To enhance the electrocatalytic activity of anode catalysts used in alkaline-media direct methanol fuel cells(DMFCs), a Ni@Pd Pt electrocatalyst was successfully prepared using a three-phase-transfer method. The Ni@Pd...To enhance the electrocatalytic activity of anode catalysts used in alkaline-media direct methanol fuel cells(DMFCs), a Ni@Pd Pt electrocatalyst was successfully prepared using a three-phase-transfer method. The Ni@Pd Pt electrocatalyst was characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), transmission electron microscopy(TEM), and high-resolution TEM(HRTEM) techniques. The experimental results indicate that the average particle size of the core–shell-structured Ni@Pd Pt electrocatalyst is approximately 5.6 nm. The Ni@Pd Pt electrocatalyst exhibits a catalytic activity 3.36 times greater than that of Pd Pt alloys for methanol oxidation in alkaline media. The developed Ni@Pd Pt electrocatalyst offers a promising alternative as a highly electrocatalytically active anode catalyst for alkaline DMFCs.展开更多
Up till now,Inner Mongolia whole region’s nonferrous metal industry has developed 5.64million tonnes of production capacity,newly added 1.45 million tonnes compared with 2012,up by 34.6%.Wherein,aluminum capacity was...Up till now,Inner Mongolia whole region’s nonferrous metal industry has developed 5.64million tonnes of production capacity,newly added 1.45 million tonnes compared with 2012,up by 34.6%.Wherein,aluminum capacity was3.40 million tonnes,newly added 1.05 million tonnes,up by 44.7%;lead 400,000 tonnes,展开更多
Using deep-level transient spectroscopy, the interaction between lithium (Li) and radiation defects has been studied in two aspects: the creation of Li-related defects and the effect of Li on the annealing of radiatio...Using deep-level transient spectroscopy, the interaction between lithium (Li) and radiation defects has been studied in two aspects: the creation of Li-related defects and the effect of Li on the annealing of radiation defects. It has been pointed out that oxygen in silicon can restrain the interaction between Li and radiation defects. Only when the concentration of Li is not far less than that of oxygen, can this interaction take effect. The Li-related defects E(0.17), E(0.21) E(0.38), E(0.50), H(0.42) and H(0.47) have been observed under different conditions. The similarity and difference between lithium and hydrogen in their interaction with radiation defects have been compared.展开更多
The effect of acupuncture at Neiguan(P 6)on regulating hemorrhagic shock in 90 rabbitswas observed.All the results suggested that acupuncture at Neiguan could raise blood pres-sure,protect cardiac pump function,correc...The effect of acupuncture at Neiguan(P 6)on regulating hemorrhagic shock in 90 rabbitswas observed.All the results suggested that acupuncture at Neiguan could raise blood pres-sure,protect cardiac pump function,correct the disturbance of secretion and metabolism ofhumoral factors,reduce blood adhesion to normal level and thus achieve anti-hemorrhagicshock.This study has provided scientific basis for expounding the mechanism of acupuncturein anti-shock.展开更多
20040059 An Yulin (School of Geophysics and Information Technology, China University of Geosciences, Beijing); Chen Yudong Advance in Theory and Method for Forward and Inverse Problem of Gravity and Magnetic Prospecti...20040059 An Yulin (School of Geophysics and Information Technology, China University of Geosciences, Beijing); Chen Yudong Advance in Theory and Method for Forward and Inverse Problem of Gravity and Magnetic Prospecting (Earth Science Frontiers, ISSN1005-2321, CN11-3370/P, 10(1), 2003, p. 141-149, 2 illus. , 40 refs. , with English abstract)展开更多
The use of electro-acupuncture in treatingperipheral facial paralysis during the acute stagehas been a controversial issue among acupunc-turists.Since 1970,100 cases of acute stage peri-pheral facial paralysis(1-10 da...The use of electro-acupuncture in treatingperipheral facial paralysis during the acute stagehas been a controversial issue among acupunc-turists.Since 1970,100 cases of acute stage peri-pheral facial paralysis(1-10 days after onset)have been treated with electro-acupuncture witha curs rate of 84% and an effective rate of 100%,no cases showing aggravation of symptoms aftertreatment.Electro-acupuncture is therefore usefulin the treatment for acute stage peripheral facialparalysis.展开更多
As an essential component of flexible optoelectronic devices,transparent conductive films made of silver nanowire (AgNW) have attracted wide attention due to the extraordinary optical,electrical and mechanical propert...As an essential component of flexible optoelectronic devices,transparent conductive films made of silver nanowire (AgNW) have attracted wide attention due to the extraordinary optical,electrical and mechanical properties.However,the application of AgNW coating still faces some challenges to be overcome including large contact resistance and poor durability.Here,we induce insulating graphene oxide over silver nanowire network through solution process to modify the electrical property and provide a protective layer.Strong interaction with substrates reducing the contact resistance of AgNW junctions and extra conductive channels of graphene oxide sheets contributes to the dramatic enhancement in electric property as well as durability.The resulting coating exhibits superior and uniform optoelectronic performances (sheet resistance of ~ 38 Ω·sq^-1 with 91% transmittance at 550 nm),outstanding stability in harsh environments,strong adhesion,and excellent mechanical flexibility after 3,000 bending cycles at a bending radius of 2.0 mm,which imply the promising application prospects in flexible optoelectronics.展开更多
