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3,358 Results Found

  • Article
  • Open Access
3 Citations
7,323 Views
20 Pages

Closed-Loop Characterization of Neuronal Activation Using Electrical Stimulation and Optical Imaging

  • Michelle L. Kuykendal,
  • Gareth S. Guvanasen,
  • Steve M. Potter,
  • Martha A. Grover and
  • Stephen P. DeWeerth

3 June 2017

We have developed a closed-loop, high-throughput system that applies electrical stimulation and optical recording to facilitate the rapid characterization of extracellular, stimulus-evoked neuronal activity. In our system, a microelectrode array deli...

  • Article
  • Open Access
4 Citations
3,885 Views
13 Pages

Dynamic Change of R-Loop Implicates in the Regulation of Zygotic Genome Activation in Mouse

  • Hyeonji Lee,
  • Seong-Yeob You,
  • Dong Wook Han,
  • Hyeonwoo La,
  • Chanhyeok Park,
  • Seonho Yoo,
  • Kiye Kang,
  • Min-Hee Kang,
  • Youngsok Choi and
  • Kwonho Hong

18 November 2022

In mice, zygotic genome activation (ZGA) occurs in two steps: minor ZGA at the one–cell stage and major ZGA at the two–cell stage. Regarding the regulation of gene transcription, minor ZGA is known to have unique features, including a tra...

  • Article
  • Open Access
755 Views
41 Pages

4 October 2025

Dihydroorotase (DHOase) catalyzes the reversible cyclization of N-carbamoyl-L-aspartate to dihydroorotate, a key step in de novo pyrimidine biosynthesis. A flexible active site loop in DHOase undergoes conformational switching between loop-in and loo...

  • Feature Paper
  • Article
  • Open Access
3 Citations
1,238 Views
20 Pages

23 April 2024

Active Distribution Networks are Multi-Input Multi-Output (MIMO) systems with coupled dynamics, which cause interactions among the control loops of Distributed Energy Resources (DERs). This undesired effect leads to performance degradation of voltage...

  • Article
  • Open Access
612 Views
19 Pages

Safety Assessment of Loop Closing in Active Distribution Networks Based on Probabilistic Power Flow

  • Wenchao Cai,
  • Yuan Gao,
  • Xiping Zhang,
  • Qin Si,
  • Jiaoxin Jia and
  • Bingzhen Li

22 May 2025

To investigate the security issues of loop-closing operations in medium–low-voltage distribution networks under the influence of stochastic fluctuations from distributed generators (DGs) and loads, probabilistic power flow is introduced for ana...

  • Article
  • Open Access
7 Citations
3,536 Views
14 Pages

Structural Insights into the Active Site Formation of DUSP22 in N-loop-containing Protein Tyrosine Phosphatases

  • Chih-Hsuan Lai,
  • Co-Chih Chang,
  • Huai-Chia Chuang,
  • Tse-Hua Tan and
  • Ping-Chiang Lyu

12 October 2020

Cysteine-based protein tyrosine phosphatases (Cys-based PTPs) perform dephosphorylation to regulate signaling pathways in cellular responses. The hydrogen bonding network in their active site plays an important conformational role and supports the ph...

  • Article
  • Open Access
14 Citations
3,501 Views
12 Pages

Evolution of Dislocation Loops Induced by Different Hydrogen Irradiation Conditions in Reduced-Activation Martensitic Steel

  • Weiping Zhang,
  • Liping Guo,
  • Zhenyu Shen,
  • Jingping Xin,
  • Qunying Huang,
  • Yaxia Wei,
  • Yunxiang Long,
  • Xiong Zhou and
  • Cheng Chen

14 November 2018

Hydrogen can be induced in various ways into reduced-activation ferritic/martensitic (RAFM) steels when they are used as structural materials for advanced nuclear systems. However, because of the fast diffusion of hydrogen in metals, the effect of hy...

