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A Relation in the Stable Homotopy Groups of Spheres

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Chinese Annals of Mathematics,Series B 2015年第3期36卷 413-426页

作者： Jianxia BAI jianguo hong Ren’ai College of Tianjin University School of Mathematical Science Nankai University

Let p ≥ 7 be an odd prime. Based on the Toda bracket 〈α1β1^p-1, α1β1,p, γs〉, the authors show that the relation α1β1^P-1h2,0γs= βp/p-1γ/s holds. As a resulL they can obtain α1β1^ph2,0γs= 0 ∈ π＊（S^0） for 2 ≤ s ≤ p - 2, even though α1h2,0γs and β1α1h2,0γs are not trivial. They also prove that β1^p-1 α1h2,0γ3 is nontrivial in π＊（S^0） and conjecture β1^p-1 α1h2,0γs is nontrivial in π＊（S^0） for 3 ≤s ≤ p - 2. Moreover, it is known that βp/p-1γ3 = 0 ∈ EXtBP＊Bp^5,＊（BP＊, BP＊）, but βp/p-1γ3 is nontrivial in π＊（S^0） and represents the element β1^p-1α1h2,0γ3.

关键词： Toda bracket Stable homotopy groups of spheres Adams-Novikovspectral sequence Method of infinite descent

Four Families of Nontrivial Product Elements in the Stable Homotopy Groups of Spheres

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Chinese Annals of Mathematics,Series B 2022年第3期43卷 459-472页

作者： Linan Zhong jianguo hong Hao ZHAO Department of Mathematics Yanbian UniversityYanji 133002JilinChina Sino-European Institute of Aviation Engineering Civil Aviation University of ChinaTianjin 300300China School of Mathematical Sciences South China Normal UniversityGuangzhou 510631China

In this paper,the authors introduce a new effective method to compute the generators of the E-term of the May spectral *** helps them to obtain four families of non-trivial product elements in the stable homotopy grou... 详细信息

关键词： Stable homotopy groups of spheres Adams spectral sequence May spectral sequence

On a family involving R.L. Cohen's ζ-element(II)

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Science China Mathematics 2015年第8期58卷 1745-1752页

作者： hong jianguo LIU XiuGui ZHENG Da School of Mathematical Sciences and LPMC Nankai University

In 1981, Cohen constructed an infinite family of homotopy elements ζk∈ π＊（S） represented by h0bk ∈ ExtA3,2（p-1）（pk＋1＋1）（z/p,Z/p） in the Adams spectral sequence, where p 〉 2 and k ≥ 1. In this paper, we make use of the Adams spectral sequence and the May spectral sequence to prove that the composite map ζn-1β2γs＋3 is nontrivial in the stable homotopy groups of spheres πt（s,n）-s-8（S）, where p ≥7, n 〉 3, 0≤s 〈p-5 andt（s,n） =2（p-1）[pn＋（s＋3）p2＋（s＋4）p＋（s＋3）]＋s.

关键词： stable homotopy groups of spheres Adams spectral sequence May spectral sequence

Microstructure Analysis of Used Silica Brick in Coke Oven of Meisteel

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China's Refractories 2013年第1期22卷 21-26页

作者： LIU Qiang hong jianguo ZHOU Ningsheng Baoshan Iron & Steel Co. Ltd. High Temperature Materials Institute Henan University of Science and Technology

Microstructure analysis shows quartz remains more or less in used silica brick for coking chamber of coke oven, and quartz gradually becomes metastable cristobalite and then translates into tridymite in used brick for high temperature combustion chamber. Phase change of silica brick only limits to transformation of quartz and metastahie cristobalite. When finished, structure of silica brick tends to stable. Carbon sedimentates and graphitize. helping to protect the silica brick and improve heat conductivity of silica brick for coking chamber.

关键词： coke oven silica brick microstructure quartz

The secondary periodic element βp2/p2-1 and its applications

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Science China Mathematics 2024年

作者： jianguo hong Xiangjun Wang Yu Zhang Science College Shijiazhuang University School of Mathematical Sciences Nankai University Center for Applied Mathematics Tianjin University

Let p≥7 be a *** prove that βp2/p2-1survives to E∞in the Adams-Novikov spectral ***,using the Thom map Φ:ExtBP*BP*,*（BP*,BP*）→ExtA*,*（Z/p,Z/p）,we can see that h0h3also survives to E∞in the classical Adams sp...

