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| 1 | Enhanced N_(2)-to-NH_(3)conversion efficiency on Cu3P nanoribbon electrocatalyst显示文摘Ambient electroreduction of nitrogen(N_(2))is considered as a green and feasible approach for ammonia(NH_(3))synthesis,which urgently demands for efficient electrocatalyst.Morphology has close relationship with catalytic activity of heterogeneous catalysts.Nanoribbon is attractive nanostructure,which possesses the flexibility of one-dimensional nanomaterials,the large surface area of two-dimensional nanomaterials,and lateral size confinement effects.In this work,Cu_(3)P nanoribbon is proposed as a highly efficient electrocatalyst for N_(2)-to-NH_(3)conversion under benign conditions.When measured in N_(2)-saturated 0.1 M HCl,such Cu_(3)P nanoribbon achieves high performance with an excellent Faradaic efficiency as high as 37.8%and a large yield of 18.9μg·h^(−1)·mgcat.−1 at−0.2 V.It also demonstrates outstanding stability in long-term electrolysis test at least for 45 h. | Qian Liu Yiting Lin Shuang Gu Ziqiang Cheng Lisi Xie Shengjun Sun Longcheng Zhang Yongsong Luo Abdulmohsen Ali Alshehri Mohamed SHamdy Qingquan Kong Jiahong Wang Xuping Sun | 2022 | Nano Research2022，15，8： | 1 |
| 2 | Uncertainty modeling of wind power frequency regulation potential considering distributed characteristics of forecast errors显示文摘Large-scale integration of wind power generation decreases the equivalent inertia of a power system, and thus makes frequency stability control challenging. However, given the irregular, nonlinear, and non-stationary characteristics of wind power, significant challenges arise in making wind power generation participate in system frequency regulation. Hence, it is important to explore wind power frequency regulation potential and its uncertainty. This paper proposes an innovative uncertainty modeling method based on mixed skew generalized error distribution for wind power frequency regulation potential. The mapping relationship between wind speed and the associated frequency regulation potential is established, and key parameters of the wind turbine model are identified to predict the wind power frequency regulation potential. Furthermore, the prediction error distribution of the frequency regulation potential is obtained from the mixed skew model. Because of the characteristics of error partition, the error distribution model and predicted values at different wind speed sections are summarized to generate the uncertainty interval of wind power frequency regulation potential. Numerical experiments demonstrate that the proposed model outperforms other state-of-the-art contrastive models in terms of the refined degree of fitting error distribution characteristics. The proposed model only requires the wind speed prediction sequence to accurately model the uncertainty interval. This should be of great significance for rationally optimizing system frequency regulation resources and reducing redundant backup. | Cheng Yan Yi Tang Jianfeng Dai Chenggen Wang Shengjun Wu | 2021 | Protection and Control of Modern Power Systems2021，6，1： | 1 |
| 3 | The construction of wavelet finite element and its application 显示文摘 | Cheng Xuefeng Yang Shengjun Ma Junxing He Zhengjia | 2004 | Finite Elements in Analysis and Design2004，40，56： | 1 |
| 4 | Preparation and optical properties of waterborne acrylic-based cool white coatings显示文摘Cool coatings(solar reflective coatings)possess a high total solar reflectance and a high thermal emittance,and they have potential applications in building surfaces,pavements,and oil tanks.By decreasing the accumulation of heat,these coatings can reduce the urban heat island effect to increase thermal comfort and to decrease energy consumption in hot zones.In this work,a cool white coating based on waterborne acrylic was prepared.The reflectance and thermal emittance were measured using an ultravioletvisible-near-infrared spectrophotometer and the steadystate calorimetric technique,respectively.The cool coating possessed a total solar reflectance of 0.887 and a thermal emittance of 0.85.The linear fitting results indicated that the thickness of the dry film is an important factor that affects the reflectance and that the physical limit of total solar reflectance in practical cool coatings is 0.91.A homemade device developed according to military specification MIL-E-46096C was used to measure insulation temperature differences,and an insulation temperature difference of29°C was obtained.The above results demonstrated that the cool coating can be applied to buildings. | Shengjun Cheng Hongjiang Liu Yanfeng Gao | 2014 | Chinese Science Bulletin2014，59，31： | 1 |
