各种在线教学平台及互联网上海量的教育资源大大便利了众多学习者,但同时也存在着教育资源丰富但质量参差不齐、缺乏有效的分类整合以及主要依靠人工整理... 详细信息

随着在线教学逐渐成为常态化的教学方式之一,人们对其提出了更高质量的教学需求。各种在线教学平台及互联网上海量的教育资源大大便利了众多学习者,但同时也存在着教育资源丰富但质量参差不齐、缺乏有效的分类整合以及主要依靠人工整理等问题,这就导致人们在获取在线教育资源时往往需要花费大量的时间和精力来进行检索、甄别和整理。针对在线教育资源现存的不足,文中提出了基于自然语言处理技术的在线教育资源自动分类方法,并以中学英语语法重点内容八大英语时态的习题自动分类为例,收集了线上及线下共9万余条时态类习题,通过数据清洗,最终选择3万余条语句构建数据集,并构建BERT微调文本分类模型,通过训练模型实现了对八大时态的自动分类,整体分类准确率达到86.15%,其中对一般现在时的识别准确率最高,达到93.88%。可以一定程度上满足中学英语时态类教育资源自动分类整理、习题智能批改及个性化推送、智能问答等现实需要,为提高在线教学质量,整合在线教育资源提供可行的思路和解决方案。

关键词：在线教学自然语言处理英语时态分类

Evaluating the accuracy of Chinese pasture data in global historical land use datasets

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Science China Earth Sciences 2018年第11期61卷 1685-1696页

作者： Fanneng HE Shicheng li Fan YANG meijiao li Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Department of Land Resource Management School of Public Administration China University of Geosciences Wuhan 430074 China University of Chinese Academy of Sciences Beijing 100049 China

Global historical land use datasets are widely used in global environmental change studies; however, uncertainties in the included pasture data have not been evaluated. In this study, using trend, relative difference ratio(RDR), and spatial comparisons, we evaluated the accuracy of China pasture data in the HYDE(versions 3.1 and 3.2), SAGE, and PJ datasets using historical document-based reconstructions, including the land use datasets for China covering 1935–1997(hereafter Ge-dataset)and Northeast China covering the 1700 s–2000(hereafter Ye-dataset), and the satellite-based China's Land-Use/cover Datasets(CLUDs) for 1980–2015. Four important results were obtained.(1) China pasture area in the HYDE, SAGE, and PJ datasets and grassland area in the Ge-dataset, Ye-dataset, and CLUDs show both disparate trends and large differences in absolute values.(2)Spatially, 50.9%, 52.8%, and 63.0% pasture/grassland grids in 2000 had RDRs greater than 60% between HYDE3.1, HYDE3.2,and SAGE datasets, and CLUDs, respectively. The percentage of grids with RDRs less than 20% were 24.9%, 26.7%, and 16.0%,respectively.(3) Based on HYDE3.2, the spatial distribution of pasture in Northeast China over the last 300 year has expanded,which is in contrast to the results from the Ye-dataset, which shows the spatial distribution of grassland shrinking because of human reclamation activities.(4) The large contrasts between the global datasets and Chinese native datasets are due to differences in pasture/grassland definitions, land use practices, and spatial reconstruction methods.

关键词： Historical pasture/grassland Global datasets Accuracy evaluation China

Evaluating the reliability of global historical land use scenarios for forest data in China

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Journal of Geographical Sciences 2020年第7期30卷 1083-1094页

作者： YANG Fan HE Fanneng li meijiao li Shicheng Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China School of Public Administration China University of GeosciencesWuhan 430074China

