Results 121 to 130 of about 7,200,285 (346)

X-ray-frequency modulation via periodic switching of an external magnetic field

, 2018
Single x-ray photons can be resonantly scattered and stored with the help of suitable transitions in the atomic nucleus. Here, we investigate theoretically means of mechanical-free modulation for the frequency spectra of such x-ray photons via periodic ...
Gunst, Jonas, Kong, Xiangjin, Pálffy, Adriana, Ramien, Gregor   +3 more
core   +1 more source

Modeling hepatic fibrosis in TP53 knockout iPSC‐derived human liver organoids

Molecular Oncology, EarlyView.
This study developed iPSC‐derived human liver organoids with TP53 gene knockout to model human liver fibrosis. These organoids showed elevated myofibroblast activation, early disease markers, and advanced fibrotic hallmarks. The use of profibrotic differentiation medium further amplified the fibrotic signature seen in the organoids.
Mustafa Karabicici, Soheil Akbari, Ceyda Caliskan, Canan Celiker, Ozden Oz, Leman Binokay, Gökhan Karakulah, Serif Senturk, Esra Erdal   +8 more
wiley   +1 more source

Highly multimode memory in a crystal

, 2010
We experimentally demonstrate the storage of 1060 temporal modes onto a thulium-doped crystal using an atomic frequency comb (AFC). The comb covers 0.93 GHz defining the storage bandwidth.
Chanelière T, Clausen C Usmani I Bussieres F Sangouard N Afzelius M de Riedmatten H Gisin N, Farr W G Tay J W Ledingham P M Korystov D Longdell J J, Fox R, J-L Le Gouët, Liu G, M Bonarota, Nilsson M, Saglamyurek E Sinclair N Jin J Slater J A Oblak D Bussieres F George M Ricken R Sohler W Tittel W, T Chanelière   +9 more
core   +1 more source

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

Molecular Oncology, EarlyView.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak, Bodee Nutho, Worawat Wattanathana, Narumon Phaonakrop, Bunnatut Panasawatwong, Katharina Erlenbach‐Wuensch, Sittiruk Roytrakul, Regine Schneider‐Stock, Pithi Chanvorachote   +8 more
wiley   +1 more source

Optimum frequency modulation receivers [PDF]

Optimization of receivers for demodulating FM SIGNAL corrupted by Gaussian noise, and solution to maximum likelihood ...
Guida, A., Schilling, D. L.
core   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

Simulation study on the frequency modulation of sawtooth oscillation by plasma shape in tokamak

Nuclear Fusion
This study numerically investigates the impact of the tokamak plasma shape (elongation, triangularity, and aspect ratio) on the amplitude and period of sawtooth oscillations using the three-dimensional toroidal nonlinear magnetic fluid code CLT and the ...
Peijie Zhang, Jinhong Yang, Zhenzhen Ren, Zheng Xiao, Jiaxuan Chu, Jun Kuang, Weihua Wang   +6 more
doaj   +1 more source

Segmented discrete polynomial-phase transform with coprime sampling

The Journal of Engineering, 2019
Segmented discrete polynomial-phase transform (DPT) integrates input signals to enable detection and parameter estimation of weak linear frequency modulated (LFM) signals.
Shengheng Liu, Yahui Ma, Tao Shan
doaj   +1 more source

Modulation of transcriptional burst frequency by histone acetylation

Proceedings of the National Academy of Sciences of the United States of America, 2018
Significance Single-cell approaches have shown that many mammalian genes are transcribed stochastically in bursts of specific sizes and frequencies; however, molecular mechanisms controlling these bursting parameters have remained largely undetermined ...
Damien Nicolas, Benjamin Zoller, D. Suter, F. Naef   +3 more
semanticscholar   +1 more source

Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization

, 2017
Orthogonal frequency division multiplexing (OFDM) and single-carrier frequency domain equalization (SC-FDE) are two commonly adopted modulation schemes for frequency-selective channels. Compared to SC-FDE, OFDM generally achieves higher data rate, but at
Lie, Joni Polili, Yang, Yifei, Zhang, Rui, Zhang, Shuowen   +3 more
core   +1 more source