Article
Physics, Multidisciplinary
Kohei Yoshimura, Sosuke Ito
Summary: The study generalizes the thermodynamic uncertainty relation and thermodynamic speed limit for deterministic chemical reaction networks, highlighting the role of the scaled diffusion coefficient derived from the connection between macro- and mesoscopic networks. The research shows that the product of the entropy production rate and the ratio of the scaled diffusion coefficient to the square of the rate of concentration change is bounded below by two, and states a trade-off relation between speed and thermodynamic quantities. These results are proven under the general setting of open and nonideal CRNs.
PHYSICAL REVIEW LETTERS
(2021)
Article
Automation & Control Systems
Kenan Yong, Mou Chen, Wei Liu, Qingxian Wu
Summary: In this work, a flexible performance-based control scheme is proposed for a networked uncertain mechanical system under quasi-periodic denial-of-service (DoS) attack and appointed event-triggering (ET) mechanism. The scheme can release and recover the prescribed performance based on the activation and sleeping of the DoS attack. This is achieved by introducing a self-regulation auxiliary system developed based on the theories of positive system and finite-time stability.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Virology
Sourav Haldar, Kenta Okamoto, Rebecca A. Dunning, Peter M. Kasson
Summary: The study focused on the chemically controllable triggering of single-virus fusion within endosomes. The results showed that endosomal curvature did not significantly affect fusion kinetics, indicating that membrane deformability may play a more crucial role in viral entry. This study provides insights into how cellular restriction factors and altered endosomal trafficking affect viral membrane fusion.
JOURNAL OF VIROLOGY
(2021)
Article
Physics, Fluids & Plasmas
Premashis Kumar, Gautam Gangopadhyay
Summary: This study investigates the emergence of the chimera state in a continuum chemical oscillator system using a complex Ginzburg-Landau equation. The study systematically examines the evolution of nonequilibrium thermodynamic entities associated with the chimera state. The temporal evolution of the entropy production rate exhibits beat patterns in the frequency domain, while symmetric profiles associated with the incoherent regime appear in descriptions of the chimera's dynamics and thermodynamics. The study highlights the guiding role of the information uncertainty principle in shaping the energetics of the chimera.
Article
Chemistry, Multidisciplinary
Junjun Tan, Li Zhang, Ming-Chien Hsieh, Jay T. Goodwin, Martha A. Grover, David G. Lynn
Summary: Progressive solute-rich polymer phase transitions offer pathways for ordered supramolecular assemblies, while intrinsically disordered protein domains regulate biological information through conformational ordering. A molecular tagging strategy is considered to control ordering transitions in polymeric materials, and a proof-of-principle minimal peptide phase network is demonstrated with a dynamic chemical network.
Article
Chemistry, Multidisciplinary
Yan Chen, Yusheng Shi, Zhanming Gao, Lei Wang, Yutian Tang, Jinxuan Liu, Chun Liu
Summary: In this study, Ir-III complexes 1 and 2 with unique self-assembly pathways were designed to form crystalline assemblies in aqueous systems. Kinetic and thermodynamic control methods were used to synthesize block and random co-assemblies of 1 and 2. By adjusting the water content, an unprecedented pathway-switching approach was realized to synthesize different co-assemblies. These co-assembly strategies pave the way for the synthesis of crystalline co-assemblies of small molecules and the construction of organic heterostructures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Electrical & Electronic
Zehua Ye, Dan Zhang, Jun Cheng, Zheng-Guang Wu
Summary: This paper discusses the security control of nonlinear unmanned marine vehicle (UMV) systems in a networked environment. The use of dynamic event-triggering mechanisms and a quantizer ensures system stability, and an observer-based sliding mode control scheme is proposed.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Automation & Control Systems
Shuang Liu, Chunmei Duan, Wuneng Zhou