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Bio-Mobilization of Potassium from Clay Minerals: I. By Ectomycorrhizas

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Pedosphere 2000年第4期10卷 339-346页

作者： YUAN LING, FANG DEHUA, WANG ZHIHUI, SHUN hong and HUANG jianguo (College of Resources and Environment, Southwest Agricultural University, Chongqing 400716 China) 西南农业大学重庆 400716

A pot experiment was carried out to investigate effect of ectomycorrhizal fungi on eucalyptus growth and K bio-mobilization from soils and clay minerals. In the experiment, sands mixed with soil, KCI-saturated vermiculate and mica, respectively, were used to nurse eucalyptus seedlings which were nonectomycorrhized or ectomycorrhized by an ectomycorrhizal fungus Pisolithus tinctorius strain XCI (Pt XC1) isolated from a forest soil from Xichang, Sichuan Province, China, and a worldwide well-known ectomycorrhizal fungus Pisolithus tinctorius strain 2144 (Pt 2144) obtained in Australia. More depletion of HCl-soluble K by mycorrhizas from the soil and minerals than nonmycorrhizas suggested that mycorrhizas had a great ability to mobilize K present in the interlayer and feldspar. Mycorrhizal seedlings depressed greatly K digested with HF-HCIO4 from substrates after consecutive extractions of soils and minerals by water, ammonium cetate and boiling HCl, while nonmycorrhizal seedlings reduced it little if any, showing that the mycorrhizal seedlings could mobilize and then utilize the structural K in mineral lattice. Ectomycorrhizal fungi played a very important role not only in promoting the growth of eucalyptus seedlings but also in mobilizing K in soils and minerals. The infection of Pt XC1 led to a better growth of eucalyptus seedlings and more K accumulation in the seedlings than that of Pt 2144. The large differences in K accumulation by the seedlings might be due to different abilities of the two ectomycorrhizal fungi to mobilize K in interlayer and lattice pools in the clay minerals.

关键词： clay minerals ectomycorrhizas eucalyptus K mobilization

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重视儿童喘息的病因分析和早期干预

中华儿科杂志 2023年第4期61卷 289-291页

作者：洪建国上海交通大学医学院附属第一人民医院儿内科上海200080

喘息是6岁以下儿童常见的呼吸道症状,导致儿童喘息原因多样,年龄越小喘息的病因越复杂,要重视儿童喘息的病因分析,以免延误诊断。早期采用抗炎为主的干预措施有益于气道炎症相关性喘息症状的改善,但需及时评估干预效应,避免过度用药。

关键词：喘息症状气道炎症儿童喘息过度用药延误诊断干预措施病因分析呼吸道症状

Bio-Mobilization of Potassium from Clay Minerals: Ⅱ. By Ectomycorrhizal Fungi

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Pedosphere 2000年第4期10卷 347-354页

作者： YUAN LING, WANG ZHIHUI, FANG DEHUA, SHUN hong and HUANG jianguo (College of Resources and Environment, Southwest Agricultural University, Chongqing 400716 China)

Ectomycorrhizal fungi, including Cenococcum geophilum SIV (Cg SIV), and Pisolithus tinctorius 2144 (Pt 2144), 441 (Pt 441) and XC1 (Pt XC1), were cultured in Pachlewski liquid medium with H2KPO4,KCl- saturated vermiculite and mica as K sources, respectively, to investigate the mechanism of K absorption and mobilization by the fungi. Fungal growth rate, K absorption and mobilization varied significantly among the fungal species. Faster growth and greater K accumulation in Pt XC1 than Pt 2 144, Pt 441 and Cg siv were observed. Ectomycorrhizal fungi depressed HCl-soluble K in minerals after successive extractions by water and NH4OAc. Ratio of the total amount of K, including water-, NH4OAc- and HCI-soluble K, lost from substrates to the K accumulated in fungal colonies was less than 60%. These reveal that the ectomycorrhizal fungi could utilize K in interlayer and structural pools, which are usually unavailable for plants in short period. Large differences in the depletion of K in interlayer and structural pools by fungi were observed at fungal harvest. Taking into account the nutrient absorption by ectomycorrhizal fungi in symbionts and the direct contact between hyphae and soils, the fungi species colonized on the root surfaces seemed to be related to the effectiveness of mycorrhizas to utilize K in soils. Ectomycorrhizal fungi differed in the efflux of protons and oxalate. Pt XC1 was observed to have greatest ability to effuse protons and oxalate among the fungi adopted in the experiment. Furthermore, the higher the concentrations of protons and oxalate in the liquid culture solutions, the larger the depletion of K in interlayer and structural pools in minerals by fungi. Protons could replace interlayer K and chelation of oxalate with Fe and Al in crystal lattice could cause weathering of clay minerals. So, protons and oxalate produced by ectomycorrhizal fungi might play an important role in K mobilization in these two pools.

关键词： ectomycorrhizal fungi K proton and oxalate

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中国儿童支气管哮喘防治指南修订要点的探讨

临床儿科杂志 2014年第2期32卷 101-103页

作者：洪建国上海交通大学附属第一人民医院儿内科上海200080

发表于2008年的《儿童支气管哮喘诊断与防治指南》为我国儿童哮喘管理水平的提高起到了积极的促进作用。近年来随着对疾病认识的深入,儿童哮喘的诊治技术又有了新的进展,有必要对现有指南进行适当修订,以更好地指导临床实践。文章对儿... 详细信息

发表于2008年的《儿童支气管哮喘诊断与防治指南》为我国儿童哮喘管理水平的提高起到了积极的促进作用。近年来随着对疾病认识的深入,儿童哮喘的诊治技术又有了新的进展,有必要对现有指南进行适当修订,以更好地指导临床实践。文章对儿童哮喘指南修订的要点提出一些探索性的看法,内容主要涉及疾病的诊断、监测、评估和治疗。

关键词：哮喘指南儿童