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排序方式: 共有51条查询结果,搜索用时 16 毫秒
1.
Chandel Narendra Singh Chakraborty Subir Kumar Rajwade Yogesh Anand Dubey Kumkum Tiwari Mukesh K. Jat Dilip 《Neural computing & applications》2021,33(10):5353-5367
Neural Computing and Applications - The identification of water stress is a major challenge for timely and effective irrigation to ensure global food security and sustainable agriculture. Several... 相似文献
2.
Jia M Souchelnytskyi N Hellman U O'Hare M Jat PS Souchelnytskyi S 《Proteomics. Clinical applications》2010,4(10-11):816-828
3.
Ram Avtar Jat Ripandeep Singh S.C. Parida A. Das Renu Agarwal K.L. Ramakumar 《International Journal of Hydrogen Energy》2014
In the present study, we have for the first time reported the occupancy of deuterium in a new interstitial site of ZrCoD3 which explain the hydrogen induced disproportionation behavior of ZrCo alloy. We have also reported the effect of Ni substitution on interstitial site occupancy of deuterium in ZrCo1−xNixD3, which in turn explains the improved durability of these Ni substituted deuterides against disproportionation. The crystal structure of the ZrCo1−xNix (x = 0.0, 0.1, 0.2, 0.3) deuterides was investigated by X-ray powder diffraction and neutron diffraction methods. The XRD data reveals a single phase formation for all deuterides with varying Ni content (x). The neutron diffraction study shows that deuterium occupies a new site 8e in addition to 4c2 and 8f1. Additionally, the Zr–D distance in 8e site is shorter than that in ZrD2. Therefore, increase in 8e site occupancy will in turn decreases the durability against disproportionation and vice-versa. Furthermore, the neutron diffraction reveals that occupancy of new 8e site decreases and its Zr–D distance increases with increase in Ni content, which explicate the higher durability against disproportionation for Ni rich compound. 相似文献
4.
Pramod Kumar Pisharady Prahlad Vadakkepat Ai Poh Loh 《International Journal of Computer Vision》2013,101(3):403-419
A system for the detection, segmentation and recognition of multi-class hand postures against complex natural backgrounds is presented. Visual attention, which is the cognitive process of selectively concentrating on a region of interest in the visual field, helps human to recognize objects in cluttered natural scenes. The proposed system utilizes a Bayesian model of visual attention to generate a saliency map, and to detect and identify the hand region. Feature based visual attention is implemented using a combination of high level (shape, texture) and low level (color) image features. The shape and texture features are extracted from a skin similarity map, using a computational model of the ventral stream of visual cortex. The skin similarity map, which represents the similarity of each pixel to the human skin color in HSI color space, enhanced the edges and shapes within the skin colored regions. The color features used are the discretized chrominance components in HSI, YCbCr color spaces, and the similarity to skin map. The hand postures are classified using the shape and texture features, with a support vector machines classifier. A new 10 class complex background hand posture dataset namely NUS hand posture dataset-II is developed for testing the proposed algorithm (40 subjects, different ethnicities, various hand sizes, 2750 hand postures and 2000 background images). The algorithm is tested for hand detection and hand posture recognition using 10 fold cross-validation. The experimental results show that the algorithm has a person independent performance, and is reliable against variations in hand sizes and complex backgrounds. The algorithm provided a recognition rate of 94.36 %. A comparison of the proposed algorithm with other existing methods evidences its better performance. 相似文献
5.
N.S. AnandRam Avtar Jat S.G. SawantS.C. Parida Ziley Singh ChaudharyV. Venugopal 《International Journal of Hydrogen Energy》2011,36(5):3580-3585
The equilibrium pressure over the phase mixture (Li2NH + LiNH2 + LiH) was measured from 343 to 683 K by static manometric method. The plot of ln (peq/p0) versus (1/T) showed three distinct temperature regions with different slopes. Analysis of the equilibrium gas composition in each temperature regions revealed that the equilibrium gas is a mixture of H2, NH3 and N2 below 443 K whereas above 443 K, the equilibrium gas is mainly H2. The enthalpy and entropy of the reaction of H2 with Li2NH to form LiNH2 and LiH are found to be −55.0 ± 1.3 kJ?mol−1 and −86 ± 2 J?K−1?mol−1, respectively at 523 K, where LiNH2 exists in the solid state and −18.5 ± 0.5 kJ?mol−1 and −26 ± 1 J?K−1?mol−1, respectively at 658 K, where LiNH2 exists in the liquid state. The enthalpy and entropy of melting of solid LiNH2 are calculated as 36.5 ± 1.4 kJ?mol−1 and 60 ± 2 J?K−1?mol−1, respectively. 相似文献
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7.
Long Range Self‐Assembly of Polythiophene Breath Figures: Optical and Morphological Characterization
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Prahlad K. Routh Dmytro Nykypanchuk T. A. Venkatesh Mircea Cotlet 《Advanced functional materials》2015,25(37):5902-5909
Large‐area, device relevant sized microporous thin films are formed with commercially available polythiophenes by the breath figure technique, a water‐assisted micropatterning method, with such semitransparent thin films exhibiting periodicity and uniformity dictated by the length of the polymer side chain. Compared to drop‐casted thin films, the microporous thin films exhibit increased crystallinity due to stronger packing of the polymer inside the honeycomb frame. 相似文献
8.
装配式混凝土结构由于质量可靠、生产效率高、抗震性能好,近年来在国内得到快速发展。框架柱作为框架结构的重要受力构件,预制柱之间的连接节点则更是其关键部位,节点连接的受力可靠性将决定整体结构的抗震能力,节点连接的构造合理性将影响施工效率与质量。结合近年来国内外装配式混凝土框架柱连接节点领域的发展概况,从试验研究与数值模拟两方面进行总结,并分析了仍然存在的问题及未来发展方向,为我国装配式混凝土框架结构的发展提供参考。 相似文献
9.
Hybrid Photodetectors: Distinct Optoelectronic Signatures for Charge Transfer and Energy Transfer in Quantum Dot–MoS2 Hybrid Photodetectors Revealed by Photocurrent Imaging Microscopy (Adv. Funct. Mater. 29/2018)
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