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117 Results Found

  • Article
  • Open Access
5 Citations
1,842 Views
26 Pages

11 April 2025

Sirtuins are involved in cellular processes in multiple ways. Therefore, the development of potent and selective Sirt2 inhibitors provides an important contribution to understanding physiological and pathophysiological mechanisms, particularly for th...

(This article belongs to the Special Issue Organic Synthesis and Medicinal Chemistry, Two Inseparable Partners: Recent Advances in Heterocyclic Chemistry)
  • Article
  • Open Access
4 Citations
1,287 Views
24 Pages

10 October 2025

Selective and potent inhibitors of the NAD+-dependent deacetylase Sirt2 represent a valuable epigenetic strategy for the treatment of currently incurable diseases such as Parkinson’s disease, Huntington’s disease, Alzheimer’s diseas...

(This article belongs to the Section Molecular Biology)
  • Article
  • Open Access
8 Citations
3,034 Views
20 Pages

Discovery of Novel Thiazole-Based SIRT2 Inhibitors as Anticancer Agents: Molecular Modeling, Chemical Synthesis and Biological Assays

  • Francesco Piacente,
  • Giorgia Guccione,
  • Naomi Scarano,
  • Dario Lunaccio and ,
  • Caterina Miro,
  • Elena Abbotto,
  • Annalisa Salis,
  • Bruno Tasso,
  • Monica Dentice and
  • Enrico Millo
  • + 7 authors+ 2 authors

15 October 2024

The search and development of effective sirtuin small molecule inhibitors (SIRTIs) continues to draw great attention due to their wide range of pharmacological applications. Based on SIRTs’ involvement in different biological pathways, their li...

(This article belongs to the Special Issue Computational Studies in Drug Design and Discovery)
  • Article
  • Open Access
89 Views
21 Pages

2 November 2026

Generative-AI systems are increasingly trained on datasets containing AI-generated content, creating recursive feedback that may cause progressive losses of tail mass, diversity, and effective variance in learned distributions–a phenomenon comm...

  • Article
  • Open Access
11 Citations
3,560 Views
23 Pages

Virtual Screening Combined with Enzymatic Assays to Guide the Discovery of Novel SIRT2 Inhibitors

  • Naomi Scarano,
  • Elena Abbotto,
  • Francesca Musumeci,
  • Annalisa Salis and ,
  • Chiara Brullo,
  • Paola Fossa,
  • Silvia Schenone,
  • Santina Bruzzone and
  • Elena Cichero
  • + 4 authors+ 0 author

Sirtuin isoform 2 (SIRT2) is one of the seven sirtuin isoforms present in humans, being classified as class III histone deacetylases (HDACs). Based on the high sequence similarity among SIRTs, the identification of isoform selective modulators repres...

(This article belongs to the Special Issue New Avenues in Molecular Docking for Drug Design 2022)
  • Article
  • Open Access
45 Citations
6,538 Views
22 Pages

SIRT2 Inhibition Results in Meiotic Arrest, Mitochondrial Dysfunction, and Disturbance of Redox Homeostasis during Bovine Oocyte Maturation

  • Dejun Xu,
  • Lin Wu,
  • Xiaohan Jiang,
  • Li Yang and ,
  • Jianyong Cheng,
  • Huali Chen,
  • Rongmao Hua,
  • Guoxia Geng,
  • Lulu Yang and
  • Qingwang Li
  • + 5 authors+ 0 author

SIRT2, a member of the sirtuin family, has been recently shown to exert important effects on mitosis and/or metabolism. However, its roles in oocyte maturation have not been fully clarified. In this study, SIRT2, located in the cytoplasm and nucleus,...

(This article belongs to the Special Issue Recent Progress of Molecular Mechanism of Gene Expression)
  • Article
  • Open Access
28 Citations
8,356 Views
29 Pages

1 March 2023

The SIR model of epidemic spreading can be reduced to a nonlinear differential equation with an exponential nonlinearity. This differential equation can be approximated by a sequence of nonlinear differential equations with polynomial nonlinearities....

