Results 71 to 80 of about 364,262 (268)

Temperature‐Tunable Cholesteric Liquid Crystal Optical Combiners for Extended Reality Applications

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Recent advancements in extended reality highlight their potential to enhance traditional displays like liquid crystal displays and organic light‐emitting diode screens. This article introduces an innovative cholesteric liquid crystal‐based optical combiner for head‐mounted displays, enabling seamless transitions between augmented reality, virtual ...
Yuanjie Xia, Haobo Li, Marija Vaskeviciute, Daniele Faccio, Affar S. Karimullah, Hadi Heidari, Rami Ghannam   +6 more
wiley   +1 more source

The Leakage of Lyman-continuum Photons from a Major Merger at z ∼ 1

The Astrophysical Journal
We report the detection of Lyman-continuum (LyC) photons from a massive interacting system at z = 1.097 in the Hubble Ultra Deep Field. The LyC detection is made in the far-ultraviolet F154W band of the UVIT telescope on board AstroSat.
Soumil Maulick, Kanak Saha, Manish Kataria, Edmund Christian Herenz   +3 more
doaj   +1 more source

Assessment of In Vitro Nano‐Cytotoxicity Through Fluorescence Microscopy via Neural Network‐Based Live/Dead Cell Classification

Advanced Intelligent Systems, EarlyView.
FluoAI is a two‐stage, label‐free method for quantifying nanomaterial‐induced cytotoxicity from conventional fluorescence microscopy images. Mask R‐CNN segmentation and DenseNet‐121 classification provide rapid live/dead classification matching human accuracy.
Ugur C. Topkiran, Ali Gasimli, Lal Durmaz, Diya Vashani, Himish Paul, Giridhar R. Akkaraju, Anton V. Naumov   +6 more
wiley   +1 more source

Toward a 2D H I Map of the Local Interstellar Medium

The Astronomical Journal
Obtaining a complete census of gas in the local interstellar medium (LISM;
Allison Youngblood, Kevin France, Tommi Koskinen, James Paul Mason, Seth Redfield, Brian E. Wood, Vincent Bourrier, Leonardo dos Santos, Christopher Johns-Krull, George W. King, Jeffrey L. Linsky, Sarah Peacock   +11 more
doaj   +1 more source

Scientific problems addressed by the Spektr-UV space project (world space Observatory—Ultraviolet) [PDF]

, 2016
The article presents a review of scientific problems and methods of ultraviolet astronomy, focusing on perspective scientific problems (directions) whose solution requires UV space observatories.
Ayres, T., Kanev, E. N., Sachkov, M. E.,, Ayres, T.,, Sachkov, M. E., L. Fossati, Sichevskii, S. G., Piskunov, Nikolai,, Fossati, L.,, Bisikalo, D. V.,, Wiebe, D. Z., Shchekinov, Yu. A.,, Werner, K.,, Mashonkina, L. I.,, Yu. A. Shchekinov, J.-C. Gérard, Fossati, Luca, A. A. Boyarchuk, Kanev, E. N.,, A. G. Zhilkin, Boyarchuk, A. A., Kil'pio, E. Yu.,, Strassmeier, K. G., Ustamuich, S.,, Kaigorodov, P. V.,, Bisikalo, D. V., Zwintz, S. K., T. Ayres, Lamzin, S. A., Sichevskii, S. G.,, P. V. Kaigorodov, Voshchinnikov, N. V.,, K. G. Strassmeier, Lamzin, S. A.,, M. E. Sachkov, A. I. Gomez de Castro, Chugai, N. N.,, Jeffrey, S., Ustamuich, S., S. Ustamuich, P. B. Ivanov, Hubert, B.,, B. Hubert, Mashonkina, L. I., Zwintz, S. K.,, D. Z. Wiebe, Zhilkin, A. G., S. A. Lamzin, Savanov, I. S., N. V. Voshchinnikov, Gomez de Castro, A. I.,, L. I. Mashonkina, I. S. Savanov, S. G. Sichevskii, Kil'pio, E. Yu., K. Werner, Shustov, B. M.,, Ryabchikova, T. A.,, Chugai, N. N., Wiebe, D. Z.,, D. Shulyak, D. V. Bisikalo, S. K. Zwintz, T. A. Ryabchikova, Boyarchuk, A. A.,, Ryabchikova, Tanya, Gomez de Castro, Ana I., Shematovich, V. I.,, Ivanov, P. B.,, N. Piskunov, Gerard, J. -C, Shulyak, D., Hubert, B., Lammer, H.,, E. N. Kanev, Savanov, I. S.,, Strassmeier, K. G.,, Piskunov, Nikolai E., B. M. Shustov, V. I. Shematovich, H. Lammer, Shustov, B. M., Lammer, H., Shematovich, V. I., Zhilkin, A. G.,, Ivanov, P. B., E. Yu. Kil’pio, S. Jeffrey, Voshchinnikov, N. V., Kaigorodov, P. V., Shulyak, D.,, Gerard, J.-C., N. N. Chugai, Werner, Katharina, Shchekinov, Yu. A., Jeffrey, S.,   +95 more
core   +1 more source

The Nova Synthetic Data Base: A Principal Component/AI Analysis of Novae Synoptic Spectra

The Astrophysical Journal Supplement Series
The Nova Synthetic Data Base (NSDB) is presented as the first publicly available database of synthetic spectra for classical nova shells, spanning an unprecedented range of physical parameters (e.g., ejecta mass, chemical composition, temperature, and ...
Bruno C. Santos, Marcos P. Diaz, Larissa Takeda   +2 more
doaj   +1 more source

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

A Data-driven Approach for Mitigating Dark Current Noise and Bad Pixels in Complementary Metal Oxide Semiconductor Cameras for Space-based Telescopes

The Astronomical Journal
In recent years, there has been a gradual increase in the performance of complementary metal oxide semiconductor (CMOS) cameras. These cameras have gained popularity as a viable alternative to charge-coupled device cameras in a wide range of applications.
Peng Jia, Chao Lv, Yushan Li, Yongyang Sun, Shu Niu, Zhuoxiao Wang   +5 more
doaj   +1 more source

The effects of atmosphere conditions on gamma-ray astronomy [PDF]

, 2005
The High Energetic Stereoscopic System (H.E.S.S.) experiment is an array of imaging atmospheric Cherenkov (IAC) telescopes of the next generation, with enlarged mirrors and advanced detector electronics compared to its predecessors.
Aye, Klaus-Michael
core  

The effect of the impact of comet Shoemaker Levy‐9 on Jupiter's aurorae [PDF]

, 1995
We present infrared spectra and images of the jovian aurorae taken at wavelengths sensitive to the H-3(+) molecular ion during the period around the impact of Comet Shoemaker Levy-9.
Tennyson, J., BAINES, K, Baines, K., JOSEPH, RD, BROOKE, TY, Dinelli, B. M., GEBALLE, TR, Lam, H. A., DINELLI, BM, Geballe, T. R., TRAFTON, LM, TENNYSON, J, JAGOD, MF, Miller, S., Brooke, T. Y., ACHILLEOS, N, Joseph, R. D., Orton, G., BALLESTER, GE, Trafton, L. M., MILLER, S, LAM, HA, ORTON, G, Jagod, M.‐f., Ballester, G. E., Achilleos, N.   +25 more
core   +1 more source