עמוד 1 מ 168 תוצאות
A general class of multifacet optical resonators that have uniform polygonal geometries is described. Expressions for the transmission of light through classical refractive escape from the cavities are presented. The conventional Fabry-Perot resonator is shown to be a special case of this general
We developed a new and simple angle control strategy to construct shape- and size-tunable DNA polygonal cavities. A monomer with a controlled slope on one end was used for hierarchical assembly into diverse polygons in a single step. Additionally, by simply moving the position of sticky ends on the
Two laser stability criteria or lasing conditions for cavity geometry based on the standard ABCD matrix analysis and the Bilger and Stedman analysis [Appl. Opt. 26, 3710 (1987)] are reconciled. Beam steering from mirror misalignment is discussed similarly, generalizing the Bilger and Stedman
Electrically driven ultraviolet lasing was realized in two-dimensional ZnO nanowall networks from Au/MgO/n-ZnO/n-GaN/In structure, and whispering gallery type resonant modes are responsible for the lasing action. We present a comparative study on lasing action based on nanowall networks with
This paper reviews the phylogeny and ontogeny of "lymphatic stomata" through which fluids and cells in the pleural and peritoneal cavities enter the lymphatic system. In amphibians, the pleuroperitoneal cavity is connected through numerous pores with the wide subvertebral lymphatic sinus
Primary tissue culture system from the middle ear and the tracheal epithelium of the guinea pig was established using collagen gel method. The cultured epithelium was studied by phase-contrast microscopy, light and scanning electron microscopy. The outgrowth area of the epithelium was quantitatively
Postmortem examination of a meerkat which had been captive for eight years in zoo, revealed multinodular white masses filling the thoracic cavity with systemic metastasis. Microscopically, the neoplastic cells were polygonal to spindle-shaped and had eosinophilic cytoplasm often with variable
Based on the transformation media theory, we proposed a way to control the scattering of a cavity, or trench, located on a metallic plane. Specifically, we show how is possible to design transformation medium to fill up a cavity with arbitrary cross section, which is capable of enhancing the
Myofibromatosis is a rare but well recognized entity which was originally thought to affect only neonates and infants. It is now apparent however that adults may also be affected. Solitary cases affecting the oral cavity appear to be rare and only two cases of solitary lesions in adults appear in
A 10-year-old terrier crossbreed presented with a change in bark intonation of 3-4 month's duration and pronounced panting. Four variably sized masses were observed within the oral cavity. The largest mass was located within the parenchyma at the caudal region of the tongue. Others were located on
Fluctuations in the one-port scattering and normalized impedance matrices in three polygonal and one chaotic time-reversal invariant microwave billiards are experimentally investigated, in several levels of coupling and absorption, at room temperature and at 77 K. The observed distributions of
This report describes two cases of alveolar rhabdomyosarcoma of the nasal cavity with unusual histological appearances mimicking clear cell carcinoma. The closely packed tumour cells were polygonal and arranged in sheets and packets. They had an appreciable amount of clear cytoplasm due to
The intersection between a network of polygonal fractures and a cubic cavity is numerically studied. Several probabilities are defined and particular attention is paid to the probabilities of intersection or not of the percolating cluster with the cavity; they depend on the size of the domain, on
We previously showed that stromal cells derived from bone marrow specimens formed at the fracture site of human long bone differentiated during culture to polygonal cells and spindle cells, and polygonal cells, but not spindle cells, produced calcified matrix. To clarify the origin of polygonal
OBJECTIVE
Comparator choice has been found as one major factor impacting on the overall evidence supporting clinical interventions. We performed social network analysis (SNA) on trials on the prevention/management of caries/carious lesions, hypothesizing that certain comparators are proportionally