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排序方式: 共有288条查询结果,搜索用时 31 毫秒
1.
Mengting Ma Zijun Li Feng Yang Huaixiang Wu Wuyang Huang Zhongquan Sui Harold Corke 《International Journal of Food Science & Technology》2021,56(7):3607-3617
Waxy, normal and high-amylose maize starches were subjected to heat-moisture treatment (HMT) and then added to wheat flour (WF) in different ratios (1%, 5% and 10%). The properties of blends and their cooked noodles were studied to investigate the effects of HMT starches. The incorporation of HMT starch in WF led to an increase in swelling power, peak viscosity and breakdown and to a decrease in setback, thus inhibiting retrogradation, hence enhancing resultant noodle softness. Compared to the same addition ratio of native starch to WF, HMT starch led to higher tensile strength and extensibility in resultant noodles. WF with added HMT starch had higher resistant starch than with native starch. This study showed that addition of HMT maize starch has potential to bring nutritional benefits. However, it is necessary to select the proper blending ratio and amylose content of starch to add, in consideration of its effect on noodle quality. 相似文献
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Yongwang Li Yanqun Shao Weibin Zhang ShanShan Ye Jiangcong Zhou Mengting Chen Jianyan Ding Quansheng Wu Zhibiao Hu 《Journal of the American Ceramic Society》2021,104(12):6299-6308
Herein, a novel Bi3+-activated Ca3Y2Ge3O12 (CYGO) narrow-band cyan-emitting phosphor was synthesized. It can be excited from 320–420 nm, and the strongest excitation peak is located at 370 nm, which is suitable for current near-ultraviolet (NUV) chips perfectly. The full width at half maximum is at 52 nm. By analyzing the crystal structure of the sample, we infer that the Bi3+ ions replace the Y3+ site to form a highly symmetrical BiO6 octahedron. The time-resolved photoluminescence (TRPL) spectra of CYGO: Bi3+ reveal that the only a single emission center exists in the host lattice. A warm white light–emitting diode (WLED) device with a low correlated color temperature (3148 K) and a high color rendering index (90.2) was fabricated by using the as-prepared sample, and the significant thermal stability of CYGO: Bi3+ guarantees its potential application in WLEDs. It is verified that the structure with only one crystallographic Y site for Bi3+ dopant occupation and highly symmetrical and dense structure is conducive to realize narrow-band emission, which will provide experience for researchers to explore more Bi3+-activated phosphors used for high-end lighting. 相似文献
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Jingjie Liu Mengting Zheng Jiantao Li Yifei Yuan Chenghang Li Shanqing Zhang Lin Yang Zhengyu Bai Jun Lu 《Advanced functional materials》2023,33(2):2209753
Exploring efficient electrocatalysts for oxygen evolution reaction (OER) is an urgent need to advance the development of sustainable energy conversion. Though defect engineering is considered an effective strategy to regulate catalyst activity for enhanced OER performance, the controllable synthesis of defective oxides electrocatalysts remains challenging. Here, oxygen defects are introduced into NiCo2O4 nanorods by an electrochemical lithiation strategy. By tuning in situ lithiation potentials, the concentration of oxygen defects and the corresponding catalytic activity can be feasibly regulated. In addition, the relationship between the changes in the defect density and electronic structure and the lithiation cut-off voltages is revealed. The results show that NiCo2O4 nanorods undertook intercalation and two-step conversion reaction, in which the lithiation-induced conversion reaction gives rise to a CoO@NiO-based structure with higher defect density and lower oxidation states. As a result, the defective CoO@NiO-based catalyst exhibits exceptional OER activity with an overpotential of 270 mV at 10 mA cm−2, which is about 74 mV below the pristine nanomaterials. This research proposes a novel strategy to explore high-performance catalysts with structural stability and defect control. 相似文献
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Hadoop在处理海量小图像数据时,存在输入分片过多以及海量小图像存储问题。针对这些问题,不同于采用HIPI、SequenceFile等方法,提出了一个新型图像并行处理模型。利用Hadoop适合处理纯文本数据的特性,本模型使用存储了图像路径的文本文件替换图像数据作为输入,不需要设计图像数据类型。在Map阶段直接完成图像的读取、处理、存储过程。为了简化图像处理算法,将OpenCV和Map函数结合并设计了对应的存储方法,实现小图像文件的存储。实验表明,在Hadoop分布式系统平台下,模型不论在小数据量还是在大数据量的测试数据环境中,都具有良好的吞吐性能和稳定性。 相似文献
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