Results 21 to 30 of about 7,477,490 (186)

Interference Alignment for the Multi-Antenna Compound Wiretap Channel [PDF]

open access: yes, 2010
We study a wiretap channel model where the sender has $M$ transmit antennas and there are two groups consisting of $J_1$ and $J_2$ receivers respectively. Each receiver has a single antenna. We consider two scenarios.
Ashish Khisti   +2 more
core   +2 more sources

Study of Radiation Resistance of WO3 Microparticles under Irradiation with Heavy Kr15+ and Xe22+ Ions

open access: yesNanomaterials, 2022
In this work, we consider the effect of irradiation with heavy Kr15+ and Xe22+ ions on the change in the structural and strength properties of WO3 microparticles, which are among the candidates for inert matrix materials. Irradiation with heavy Kr15+ and
Dauren B. Kadyrzhanov   +4 more
doaj   +1 more source

The maximum of Brownian motion minus a parabola [PDF]

open access: yes, 2010
We derive a simple integral representation for the distribution of the maximum of Brownian motion minus a parabola, which can be used for computing the density and moments of the distribution, both for one-sided and two-sided Brownian motion.Comment: 7 ...
Available From Piet Groeneboom   +3 more
core   +2 more sources

Laparoscopic resections for stage IV colorectal cancer - safety and effectiveness of the method as a guarantee for an uncomplicated postoperative period and optimal pharmacotherapeutic results [PDF]

open access: yesPharmacia
Introduction: Primary tumor resection can prevent future tumor-related complications in patients with stage IV colorectal cancer. This may influence the quality of life and prevent colostomies associated with the emergency surgery.
Vesselin Marinov   +7 more
doaj   +3 more sources

Fe2O3 Nanoparticles Doped with Gd: Phase Transformations as a Result of Thermal Annealing

open access: yesMolecules, 2021
The aim of this work is to study the effect of the phase composition of the synthesized Fe2O3-Gd2O3 nanoparticles on the efficiency of using magnetic hyperthermia as a basis for experiments. This class of structures is one of the most promising materials
Artem Kozlovskiy   +3 more
doaj   +1 more source

The colours of the Sun [PDF]

open access: yes, 2005
We compile a sample of Sun-like stars with accurate effective temperatures, metallicities and colours (from the UV to the near-IR). A crucial improvement is that the effective temperature scale of the stars has recently been established as both accurate ...
Chris Flynn   +4 more
core   +1 more source

Secondary Prevention and Quality of Life of Patients with Stable Coronary Heart Disease

open access: yesРациональная фармакотерапия в кардиологии, 2023
Aim. To assess the quality of life of patients with stable coronary heart disease (CHD) initially and 12 months after drug and non-drug secondary prophylaxis according to clinical guidelines.Material and methods.
E. D. Zharkova   +6 more
doaj   +1 more source

General principles for the prevention and treatment of complications of percutaneous endoscopic gastrostomy (review of literature)

open access: yesУчёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2020
We considered the views of researchers presented in the modern literature on both the problem as a whole and discussion questions regarding the causes of development, preventive measures, and methods of treating percutaneous endoscopic gastrostomy ...
K. V. Golubev   +4 more
doaj   +1 more source

Investigation of the Prospects for the Use of Iron-Containing Nanocomposites Doped with Rare Earth Elements as Catalysts for the Purification of Aqueous Media

open access: yesMagnetochemistry, 2023
The great interest in nanostructured magnetic composites is due to their great prospects for use as a basis for the development of catalysts for the adsorption of manganese in wastewater. Interest in magnetic nanocomposites in this direction is primarily
Kayrat K. Kadyrzhanov   +5 more
doaj   +1 more source

Exploring the influence of sintering temperature on the phase composition, mechanical strength, and dielectric constant of porous ca-stabilized zirconium dioxide ceramics

open access: yesDiscover Materials
ZrO2 ceramics have wide applications as structural materials in industrial, scientific, and technological fields. Despite the large number of works devoted to the influence of synthesis parameters on the formation of different phases of ZrO2 and the ...
Rafael I. Shakirzyanov   +8 more
doaj   +1 more source

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