Results 71 to 80 of about 1,295,944 (345)

Frequency-Dependent Schroeder Allpass Filters

open access: yesApplied Sciences, 2019
Since the introduction of feedforward−feedback comb allpass filters by Schroeder and Logan, its popularity has not diminished due to its computational efficiency and versatile applicability in artificial reverberation, decorrelation, and dispersive
Sebastian J. Schlecht
doaj   +1 more source

Controlling the sign of chromatic dispersion in diffractive optics [PDF]

open access: yes, 2017
Diffraction gratings disperse light in a rainbow of colors with the opposite order than refractive prisms, a phenomenon known as negative dispersion [1, 2].
E. Arbabi   +4 more
semanticscholar   +1 more source

Dispersing hash functions

open access: yesRandom Structures & Algorithms, 2000
AbstractWe define a family of functions F from a domain U to a range R to be dispersing if for every set S ⊆ U of a certain size and random h ∈ F, the expected value of ∣S∣ – ∣h[S]∣ is not much larger than the expectation if h had been chosen at random from the set of all functions from U to R.We give near‐optimal upper and lower bounds on the size of ...
openaire   +2 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

Ocean convergence and the dispersion of flotsam

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance Ocean currents move material released on the ocean surface away from the release point and, over time, spread it over an increasingly large area.
E. D’Asaro   +18 more
semanticscholar   +1 more source

Predicting the Future Burden of Renal Replacement Therapy in Türkiye Using National Registry Data and Comparative Modeling Approaches

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül   +2 more
wiley   +1 more source

Pharmaceutical Dispersion Techniques for Dissolution and Bioavailability Enhancement of Poorly Water-Soluble Drugs

open access: yesPharmaceutics, 2018
Over the past decades, a large number of drugs as well as drug candidates with poor dissolution characteristics have been witnessed, which invokes great interest in enabling formulation of these active ingredients.
Xingwang Zhang   +3 more
semanticscholar   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Physical and mechanical properties of grain of spring barley varieties in the conditions of Tatarstan

open access: yesЗерновое хозяйство России
The aim of the work is to analyze the physical and mechanical properties of grain of spring barley varieties cultivated in the conditions of the Predkamsk zone of the Republic of Tatarstan.
V. I. Blokhin   +5 more
doaj   +1 more source

Experimental study of phase entrainment in copper solvent extraction

open access: yesDyna, 2020
The entrainment of the organic phase in the aqueous applied to typical solutions in a solvent extraction of copper process was studied. The organic phase used is composed of the commercial extractant LIX 984-N diluted in Shellsol 2046 AR.
Patricio Navarro Donoso   +3 more
doaj   +1 more source

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