Results 111 to 120 of about 7,757,874 (295)

Crater formation in soils by raindrop impact

open access: yes, 2004
The process of crater formation by the impact of water drops on soil, sand and various other target material was studied. Craters of various shapes and sizes were observed on different target materials or conditions, ranging from circumferential ...
Ghadiri, Hossein, Ghadiri, H
core   +1 more source

Tailoring Laser Powder Bed Fusion and Post‐Processing Parameters for JIS SKD61 Tool Steels: Surface Roughness, Microstructure, and Mechanical Properties

open access: yessteel research international, EarlyView.
Laser powder bed fusion of JIS SKD61 tool steel is systematically optimized using a Taguchi design and ANOVA. Hatch spacing and layer thickness are identified as dominant parameters controlling surface roughness and tensile strength. Subsequent tempering at 600°C improves microstructural stability and mechanical performance, enabling high‐density SKD61
Masrurotin Masrurotin   +4 more
wiley   +1 more source

Effect of Different Surface Treatments on Resistance to Abrasive Wear of AISI 4140 Steel

open access: yessteel research international, EarlyView.
This study investigates how different surface treatments affect resistance to abrasive wear of AISI 4140 Steel. The wear rate was significantly higher in samples subjected to conventional treatments than in samples coated using the HVOF process, demonstrating the superior efficiency of coatings applied by thermal spraying in mitigating abrasive wear ...
Everton Freitas de Oliveira   +3 more
wiley   +1 more source

Near‐field blast behavior of ultra‐high‐performance concrete slabs: Parametric analysis and calibration of the UFC‐3‐340 predictive model

open access: yesStructural Concrete, EarlyView.
Abstract Blast loads impose extreme, short‐duration pressures that can cause severe structural damage and compromise safety, a crucial aspect in critical infrastructure, including nuclear facilities. Whereas ultra‐high‐performance concrete (UHPC) offers superior blast resistance compared to conventional concrete (CC) and high‐performance concrete (HPC),
Mohamad Tarabin, Ousmane A. Hisseine
wiley   +1 more source

Impact Crater Hydrothermal Systems Support Rapid Microbial Enrichment and Diverse Metabolic Potential [PDF]

open access: yesGeobiology
ABSTRACT Impact crater hydrothermal systems, formed after asteroid and comet impacts, have been proposed as promising habitats for life on early Earth and as key targets in the search for life on planetary bodies such as Mars, since they provide liquid water and active geochemical turnover.
Hardy S   +8 more
europepmc   +2 more sources

Functional variation in butterfly egg pore traits: The potential role of climate

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Immobile eggs of terrestrial animals are exposed to variable environmental conditions. Insect egg pores, critical for gas exchange (aeropyles) and fertilisation (micropyles), are ecologically important yet understudied.
Teun de Jong   +4 more
wiley   +1 more source

YOLOv8-LCNET: An Improved YOLOv8 Automatic Crater Detection Algorithm and Application in the Chang’e-6 Landing Area

open access: yesSensors
The Chang’e-6 (CE-6) landing area on the far side of the Moon is located in the southern part of the Apollo basin within the South Pole–Aitken (SPA) basin.
Jing Nan   +9 more
doaj   +1 more source

Impact Toolbox

open access: yes
The Impact Toolbox by the Evaluating Societal Impact project is a catalogue of tools and methods that helps university staff select resources for a structured approach to academic impact ambitions, activities and assessment.The collection draws upon a ...
Evaluating Societal Impact
core   +1 more source

Breadwinner backlash: The gendered effects of industrial decline

open access: yesAmerican Journal of Political Science, EarlyView.
Abstract Low‐skilled men have long been vulnerable to globalization, decarbonization, and other forms of economic disruption. When shocks are realized, women often increase their paid labor to compensate for men's loss of income. We study how layoffs of low‐skilled men and concurrent shifts in workforce composition toward women affect voting.
Richard Clark, Roza Khoban, Noah Zucker
wiley   +1 more source

Impact Competence Catalogue

open access: yes
This tool presents a selection of competences that are relevant for societal impact. The content is presented as a non-exhaustive list of competences that academics can develop for impact-oriented academic activities.
Evaluating Societal Impact
core   +1 more source

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