Results 101 to 110 of about 8,311,841 (367)
Hypervelocity impact study: The effect of impact angle on crater morphology [PDF]
The Space Power Institute (SPI) of Auburn University has conducted preliminary tests on the effects of impact angle on crater morphology for hypervelocity impacts. Copper target plates were set at angles of 30 deg and 60 deg from the particle flight path.
Best, Steve +5 more
core +1 more source
Identifying Interstellar Object Impact Craters
, 2022 Samuel H. C. Cabot, Gregory Laughlin
openalex +1 more source
Effect of Designed 3D Reinforcement in Mitigating Machining Damage on CFRP Plates
Polymer Composites, EarlyView.Effect of Edge Tufting on Surface Quality, Damage, and Mechanical Performance in CFRP Machining: A Comparative Topographical and Structural Analysis. ABSTRACT Composite materials made of carbon fiber‐reinforced epoxy (CFRP) are widely used in aerospace fields due to their high strength‐to‐weight ratio. However, due to low out‐of‐plane resistance, these
Thiago Luiz Lara Oliveira +2 more
wiley +1 more source
Clinical periodontal diagnosis
Periodontology 2000, EarlyView., 2023 Abstract Periodontal diseases include pathological conditions elicited by the presence of bacterial biofilms leading to a host response. In the diagnostic process, clinical signs such as bleeding on probing, development of periodontal pockets and gingival recessions, furcation involvement and presence of radiographic bone loss should be assessed prior ...
Giovanni E. Salvi +5 more
wiley +1 more source
Wavelength Dependence of fs Laser Ablation Ionisation Mass Spectrometry: a Dedicated Study on NIST SRM 664. [PDF]
Rapid Commun Mass SpectromABSTRACT Rationale Laser ablation mass spectrometry provides fast and direct chemical information of solids with high spatial resolution without the need for complex sample preparation. It has been shown that reducing the laser pulse length below picoseconds improves the quantification of chemical composition measurements of solids. This study compares
Grimaudo V, Riedo A, Tulej M, Wurz P.
europepmc +2 more sources
Crater size estimates for large-body terrestrial impact [PDF]
Calculating the effects of impacts leading to global catastrophes requires knowledge of the impact process at very large size scales. This information cannot be obtained directly but must be inferred from subscale physical simulations, numerical ...
Housen, Kevin R., Schmidt, Robert M.
core +1 more source
Microbial mats of the Tswaing impact crater: results of a South African exobiology expedition and implications for the search for biological molecules on Mars [PDF]
, 2001 We describe microbial mats from the Tswaing impact crater in South Africa. The mats provide insights into the unique biological characteristics of impact craters and can help strategies for the search for biomolecules on ...
Brandt, D. +3 more
core
Projectile Interactions in Granular Impact Cratering
Physical Review Letters, 2008 We present evidence for the interactions between a ball and the container boundaries, as well as between two balls, that are mediated by the granular medium during impact cratering. The presence of the bottom boundary affects the final penetration depth only for low drop heights with shallow filling, in which case, surprisingly, the penetration becomes
Katsuragi, Hiroaki +3 more
openaire +5 more sources
Superimposed Sacrificial Texturing to Enhance the Optical Performance in Thin‐Film Solar Cells
Progress in Photovoltaics: Research and Applications, EarlyView.Sacrificial texturing method using controlled etching of undoped zinc oxide and indium‐doped tin oxide generates microscale and nanoscale textures on glass. Roughness on two different scales is superimposed to create a new texture capable of broad‐spectrum scattering, which is utilised in thin‐film silicon solar cells to enhance optical performance ...
Govind Padmakumar +6 more
wiley +1 more source
Vog: Using Volcanic Eruptions to Estimate the Health Costs of Particulates
The Economic Journal, EarlyView., 2018 The negative consequences of long‐term exposure to particulate pollution are well established but a number of studies find no effect of short‐term exposure on health outcomes. The high correlation of industrial pollutants complicates the estimation of the impact of individual pollutants on health.
Timothy J. Halliday +2 more
wiley +1 more source