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Predictive Ability of Hypertriglyceridemic Waist,Hypertriglyceridemic Waist-to-Height Ratio,and Waist-to-Hip Ratio for Cardiometabolic Risk Factors Clustering Screening among Chinese Children and Adolescents

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Biomedical and Environmental Sciences 2024年第3期37卷 233-241页

作者： xiao tian li YUAN Shu Qian GAO Jing Yu Julien SBaker YANG Yi De WANG Xi Jie ZHENG Chan Juan DONG Yan Hui ZOU Zhi Yong Key Laboratory of Molecular Epidemiology of Hunan Province School of MedicineHunan Normal UniversityChangsha 410081HunanChina The Institute of Interdisciplinary Studies Hunan Normal UniversityChangsha 410013HunanChina Chenzhou First People's Hospital Chenzhou 423000HunanChina Centre for Health and Exercise Science Research Hong Kong Baptist UniversityKowloon TongHong Kong 999077China Department of Sport Physical Education and HealthHong Kong Baptist UniversityKowloon TongHong Kong 999077China Vanke School of Public Health Tsinghua UniversityBeijing 100084China Institute of Child and Adolescent Health School of Public HealthPeking University Health Science CenterBeijing 100191China

Objective Hypertriglyceridemic waist(HW),hypertriglyceridemic waist-to-height ratio(HWHtR),and waist-to-hip ratio(WHR)have been shown to be indicators of cardiometabolic risk ***,it is not clear which indicator is more suitable for children and *** aimed to investigate the relationship between HW,HWHtR,WHR,and cardiovascular risk factors clustering to determine the best screening tools for cardiometabolic risk in children and *** This was a national cross-sectional *** and biochemical variables were assessed in approximately 70,000 participants aged 6–18 years from seven provinces in ***,physical activity,dietary intake,and family history of chronic diseases were obtained through ***,χ2 and logistic regression analysis was *** A significant sex difference was observed for HWHtR and WHR,but not for HW *** risk of cardiometabolic health risk factor clustering with HW phenotype or the HWHtR phenotype was significantly higher than that with the non-HW or non-HWHtR phenotypes among children and adolescents(HW:OR=12.22,95%CI:9.54-15.67;HWHtR:OR=9.70,95%CI:6.93-13.58).Compared with the HW and HWHtR phenotypes,the association between risk of cardiometabolic health risk factors(CHRF)clustering and high WHR was much weaker and not significant(WHR:OR=1.14,95%CI:0.97-1.34).Conclusion Compared with HWHtR and WHR,the HW phenotype is a more convenient indicator with higher applicability to screen children and adolescents for cardiovascular risk factors.

关键词： Hypertriglyceridemic waist Waist-to-hip ratio Children and adolescents China Hypertriglyceridemic waist-to-height ratio Cardiovascular risk factors

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基于广义改进分解策略的多目标代理优化方法

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控制与决策 2024年第6期39卷 1829-1839页

作者：林成龙马义中肖甜丽南京理工大学经济管理学院南京210094

为解决多目标代理优化方法中代理模型选择单一问题,提出基于广义改进函数分解策略的多目标代理优化方法.该方法充分利用模型预测信息构建广义改进多目标分解准则和广义改进R2指标准则,有效拓展多目标代理优化中代理模型的选择空间.所提... 详细信息

为解决多目标代理优化方法中代理模型选择单一问题,提出基于广义改进函数分解策略的多目标代理优化方法.该方法充分利用模型预测信息构建广义改进多目标分解准则和广义改进R2指标准则,有效拓展多目标代理优化中代理模型的选择空间.所提两种准则通过随机均匀权重实现全局探索和局部搜索能力的自适应平衡.研究结果表明,所提方法在有限仿真条件下拥有良好的寻优性能,获得Pareto前沿在收敛性、多样性及空间分布性方面均具有一定优势.相比同类方法,该方法具有优势:(1)不需要模型预测不确定性信息,适用于基于不同种类代理模型的代理优化方法;(2)实现简单且计算复杂度低,能够有效提升昂贵黑箱问题优化效率.

