Results 261 to 270 of about 2,209,976 (300)

On the Phenomenon of Bimodality in Aggregation Pattern Dynamics

2001
For a 1D stochastic model of capillary network formation, the phenomenon of bimodality is investigated. Bistability in the steady state regime can arise as a result of the combined action of resonance phenomena and threshold effects involving natural diffusion and/or external noise.
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Study of aggregation phenomenon of hematoporphyrin derivative by laser microphotolysis

SPIE Proceedings, 1991
The aggregation phenomenon of hematoporphyrin (HP) and hematoporphyrin derivative (HpD) in various solutions were investigated by FRAP technique. Nonlinear photodestruction quantum efficiency and diffusion coefficient of dye molecular complexes and proteins were measured. 1.
A. H. Arutunian, Vladimir A. Hovanessian, K. A. Sarkissian   +2 more
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Shark aggregation and tourism: opportunities and challenges of an emerging phenomenon

International Journal of Sustainable Development & World Ecology, 2019
In the last few winters, shark communities have been aggregating near the Israeli Mediterranean coast, at a specific point, near Hadera power station.
Z. Zemah Shamir, S. Zemah Shamir, D. Tchernov, A. Scheinin, N. Becker   +4 more
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Diffusion-limited aggregation: A kinetic critical phenomenon?

Contemporary Physics, 2000
Diffusion-limited aggregation (DLA) is a model which represents noisy growth limited by diffusion. This process is quite common in nature and the simple algorithm gives a good representation of the large-scale structure of many natural objects. The clusters grown in the computer and the real objects in question are tenuous and approximately self ...
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Moving Phenomenon: Aggregation and Analysis of Geotime-Tagged Contents on the Web

2009
The analysis of movement of people, vehicles, and other objects is important for carrying out research in social and scientific domains. The study of movement behavior of spatiotemporal entities helps enhance the quality of service in decision-making in real applications. However, the spread of certain entities such as diseases or rumor is difficult to
Kyoung-Sook Kim 0001, Koji Zettsu, Yutaka Kidawara, Yasushi Kiyoki   +3 more
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Aggregation phenomenon of PEG-grafted chitosan in aqueous solution

Polymer, 1998
Chitosan (deacetylated chitin), which is a naturally occurring polysaccharide having primary amino groups, is known to be insoluble in water because of its strong intermolecular hydrogen bonds. We prepared water-soluble poly(ethylene glycol) grafted chitosan (PEG-g-chitosan) through the chemical modification of chitosan and investigated its aggregation
Tatsuro Ouchi, Hidetoshi Nishizawa, Yuichi Ohya   +2 more
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Ultrastructural changes associated with an invagination phenomenon in embryonic neural aggregates

Experimental Cell Research, 1971
Abstract Aggregates formed by cell suspensions from the optic lobe of 4-day-old chick embryos have peripheral “placode-like” structures, which give rise by ulterior invagination to miniature neural tube-like structures, the rosettes. These events are accompanied by changes in cell shape, cell structure and cell contacts as shown by electron ...
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Coarsening phenomenon in two-dimensional colloidal aggregation and crystallization

Journal of Crystal Growth, 1996
Abstract Late stage coarsening (Ostwald ripening) phenomenon in a two-dimensional colloidal system has been investigated via in situ observation of clusters in a polystyrene colloidal film subjected to an external alternating electric field. In a regime with a growth exponent n ≈ 0.23 for the mean cluster gyration radius ( r g ), the gyration ...
Xin-Ya Lei, Peng Wan, Ning Xu, Cai-Hua Zhou, Nai-Ben Ming   +4 more
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Photophysical Phenomenon of Aggregation

2020
Neetu Tripathi, Manoj Kumar Goshisht
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A study of RBC aggregation-sedimentation phenomenon with conductivity method.

Science in China. Series B, Chemistry, life sciences & earth sciences, 1993
In this paper, we present a conductivity method for measuring the RBC (red blood cell) aggregation-sedimentation phenomenon and the theoretical analysis of this phenomenon. A theory describing the RBC aggregation-sedimentation phenomenon with the conductivity method is proposed and the formula of the l-t function which depicts the RBC aggregation ...
Z Y, Wen, Z L, Tao, W Y, Ma, J L, Xu, Y H, Zhao, H R, Wang   +5 more
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