Results 101 to 110 of about 2,859,006 (301)

Near-Infrared-Spectroscopy with Extremely Large Telescopes: Integral-Field- versus Multi-Object-Instruments [PDF]

, 2000
Integral-field-spectroscopy and multi-object-spectroscopy provide the high multiplex gain required for efficient use of the upcoming generation of extremely large telescopes. We present instrument developments and designs for both concepts, and how these
Eisenhauer, F., Genzel, R., Hofmann, R., Mengel, S., Tecza, M., Thatte, N.   +5 more
core   +1 more source

The proton radius puzzle

, 2017
High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-proton scattering and hydrogen spectroscopy. The status of this discrepancy,
Ahmed, M. Abdou, Amaro, F. D., Amaro, P., Antognini, A., Bigot, E. -O. Le, Biraben, F., Cardoso, J. M. R., Carvalho, M. L., Covita, D. S., Dax, A., Dhawan, S., Diepold, M., Fernandes, L. M. P., Franke, B., Galtier, S., Giesen, A., Gouvea, A. L., Graf, T., Guerra, M., Götzfried, J., Haack, J., Hildebrandt, M., Hänsch, T. W., Indelicato, P., Julien, L., Kirch, K., Knecht, A., Knowles, P., Kottmann, F., Krauth, J. J., Liu, Y. -W., Lopes, J. A. M., Ludhova, L., Machado, J., Monteiro, C. M. B., Mulhauser, F., Nebel, T., Nez, F., Pohl, R., Rabinowitz, P., Rapisarda, E., Santos, J. M. F. dos, Santos, J. P., Schaller, L. A., Schuhmann, K., Schwob, C., Szabo, C. I., Taqqu, D., Veloso, J. F. C. A., Voss, A., Weichelt, B., Willig, M.   +51 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

In situ and real-time ultrafast spectroscopy of photoinduced reactions in perovskite nanomaterials

Nature Communications
By employing two synchronized mode-locked femtosecond lasers and interferometric detection of the pump-probe spectra—referred to as asynchronous and interferometric transient absorption—we have developed a method for broad dynamic range and rapid data ...
Gi Rim Han, Mai Ngoc An, Hyunmin Jang, Noh Soo Han, JunWoo Kim, Kwang Seob Jeong, Tai Hyun Yoon, Minhaeng Cho   +7 more
doaj   +1 more source

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

FEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li, Xi Xiao, Lingbin Qi, Chanyi Li, Sirui Song, Jiaying Qin, Zhigang Xue, Jinfeng Xue, Huaifang Li   +8 more
wiley   +1 more source

Diquarks and Exotic Spectroscopy

, 2003
We propose that the recently discovered \Theta baryon is a bound state of four quarks and an antiquark, containing two highly correlated ud-pairs. If so, the \Theta baryon has positive parity, and it lies in an near-ideally mixed SU(3)_{f} \mathbf{\bar ...
Frank Wilczek, G. S. Adkins, H. Weigel, H. J. Lipkin, M. Chemtob, M. Praszalowicz, M. G. Alford, R. L. Jaffe, Robert Jaffe, V. V. Barmin, V. V. Barmin   +10 more
core   +1 more source

Meta‐analysis fails to show any correlation between protein abundance and ubiquitination changes

FEBS Open Bio, EarlyView.
We analyzed over 50 published proteomics datasets to explore the relationship between protein levels and ubiquitination changes across multiple experimental conditions and biological systems. Although ubiquitination is often associated with protein degradation, our analysis shows that changes in ubiquitination do not globally correlate with changes in ...
Nerea Osinalde, Unai Alduntzin, Gorka Prieto, Ugo Mayor   +3 more
wiley   +1 more source

Kinetic selectivity in metal-organic framework chemical sensors

Nature Communications
Selective detection of specific volatile organic compounds (VOCs) is crucial for health, safety, and environmental applications, but current sensors suffer from poor selectivity and struggle to measure specific VOCs in the presence of interfering ...
Aleksander Matavž, Margot F. K. Verstreken, Leen Boullart, Max L. Tietze, Masaya Sugihara, Lars Heinke, Rob Ameloot   +6 more
doaj   +1 more source

Temperature Dependences of Single Dye-Molecules Zero-Phonon Line Widths in a Broad Range of Low Temperatures

EPJ Web of Conferences, 2015
In the present work the individual temperature dependences of zero-phonon spectral line widths of single tetra-tert-butylterrylene dye-molecules in polyisobutylene were measured in a broad range of low temperatures (from 20 K up to 67 K).
Eremchev I. Yu., Gorshelev A.A., Karimullin K.R., Naumov A.V.   +3 more
doaj   +1 more source

Charm and Charmonium Spectroscopy

, 2006
Recent experimental results in charm and charmonium spectroscopy are reviewed.Comment: 4 pages, contributed to the Proceedings of BEACH 2006, Lancater ...
Abashian, Abazov, Abe, Abe, Abe, Abe, Acosta, Adam, Artuso, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, Aubert, B.Aa. Petersen, Barnes, Besson, Beveren, Braaten, Choi, Coan, Colangelo, Di Pierro, Evdokimov, Godfrey, Kravchenko, Maiani, Mattson, Ocherashvili, Ratti, Savage, Swanson, Törnqvist, Yabsley, Yao, Zhu   +43 more
core   +1 more source