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18篇 您的检索式:作者名="Daiping"
    题名 作者 年代 出处 被引量
1Solution to new word perplexity in immersion bilingual teaching of engineering graphics显示文摘Numerous and specialized words are main obstacles in immersion bilingual teaching of engineering graphics.A feasible solution to this problem is given by classifying new words into three categories.The fear of new words among students is overcome and the effect of bilingual teaching is greatly improved.YANG Yong FAN Ning BAI Daiping 2012Computer Aided Drafting,Design and Manufacturing2012,22,2:2
2A Kinetic Study of Selective Hydrogenation of Carbon Monoxide to C_2 Oxygenates on Rh-Mn-Li-Fe/SiO_2 Catalyst显示文摘The kinetics of CO hydrogenation for the synthesis of C2 oxygenates over Rh-Mn-Li-Fe/SiO2was investigated. Kinetic parameters for the formation of ethanol, acetaldehyde, C2 oxygenates, methanol and methane were obtained. The activation energy, H2 and CO dependence orders for ethanol and acetaldehyde formation differed greatly, the large difference seemed to imply that they were formed through different intermediates.Hongmei Yin, Yunjie Ding, Hongyuan Luo, Daiping He, Weimiao Chen, Zhiyong Ao, Liwu LinNatural Gas Utilization and Applied Catalysis Laboratory, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, China 2003Journal of Natural Gas Chemistry2003,12,4:2
3Spatiotemporal changes of NGF,BDNF and NT-3 in the developing spinalcords of embryonic chicken显示文摘BACY DAIP ZHOU H L 2010Neurochem Res2010,35,2:1
4Theo- ry, practice, prospection of Si fertilizer显示文摘Vladimir Matychenkov Xiao WEI Daiping LIU etc 2013Agricultural Sci- ence & Technology2013,14,50:1
5Effects of zirconia phase on the synthesis of higher alcohols over zirconia and modified zirconia 显示文摘He Daiping Ding Yunjie Luo Hongyuan et at 2004Journal of Moleculor Catalysis A: Chemical2004,208,12:1
6An Exceptionally Active and Selective Pt-Au/TiO2 Catalyst for Hydrogenation of the Nitro Group in Chloronitrobenzene显示文摘He Daiping Jiao Xiangdong Jiang Ping 0,,1:1
7GJB2 mutation spectrum in 2,063Chinese patients with nonsyndromic hearing impairment显示文摘DaiP Yu F Han B 2009JTransl Med2009,7,:1
8Preparation and photocatalytic activity of anatase TiO2 nanocrystallites with high thermal stability显示文摘He Daiping Li Farong 2007Materials Letter2007,61,:1
9An agent-based macro-economy decision support system显示文摘HU Daiping WANG Huanchen 2002Theory and Practice in System Engineering2002,,1:1
10Effects of zirconia phase on the synthesis of higher alcohols over zirconia and modified zirco nia显示文摘He Daiping Ding Yunjie 2004Journal of Moleculor Catalysis A : Chemical2004,208,12:1
11Small organic amine assisted synthesis of an extra-large pore containing open-framework zinc-cobalt phosphate templated by a chain-type polyamine显示文摘An open-framework zinc-cobalt phosphate CoZnPO4-V with 16-ring extra-large-pore channels has been obtained in the presence of chain-type polyamines as the structure directing agent (SDA). Its large single crystal suited for structure refinement has been prepared with the assistance of small organic amines. Single-crystal X-ray diffraction analysis has shown that CoZnPO4-V is a novel metal phosphate. It crystallizes in monoclinic space group P21/c (No. 14), with a = 31.936(3) , b = 8.3775(7) , c = 15.7874(13) , α = γ = 90°, β = 97.0530(10)°, V = 4191.8(6) 3, and Z = 4 with R1 = 0.0455,wR2 = 0.0869. Its three-dimensional framework can be considered as stacking from two-dimensional nets and one-dimensional units as linkers. Between the stacking nets and linkers are located extra-large channels with 16-ring apertures.LI DaiPing SONG HaiBin WANG HongGen LI Niu GUAN NaiJia XIANG ShouHe 2009Science China Chemistry2009,52,9:0
12High-static-low-dynamic stiffness isolator based on an electromagnetic negative stiffness spring with long linear stroke显示文摘Negative stiffness mechanisms can improve low-frequency vibration isolation performance and have been widely used in the vibration isolation of precision equipment. However, the negative stiffness mechanism usually introduces a nonlinear stiffness,resulting in a nonlinear response and worsening the vibration isolation performance, especially under large amplitude vibration.In this paper, an electromagnetic spring with linear negative stiffness(ESLNS) is proposed, in which the antagonistic ampere forces of the energized coils are used to generate negative