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k-超图的直径

闽江学院学报 2013年第5期34卷 5-7,14页

作者：鄢仁政董哈微福建江夏学院数理教研部福建福州350108 闽江学院数学系福建福州350121

研究超图的直径,首先给出直径与拉普拉斯张量最大特征值的关系;其次给出直径与秩k的关系;最后给出直径为1的极小k-超图的边数的下界,并证明对任意的k,下界都是紧的.

关键词：超图直径张量特征值

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基于体感交互的暴食症医疗游戏设计

电脑知识与技术 2020年第19期16卷 230-231页

作者：魏陈昊吴子朝杭州电子科技大学人文艺术与数字媒体学院浙江杭州310018

游戏作为娱乐产业中的一种形式,除了丰富放松我们的生活,也可以一定程度上帮助我们更好地理解世界、传递价值。基于这一理念,在经过了调研后本文设计并实现了一款Kinect体感游戏帮助具有暴食倾向的人重新建立与食物的健康关系,舒缓暴食... 详细信息

游戏作为娱乐产业中的一种形式,除了丰富放松我们的生活,也可以一定程度上帮助我们更好地理解世界、传递价值。基于这一理念,在经过了调研后本文设计并实现了一款Kinect体感游戏帮助具有暴食倾向的人重新建立与食物的健康关系,舒缓暴食情绪。最后本文对具有暴食倾向的用户进行了可用测试,体验者认为该游戏方式可以一定程度上释放压力,缓解情绪。

关键词：体感交互游戏设计游戏开发娱乐暴食症

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穿山甲应用及炮制研究进展

中国现代中药 2015年第3期17卷 280-284页

作者：王妍张国民哈伟中国中药公司北京100195

穿山甲是传统中医临床用药的重要来源,是生态、经济、科研价值极高的陆生野生动物。甲片含有包括人体所必须氨基酸在内的16种氨基酸和18种微量元素,具有解毒、活血、止痛、消肿、生肌、益精髓等功效。现代药理表明甲片具有减低血液黏度... 详细信息

穿山甲是传统中医临床用药的重要来源,是生态、经济、科研价值极高的陆生野生动物。甲片含有包括人体所必须氨基酸在内的16种氨基酸和18种微量元素,具有解毒、活血、止痛、消肿、生肌、益精髓等功效。现代药理表明甲片具有减低血液黏度,延长凝血时间,升高白细胞,消肿排痈等药理作用。临床用于治疗妇科疾病、前列腺疾病、儿科疾病均有较好疗效。本文对甲片的炮制方法,穿山甲的养殖现状和资源保护等情况进行了讨论,为今后在合理利用、保护野生资源以及实现中药现代化等提供参考。

关键词：穿山甲化学成分药理活性炮制

C1QTNF5 is a novel attachment factor that facilitates the entry of influenza A virus

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Virologica Sinica 2024年第2期39卷 277-289页

作者： Lei Yu Xinjin Liu Xiaoqin wei Junrui Ren Xueyun Wang Shuwen Wu Ke Lan State Key Laboratory of Virology Medical Research InstituteCollege of Life SciencesWuhan UniversityWuhan430072China Frontier Science Center for Immunology and Metabolism Wuhan UniversityWuhan430072China Taikang Center for Life and Medical Sciences Wuhan UniversityWuhan430072China

Influenza A virus(IAV)binds sialic acid receptors on the cell surface to enter the host cells,which is the key step in initiating infection,transmission and *** the factors that contribute to the highly efficient entry of IAV into human cells will help elucidate the mechanism of viral entry and pathogenicity,and provide new targets for *** the present study,we reported a novel membrane protein,C1QTNF5,which binds to the hemagglutinin protein of IAV and promotes IAV infection in vitro and in *** found that the ha1 region of IAV hemagglutinin is critical for the interaction with C1QTNF5 protein,and C1QTNF5 interacts with hemagglutinin mainly through its N-terminus(1–103 aa).In addition,we further demonstrated that overexpression of C1QTNF5 promotes IAV entry,while blocking the interaction between C1QTNF5 and IAV hemagglutinin greatly inhibits viral ***,C1QTNF5 does not function as a receptor to mediate IAV infection in sialic acid-deficient CHO-Lec2 cells,but promotes IAV to attach to these cells,suggesting that C1QTNF5 is an important attachment factor for *** work reveals C1QTNF5 as a novel IAV attachment factor and provides a new perspective for antiviral strategies.

