Results 111 to 120 of about 9,417,604 (319)

Fluctuations of steps on crystal surfaces

open access: yes, 2001
Fluctuations of isolated and pairs of ascending steps of monoatomic height are studied in the framework of SOS models, using mainly Monte Carlo techniques.
Bartelt   +18 more
core   +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

The Volume and Intensity of Motor Activity in the Physical Education Classes

open access: yesInovacije u Nastavi, 2018
The realisation of the majority of objectives of physical education classes is based on the motor activity of students. Previous studies have shown that the activity of students during class is very low (Božović, 2011; Đokić, 2014; Marković et al ...
Goran V. Šekeljić   +1 more
doaj   +1 more source

Scaling up HIV/AIDS interventions through expanded partnerships (STEPs) in Malawi [PDF]

open access: yes
"This paper discusses enabling and constraining factors related to the scaling-up of the Scaling Up HIV/AIDS Interventions Through Expanded Partnerships (STEPs) initiative, supported by Save the Children U.S.A. (SC), to combat HIV/AIDS in Malawi. It also
Kadiyala, Suneetha
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

The N-steps Invasion Percolation Model

open access: yes, 1999
A new kind of invasion percolation is introduced in order to take into account the inertia of the invader fluid. The inertia strength is controlled by the number N of pores (or steps) invaded after the perimeter rupture.
Andrade   +13 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

Daily steps and all-cause mortality: a meta-analysis of 15 international cohorts

open access: yesLancet Public Health, 2022
Amanda E. Paluch   +44 more
semanticscholar   +1 more source

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