Article
Chemistry, Multidisciplinary
Anne C. Nickel, Andrey A. Rudov, Igor I. Potemkin, Jerome J. Crassous, Walter Richtering
Summary: This study compares the interfacial deformation and assembly of anisotropic core-shell and hollow microgels and highlights the importance of microgel shape and stiffness on their behavior at the interface.
Article
Astronomy & Astrophysics
Will Lockhart, Samuel E. Gralla
Summary: EHT observations of the core of M87 suggest a ring-like structure with a diameter of approximately 40 microarcseconds. The thickness of the ring is uncertain, but alternative data analysis methods indicate a preference for thicker rings compared to theoretical expectations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Engineering, Civil
Weifu Sun, Tingting Zhu, Pengwan Chen, Gaojian Lin
Summary: The dynamic stability of submerged cylindrical shells subjected to underwater explosion was investigated in this work, revealing the effects of initial hydrostatic pressure and fluid-structure interaction. Critical threshold values were obtained through numerical simulations and theoretical modeling, showing that the vibrations are stable below this threshold.
THIN-WALLED STRUCTURES
(2022)
Article
Polymer Science
Mitsuhide Sasaoka, Akifumi Kawamura, Takashi Miyata
Summary: Stimuli-responsive core-shell microgels with zwitterionic hydrogel core and temperature-responsive poly[oligo(ethylene glycol)methacrylate-co-2-(2 '-methoxyethoxy)ethyl methacrylate] (P(OEGMA-co-MEO(2)MA)) shell were prepared by inverse miniemulsion RAFT polymerization. A water-soluble block copolymer emulsifier composed of a hydrophilic/lipophilic P(OEGMA-co-MEO(2)MA) block and a hydrophilic PMPC block was used to stabilize the emulsion. The resulting core-shell microgels exhibited stable dispersion in both chloroform and water, and showed temperature-responsive behavior.
Article
Astronomy & Astrophysics
Zhibo Yu, Jiachen Jiang, Cosimo Bambi, Luigi C. Gallo, Dirk Grupe, Andrew C. Fabian, Christopher S. Reynolds, William N. Brandt
Summary: We present a detailed analysis of XMM-Newton spectra for six narrow-line Seyfert 1 (NLS1) galaxies at redshift z = 0.35-0.92. Compared to lower redshift NLS1s, these galaxies have larger black hole masses and similar or lower Eddington ratios. Our study confirms the presence of strong soft X-ray excess emission below 2 keV. We also explore two physical models for the soft excess and find evidence for a warm corona and potentially relativistic reflection.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Automation & Control Systems
Wei Wu, Hui Zhou, Yu Guo, Yifei Wu, Jian Guo
Summary: This paper proposes a new implementation approach to achieve efficient peg-in-hole assembly by autonomously fusing signals of vision detection and fuzzy force using a manipulator. The performance of the method is verified through experiments.
ROBOTICS AND AUTONOMOUS SYSTEMS
(2021)
Article
Astronomy & Astrophysics
Sanjeev Kalita
Summary: In this paper, the author investigates the scales of stellar orbits near the Galactic Center black hole using the scalaron gravity field and corresponding Yukawa coupling. The study reveals the relationship between black hole spin and scalaron mass, providing insight into the possibility of extracting black hole spin.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Collaboration Collaboration LVK
Summary: In this study, a search for gravitational waves from compact binaries was conducted using data from the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo. No signals were detected, with the most significant candidate having a false alarm rate of 0.2 yr(-1). The study presents the most stringent limits to date on the merger rate of binary black holes with at least one subsolar-mass component and explores two scenarios: primordial black holes (PBH) and a model of dissipative dark matter.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Aleksey Generozov, Hagai B. Perets
Summary: Recent surveys have identified several dozen B stars in the Milky Way halo moving faster than the local escape speed, with the origin of most hypervelocity stars (HVSs) still poorly constrained. The velocity distribution of HVSs is found to be inconsistent with binary disruptions by the massive black hole (MBH) in the Galactic Centre, and there is no observed counterpart population in the Galactic Centre that is consistent with the HVSs. Frequent stellar collisions between binary components due to interactions with the MBH do not significantly impact the velocity distribution in the Galactic halo.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Dermatology
Danying Wang, Jinping Ding, Yongkang Jiang, Yuanbo Liu, Bo Chen
Summary: The combination of W-plasty scar revision technique with continuous tension-reduction (CTR) technique significantly improves the aesthetic appearance of facial scars. Clinical results showed that the appearance of scars in this technique group was significantly better than in other groups, with no severe complications reported.
