Results 71 to 80 of about 8,121 (248)

Potential Effect of Mycorrhizal Inoculation, Fulvic Acid and Potassium Silicate on the Activity of Enzymatic Antioxidants and Nutritional Status of Wheat Grown Under Drought Conditions [PDF]

Journal of Plant Production
Given the importance of wheat as a strategic crop and the increasing threats posed by water scarcity, this study aims to evaluate the effects of mycorrhizal inoculation, fulvic acid and potassium silicate on the activity of enzymatic antioxidants in ...
M. Abdel-Moneam, S. Seadh, M. El-Sherpiny, H. Hafez   +3 more
doaj   +1 more source

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source

A First Taste of MEAD (Measuring Extinction and Abundances of Dust). I. Diffuse Milky Way Interstellar Dust Extinction Features in JWST Infrared Spectra

The Astronomical Journal
We present the initial results of the Measuring Extinction and Abundances of Dust project, with a focus on the dust extinction features observed in our JWST near- and mid-infrared spectra of nine diffuse Milky Way sightlines (1.2 ≤ A ( V ) ≤ 2.5).
Marjorie Decleir, Karl D. Gordon, Karl A. Misselt, Burcu Günay, Julia Roman-Duval, Sascha T. Zeegers   +5 more
doaj   +1 more source

Grain-boundary enrichment of iron on magnesium silicate perovskite

European Journal of Mineralogy, 2007
We present a combined experimental and numerical simulations study of grain boundaries in (Fe, Mg)SiO3 perovskite. TEM observations of grain boundaries in a well equilibrated perovskite sample consistently show small but significant enrichments of Fe. This result is in good agreement with classical potentials simulations of grain boundary structures in
David P. Dobson, Maria Alfredson, Christian Holzapfel, John P. Brodholt   +3 more
openaire   +1 more source

Advances and Challenges in Functional Abrasive Design for Chemical Mechanical Polishing of Semiconductors and in Optical Manufacturing

Interdisciplinary Materials, EarlyView.
This review summarizes recent advances in chemical mechanical polishing abrasives based on CeO2, SiO2, Al2O3, and emerging nanomaterials, highlighting how structural engineering and interfacial chemistry govern material removal and surface quality. Mechanism‐driven abrasive design is identified as a key pathway toward high selectivity, low damage, and ...
Wenqi Tang, Zean Teng, Fang Luo, Xinlong Zhang, Biao Ran, Yonghong Qin, Jiyi Zhu, Yatao Cui, Xuezi Tan, Zihan Xu, Chaopeng Fu, Jiao Zhang   +11 more
wiley   +1 more source

Landsat-8 data for chromite prospecting in the Logar Massif, Afghanistan

Heliyon, 2018
Chromite is widely distributed in the east and southeast of Afghanistan, especially in Logar Province. Chromite mineralization is podiform-type and is hosted in the stratigraphically lowest ultramafic rocks of the Logar Ophiolite Complex.
Ramadan Abdelaziz, Yasser Abd El-Rahman, Sophie Wilhelm   +2 more
doaj   +1 more source

Soil Silicon Application Alleviates Drought Stress in Sugar Beet (Beta vulgaris L.)

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background: The increasing frequency and intensity of drought events have led to yield and quality losses in sugar beet production in temperate regions in Central Europe. Under arid conditions, silicon (Si) application reduced beet yield losses under drought. Similar data for temperate climates are missing.
Tabea Selzer, Gereon Heller, Dietmar Horn, Thomas Hetterich, Jan Kessler, Jakob Santner   +5 more
wiley   +1 more source

On the Active Sites of Mg-bearing Interstellar Dust Grains: An Experimental and Theoretical Model Study of CO2 Activation

The Astrophysical Journal
Magnesium silicates represent an important component of interstellar dust. While the formation of molecules in the interstellar region is typically thought to take place in icy mantles covering such dust particles, the bare uncovered grains are hardly ...
Sandra M. Lang, Thorsten M. Bernhardt, Joost M. Bakker   +2 more
doaj   +1 more source

Modeling the Astronomical Silicate Mineralogy: On the Effects of Grain Temperature

The Astrophysical Journal, 2004
The mineralogical composition of dust contains important information regarding the origin and processing of the dust and the physical, chemical, and evolutionary properties of the astrophysical environment where the dust is found. In the literature, the composition of cosmic dust is usually inferred by fitting the observed infrared (IR) emission ...
Moping Li, Gang Zhao, Aigen Li
openaire   +1 more source

Farming in the shadows of Rome: A multi‐proxy palaeoenvironmental record from Loch Clunie—Perthshire

Journal of Quaternary Science, EarlyView.
ABSTRACT Roman impacts on local society is a subject of international significance. Loch Clunie, Perthshire, lies only 5.4 km from Inchtuthil, the only Roman legionary fortress in Scotland, and contains two crannogs and a probable lakeside hillfort. Despite this proximity and the likelihood of local–Roman interaction, these sites remain unexcavated ...
Samantha E. Jones, Maarten Blaauw, Fraser Hunter, Olalla López‐Costas, Antonio Martínez Cortizas, Tim M. Mighall, Gordon Noble   +6 more
wiley   +1 more source