Article
Thermodynamics
Jicang Si, Guochang Wang, Pengfei Li, Jianchun Mi
Summary: This work developed a new skeletal mechanism of methane MILD combustion using the DRG-CSP-ANN method, which significantly outperformed other skeletal mechanisms in predicting autoignition time and flame propagation speed. The study highlighted the importance of mechanism optimization in reduction work for better predictions matching those by the detailed mechanism.
Article
Engineering, Aerospace
Jiayao Zhang, Chiara Bisagni
Summary: This study aims to design novel tailorable and effective mechanisms by controlling buckling behavior in structural elements of a composite wing for future morphing application. The proposed mechanisms offer effective design opportunities of multi-stable configurations and demonstrate the potential to realize morphing of composite wings employing controlled buckling behaviors in structural components.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Wei Du, Feng Gao, Peng Cui, Zhiwu Yu, Wei Tong, Jihao Wang, Zhuang Ren, Chuang Song, Jiaying Xu, Haifeng Ma, Liyun Dang, Di Zhang, Qingyou Lu, Jun Jiang, Junfeng Wang, Li Pi, Zhigao Sheng, Qingyi Lu
Summary: In this study, a reciprocal effect between molecular geometry and crystal structure is reported, which triggers a twisting-untwisting-retwisting cycle for tri-cobalt salicylate hydroxide hexahydrate. This research provides a new concept for designing reversible processes and brings a new perspective in crystallography.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Michael Gomez, Pedro M. Reis, Basile Audoly
Summary: We study the spontaneous buckling behavior of elastic ribbons under large, confined pre-stress. A one-dimensional model is derived through dimension reduction, which successfully captures the qualitative features of the buckling behavior and agrees well with experimental and numerical results.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Multidisciplinary Sciences
Nayelli Marsch-Martinez, J. Irepan Reyes-Olalde, Antonio Chalfun-Junior, Marian Bemer, Yolanda Duran-Medina, Juan Carlos Ochoa-Sanchez, Herenia Guerrero-Largo, Humberto Herrera-Ubaldo, Jurriaan Mes, Alejandra Chacon, Rocio Escobar-Guzman, Andy Pereira, Luis Herrera-Estrella, Gerco C. Angenent, Luis Delaye, Stefan de Folter
Summary: Evolution has been thought to be a conservative process, but new genes originating from non-genic sequences challenge this view. In this study, a potential de novo-originated gene called TWT1 was identified in Arabidopsis thaliana, which can modify microtubule arrangement and affect plant growth and development.
Article
Materials Science, Multidisciplinary
Pengyu Li, Jun Guan, Min Peng, Junhong Wu, Meizhen Yin
Summary: In this study, a cyanostilbene-based molecular crystal, CS-H, with a twisted morphology was successfully developed through accelerated growth or UV irradiation. Structural analysis revealed the crucial role of weak interlayer interactions in the twisting process of CS-H crystals. These crystals, with their twisted morphology and photomechanical twisting motion, have great potential for applications in photoresponsive systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Robotics
Phuoc Thien Phan, Trung Thien Hoang, Mai Thanh Thai, Harrison Low, Nigel Hamilton Lovell, Thanh Nho Do
Summary: Research on soft artificial muscles (SAMs) is rapidly growing, with a focus on developing new actuation ideas and improving existing structures with multifunctionality. By utilizing inspiration from human muscles, a new type of SAM fiber with high aspect ratio, strain, and energy efficiency has been created through twisting and braiding soft hydraulic filament artificial muscles. Experimental results show that these innovations greatly enhance muscle elongation and force output, demonstrating potential applications in emerging fields such as smart compression garments and medical devices.
Article
Engineering, Aerospace
Zhiping Qiu, Xiao Li
Summary: This paper presents a new model for evaluating structural buckling loads with unknown-but-bounded parameters. By dividing parameters into deterministic and uncertain parts, and combining finite element method with perturbation theory, the deterministic and uncertain parts of buckling eigenvalues can be effectively calculated, resulting in upper and lower bounds for the structural buckling eigenvalues.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Civil
Mahmoud Hosseinpour, Alexandre Rossi, Alex Sander Clemente de Souza, Yasser Sharifi
Summary: This study provides a reliable database for predicting the ultimate lateral distortional buckling (LDB) strength of steel-concrete composite beams (SCCB) through extensive parametric studies and numerical simulations. The results show that the proposed high-precision equations are more accurate than existing formulas and can be used in engineering practice.
ENGINEERING STRUCTURES
(2022)
Article
Mechanics
Nima Shabanijafroudi, Rajamohan Ganesan
Summary: The proposed methodology offers a solution for predicting the buckling and postbuckling behavior of composite plates with delamination, with a focus on addressing fracture mechanics phenomena in the postbuckling regime. By utilizing a new laminate partitioning scheme and modeling sublaminates with the first-order shear deformation theory, displacement consistency near the crack tip is improved. The use of a penalty function method enforces the continuity of the displacement field across sublaminate interfaces, while the equilibrium equations are derived using the Ritz method and solved with an arc-length method.
