نتایج جستجو برای: graded honeycomb structure ghs

تعداد نتایج: 1597132  

2014
Tim Räz Michael Esfeld Martin Gasser Marion Hämmerli Michael Messerli Antoine Muller Christian Sachse Tilman Sauer

In a recent paper, Aidan Lyon and Mark Colyvan have proposed an explanation of the structure of the bee’s honeycomb based on the mathematical Honeycomb Conjecture. This explanation has instantly become one of the standard examples in the philosophical debate on mathematical explanations of physical phenomena. In this critical note, I argue that the explanation is not scientifically adequate. Th...

Journal: :Advances in transdisciplinary engineering 2023

Hierarchical structures are widely observed in nature, and they have been considered to excellent mechanical properties. In this paper, a novel hierarchical honeycomb with graded design is proposed improve impact resistance. Two parameters selected determine the of hierarchy gradient respectively. A series nonlinear finite element models developed Abaqus systematically explore crashworthiness. ...

2013
Liping Heng Bin Wang Muchen Li Yuqi Zhang Lei Jiang

Creatures in nature possess almost perfect structures and properties, and exhibit harmonization and unification between structure and function. Biomimetics, mimicking nature for engineering solutions, provides a model for the development of functional surfaces with special properties. Recently, honeycomb structure materials have attracted wide attention for both fundamental research and practic...

ژورنال: سلامت کار ایران 2018

Background and aims: The Globally Harmonized System of Classification and Labeling of Chemicals (GHS) is an internationally agreed-upon standard developed by the United Nations to replace the previously used hazardous material classification and labelling all over the world, including Iran. The purpose of this study was to evaluate the perception of GHS, compared to old chemical hazard signs in...

Journal: :The International Journal of Advanced Manufacturing Technology 2023

Abstract This research aims at enhancing the performance of scale-model scooter decks by investigating various architected cellular metamaterial and bio-inspired core structure designs, such as honeycomb, tetrachiral, re-entrant, arrowhead, star-shaped arrangements. An initial effort is made toward design rapid prototyping small-scale deck with a uniform honeycomb structure. More specifically, ...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2018

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2007
Leon S Farhy Cyril Y Bowers Johannes D Veldhuis

Models of physiological systems facilitate rational experimental design, inference, and prediction. A recent construct of regulated growth hormone (GH) secretion interlinks the actions of GH-releasing hormone (GHRH), somatostatin (SRIF), and GH secretagogues (GHS) with GH feedback in the rat (Farhy LS, Veldhuis JD. Am J Physiol Regul Integr Comp Physiol 288: R1649-R1663, 2005). In contrast, no ...

2017
Xin Liang Mohammad Kaiser Konstantin Konstantinov Richard Tandiono Zhaoxiang Wang Jiazhao Wang

Honeycomb-like pure sulfur architectures were synthesized by a cooperative self-assembly strategy, in which a soft template is used to form the porous structure. Their electrochemical performance is significantly improved comparing with the commercial sulfur powder and the as-prepared sulfur without honeycomb morphology. There has been no report on using a soft template to prepare honeycomb-lik...

2011
Kwangmoo Kim

Using Monte Carlo calculations of the two-dimensional (2D) triangular lattice gas model, we demonstrate a mechanism for the spontaneous formation of honeycomb structure of anthraquinone (AQ) molecules on a Cu(111) plane. In our model long-range attractions play an important role, in addition to the long-range repulsions and short-range attractions proposed by Pawin, Wong, Kwon, and Bartels [Sci...

In this work, using plane wave method in the framework of density-functional theory, we calculated clamped-ion and relaxed-ion elasticity, stress and strain piezoelectric independent coefficients for seven stable combinations of honeycomb monolayers XY (X:B,Al,Ga,In ; Y:N,P,As,Sb). The coefficients calculations by two methods of density functional perturbation theory (DFPT) and finite differenc...

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