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| 1 | Transition metal doped mesoporous titania with a crystalline framework as catalysts for oxidation of p-bromotoluene to pbromobenzaldehyde显示文摘Transition metal M(M=Mn,Fe,Co,Ni,Cu,and Zn)doped mesoporous titania with a crystalline framework was employed as catalysts for the oxidation of p-bromotoluene(PBT)to p-bromobenzaldehyde(BBD)in acetic acid using aqueous hydrogen peroxide as oxidant.It was found that mesoporous TiO_(2) doped with those metals(Fe,Co and Ni)whose atomic radii are relatively smaller exhibited higher conversion rate of PBT.Among these catalysts,the Co/meso-TiO_(2) exhibited high substrate conversion and good product(p-bromobenzaldehyde)selectivity plus it can be reused once with almost the same activity.The effect of different Ti/Co(molar)ratio on the activities of Co/meso-TiO_(2) was also investigated. | Zehui YANG Lihui YIN Encai OU Yunan WANG Li PENG Jiaqiang WANG | 2008 | Frontiers of Chemical Science and Engineering2008，2，3： | 1 |
| 2 | Optical properties of metal nanoshells 显示文摘 | HAO Encai LI Suyou BAILEY R C | 2004 | J Phys Chem B2004，108，： | 1 |
| 3 | Highly efficient catalytic oxidation of cyclohexane over cobalt-doped mesoporous titania with anatase crystalline structure显示文摘 | Wenhua Yao Hua Fang Encai Ou | 2006 | Catalysis Communications2006，7，： | 1 |
| 4 | Synthesis and optical properties of anisotropic metal nanoparticle显示文摘 | Encai Hao George C Schatz Joseph T Hupp | 2004 | Journal of Fluorescence2004，14，4： | 1 |
| 5 | Controlling anisotropic nanoparticle growth through plasmon excitation显示文摘 | Rongchao Jin Charles Cao Y Encai Hao | 2003 | Nature2003，425，6957： | 1 |
| 6 | Non-linear prediction of security returns with moving average rules显示文摘 | C encay R | 1996 | Journal of Forecasting1996，15，3： | 1 |
| 7 | Moving average rules, volume and the predictability of security returns with feedforward networks 显示文摘 | C encay R Stengos T | 1998 | Journal of Forecasting1998，17，6： | 1 |
| 8 | Synthesis of silver nanodisks using polystyrene mesospheres as templates显示文摘 | Encai Hao K Lance Kelly Joseph T Hupp | 2002 | Journal of the American Chemical Society2002，124，15： | 1 |
| 9 | Allylic Oxidation of Cyclohexene with Molecular Oxygen Using Cobalt Resinate as Catalyst显示文摘 | Caixia Yin Zehui Yang Bin Li Fengmei Zhang Jiaqiang Wang Encai Ou | 2009 | Catalysis Letters (-)2009，，3： | 1 |
| 10 | Electromagnetic fields around silver nanoparticles and dimers显示文摘 | Encai H George C S | 2004 | J Chem Phys2004，120，： | 1 |
| 11 | Photoinitiator grafted styrene-butadiene-styrene triblock copolymer显示文摘 | Guoliang Wu Songjun Zeng Encai Ou | 2010 | Materials Science and Engineering:C2010，30，： | 1 |
| 12 | Highly effective catalytic oxidation of cyclohexane over cobalt-doped meso- porous titania with anatase crystalline structure显示文摘 | Yao Wenhua Fang Hua Ou Encai | 2006 | Catal Commun2006，7，6： | 1 |
| 13 | Highly efficient removalof phosphate by lanthanum-doped mesoporous SiO: 显示文摘 | Ou Encai Zhou Junjie Mao Shaochun | 2007 | Colloids and Surfaces A:Physicochemical and Engineering Aspects2007，308，123： | 1 |
| 14 | woguo diliuge fingji tequ-kasha jingji tequ(The Sixth Special Economic Zone of China-Kanshgar Special Economic Zone)显示文摘 | Wang Long Zhen Encai | | 0，，13： | 1 |
| 15 | Highly effective catalytic oxidation of cyclohexane over cobalt-doped meso- porous titania with anatase crystalline structure显示文摘 | Yao Wenhua Fang Hua Ou Encai | 2006 | Catal Commun2006，7，6： | 1 |
| 16 | Effects of window opening style on inside environment of solar greenhouse based on CFD simulation显示文摘Solar greenhouse is extensively used in horticultural production in China.Natural ventilation is one of the key technological means to adjust the inside environment of greenhouse,while the effects of window opening styles on the inside environment are still not well understood.In the present study,the temperature and air flow field of five operation styles,namely back roof central opening style(G1),back roof evenly spaced opening style(G2),top roof full opening style(G3),style of G1+G3,and style of G2+G3 were simulated using the CFD method.The results indicated that:(1)the simulated and measured results exhibited favorable agreement,with relative errors within 5%;(2)In the case of the windows opening area was the same and only single ventilation style was applied,back roof full opening style exhibited the best cooling effect.The inside average temperature of the greenhouse with G1 style decreased by 0.5°C and 1.6°C respectively compared with those of greenhouses with G2 and G3.(3)The cooling effect of the style of G2+G3 was more favorable than that of the style of G1+G3.The style of G2+G3 exhibited better cooling effect than the single ventilation styles,with the lowest temperature(27.5°C)and temperature uniformity coefficient(0.36). | Yachen Sun Encai Bao Chenmeng Zhu Lulu Yan Yanfei Cao Xuanhe Zhang Jianming Li Haiwei Jing Zhirong Zou | 2020 | International Journal of Agricultural and Biological Engineering2020，13，6： | 0 |