关键词：昂贵多目标优化代理模型多目标代理优化方法广义改进多目标分解准则广义改进R2指标准则

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基于AHP-隶属函数法的棉花子叶期耐低钾能力鉴定

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作物学报 2024年第1期50卷 199-208页

作者：谭志新谢留伟李洪戈李芳军田晓莉李召虎中国农业大学农学院作物化控研究中心北京100193 中国农业科学院棉花研究所品种资源研究室河南安阳455000

挖掘和利用钾高效种质资源、提高钾营养利用效率是解决棉花生产中缺钾问题的重要途经,为建立快速可靠的耐低钾评价体系,应用决策评价模型AHP-隶属函数法在子叶期对384份棉花种质材料进行耐低钾评价。结果表明:缺钾条件下(0.03 mmol L^(... 详细信息

挖掘和利用钾高效种质资源、提高钾营养利用效率是解决棉花生产中缺钾问题的重要途经,为建立快速可靠的耐低钾评价体系,应用决策评价模型AHP-隶属函数法在子叶期对384份棉花种质材料进行耐低钾评价。结果表明:缺钾条件下(0.03 mmol L^(–1)),子叶缺钾斑相对面积的变异系数最大(96.24%),植株干重变异系数最小(14.73%),子叶与下胚轴夹角、根长、根表面积、根体积、K^(+)浓度、K~+积累量的变异系数在15.72%~31.52%之间。子叶与下胚轴夹角与缺钾斑相对面积显著负相关;根系形态与植株干重和K~+积累量显著正相关。经AHP-隶属函数法评价,384份棉花种质材料的综合评价值C分布于0.25~0.79之间,其中无极一枝花(C=0.7868)耐低钾能力最强,巴西014(C=0.2451)耐低钾能力最弱。系统聚类显示,高度(C值为0.74~0.79)和中度(C值为0.33~0.69)耐低钾材料的占比分别为1.30%和95.31%,低钾敏感材料(C值为0.25~0.33)占比3.39%。种子K~+浓度与子叶期耐低钾能力之间的相关性不显著。本研究完善了棉花耐低钾种质资源筛选体系,对384份供试种质的子叶期耐低钾能力进行了鉴定,筛选出5份耐低钾能力强的种质(无极一枝花、棕1-61、黑山棉1号、秦荔514、苏联棉78系),研究具有一定的理论和应用价值。

关键词：棉花子叶缺钾斑根系干重钾含量隶属函数

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基于分期播种试验夏玉米延迟收获促进子粒灌浆和粒重增益效应

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玉米科学 2024年第4期32卷 55-64,76页

作者：赵花荣任三学张玲田晓丽中国气象科学研究院北京100081 河北固城农业气象国家野外科学观测研究站河北保定072656 中国气象局/河南省农业气象保障与应用技术重点开放实验室郑州450003 甘肃省气象局信息与装备保障中心兰州730020

基于2019-2022年夏玉米播期试验资料,分析夏玉米生理成熟后延迟收获对子粒农艺性状改善、增产效应。结果表明,早播10 d至晚播20 d处理的有效灌浆结束日均比生理成熟期延后,子粒有效灌浆持续日数依次比其花后10 d至生理成熟期日数延长28~... 详细信息

基于2019-2022年夏玉米播期试验资料,分析夏玉米生理成熟后延迟收获对子粒农艺性状改善、增产效应。结果表明,早播10 d至晚播20 d处理的有效灌浆结束日均比生理成熟期延后,子粒有效灌浆持续日数依次比其花后10 d至生理成熟期日数延长28~9 d,播期每推迟10 d延长日数减少6.3 d。子粒农艺性状有明显的改善,百粒重、穗粒重提高,子粒增产效应明显,理论产量增产率16.95%~7.66%,增产量1960.36~681.51 kg/hm^(2),对照增产最多,比晚播10、20 d增产粮食多2.4~2.9倍。为华北地区提高气候资源利用效率和粮食生产提质增效提供参考。