  • Feature Paper
  • Article
  • Open Access
48 Citations
7,708 Views
15 Pages

Islanding Detection of Synchronous Distributed Generator Based on the Active and Reactive Power Control Loops

  • Reza Zamani,
  • Mohamad-Esmail Hamedani-Golshan,
  • Hassan Haes Alhelou,
  • Pierluigi Siano and
  • Hemanshu R. Pota

19 October 2018

There has been a considerable importance for the islanding detection due to the growing integration of distributed generations (DGs) in the modern power grids. This paper proposes a novel active islanding detection scheme for synchronous DGs, conside...

  • Article
  • Open Access
1 Citations
1,695 Views
26 Pages

16 October 2024

This paper describes active battery balancing based on a bidirectional buck converter, a flyback converter, and battery cells by using the proposed chain-loop comparison strategy. The role of the bidirectional buck converter is to charge/discharge th...

  • Article
  • Open Access
10 Citations
3,618 Views
18 Pages

15 December 2022

In this study, a noncontact fabric loop sensor based on magnetic-field-induced conductivity, which can simultaneously detect cardiac activity and respiration signals, was developed and the effects of the sensor’s shape and measurement position...

  • Article
  • Open Access
10 Citations
3,182 Views
15 Pages

Crystal Structure of Allantoinase from Escherichia coli BL21: A Molecular Insight into a Role of the Active Site Loops in Catalysis

  • Yen-Hua Huang,
  • Po-Chun Yang,
  • En-Shyh Lin,
  • Ya-Yeh Ho,
  • Wei-Feng Peng,
  • Hsin-Pin Lu,
  • Chien-Chih Huang and
  • Cheng-Yang Huang

13 January 2023

Allantoinase (ALLase; EC 3.5.2.5) possesses a binuclear metal center in which two metal ions are bridged by a posttranslationally carbamylated lysine. ALLase acts as a key enzyme for the biogenesis and degradation of ureides by catalyzing the convers...

  • Article
  • Open Access
4 Citations
1,932 Views
14 Pages

Understanding the Role of Activation Loop Mutants in Drug Efficacy for FLT3-ITD

  • Julhash U. Kazi,
  • Lina Al Ashiri,
  • Rituraj Purohit and
  • Lars Rönnstrand

15 November 2023

The type III receptor tyrosine kinase FLT3 is a pivotal kinase for hematopoietic progenitor cell regulation, with significant implications in acute myeloid leukemia (AML) through mutations like internal tandem duplication (ITD). This study delves int...

  • Article
  • Open Access
18 Citations
3,005 Views
21 Pages

2 March 2020

In the permanent magnet direct-drive wind power grid-connected system, in order to solve the coupling problem between d -axis and q -axis currents and to improve the disturbance rejection performance of direct current (DC) bus voltage under...

  • Article
  • Open Access
15 Citations
3,277 Views
15 Pages

Multiple Mutations in the Non-Ordered Red Ω-Loop Enhance the Membrane-Permeabilizing and Peroxidase-like Activity of Cytochrome c

  • Rita V. Chertkova,
  • Alexander M. Firsov,
  • Nadezda A. Brazhe,
  • Evelina I. Nikelshparg,
  • Zhanna V. Bochkova,
  • Tatyana V. Bryantseva,
  • Marina A. Semenova,
  • Adil A. Baizhumanov,
  • Elena A. Kotova and
  • Dmitry A. Dolgikh
  • + 3 authors

A key event in the cytochrome c-dependent apoptotic pathway is the permeabilization of the outer mitochondrial membrane, resulting in the release of various apoptogenic factors, including cytochrome c, into the cytosol. It is believed that the permea...

  • Article
  • Open Access
19 Citations
2,962 Views
17 Pages

15 April 2021

This paper presents a shunt active power filter connected to the grid via an LCL coupling circuit with implemented closed-loop control. The proposed control system allows selective harmonic currents compensation up to the 50th harmonic with the utili...

  • Article
  • Open Access
12 Citations
3,883 Views
19 Pages

1 August 2020

The application of a distribution static synchronous compensator (D-STATCOM) is the best technical means to solve the problem of reactive power compensation and harmonics. The D-STATCOM system has the characteristics of variable parameters, strong co...