COMPOSITE STRUCTURES
(2021)
Article
Multidisciplinary Sciences
Maojin Tian, Zhengyu Wu, Rongjing Zhang, Junhua Yuan
Summary: Bacterial motility and chemotaxis play a crucial role in environmental exploration and the spread of bacterial infections. This study revealed a swimming mode, called the wrap mode, which allows bacteria to efficiently explore their surroundings.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Automation & Control Systems
Alessandro Colotti, Dominique Monnet, Alexandre Goldsztejn, Franck Plestan
Summary: This article proposes a simple proof that extends the recent sufficient conditions by Seeber and Horn for the finite time convergence of the super twisting algorithm to perturbations in the input gain. The new convergence conditions are compared to state of the art conditions and are found to accept sensibly smaller gains.
Article
Engineering, Civil
Brent D. Keil, Dimitris Fappas, Fritz Gobler, Gregory C. Sarvanis, Giannoula Chatzopoulou, Gregory Lucier, Richard D. Mielke, Spyros A. Karamanos
Summary: This article introduces a long-term research project on lap-welded steel pipeline joints, with a focus on improving their structural performance to withstand earthquakes and other geohazards. Through numerical simulations and experimental studies, a new seismic resistant lap-welded joint is proposed, which offers better performance under severe structural loading conditions while being cost-effective.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Adriano Silva de Carvalho, Mahmoud Hosseinpour, Alexandre Rossi, Carlos Humberto Martins, Yasser Sharifi
Summary: This study investigates the effect of sinusoidal web openings on the ultimate lateral torsional buckling (LTB) resistance of steel I-beams. A high-precision formulation based on artificial neural network (ANN) is proposed to predict the ultimate LTB strength. The proposed formula shows reasonable accuracy compared to existing formulations and can be used as a practical equation in the design of I-beams with sinusoidal web openings.
THIN-WALLED STRUCTURES
(2022)
Article
Chemistry, Physical
Mario de la Hoz Tomas, Mao Yamaguchi, Boiko Cohen, Ichiro Hisaki, Abderrazzak Douhal
Summary: In this study, the photophysical properties of a new symmetrical and bulky TPE derivative (TTECOOBu) in solvents of different polarities and viscosities were investigated. It was found that TTECOOBu in DCM solutions undergoes charge separation along the ethylene bond, leading to a resonance structure with a lifetime of about 1 ns. The relaxation of this structure involves twisting of the ethylene bond and rotation of the phenyl rings, resulting in conformationally-relaxed species with a Stokes-shifted emission. The formation of the red-emitting species depends on the solvent viscosity and rigidity of the medium, with a reversible mechanism observed in DCM and DMF solutions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Guntars Kitenbergs, Andrejs Cebers
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Oksana Petrichenko, Guntars Kitenbergs, Martins Brics, Emmanuelle Dubois, Regine Perzynski, Andrejs Cebers
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Abdelqader Zaben, Guntars Kitenbergs, Andrejs Cebers
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Mazdak Afshar Bakshloo, John J. Kasianowicz, Manuela Pastoriza-Gallego, Jerome Mathe, Regis Daniel, Fabien Piguet, Abdelghani Oukhaled
Summary: This study demonstrates a method for protein detection and classification using a nanometer-scale pore formed by the protein aerolysin, achieving detection at the single-molecule level. Different water-soluble proteins treated with the same protease produce different polypeptide fragments, which can be distinguished based on their impact on the nanopore's ionic current, consistent with predicted fragments.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Biochemical Research Methods
Mazdak Afshar Bakshloo, Safia Yahiaoui, Hadjer Ouldali, Manuela Pastoriza-Gallego, Fabien Piguet, Abdelghani Oukhaled
Summary: This study found that the presence of residual trypsin in the analyte solution can lead to the degradation of longer peptides into shorter ones when using a classic activation protocol. However, the use of a trypsin-free activation protocol can eliminate this bias and is more suitable for peptide/protein analysis.
Article
Chemistry, Physical
Mazdak Afshar Bakshloo, Safia Yahiaoui, Fabien Piguet, Manuela Pastoriza-Gallego, Regis Daniel, Jerome Mathe, John J. Kasianowicz, Abdelghani Oukhaled
Summary: This study investigates a method for protein identification using nanopores. The capture rate and dwell time of polypeptide fragments in the pore are found to depend on the ionic strength and magnitude of the applied voltage. The method is capable of accurately identifying proteins, but further research is needed to optimize the analysis.