(This article belongs to the Special Issue Differential Equations and Networks for Description of Natural and Social Systems: Methodology and Applications)
  • Article
  • Open Access
8 Citations
3,701 Views
23 Pages

The Multi-Compartment SI(RD) Model with Regime Switching: An Application to COVID-19 Pandemic

  • Manuel L. Esquível,
  • Nadezhda P. Krasii,
  • Gracinda R. Guerreiro and
  • Paula Patrício

15 December 2021

We study—with existence and unicity results—a variant of the SIR model for an infectious disease incorporating both the possibility of a death outcome—in a short period of time—and a regime switch that can account for the miti...

(This article belongs to the Special Issue Probability, Statistics and Applied Mathematics)
  • Article
  • Open Access
3,774 Views
13 Pages

The Capability of O-Acetyl-ADP-Ribose, an Epigenetic Metabolic Small Molecule, on Promoting the Further Spreading of Sir3 along the Telomeric Chromatin

  • Shu-Yun Tung,
  • Sue-Hong Wang,
  • Sue-Ping Lee,
  • Shu-Ping Tsai and ,
  • Kuan-Chung Su,
  • Hsiao-Hsuian Shen,
  • Jia-Yang Hong,
  • Ming-Shiun Tsai and
  • Gunn-Guang Liou
  • + 4 authors+ 0 author

30 July 2019

O-acetyl-ADP-ribose (AAR) is a metabolic small molecule relevant in epigenetics that is generated by NAD-dependent histone deacetylases, such as Sir2. The formation of silent heterochromatin in yeast requires histone deacetylation by Sir2, structural...

  • Article
  • Open Access
7 Citations
4,729 Views
13 Pages

18 February 2018

Cryptococcus neoformans successfully replicates in low glucose in infected patients. In the serotype A strain, H99, growth in this condition prolongs lifespan regulated by SIR2, and can be modulated with SIR2-specific drugs. Previous studies show tha...

(This article belongs to the Special Issue Cryptococcus and Cryptococcosis)
  • Article
  • Open Access
4 Citations
3,133 Views
13 Pages

Relationship between the Cycle Threshold Value (Ct) of a Salmonella spp. qPCR Performed on Feces and Clinical Signs and Outcome in Horses

  • Hélène Amory,
  • Carla Cesarini,
  • Lorie De Maré,
  • Clémence Loublier and ,
  • Nassim Moula,
  • Johann Detilleux,
  • Marc Saulmont,
  • Mutien-Marie Garigliany and
  • Laureline Lecoq
  • + 4 authors+ 0 author

The objective of this retrospective study was to evaluate the clinical significance of fecal quantitative real-time polymerase chain reaction (qPCR) Salmonella results when taking the cycle threshold values (Ct) into account. The study included 120 S...

(This article belongs to the Section Veterinary Microbiology)
  • Article
  • Open Access
9 Citations
6,206 Views
9 Pages

19 December 2017

In 2005, an international pediatric sepsis consensus conference defined systemic inflammatory response syndrome (SIRS) for children <18 years of age, but excluded premature infants. In 2012, Hofer et al. investigated the predictive power of SIRS f...

  • Article
  • Open Access
1 Citations
2,394 Views
15 Pages

Correlation of Plasma Temperature in Laser-Induced Breakdown Spectroscopy with the Hydrophobic Properties of Silicone Rubber Insulators

  • Olga Kokkinaki,
  • Panagiotis Siozos,
  • Nikolaos Mavrikakis,
  • Kiriakos Siderakis and ,
  • Kyriakos Mouratis,
  • Emmanuel Koudoumas,
  • Ioannis Liontos,
  • Kostas Hatzigiannakis and
  • Demetrios Anglos
  • + 4 authors+ 0 author

In this study, we have investigated the relationship between the plasma temperature in remote laser-induced breakdown spectroscopy (LIBS) experiments and the hydrophobic properties of silicone rubber insulators (SIRs). Contact angle and LIBS measurem...

(This article belongs to the Special Issue Application of Laser-Induced Breakdown Spectroscopy, 2nd Edition)
  • Article
  • Open Access
4 Citations
3,722 Views
13 Pages

Malignant mesothelioma is one of the appropriate indicators for assessing the carcinogenic effects of asbestos. This study compared the risk ratio of mesothelioma according to the industry in the worker cohort. A cohort was constructed using the Kore...

