Article
Engineering, Multidisciplinary
A. Garcia-Magarino, S. Sor, R. Bardera, J. Munoz-Campillejo
Summary: This paper discusses the applicability of implementing Interferometric Laser Imaging for Droplet Sizing technique in a wind tunnel to characterize the size and distribution of droplets. Experiments were conducted in the laboratory with different object distances, droplet diameters, and new image processing methods, which generally yielded good results compared to previous approaches.
Article
Engineering, Mechanical
Livia Grandoni, Loic Mees, Nathalie Grosjean, Giovanni Leuzzi, Paolo Monti, Armando Pelliccioni, Pietro Salizzoni
Summary: Due to the importance of airborne disease transmission, especially during the COVID-19 pandemic, scientific research has focused on analyzing the dispersion of particle-laden air clouds expelled by humans during respiratory activities. However, limited knowledge exists regarding the velocity of these emitted particles, which may differ significantly from the surrounding air. This study used the Interferometric Laser Imaging Droplet Sizing technique to simultaneously measure the size and velocity of particles emitted by humans while speaking. The findings provide valuable data for numerical simulations of infected respiratory cloud transmission.
EXPERIMENTS IN FLUIDS
(2023)
Article
Engineering, Chemical
Zhu Zhuo, Yingchun Wu, Botong Wen, Xuecheng Wu
Summary: This study investigates the feasibility of astigmatic dual-beam interferometric particle imaging (ADIPI) for measuring the three-dimensional positions and sizes of spherical metal droplets at panoramic scattering angle. The results show that the measurements of the same droplets from different angles are essentially identical in terms of depth position and size. ADIPI technology offers flexibility and has great potential in metal droplet measurement.
Article
Energy & Fuels
Jun Hayashi, Nozomu Hashimoto, Yoshiaki Okubo, Noriaki Nakatsuka, Yasue Tanaka, Tomohiro Hori, Fumiteru Akamatsu
Summary: The dynamic evaporation processes of fuel droplets in a steep temperature gradient formed by a spray flame were studied using high-speed interferometric laser imaging. Evaporation coefficients for kerosene and surrogate fuel droplets were obtained at different fuel supply rates. The results showed that the evaporation behavior of fuel droplets followed the d-square law, even for droplets in the spray combustion field with sizes in the range of tens of micrometers. The evaporation coefficient of the surrogate fuel was higher than that of kerosene, regardless of the fuel supply rate.
Article
Biochemical Research Methods
David Veysset, Yueming Zhuo, Junya Hattori, Mohajeet Buckhory, Daniel Palanker
Summary: In this study, the optical absorption, thermal conductivity, and thermal expansion coefficients of RPE and choroid were determined using phase-resolved optical coherence tomography (pOCT). These parameters were extracted from the measured changes in optical path length (Delta OPL) using an axisymmetric thermo-mechanical model. The temperature rise during hyperthermia was calculated, and its accuracy was validated by imaging the temperature-sensitive fluorescence at the same location. The results demonstrate that this method is safe and precise enough for calibration of non-damaging retinal laser therapy.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Biochemical Research Methods
David Veysset, Tong Ling, Yueming Zhuo, Vimal Prabhu Pandiyan, Ramkumar Sabesan, Daniel Palanker
Summary: In this study, a method for determining the optical and thermal properties of retina materials is proposed, which is applicable to precise control of photothermal therapy. By using low-energy laser heating and phase-resolved optical coherence tomography, the absorption coefficient and temperature rise can be accurately measured from a single laser exposure, showing higher precision compared to other methods.
