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Search Results: 1 - 10 of 119989 matches for " Zhenji Wang "
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Solvability of a second-order multi-point boundary-value problems at resonance on a half-line with dim ker L=2
Weihua Jiang,Bin Wang,Zhenji Wang
Electronic Journal of Differential Equations , 2011,
Abstract: We show the existence of solutions for a second-order multi-point boundary-value problem at resonance on a half-line, where the dimension of the kernel of the differential operator is 2. Our main tools are the coincidence degree theory due to Mawhin, suitable operators, and algebraic methods. Our results are illustrated with an example.
Characterizing semigroups by Q-fuzzy ideals
Caixia Li,Zhenji Tian
International Mathematical Forum , 2013,
Abstract: In this paper, we introduce the concept of Q-fuzzy left [right, twosided]ideal in semigroups. Moreover, the operations with Q-fuzzy setsand its related properties are discussed. Especially, we investigate therelationship between Q-fuzzy point and Q-fuzzy left [right] ideal. Finally,some theorems are given to characterize intra-regular semigroupsin terms of fuzzy semiprime Q-fuzzy [left, right] ideals.
Configuration Mode of Ornamental Plants in Norbulingka of Tibet and Application of Landscape Color  [PDF]
Wenbo Li, Zhen Xing, Zhenji Suolang, Jiangping Fang
Current Urban Studies (CUS) , 2018, DOI: 10.4236/cus.2018.62016
The application of plant landscape color has a great effect on the landscape of the scenic spot. By colorful foliage and ornamental plants with high color recognition, visitors can deepen their impressions, and thus increase the landscape aesthetic expectations and psychological recognition of the landscape sense. The plants in Norbulingka were taken as research object in this paper. Via field investigation and consulting a lot of data, color characters of ornamental plants from each genus and family were identified from the angle of plant characteristics of arbor, shrub and herb. CMYK color card value was used to collect color data of leaves, flowers and fruits from different plants, and quantitative analysis on color difference of leaves, flowers and fruits from ornamental plants was conducted, to obtain evaluation method and reasoning basis of plant color design in Norbulingka. The results showed that: 1) in color values of leaves, percentage of purple herb = red shrub; cyan herb > light green herb, dark green arbor > grass green arbor, yellow shrub > jade green shrub, bitter orange arbor < bottle green arbor; 2) in color values of flowers, percentage of bitter orange herb < blue shrub, cyan herb > light green herb, dark green arbor > grass green arbor, yellow shrub > jade green shrub, bitter orange arbor < bottle green arbor; 3) in color values of fruits, percentage of purple shrub > yellow shrub, yellow arbor > red arbor, blue herb = green arbor, red shrub < green shrub.
Reproductive strategy and impact on the fig-pollinator mutualism of one non-pollinating fig wasp species

Zhenji Wang,Fengping Zhang,Yanqiong Peng,Darong Yang,

生物多样性 , 2009,
Abstract: 为了解非传粉榕小蜂与榕树—传粉榕小蜂互利共生系统的作用方式和作用强度, 从而揭示它们长期稳定共存的原因, 作者于2008年在西双版纳热带植物园研究了钝叶榕(Ficus curtipes)非传粉榕小蜂Walkerella sp.与榕—蜂互利共生系统的相互关系。我们野外直接观察Walkerella sp.的产卵繁殖行为, 并对Walkerella sp.和传粉榕小蜂进行控制放蜂实验。实验包括4类处理榕果: 传粉榕小蜂单种放蜂果, Walkerella sp.单种放蜂果, Walkerella sp.与传粉榕小蜂混合放蜂果, 自然果。结果表明, Walkerella sp.在榕果外产卵, 并且可以将卵产在多个榕果上。单因素方差分析结果表明: 混合放蜂果和自然果内传粉榕小蜂后代数量差异不大(P = 0.46), 但都显著低于传粉榕小蜂单种放蜂果(P < 0.01); 在传粉榕小蜂单种放蜂果以及混合放蜂果内种子数量不存在显著差异(P = 0.33), 但都显著高于自然果(P < 0.01)。自然果内Walkerella sp.后代数量与传粉榕小蜂数量呈显著的相关关系, 而在混合放蜂果内两者呈低度负相关。Walkerella sp.与种子数量在自然果和混合放蜂果都不存在显著的相关关系。单因素方差分析结果表明, Walk-erella sp.单种放蜂果、混合放蜂果及自然果中Walkerella sp.数量不存在显著差异(P < 0.01)。对自然果内所有种类小蜂的相关分析表明: Walkerella sp.与其他非传粉榕小蜂都不存在显著的相关关系, 这说明不存在寄居或复寄生的非传粉榕小蜂种类控制Walkerella sp.的数量。而Walkerella sp.之所以没有完全利用榕果内的小花资源繁殖后代, 是由于产卵量有限和后代必须依靠传粉榕小蜂雄虫打开苞片口才能离开榕果, 必须给传粉小蜂留下一些繁殖资源。
Nitrogen removal of the secondary effluent by embedded immobilized bacteria in moving-bed

WANG Jingxuan,LI Jun,ZHANG Zhenji,ZHAO Baihang,LIU Weiyan,

环境科学学报 , 2013,
Abstract: 采用包埋固定化颗粒对北京市某污水处理厂的二沉池出水进行深度脱氮处理,研究了驯化启动及稳定运行的条件和脱氮特性,对比了不同水力停留时间(HRT)、不同进水TN负荷的脱氮效能.结果表明,在水温为25℃、pH=7.2、水力停留时间为70 min、包埋颗粒填充率为30%时,投加碳源驯化一周后包埋固定化颗粒即能保持稳定高效的脱氮率,并具有良好的耐冲击负荷能力;进水TN负荷从0.5 kg·m-3·d-1逐渐提高至2.0 kg·m-3·d-1时,TN平均去除率达到86.6%.进水TN负荷为2.5 kg·m-3·d-1时,TN平均去除率仍能达到70%;在HRT为20 min时,出水硝氮<1 mg·L-1,TN<5 mg·L-1;填充率由30%逐渐降低到20%时,TN去除率均能达到80%以上;填充率低于20%时,TN去除率随着填充率的减少而下降.试验确定包埋固定化菌的最佳填充率为20%.
Overall Construction of Well-to-do Society in China and Modernization of Traditional Chinese Medicine

