Results 51 to 60 of about 12,038,824 (373)

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Stability of initial-boundary value problem for quasilinear viscoelastic equations

Electronic Journal of Differential Equations, 2020
We investigate the stability of the initial-boundary value problem for the quasilinear viscoelastic equation $$\displaylines{ |u_t|^{\rho}u_{tt}-\Delta u_{tt}-\Delta u+\int_0^tg(t-s)\Delta u(s)ds=0, \quad \text{in }\Omega\times(0,+\infty),\cr u=0 ...
Kun-Peng Jin, Jin Liang, Ti-Jun Xiao
doaj  

Relaxation measurements in the regime of the second magnetization peak in Nb films

, 2004
We report on magnetic measurements as a function of field, temperature and time (relaxation) in superconducting Nb films of critical temperature Tc = 9.25 K.
Abulafia, Anderson, Anderson, Chowdhury, Chowdhury, D. Niarchos, D. Stamopoulos, Esquinazi, Finnemore, Giller, Giller, Gurevich, Janossy, Khaykovich, Kokkaliaris, Kopelevich, Kupfer, Mints, Mints, Miu, Pissas, Pissas, Stamopoulos, Stamopoulos, Stamopoulos, Stamopoulos, Sun, Sun, Swartz, Wipf, Wipf, Zhukov   +31 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Spin relaxation of conduction electrons in bulk III-V semiconductors

, 2001
Spin relaxation time of conduction electrons through the Elliot-Yafet, D'yakonov-Perel and Bir-Aronov-Pikus mechanisms is calculated theoretically for bulk GaAs, GaSb, InAs and InSb of both $n$- and $p$-type.
A. G. Aronov, A. H. Clark, A. H. Clark, A. Malinowski, D. D. Sell, D. DiVincenzo, D. L. Rode, D. L. Rode, E. Haga, G. Fishman, G. L. Bir, G. Prinz, H. Brooks, H. Ehrenreich, H. Ehrenreich, H. Ehrenreich, H. J. G. Meijer, J. Bardeen, J. D. Zook, J. M. Kikkawa, J. N. Chazalviel, J. T. Hyland, K. C. Hall, K. W. Kim, K. Zerrouati, L. Sham, M. I. D’yakonov, M. I. D’yakonov, M. Z. Maialle, M. Z. Maialle, M. Z. Maialle, P. P. Edwards, Pil Hun Song, R. I. Dzhioev, R. J. Elliot, T. F. Boggess, V. I. Maruschak, W. H. Lau, Y. Ohno   +38 more
core   +3 more sources

Adaptaquin is selectively toxic to glioma stem cells through disruption of iron and cholesterol metabolism

Molecular Oncology, EarlyView.
Adaptaquin selectively kills glioma stem cells while sparing differentiated brain cells. Transcriptomic and proteomic analyses show Adaptaquin disrupts iron and cholesterol homeostasis, with iron chelation amplifying cytotoxicity via cholesterol depletion, mitochondrial dysfunction, and elevated reactive oxygen species.
Adrien M. Vaquié, Davod R. Shah, Eliane E. S. Brechbühl, Michael McNicholas, Zhaoyang Xu, John H. Stockley, Laura Morcom, Diana Gold Diaz, Gemma C. Girdler, Rachel V. Seear, Gabriel Balmus, Rajiv R. Ratan, Harry Bulstrode, James A. Nathan, Manav Pathania, Kevin M. Brindle, David H. Rowitch   +16 more
wiley   +1 more source

The effect of age and initial compression on the force relaxation response of the femur in elderly women

Royal Society Open Science, 2022
The effect of force amount, age, body weight and bone mineral density (BMD) on the femur's force relaxation response was analysed for 12 donors (age: 56–91 years). BMD and fracture load, FL, were estimated from clinical CT images.
Saulo Martelli
doaj   +1 more source

Quasiparticle relaxation in optically excited high-Q superconducting resonators

, 2008
The quasiparticle relaxation time in superconducting films has been measured as a function of temperature using the response of the complex conductivity to photon flux.
J. J. A. Baselmans, J. N. Hovenier, J. R. Gao, M. Tinkham, R. Barends, S. J. C. Yates, T. M. Klapwijk   +6 more
core   +2 more sources

Lower semicontinuity and relaxation of nonlocal $$L^\infty $$-functionals [PDF]

Calculus of Variations and Partial Differential Equations, 2020
AbstractWe study variational problems involving nonlocal supremal functionals$$\begin{aligned} L^\infty (\Omega ;{\mathbb {R}}^m) \ni u\mapsto \mathrm{ess sup}_{(x,y)\in \Omega \times \Omega } W(u(x), u(y)), \end{aligned}$$L∞(Ω;Rm)∋u↦esssup(x,y)∈Ω×ΩW(u(x),u(y)),where$$\Omega \subset \mathbb {R}^n$$Ω⊂Rnis a bounded, open set and$$W:\mathbb {R}^m\times ...
Carolin Kreisbeck, Elvira Zappale
openaire   +7 more sources

Patient‐specific pharmacogenomics demonstrates xCT as predictive therapeutic target in colon cancer with possible implications in tumor connectivity

Molecular Oncology, EarlyView.
This study integrates transcriptomic profiling of matched tumor and healthy tissues from 32 colorectal cancer patients with functional validation in patient‐derived organoids, revealing dysregulated metabolic programs driven by overexpressed xCT (SLC7A11) and SLC3A2, identifying an oncogenic cystine/glutamate transporter signature linked to ...
Marco Strecker, Keren Zohar, Martin Böttcher, Thomas Wartmann, Henry Freudenstein, Maximilian Doelling, Mihailo Andric, Wenjie Shi, Or Kakhlon, Katrin Hippe, Beatrix Jahnke, Dimitrios Mougiakakos, Franziska Baenke, Daniel Stange, Roland S. Croner, Michal Linial, Ulf D. Kahlert   +16 more
wiley   +1 more source