Results 31 to 40 of about 308,967 (294)
Alternative approach to all-angle negative refraction in two-dimensional photonic crystals
, 2007 We show that with an appropriate surface modification, a slab of photonic crystal can be made to allow wave transmission within the band gap. Furthermore, negative refraction and all-angle-negative-refraction (AANR) can be achieved by this surface ...
A. Taflove +6 more
core +1 more source
African Vision and Eye Health, 2017 Purpose: To determine means and ranges for axial length, anterior chamber depth, lens thickness values and their intercorrelations in an African population.
Khathutshelo P. Mashige +1 more
doaj +1 more source
Cylindrical Superlens by a Coordinate Transformation
, 2008 Cylinder-shaped perfect lens deduced from the coordinate transformation method is proposed. The previously reported perfect slab lens is noticed to be a limiting form of the cylindrical lens when the inner radius approaches infinity with respect to the ...
J. B. Pendry, Min Qiu, Min Yan, Wei Yan
core +1 more source
Proximity Drawings of High-Degree Trees [PDF]
, 2010 A drawing of a given (abstract) tree that is a minimum spanning tree of the vertex set is considered aesthetically pleasing. However, such a drawing can only exist if the tree has maximum degree at most 6. What can be said for trees of higher degree?
Barát J. +5 more
core +1 more source
Processing and Microstructure of WC-CO Cermets by Laser Engineering Net Shaping [PDF]
, 2008 Submicron-sized tungsten carbide-cobalt (WC-Co) powder and nanostructured WC-Co powder were applied to make thick wall samples by the Laser Engineered Net Shaping (LENS®) process.
Lavernia, E. J. +3 more
core +1 more source
Qualitative and quantitative evaluation of acute angle-closure mechanisms
BMC Ophthalmology, 2017 Background To evaluate ocular biometric parameters in different subtypes of acute angle closure and compared to fellow eyes of AAC and PACS eyes. Methods This is a retrospective chart review study.
Yanin Suwan +5 more
doaj +1 more source
A note on the depth-from-defocus mechanism of jumping spiders [PDF]
, 2017 Jumping spiders are capable of estimating the distance to their prey relying only on the information from one of their main eyes. Recently, it has been shown that jumping spiders perform this estimation based on image defocus cues.
Blum, Christian +5 more
core +2 more sources
Learning Wavefront Coding for Extended Depth of Field Imaging [PDF]
, 2020 Depth of field is an important factor of imaging systems that highly affects the quality of the acquired spatial information. Extended depth of field (EDoF) imaging is a challenging ill-posed problem and has been extensively addressed in the literature ...
Akpinar, Ugur +4 more
core +2 more sources
FEBS Letters, EarlyView.Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas +3 more
wiley +1 more source
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source