Results 81 to 90 of about 6,922,156 (258)

Robust Spectroscopic Analysis Through Image‐Based Spectral Representation and Deep Learning Techniques

Journal of Raman Spectroscopy, EarlyView.
This study addresses calibration drift in Raman spectroscopy by transforming 1D spectra into 2D spider plot images processed by pretrained convolutional neural networks. This visualization strategy effectively converts detrimental spectral wavenumber shifts into simple image rotations, allowing the deep learning model to maintain high classification ...
Azadeh Mokari, Oleg Ryabchykov, Thomas Bocklitz   +2 more
wiley   +1 more source

A NEW MAXIMUM-LIKELIHOOD TECHNIQUE FOR RECONSTRUCTING COSMIC-RAY ANISOTROPY AT ALL ANGULAR SCALES [PDF]

The Astrophysical Journal, 2016
ABSTRACT The arrival directions of TeV–PeV cosmic rays show weak but significant anisotropies with relative intensities at the level of one per mille. Due to the smallness of the anisotropies, quantitative studies require careful disentanglement of detector effects from the observation.
M. Ahlers, S. Y. BenZvi, P. Desiati, J. C. Díaz–Vélez, D. W. Fiorino, S. Westerhoff   +5 more
openaire   +2 more sources

Cis–Trans Rotational Isomerism of Formic Acid, Sulfur, and Selenium Analogues and Their Dimers: Chemical Kinetics Under Interstellar Conditions

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT We present chemical kinetic rate constants for the cis to trans isomerisation or rotamerization of monomeric seleno‐, thio‐, and formic acids and that of three of their dimeric species, based on variational transition state theory and multidimensional tunneling calculations in the gas‐phase, from 10 K to 300 K. These provide, firstly, reliable
Judith Wurmel, John M. Simmie
wiley   +1 more source

Zero‐Dimensional Perovskite‐Inspired Scintillator‐Based High‐Radiation‐Resistant Radionuclide Analyzer Free From Irreversible Degradation

Laser &Photonics Reviews, EarlyView.
A zero‐dimensional perovskite‐inspired scintillator (Cs3Cu2I5) is developed as a high‐radiation‐resilient radionuclide analyzer capable of operating under extreme γ‐ray environments. Even after 200 kGy irradiation, the device fully restores its original spectroscopic performance through simple thermal annealing, demonstrating intrinsic defect ...
Jiwon Seo, Seungho Song, Youngjoo Park, Dakyoung Lee, Sang Hyun Nam, Chanho Kim, Young‐Hoon Kim, Kisung Lee, Beomjun Park, Jung‐Yeol Yeom   +9 more
wiley   +1 more source

Accounting for changing snow over 10 years of IceTop, and its impact on the all-particle cosmic ray spectrum

The IceTop surface detector of the IceCube Neutrino Observatory measures extensive air showers (EAS). Coincident signals in both tanks of an IceTop station result primarily from the electromagnetic component of the EAS, and events which trigger at least ...
Basu, V., Abbasi, R., Adams, J., Alameddine, J.M., Amin, N.M., Bai, X., Deoskar, Kunal,, Hidvegi, Attila,, Hultqvist, Klas,, Ahlers, M., Walck, Christian,, Bay, R., Schlüter, Felix, Agarwalla, S.K., Argüelles, C., Balagopal, A.V., Anton, G., Baricevic, M., Barwick, S.W., Toscano, Simona, Ashida, Y., Ackermann, M., Abbasi, Rasha, Axani, S.N., Rawlins, K., Finley, Chad,, Jansson, Matti,, Andeen, K., Zimmerman, M., Athanasiadou, S., Aguilar, J.A., et al.   +31 more
core   +1 more source

TeV gamma-ray emission from accreting binary pulsars [PDF]

, 1990
The high-mass X-ray binary SMC X-1 has been observed during the interval 1986-1989 at a threshold γ-ray energy of 0.4 TeV using the University of Durham Mark III air Cerenkov telescope at Narrabri.
Mannings, Vincent, Mannings, V
core  

Increasing urban flash flood risk attributable to both climate and development

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A new event impact attribution methodology that combines convection‐permitting climate model data with flood inundation modelling was used for a five‐hour flash‐flooding event in the suburbs of Leeds in 2014. The results show increased urban flood extent due to both climate change (+16%) and increased urbanisation (+29%).
Daniel F. Cotterill, Dann Mitchell, Peter A. Stott, Paul Bates, Youtong Rong, Leanne Archer   +5 more
wiley   +1 more source

Enhancing the capability through Recycling: Doubling the World's Largest Muon Telescope with almost-buried Iron tubes

Zaštita Materijala
The GRAPES-3 experiment, housing the world's largest muon telescope at 2200 m above sea level in Ooty, is designed to study cosmic-ray effects on Earth.
Pranaba Kumar Nayak, Muthiah Muthuvinayagam, Shashikant Raichand Dugad, Sunil Kumar Gupta, Balakrishnan Hariharan, Paranjothi Jagadeesan, Atul Jain, Pravata Kumar Mohanty, Mohamed Rameez, Kaviti Ramesh, Yoshio Hayashi, Saburo Kawakami, Akitoshi Oshima   +12 more
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Search for the Prompt Atmospheric Neutrino Flux in IceCube

For about a decade the IceCube Neutrino Observatory has been observing a high-energy diffuse astrophysical neutrino flux. At these energies, an important source of background are the prompt atmospheric neutrinos produced in decays of charmed mesons that ...
Basu, V., Abbasi, R., Adams, J., Alameddine, J.M., Amin, N.M., Bai, X., Deoskar, Kunal,, Hidvegi, Attila,, Hultqvist, Klas,, Ahlers, M., Walck, Christian,, Bay, R., Schlüter, Felix, Chau, Thien Nhan, Agarwalla, S.K., Argüelles, C., Balagopal, A.V., Anton, G., Baricevic, M., Barwick, S.W., Toscano, Simona, Ashida, Y., Ackermann, M., Abbasi, Rasha, Axani, S.N., Maris, Ioana Codrina, Böttcher, J., Finley, Chad,, Aguilar Sanchez, Juan Antonio, Jansson, Matti,, Andeen, K., Zimmerman, M., Athanasiadou, S., Aguilar, J.A., et al.   +34 more
core   +1 more source