Article
Chemistry, Physical
Hsin-Ying Li, Ke-Chia Tseng, Li-Kang Chu
Summary: In this study, time-resolved confocal fluorescent thermometry coupled with a reversible two-state model was used to characterize the thermally-induced dynamics of bovine serum albumin (BSA) on a millisecond timescale. The fluorescence intensity change of constituent tryptophans in BSA was recorded after a 5 degrees C temperature jump from various initial temperatures. An apparent activation energy of 78 +/- 6 kJ mol(-1) was derived to quantify the inter-basin conversion of the energy landscape related to Tier 0 dynamics and potentially linked to collective structural alterations near constituent tryptophan Trp-134.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Optics
Changpeng Chen, Zhongxu Xiao, Wenqi Zhang, Yilong Wang, Haihong Zhu
Summary: The study found that the laser jump speed significantly affects the temperature distribution and thermal stress in laser powder bed fusion of Ti6Al4V alloy. Increasing the laser jump speed leads to a more stable temperature distribution and higher thermal peaks.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Shuai Zhao, Yawen Deng, Yan Yang, Jiahao Lin, Yaru He, Jing Gong, Lei Huang, Suihu Dang, Yunfeng Bai
Summary: In this study, Y2O3 material doped with different concentrations of Zr4+ and a constant concentration of Er3+ was successfully prepared. The relationship between the crystal structure and the doping concentration was investigated, revealing that the lattice parameters decrease and the grain size increases with the increase of Zr4+. The doping of Zr4+ also reduces the upconversion emission of Er3+ and introduces lattice defects, which affect the fluorescence intensity of Er3+ ions. Furthermore, the temperature sensing behavior of Y88%Zr10%Er2%O1.55 crystals based on the fluorescence intensity ratio of Er3+ was studied, showing a high sensitivity to temperature.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
T. Odagaki, Y. Saruyama, T. Ishida
Summary: The free energy landscape is reorganized with temperature modulation, impacting the relaxation process and physical properties. The relaxation time of dielectric response depends on the relaxation of the FEL, converging to equilibrium in the long term. In temperature modulation spectroscopy, the dynamics are influenced by the relaxation time of FEL.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Guangming Wang, Xuefeng Chen, Xun Li, Ying Zeng, Kaka Zhang
Summary: This study reports the emergence of a high-performance organic afterglow in pyrylium induced photopolymerization systems, as well as the mechanism landscape of the afterglow systems as a function of monomer types. Methyl methacrylate exhibits a TADF-type organic afterglow with an afterglow efficiency of 70.4% after pyrylium-catalyzed photopolymerization. Using heavy-atom-containing methacrylate, the external heavy atom effect speeds up phosphorescence decay and enables room-temperature phosphorescence in pyrylium-polymer systems.
Review
Optics
Markus P. Hehlen
Summary: Solid-state laser cooling using anti-Stokes luminescence has been studied extensively, with rare-earth-doped crystals showing the best performance. However, the current best materials have low cross sections due to their electric-dipole forbidden transitions, limiting the achievable temperatures. Research on laser cooling with electric-dipole allowed transitions has been active, and this paper provides a theoretical assessment and reviews experimental results for this approach. While laser cooling with electric-dipole allowed transitions has not been achieved yet, further research in this area shows promising potential.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
S. A. Abdel Gawad, S. Mansour, B. Y. El-Baradie, F. M. El-Mekawey
Summary: This study examines the effects of solvents with different polarities on the electronic absorption and fluorescence spectra of PBBO, and evaluates the dipole moments of the excited and ground states. Results show that the dipole moments of the excited state are larger than those of the ground state. Additionally, the study observes the impact of silver nanoparticles on the emission spectrum of PBBO. Energy transfer between PBBO and laser dyes will be further investigated, along with the calculation of absorption spectra, energy gap, bond length, and IR spectrum using density function theory.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Environmental Sciences
Hongru Bi, Wei Chen, Jun Li, Junting Guo, Changchao She
Summary: Coal mining activities have led to drastic changes in land types, resulting in impacts on local climate and ecological environment. This study, using the WRF model, simulated the impact of land use/cover changes on local temperature in Xilinhot city from 1980 to 2018. The results showed that mining activities had a small impact on the average temperature of the whole region, but a significant warming effect in the mining area. Additionally, the conversion to water bodies had a cooling effect, while the conversion to built-up urban land increased urban temperatures.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Physics, Multidisciplinary
M. Mouhib, S. Bri, M. D. Belrhiti, H. Mounir, A. Tilali
Summary: The performance of graphene for specific applications is affected by defects during the production process. In this study, a finite cluster approximation is used to investigate the effects of bond dilution and bond randomness on a trilayer graphene-like structure. The dependence of critical and compensation temperature on concentration and fluctuation parameters is discussed. The results show a horizontal reentrance due to the competition between exchange couplings and bond concentration, as well as the appearance of two compensation points within a certain range of crystal field. These findings are validated by analyzing magnetizations.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Environmental Sciences
Andrew F. Feldman, Daniel J. Short Gianotti, Isabel F. Trigo, Guido D. Salvucci, Dara Entekhabi
Summary: Climate variability and change have uncertain effects on land surfaces, and this study uses satellite observations to evaluate the responsiveness of land surfaces to environmental forcing. The researchers find that soil moisture distribution and the nonlinear relationship with energy fluxes are important factors in determining land surface responsiveness. These findings are important for assessing hydrologic consequences of climate change.