Global historical land use scenarios are widely used to simulate the climatic and ecological effects of changes in land cover;however,reliability evaluation of these scenarios for data on China’s forests is *** using a historical document-derived Chinese forest dataset(CHFD)for the years 1700–2000,we evaluated the reliability of data on forests in China over three global scenarios-SAGE(Center for Sustainability and the Global Environment),PJ(Pongratz Julia),and KK10(Kaplan and Krumhardt 2010)-through trend-related,quantitative,and spatial *** results show the following:(1)Although the area occupied by forests in China in the SAGE,PJ,KK10,and CHFD datasets decreased over the past 300 years,there were large differences between global scenarios and *** area occupied by forests in China in the SAGE scenario for 1700–1990 was 20%–40%more than that according to CHFD,and that occupied by forests in the KK10 from 1700 to 1850 was 32%–46%greater than that in *** difference between the PJ and CHFD was lower than 20%for most years.(2)Large differences were detected at the provincial and grid cell scales,where the PJ scenario was closer to CHFD in terms of total forested *** with large differences in terms of trend and quantity were 84%and 92%of all provinces,*** cells with relative differences greater than 70%accounted for 60%–80%of all grids.(3)These global historical land use scenarios do not accurately reveal the spatiotemporal pattern of Chinese forests due to differences in the data sources,methods of reconstruction,and spatial scales.

关键词： land use historical forest natural vegetation global scenarios reliability evaluation China

Spatially explicit reconstruction of cropland cover for China over the past millennium

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Science China Earth Sciences 2023年第1期66卷 111-128页

作者： Fanneng HE Fan YANG Caishan ZHAO Shicheng li meijiao li Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Key Research Institute of Yellow River Civilization and Sustainable Development&Collaborative Innovation Center on Yellow River Civilization Jointly Built By Henan Province and Ministry of Education Henan UniversityKaifeng 475001China University of Chinese Academy of Sciences Beijing 100049China School of Public Administration China University of GeosciencesWuhan 430074China College of Resources and Environment Shanxi University of Finance and EconomicsTaiyuan 030006China

Reconstructing historical land use and land cover change using explicit temporal,quantitative,and spatial information is not only the prerequisite for simulating long-term climate change and ecological effects but is also a scientific basis for comprehensively understanding the process and mechanism of anthropogenic land use *** changes in historical borders and administrative divisions,a provincial cropland area dataset for China over the past millennium was created on the basis of existing estimations since the Song *** suitability for cultivation was then assessed by incorporating altitude,slope,soil texture,and the maximum potential productivity of ***,a gridding allocation model for cropland was constructed,and the provincial cropland area for 24 years over the past millennium was allocated into grids with a resolution of 10 *** cropland area in China increased from 3.71×10^(7)ha in AD 1000 to 12.92×10^(7)ha in AD 1999,with a peak of 13.50×10^(7)ha in AD *** total cropland area in China showed fluctuating increasing trends that can be divided into three phases:fluctuation without notable net change for AD 1000–1290,slow increase for AD 1290–1661,and rapid increase for AD 1661–***,cropland intensified in the middle-lower reaches of the Yellow and Yangtze Rivers and expanded to mountainous and frontier areas over the last ***,over the entire period,the fractional cropland areas(FCAs)in the middle-lower reaches of the Yellow and Yangtze Rivers increased by 1.4 and 0.8 times,*** the mid-Qing Dynasty,large-scale land reclamation expanded to areas of low reclamation in southwest and northeast *** FCAs for southwest and northeast China increased from 2.13%and 0.55%in AD 1661 to 18.00%and 26.61%in AD 1999,*** AD 1661–1999,the proportion of cropland increased by 55%in the hills and low mountains and 27%in the middle and high *** comparison wit

关键词： Land use and land cover change Historical cropland Gridding reconstruction China Last millennium

Recent progresses of late-transition metal complexes with nonsymmetric diimine ligands in ethylene polymerization and oligomerization

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Chinese Science Bulletin 2014年第21期59卷 2505-2512页

作者： Guoliang Mao Yue Jiang Ning li Qin Wang Dejin Zheng meijiao li Yingnan Ning Provincial Key Laboratory of Oil & Gas Chemical Technology College of Chemistry and Chemical EngineeringNortheast Petroleum University

Researches of late-transition metal complexes for ethylene polymerization and oligomerization have attracted a lot of attention in the last two decades.A large number of late-transition metal complexes with symmetric diimine ligands have been extensively *** the research of unsymmetric diimine late-transition metal complexes was still in the initial stage,some superior performances were observed in olefin *** developments in the research of ethylene polymerization and oligomerization catalyzed by late-transition metal complexes with unsymmetric diimine ligands were summarized in this review,with the influence of complex structure on the catalytic performance of the catalyst analyzed.

