Results 61 to 70 of about 789,262 (344)

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

Dubovsky’s Class of Mathematical Models for Describing Economic Cycles with Heredity Effects

open access: yesFractal and Fractional
The article is devoted to the study of economic cycles and crises, which are studied within the framework of the theory of N.D. Kondratiev long waves (K-waves). The object of the study is the fractional mathematical models of S. V.
Danil Makarov   +2 more
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Multiphase Trajectory Optimization of a Lunar Return Mission to an LEO Space Station

open access: yesInternational Journal of Aerospace Engineering, 2021
Lunar exploration architecture can be made more flexible and reliable with the support of a low-Earth orbit (LEO) space station. This study therefore evaluated a proposed hybrid optimization scheme to design the entire trajectory of a reusable spacecraft
Luyi Yang   +3 more
doaj   +1 more source

A New Foot Trajectory Planning Method for Legged Robots and Its Application in Hexapod Robots

open access: yesApplied Sciences, 2021
Compared with wheeled and tracked robots, legged robots have better movement ability and are more suitable for the exploration of unknown environments.
Haichuang Xia   +2 more
doaj   +1 more source

Characteristics of a Delayed System with Time-dependent Delay Time [PDF]

open access: yes, 2004
The characteristics of a time-delayed system with time-dependent delay time is investigated. We demonstrate the nonlinearity characteristics of the time-delayed system are significantly changed depending on the properties of time-dependent delay time and
B. Mensour   +16 more
core   +1 more source

Erythrocyte morphological states, phases, transitions and trajectories

open access: yesBiochimica et Biophysica Acta (BBA) - Biomembranes, 2010
Morphological response (MR) of red blood cells represents a triphasic sequence of spontaneously occurring shape transformation between different shape states upon transfer the cells into isotonic sucrose solution in the order: S(0) (initial discoid shape in physiological saline)-->S(1) (echinocytic shape at the beginning of MR, phase 1)-->S(2 ...
openaire   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Time optimal positioning control of a quadruped robot for trot gait

open access: yesNihon Kikai Gakkai ronbunshu, 2017
A design method of time-optimal trajectory of quadruped robots from an initial position to a target position is developed for trot gait. The designed trajectory consists of three phases, acceleration phase, steady walk phase and deceleration phase.
Yuhei SUZUKI, Hisashi OSUMI
doaj   +1 more source

Time-domain waveforms and phase-domain trajectories of fault recording and mathematical models of phase-domain trajectories

open access: yes, 2023
Abstract In order to form the phase-domain trajectories of fault recording and their mathematical models to construct a theoretical basis to mine fault feature parameters deeply, after analyzing the status of existing fault recording analysis and its application, its time-domain waveforms and phase-domain trajectories are plotted by the ...
Qun Ge, Lu Ren, Jia Li
openaire   +1 more source

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