WATER RESOURCES RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Dongdong Lin, Zhenyu Qian, Massimo Bagnani, Miguel A. Hernandez-Rodriguez, Julio Corredoira-Vazquez, Guanghong Wei, Luis D. Carlos, Raffaele Mezzenga
Summary: Insoluble amyloid fibrils, associated with neurodegenerative diseases, have potential applications in bio-nanomaterials. Gold nanorods were used to study the plasmonic heating and dissociation of amyloid-beta fibrils. The results show that the nanorods can break down the amyloid-beta fibrils by triggering ultrahigh localized surface plasmon resonance heating.
Article
Multidisciplinary Sciences
Nuttanit Pramounmat, Sogol Asaei, Jacob D. Hostert, Kathleen Young, Horst A. von Recum, Julie N. Renner
Summary: This study investigates the use of an electric field as a new approach to control surface grafting. It found that the charge/hydrophobicity of peptides, rearrangement kinetics, and applied electric field impact the grafted morphology of elastin-like polypeptide (ELP) and that assembling charged ELP in an applied electric field impacts transition behavior.
SCIENTIFIC REPORTS
(2022)
Article
Spectroscopy
Arsene Chemin, Amanda Ross, Sylvain Hermelin, Patrick Crozet, Vincent Motto-Ros, Gilles Ledoux, Christophe Dujardin, David Amans
Summary: In this study, we investigate the thermodynamic equilibria in a laser-generated plasma by analyzing the congruence between the rotational temperatures of AlO molecules in their excited state and in their ground state. We use laser induced fluorescence spectroscopy to directly probe the population of rotational levels in the ground electronic state X2E+ of AlO and determine the corresponding rotational temperature. We find that the emission from the excited state B2E+ can provide a useful indication of the kinetic temperature of the species in the plasma for delays longer than a few microseconds.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Engineering, Electrical & Electronic
Yudong Guo, Lijun Xu, Hongyao Li, Hongyu Zhang, Zhang Cao
Summary: This study introduces a planar laser-induced fluorescence (PLIF) technique that can be used to image the temperature and concentration distribution inside flames. The proposed method utilizes laser absorption spectroscopy (LAS) tomography to provide initial images of gas temperature, which are then used to update the fluorescence image iteratively. The results of numerical simulations and experiments demonstrate the effectiveness of this method, with relative errors of temperature and concentration within acceptable ranges.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Thermodynamics
Ze Wang, Xun Li, Lunang Li, Zhixin Zhao, Bo Zhou, Xiaohua Gan
Summary: In this paper, a simplified laser diagnostic approach is proposed to visualize three key scalars in turbulent premixed NH3/H-2/air flames. By utilizing two-photon and single-photon laser-induced fluorescence (LIF) as well as Rayleigh scattering measurements, high signal-to-noise ratio scalar visualization is achieved. This method simplifies the complexity of optical arrangement and enables coupling with other diagnostic techniques.