Li Zhenji,

世界科学技术-中医药现代化 , 2003,
Abstract: The objectives of the struggle for the overall construction of a well -to -do society in China, which were fonnulated at the sixteenth congress of the Communist Party of China makes people clear about the historical tasks which should be fulfilled in the first 20 years of the present century. All the workers in the field of traditional Chinese medicine ( TCM) in the country should deeply understand the situation of social development in this historical stage, grasp the trends of muld-disciplinary fusion in the systems of modern science and technology and build up strong national pride and confidence, carrying forward and developing the concept of wholism and the methodology of the traditional Culture of China to form a thinking mode of fusion and reform so as to make creative contributions beyond those of our predecessors in the progress of the great rejuvenations of the Chinese nation and the modernization of TCM. The article analyzes and expounds the system of objectives of the construction of a well-to-do society and the modernization of TCM, and proposes that the contents of the TCM culture should be further promoted and developed in order to push ahead the modernization of TCM and provide the overall construction of a well-to-do society with spiritual motive force and material support in China.
Distribution and accumulation of heavy metals in A vicennia marina communi ty in Shenzhen,China
Lin Peng,Zheng Wenjian,Li Zhenji
环境科学学报(英文版) , 1997,
Abstract: This paper deals with the absorption,accumulation and distribution of several heavy metals in Avicennia marina community at Futian Nature Reserve in Shenzhen。China.The results showed that:(1)the contents of Cu,Ph,Zn,Cd,Cr,Ni and Mn in the topsoil(O---30cm in depth)were 38.3,28.7,11.4,0.136,7 97,25.0 and 537 μg/g respectively;(2)there were significant differences in the contents of heavy metals in different fractions of Avicennia marina,and the content ranges were 1.8—13.8 for Cu,0.4—3.51 for Pb;3.4—69.5 for Zn,0.013—0.295 for Cd,0.28—0.73 for Cr,0.43—7.65 for Ni and 25一1552 μg/g for Mn;(3)The enrichment coefficient (weighted mean) of the plants to topsoil was Cd>Mn>Zn>Cu>Ni=Cr>Pb;(4)the accumulation amounts of seven elements in standing biomass of this community were 53.70,19.27,187.89,0.72,6.06,20.76 and 1631.17 mg/m2 for Cu,Pb,Zn,Cd,Cr,Ni and Mn respectively.The net retention amount in the community(1993)were 4.06,1.32,16.36,1.43,107.98 rag/(m2.a)for Cu,Pb,Zn,Ni and Mn,60.21 and 431.8Oμg/(m2.a)for Cd and Cr respectively;(5)the potential amounts of the elements which existed in the residues of soil surface in the community were 2.09,1.96,5.05,1.54 and 405.54 mg/m2for Cu,Pb,Zn,Ni and Mn,and which of Cd and Cr were 19.30 and 78.00 μg/m2,respectively.
Network value and optimum analysis on the mode of networked marketing in TV media
Xiao Dongpo,Zhenji Zhang,Xiaolan Guan
Journal of Industrial Engineering and Management , 2012, DOI: 10.3926/jiem.615
Abstract: Purpose: With the development of the networked marketing in TV media, it is important to do the research on network value and optimum analysis in this field. Design/methodology/approach: According to the research on the mode of networked marketing in TV media and Correlation theory, the essence of media marketing is creating, spreading and transferring values. The Participants of marketing value activities are in network, and value activities proceed in networked form. Network capability is important to TV media marketing activities. Findings: This article raises the direction of research of analysis and optimization about network based on the mode of networked marketing in TV media by studying TV media marketing Development Mechanism , network analysis and network value structure.
Icariin on relaxation effect of corpus cavernosum smooth muscle
Zhongcheng Xin,Kim Euikyung,Zhenji Tian,Guiting Lin,Yinglu Guo
Chinese Science Bulletin , 2001, DOI: 10.1007/BF02900599
Abstract: NO-cGMP pathway in penile corpus cavernosal smooth muscle plays an important role in penile erection. The level of cGMP is regulated by a balance between the rate of synthesis by guanylate cyclase and the rate of hydrolytic breakdown to guanosine 5′ monophosphate (GMP) by phosphodiesterase 5(PDE5). Icariin is isolated from natural drug Epimedii herba, it is shown to have the relaxation effect on corpus cavernosal smooth muscle of rabbit (IC50: 4×10 4 mol/L), and the mechanism of the relaxation effect of Icariin on corpus cavernosum believed to have the inhibiting effect on PDE5 and activation of NO-cGMP pathway to enhancing penile erection.
Research advance in response of forest seedling regeneration to light environmental heterogeneity

CHEN Shengbin,SONG Aiqin,LI Zhenji,

应用生态学报 , 2005,
Abstract: Based on the analysis of characteristics of forest light environmental heterogeneity,this paper reviewed the research advance in the response of forest seedlings to light environmental heterogeneity from the aspects of photosynthesis,thermal dissipation,biomass accumulation and distribution,morphological traits,germination,and population dynamics,and discussed the ecological significance of different responses of seedling regeneration to light environmental heterogeneity in forest biodiversity maintenance,forest succession,and revegetation.Some suggestions for future research in this field were put forward.
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