  • Article
  • Open Access
2 Citations
1,497 Views
18 Pages

21 May 2024

Distributed Energies Resources (DERs) can be controlled for supporting the voltage regulation at nodes of an Active Distribution Network (ADN) where they are connected. However, since the ADN is a Multi-Input Multi-Output (MIMO) system with coupled d...

  • Article
  • Open Access
4 Citations
2,735 Views
14 Pages

Modern Active Voltage Control in Distribution Networks, including Distributed Generation, Using the Hardware-in-the-Loop Technique

  • Beshoy Nabil Fahmy Fanos,
  • Mohammad H. Soliman,
  • Hossam E. A. Talaat and
  • Mahmoud A. Attia

29 December 2022

Voltage constraints usually place restrictions on how distributed generation (DG) can be connected to weak distribution networks. As DG capacity increases, active voltage control techniques are needed. Active approaches can greatly lower connection c...

  • Article
  • Open Access
598 Views
15 Pages

9 October 2025

To address the prevalent issues of oscillation and overshoot in high-voltage circuit breaker motor direct-drive mechanisms under classical PI control, this paper proposes an optimized PI speed loop with active damping characteristics. By first establ...

  • Proceeding Paper
  • Open Access
584 Views
20 Pages

9 September 2025

This paper offers a comprehensive methodology for the synthesis and analysis of active filters, including low-pass, high-pass, and band-pass configurations, utilizing operational amplifiers and multi-loop negative feedback systems. The approach invol...

  • Article
  • Open Access
5 Citations
3,176 Views
16 Pages

14 March 2022

The task of tracking cooperative satellites equipped with laser retroreflectors, by means of Satellite Laser Ranging (SLR), is an issue well described in the literature. The follow-up movement of the ground-based transceiver telescope behind an orbit...

  • Article
  • Open Access
151 Views
14 Pages

22 January 2026

Hardware-in-the-loop (HIL) simulation is an essential tool for rapid and cost-effective development and validation of power-electronic systems. The primary objective of this work is to validate and fine-tune a PLECS-based HIL model of a single dual a...

  • Article
  • Open Access
38 Citations
6,240 Views
22 Pages

An Autocrine Wnt5a Loop Promotes NF-κB Pathway Activation and Cytokine/Chemokine Secretion in Melanoma

  • Gastón Barbero,
  • María Victoria Castro,
  • María Belén Villanueva,
  • María Josefina Quezada,
  • Natalia Brenda Fernández,
  • Sharon DeMorrow and
  • Pablo Lopez-Bergami

10 September 2019

Wnt5a signaling has been implicated in the progression of cancer by regulating multiple cellular processes, largely migration and invasion, epithelial-mesenchymal transition (EMT), and metastasis. Since Wnt5a signaling has also been involved in infla...

  • Article
  • Open Access
42 Citations
6,055 Views
18 Pages

Annexin A1 Contained in Extracellular Vesicles Promotes the Activation of Keratinocytes by Mesoglycan Effects: An Autocrine Loop Through FPRs

  • Emanuela Pessolano,
  • Raffaella Belvedere,
  • Valentina Bizzarro,
  • Paola Franco,
  • Iolanda De Marco,
  • Francesco Petrella,
  • Amalia Porta,
  • Alessandra Tosco,
  • Luca Parente and
  • Antonello Petrella
  • + 1 author

19 July 2019

We have recently demonstrated that mesoglycan, a fibrinolytic compound, may be a promising pro-healing drug for skin wound repair. We showed that mesoglycan induces migration, invasion, early differentiation, and translocation to the membrane of kera...