关键词：过渡金属配合物乙烯聚合二亚胺非对称后期齐聚配体聚合反应速率

血清ATX、HO-1联合SNAPPE-Ⅱ评分对新生儿急性呼吸窘迫综合征病情和预后的评估价值

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临床肺科杂志 2024年第6期29卷 872-877页

作者：王梦莹贺红岩李美娇常晓丹保定市第二中心医院新生儿科河北保定072750

目的探讨血清自分泌运动因子(ATX)、血红素加氧酶-1(HO-1)联合新生儿急性生理学评分围产期补充Ⅱ(SNAPPE-Ⅱ)评分对新生儿急性呼吸窘迫综合征(NARDS)病情和预后的评估价值。方法选择2018年6月至2021年6月保定市第二中心医院新生儿科... 详细信息

目的探讨血清自分泌运动因子(ATX)、血红素加氧酶-1(HO-1)联合新生儿急性生理学评分围产期补充Ⅱ(SNAPPE-Ⅱ)评分对新生儿急性呼吸窘迫综合征(NARDS)病情和预后的评估价值。方法选择2018年6月至2021年6月保定市第二中心医院新生儿科收治的90例NARDS患儿(NARDS组),根据氧合指数(OI)将NARDS患儿分为轻度组(4mmHg≤OI<8mmHg, 25例)、中度组(8mmHg≤OI<16mmHg, 44例)和重度组(OI≥16mmHg, 21例),另选择60例健康新生儿为对照组。入组当日检测NARDS患儿血清ATX、HO-1水平,入院12h内完成SNAPPE-Ⅱ评分,统计患儿入住新生儿重症监护室(NICU)出院时的生存情况,将NARDS患儿分为生存组(n=71)和死亡组(n=19)。采用单因素和多因素Logistic回归分析影响NARDS患儿预后的因素,受试者工作特征(ROC)曲线分析ATX、HO-1联合SNAPPE-Ⅱ评分预测NARDS患儿预后的价值。结果 NARDS组血清ATX水平,SNAPPE-Ⅱ评分高于对照组,HO-1水平低于对照组(P<0.05)。重度组血清ATX水平,SNAPPE-Ⅱ评分高于中度组和轻度组,HO-1水平低于中度组和轻度组(P<0.05)。多因素Logistic回归分析结果显示,伴脓毒症、高ATX、高SNAPPE-Ⅱ评分是NARDS患儿死亡的危险因素(P<0.05),大胎龄、高出生5min Apgar评分和高HO-1水平是其保护因素(P<0.05)。ATX、HO-1、SNAPPE-Ⅱ评分预测NARDS患儿死亡的曲线下面积为0.699、0.688、0.766,灵敏度为73.68%、68.42%、78.95%,特异度为70.42%、71.83%、74.65%;联合ATX、HO-1和SNAPPE-Ⅱ评分预测NARDS患儿死亡的曲线下面积为0.903,灵敏度为94.74%,特异度为69.01%。结论 NARDS患儿血清ATX水平和SNAPPE-Ⅱ评分显著升高,HO-1水平下降,且与病情加重以及预后不良有关,血清ATX、HO-1联合SNAPPE-Ⅱ评分有助于评估NARDS患儿预后不良风险。

关键词：新生儿急性呼吸窘迫综合征自分泌运动因子血红素加氧酶-1 新生儿急性生理学评分围产期补充Ⅱ 病情分级预后