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Fractales
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2321por Sun, Zhihua, Xiong, Jin, Cao, Shubo, Zhu, Jianxiong, Jia, Xuzhi, Hu, Zhigang, Liu, Kaiping“…After characterizing the fine aggregate used, the mechanical properties were tested to characterize the toughness of sand concrete, the box-counting fractal dimensions were calculated to analyze the roughness of fracture surfaces, and the microstructure was tested to observe the path and width of microcracks and hydration products in sand concrete. …”
Publicado 2023
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2322por Zhou, Yan, Shi, Jing, Henderson, Mark Julian, Li, Xiuhong, Tian, Feng, Duan, Xiaohui, Tian, Qiang, Almásy, László“…The inter-granular voids with size of ~10 nm exhibited a less volume-filling ratio at high pressures (>15 kN) as indicated by a decrease of the volume fractal exponent. The response of these structural parameters to external pressures implied that the main densification mechanisms under die compaction were the flow, fracture, and plastic deformation of the TATB granules. …”
Publicado 2023
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2323por Rani, S., Shelyag, S., Karmakar, C., Zhu, Ye, Fossion, R., Ellis, J. G., Drummond, S. P. A., Angelova, M.“…Statistical, power spectrum, fractal and entropy analyses were used to derive features from the actigraphy data. …”
Publicado 2022
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2324por Talantseva, Oksana I., Portnova, Galina V., Romanova, Raisa S., Martynova, Daria A., Sysoeva, Olga V., Grigorenko, Elena L.“…The power spectral density of the resting state EEG was typical in our patient with only the values of non-linear EEG dynamics: Hjorth complexity and fractal dimension were drastically attenuated compared with the patient’s neurotypical peers. …”
Publicado 2023
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2325“…The high catalytic activity of the oxygen evolution reaction indicated the insertion of Fe(3+) into the skeletons and the occurrences of isomorphic substitution. The fractal evolutions revealed that hydrothermal treatments with the increase of Fe content strongly affected the morphologies of Fe species with rough and disordered surfaces. …”
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2326por Buchman, Aron S., Wang, Tianhao, Oveisgharan, Shahram, Zammit, Andrea R., Yu, Lei, Li, Peng, Hu, Kun, Hausdorff, Jeffrey M., Lim, Andrew S. P., Bennett, David A.“…Following variable selection using multivariate modeling with forward and then backward elimination, age, sex, education, and 3 of 27 non-demographic covariates including motor abilities, a fractal metric, and IADL disability remained significantly associated with declining TDPA accounting for 21% of its variance (9% non-demographic and 12% demographics covariates). …”
Publicado 2023
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2327“…The nonlinear features such as, approximate and spectral entropy, Katz fractal dimension behaved like Beta band oscillation. …”
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2328Efficient Removal of Tetracycline and Bisphenol A from Water with a New Hybrid Clay/TiO(2) Compositepor Adesina, Morenike O., Block, Inga, Günter, Christina, Unuabonah, Emmanuel I., Taubert, Andreas“…The Brouers–Sotolongo fractal model best describes the kinetic data for both TET and BPA adsorption, predicting that the adsorption process occurs via a complex mechanism involving various forces of attraction. …”
Publicado 2023
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2329por Dai, Chunquan, Zhou, Zhaochen, Zhang, Huidi, Jiang, Kun, Li, Haisheng, Yu, Haiyang“…Taking highway tunnels as the research object, this paper extracts three parameters, including length, maximum width and fractal dimension, from the binary image of highway tunnel lining cracks. …”
Publicado 2023
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2330por Liu, Weiguang, Delalibera Rodrigues, Rafael, Yan, Jianglong, Zhu, Yu-tao, de Freitas Pereira, Everson José, Li, Gen, Zheng, Qiusheng, Zhao, Liang“…From visual inspection, we perceive that healthy and COVID-19 chest radiographic images present different levels of geometric complexity. Therefore, we apply fractal dimension and quadtree as feature extractors to characterize such differences. …”