关键词：夏玉米延迟收获子粒灌浆增产效率气候变化

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Non-dimensional analysis of static bifurcation in a natural circulation loop

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Nuclear Science and Techniques 2006年第1期17卷 61-64页

作者： TONG li-li li tian-Shu li xiao-Yan Department of Nuclear Science and System Engineering Shanghai Jiaotong University Shanghai 200030 China

The steady-state characteristics of a two-phase natural circulation loop were investigated based on the homogenous model. Transcendental equations of non-dimensional loop mass flow rate under various conditions were also derived. The static bifurcation diagram of a two-phase natural circulation described with non-dimensional vari-ables Npch-m + was obtained. In addition, various steady-state characteristics of a natural circulation loop were ana-lyzed and discussed. These characteristics include the existence of multiple solutions under certain conditions, and the maximum mass flow rate. The authors also examined the effects of important parameters such as sub-cooling number, riser-to-heated-region length ratio, and riser-to-heated-region diameter ratio.

关键词：静态分歧自然循环回路双相自然循环非空间分析

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黄曲条跳甲短链气味结合蛋白基因PstrOBP-sc分子和功能特点分析

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南方农业学报 2024年第8期55卷 2464-2472页

作者：田晓丽宋旭荣毛永娜李传仁张国辉长江大学生命科学学院湖北荆州434025 长江大学农学院/长江大学昆虫研究所湖北荆州434025 湖北省林业科学研究院荆州分院湖北荆州434020

【目的】分析黄曲条跳甲(Phyllotreta striolata)短链气味结合蛋白(Odorant binding protein,OBP)基因PstrOBP-sc分子和功能特点,为揭示昆虫短链OBP基因的功能提供参考。【方法】利用逆转录聚合酶链反应(RT-PCR)克隆黄曲条跳甲短链Class... 详细信息

【目的】分析黄曲条跳甲(Phyllotreta striolata)短链气味结合蛋白(Odorant binding protein,OBP)基因PstrOBP-sc分子和功能特点,为揭示昆虫短链OBP基因的功能提供参考。【方法】利用逆转录聚合酶链反应(RT-PCR)克隆黄曲条跳甲短链Classic OBP基因,并对其进行生物信息学分析;通过逆转录聚合酶链反应技术分析短链OBP基因在黄曲条跳甲雌、雄成虫不同组织中的表达情况;构建重组表达载体异源表达短链OBP基因,以聚丙烯酰胺凝胶电泳(SDS-PAGE)和蛋白质印迹法(Western blotting)验证目的蛋白;运用荧光结合试验检测短链OBP的配体结合能力。【结果】通过逆转录聚合酶链反应克隆验证,成功获得1条具有完整开放阅读框的黄曲条跳甲短链OBP基因PstrOBP-sc。PstrOBP-sc基因含有1个357 bp的开放阅读框,编码118个氨基酸残基,N末端具有1个由20个氨基酸残基组成的信号肽,成熟蛋白PSTROBP-SC仅由98个氨基酸残基组成,序列中含有6个保守的半胱氨酸,属于典型短链OBP基因。蛋白二级结构预测结果显示,PSTROBP-SC蛋白仅存在5个α-螺旋,且在第5个α-螺旋的下游仅有2个氨基酸残基。PstrOBP-sc基因组织表达模式及异源表达的PSTROBP-SC蛋白配体结合能力研究结果表明,PstrOBP-sc基因在黄曲条跳甲雌、雄成虫的所有供试组织中均有表达,而非特异性表达于嗅觉器官。同时,异源表达PSTROBP-SC不能结合荧光探针1-NPN。【结论】PstrOBP-sc基因的分子和功能特点不同于当前广泛研究的中长链OBP基因,其在生物体内很可能行使嗅觉以外的其他生理功能。