COMBUSTION AND FLAME
(2022)
Article
Biophysics
Eric R. Henry, Andrea Mozzarelli, Cristiano Viappiani, Stefania Abbruzzetti, Stefano Bettati, Luca Ronda, Stefano Bruno, William A. Eaton
BIOPHYSICAL JOURNAL
(2015)
Article
Multidisciplinary Sciences
Quan Li, Eric R. Henry, James Hofrichter, Jeffrey F. Smith, Troy Cellmer, Emily B. Dunkelberger, Belhu B. Metaferia, Stacy Jones-Straehle, Sarah Boutom, Garrott W. Christoph, Terri H. Wakefield, Mary E. Link, Dwayne Staton, Erica R. Vass, Jeffery L. Miller, Matthew M. Hsieh, John F. Tisdale, William A. Eaton
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2017)
Article
Biochemistry & Molecular Biology
Luca Ronda, Stefano Bettati, Eric R. Henry, Tara Kashav, Jeffrey M. Sanders, William E. Royer, Andrea Mozzarelli
Article
Chemistry, Physical
Emily B. Dunkelberger, Belhu Metaferia, Troy Cellmer, Eric R. Henry
JOURNAL OF PHYSICAL CHEMISTRY B
(2018)
Article
Multidisciplinary Sciences
Friedrich Schotte, Hyun Sun Cho, Ville R. I. Kaila, Hironari Kamikubo, Naranbaatar Dashdorj, Eric R. Henry, Timothy J. Graber, Robert Henning, Michael Wulff, Gerhard Hummer, Mikio Kataoka, Philip A. Anfinrud
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2012)
Article
Multidisciplinary Sciences
Eric R. Henry, Robert B. Best, William A. Eaton
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2013)
Article
Multidisciplinary Sciences
Cristiano Viappiani, Stefania Abbruzzetti, Luca Ronda, Stefano Bettati, Eric. R. Henry, Andrea Mozzarelli, William A. Eaton
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2014)
Letter
Hematology
Arun S. Shet, Laurel Mendelsohn, Julia Harper, David Ostrowski, Eric R. Henry, Eveline Gwaabe, Jim Nichols, Abdu I. Alayash, William A. Eaton, Swee Lay Thein
AMERICAN JOURNAL OF HEMATOLOGY
(2019)
Article
Biochemical Research Methods
Michael Brad Strader, Hongying Liang, Fantao Meng, Julia Harper, David A. Ostrowski, Eric R. Henry, Arun S. Shet, William A. Eaton, Swee L. Thein, Abdu I. Alayash
BIOCONJUGATE CHEMISTRY
(2019)
Article
Multidisciplinary Sciences
Eric R. Henry, Troy Cellmer, Emily B. Dunkelberger, Belhu Metaferia, James Hofrichter, Quan Li, David Ostrowski, Rodolfo Ghirlando, John M. Louis, Stephane Moutereau, Frederic Galacteros, Swee Lay Thein, Pablo Bartolucci, William A. Eaton
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Biophysics
Eric R. Henry, Julia Harper, Kristen E. Glass, Belhu Metaferia, John M. Louis, William A. Eaton
Summary: The study examines the effects of the oxygen-affinity-modifying drug voxelotor on normal blood, showing that the drug impacts oxygen dissociation and association curves through binding different conformations. By incorporating drug binding into the model describing hemoglobin, the study successfully quantitatively explains a complex dataset.
BIOPHYSICAL JOURNAL
(2021)
Article
Hematology
Eric R. Henry, Belhu Metaferi, Quan Li, Julia Harper, Robert B. Best, Kristen E. Glass, Troy Cellmer, Emily B. Dunkelberger, Anna Conrey, Swee Lay Thein, H. Franklin Bunn, William A. Eaton
Summary: Voxelotor is a drug used to treat sickle cell disease by reducing sickling through increasing the concentration of nonpolymerizing, high oxygen affinity hemoglobin. Studies show that while Voxelotor can reduce sickling and decrease hemolysis, it only increases overall oxygen delivery at very low oxygen pressures.
Article
Multidisciplinary Sciences
Belhu Metaferia, Troy Cellmer, Emily B. Dunkelberger, Quan Li, Eric R. Henry, James Hofrichter, Dwayne Staton, Matthew M. Hsieh, Anna K. Conrey, John F. Tisdale, Arnab K. Chatterjee, Swee Lay Thein, William A. Eaton
Summary: Stem cell transplantation and genetic therapies offer potential cures for sickle cell disease, but they are not readily available due to high costs and limited medical facilities. This study focuses on finding an inexpensive oral drug to complement the current FDA-approved medication for inhibiting sickle-hemoglobin polymerization. The researchers conducted a phenotypic screen of over 12,000 compounds and identified 106 compounds that showed significant antisickling effects. These compounds have the potential to be developed into drugs for treating sickle cell disease.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Meeting Abstract
Hematology
Julia Z. Xu, Anna Conrey, Ingrid Frey, James Nichols, Laurel A. Menapace, Laxminath Tumburu, Timothy Lequang, Quan Li, Emily Dunkelberger, Eric Henry, Troy Cellmer, Varsha Iyer, Heidi Mangus, Charles Kung, Lenny Dang, Penelope A. Kosinski, Peter Hawkins, Neal Jeffries, William Eaton, Swee Lay Thein
Meeting Abstract
Biophysics
Troy Cellmer, Marco Buscaglia, Eric Henry, James Hofrichter, William Eaton
BIOPHYSICAL JOURNAL
(2011)