Results 81 to 90 of about 574,356 (303)

Biochar as a strategy to manage stem rot disease of groundnut incited by Sclerotium rolfsii

open access: yesFrontiers in Agronomy
Due to the pathogen’s ability to survive in the soil for longer durations, soil-borne diseases are often difficult to control. This study investigates the multifaceted impacts of biochar on the management of stem rot disease in groundnut and its ...
Ramaraju Manasa   +14 more
doaj   +1 more source

Horizon Quantum Mechanics of collapsing shells [PDF]

open access: yes, 2018
We study the probability that a horizon appears when concentric shells of matter collide, by computing the horizon wave-function of the system. We mostly consider the collision of two ultra-relativistic shells, both shrinking and expanding, at the moment
Casadio, Roberto, Micu, Octavian
core   +2 more sources

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter   +5 more
wiley   +1 more source

Dynamic Response of Doubly-Curved Shallow Shells to Periodic External Action

open access: yesStructural Mechanics of Engineering Constructions and Buildings
Shallow shells of double curvature are often used as elements of building structures and are subjected to various external effects, including dynamic periodic loads. The paper proposes to extend the previously proposed approach to modeling the process of
Alexey A. Semenov
doaj   +1 more source

A study of the stable carbon and oxygen isotope composition of recent shells of Mytilidae, especially of oxygen values in relation to temperature [PDF]

open access: yesBulletin of the Geological Society of Finland, 2014
Analyses of the stable isotopes 18O and 13C were made of modern marine shells of the widely distributed Mytilidae, primarily intertidal species, collected from beaches in Europe and southern Africa, as well as from Australia and Argentina.
J. Donner   +3 more
doaj   +1 more source

High frequency oscillations of first eigenmodes in axisymmetric shells as the thickness tends to zero [PDF]

open access: yes, 2016
The lowest eigenmode of thin axisymmetric shells is investigated for two physical models (acoustics and elasticity) as the shell thickness (2$\epsilon$) tends to zero.
Chaussade-Beaudouin, Marie   +3 more
core   +5 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

open access: yesAdvanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

TWENTY YEARS OF RESEARCH AND SHELLFISH FARMING IN THE MOUTH OF THE KRKA RIVER [PDF]

open access: yesCroatian Journal of Fisheries, 2001
This work shows a short review of activities in the twenty years of research and controlled shellfish farming in the brackish waters of the mouth of the Krka River.
Drago Maguš   +2 more
doaj  

Molecular gas and triggered star formation surrounding Wolf-Rayet stars

open access: yes, 2012
The environments surrounding nine Wolf-Rayet stars were studied in molecular emission. Expanding shells were detected surrounding these WR stars (see left panels of Figure 1). The average masses and radii of the molecular cores surrounding these WR stars
Liu, Tie, Wu, Yuefang, Zhang, Huawei
core   +1 more source

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