Article
Multidisciplinary Sciences
Lionel Chiron, Matthias Le Bec, Celine Cordier, Sylvain Pouzet, Dimitrije Milunov, Alvaro Banderas, Jean-Marc Di Meglio, Benoit Sorre, Pascal Hersen
Summary: This paper introduces a method for advanced automated timelapse experiments using CyberSco.Py software. The software allows real-time image analysis and automatic adjustment of imaging acquisition parameters and device status based on the analysis. The authors demonstrate the significance of this method in cell biology through experiments related to yeast fermentation.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Aurica Farcas, Hadjer Ouldali, Comeliu Cojocaru, Manuela Pastoriza-Gallego, Ana -Maria Resmerital, Abdelghani Oukhaled
Summary: A multi-technique approach was used to prepare poly(3,4-ethylenedioxythiophene/cucurbit[7]uril) pseudorotaxanes (PEDOT.CB7-PPs), and their complexation ability with 3,4-ethylenedioxythiophene (EDOT) was confirmed. The synthesized PEDOT-CB7-PPs showed stable water dispersion as evidenced by dynamic light scattering measurements. The interaction between PEDOT-CB7-PPs and aerolysin nanopore was studied using nanopore resistive pulse sensing and computational modeling techniques, revealing strong interactions. This study provides new insights into supramolecular complexes based on CB7 for future applications in nanobiotechnology.
Article
Multidisciplinary Sciences
Parisa Bayat, Charlotte Rambaud, Bernard Priem, Matthieu Bourderioux, Melanie Bilong, Salome Poyer, Manuela Pastoriza-Gallego, Abdelghani Oukhaled, Jerome Mathe, Regis Daniel
Summary: This study demonstrates the label-free detection and analysis of glycosaminoglycan molecules using biological nanopores, reaching a high resolution in deciphering structural information. It is an important step towards the ultimate goal of glycosaminoglycan sequencing.
NATURE COMMUNICATIONS
(2022)
Editorial Material
Chemistry, Physical
Alexandre Kabla, Benoit Ladoux, Jean-Marc Di Meglio
EUROPEAN PHYSICAL JOURNAL E
(2022)
Article
Biochemistry & Molecular Biology
Mazdak Afshar Bakshloo, Safia Yahiaoui, Matthieu Bourderioux, Regis Daniel, Manuela Pastoriza-Gallego, John J. Kasianowicz, Abdelghani Oukhaled
Summary: Alpha-synuclein plays a crucial role in regulating nerve activity. Mutations in this protein can lead to its aggregation and fibril formation, which is associated with neurodegenerative diseases like Parkinson's. Our study demonstrates that a nanometer-scale pore can effectively distinguish between different forms of alpha-synuclein, including wild-type, mutated, and post-translationally modified variants.
ACS CHEMICAL NEUROSCIENCE
(2023)
Article
Chemistry, Analytical
Ngoc Mai Duong, Angelina Noclain, Victoria E. Reichel, Pierre de Cordovez, Jean-Marc Di Meglio, Pascal Hersen, Gaelle Charron
Summary: In this study, a calibration-free quantitative SERS analysis strategy was proposed using a colorimetric volumetric titration method. By monitoring the progression of the titration through the SERS signal of a complexometric indicator, the equivalence point can be determined conveniently. Three mineral waters with divalent metal concentrations varying by a factor of 25 were successfully titrated using this method with satisfactory accuracy. Remarkably, this procedure can be completed in less than an hour and is suitable for field measurements without the need for laboratory-grade equipment.
Article
Chemistry, Physical
Aurica Farcas, Hadjer Ouldali, Comeliu Cojocaru, Manuela Pastoriza-Gallego, Ana -Maria Resmerital, Abdelghani Oukhaled
Summary: A multi-technique approach was used to prepare and characterize poly(3,4-ethylenedioxythiophene/cucurbit[7]uril) pseudorotaxanes (PEDOT.CB7-PPs). By combining computational modeling and experimental validation, strong interactions between PEDOT-CB7-PPs and the aerolysin nanopore were identified. This study provides valuable insights into the interactions between CB7-based supramolecular complexes and biological entities.
Article
Biochemistry & Molecular Biology
Lewis Rolband, Damian Beasock, Yang Wang, Yao-Gen Shu, Jonathan D. Dinman, Tamar Schlick, Yaoqi Zhou, Jeffrey S. Kieft, Shi-Jie Chen, Giovanni Bussi, Abdelghani Oukhaled, Xingfa Gao, Petr Sulc, Daniel Binzel, Abhjeet S. Bhullar, Chenxi Liang, Peixuan Guo, Kirill A. Afonin
Summary: The International Society of RNA Nanotechnology and Nanomedicine (ISRNN) aims to advance the development of functional nucleic acids and related nanotechnology platforms. This article summarizes recent advancements in viral biology, structure-function relationships of genomic viral RNA, and various applications in drug delivery and nanotechnology.
COMPUTATIONAL AND STRUCTURAL BIOTECHNOLOGY JOURNAL
(2022)
Meeting Abstract
Biophysics
Mazdak Afshar Bakshloo, Monasadat Talarimoghari, Hadjer Ouldali, Jan C. Behrends, Abdelghani Oukhaled
BIOPHYSICAL JOURNAL
(2020)