关键词： C1QTNF5 Influenza A virus Viral entry Hemagglutinin Attachment factor

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蒙药十八味欧曲丸中游离汞的含量测定

分析测试技术与仪器 2023年第3期29卷 286-291页

作者：马蕊丁玉竹哈伟师彦平中国科学院兰州化学物理研究所中国科学院西北特色植物资源化学重点实验室甘肃省天然药物重点实验室甘肃兰州730000

建立特色蒙药十八味欧曲丸中游离汞的含量测定方法,为十八味欧曲丸质量标准中游离汞的限量检测提供技术支撑.利用游离汞易溶于硝酸而炮制品不溶于硝酸的性质,以硝酸为溶剂提取,通过原子荧光光谱法对十八味欧曲丸中游离汞进行含量测定.汞... 详细信息

建立特色蒙药十八味欧曲丸中游离汞的含量测定方法,为十八味欧曲丸质量标准中游离汞的限量检测提供技术支撑.利用游离汞易溶于硝酸而炮制品不溶于硝酸的性质,以硝酸为溶剂提取,通过原子荧光光谱法对十八味欧曲丸中游离汞进行含量测定.汞在0.1~2.0µg/L范围内呈现良好的线性关系,回归方程为Y=1467.1976X+3.3915,相关系数R^(2)为0.99959,平均回收率为95.0%,相对标准偏差(RSD)为4.436%(n=6),测得十八味欧曲丸中游离汞的平均质量分数为0.671 mg/g.方法操作简单、结果准确可靠,可用作特色蒙药十八味欧曲丸质量标准提升研究中游离汞的限量测定.

关键词：十八味欧曲丸游离汞原子荧光光谱法含量测定限量检查

Grain yield and N uptake of maize in response to increased plant density under reduced water and nitrogen supply conditions

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Journal of Integrative Agriculture 2024年第1期23卷 122-140页

作者： Jingui wei Qiang Chai Wen Yin Hong Fan Yao Guo Falong Hu Zhilong Fan QimingWang State Key Laboratory of Aridland Crop Science Lanzhou 730070China College of Agronomy Gansu Agricultural UniversityLanzhou 730070China College of Life Sciences Northwest Normal UniversityLanzhou 730070China

The development of modern agriculture requires the reduction of water and chemical N fertilizer *** the planting density can maintain higher yields,but also consumes more of these restrictive ***,whether an increased maize density can compensate for the negative effects of reduced water and N supply on grain yield and N uptake in the arid irrigated areas remains *** study is part of a long-term positioning trial that started in 2016.A split-split plot field experiment of maize was implemented in the arid irrigated area of northwestern China in 2020 to *** treatments included two irrigation levels:local conventional irrigation reduced by 20%(W1,3,240 m^(3)ha^(-1))and local conventional irrigation(W2,4,050 m^(3)ha^(-1));two N application rates:local conventional N reduced by 25%(N1,270 kg ha^(-1))and local conventional N(360 kg ha^(-1));and three planting densities:local conventional density(D1,75,000 plants ha^(-1)),density increased by 30%(D2,97,500 plants ha-1),and density increased by 60%(D3,120,000 plants ha^(-1)).Our results showed that the grain yield and aboveground N accumulation of maize were lower under the reduced water and N inputs,but increasing the maize density by 30% can compensate for the reductions of grain yield and aboveground N accumulation caused by the reduced water and N *** water was reduced while the N application rate remained unchanged,increasing the planting density by 30% enhanced grain yield by 13.9% and aboveground N accumulation by 15.3%.Under reduced water and N inputs,increasing the maize density by 30% enhanced N uptake efficiency and N partial factor productivity,and it also compensated for the N harvest index and N metabolic related enzyme *** with W2N2D1,the N uptake efficiency and N partial factor productivity increased by 28.6 and 17.6%under W1N1D2.W1N2D2 had 8.4% higher N uptake efficiency and 13.9% higher N partial factor productivity than W2N2D1.W1N2D2 improv

关键词： water and N reduction plant density maize grain yield N uptake compensation effect

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体验式地质教学虚拟平台建设研究

中国地质教育 2007年第4期16卷 92-95页

作者：曹代勇郝伟应玺中国矿业大学资源与安全工程系北京100083

在分析了体验式教学特征的基础上,将该模式引入到地质教学中,可利用虚拟现实技术和多媒体技术建设体验式地质教学虚拟平台。本文基于"分层化模式"思路,提出了平台体系结构,并介绍了构建网络虚拟教学平台用到的JSP、Oracle10g、Virtools... 详细信息

