Results 81 to 90 of about 3,076,442 (185)

Assessing corn response to sulfur fertilization in Kansas: Efficiency, optimum rate, and diagnostic tools

Agronomy Journal, Volume 118, Issue 2, March/April 2026.
Abstract Corn (Zea mays L.) response to sulfur (S) fertilizations remains difficult to assess due to the dynamic nature of S availability. This study evaluated corn response and diagnostic tools across 30 field sites in Kansas (Experiment 1; with and without S) and in complementary rate trials at two sites (Experiment 2; multiple S rates). Measurements
Gustavo A. Roa, Dorivar A. Ruiz Diaz
wiley   +1 more source

An Empirical Extinction Curve Revealed by Gaia XP Spectra and LAMOST

The Astrophysical Journal
We present a direct measurement of extinction curves using corrected Gaia XP spectra of the common sources in Gaia DR3 and LAMOST DR7. Our analysis of approximately 370,000 high-quality samples yielded a high-precision average extinction curve for the ...
Ruoyi Zhang, Haibo Yuan, Bowen Huang, Tao Wang, Lin Yang, Gregory M. Green, Xiangyu Zhang   +6 more
doaj   +1 more source

The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°$$ {6}^{{}^{\circ}} $$‐wide stripe in the southern Galactic disk with simultaneous observations in r′$$ {r}^{\prime } $$ and i′$$ {i}^{\prime } $$ (7m≲r′,i′≲18m$$ {7}^{\mathrm{m}}\lesssim {r}^{\prime },{i}^{\prime}\lesssim {18}^{\mathrm{m}} $$) from September ...
Julia Blex, Moritz Hackstein, Christian Westhues, Michael Ramolla, Markus Demleitner, Dominik J. Bomans, Kerstin Weis, Christofer Fein, Rolf Chini   +8 more
wiley   +1 more source

Observational Evidence of Dust Evolution in Supernova Remnants: Size Redistribution toward Larger Grains in the Early Sedov Phase

The Astrophysical Journal Letters
Recent observations have revealed that dust is widespread and abundant in galaxies up to z  ≃ 8, significantly influencing their appearance and spectral properties.
He Zhao, Bingqiu Chen, Jun Li
doaj   +1 more source

A photometric investigation of the young open cluster Trumpler 15 [PDF]

, 2001
In this paper we present and analyze new CCD $UBVRI$ photometry down to $V\approx$21 in the region of the young open cluster Trumpler~15, located in the Carina spiral feature.
Cardelli, Carraro, Carraro, Cudworth, D'Antona, DeGioia-Eastwood, Feinstein, Feinstein, Feinstein, Giorgi, Giovanni Carraro, Girardi, Grubissich, Johnson, Johnson, Levato, Mermilliod, Morbidelli, Morrell, Newell, Patat, Patriarchi, Rachford, Rieke, Salpeter, Scalo, Schmidt-Kaler, Smith, Tapia, Thé, Thé, Wegner, Whittet, Yadav   +33 more
core   +3 more sources

Critical Slowing Down Reveals Hydrologic Resilience Loss Across Amazon Sub‐Basins

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract The Amazon's hydroclimate exhibits basin‐scale early‐warning signals of critical slowing down (CSD), a statistical signature of declining resilience as systems approach critical transitions. We apply a multi‐metric framework to precipitation, evapotranspiration, Soil moisture (SM), and extreme streamflows, tracking rolling variance, lag‐1 ...
Germán Poveda
wiley   +1 more source

Data-driven Stellar Intrinsic Colors and Dust Reddenings for Spectrophotometric Data: From the Blue-edge Method to a Machine Learning Approach

The Astrophysical Journal
Intrinsic colors (ICs) of stars are essential for studies on both stellar physics and dust reddening. In this work, we developed an XGBoost model to predict ICs with the atmospheric parameters T _eff , ${\rm{log}}\,g$ , and [M/H].
He Zhao, Shu Wang, Biwei Jiang, Jun Li, Dongwei Fan, Yi Ren, Xiaoxiao Ma   +6 more
doaj   +1 more source

The Optical - Infrared Colors of CORALS QSOs: Searching for Dust Reddening Associated With High Redshift Damped Lyman Alpha Systems

, 2005
The presence of dust in quasar absorbers, such as damped Lyman alpha (DLA) systems, may cause the background QSO to appear reddened. We investigate the extent of this potential reddening by comparing the optical-to-infrared (IR) colors of QSOs with and ...
Bouchet P., Drinkwater M., Ellison S. L., Patrick B. Hall, Paulina Lira, Rawlings S., Sara L. Ellison, Serlemitsos P., Toft S., Wild V.   +9 more
core   +3 more sources

Question the Mark: A Review and Assessment of Bat Marking Practices

Mammal Review, Volume 56, Issue 1, March 2026.
We reviewed a decade of research on bats and conducted a broader systematic review to assess the nature of bat marking practices and the effects and efficacy of marks. Effects of marks on bats, mark details and marking procedures are rarely reported and further research on the effects of marks on bats and more thorough reporting are needed.
Susan C. Loeb, Joy M. O'Keefe, Robert M. R. Barclay, Alyssa B. Bennett, Ashleigh B. Cable, Sarah M. Gaulke, Fernando Gual‐Suárez, Vona Kuczynska, Cori L. Lausen, Samara Pérez‐Harp, Bradford J. Westrich   +10 more
wiley   +1 more source

The Flattest Infrared Extinction Curve in Four Isolated Dense Molecular Cloud Cores

The Astrophysical Journal Letters
The extinction curve of interstellar dust in the dense molecular cloud cores is crucial for understanding dust properties, particularly size distribution and composition.
Jun Li, Bingqiu Chen, Biwei Jiang, He Zhao, Botao Jiang, Xi Chen   +5 more
doaj   +1 more source