Results 131 to 140 of about 308,461 (247)

Benjamín Thomson, Count Rumford

Revista CENIC Ciencias Químicas, 2016
Benjamin Thomson, Count Rumford (1752-1814), was a self-educated scientist, military man, and political economist, living during the turbulent period of the American Revolution and the European Wars of the 18th and 19th centuries. He carried on important
Jaime Wisniak
doaj  

Counterbalancing O‐GlcNAcylation and STAT3 Phosphorylation in Ventral Tegmental Area Dopaminergic Neurons Mediates Behavioral Adaptations to Acute Restraint Stress

Advanced Science, Volume 12, Issue 39, October 20, 2025.
Acute restraint stress enhances STAT3Ser727 phosphorylation in dopaminergic neurons in mice. This modification promotes the upregulation of GABBR2 and GABRB3, reduces neuronal activity, and contributes to anxiety‐like behavior and diminished reward‐seeking following stress exposure.
Mingshuo Shao, Yi Wu, Haiyang Wang, Chenchun Zhang, Ying Zhu, Yan Jiang, Changyou Jiang, Qiumin Le, Xing Liu, Lan Ma, Feifei Wang   +10 more
wiley   +1 more source

Optical photometry of Sco X-2

Astronomy & Astrophysics, 1997
We present optical photometry of the galactic bulge low-mass X-ray binary GX 349+2 (Sco X-2) obtained in July 1993 and March 1996. Short-term variations up to one magnitude are present on time scales of a few hours, which are related to the known X-ray behaviour of the source.
Barziv, O., Kuulkers, E., Méndez, R.M., van der Hooft, F., Groot, P.J., van der Klis, M., Kemper, C., van Paradijs, J.A.   +7 more
openaire   +2 more sources

Optical and infrared surface photometry of NGC 3077

The Astrophysical Journal, 1989
Photoelectric U, B, and V, photovoltaic K, and four-filter CCD surface photometry of the small, M81-linked Irr II galaxy NGC 3077 are reported. The observations are compared with data from previous studies, and the mass, density, and optical depth ratios are determined for a prominent dust cloud near the center of the galaxy.
Jill S. Price, Craig A. Gullixson
openaire   +2 more sources

The PLATO End-to-End CCD Simulator -- Modelling space-based ultra-high precision CCD photometry for the assessment study of the PLATO Mission

, 2010
The PLATO satellite mission project is a next generation ESA Cosmic Vision satellite project dedicated to the detection of exo-planets and to asteroseismology of their host-stars using ultra-high precision photometry.
Aerts, C., Arentoft, T., Catala, C., De Ridder, J., Kjeldsen, H., Salmon, S., Zima, W.   +6 more
core   +1 more source

Detection of the Sgr A* activity at 3.8 and 4.8 microns with NACO

, 2004
L'-band (lambda=3.8 microns) and M'-band (lambda=4.8 microns) observations of the Galactic Center region, performed in 2003 at VLT (ESO) with the adaptive optics imager NACO, have lead to the detection of an infrared counterpart of the radio source Sgr A*
Balick, Blum, Bower, Clénet, Clénet, Cuadra, D. Gratadour, D. Rouan, DePoy, Diolaiti, E. Gendron, Eisenhauer, F. Lacombe, Forrest, Genzel, Genzel, Ghez, Ghez, Lenzen, Markoff, Moneti, Nayakshin, Ott, P. Léna, R. Genzel, R. Schödel, Reid, Rousset, Schödel, Simons, T. Ott, Tollestrup, Y. Clénet, Yuan, Yuan, Yuan   +35 more
core   +1 more source

Parvalbumin Interneuron‐Dependent Hippocampal Neurogenesis Evoked by Prolonged Rhythmic Light Flicker

Advanced Science, Volume 12, Issue 37, October 6, 2025.
This study demonstrates that prolonged rhythmic 40 Hz light flicker enhances spatial learning by stimulating PV interneuron‐dependent neurogenesis. The light flicker selectively activates PV interneurons, which enhances GABAergic support for the integration of immature neurons in the adult dentate gyrus.
Hai Yan, Yunxuan Wang, Xufan Deng, Shiyu Wu, Yifan Pan, Jun Du, Mei Yu, Bo Liu, Huimei Wang, Zhengyu Zhang, Jinghong Chen, Shuifa Chen, Yizheng Wang, Tara Walker, Perry Bartlett, Jun Ju, Sheng‐Tao Hou   +16 more
wiley   +1 more source

Adaptive Optics Discovery of Supernova 2004ip in the Nuclear Regions of the Luminous Infrared Galaxy IRAS 18293-3413

, 2007
We report a supernova discovery in Ks-band images from the NAOS CONICA adaptive optics (AO) system on the ESO Very Large Telescope (VLT). The images were obtained as part of a near-infrared search for highly-obscured supernovae in the nuclear regions of ...
A. Efstathiou, C. Fransson, Cappellaro E., D. Farrah, G. Östlin, J. Sollerman, P. Lira, P. Lundqvist, P. Väisänen, Risaliti G., S. Mattila, S. Ryder, T. Dahlen, W. P. S. Meikle   +13 more
core   +2 more sources

Comparison Between Portable and Bench‐Top Near‐Infrared Spectroscopy for Corn Silage Characterization Using Partial Least Square and Support Vector Regression Methods

Journal of Chemometrics, Volume 39, Issue 10, October 2025.
ABSTRACT In this work, bench‐top and portable near‐infrared (NIR) spectroscopy equipment are compared in the context of generating predictive models for the quantification of phosphorus (P), potassium (K), and nitrogen (N) components from corn silage samples.
Jefferson Tales Oliva, Vinicius Herique Kieling, Felipe Augusto Bueno Rossi, Erick Oliveira Rodrigues, Giovanni Alfredo Guarneri, Larissa Macedo dos Santos Tonial   +5 more
wiley   +1 more source

Optical Photometry and the Continuum of Active Galactic Nuclei

The Astrophysical Journal, 2002
In this paper, the continuum emission of active galactic nuclei is studied using broadband B, V, R, and I photometry. The nuclear contribution is estimated from the observations using two different approaches. In the first one, the images are deconvolved by the seeing profile and the corrected images are used to derive the nuclear contribution.
Ronaldo Eustáquio de Souza, Ronaldo Eustáquio de Souza, Sueli M. Viegas, Ruth Gruenwald   +3 more
openaire   +2 more sources