  • Article
  • Open Access
15 Citations
6,324 Views
21 Pages

Smad2/3 Activation Regulates Smad1/5/8 Signaling via a Negative Feedback Loop to Inhibit 3T3-L1 Adipogenesis

  • Senem Aykul,
  • Jordan Maust,
  • Vijayalakshmi Thamilselvan,
  • Monique Floer and
  • Erik Martinez-Hackert

Adipose tissues (AT) expand in response to energy surplus through adipocyte hypertrophy and hyperplasia. The latter, also known as adipogenesis, is a process by which multipotent precursors differentiate to form mature adipocytes. This process is dir...

  • Feature Paper
  • Article
  • Open Access
15 Citations
6,647 Views
15 Pages

Novel Mechanisms of ALK Activation Revealed by Analysis of the Y1278S Neuroblastoma Mutation

  • Jikui Guan,
  • Yasuo Yamazaki,
  • Damini Chand,
  • Jesper R. Van Dijk,
  • Kristina Ruuth,
  • Ruth H. Palmer and
  • Bengt Hallberg

30 October 2017

Numerous mutations have been observed in the Anaplastic Lymphoma Kinase (ALK) receptor tyrosine kinase (RTK) in both germline and sporadic neuroblastoma. Here, we have investigated the Y1278S mutation, observed in four patient cases, and its potentia...

  • Article
  • Open Access
19 Citations
6,189 Views
18 Pages

Perception-Aware Planning for Active SLAM in Dynamic Environments

  • Yao Zhao,
  • Zhi Xiong,
  • Shuailin Zhou,
  • Jingqi Wang,
  • Ling Zhang and
  • Pascual Campoy

27 May 2022

This paper presents a perception-aware path planner for active SLAM in dynamic environments using micro-aerial vehicles (MAV). The “Next-Best-View” planner (NBVP planner) is combined with an active loop closing, which is called the Active...

  • Article
  • Open Access
20 Citations
5,124 Views
13 Pages

19 January 2020

This paper deals with the robust control method for permanent magnet synchronous motor (PMSM) speed-regulation system based on active disturbance compensation. Different from the classical PMSM disturbance compensation scheme, a novel disturbance fee...

  • Article
  • Open Access
6 Citations
2,817 Views
13 Pages

Phosphorylation, Mg-ADP, and Inhibitors Differentially Shape the Conformational Dynamics of the A-Loop of Aurora-A

  • Zahra Musavizadeh,
  • Alessandro Grottesi,
  • Giulia Guarguaglini and
  • Alessandro Paiardini

12 April 2021

The conformational state of the activation loop (A-loop) is pivotal for the activity of most protein kinases. Hence, the characterization of the conformational dynamics of the A-loop is important to increase our understanding of the molecular process...

  • Article
  • Open Access
1 Citations
568 Views
22 Pages

Interplay Between DNA Polymerase, RNA Polymerase, and RNase H1 During Head-On Transcription–Replication Conflict

  • Nadezhda A. Timofeyeva,
  • Ekaterina I. Tsoi,
  • Darya S. Novopashina,
  • Nikita A. Kuznetsov and
  • Aleksandra A. Kuznetsova

27 November 2025

Transcription–replication conflicts (TRCs) often occur in cells and cause DNA replication fork stalling. In this study, we investigated the interplay of RNA polymerase (RNAP), DNA polymerase, and RNase H1 (RH1) during head-on TRC in vitro with...

  • Article
  • Open Access
5 Citations
5,826 Views
9 Pages

The Kiss Switch Brings Inactive R3C Ligase Ribozyme Back to Life

  • Kana Tanizawa,
  • Sayuri Uchida,
  • Eri Kurihara,
  • Takuya Umehara and
  • Koji Tamura

9 January 2018

R3C ligase ribozyme catalyzes the nucleophilic attack by a 3′-hydroxyl on a 5′-α-phosphorus of triphosphates to form a 3′-5′-phosphodiester bond. In the present study, although the truncation of R3C ribozyme was accompanied by a large reduction in li...