| 17 | Influence of thermodynamic disfigurement on the convective heat transfer of solar greenhouse显示文摘Solar greenhouse is a typical greenhouse without any additional heating system,which has developed rapidly in Northern China.However,due to the construction quality,management methods,especially the long-term use and other factors,there are usually different degrees of thermodynamic disfigurements in the envelop enclosure of solar greenhouse.The purpose of this study was to investigate the influences of thermodynamic disfigurement on the temperature distribution and convective heat transfer of solar greenhouse.In this study,the east and west compartments of a typical solar greenhouse which is located in Yangling,China(108°4′E,34°16′N)were tested.The air temperature of each compartment was collected using temperature recorders,and the thermal infrared images of different compartment envelopes were obtained by a thermal infrared imager on a typical cloudy day.Convective heat transfer coefficients and heat flux densities of different compartment envelopes in the solar greenhouse were calculated.The results showed that the temperature difference can be displayed in the thermal infrared images of compartment envelopes,the surface temperature of the front roof was the lowest,followed by the back roof,the wall surface temperature was the highest.The minimum average surface temperature of the front roof in the eastern compartment was only 3.8℃,which was 6.8℃ and 9.2℃ lower than the average surface temperature of the back roof and back wall,respectively.The surface average temperature of thermodynamic disfigurements located at the bottom of the south side in the front roof of the eastern compartment,whose area accounted for 16.5%of the total front roof in the eastern compartment,was only 5.4℃.Compared with non-thermodynamic disfigurement,the average convective heat transfer coefficient and heat flux density of thermodynamic disfigurements in the front roof of the eastern compartment were increased by 20.3%and 110.3%,respectively.The average air temperature in the eastern compartment was 3.5℃ lower than the average air temperature in the western compartment of the solar greenhouse.Construction of brick wall at the bottom of the south side of the front roof in the solar greenhouse helped to increase the inner surface temperature of the front roof,with an average temperature rise of 6.2℃,and reduce the area of thermodynamic disfigurement,which only accounted for 2.6%of the total front roof in the western compartment.The average surface temperature of thermodynamic disfigurements mainly caused by the entry and exit door in the wall of the eastern compartment was only 9.8℃,which was lower 3.2℃ than the average temperature of non-thermodynamic disfigurement of the wall.Thermodynamic disfigurement helped to increase heat loss.The weighted average proportion of thermodynamic disfigurement in the western compartment was 2.1%,while that of thermodynamic disfigurement in the eastern compartment was 10.7%.The thermal insulation performance of the western compartment envelope in the solar greenhouse was better than that of the eastern compartment envelope. | Yachen Sun Yanfei Cao Haotian Wang Changji Zhou Jinxin Xiao Chengyao Jiang Jianming Li Encai Bao Zhirong Zou | 2020 | International Journal of Agricultural and Biological Engineering2020，13，4： | 0 |
| 18 | Tuning electronic properties of cobalt phthalocyanines for oxygen reduction and evolution reactions显示文摘Metal–phthalocyanines are a class of catalytically active materials promising in energy conversion and storage fields(e.g.,electrocatalysis).However,understanding and controlling the electrochemical properties in metal-phthalocyanine systems is challenging.Herein,we elucidate the electrocatalytic origins of a series of cobalt-phthalocyanine molecular catalysts and finetune their electronic properties at the atomic level,both experimentally and computationally.The interactions between the cobalt center and the local coordination environment are regulated by introducing either electron-donating or electron-withdrawing groups on the phthalocyanine ligand,and the spin-orbit splitting of cobalt is increased by~0.15 eV compared with the nonsubstituted