INTERNATIONAL WOUND JOURNAL
(2022)
Article
Multidisciplinary Sciences
Thomas G. Laughlin, Amar Deep, Amy M. Prichard, Christian Seitz, Yajie Gu, Eray Enustun, Sergey Suslov, Kanika Khanna, Erica A. Birkholz, Emily Armbruster, J. Andrew McCammon, Rommie E. Amaro, Joe Pogliano, Kevin D. Corbett, Elizabeth Villa
Summary: This study identifies a protein called ChmA as the main component of the bacteriophage nuclear shell. The structure and dynamics of the ChmA shell provide insights into its formation and functions.
Article
Physics, Fluids & Plasmas
D. J. Stark, J. P. Sauppe, B. M. Haines, S. Palaniyappan, R. F. Sacks, I. Sagert, P. A. Keiter, D. S. Montgomery, T. Morrow, B. M. Patterson, T. E. Quintana, L. Kuettner, L. Goodwin, S. H. Batha, E. N. Loomis
Summary: The use of high-Z plating on the inner gap of double shell capsules shows promise in mitigating the impact of the necessary joint, leading to improved performance in inertial confinement fusion experiments.
PHYSICS OF PLASMAS
(2021)
Article
Computer Science, Interdisciplinary Applications
Leicai Xiao, Long Zeng, Zhaobo Xu, Xueping Liu
Summary: An A-code assembly language and IDE were designed in this study to express product assembly processes, and an ACAS assembly system was proposed to control and reconfigure the assembly processes. The results demonstrate that ACAS can efficiently perform complex tasks in actual assembly operations.
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
(2023)
Article
Astronomy & Astrophysics
George N. Wong
Summary: The article discusses the gravitational lensing near a black hole, where light rays can circle the event horizon multiple times, creating black hole glimmer. By examining how photons arrive at different locations in the image plane, the mass and spin of the black hole can be uniquely encoded. A geometrically motivated treatment of Kerr glimmer is provided, with numerical evaluation for simple models, showing that glimmer can be measured in finite-resolution observations. Potential measurement methods and implications for tests of the Kerr hypothesis are also discussed.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Ulf Danielsson, Luis Lehner, Frans Pretorius
Summary: The study focuses on exploring alternatives to black holes in quantum gravity by developing numerical methods for radial dynamics and accretion processes in specific models. It was found that the original prescription for stabilizing black bubbles in dynamic environments is inadequate and a two-parameter flux model generalization was proposed to address this issue. This research also identifies regions in parameter space that allow for stable black bubbles and the ability to control them to a desired end state after accretion episodes.
