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Search Results: 1 - 10 of 27605 matches for " Hu Qinhai "
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Finite $p$-groups with a minimal non-abelian subgroup of index $p$ (IV)
Lijian An,Ruifang Hu,Qinhai Zhang
Mathematics , 2013, DOI: 10.1142/s0219498814500327
Abstract: In this paper, we completely classify the finite $p$-groups $G$ such that $\Phi(G')G_3\le C_p^2$, $\Phi(G')G_3\le Z(G)$ and $G/\Phi(G')G_3$ is minimal non-abelian. This paper is a part of the classification of finite $p$-groups with a minimal non-abelian subgroup of index $p$. Together with other four papers, we solve a problem proposed by Y. Berkovich.
EFFECTS OF LANTHANUM ON PHYSIOLOGY AND CHLOROPLAST ULTRASTRUCTURE OF CERATOPHYLLUM DEMERSUM
稀土元素镧对金鱼藻生长生理及细胞叶绿体结构的影响

Hu Qinhai,Ye Chang,Ye Zhaojie,
胡勤海
,叶畅,叶兆杰

环境科学学报 , 1997,
Abstract: 研究了稀土元素镧对金鱼藻叶绿素总量、抗坏血酸氧化酶、过氧化氢酶、过氧化物酶等代谢指标和细胞叶绿体亚显微结构的影响,以及金鱼藻对镧的吸收积累作用,结果表明,短期内低浓度(2-110mg/L)的镧对金鱼藻生长有一定刺激促进作用,但随处理时间的延长及处理浓度的提高,抑制作用明显增强,并破坏细胞叶绿体结构;金鱼藻对镧有较强的吸收积累能力。
Effects of Rare-Earth Elements on Growth and Reproduction of Chlorella pyrenoides
稀土元素对小球藻生长的影响

Hu Qinhai,
胡勤海
,管丽莉,叶兆杰

环境科学 , 1996,
Abstract: It was studied that effects of rare-earth elements (La,Ce, Pr, Nd and their mixture) on growth and reproduction of Chlorella pyrenoides. The results showed that effects of rare-earth elements on growth and reproduction of Chlorella pyrenoides were not apparent under lower concentration (2mg/L), but it was inhibited as the concentration increased; and the toxicity (EC50,96 h.) of rareearth elements on Chlorella pyreaoides was insequence as:Nd>Ce>Pr>La>mixture of them, but little difference.
On Finite Metahamiltonian p-Groups
Lijian An,Qinhai Zhang
Mathematics , 2014,
Abstract: A group is called metahamiltonian if all non-abelian subgroups of it are normal. This concept is a natural generalization of Hamiltonian groups. In this paper, the properties of finite metahamiltonian $p$-groups are investigated.
Study on basic features of sludge coal water slurry
污泥水煤浆的基础特性研究

Hu Qinhai,Li Xi,Chen Jufen,Meng Yuanyuan,Zhu Jianhang,Song Xuefei,
胡勤海
,李霞,陈菊芬,孟媛媛,朱建航,宋雪斐

环境工程学报 , 2011,
Abstract: 通过与纯水煤浆的对比实验,分析了污泥添加量对水煤浆流变性、稳定性及燃烧等基础特性的影响。结果表明,在污泥添加比例为5%~10%,分散剂用量为0.6%~1.2%,稳定剂用量为0.1%的情况下,可以得到流变性和稳定性良好的污泥水煤浆。随着水煤浆中污泥添加比例的提高,着火温度Ti降低,燃尽温度提前,燃烧特性变好。管式炉中燃烧实验表明,试样中硫析出率随温度的升高而增大,而污泥水煤浆比纯水煤浆具有更好的固硫效果。
Slurry ability of coal water slurry prepared with two kinds of sewage sludge
两种城市污泥掺混水煤浆的成浆性

WANG Dan,MENG Yuanyuan,HU Qinhai,ZHU Miaojun,WU Lili,LUO Yanzhang,
王丹
,孟媛媛,胡勤海,朱妙军,武丽丽,罗彦章