ligand.Specifically,the aminated cobalt phthalocyanine-based electrocatalysts exhibit low free energies in the ratedetermining steps of the oxygen reduction(-1.68 eV)and oxygen evolution reactions(0.37 eV).This contributes to the high electrocatalytic activity(e.g.,a halfwave potential of 0.84 V and an overpotential of 0.30 V at 10 mAcm^(-2)),featuring a high selectivity of a four-electron pathway(i.e.,a negligible by-product of hydrogen peroxide).These catalysts also exhibit exceptional kinetic current density(Tafel slope of 100 mV dec^(-1))in oxygen reduction reactions,in addition to a superior power density(158 mWcm^(-2))and a high cycling stability(>1,300 cycles)in Zn-air batteries,outperforming the commercial Pt/C and/or RuO2counterparts. | Jianlin Jiang Zhen Liu Shuaijun Pan Xinnian Xia Bing Qin Yang Hu Xuxu Wang Jiamin Lan Yu Gu Encai Ou Weijian Xu Joseph J.Richardson Rui Guo | 2024 | Science China Chemistry2024，67，1： | 0 |
| 19 | EFFECT OF Mg AND Zr ADDITION ON CREEP CRACK GROWTH BEHAVIOUR OF A Ni-BASE SUPERALLOY显示文摘The creep crack growth(CCG)and the time to carck initiation and rupture of specimen(trcand tr)were measured by means of electrical potential method on single edge notchedspecimens at 700℃.The field near the crack tip under steady-state creep was represented byenergy rate integral(C*),and the CCG rate as a function of C* has been obtained.Theagreement between the predicted and observed trcvalues is quite good.It was found that theaddition of small amount of Mg and Zr in the alloys causes trcand tr of the specimens to in-crease significantly. | GUO Encai XU Fengqin Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beijing,China GUO Encai,Dept.No.5,Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beijing,China | 1989 | Acta Metallurgica Sinica(English Letters)1989，2，2： | 0 |
| 20 | Application performances of two greenhouses with new types of backwall in Yangling,China显示文摘In order to investigate the application performances of the solar greenhouses with new types of backwall(greenhouse W_(2),and greenhouse W_(3))and the ordinary clay brick backwall greenhouse(greenhouse W_(1)),and provide a theoretical basis for the construction of solar greenhouse in Yangling Demonstration Zone,Shaanxi,China,two greenhouses with different new types of backwall were designed.The backwall of one of them was built with lightweight aggregate concrete block(greenhouse W_(2))and that of the other one was assembled with a row of sand-filled cement pipes(greenhouse W_(3)).The tested greenhouses were constructed in Yangling Demonstration Zone.Based on the data collected on typical sunny and cloudy days,the indoor temperature,inside wall temperature,and the heat flow of the greenhouses with new types of backwall were compared with those detected in the ordinary clay brick backwall solar greenhouse,and the tested results were numerically simulated.According to the comparison of the physiological indicators of tomatoes planted in the greenhouses and the construction costs,the greenhouse type with the best practicability was found.The results indicated that:The average air temperature in greenhouses W_(1),W_(2),and W_(3)and outside was 15.1℃,15.9℃,17.3℃,and−0.4℃ on the night of a sunny day,and the air temperature in W_(3)was the highest.The average air temperature in greenhouses W_(1),W_(2),and W_(3)and outside were 9.5℃,13.3℃,11.0℃,and−5.5℃ on the night of a cloudy day,the air temperature in W_(2)was the highest.In the depth of 0-330 mm from the interface of the backwalls,the walls were obviously affected by the solar radiation,and the temperature changed greatly.The wall temperature on the sunny days exhibited an ascending order of W_(1),W_(2),W_(3),while on the cloudy days was in the ascending order of W_(1),W_(3),W_(2).The wall of W_(3)absorbed the most heat during the daytime and released the most heat at night on the sunny day,while W_(2)exhibited the second most heat absorption during the daytime,however,it exhibited the highest heat release at night on the cloudy day,which were almost equaled to its heat absorption.Tomatoes in W_(3)grew well and exhibited the highest yield,and this greenhouse had the lowest construction costs.Comprehensively considering the physiological indicators of tomatoes and the corresponding construction costs of greenhouses,W_(3)has the best application performance in Yangling Demonstration Zone. | Yachen Sun Haotian Wang Chenmeng Zhu Hongyi Lyu Xuanhe Zhang Yanfei Cao Jianming Li Zhirong Zou Encai Bao | 2022 | International Journal of Agricultural and Biological Engineering2022，15，3： | 0 |
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