关键词：黄曲条跳甲短链气味结合蛋白分子特征组织表达模式荧光结合试验

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Intrinsic background radiation of LaBr3(Ce)detector via coincidence measurements and simulations

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Nuclear Science and Techniques 2020年第10期31卷 33-42页

作者： Hao Cheng Bao-Hua Sun li-Hua Zhu tian-xiao li Guang-Shuai li Cong-Bo li xiao-Guang Wu Yun Zheng School of Physics Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Big Data-Based Precision Medicine School of Medicine and EngineeringBeihang UniversityBeijing 100191China China Institute of Atomic Energy Beijing 102413China

The LaBr3(Ce)detector has attracted much attention in recent years because of its superior characteristics compared with other scintillating materials in terms of resolution and ***,it has a relatively high intrinsic background radiation because of the naturally occurring radioisotopes in lanthanum,actinium,and their daughter *** limits its applications in low-counting rate *** this study,we identified the radioactive isotopes in theφ3"x 3"Saint-Gobain B380 detector by a coincidence measurement using a Clover detector in a low-background shielding ***,we carried out a Geant4 simulation of the experimental spectra to evaluate the activities of the main internal radiation *** total activity of the background radiation of B380 is determined to be 1.523(34)Bq/cm^*** main sources include 138La at 1.428(34)Bq/cm^3,207Tl at 0.0135(13)Bq/cm^3,211Bi at 0.0136(15)Bq/cm^3,215Po at 0.0135(3)Bq/cm^3,219Rn at 0.0125(12)Bq/cm^3,223Fr at 0.0019(11)Bq/cm^3,223Ra at 0.0127(10)Bq/cm^3,227Th at 0.0158(22)Bq/cm^3,and 227Ac at 0.0135(13)Bq/cm^*** these,the activities of 207Tl,211Po,215Po,223Fr,and 227Ac are deduced for the first time from the secular equilibrium established in the decay chain of 227Ac.

关键词： LaBr3 Coincidence measurement technique Intrinsic radiation GEANT4 simulation

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数字经济下新商科交叉融合课程探索与实践——以“大数据营销”课程为例

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教育教学论坛 2024年第32期 73-77页

作者：陈佳田晓丽陈鑫白璇西南财经大学工商管理学院四川成都610030

在新文科背景下,文科和理科知识的融合成为数字经济发展中人才培养的重要一环。交叉融合课程作为适应数字经济发展的重要教学内容之一,是文科和理科知识融合的示范课程。新商科是新文科的重要组成部分,学生的数据分析思维是解决商业问... 详细信息

在新文科背景下,文科和理科知识的融合成为数字经济发展中人才培养的重要一环。交叉融合课程作为适应数字经济发展的重要教学内容之一,是文科和理科知识融合的示范课程。新商科是新文科的重要组成部分,学生的数据分析思维是解决商业问题的基础。以往的教学模式已无法满足新商科人才培养的要求,因此,关注交叉学科课程的教学模式改革是培养数字经济人才的关键环节。针对“大数据营销”交叉融合课程教学中存在的问题,以培养学生用数据思维分析和解决实际问题的能力为导向,从教学内容、教学方式、师资等方面进行了探讨,以期为交叉融合课程教学提供参考。

关键词：新商科交叉融合大数据营销

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NaCl-Induced Changes of Ion Fluxes in Roots of Transgenic Bacillus thuringiensis (Bt) Cotton (Gossypium hirsutum L.)

