Packing problems, even of objects with regular geometries, are in general non-trivial. For few special shapes, the features of crystalline as well as random, irregular two-dimensional (2D) packing structures are known. The packing of 2D crosses does not yet belong to the category of solved pr...
Two characteristics of two-dimensional figures are that they have area and also perimeter. Two-dimensional figures are shapes like squares and rectangles. They can be used to describe the shape of things like windows, tables, or tennis courts. Examples of several two-dimensional figures...
In the course of our study on the role of diamines in the crystallization of aluminophosphates, we have reported that N-methyl-diaminoalkanes could lead to ARTICLE IN PRESS A. Tuel et al. / Journal of Solid State Chemistry 178 (2005) 2322–2331 2323 solids impossible to obtain using the...
W. Barsoum, “The MN+1AXN Phases: A New Class of Solids: Thermodynamically Stable Nanolaminates,” Progress in Solid State Chemistry, 28, 201-281 (2000), both of which are incorporated by reference herein. While Ti3AlC2 is among the most widely studied of these materials, more than 60 ...
River sediments play a critical role in sustaining deltaic wetlands. Therefore, concerns are raised about wetlands’ fate due to the decline of river sediment supply to many deltas. However, the dynamics and drivers of suspended sediment near deltaic coa
Altitude of a Triangle The perpendicular segment from a vertex of the triangle to the line containing the opposite side. Note: An altitude can be inside or outside the triangle. It can also be one of the sides of the triangle.
This strategy is successful since N-aryl cleavage reactions are completely supressed and 2.tmeda and 2.pmdeta, which are highly soluble complexes, can be isolated as exceedingly air- and moisture-sensitive, dark violet crystalline solids in 33 and 56% yield (Fig. 2), respectively....
The lines are the least-squares fit lines. The white bar represents 10 mm. The temperature dependence of viscosity is written by [34,35,36] η = exp(E/kT), where E is the activation energy; we confirm that the temperature dependence of the loss modulus G″ (Figure S2) demonstrated ...
The lines are colour-coded according to different models of the crater-counting chronology of the Moon. The red dot marks the radioisotope age of the Chang’e-5 basalts and the translated crater density based on the crater-counting chronology function of ref.24. The blue squares are the calib...
Much of the qualitative nature of physical systems can be predicted from the way it scales with system size. Contrary to the continuum expectation, we observe a profound deviation from logarithmic scaling in the impedance of a two-dimensional LC circuit