Summary: This paper addresses the problem of stochastic stability of closed-loop systems under deception attacks using an adaptive event-triggering scheme (AETS) with saturation constraint. Novel stability criteria for networked control systems under deception attacks are proposed by considering the difficulty of adapting fixed thresholds to changing systems. An adaptive event-triggering scheme with saturation constraint is introduced, in which a threshold variable incorporating system states is used to reduce network load. The desired controller gain matrix is obtained using linear matrix inequalities (LMIs) technique. The Lyapunov-Krasovskii method is employed to derive sufficient conditions for system stability. Simulation results demonstrate the effectiveness of the proposed method.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2023)
Article
Automation & Control Systems
Yong Xu, Mei Fang, Peng Shi, Ya-Jun Pan, Choon Ki Ahn
Summary: This paper investigates the event-triggered containment control problem of multiagent systems with a directed graph, proposing a novel protocol for scheduling communications between agents and enabling agent-to-agent data transmission through specific local events. The study develops sufficient conditions for solving the CC problem under this protocol and extends it to an adaptive event-triggered protocol without the need for global knowledge, while also deriving positive lower bounds on interevent time intervals to eliminate the Zeno phenomenon.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2021)
Article
Optics
Carlo M. Valensise, Alessandro Giuseppi, Giulio Cerullo, Dario Polli
Summary: This study demonstrates the ability of a deep reinforcement learning agent to generate a long-term stable white-light continuum in a bulk medium without prior knowledge of the system dynamics. It shows that deep reinforcement learning can effectively be used to control complex nonlinear optical experiments.
Article
Chemistry, Organic
Hiromasa Yokoe, Akiko Kiriyama, Miho Shimoda, Satoru Nakajima, Yuna Hashizume, Yuto Endo, Ryoko Iwamoto, Masayoshi Tsubuki, Naoki Kanoh
Summary: Spiro compounds are important scaffolds for pharmaceutical applications, but fewer methods are known for constructing dispiro-cycles. Here, a highly cis-selective method for constructing a 5/6/5-dispirocyclic structure containing pyrrolidine and gamma-lactam rings is reported, using a series of N-arylpropiolamides. The high cis-selectivity is achieved through thermodynamic control, resulting from isomerization. The equilibrium between cis and trans diastereomers favors the formation of cis-adducts.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Automation & Control Systems
Steffen Linsenmayer, Ben W. Carabelli, Stefan Wildhagen, Kurt Rothermel, Frank Allgoewer
Summary: This article explores the control of linear time-invariant systems over a time-slotted communication network by designing controllers and triggering mechanisms to achieve stability and traffic specifications, while also considering performance improvements.
IEEE TRANSACTIONS ON CONTROL OF NETWORK SYSTEMS
(2021)
Article
Geochemistry & Geophysics
Peng Bao, Yu-Qin He, Guo-Xiang Li, Hui-En Zhang, Ke-Qing Xiao
Summary: The study reveals that under mild hydrothermal conditions, the simplest substances can be converted to peptides, driving the development of chemical reaction networks. Peptides exhibit both forward and reverse catalytic effects and display seesaw-like catalytic properties at different temperature ranges. In addition, peptides can catalyze other reactions, playing a crucial role in the origin of life.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Automation & Control Systems
Libei Sun, XiuCai Huang, Yongduan Song
Summary: This research presents a new strategy for achieving stable tracking control in strict-feedback systems with mismatched uncertainties. The proposed method involves intermittent execution of state sensing, control signal transmitting, and adaptive parameter updating, saving energy and reducing computation burden. By replacing variables, a multiple event-triggered control scheme is constructed, ensuring closed-loop system stability and addressing the non-differentiability issue of virtual controllers.
SYSTEMS & CONTROL LETTERS
(2023)
Article
Automation & Control Systems
Moein Soltaninejad, Amir Rikhtehgar Ghiasi, Selim Sivrioglu
Summary: This paper proposes the relative-absolute parallel-triggering approach for both continuous-time and discrete-time paradigms. A weighted switching parallel-triggering method is studied in the continuous-time paradigm, which outperforms existing methods. The paper also addresses the issue of data dropout and estimates the maximum number of sequential data dropouts. The weighted matrix of the trigger condition is beneficial for stability analysis.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2023)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)