  • Article
  • Open Access
6 Citations
2,952 Views
30 Pages

Human Vitamin K Epoxide Reductase as a Target of Its Redox Protein

  • Julie Ledoux,
  • Maxim Stolyarchuk,
  • Enki Bachelier,
  • Alain Trouvé and
  • Luba Tchertanov

Human vitamin K epoxide reductase (hVKORC1) enzymatic activity requires an initial activation by a specific redox protein, a less studied step in the hVKORC1 vital cycle. Significant steric conditions must be met by enzymes, being that to adapt their...

  • Article
  • Open Access
4 Citations
2,934 Views
17 Pages

Dopamine D2 Receptor Activation Blocks GluA2/ROS Positive Feedback Loop to Alienate Chronic-Migraine-Associated Pain Sensitization

  • Wei Zhang,
  • Xiaoyan Zhang,
  • Ming Lei,
  • Dunke Zhang,
  • Guangcheng Qin,
  • Jiying Zhou,
  • Lichun Ji and
  • Lixue Chen

Chronic migraine is a disabling disorder without effective therapeutic medicine. AMPA receptors have been proven to be essential to pathological pain and headaches, but the related regulatory mechanisms in chronic migraine have not yet been explored....

  • Article
  • Open Access
1 Citations
1,998 Views
16 Pages

Role of R-Loop Structure in Efficacy of RNA Elongation Synthesis by RNA Polymerase from Escherichia coli

  • Nadezhda A. Timofeyeva,
  • Ekaterina I. Tsoi,
  • Darya S. Novopashina,
  • Aleksandra A. Kuznetsova and
  • Nikita A. Kuznetsov

14 November 2024

The mechanism of transcription proceeds through the formation of R-loop structures containing a DNA–RNA heteroduplex and a single-stranded DNA segment that should be placed inside the elongation complex; therefore, these nucleic acid segments a...

  • Article
  • Open Access
839 Views
24 Pages

4 September 2025

To enhance the speed regulation accuracy and robustness of permanent magnet synchronous motor (PMSM) drives under complex operating conditions, this paper proposes a dual-loop active disturbance rejection control strategy optimized by an opposition-b...

  • Article
  • Open Access
8 Citations
2,696 Views
14 Pages

17 March 2020

Active power filters (APFs) are dynamic power electronic devices that suppress harmonics and reactive power. To simplify the detection and extraction of traditional APF harmonics and reactive current, this paper proposes a direct source current contr...

  • Article
  • Open Access
2,093 Views
18 Pages

Passivity-Based Control for Transient Power Sharing and State of Charge Restoration in a Semi-Active Supercapacitor-Battery System

  • Fabian Fracica-Rodriguez,
  • Manuel Acevedo-Iles,
  • David Romero-Quete,
  • Wilmar Martinez and
  • Camilo A. Cortes

12 September 2024

This paper presents a passivity-based control (PBC) approach integrated with filtering for a supercapacitor (SC) in a semi-active hybrid energy storage system. The PBC is designed as a current controller using the reference provided by the filter to...

  • Article
  • Open Access
13 Citations
3,363 Views
24 Pages

Structural Properties and Dielectric Hysteresis of Molecular Organic Ferroelectric Grown from Different Solvents

  • Elena Balashova,
  • Aleksandr A. Levin,
  • Alexander Fokin,
  • Alexey Redkov and
  • Boris Krichevtsov

21 October 2021

A comparative analysis of crystal structure, Raman spectra, and dielectric hysteresis loops was carried out for organic ferroelectric crystals of 2-methylbenzimidazole (MBI) grown from ethanol (MBIet), acetone (MBIac), deuterated acetone (MBId-ac), o...

  • Communication
  • Open Access
2,155 Views
10 Pages

13 December 2022

This paper proposed a 5.42~6.28 GHz type-II phase locked loop (PLL) for the sake of both loop filter switching capability and extensive programmability. An on-chip loop filter is used in conjunction with off-chip one to form a switching filter pair f...

  • Article
  • Open Access
4 Citations
2,693 Views
20 Pages

25 October 2024

This paper presents the development of a hardware-in-the-loop ground testbed featuring active gravity compensation via software-in-the-loop integration, specially designed to support research in autonomous robotic removal of space debris. The testbed...

