检索范围:
排序: 展示方式:
Fanying MENG,Jinning LIU,Leilei SHEN,Jianhua SHI,Anjun HAN,Liping ZHANG,Yucheng LIU,Jian YU,Junkai ZHANG,Rui ZHOU,Zhengxin LIU
《能源前沿(英文)》 2017年 第11卷 第1期 页码 78-84 doi: 10.1007/s11708-016-0435-5
关键词: n-type Cz-Si thinner wafer surface texture high efficiency SHJ solar cell
利用三元合金保护和催化的硅光阳极与廉价硅太阳能电池相结合实现12.0%的太阳能制氢效率 Article
何凌云, 洪欣, 王亦清, 邢众航, 耿嘉峰, 郭鹏慧, 苏进展, 沈少华
《工程(英文)》 2023年 第25卷 第6期 页码 128-137 doi: 10.1016/j.eng.2022.03.023
n型硅(n-Si)表面在水溶液中容易被氧化和钝化,导致其在光电化学(PEC)分解水的析氧反应(OER)动力学缓慢。本工作通过欠电位沉积成功地在p+n-Si基底上电沉积了三金属Ni0.9Fe0.05Co0.05保护层。制备的Ni0.9Fe0.05Co0.05/p+n-Si光阳极具有优异的稳定性和PEC水氧化活性,具有相对低的OER起始电位(相对于可逆氢电极电势(RHE)仅为0.938 V),并且在1.23 V vs.RHE电位时具有较高的光电流密度(33.1 mA∙cm-2),显著优于Ni/p+n-Si光阳极。工作证明了Fe在Ni层的掺杂会在Ni0.9Fe0.05Co0.05/p+n-Si界面处产生较大的能带弯曲,促进界面电荷分离。
《能源前沿(英文)》 doi: 10.1007/s11708-023-0881-9
关键词: Ga(X)N/Si nanoarchitecture artificial photosynthesis water splitting solar toward hydrogen
Zhihao Si, Xinshan Song, Xin Cao, Yuhui Wang, Yifei Wang, Yufeng Zhao, Xiaoyan Ge, Awet Arefe Tesfahunegn
《环境科学与工程前沿(英文)》 2020年 第14卷 第1期 doi: 10.1007/s11783-019-1183-7
关键词: Sponge iron Wetland mesocosm Electronic donor Denitrification COD/N ratio
MEHRDAD, N. ABEDIMAHZOON, N. ASADOLLAHI
《结构与土木工程前沿(英文)》 2013年 第7卷 第2期 页码 117-126 doi: 10.1007/s11709-013-0205-y
关键词: beach profile evolution genetic algorithms group method of data handling Pareto reflective beaches
Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope
HERNáNDEZ, Marco CECCARELLI, Carlos LóPEZ-CAJúN, Alejandro GARCíA
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 252-260 doi: 10.1007/s11465-013-0249-7
The pose accuracy of a parallel robot is a function of the mobile platform posture. Thus, there is no a single value of the robot’s accuracy. In this paper, two novel methods for estimating the accuracy of parallel robots are presented. In the first method, the pose accuracy estimation is calculated by considering the propagation of each error, i.e., error variations are considered as a function of the actuator’s stroke. In the second method, it is considered that each actuator has a constant error at any stroke. Both methods can predict pose accuracy of precise robots at design stages, and/or can reduce calibration time of existing robots. An example of a six degree-of-freedom parallel manipulator is included to show the application of the proposed methods.
关键词: pose errors error estimation parallel robot radio telescopes
Zhenyun DUAN, Houjun CHEN, Zhilan JU, Jian LIU
《机械工程前沿(英文)》 2012年 第7卷 第3期 页码 312-321 doi: 10.1007/s11465-012-0308-5
In this paper, loxodromic-type normal circular-arc spiral bevel gear is proposed as a novel application of the circular-arc tooth profile at the gear transmission with intersecting axes. Based on the principle of molding-surface conjugation, the study develops a mathematical model for the tooth alignment curve and the computational flow at the design stage to enable the generation of the tooth surface. Machining of the tooth surface is then carried out to determine the interference-free tool path of the numerical control (NC). Moreover, a pair of loxodromic-type normal circular-arc spiral bevel gears is manufactured on computer numerical control (CNC) machine tools. The proposed theory and method are experimentally investigated, and the obtained results primarily reflect the superior performance of the proposed novel gear.