在分析了体验式教学特征的基础上,将该模式引入到地质教学中,可利用虚拟现实技术和多媒体技术建设体验式地质教学虚拟平台。本文基于"分层化模式"思路,提出了平台体系结构,并介绍了构建网络虚拟教学平台用到的JSP、Oracle10g、Virtools等关键技术。建成后的平台能够将独立的、分散的教学、科研子系统集成起来,为用户提供了多源的教学服务。

关键词：体验式教学虚拟现实技术多媒体技术地质教学

Performance evaluation of the effect of humic acid on Anammox granular sludge:Apparent morphology,nitrogen removal and microbial community

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Journal of Environmental Sciences 2024年第10期144卷 148-158页

作者： Wenhui Huang Peiling Xu Xiang Li Yong Huang hao Sun wei Li Mao Zhang Miao Shi Yan Yuan School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Suzhou Hongyu Environmental Technology Company Limited by Shares Suzhou 215011China Suzhou Tianjun Environmental Technology Limited Company Suzhou 215011China Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou University of Science and TechnologySuzhou 215009China

Humic acid(ha)is a typical refractory organicmatter,so it is of great significance to investigate its effect on the performance of Anammox granular *** the dosage ofha≤50 mg/L,ha promotes the total nitrogen removal rate(NRR)to 1.45 kg/(m^(3)·day).When ha was between 50 and 100 mg/L,the NRR of Anammox was *** this time,the adsorption of ha causes the sludge to gradually turn fromred to brown,but the activities of heme and enzymes showed that its capacitywas not *** ha levels reached 250 mg/L,the NRR dropped to 0.11 kg/(m3·day).Moderate ha levels promoted the release of extracellular polymeric substance(EPS),but excessive ha levels lead to a decrease in EPS *** inhibited Anammox activity,which indirectly hindered the transmission of substrate and accumulated substrate *** ha promoted the increase of heterotrophicmicrobial abundance in Anammox system,the microbial diversity decreased *** the increase of ha concentration,the abundance of Candidatus_Brocadia,the main functional microorganism of Anammox system,decreased gradually,while the abundance of Candidatus_Kuenenia increased gradually.

关键词： Anammox Landfill leachate Humic acid Heme Microbial community Enzyme activity

Application of organic manure as a potential strategy to alleviate the limitation of microbial resources in soybean rhizospheric and bulk soils

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Journal of Integrative Agriculture 2024年第6期23卷 2065-2082页

作者： Zhimin Wu Xiaozeng han Xu Chen Xinchun Lu Jun Yan wei Wang Wenxiu Zou Lei Yan School of Resources and Environment Northeast Agricultural UniversityHarbin 150030China Key Laboratory of Mollisols Agroecology Northeast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081China Heilongjiang Academy of Agricultural Sciences Harbin 150086China

The development and vigor of soil microorganisms in terrestrial ecosystems are frequently constrained by the limited availability of essential elements such as carbon(C),nitrogen(N),and phosphorus(P).In this study,we investigated the impact of long-term application of varying levels of organic manure,low(7.5 Mg ha^(−1)yr^(−1)),moderate(15.0 Mg ha^(−1)yr^(−1)),and high(22.5 Mg ha^(−1)yr^(−1)),on the stoichiometry of enzymes and the structures of the microbial communities in soybean rhizospheric and bulk *** main goal of this research was to examine how soil microbial resource limitations in the rhizosphere respond to different long-term fertilization *** soil enzymatic activities were quantified,and the structure of the microbial community was assessed by analyzing phospholipid fatty acid *** compared to the bulk soil,the rhizospheric soil had significant increases in microbial biomass carbon(MBC),nitrogen(MBN),and phosphorus(MBP),with MBC increasing by 54.19 to 72.86%,MBN by 47.30 to 48.17%,and MBP by 17.37 to 208.47%.Compared with the unfertilized control(CK),the total microbial biomasses of the rhizospheric(increased by 22.80 to 90.82%)and bulk soils(increased by 10.57 to 60.54%)both exhibited increases with the application of organic manure,and the rhizospheric biomass was higher than that of bulk *** with bulk soil,the activities of C-,N-and P-acquiring enzymes of rhizospheric soil increased by 22.49,14.88,and 29.45%under high levels of organic manure,*** of vector length,vector angle,and scatter plots revealed that both rhizospheric and bulk soils exhibited limitations in terms of both carbon(C)and phosphorus(P)*** results of partial least-squares path modelling indicated that the rhizospheric soil exhibited a more pronounced response to the rate of manure application than the bulk *** varying reactions of rhizospheric and bulk soils to the extended application of organic manure underscore

关键词： enzymatic stoichiometry rhizosphere phospholipid fatty acids soybean organic manure