Results 121 to 130 of about 6,790 (254)
Dissections into equilateral triangles
, 1991 The paper shows that an equilateral triangle (and more generally any convex polygon) has no finite dissection into incongruents equilateral triangles. Moreover, the maximum number \(f(n)\) of distinct sizes of equilateral triangles in a dissection of an equilateral triangle into \(n\) parts is equal to \(cn-o(n)\) as \(n\to\infty\) for some constant ...
openaire +2 more sources
Kant's Solution to the Trilemma of Concept Formation
European Journal of Philosophy, EarlyView.Abstract According to a widespread assumption, Kant's logical account of concept formation starts with comparison, where the latter involves concepts. On this assumption, the formation of a concept presupposes other concepts, so that the argument is threatened either by circularity, regress, or break‐off.
Daniel Erlewein
wiley +1 more source
, 2000 Semiconductor microlasers with an equilateral triangle resonator (ETR) and an output waveguide are proposed and analyzed by the finite-difference time-domain technique and the Pade approximation. The numerical results show that microlasers with an output
Huang YZ +3 more
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Expansion of invasive carabids across elevation and habitats on sub‐Antarctic South Georgia
Insect Conservation and Diversity, EarlyView.Two introduced carabid species have continued to expand their ranges on the sub‐Antarctic island of South Georgia over the past 10–15 years. The species have colonised inland valleys and are present across habitats but are more abundant in those with high vegetation cover. N‐mixture models revealed the optimal sampling method, intensity and habitat for
Pierre Tichit +5 more
wiley +1 more source
Equilateral Triangle Concept for Relocation of the Nipple in Breast Reduction
Cerrahpaşa Medical JournalObjective: Planning and marking are vital stages of breast reduction, and a significant step in this process is deciding the new location of the nipple.
Alp Ercan +3 more
doaj +1 more source
GaSb based midinfrared equilateral-triangle-resonator semiconductor lasers
, 2008 Theoretical calculations of the mode characteristics of an equilateral-triangle resonator (ETR) with a 10 mu m cavity side length show that the fundamental mode, with longitudinal mode index of 25, has a wavelength of 2.185 mu m and a longitudinal mode ...
Johnson SR +5 more
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Erythrocyte ‘Feierzeit’ reaction: Novel filamentous and vesicular response to n‐butyl acetate
Journal of Microscopy, EarlyView.Abstract Human erythrocytes (red blood cells; RBCs) undergo spontaneous disassembly after several hours of exposure to n‐butyl acetate (nBA). Images of the morphological changes were captured in time‐lapse sequences using differential interference contrast (DIC) light microscopy.
Philip W. Kuchel
wiley +1 more source
, 2000 The mode wavelength and quality factor (Q-factor) for resonant modes in optical equilateral triangle resonators (ETR's) are calculated by the finite-difference time-domain (FDTD) technique and the Pade approximation, For an ETR with the side length of 3 ...
Huang YZ +3 more
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New Phytologist, EarlyView.Morphospace position and phylogenetic placements of Trimeriantha monopolyada. Summary Floral structure is a key aspect of angiosperm diversity. Recent research revealed that significant floral disparity was already present in the Cretaceous. However, our understanding of early floral diversity remains limited, as it is directly dependent on the fossil ...
Xieting Wu +7 more
wiley +1 more source
Equilateral-triangle-resonator injection lasers with directional emission
, 2007 Equilateral-triangle-resonator (ETR) lasers with an output waveguide jointed at one vertex of the resonator are fabricated on (100) GaInAsP-InP wafers using photolithography and a two-step inductively coupled plasma (ICP) etching technique.
yzhuang@red.semi.ac.cn +9 more
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