(This article belongs to the Special Issue Asbestos and Cancers: Exposure from Neighboring Factories and Mines, Contaminated Soil, and Slate Roofs)
  • Article
  • Open Access
8 Citations
3,087 Views
17 Pages

7 November 2023

The occurrence of cross-beam interference in the received signal is one of the main problems that limit the possibilities of massive multiple-input–multiple-output technology (massive-MIMO) in fifth-generation (5G) systems. Thus, the evaluation...

(This article belongs to the Special Issue Modeling and Measurements of Propagation Environments for 5G and beyond Networks)
  • Article
  • Open Access
6 Citations
9,083 Views
17 Pages

3 July 2023

The Demucs-Denoiser model has been recently shown to achieve a high level of performance for online speech enhancement, but assumes that only one speech source is present in the fed mixture. In real-life multiple-speech-source scenarios, it is not ce...

(This article belongs to the Section Acoustics and Vibrations)
  • Article
  • Open Access
10 Citations
4,593 Views
18 Pages

18 December 2022

Since the electronic power conditioner (EPC) is a crucial part applied of a Space Travelling-wave Tube Amplifier (STWTA), the reliability issue must be considered. Of all the failure modes of an EPC, the insulation failure of an EPC in thermal and mo...

(This article belongs to the Section F6: High Voltage)
  • Article
  • Open Access
15 Citations
2,819 Views
21 Pages

13 November 2022

In the present work, a fractional temporal SIR model is considered. The total population is divided into three compartments—susceptible, infected and removed individuals. It generalizes the classical SIR model and consists of three coupled time...

(This article belongs to the Special Issue Mathematical Population Dynamics and Epidemiology)
  • Article
  • Open Access
2 Citations
1,256 Views
27 Pages

This paper addresses the critical challenge of detecting weak, small targets in sonar intensity images for linear-array active sonar, where target signatures are not only obscured by low signal-to-interference ratio (SIR) but also strongly resemble s...

(This article belongs to the Section Ocean Engineering)
  • Article
  • Open Access
2 Citations
4,528 Views
12 Pages

A Population-Based Registry Analysis on Hospitalized COVID-19 Patients with Previous Cardiovascular Disease: Clinical Profile, Treatment, and Predictors of Death

  • Eduardo Gutiérrez-Abejón,
  • Francisco Herrera-Gómez,
  • Débora Martín-García,
  • Eduardo Tamayo and
  • Francisco Javier Álvarez

A high percentage of patients with COVID-19 (coronavirus disease 2019) have previous cardiovascular disease (CVD). The findings presented here came from an epidemiological population-based registry study (real-world data) that enrolled all in-hospita...

(This article belongs to the Section Epidemiology, Lifestyle, and Cardiovascular Health)
  • Article
  • Open Access
  • Best Paper Award
12 Citations
7,488 Views
45 Pages

22 March 2024

The susceptible–infected–recovered–vaccinated–deceased (SIRVD) epidemic compartment model extends the SIR model to include the effects of vaccination campaigns and time-dependent fatality rates on epidemic outbreaks. It encomp...

(This article belongs to the Special Issue Advances in Dynamical Systems, Differential Equations, and Their Applications)
  • Communication
  • Open Access
2 Citations
6,615 Views
9 Pages

13 April 2023

Monitored infection and vaccination rates during past past waves of the coronavirus are used to infer a posteriori two-key parameter of the SIRV epidemic model, namely, the real-time variation in (i) the ratio of recovery to infection rate and (ii) t...

(This article belongs to the Special Issue Analysis of Modeling and Statistics for COVID-19)
  • Article
  • Open Access
24 Citations
4,150 Views
10 Pages

Stiffness Analysis to Predict the Spread Out of Fake Information

  • Raffaele D’Ambrosio,
  • Giuseppe Giordano,
  • Serena Mottola and
  • Beatrice Paternoster

28 August 2021

This work highlights how the stiffness index, which is often used as a measure of stiffness for differential problems, can be employed to model the spread of fake news. In particular, we show that the higher the stiffness index is, the more rapid the...

(This article belongs to the Section Internet of Things)
  • Article
  • Open Access
16 Citations
3,776 Views
9 Pages

Real-Time Estimation of R0 for COVID-19 Spread

  • Theodore E. Simos,
  • Charalampos Tsitouras,
  • Vladislav N. Kovalnogov,
  • Ruslan V. Fedorov and
  • Dmitry A. Generalov

20 March 2021

We propose a real-time approximation of R0 in an SIR-type model that applies to the COVID-19 epidemic outbreak. A very useful direct formula expressing R0 is found. Then, various type of models are considered, namely, finite differences, cubic spline...