| 5 | Automatic segmentation technique for acetabulum and femoralhead in CT images显示文摘 | Cheng Yuanzhi Zhou Shengjun Wang Yadong | 2013 | Pattern Recognition2013，46，11： | 1 |
| 6 | Identification, pathogenicity, and fungicide sensitivity of Eutiarosporella dactylidis associated with leaf blight on maize in China显示文摘Maize(Zea mays L.) is an economically vital grain crop that is cultivated worldwide. In 2011, a maize foliar disease was detected in Lingtai and Lintao counties in Gansu Province, China. The characteristic signs and symptoms of this disease include irregular chlorotic lesions on the tips and edges of infected leaves and black punctate fruiting bodies in dead leaf tissues. Given favourable environmental conditions, this disease spread to areas surrounding Gansu. In this study, infected leaves were collected from Gansu and Ningxia Hui Autonomous Region between 2018and 2020 to identify the disease-causing pathogen. Based on morphological features, pathogenicity tests, and multilocus phylogenetic analysis involving internal transcribed spacer(ITS), 18S small subunit rDNA(SSU), 28S large subunit rDNA(LSU), translation elongation factor 1-alpha(TEF), and β-tubulin(TUB) sequences, Eutiarosporella dactylidis was identified as the causative pathogen of this newly discovered leaf blight. Furthermore, an in vitro bioassay was conducted on representative strains using six fungicides, and both fludioxonil and carbendazim were found to significantly inhibit the mycelial growth of E. dactylidis. The results of this study provide a reference for the detection and management of Eutiarosporella leaf blight. | Cheng Guo Xiaojie Zhang Baobao Wang Zhihuan Yang Jiping Li Shengjun Xu Chunming Wang Zhijie Guo Tianwang Zhou Liu Hong Xiaoming Wang Canxing Duan | 2024 | Journal of Integrative Agriculture2024，23，3： | 0 |
| 7 | Field-portable ratiometric fluorescence imaging of dual-color label-free carbon dots for uranyl ions detection with cellphone-based optical platform显示文摘Under the public spotlight,uranyl(UO22+)ions has attracted considerable attention for the extreme radioactive and chemical toxicity to ourselves and our environment.Herein,we present a simple and effective ratiometric fluorescence imaging method for the visualizing and quantitative detection UO22+ions by cellphone-based optical platform.The sensing solution was prepared by mixing label-free red carbon dots(r-CDs)and blue carbon dots(b-CDs)together with a fixed photoluminescence intensity ratio of 4:1.When UO22+ions were added,the fluorescence of r-CDs can be selectively quenched,while the fluorescence of b-CDs remains stable without spectral cha nges.With the gradually increase the amounts of UO22+ions,the different response of dual-color CDs resulted in a signification color evolution from deep red to dark purple under the ultraviolet(UV)light illumination.Then,a cellphone-based optical platform was constructed for directly imaging the color change of the samples,and the built-in Colorpicker APP quickly output the red,green and blue(RGB)channel values of these images within one second.Interesting,there was a linear relationship between the ratio of red and blue(R/B)channel values and UO22+ions concentration from 0μmol/L to 30.0μmol/L(R^2=0.92804)with the detection limit of^8.15μmol/L(signal-to-noise ratio of 3).In addition,the optical platform has also been applied to the quantification of UO22+ions in tap water and river water sample.With the advantage of low-cost,portable,easy to operation,we anticipate that this method would greatly improve the accessibility of UO22+ions detection even in resource-limited areas. | Jingjing Qian Nana Cao Jian Zhang Jinjin Hou Qian Chen Cheng Zhang Yudie Sun Shengjun Liu Lifang He Kui Zhang Haibo Zhou | 2020 | Chinese Chemical Letters2020，31，11： | 0 |
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