stiffness within a long linear stroke. The magnetic field distribution is improved through the design of the magnetic circuit, thereby increasing the stiffness generation efficiency. The stiffness can be adjusted bidirectionally by current within the range of positive and negative stiffness. An electromagnetic stiffness model was established based on the equivalent magnetic circuit method. Experimental measurements verified the accuracy of the model and proved the linearity of the electromagnetic spring. A vibration isolator with high static and low dynamic stiffness(HSLDS) based on the ESLNS is designed and tested. The experimental results prove that the introduction of the ESLNS can effectively expand the isolation frequency band without changing the equilibrium position. Moreover, the vibration isolator with ESLNS does not produce nonlinear response. The proposed electromagnetic spring with linear negative stiffness extends the application range of HSLDS isolators to a large amplitude vibration environment.YUAN ShuJin WU YaJun SONG DaiPing PU HuaYan MOU LiSheng HOU Lei ZHAO JingLei LI XuePing LUO Jun WU Jie HUANG XiaoXu 2024Science China(Technological Sciences)2024,67,3:0
13SWELLING EQUILIBRIUM OF NONIONIC POLYACRYLAMIDE HYDROGEL IN AQUEOUS SALT SOLUTIONS显示文摘A series of nonionic polyacrylamide hydrogels, using acrylamide as monomer and N,N’-methylene diacrylamide as crosslinking agent, were prepared by the free radical polymerization in aqueous solution. Swelling equilibria for the gels were carried out in aqueous solutions of NaCl, KCl, CaCl2, Na2HPO4 and K2HPO4 with concentration ranging from 10-3 to 5mol/kgH2O at 25℃. Experimental results revealed that the chlorides and phosphates cause a different behavior at higher salt concentration. The swelling ratio increases with increasing concentration of chlorides salts, while decreases with the increased phosphates salt concentration. The phenomena seem to be related to the different interactions of chloride and hydrogen phosphate ions with the network groups. Furthermore, the effects of different concentration of crosslinking agent and total monomers on gel swelling performance were also investigated.XU Xiaoping LI Zhongqin GUO Daiping 2007Chinese Journal of Reactive Polymers2007,16,1:0
14Dynamic learning rates algorithm for BPNN to forecast time series of dam security显示文摘Time series data of dam security have a large number of observed values and should be forecasted accurately in time. Neural networks have the powerful approach ablilities of arbitrary functions and have been broadly utilized in many domains. In this paper, a dynamic learning rate training algorithm of back-propagation neural networks for time series forecasting is proposed and the networks with this algorithm are built to forecast time series of dam security. The application results demonostrate the efficiency of modelling and the effictiveness of forecasting.Hu Daiping Wu Ruiming Lei Aizhong Wang Qi 2007Progress in Natural Science:Materials International2007,17,12:0
15Reliability of the Brownish-flanked Bush Warbler's soft song in male-male conflict显示文摘Background: Soft song is a low-amplitude song produced by many birds. Recent studies have confirmed that soft song is an aggressive signal. For example, the Brownish-flanked Bush Warblers Cettia fortipes use soft song in male-male conflicts, particularly prior to attacks. Although stable signaling systems require that signals be honest on average,models predict that cheating is an acceptable strategy for some individuals or in some contexts.Methods: This study aimed to test the reliability of soft song as an aggressive signal in the brownish-flanked bush warbler. We used mounted specimens accompanied by broadcast songs or soft songs to simulate a male attempting to invade an existing territory.Results: We found the mounted specimen that coupled playback of soft songs suffered more and quicker attacks from the territory owner and that the relationship between soft song and subsequent attack in the territory owner was far from perfect. We observed territory owners that both over-signaled(i.e., produced soft song but did not attack) and under-signaled(i.e., attacked without producing soft song). Under-signaling territory owners were relatively more commonly than were over-signaling territory owners, particularly in simulated intrusion that coupled playback of soft song with a mount specimen.Conclusions: We discuss the cost of producing soft song and the potential benefit of the unreliable use of soft song and propose a new hypothesis for under-signaling with soft song; i.e., under-signaling territory owners might benefit from taking the initiative in fights.Canwei Xia Boye Liu Daiping Wang Huw Lloyd Yanyun Zhang 2015Chinese Birds2015,,2:0