(This article belongs to the Special Issue Numerical Analysis and Scientific Computing)
  • Article
  • Open Access
11 Citations
3,991 Views
19 Pages

A Node Embedding-Based Influential Spreaders Identification Approach

  • Dongming Chen,
  • Panpan Du,
  • Bo Fang,
  • Dongqi Wang and
  • Xinyu Huang

10 September 2020

Node embedding is a representation learning technique that maps network nodes into lower-dimensional vector space. Embedding nodes into vector space can benefit network analysis tasks, such as community detection, link prediction, and influential nod...

(This article belongs to the Special Issue Computational Mathematics and Neural Systems)
  • Article
  • Open Access
18 Citations
3,603 Views
10 Pages

Weighted h-index for Identifying Influential Spreaders

  • Liang Gao,
  • Senbin Yu,
  • Menghui Li,
  • Zhesi Shen and
  • Ziyou Gao

10 October 2019

In this paper, we propose weighted h-index h w and h-index strength s h to measure spreading capability and identify the most influential spreaders. Experimental results on twelve real networks reveal that s h was more a...

  • Article
  • Open Access
5 Citations
1,478 Views
19 Pages

15 November 2024

The paper proposes an approach to solving the inverse epidemiological problem, written in terms of the “mean-field” theory. Finding the coefficients of an epidemiological SIR mean-field model is reduced to solving an optimization problem,...

(This article belongs to the Special Issue Applied Mathematics in Disease Control and Dynamics)
  • Article
  • Open Access
19 Citations
7,726 Views
20 Pages

31 May 2024

Identifying influential actors within social networks is pivotal for optimizing information flow and mitigating the spread of both rumors and viruses. Several methods have emerged to pinpoint these influential entities in networks, represented as gra...

(This article belongs to the Section Complexity)
  • Article
  • Open Access
10 Citations
4,167 Views
22 Pages

Closed-Loop Cognitive-Driven Gain Control of Competing Sounds Using Auditory Attention Decoding

  • Ali Aroudi,
  • Eghart Fischer,
  • Maja Serman,
  • Henning Puder and
  • Simon Doclo

30 September 2021

Recent advances have shown that it is possible to identify the target speaker which a listener is attending to using single-trial EEG-based auditory attention decoding (AAD). Most AAD methods have been investigated for an open-loop scenario, where AA...

(This article belongs to the Special Issue Machine Learning in Medical Signal and Image Processing)
  • Article
  • Open Access
3 Citations
3,446 Views
15 Pages

Protection Strategy for Edge-Weighted Graphs in Disease Spread

  • Ronald Manríquez,
  • Camilo Guerrero-Nancuante and
  • Carla Taramasco

31 May 2021

Fake news, viruses on computer systems or infectious diseases on communities are some of the problems that are addressed by researchers dedicated to study complex networks. The immunization process is the solution to these challenges and hence the im...

(This article belongs to the Special Issue Design of Reliable and Robust Networks)
  • Article
  • Open Access
28 Citations
4,291 Views
15 Pages

26 August 2021

Identifying influential nodes in complex networks is of great significance for clearly understanding network structure and maintaining network stability. Researchers have proposed many classical methods to evaluate the propagation impact of nodes, bu...

  • Article
  • Open Access
8 Citations
6,023 Views
15 Pages

Mathematical Modeling of Regional Infectious Disease Dynamics Based on Extended Compartmental Models

  • Olena Kiseleva,
  • Sergiy Yakovlev,
  • Olga Prytomanova and
  • Oleksandr Kuzenkov

This study presents an extended approach to compartmental modeling of infectious disease spread, focusing on regional heterogeneity within affected areas. Using classical SIS, SIR, and SEIR frameworks, we simulate the dynamics of COVID-19 across two...

