Results 61 to 70 of about 4,166,400 (347)

Information entropy of classical versus explosive percolation

open access: yes, 2015
We study the Shannon entropy of the cluster size distribution in classical as well as explosive percolation, in order to estimate the uncertainty in the sizes of randomly chosen clusters. At the critical point the cluster size distribution is a power-law,
da Silva, L. R.   +2 more
core   +1 more source

Exercise Interventions in Children, Adolescents and Young Adults With Paediatric Bone Tumours—A Systematic Review

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser   +5 more
wiley   +1 more source

A boost circuit for photovoltaic maximum power point tracking

open access: yesDianzi Jishu Yingyong, 2019
In the photovoltaic power generation system, the boost circuit for maximum power tracking has problems such as insufficient circuit boosting capability and large input ripple, an improved boost circuit to embed switching inductance into parallel ...
Pan Jian, Liu Tianjun, Li Jiacheng
doaj   +1 more source

Closed Loop solar array-ion thruster system with power control circuitry [PDF]

open access: yes, 1979
A power control circuit connected between a solar array and an ion thruster receives voltage and current signals from the solar array. The control circuit multiplies the voltage and current signals together to produce a power signal which is ...
Gruber, R. P.
core   +1 more source

A maximum power point tracking for a photovoltaic system based on optimum sinusoidal modulated control pulses [PDF]

open access: yes, 2014
Photovoltaic systems have grown rapidly in the last few decades. This growth has enhanced research about this technology, focusing on reducing cost and improving efficiency. Maximum power point tracking (MPPT), which increases the overall efficiency of a
Alqarni, M, Darwish, MK
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Maximum Power Point Tracking Based on Sliding Mode Control

open access: yesInternational Journal of Photoenergy, 2015
Solar panels, which have become a good choice, are used to generate and supply electricity in commercial and residential applications. This generated power starts with the solar cells, which have a complex relationship between solar irradiation ...
Nimrod Vázquez   +4 more
doaj   +1 more source

Maximum power point tracking for variable-speed fixed-pitch small wind turbines [PDF]

open access: yes, 2009
Variable-speed, fixed-pitch wind turbines are required to optimize power output performance without the aerodynamic controls. A wind turbine generator system is operated such that the optimum points of wind rotor curve and electrical generator curve ...
Jovanovic, Milutin   +3 more
core   +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

Development of a Global Maximum Power Point Tracker for Photovoltaic Module Arrays Based on the Idols Algorithm

open access: yesMathematics
The main objective of this paper is to develop a maximum power point tracker (MPPT) for a photovoltaic module array (PVMA) under conditions of partial shading and sudden changes in solar irradiance. PVMAs exhibit nonlinear characteristics with respect to
Kuei-Hsiang Chao, Yi-Chan Kuo
doaj   +1 more source

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