BIOMEDICAL OPTICS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Marie-Reine Manlay, Jean-Paul Garandet, Gatien Bacchetta, Mathieu Soulier, Camille Flament
Summary: This work focuses on developing Al/SiC materials using laser powder bed fusion (L-PBF) technique. The aim is to address the issue of SiC dissolution kinetics in melted aluminum to prevent or limit SiC decomposition into Al4C3. Al/SiC powder composites with SiC particles of various sizes, ranging from circa 35 nm to 4.5 μm, are successfully prepared using a standard AlSi7Mg0.6 alloy as the host material, and these composite powders are printed using a standard L-PBF equipment. The resulting parts are thoroughly characterized, and the findings are consistent with a diffusion-based numerical model that investigates the dissolution kinetics as a function of thermophysical and process parameters. An important finding is that only the largest 4.5 μm particles can be partially preserved. A general observation from this work is that thermodynamically unstable nanoparticles cannot survive the L-PBF process.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Environmental Sciences
Kate Pexman, Derek D. Lichti, Peter Dawson
Summary: This study introduces a novel multi-level storey separation technique and a novel door and window detection strategy for automated creation of 2D floor plans and 3D building models from complete terrestrial laser scans of heritage buildings. The methods were demonstrated on three heritage sites, achieving overall accuracies of 94.74% for multi-level storey separation and 92.75% for the building model creation. Additionally, the automated door and window detection methodology achieved an absolute mean dimensional error of 6.3 cm.
Article
Materials Science, Multidisciplinary
Alexander S. Shinkaryov, Dmitriy Yu Ozherelkov, Ivan A. Pelevin, Sergey A. Eremin, Vyacheslav N. Anikin, Maxim A. Burmistrov, Stanislav V. Chernyshikhin, Alexander A. Gromov, Anton Yu Nalivaiko
Summary: This study successfully prepared AlSi10MgCu-diamond composite material via SLM process and utilized various characterization methods for analysis. The presence of carbon additives and the formation of aluminum carbides in the material after the SLM process were demonstrated.
Article
Spectroscopy
E. Rollin, O. Musset, G. Legay, T. Vercouter, J-B Sirven
Summary: The dried droplet method is proposed to characterize matrix effects in LIBS, where a droplet of solution is deposited on the sample surface and ablated to analyze differences in ablated mass, electron excitation temperature, and number density. Applied to 14 pure metals, results show significant variations in ablated atoms, electron excitation temperature, and electron number density among different metals.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Tahereh Izadkhast, Mojtaba Alipour
Summary: Predicting non-adiabatic couplings is crucial for studying non-radiative processes. The authors developed and validated optimally tuned range-separated hybrid functionals (OT-RSHs) to accurately calculate non-adiabatic couplings and related properties within time-dependent density functional theory. They found that the OT-RSHs based on specific density functional approximations, incorporating short-range Hartree-Fock exchange, performed the best. These OT-RSHs provide computationally efficient alternatives for studying non-adiabatic systems and screening novel candidates prior to synthesis.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Optics
J. L. Dominguez-Juarez, M. A. Quiroz-Juarez, J. L. Aragon, R. Quintero-Bermudez, R. Quintero-Torres
Summary: In the past, simplistic models have been used to describe laser propagation in a fluid with heat transfer, leading to inaccurate predictions. In this study, we present a detailed numerical analysis that describes the thermal profile of the fluid and its interaction with the laser. We also evaluate the diffraction field and interferometric pattern to test our model and provide a complete understanding of laser energy transfer and propagation effects.
LASER PHYSICS LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Mitsuo Takayama
Summary: In this study, complete and highly selective nitration of tyrosine in peptides was achieved using UV-MALDI with 3,5-dinitrosalicylic acid (3,5-DNSA) as a nitroaromatic reagent. Additionally, a residue-specific oxidation reaction was observed in glycine residue.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2023)
Article
Multidisciplinary Sciences
Omar Flores, Gaby Deckmyn, Jorge Curiel Yuste, Mathieu Javaux, Alexei Uvarov, Sietse van der Linde, Bruno De Vos, Harry Vereecken, Juan Jimenez, Olga Vinduskova, Andrea Schnepf
Summary: The study introduces a new model, KEYLINK, which integrates soil structure, SOM pools concept, and elements from food web models to improve predictions on soil carbon and water balance.
Article
Food Science & Technology
Xinjie Lin, Peter X. Chen, Lindsay E. Robinson, Michael A. Rogers, Amanda J. Wright
Summary: Consuming whole apples as a food matrix influences lipid digestibility and bioaccessibility from dairy-based meals. Co-consuming apples reduces lipid bioaccessibility but not digestibility. In vitro studies should consider digestive conditions for accurate comparisons to in vivo conditions.
FOOD STRUCTURE-NETHERLANDS
(2021)
