Results 61 to 70 of about 40,039,274 (254)

Reconstructing inflation in scalar-torsion $$f(T,\phi )$$ f ( T , ϕ ) gravity

European Physical Journal C: Particles and Fields, 2021
It is investigated the reconstruction during the slow-roll inflation in the most general class of scalar-torsion theories whose Lagrangian density is an arbitrary function $$f(T,\phi )$$ f ( T , ϕ ) of the torsion scalar T of teleparallel gravity and the
Manuel Gonzalez-Espinoza, Ramón Herrera, Giovanni Otalora, Joel Saavedra   +3 more
doaj   +1 more source

Going viral − Virus‐targeting nanobodies for research, diagnostics and therapy

FEBS Letters, EarlyView.
The increasing prevalence of viral diseases represents a major threat for global human health. Nanobodies, small binding fragments derived from camelid heavy‐chain antibodies, offer versatile tools for viral research, diagnostics, and antiviral therapy.
Domenic Ebert, Ulrich Rothbauer
wiley   +1 more source

Cavity-Induced Optical Nonreciprocity Based on Degenerate Two-Level Atoms

Nanomaterials
We developed and experimentally realized a scheme of optical nonreciprocity (ONR) by using degenerate two-level atoms embedded in an optical ring cavity.
Chuan-Zhao Qi, Jia-Rui Zheng, Yuan-Hang Tong, Ruo-Nan Li, Dan Wang, Liang-Hui Huang, Hai-Tao Zhou   +6 more
doaj   +1 more source

Soft motions encoded by the fold and mediated by conserved hinge sites drive V‐ATPase allosteric machinery and autoinhibition

FEBS Letters, EarlyView.
Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana, Xiaowei Bogetti, Stuti Sharma, Ivet Bahar   +3 more
wiley   +1 more source

Unitarity implications of $\tilde{F}_{μν}$ and $F_{μν}$ models with LIV in $e^{+}e^{-} \rightarrow μ^{+}μ^{-}$ [PDF]

We studied two different models that included LIV coupling in the scattering processes of \( e^+e^- \rightarrow \mu^+\mu^-\). We found that using the model with the dual electromagnetic tensor \( \tilde{F}_{\mu\nu} \) resulted in violations of unitarity ...
Santos, Adriano M., Celeste, Alessio T. B.   +1 more
core   +4 more sources

Sources of the high latitude ionosphere variability during winter nighttime

Journal of Space Weather and Space Climate
Solar wind energy is continuously deposited in the magnetosphere-ionosphere-thermosphere system, causing significant modifications primarily in the high latitude ionosphere.
Iochem Pelin, Borries Claudia, Tasnim Samira, Wissing Jan Maik, Kusche Jürgen, Aikio Anita, Cai Lei, Virtanen Ilkka, Ellahouny Nada   +8 more
doaj   +1 more source

First Lidar Profiling of Meteoric Ca+ Ion Transport From ∼80 to 300 km in the Midlatitude Nighttime Ionosphere

Geophysical Research Letters, 2022
We report a world record of lidar profiling of metallic Ca+ ions up to 300 km in the midlatitude nighttime ionosphere during geomagnetic quiet time.
Jing Jiao, Xinzhao Chu, Han Jin, Zelong Wang, Yuchang Xun, Lifang Du, Haoran Zheng, Fuju Wu, Jiyao Xu, Wei Yuan, Chunxiao Yan, Jihong Wang, Guotao Yang   +12 more
doaj   +1 more source

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

Molecular 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

Library of SM and anomalous $WW\gamma$ couplings for the $e^{+}e^{-}\rightarrow f\overline{f} n\gamma$ Monte Carlo programs

, 1999
A brief description of the library of the Standard Model and anomalous WWgamma coupling contribution to the matrix element for e+e- -> \nu \bar{\nu} -> f \bar f n\gamma processes.
J. Kalinowski, Kalinowski, J., A. Jacholkowska, Jacholkowska, A., Was, Z., Z. Wa̧s   +5 more
core   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source