Results 121 to 130 of about 2,520,292 (373)

Process and pattern in cichlid radiations - inferences for understanding unusually high rates of evolutionary diversification.

New Phytologist, 2015
The cichlid fish radiations in the African Great Lakes differ from all other known cases of rapid speciation in vertebrates by their spectacular trophic diversity and richness of sympatric species, comparable to the most rapid angiosperm radiations.
O. Seehausen
semanticscholar   +1 more source

Electromagnetic Radiation* [PDF]

, 1999
Electromagnetic radiation, commonly referred to as light, underpins all spectroscopic techniques, ranging from the highly energetic gamma rays, through x-rays, ultraviolet, visible, infrared, microwaves to the low-energy radio waves. The principles of wave- and particle-like behaviour determine the nature of the radiation and its interaction with ...
openaire   +4 more sources

Long non‐coding RNAs as therapeutic targets in head and neck squamous cell carcinoma and clinical application

FEBS Open Bio, EarlyView.
Long non‐coding RNAs (lncRNAs) occupy an abundant fraction of the eukaryotic transcriptome and an emerging area in cancer research. Regulation by lncRNAs is based on their subcellular localization in HNSCC. This cartoon shows the various functions of lncRNAs in HNSCC discussed in this review.
Ellen T. Tran, Ruchi A. Patel, Amogh Chariyamane, Ratna B. Ray   +3 more
wiley   +1 more source

People Living with HIV's Worry That the COVID-19 Health Crisis Could Impact Long-Term HIV Care: Lessons From the French Context for Future Disease Epidemics

Journal of the International Association of Providers of AIDS Care
Background: In 2020, people living with HIV (PLHIV) in France were worried that the COVID-19 health crisis would lead to long-term changes in their HIV care.
M. Salcedo PhD, T. Alain MA, C. Lacoux MA, J.C. Jones MA, C. Della Vecchia PhD, N. Charpentier MA, R. Mabire-Yon PhD, L. Vallet MA, X. Mabire PhD, D. Ferraz PhD, D. Michels PhD, M. Préau PhD   +11 more
doaj   +1 more source

Impact of the hypoxic microenvironment on spermatogonial stem cells in culture

Frontiers in Cell and Developmental Biology
The stem cell niche plays a crucial role in the decision to either self-renew or differentiate. Recent observations lead to the hypothesis that O2 supply by blood and local O2 tension could be key components of the testicular niche of spermatogonial stem
A. S. Gille, A. S. Gille, A. S. Gille, A. S. Gille, M. Givelet, M. Givelet, M. Givelet, M. Givelet, D. Pehlic, D. Pehlic, C. Lapoujade, C. Lapoujade, B. Lassalle, B. Lassalle, V. Barroca, V. Barroca, A. P. Bemelmans, D. Borderie, D. Borderie, D. Moison, D. Moison, G. Livera, G. Livera, L. R. Gauthier, L. R. Gauthier, F. D. Boussin, F. D. Boussin, N. Thiounn, I. Allemand, I. Allemand, C. Peyssonnaux, C. Peyssonnaux, J. P. Wolf, J. P. Wolf, V. Barraud-Lange, V. Barraud-Lange, L. Riou, L. Riou, P. Fouchet, P. Fouchet   +39 more
doaj   +1 more source

Polarization control proposal for Shanghai deep ultraviolet free electron laser

, 2012
In this paper, a fully coherent radiation option with controllable polarization is proposed for Shanghai deep ultraviolet free electron laser (FEL) test facility.
Allaria, Bahrdt, Bo Liu, Born, Chao Feng, Chapman, Deng, Ding, Dong Wang, Emma, Faatz, Feng, Geng, Glownia, Haixiao Deng, Jianhui Chen, Kim, Kim, Li, Lie Feng, Litvinenko, Meng Zhang, Miao Zhang, Reiche, Saldin, Shigemi, Taihe Lan, Tiedtke, Tong Zhang, Wu, Wu, Xingtao Wang, Yan, Yu, Zhao, Zhimin Dai   +35 more
core   +1 more source

Recently evolved diversity and convergent radiations of rainforest mahoganies (Meliaceae) shed new light on the origins of rainforest hyperdiversity.

New Phytologist, 2015
Tropical rainforest hyperdiversity is often suggested to have evolved over a long time-span (the 'museum' model), but there is also evidence for recent rainforest radiations.
E. Koenen, J. J. Clarkson, T. D. Pennington, L. Chatrou   +3 more
semanticscholar   +1 more source

The role of circular RNAs in regulating cytokine signaling in cancer

FEBS Open Bio, EarlyView.
Cytokines present in the tumor microenvironment fuel cancer development. Aberrant expression of circRNAs contributes to cancer progression. Cytokines are involved in regulating circRNA biogenesis. Furthermore, aberrantly expressed circRNAs regulate the expression of ligands, receptors, and downstream effectors involved in cytokine signaling to promote ...
Vandana Joshi, Swati, Amit Mishra, Amaresh Panda, Vivek Sharma   +4 more
wiley   +1 more source

Dose metrology: TLD/OSL dose accuracy and energy response performance

Nuclear Engineering and Technology, 2023
An essential step in evaluating and comparing the performance of two passive radiation dosimeter types, thermosluminescent (TLD) and optically stimulated luminescence (OSL), used by workers in environments with ionizing radiation for individual ...
Omaima Essaad Belhaj, Hamid Boukhal, El Mahjoub Chakir, Meryeme Bellahsaouia, Siham Belhaj, Younes Sadeq, Mohammed Tazi, Tahar El Khoukhi, Maryam Hadouachi, Khaoula Laazouzi   +9 more
doaj  

Potential approaches to the spectroscopic characterization of high performance polymers exposed to energetic protons and heavy ions [PDF]

A potential limitation to human activity on the lunar surface or in deep space is the exposure of the crew to unacceptably high levels of penetrating space radiations.
Suleman, Naushadalli K.
core   +1 more source