  • Article
  • Open Access
7 Citations
2,789 Views
20 Pages

9 November 2019

In order to improve the dynamic response speed and the steady-state performance of the DC side bus voltage of the wind power grid-connected inverter, a mathematical model of a typical three-phase voltage type PWM (Pulse Width Modulation, PWM) grid-co...

  • Article
  • Open Access
3 Citations
4,752 Views
21 Pages

Challenges of Ensuring Reverse Logistics in a Military Organization Using Outsourced Services

  • Aidas Vasilis Vasiliauskas,
  • Saulius Ivanauskas and
  • Kristina Čižiūnienė

28 May 2024

A circular economy is defined as a socially responsible, policy-driven model of business or enterprise operations that contributes to more sustainable society for both current and future generations. Although the implementation of circularity princip...

  • Article
  • Open Access
339 Views
47 Pages

26 December 2025

The control of wastewater treatment plants (WWTPs) is an ecologically, economically, and socially important objective. In the case of plants using activated sludge (ASP) processes, their control presents a significant challenge due to the complexity...

  • Article
  • Open Access
4 Citations
3,114 Views
17 Pages

11 February 2022

This paper presents a design synthesis method for robust controllers of active vehicle suspensions (AVSs). Various control techniques have been applied to the design of AVSs for enhancing ride comfort and handling performance of ground vehicles. Howe...

  • Article
  • Open Access
22 Citations
3,485 Views
22 Pages

A New Control for Improving the Power Quality Generated by a Three-Level T-Type Inverter

  • Brahim Deffaf,
  • Naamane Debdouche,
  • Habib Benbouhenni,
  • Farid Hamoudi and
  • Nicu Bizon

A new controller based on a fractional-order synergetic controller (FOSC) is proposed for a three-level T-type inverter using a shunt active power filter (SAPF). The SAPF is designed to compensate for the reactive power and eliminate the current harm...

  • Article
  • Open Access
4 Citations
1,799 Views
16 Pages

In this paper, a fractional-order extension of a negative position feedback (NPF) controller for active damping is proposed. The design of the controller is motivated by the frequency-domain loop shaping analysis, and the controller dynamics are defi...

  • Article
  • Open Access
12 Citations
4,257 Views
21 Pages

Dual Activity BLEG-1 from Bacillus lehensis G1 Revealed Structural Resemblance to B3 Metallo-β-Lactamase and Glyoxalase II: An Insight into Its Enzyme Promiscuity and Evolutionary Divergence

  • Shaw Xian Au,
  • Nur Syazana Dzulkifly,
  • Noor Dina Muhd Noor,
  • Hiroyoshi Matsumura,
  • Raja Noor Zaliha Raja Abdul Rahman and
  • Yahaya M. Normi

29 August 2021

Metallo-β-lactamases (MBLs) are class B β-lactamases from the metallo-hydrolase-like MBL-fold superfamily which act on a broad range of β-lactam antibiotics. A previous study on BLEG-1 (formerly called Bleg1_2437), a hypothetical protein from Bacillu...

  • Article
  • Open Access
22 Citations
4,317 Views
26 Pages

Superheated Steam Temperature Control Based on a Hybrid Active Disturbance Rejection Control

  • Gengjin Shi,
  • Zhenlong Wu,
  • Jian Guo,
  • Donghai Li and
  • Yanjun Ding

6 April 2020

Superheated steam temperature (SST) is a significant index for a coal-fired power plant. Its control is becoming more and more challenging for the reason that the control requirements are stricter and the load command changes extensively and frequent...

  • Review
  • Open Access
49 Citations
15,907 Views
26 Pages

Approaches for Selective Oxidation of Methane to Methanol

  • Richa Sharma,
  • Hilde Poelman,
  • Guy B. Marin and
  • Vladimir V. Galvita

6 February 2020

Methane activation chemistry, despite being widely reported in literature, remains to date a subject of debate. The challenges in this reaction are not limited to methane activation but extend to stabilization of the intermediate species. The low C-H...

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