基金financially supported by the Natural Science Foundation of Heilongjiang Province of China(No.B201203)the Foundation of Innovative and Entrepreneur Training Plan for College Students of Heilongjiang Province of China(No.201510212971)
文摘To enhance the electrocatalytic activity of anode catalysts used in alkaline-media direct methanol fuel cells(DMFCs), a Ni@Pd Pt electrocatalyst was successfully prepared using a three-phase-transfer method. The Ni@Pd Pt electrocatalyst was characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), transmission electron microscopy(TEM), and high-resolution TEM(HRTEM) techniques. The experimental results indicate that the average particle size of the core–shell-structured Ni@Pd Pt electrocatalyst is approximately 5.6 nm. The Ni@Pd Pt electrocatalyst exhibits a catalytic activity 3.36 times greater than that of Pd Pt alloys for methanol oxidation in alkaline media. The developed Ni@Pd Pt electrocatalyst offers a promising alternative as a highly electrocatalytically active anode catalyst for alkaline DMFCs.
文摘Up till now,Inner Mongolia whole region’s nonferrous metal industry has developed 5.64million tonnes of production capacity,newly added 1.45 million tonnes compared with 2012,up by 34.6%.Wherein,aluminum capacity was3.40 million tonnes,newly added 1.05 million tonnes,up by 44.7%;lead 400,000 tonnes,
文摘Using deep-level transient spectroscopy, the interaction between lithium (Li) and radiation defects has been studied in two aspects: the creation of Li-related defects and the effect of Li on the annealing of radiation defects. It has been pointed out that oxygen in silicon can restrain the interaction between Li and radiation defects. Only when the concentration of Li is not far less than that of oxygen, can this interaction take effect. The Li-related defects E(0.17), E(0.21) E(0.38), E(0.50), H(0.42) and H(0.47) have been observed under different conditions. The similarity and difference between lithium and hydrogen in their interaction with radiation defects have been compared.
文摘The effect of acupuncture at Neiguan(P 6)on regulating hemorrhagic shock in 90 rabbitswas observed.All the results suggested that acupuncture at Neiguan could raise blood pres-sure,protect cardiac pump function,correct the disturbance of secretion and metabolism ofhumoral factors,reduce blood adhesion to normal level and thus achieve anti-hemorrhagicshock.This study has provided scientific basis for expounding the mechanism of acupuncturein anti-shock.
文摘20040059 An Yulin (School of Geophysics and Information Technology, China University of Geosciences, Beijing); Chen Yudong Advance in Theory and Method for Forward and Inverse Problem of Gravity and Magnetic Prospecting (Earth Science Frontiers, ISSN1005-2321, CN11-3370/P, 10(1), 2003, p. 141-149, 2 illus. , 40 refs. , with English abstract)
文摘The use of electro-acupuncture in treatingperipheral facial paralysis during the acute stagehas been a controversial issue among acupunc-turists.Since 1970,100 cases of acute stage peri-pheral facial paralysis(1-10 days after onset)have been treated with electro-acupuncture witha curs rate of 84% and an effective rate of 100%,no cases showing aggravation of symptoms aftertreatment.Electro-acupuncture is therefore usefulin the treatment for acute stage peripheral facialparalysis.
基金supported by the National Natural Science Foundation of China (Nos.11890682,11832010 and 51861165103).
文摘As an essential component of flexible optoelectronic devices,transparent conductive films made of silver nanowire (AgNW) have attracted wide attention due to the extraordinary optical,electrical and mechanical properties.However,the application of AgNW coating still faces some challenges to be overcome including large contact resistance and poor durability.Here,we induce insulating graphene oxide over silver nanowire network through solution process to modify the electrical property and provide a protective layer.Strong interaction with substrates reducing the contact resistance of AgNW junctions and extra conductive channels of graphene oxide sheets contributes to the dramatic enhancement in electric property as well as durability.The resulting coating exhibits superior and uniform optoelectronic performances (sheet resistance of ~ 38 Ω·sq^-1 with 91% transmittance at 550 nm),outstanding stability in harsh environments,strong adhesion,and excellent mechanical flexibility after 3,000 bending cycles at a bending radius of 2.0 mm,which imply the promising application prospects in flexible optoelectronics.
