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基于自记忆方程的干旱区地下水水位动态模拟

节水灌溉 2016年第3期 58-60,64页

作者：魏光辉马亮新疆塔里木河流域管理局新疆库尔勒841000 新疆农业大学水利与土木工程学院乌鲁木齐830052

地下水水位预测对于合理开发利用地下水与保护生态环境具有重要意义。以新疆希尼尔水库周边区域为例,根据研究区多年地下水埋深观测数据,建立了基于自记忆方程的地下水埋深预测模型。结果表明:该模型模拟与预测精度较高,为研究区的地下... 详细信息

地下水水位预测对于合理开发利用地下水与保护生态环境具有重要意义。以新疆希尼尔水库周边区域为例,根据研究区多年地下水埋深观测数据,建立了基于自记忆方程的地下水埋深预测模型。结果表明:该模型模拟与预测精度较高,为研究区的地下水合理开发利用提供了重要参考;研究结果可用于其他类似时间序列变量的模拟预测。

关键词：地下水埋深希尼尔水库自记忆方程干旱地区

Neoproterozoic Crustal Reworking and Growth in the Zhangbaling uplift, Tan-Lu Fault Zone: Evidence from the Feidong Complex and Zhangbaling Group

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Acta Geologica Sinica(English Edition) 2020年第6期94卷 1921-1939页

作者： NIu Manlan CAI Qianru Wu Qi YuAN Xiaoyu SuN Yi LI Xiucai LI Chen ZHu guang LI Zhensheng ZHANG Shuai School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China

Intensive mid-Neoproterozoic magmatism is the salient feature of the Yangtze Block,preserving abundant information about crustal reworking and *** u-Pb-Lu-Hf isotope analysis was performed on material from the Feidong Complex(FDC)and Zhangbaling Group(ZBLG)of the Zhangbaling uplift,in order to determine the age and magmatic source of the Neoproterozoic igneous rocks as well as the detrital provenance for the sedimentary rocks,to further provide important data for understanding the mid-Neoproterozoic crustal evolution of the Northeast Yangtze *** amphibolite and gneissic granites in the Feidong Complex(FDC)gave similar protolith ages of 782-776 *** synmagmatic zircons exhibited variable negativeεHf(t)values of-26.9 ***(ca.2.4 Ga)to late Paleoproterozoic(ca.2.0-1.9 Ga)inherited zircons were found in the gneissic monzogranite,with negativeεHf(t)values of-11.2 to-7.2,indicating strong reworking of the ancient crustal materials of the Northeast Yangtze *** the amphibolites represent minor crustal growth through emplacement of continental rifting-related mafic *** quartz-keratophyres in the Xileng Formation of the ZBLG in contrast systematically yield young protolith crystallization ages of 754-727 Ma with highεHf(t)values of-2.0 to+5.6,indicating their derivation from the reworking of juvenile crustal *** detrital zircons from the metasiltstone in the Beijiangjun Formation yield variable^(206)Pb/^(238)u ages(871-644 Ma)with a peak age at 741±11 Ma andεHf(t)values of-4.3 to+5.3,which is consistent with those of the Xileng Formation,but distinct from the FDC,indicating that the provenance of the metasiltstone is primarily the underlying Xileng *** mid-Neoproterozoic igneous and sedimentary rocks of the Zhangbaling uplift were products from continental rifting zones along the northern margin of the Yangtze Block,situated in different positions from the Susong Complex and the Haizhou *** transition from a

关键词： zircon u-Pb age Lu-Hf isotope crustal reworking Neoproterozoic magmatism Zhangbaling uplift

Growth of metallic iron particles during reductive roasting of boron-bearing magnetite concentrate

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Journal of Central South university 2020年第5期27卷 1484-1494页

作者： ZHANG Xin LI guang-hui RAO Ming-jun MI Huan-peng LIANG Bin-jun YOu Jin-xiang PENG Zhi-wei JIANG Tao School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China