  • Brief Report
  • Open Access
6 Citations
2,729 Views
9 Pages

The Rise and Fall of Omicron BA.1 Variant as Seen in Wastewater Supports Epidemiological Model Predictions

  • Michal Liddor Naim,
  • Yu Fu,
  • Marilou Shagan,
  • Itay Bar-Or and ,
  • Robert Marks,
  • Qun Sun,
  • Rony Granek and
  • Ariel Kushmaro
  • + 3 authors+ 0 author

31 August 2023

The COVID-19 pandemic caused by the SARS-CoV-2 virus has inflicted significant mortality and morbidity worldwide. Continuous virus mutations have led to the emergence of new variants. The Omicron BA.1 sub-lineage prevailed as the dominant variant glo...

(This article belongs to the Special Issue Wastewater-Based Epidemiology (WBE) in COVID-19 Pandemics)
  • Article
  • Open Access
10 Citations
4,525 Views
15 Pages

Mutual Influence of Users Credibility and News Spreading in Online Social Networks

  • Vincenza Carchiolo,
  • Alessandro Longheu,
  • Michele Malgeri,
  • Giuseppe Mangioni and
  • Marialaura Previti

25 April 2021

A real-time news spreading is now available for everyone, especially thanks to Online Social Networks (OSNs) that easily endorse gate watching, so the collective intelligence and knowledge of dedicated communities are exploited to filter the news flo...

(This article belongs to the Special Issue Digital and Social Media in the Disinformation Age)
  • Article
  • Open Access
6 Citations
1,796 Views
15 Pages

17 June 2023

This paper re-analyzes the nonlinear Susceptible–Infected–Recovered (SIR) model using a hybrid approach based on the Laplace–Padé technique. The proposed approach is successfully applied to extract several analytic approximat...

(This article belongs to the Special Issue Computational Mathematics and Mathematical Modelling)
  • Article
  • Open Access
5 Citations
3,309 Views
17 Pages

16 October 2021

Malaysia is multi-ethnic and diverse country. Heterogeneity, in terms of population interactions, is ingrained in the foundation of the country. Malaysian policies and social distancing measures are based on daily infections and R0 (average number of...

(This article belongs to the Special Issue Topological Graph Theory and Discrete Geometry)
  • Article
  • Open Access
8 Citations
4,052 Views
16 Pages

Design and Modelling of a Compact Triband Passband Filter for GPS, WiMAX, and Satellite Applications with Multiple Transmission Zero’s

  • Abdul Basit,
  • Amil Daraz,
  • Muhammad Irshad Khan,
  • Farid Zubir and ,
  • Salman A. AlQahtani and
  • Guoqiang Zhang
  • + 1 author+ 0 author

Designing microwave filters with high selectivity and sharp roll-off between the stop and pass bands can be challenging due to the complex nature of the R.F. signals and the requirements for achieving high performance in a limited physical space. To...

(This article belongs to the Special Issue Advances in Fractal Antennas: Design, Modeling and Applications)
  • Article
  • Open Access
16 Citations
3,600 Views
12 Pages

COVID-19 Spatial Diffusion: A Markovian Agent-Based Model

  • Marco Gribaudo,
  • Mauro Iacono and
  • Daniele Manini

26 February 2021

We applied a flexible modeling technique capable of representing dynamics of large populations interacting in space and time, namely Markovian Agents, to study the evolution of COVID-19 in Italy. Our purpose was to show that this modeling approach, t...

(This article belongs to the Special Issue Queue and Stochastic Models for Operations Research)
  • Article
  • Open Access
18 Citations
3,560 Views
13 Pages

Multi-Model Selection and Analysis for COVID-19

  • Nuri Ma,
  • Weiyuan Ma and
  • Zhiming Li

In the face of an increasing number of COVID-19 infections, one of the most crucial and challenging problems is to pick out the most reasonable and reliable models. Based on the COVID-19 data of four typical cities/provinces in China, integer-order a...

(This article belongs to the Section Engineering)
  • Article
  • Open Access
4 Citations
3,070 Views
18 Pages

Estimation of COVID-19 Transmission and Advice on Public Health Interventions

  • Qingqing Ji,
  • Xu Zhao,
  • Hanlin Ma,
  • Qing Liu and ,
  • Yiwen Liu and
  • Qiyue Guan
  • + 1 author+ 0 author

10 November 2021

At the end of 2019, an outbreak of the novel coronavirus (COVID-19) made a profound impact on the country’s production and people’s daily lives. Up until now, COVID-19 has not been fully controlled all over the world. Based on the clinical research p...