Publicado 2023
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2331“…Results showed that HC pretreatment caused the formation of bulk nanobubbles (BNBs), which significantly modified the particle interactions and thereby modified the size and mass fractal dimension (D(f)) of aggregates under different SIA conditions. …”
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2332por Vaferi, Kourosh, Vajdi, Mohammad, Nekahi, Sahar, Heydari, Amir, Sadegh Moghanlou, Farhad, Nami, Hossein, Jafarzadeh, Haleh“…The current research focuses on optimizing the Nusselt number (Nu) and pressure drop (ΔP) in a bionic fractal heat sink. The artificial neural network (ANN) and response surface methodology (RSM) were used to model the thermos-hydraulic behavior of the MCHS. …”
Publicado 2023
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2333Printing Three‐Dimensional Refractory Metal Patterns in Ambient Air: Toward High Temperature Sensorspor Yu, Jichuan, Hu, Chuxiong, Wang, Ze, Wei, Yuankong, Liu, Zhijin, Li, Qingang, Zhang, Lei, Tan, Qiulin, Zang, Xining“…Several applications are presented, including a fractal pattern‐based strain gauge, an electrically small antenna (ESA) patterned on a hemisphere, and a wireless temperature sensor that can work up to 350 °C and withstand burning flames. …”
Publicado 2023
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2334por Noerr, Patrick S., Zamora Alvarado, Jose E., Golnaraghi, Farnaz, McCloskey, Kara E., Gopinathan, Ajay, Dasbiswas, Kinjal“…Motivated by the structure and function of vasculogenic networks, we predict how measures of network connectivity like percolation probability and fractal dimension as well as local morphological features including junctions, branches, and rings depend on cell contractility and density and on substrate elastic properties including stiffness and compressibility. …”
Publicado 2023
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2335“…Previously, the analysis of atomic force microscopy (AFM) images allowed us to distinguish normal from cancerous/precancerous human epithelial cervical cells using only the fractal dimension parameter. High-resolution maps of adhesion between the AFM probe and the cell surface were used in that study. …”
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2336por Smyslov, Ruslan Y., Emel’yanov, Artem I., Ezdakova, Ksenia V., Korzhova, Svetlana A., Gorshkova, Yulia E., Khripunov, Albert K., Migunova, Alexandra V., Tsvigun, Natalia V., Prozorova, Galina F., Veselova, Varvara O., Kopitsa, Gennady P., Lu, Lijun, Mao, Yanchao, Pozdnyakov, Alexander S.“…The data obtained allowed the estimation of the fractal dimensions and ranges of self-similarity and gave new information about the BC mesostructure and its CH. …”
Publicado 2023
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2337“…Intriguingly, particle distribution is directly tied to the wet–dry cycle frequency, while the fractal dimension of soil particles consistently wanes. …”
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2338por Aon, Miguel A., Roussel, Marc R., Cortassa, Sonia, O'Rourke, Brian, Murray, Douglas B., Beckmann, Manfred, Lloyd, David“…Moreover RDA and PSA showed that the bioenergetic dynamics in both systems show fractal scaling over at least 3 orders of magnitude, and that this scaling obeys an inverse power law. …”
Publicado 2008
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2339por Gönci, Balázs, Németh, Valéria, Balogh, Emeric, Szabó, Bálint, Dénes, Ádám, Környei, Zsuzsanna, Vicsek, Tamás“…Statistical physics inspired approaches to our data, such as fractal dimension of the infected clusters as well as their size distribution, seem to fit into a percolation theory based interpretation. …”
Publicado 2010
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2340por Perkiömäki, Juha S.“…Some studies have suggested that some newer measures describing non-linear dynamics of heart rate, such as fractal measures, may reveal prognostic information beyond that obtained by the conventional measures of HRV. …”
Publicado 2011
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