The growing characteristics of metallic iron particles during reductive roasting of boron-bearing magnetite concentrate under different conditions were *** size of the metallic iron particles was quantitatively measured via optical image analysis with consideration of size calibration and weighted ratio of image numbers in the core,middle and periphery zones of cross-section of *** order to guarantee the measurement accuracy,54 images were captured in total for each specimen,with a weighted ratio of 1:7:19 with respect to the core,middle and periphery section of the cross-section of *** reduction temperature and time is favorable to the growth of metallic iron *** on the modification of particle size measurement,in terms of time(t)and temperature(T)a predicting model of metallic iron particle size(D),was established as:D=125−0.112t−0.2352T−5.355×10^−4t^2+2.032×10^−4t∙T+1.134×10^−4T^2.

关键词： ludwigite ore reductive roasting metallic iron grain growth size measurement

不同构型氨基酸甜味与其量子化学参数的相关研究

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化学世界 2006年第2期47卷 74-77页

作者：吕仁庆邱广敏曹作刚刘晨光石油大学(华东)化学化工学院山东东营257061 石油大学(华东)石油工程学院山东东营257061

首次采用AM1半经验量子化学计算方法研究了10种D型和L型氨基酸的电子结构。使用Gaussian94软件包对所有结构进行了全优化和频率分析,得到了一系列的量子化学参数。研究结果表明,D型氨基酸的生成热、偶极矩、最低未占轨道能量、最高已占... 详细信息

首次采用AM1半经验量子化学计算方法研究了10种D型和L型氨基酸的电子结构。使用Gaussian94软件包对所有结构进行了全优化和频率分析,得到了一系列的量子化学参数。研究结果表明,D型氨基酸的生成热、偶极矩、最低未占轨道能量、最高已占轨道能量及前线轨道能隙值与其L型相比明显不同。D型氨基酸的生成热、偶极矩、最低未占轨道能量及前线轨道能隙值比其对应的L型氨基酸的增加可能增强了D型氨基酸与甜味蛋白质接受体的相互作用,从而表现出D型氨基酸比其相对应L型氨基酸甜味强的特性。

关键词：氨基酸甜味 AM1半经验方法量子化学参数

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槲皮素对小鼠移植宫颈癌的抑制作用

中南大学学报（医学版） 2007年第5期32卷 890-894页

作者：符慧群陶光实张隽李征中南大学湘雅三医院肿瘤科长沙410013 中南大学湘雅二医院妇科长沙410011 中南大学肿瘤研究所长沙410078

目的:探讨槲皮素对小鼠宫颈癌u14的抗癌作用及其可能机制。方法:建立615近交系小鼠u14移植瘤动物模型,并随机分成4组:对照组、低剂量干预组[1.5g/(kg·d)]、中剂量干预组[3.0g/(kg·d)]及高剂量干预组[6.0g/(kg·d)],腹腔注射给药,连续... 详细信息

目的:探讨槲皮素对小鼠宫颈癌u14的抗癌作用及其可能机制。方法:建立615近交系小鼠u14移植瘤动物模型,并随机分成4组:对照组、低剂量干预组[1.5g/(kg·d)]、中剂量干预组[3.0g/(kg·d)]及高剂量干预组[6.0g/(kg·d)],腹腔注射给药,连续用药20d,于接种后26d处死各组小鼠,检测各组小鼠的瘤体平均质量并计算抑瘤率,采用免疫组织化学半定量检测肿瘤组织微血管密度(MVD)及核因子-κB(NF-κB)表达水平,用原位TdT检测法(TuNEL)检测肿瘤细胞凋亡指数(AI)。结果:高剂量干预组肿瘤的生长明显受到抑制,肿瘤体积和瘤质量均明显低于对照组(P1),其抑瘤率显著高于低、中剂量干预组(P1);高剂量干预组MVD及NF-κB表达水平明显降低,AI则明显升高,与对照组比较,差异均有统计学意义(P1),但低、中剂量槲皮素对MVD,NF-κB表达及AI无明显影响(P>0.05)。结论:槲皮素对小鼠宫颈癌的生长具有显著的抑制作用,其抗癌机制可能与抑制微血管生成和促进细胞凋亡有关。