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Journal of Integrative Agriculture 2013年第3期12卷 436-444页

作者： li Mao-ying li Fang-jun YUE Yue-sen tian xiao-li li Zhao-hu DUAN liu-sheng State Key Laboratory of Plant Physiology and Biochemistry Ministry of Education/Engineering Research Center of Plant Growth Regulator Ministry of Education/College of Agronomy and Biotechnology China Agricultural University

Bacillus thuringiensis （Bt） cotton is grown worldwide, including in saline soils, but the effect of salinity on ion fluxes of Bt cotton remains unknown. Responses of two transgenic Bt cotton genotypes （SGK321 and 29317） and their corresponding receptors, Shiyuan 321 （SY321） and Jihe 321 （J321）, to 150 mmol L-1 NaCl stress were studied in a growth chamber. The root dry weight of SGK321 and 29317 under NaCl treatment was decreased by 30 and 31%, respectively. However, their corresponding receptor cultivars SY321 and J321 were less affected （19 and 24%, respectively）. The root length and surface area of the Bt cultivars were significantly decreased relative to their receptors under salt stress. NaCl treatment significantly increased CrylAc mRNA transcript levels in SGK321 and 29317 but did not affect Bt protein content in leaves or roots of either cultivar at 1 and 7 d after NaCl treatment. Fluxes of Na^＋, K^＋, and H^＋ in roots were investigated using the scanning ion-selective electrode technique. Both mean K^＋ efflux rate and transient K^＋ efflux of the Bt cultivars increased four-fold compared to their corresponding receptors when exposed to salinity stress. There were no significant differences in Na^＋ efflux between Bt and non-Bt cottons. Furthermore, the Na^＋ contents in roots and leaves of all genotypes dramatically increased under salt stress, whereas K^＋ contents decreased. Our results suggested that Bt cotton cultivars are more sensitive to salt stress than their receptor genotypes.

关键词： transgenic Bt cotton salinity stress toxin protein SIET K^+ flux

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Evaluation of Harvest Aid Chemicals for the Cotton-Winter Wheat Double Cropping System

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Journal of Integrative Agriculture 2013年第2期12卷 273-282页

作者： DU Ming-wei REN xiao-ming tian xiao-li DUAN liu-sheng ZHANG Ming-cai TAN Wei-ming li Zhao-hu State Key Laboratory of Plant Physiology and Biochemistry/Engineering Research Center of Plant Growth Regulator Ministry of Education/College of Agronomy and Biotechnology China Agricultural University

Timing of harvest is critical for mechanical picking in cotton production, especially in those regions with double cropping system. Appropriate and safe harvest aids will improve timing and facilitate harvest of cotton in the double cropping system. Three defoliants （dimethipin, thidiazuron, and thidiazuron-diuron） and one boll opener （ethephon） were included in this research. They were evaluated for their effects on defoliation, boll opening, seedcotton yield, seed quality, and fiber quality of field grown cotton when used alone or as a mixture in 2009 and 2010. Defoliation and/or boll opening were increased by all three defoliants and ethephon, especially by mixtures of a defoliant and ethephon. First harvest of seedcotton was significantly increased with defoliant-ethephon mixtures. No significant adverse effects were observed on boll weight, lint percentage, seed quality, and fiber properties. It was estimated that tank mixes of ethephon and one of the three defoliants can improve the adjusted gross revenue. Boll opening can be used as an alternative indicator for the adjusted gross revenue, because, it was linearly and positively correlated with the relative adjusted gross revenue and convenient in measurements. Wheat seedling growth was not affected by thidiazuron, whereas its seedling emergence, root dry weight, relative water content, and electrolyte leakage were adversely affected by dimethipin and thidiazuron- diuron when concentration was above 340 and 100 g （a.i.） ha-1, respectively. 90% defoliation and 80% boll opening were observed with the high rate of thidiazuron-ethephon mixture, but no adverse effects on winter wheat. The results suggested that tank mixes of ethephon with thidiazuron can be used effectively and safely in the cotton-winter wheat double cropping system to improve yield without adverse effects on seed quality and fiber quality.

关键词： cotton defoliation boll opening double cropping system

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