16IMMOBILIZATION OF Saccharomyces Cerevisiae USING POLY(ACRYLAMIDE)GEL FOR ASYMMETRIC SYNTHESIS OF R(-)-MANDELIC ACID显示文摘In this paper,the poly(acrylamide)hydrogel used to immobilize saccharomyces cerevisiae for asymmetric synthesis of R(-)-mandelic acid was prepared with free radical ploymerization in deionized water at room temperature under nitrogen atmosphere.The influence of the composition of hydrogel,loading amount of cells and culture conditions on the asymmetric synthesis was investigated.Results show that PAAm hydrogel is a feasible carrier for immobilization of cells which is a potential alternative method to prepare enantiomerically pure R(-)-mandelic acid.LI Zhongqin GUO Daiping HUANG Xinghua YANG Kai XU Xiaoping 2006Chinese Journal of Reactive Polymers2006,15,1:0
17Healthcare data analysis system for regional medical union in smart city显示文摘Regional medical unions are practical approaches to deal with the cases that patients crowd in Grade 3 Class A general hospitals in metropolitan cities such as Shanghai,in China.However,electronic medical data analysis exists challenges when patients are referred among different hospitals in the regional medical unions during treatment procedures.In smart cities,demands for medical services provided by smart devises,complicate the environment of medical data analysis.In order to tackle the above problems,in this paper,a healthcare data analysis system for regional medical union is designed to support doctors from different hospitals to assess health conditions of patients in an overall data view.Behaviour patterns are mined from physiological index values.Tags are generated from social networks data to find the hot topics concerned by people living in common region.Experiments are given to illustrate the feasibility of the system in supporting healthcare data analysis.Boyi Xu Ling Li Daiping Hu Bin Wu Congcong Ye Hongming Cai 2018Journal of Management Analytics2018,5,4:0
18The evolution of courtship displays in Galliformes显示文摘Species in Galliformes have elaborate ritual courtship displays,often including strutting,fluffing of tail or head feathers,and vocal sounds that serve as excellent examples of sexual selection.According to the male orientation to the female while either posturing or moving,these courtship displays of gallinaceous species can be classified into three categories:1)‘frontal displays’,2)‘lateral displays’,and 3)‘both frontal and lateral displays’.Questions regarding which category of displays is the ancestral state and the evolutionary history of courtship displays in Galliformes remain unanswered.We collected and classified 131 species in terms of their courtship displays into the three categories listed above and carried out a large-scale comparative analysis to reveal the evolutionary trajectory of this trait.We found that the ancestral state of courtship displays of Galliformes involves both relatively short and straightforward frontal and lateral elements(i.e.,the category of‘both frontal and lateral displays’).Furthermore,ancestral trait reconstructions suggest that transitions from‘lateral displays’to‘frontal displays’occurred more frequently than the other way around(i.e.,from‘frontal displays’to‘lateral displays’).In addition,some transitions occurred from‘both frontal and lateral displays’to‘lateral displays’but not from‘both frontal and lateral displays’to‘frontal displays’.Ancestral state reconstruction of courtship displays at the root of the Galliformes phylogeny supports the‘both frontal and lateral displays’first scenario.This original state then evolved towards two extremes,either‘frontal displays’or‘lateral displays’,with more complicated and elaborate display components.Moreover,subsequent transitions occurred from‘lateral displays’to‘frontal displays’much more frequently than the other way around during the evolutionary history,indicating positive selection of‘frontal displays’.Xiyuan Guan Xiaodong Rao Gang Song Daiping Wang 2022Avian Research2022,13,1:0
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