关键词：槲皮素宫颈癌u14 核因子-κB 凋亡

Acupuncture price in forty-one metropolitan regions in the united States: An out-of-pocket cost analysis based on Ok ***

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Journal of Integrative Medicine 2019年第5期17卷 315-320页

作者： Arthur Yin Fan David Dehui Wang hui Ouyang Haihe Tian hui Wei Deguang He Changzhen Gong Jipu Wen Ming Jin Chong He Sarah Faggert Alemi Sudaba Rahimi Acupuncture Profession Survey Project American Traditional Chinese Medicine AssociationViennaVA 22182USA Tongrentang Ming Qi Clinic New YorkNY 10016USA Oriental Asclepius LLCPlantationFL 33317USA Eastern Roots Wellness PLCMcLeanVA 22101USA McLean Center for Complementary and Alternative Medicine PIC.ViennaVA 22182USA Ohio State Integrative Medicine Wexner Medical CenterOhio State UniversityColumbusOH 43221USA YIN & YANG Healthcare FriendswoodTX 77546USA Chinese Acupuncture and Herbs Center LargoFI 33778USA Wei's Chinese Medical Center Lake WorthFL 33467USA New England School of Acupuncture NewtonMA 02458USA American Academy of Acupuncture Oriental Medicine RosevilleMN 55113USA TCMzone TempeAZ 85281USA

Few studies have focused on the cost of acupuncture treatments although acupuncture has become popular in the united States(u.S.). The purpose of the current study was to examine the out-of-pocket costs incurred from acupuncture services based on an online website, Ok ***. We examined descriptive statistics(range, median and 20% intervals) for the cost of acupuncture "first-time visits"and "follow-up visits" in 41 metropolitan regions in the u.S. The acupuncture prices of 723 clinics throughout 39 metropolitan regions were included, except for Birmingham, Alabama and Detroit, Michigan as there was no online data available at the time of the study for these two regions. The cost range for a first-time acupuncture visit was $15–400;the highest median was $150 in Charleston, South Carolina,while the lowest was $45 in St. Louis, Missouri. The top 10 cities for the highest median were:Baltimore, Washington, D.C., New York, San Francisco, San Jose, Boston, Atlanta, Seattle, Portland and Indianapolis, with the median $120, while the median for all 723 clinics was $112. For the follow-up visits,the cost range was $15–300;the highest median was $108 in Charleston, South Carolina, and the lowest$40 in Miami, Florida. The 10 cities with highest median follow-up acupuncture visit costs were: New York, Baltimore, New Orleans, Washington, D.C., Philadelphia, San Francisco, San Jose, Seattle, Boston and Atlanta, with the median $85, while for all 723 clinics the median price was $80. The estimation of the average gross annual income of each acupuncturist from the regions studied was $95,760, while the total annual cost of patients seeking acupuncture services in the u.S. was about $3.5 billion in 2018.

关键词： Acupuncture Price Out-of-pocket cost Annual cost City, united States

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DE算法在空间交会中的应用

上海航天 2007年第3期24卷 46-49页

作者：戴光明李晖中国地质大学(武汉)计算机学院湖北武汉430074

在第一次脉冲位置可变的条件下,用差异演化(DE)算法实现航天器双冲量交会的优化。根据C-W方程建立双冲量交会模型,用时间-能量加权法计算混合优化指标。给出了所设计DE优化算法的编码、生成初始种群、变异、交叉、辅助和选择等操作步骤... 详细信息

在第一次脉冲位置可变的条件下,用差异演化(DE)算法实现航天器双冲量交会的优化。根据C-W方程建立双冲量交会模型,用时间-能量加权法计算混合优化指标。给出了所设计DE优化算法的编码、生成初始种群、变异、交叉、辅助和选择等操作步骤。仿真结果表明,DE算法较基本遗传算法(GA)能更有效地获得最优解。

