natural pattern
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Author(s):  
Jim Henry ◽  
Mesut Yurukcu ◽  
George Nnanna

Universe created with the fundamental laws of science. Nature is lazy and needs to form with the least possible to be perfect. A natural pattern, such as pinecones, sunflowers, pineapples, and cacti, has a double spiral structure. Once we look at these plants' centers, we will see the seeds line up in spirals shape. The number of spirals whirling in each direction will give us the Fibonacci numbers. We can give more examples representing these natural patterns; however, one example is unique and remarkable. The similarities between spiral galaxies- Milky Way and hurricanes. Are they similar in every property or just in shape and rotational movements? What are the similarities between them? This short review article will try to find these questions' answers by reviewing some literature articles. The first part of this article gave some information about hurricanes and galaxies. The second of this article focused on the comparison between hurricanes and galaxies. Finally, we will conclude the article with our remarks.


Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2811
Author(s):  
Dora Kroisová ◽  
Štěpánka Dvořáčková ◽  
Petr Kůsa

Plant and animal surfaces have become a model for preparing special synthetic surfaces with low wettability, reflectivity, or antibacterial properties. Processes that lead to the creation of replicas of natural character use two-step imprinting methods. This article describes a technique of synthetic polymer surface preparation by the process of two-stage imprinting. The laboratory-prepared structure copies the original natural pattern at the micrometer and sub-micrometer levels, supplemented by a new substructure. The new substructure identified by the scanning electron microscope is created at the nanometer level during the technological process. The nanostructure is formed only under the conditions that a hierarchical structure forms the surface of the natural replicated pattern, the replication mold is from a soft elastomeric material, and the material for producing the synthetic surface is a polymer capable of crystallizing. A new nanometer substructure formation occurs when the polymer cools to standard laboratory temperature and atmospheric pressure.


2020 ◽  
Vol 4 (2) ◽  
pp. 599-604
Author(s):  
Michael A. Onoja ◽  
P. H. Bukar ◽  
C. U. Omeje ◽  
A. M. Adamu

Instrumental neutron activation analysis (INAA) technique was used to investigate the abundance and distribution of rare earth elements (REE) in soil around Kaduna Refinery. The aim of the study is to assess the rare elements potential of Nigeria for economic exploitation. Five REEs (La, Dy, Eu, Yb, and Lu) were detected in varying concentrations ranging from a minimum of 0.6 µg/g (Lu) to a maximum of 249.0 µg/g (La). The elements existed with trends consistent with the natural pattern of REEs in soil, showing significant Eu and Dy anomalies which characterize upper plains and flood plains. The levels of REEs in soil in the study area were generally slightly above background levels, with minimal (La, Dy, and Eu), moderate (Yb), and significant (Lu) enrichments and trending: Lu ˃Yb ˃ Eu ˃ Dy ˃ La. The abundance of the REEs investigated cannot establish a potential of Nigeria for economic exploitation of the mineral, hence, rare earth project in the study area is not viable at the moment.


2020 ◽  
Vol 20 (2) ◽  
pp. 119-132
Author(s):  
Abdón Segundo Espada ◽  
Liliana Marrufo Saldaña ◽  
Julio Barra Hinojosa ◽  
Rosa Contreras Panizo

Author(s):  
Ahmed Chaouki Lokbani ◽  
Ahmed Lehireche ◽  
Reda Mohamed Hamou ◽  
Mohamed Amine Boudia

The aim of the authors' work is to model the intrusion detection system by scenario with a bio-inspired method in this case the system of protection of social bees. The natural pattern of social bees produces security efficiency by its three filters. In this paper, the authors focus on scenario approach they chose as a strategy to intrusion odor recognition of bees. They propose a new philosophy based on limited responsibility for each agent. This proposition aims to better exploit the performance of their hardware, and to use intelligently a kddcup'99 corpus.


2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Pablo S. Padrón ◽  
David W. Roubik ◽  
Ruben P. Picón

A checklist of Euglossini in Ecuador is given, including all currently described, valid species collected until 2018. The list has been assembled from museum records, fieldwork cited herein, and literature. The former species lists are nearly doubled here, with 1 Aglae, 23 Eufriesea, 68 Euglossa, 18 Eulaema, and 5 Exaerete, 115 in total with >50 new records for the country. Distribution and collection data are included, and some doubtful species are discussed. The Amazon region is the most species rich area but not necessarily a natural pattern, perhaps due to uneven sampling effort across the country. Southern Ecuador is relatively little sampled.


Author(s):  
Anne Dufourmantelle

Chinese thought and culture emphasize transitions, invisible germinations, and sentient life in contrast to Western culture that is focused on fixed identity. Gentleness is tied to this gradual process of transformation. Transformation is an attitude, a state of body and mind, a harmony with the “natural” pattern of things that mature and flourish, interacting with their surroundings. Gentleness also contains the seed of its opposite.


2017 ◽  
Vol 9 (2) ◽  
pp. 336-347
Author(s):  
László Németh

Abstract The hyperbolic Pascal triangle HPT4,q (q ≥ 5) is a new mathematical construction, which is a geometrical generalization of Pascal’s arithmetical triangle. In the present study we show that a natural pattern of rows of HPT 4,5 is almost the same as the sequence consisting of every second term of the well-known Fibonacci words. Further, we give a generalization of the Fibonacci words using the hyperbolic Pascal triangles. The geometrical properties of a HPT 4,q imply a graph structure between the finite Fibonacci words.


2016 ◽  
Vol 34 (15_suppl) ◽  
pp. e14516-e14516
Author(s):  
Mark Aleynick ◽  
Paul Peng ◽  
Linda Hammerich ◽  
Antoine Tanne ◽  
Judith Agudo ◽  
...  

nano Online ◽  
2016 ◽  
Author(s):  
Cinzia Casella ◽  
Martina Tuttolomondo ◽  
Poul Flemming Høilund-Carlsen ◽  
Jan Mollenhauer

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