关键词: loxodrome circular-arc tooth profile Wildhaber-Novikov (W-N) gear spiral bevel gear
具有异构时延的多智能体系统的领导-跟随同步 Research Articles
Branislav REH罧, Volodymyr LYNNYK
《信息与电子工程前沿(英文)》 2021年 第22卷 第1期 页码 1-140 doi: 10.1631/FITEE.2000207
关键词: 多智能体系统;时滞;线性矩阵不等式
Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG
《能源前沿(英文)》 2017年 第11卷 第1期 页码 85-91 doi: 10.1007/s11708-016-0437-3
关键词: PECVD high pressure and high power a-Si:H microstructure passivation heterojunction solar cell
Haibin HUANG,Gangyu TIAN,Tao WANG,Chao GAO,Jiren YUAN,Zhihao YUE,Lang ZHOU
《能源前沿(英文)》 2017年 第11卷 第1期 页码 92-95 doi: 10.1007/s11708-016-0432-8
关键词: double-layer emitter α-Si:H/c-Si heterojunction solar cell short circuit current quantum efficiency current-voltage-temperature
基于正交质谱的N-糖组谱揭示哈夫病潜在病原学 Article
刘思, 刘圆圆, 林佳静, 刘笔锋, 何振宇, 吴晓旻, 刘欣
《工程(英文)》 2023年 第26卷 第7期 页码 63-73 doi: 10.1016/j.eng.2022.09.012
Preparation and lithium storage performances of g-C
Zhengxu BIAN, Zehua TANG, Jinfeng XIE, Junhao ZHANG, Xingmei GUO, Yuanjun LIU, Aihua YUAN, Feng ZHANG, Qinghong KONG
《能源前沿(英文)》 2020年 第14卷 第4期 页码 759-766 doi: 10.1007/s11708-020-0810-0
关键词: magnesium thermal reduction g-C3N4/Si nanocomposites volume expansion electroconductivity lithium-ion battery
Stability and dynamics of rotor system with 45° slant crack on shaft
Yanli LIN, Xiaohui SI, Fulei CHU
《机械工程前沿(英文)》 2011年 第6卷 第2期 页码 203-213 doi: 10.1007/s11465-011-0131-4
Crack on a shaft is one of the common damages in a rotor system. In this paper, transverse vibrations are calculated to compare the influences of transverse crack and slant crack on the rotor system. Results show that the vibration amplitude of the rotor system with a 45° slant crack on the shaft is larger than that with a transverse crack when the two types of crack have the same depth and the rotor system runs in the same condition. Stability and dynamic characteristics of the rotor system with a 45° slant crack on the shaft under torsional excitation are analyzed by considering opening and closing of the crack. It is shown that the instability of the transverse vibration of the rotor system increases with increasing difference between the bending stiffness in two main directions, and the vibration is stable when the two bending stiffness are identical. The spectrum analysis of the steady-state response reveals that the gravity and the eccentricity produce different frequency components, and when the two bending stiffness are identical, the multiple frequency components of the torsional excitation disappear. Further investigation shows that the vibration amplitudes in combined frequencies increase rapidly in transversal, torsional, and axial vibration with increasing slant crack depth. The results are helpful for the understanding the dynamic behavior of a rotor system with a slant crack on a shaft and can be used for the detection of the slant crack on a shaft.
关键词: rotor dynamics slant crack stability torsional excitation open and close
New practice in semaglutide on type-2 diabetes and obesity: clinical evidence and expectation
《医学前沿(英文)》 2022年 第16卷 第1期 页码 17-24 doi: 10.1007/s11684-021-0873-2
标题 作者 时间 类型 操作
High-quality industrial n-type silicon wafers with an efficiency of over 23% for Si heterojunction solar
Fanying MENG,Jinning LIU,Leilei SHEN,Jianhua SHI,Anjun HAN,Liping ZHANG,Yucheng LIU,Jian YU,Junkai ZHANG,Rui ZHOU,Zhengxin LIU
期刊论文
Ga(X)N/Si nanoarchitecture: An emerging semiconductor platform for sunlight-powered water splitting toward
期刊论文
Nitrate removal to its fate in wetland mesocosm filled with sponge iron: Impact of influent COD/N ratio
Zhihao Si, Xinshan Song, Xin Cao, Yuhui Wang, Yifei Wang, Yufeng Zhao, Xiaoyan Ge, Awet Arefe Tesfahunegn
期刊论文
Predicting beach profile evolution with group method data handling-type neural networks on beaches with
MEHRDAD, N. ABEDIMAHZOON, N. ASADOLLAHI
期刊论文
Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope
HERNáNDEZ, Marco CECCARELLI, Carlos LóPEZ-CAJúN, Alejandro GARCíA
期刊论文
Mathematical model and manufacture programming of loxodromic-type normal circular-arc spiral bevel gear
Zhenyun DUAN, Houjun CHEN, Zhilan JU, Jian LIU
期刊论文
Plasma enhanced chemical vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunction
Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG
期刊论文
Analysis of the double-layer α-Si:H emitter with different doping concentrations for α-Si:H/c-Si heterojunction
Haibin HUANG,Gangyu TIAN,Tao WANG,Chao GAO,Jiren YUAN,Zhihao YUE,Lang ZHOU
期刊论文
Preparation and lithium storage performances of g-C
Zhengxu BIAN, Zehua TANG, Jinfeng XIE, Junhao ZHANG, Xingmei GUO, Yuanjun LIU, Aihua YUAN, Feng ZHANG, Qinghong KONG
期刊论文
Stability and dynamics of rotor system with 45° slant crack on shaft
Yanli LIN, Xiaohui SI, Fulei CHU
期刊论文