关键词：空间交会双冲量差异演化算法优化

Core collection construction of tea plant germplasm in Anhui Province based on genetic diversity analysis using simple sequence repeat markers

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农业科学学报:英文版 2023年第9期22卷 2719-2728页

作者： TAO Ling-ling TING Yu-jie CHEN Hong-rong WEN hui-lin XIE hui LuO Ling-yao HuANG Ke-lin ZHu Jun-yan LIu Sheng-rui WEI Chao-ling State Key Laboratory of Tea Plant Biology and utilization/Key Laboratory of Tea Biology and Tea Processing of Ministry of Agriculture and Rural Affairs/Anhui Provincial Laboratory of Tea Plant Biology and utilization Anhui Agricultural UniversityHefei 230036P.R.China

The tea plant[Camellia sinensis(L.)***]is an industrial crop in *** Anhui Province has a long history of tea cultivation and has a large resource of tea germplasm with abundant genetic *** reduce the cost of conservation and utilization of germplasm resources,a core collection needs to be *** this end,573 representative tea accessions were collected from six major tea-producing areas in Anhui *** on 60 pairs of simple sequence repeat(SSR)markers,phylogenetic relationships,population structure and principal coordinate analysis(PCoA)were *** analysis indicated that the 573 tea individuals clustered into five groups were related to geographical location and were consistent with the results of the ***,we constructed a core collection consisting of 115 tea individuals,accounting for 20%of the whole *** 115 core collections were considered to have a 90.9%retention rate for the observed number of alleles(Na),and Shannon’s information index(I)of the core and whole collections were highly *** these,39 individuals were preserved in the Huangshan area,accounting for 33.9%of the core collection,while only 10 individuals were reserved in the Jinzhai County,accounting for 8.9%of the core *** of the accessions in the tea plant core collection exhibited a pattern nearly identical to that of the accessions in the entire collection,further supporting the broad representation of the core germplasm in Anhui *** results demonstrated that the core collection could represent the genetic diversity of the original *** present work is valuable for the high-efficiency conservation and utilization of tea plant germplasms in Anhui Province.

关键词： tea plant core collection genetic diversity SSR markers

45CrNiSiMnMoVA钢钻削轴向力加工参数优化及响应面法预测

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机械设计与制造 2023年第12期394卷 93-96页

作者：贾广辉常浩张昊河南交通职业技术学院汽车学院河南郑州450000 东风越野车有限公司整车开发部湖北武汉430056 东南大学仪器科学与工程学院江苏南京210096

为评价国产45CrNiSiMnMoVA钢的钻削加工性能,选择钻削轴向力评价刀具磨损程度及其表面质量影响因素,针对各参数形成的主效应和交互效应分别构建了相应的回归分析模型。实验研究结果表明:主轴转速增大使得进入平稳区时轴向力减小,获得更... 详细信息

为评价国产45CrNiSiMnMoVA钢的钻削加工性能,选择钻削轴向力评价刀具磨损程度及其表面质量影响因素,针对各参数形成的主效应和交互效应分别构建了相应的回归分析模型。实验研究结果表明:主轴转速增大使得进入平稳区时轴向力减小,获得更小摩擦系数并引起轴向力降低。逐渐提高进给量时,轴向力持续增大,进给速度25mm/min确保达到较小切削力,从而实现加工效率的显著提升。轴向力与步进量之间并不存在直接关联性。通过二次多项式对模型实施预测,显著性检验结果接近1,表明此模型具备优异拟合性能。预测结果相对验证结果获得了较小的相对误差,轴向力的误差在5N以内,去除率的误差在2mm^(2)·min^(-1)以内,表明本预测模型能够满足可靠性要求。

关键词：钻削轴向力 45CrNiSiMnMoVA钢响应面法参数优化预测模型