Results 81 to 90 of about 246,583 (327)

Teaching general relativity theory in high school: why, what and how

open access: yesRevista de Enseñanza de la Física, 2017
In this work, which is part of a wider research, the problem of teaching the General Theory of Relativity in sec-ondary school is addressed, even though this theory is scarcely addressed even in physics degree courses.
Irene Arriassecq   +2 more
doaj  

Phenotypic and genotypic characterization of single circulating tumor cells in the follow‐up of high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Single circulating tumor cells (sCTCs) from high‐grade serous ovarian cancer patients were enriched, imaged, and genomically profiled using WGA and NGS at different time points during treatment. sCTCs revealed enrichment of alterations in Chromosomes 2, 7, and 12 as well as persistent or emerging oncogenic CNAs, supporting sCTC identity.
Carolin Salmon   +9 more
wiley   +1 more source

Design, analysis and reformulation of a didactic sequence for teaching the special theory of relativity in high school

open access: yesRevista Brasileira de Ensino de Física
In this work, we design, implement and analyze a didactic sequence for the teaching of the basic topics of special relativity theory in high school. The sequence proposes a series of situations, specially designed to allow the emergence of the central ...
María Rita Otero   +2 more
doaj   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

open access: yesMolecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee   +8 more
wiley   +1 more source

Physical Justifications and Possible Astrophysical Manifestations of the Projective Theory of Relativity

open access: yesUniverse, 2019
The ‘projective theory of relativity’ is a theory developed historically by Oswald Veblen and Banesh Hoffmann, Jan Arnoldus Schouten and David van Dantzig.
Jacques L. Rubin
doaj   +1 more source

Relative Cohomology of Algebraic Theories [PDF]

open access: yesApplied Categorical Structures, 2016
7 pages, latex, v.2 accepted in Applied Categorical ...
openaire   +2 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Death, Time, and the Theory of Relativity [PDF]

open access: yesJournal of Pain and Symptom Management, 2011
Abstract This chapter contains a reprint of “Death, Time, and the Theory of Relativity,” which was published in 2011 in the Journal of Pain and Symptom Management. The author addresses the question of what providing end-of-life care is worth, and how this can be justified using some basic economic and quality-of-life metrics. The concept
openaire   +2 more sources

Circular RNA expression landscapes in myelodysplastic neoplasms: Associations with mutational signatures and disease progression

open access: yesMolecular Oncology, EarlyView.
In this explorative study, the abundance of circular RNA molecules in bone marrow stem cells was found to be elevated in patients with high‐risk myelodysplastic neoplasms, and to be associated with an increased risk of progression to acute myeloid leukemia.
Eileen Wedge   +17 more
wiley   +1 more source

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