环境科学学报 , 2009,
Abstract: The feasibility of preparation of sludge coal water slurry (S-CWS) with pulverized coal and sewage sludge with high moisture content was studied. Various factors related to the formation of the slurry,such as the ratio of sludge combination,ratio of dispersant,temperature,and stirring time,were investigated. Based on the data,when the ratio of NDF dispersant was below 10%,it was feasible to prepare S-CWS with sludge and pulverized coal. The apparent viscosity of the two kinds of S-CWS with sludge ratios of ...
Study on combustion kinetics of coal water slurry prepared with sewage sludge
市污泥掺制水煤浆燃烧动力学特性

HU Qinhai,XIONG Yunlong,ZHU Miaojun,YU Wei,WANG Dan,WU Lili,DAI Wenhua,
胡勤海
,熊云龙,朱妙军,余伟,王丹,武丽丽,戴文华

环境科学学报 , 2008,
Abstract: 通过热重实验,分析了污泥、水煤浆的单-燃烧以及水煤浆中掺混不同比例城市污泥后混合浆的燃烧特性.结果表明.混合浆样的热分析曲线出现2个由挥发分析出的燃烧峰(分别对应250~380°C和380~570°C)与固定碳燃烧峰(570~680°C).混合浆样着火温度因污泥的掺人比水煤浆高约50℃,但随掺混比例的提高,最大燃烧速率及综合燃烧特性指数S增加,污泥的掺入使燃烧得到加强.采用积分法(Coats-Redfern方程)计算得到各阶段燃烧反应的机理方程及相应的动力学参数活化能E,表明活化能值的大小与试样的燃烧阶段是对应的.
Finite $p$-groups all of whose subgroups of index $p^3$ are abelian
Qinhai Zhang,Libo Zhao,Miaomiao Li,Yiqun Shen
Mathematics , 2014,
Abstract: Suppose that $G$ is a finite $p$-group. If all subgroups of index $p^t$ of $G$ are abelian and at least one subgroup of index $p^{t-1}$ of $G$ is not abelian, then $G$ is called an $\mathcal{A}_t$-group. In this paper, some information about $\mathcal{A}_t$-groups are obtained and $\mathcal{A}_3$-groups are completely classified. This solves an {\it old problem} proposed by Berkovich and Janko in their book. Abundant information about $\mathcal{A}_3$-groups are given.
ON THE NORMALITY OF DIRECTED CAYLEY GRAPHS OF ABELIAN GROUPS
关于交换群上的Cayley有向图的正规性

Xu Mingyao,Zhang Qinhai,Zhou Jinxin,
徐明曜
,张勤海,周进鑫

系统科学与数学 , 2005,
Abstract: A direced Cayley graph $X=\cay(G, S)$ is called normal for $G$ if the right representation $R(G)$ of $G$ is normal in the full automorphism group $\Aut (X)$. In this paper, we determine all non-normal directed Cayley graphs of finite abelian groups with valencies 2 and 3. Using the result, we give a complete classification of connected directed arc-transitive graphs of order $p^n$ ($n\leq 2, p$ an odd prime) with valency at most 3.
一线员工应对顾客不当行为的能力对同属顾客的影响研究
The Impact of Frontline Service Employee’s Capability to Deal with Customer Misbehavior on Fellow Customer

刘汝萍,范广伟,马钦海
LIU Ruping
,FAN Guangwei,MA Qinhai

- , 2018,
Abstract: 摘要 从一线员工、实施不当行为顾客和同属顾客三者互动角度出发,考察一线员工应对顾客不当行为的能力对同属顾客的感知服务质量与忠诚的影响,并检验同属顾客感知道义公平的中介作用以及顾客不当行为类型的调节作用。采用问卷调查法,通过问卷星网络平台收集数据。研究结果表明,一线员工应对顾客不当行为的能力正向影响同属顾客感知服务质量和忠诚,道义公平的中介作用显著;顾客不当行为类型的调节作用显著,当顾客不当行为的作用对象是同属顾客时,员工应对能力对道义公平的影响更强
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