Review
Chemistry, Multidisciplinary
Maria Jose Esplandiu, Kuan Zhang, Jordi Fraxedas, Borja Sepulveda, David Reguera
ACCOUNTS OF CHEMICAL RESEARCH
(2018)
Article
Biochemistry & Molecular Biology
Natalia Martin-Gonzalez, Mercedes Hernando-Perez, Gabriela N. Condezo, Marta Perez-Illana, Antonio Siber, David Reguera, Philomena Ostapchuk, Patrick Hearing, Carmen San Martin, Pedro J. de Pablo
NUCLEIC ACIDS RESEARCH
(2019)
Article
Multidisciplinary Sciences
Reidun Twarock, Antoni Luque
NATURE COMMUNICATIONS
(2019)
Article
Multidisciplinary Sciences
Kevin L. Joiner, Arlette Baljon, Jeremy Barr, Forest Rohwer, Antoni Luque
SCIENTIFIC REPORTS
(2019)
Article
Biotechnology & Applied Microbiology
Cynthia B. Silveira, Felipe H. Coutinho, Giselle S. Cavalcanti, Sean Benler, Michael P. Doane, Elizabeth A. Dinsdale, Robert A. Edwards, Ronaldo B. Francini-Filho, Cristiane C. Thompson, Antoni Luque, Forest L. Rohwer, Fabiano Thompson
Article
Physics, Multidisciplinary
Ailo Aasen, David Reguera, Oivind Wilhelmsen
PHYSICAL REVIEW LETTERS
(2020)
Article
Multidisciplinary Sciences
David Reguera, Pol Colomer-de-Simon, Ivan Encinas, Manel Sort, Jan Wedekind, Marian Boguna
SCIENTIFIC REPORTS
(2020)
Article
Biology
Cynthia B. Silveira, Antoni Luque, Ty N. F. Roach, Helena Villela, Adam Barno, Kevin Green, Brandon Reyes, Esther Rubio-Portillo, Tram Le, Spencer Mead, Mark Hatay, Mark J. A. Vermeij, Yuichiro Takeshita, Andreas Haas, Barbara Bailey, Forest Rohwer
Article
Biology
Carlos Mendoza, David Reguera
Article
Multidisciplinary Sciences
Maria J. Esplandiu, David Reguera, Daniel Romero-Guzman, Amparo M. Gallardo-Moreno, Jordi Fraxedas
Summary: Chemically propelled micropumps are promising wireless systems for fluid flow driving, but many existing systems have limitations in terms of chemical fuels, operating conditions, and flow control. In this work, the authors report a self-driven polymer micropump fueled by salt, capable of triggering both radial and unidirectional fluid flows. The micropump utilizes Nafion, a cation-exchange material, to generate chemical gradients and local electric fields for interfacial electroosmotic flows. The directionality of the flow can be controlled by nanostructured Nafion microarrays. The micropump works in a wide range of salt concentrations and can be fueled by different salt cations. It shows potential for efficient water purification and analyte delivery for sensing assays.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ailo Aasen, Oivind Wilhelmsen, Morten Hammer, David Reguera
Summary: The main challenge of nucleation theory lies in accurately evaluating the work of formation of a critical embryo in the new phase, which determines the nucleation rate. The capillarity approximation used in Classical Nucleation Theory, which relies on the planar surface tension, is often criticized for its large discrepancies with experimental results.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Jordi Fraxedas, David Reguera, Maria Jose Esplandiu
Summary: The research demonstrates the design and fabrication of self-propelling microswimmers based on Nafion, driven by ion-exchange and fueled by innocuous salts. These microswimmers exhibit fascinating collective motion and have the ability to purify water. This finding may offer new solutions for applications in water remediation.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Multidisciplinary
Helen M. E. Duyvesteyn, Isaac Santos-Perez, Francesca Peccati, Ane Martinez-Castillo, Thomas S. Walter, David Reguera, Felix M. Goni, Gonzalo Jimenez-Oses, Hanna M. Oksanen, David Stuart, Nicola G. A. Abrescia
Summary: The study reported the three-dimensional structure of the double-stranded DNA bacteriophage PRD1 in complex with the antipsychotic drug chlorpromazine, demonstrating the mechanism of loading heterocyclic drugs by the viral capsid protein. X-ray studies and molecular dynamics simulations revealed the binding modes and organization of the drug with the protein.
Article
Chemistry, Physical
Maria J. Esplandiu, David Reguera, Jordi Fraxedas
Article
Chemistry, Physical
D. Reguera, J. Hernandez-Rojas, J. M. Gomez Llorente