Results 51 to 60 of about 131,912 (319)

Shadow filters – new family of second-order filters

open access: yesElectronics Letters, 2010
A new family of second-order filters is introduced. When an external voltage amplifier is added to a second-order filter cell (passive or active), the characteristic frequency of the resulting filter can then be modified by acting only on the value of the gain of this amplifier. All the properties of these new filters are examined.
Y. Lakys, A. Fabre
openaire   +1 more source

X-Raying the Dark Side of Venus - Scatter from Venus Magnetotail?

open access: yes, 2016
This work analyzes the X-ray, EUV and UV emission apparently coming from the Earth-facing (dark) side of Venus as observed with Hinode/XRT and SDO/AIA during a transit across the solar disk occurred in 2012. We have measured significant X-Ray, EUV and UV
Afshari, M.   +5 more
core   +1 more source

Methods for Alias-Free Shadows Rendering [PDF]

open access: yes, 2012
Tato práce se zabývá metodami pro odstranění aliasingu při zobrazení stínů. Je zde popsána metoda stínových map, její principy, postup a hlavně nedostatky v podobě vzniku aliasu.
Posolda, Jan
core  

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Nutritive and Antioxidant properties of Shade Dried Leafy Vegetables Consumed in Northern Côte d’Ivoire

open access: yesTurkish Journal of Agriculture: Food Science and Technology, 2016
Leafy vegetables are highly perishable and often subjected to post-harvest wastes. Among the various methods of preservation, the effect of shadow drying on the nutritive value and antioxidant properties of five (5) leafy vegetables species widely ...
Patricia Dehegnan Oulaï   +2 more
doaj   +1 more source

Kinematic GNSS Shadow Matching Using Particle Filters [PDF]

open access: yes, 2014
Student Paper Award Winner. The poor performance of GNSS user equipment in urban canyons is a well-known problem and is particularly inaccurate in the cross-street direction.
Wang, L
core  

Power quality issues of 3MW direct-driven PMSG wind turbine [PDF]

open access: yes, 2015
This paper presents power quality issues of a grid connected wind generation system with a MW-class direct-driven permanent magnet synchronous generator (PMSG).
Ahmed, IA, Taylor, GA, Zobaa, AF
core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Plecstatin inhibits hepatocellular carcinoma tumorigenesis and invasion through cytolinker plectin

open access: yesMolecular Oncology, EarlyView.
The ruthenium‐based metallodrug plecstatin exerts its anticancer effect in hepatocellular carcinoma (HCC) primarily through selective targeting of plectin. By disrupting plectin‐mediated cytoskeletal organization, plecstatin inhibits anchorage‐dependent growth, cell polarization, and tumor cell dissemination.
Zuzana Outla   +10 more
wiley   +1 more source

Lossless and Efficient Secret Image Sharing Based on Matrix Theory Modulo 256

open access: yesMathematics, 2020
Most of today’s secret image sharing (SIS) schemes are based on Shamir’s polynomial-based secret sharing (SS), which cannot recover pixels larger than 250. Many exiting methods of lossless recovery are not perfect, because several problems arise, such as
Long Yu   +4 more
doaj   +1 more source

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