(This article belongs to the Special Issue Computational Statistics and Data Analysis)
  • Article
  • Open Access
10 Citations
3,799 Views
12 Pages

This paper presents a new hybrid block method formulated in variable stepsize mode to solve some first-order initial value problems of ODEs and time-dependent partial differential equations in applied sciences and engineering. The proposed method is...

(This article belongs to the Special Issue New Challenges Arising in Engineering Problems with Fractional and Integer Order III)
  • Article
  • Open Access
2 Citations
1,657 Views
20 Pages

18 October 2024

In the Internet age, the development of intelligent software has broken the limits of multilingual communication. Recognizing that the data collected on rumor propagation are inherently discrete, this study introduces a novel SIR discrete Internet ru...

  • Article
  • Open Access
5 Citations
3,954 Views
19 Pages

15 July 2021

Among the diverse and important applications that networks currently have is the modeling of infectious diseases. Immunization, or the process of protecting nodes in the network, plays a key role in stopping diseases from spreading. Hence the importa...

(This article belongs to the Special Issue Coronavirus Disease 2019 (COVID-19))
  • Article
  • Open Access
2 Citations
1,945 Views
14 Pages

10 June 2025

In this study, we demonstrate an application for 5G networks in mobile and remote GPR scanning situations to detect buried objects by experts while the operator is performing the scans. Using a GSSI SIR-30 system in conjunction with the RealSense cam...

(This article belongs to the Special Issue Robotics and Intelligent Systems: Technologies and Applications)
  • Article
  • Open Access
1 Citations
3,466 Views
21 Pages

Identifying Influential Nodes in Complex Networks via Transformer with Multi-Scale Feature Fusion

  • Tingshuai Jiang,
  • Yirun Ruan,
  • Tianyuan Yu,
  • Liang Bai and
  • Yifei Yuan

In complex networks, the identification of critical nodes is vital for optimizing information dissemination. Given the significant role of these nodes in network structures, researchers have proposed various identification methods. In recent years, d...

(This article belongs to the Special Issue Advances in Complex Networks)
  • Communication
  • Open Access
4 Citations
3,192 Views
10 Pages

14 February 2023

Monitored differential infection rates of past corona waves are used to infer, a posteriori, the real time variation of the ratio of recovery to infection rate as a key parameter of the SIR (susceptible-infected-recovered/removed) epidemic model. Fro...

(This article belongs to the Section Biophysics and Life Physics)
  • Article
  • Open Access
4 Citations
4,451 Views
13 Pages

30 September 2021

In this paper, we propose a multi-group SIR to simulate the spread of COVID-19 in an island context. The multi-group aspect enables us to modelize transmissions of the virus between non-vaccinated individuals within an age group as well as between di...

(This article belongs to the Section Theoretical Biology and Biomathematics)
  • Article
  • Open Access
42 Citations
6,596 Views
16 Pages

Modeling and Forecasting of COVID-19 Spreading by Delayed Stochastic Differential Equations

  • Marouane Mahrouf,
  • Adnane Boukhouima,
  • Houssine Zine,
  • El Mehdi Lotfi and ,
  • Delfim F. M. Torres and
  • Noura Yousfi
  • + 1 author+ 0 author

7 February 2021

The novel coronavirus disease (COVID-19) pneumonia has posed a great threat to the world recent months by causing many deaths and enormous economic damage worldwide. The first case of COVID-19 in Morocco was reported on 2 March 2020, and the number o...

  • Article
  • Open Access
10 Citations
4,674 Views
14 Pages

21 February 2025

This study assessed the bleaching and abrasiveness levels of different kinds of toothpaste with various RDA values on nanohybrid and microhybrid composite samples using a novel Press-on Force-Guided brushing simulator. One hundred and forty disc-shap...

(This article belongs to the Section Applied Dentistry and Oral Sciences)
  • Article
  • Open Access
14 Citations
4,641 Views
25 Pages

Spread of Epidemic Disease on Edge-Weighted Graphs from a Database: A Case Study of COVID-19

  • Ronald Manríquez,
  • Camilo Guerrero-Nancuante,
  • Felipe Martínez and
  • Carla Taramasco

The understanding of infectious diseases is a priority in the field of public health. This has generated the inclusion of several disciplines and tools that allow for analyzing the dissemination of infectious diseases. The aim of this manuscript is t...

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