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3 November 2023
Materials 2023 Best Paper Awards—Winners Announced

We are pleased to announce the winners of the Materials 2023 Best Paper Awards. All the papers published in Materials (ISSN: 1996-1944) from 1 January 2021 to 31 December 2021 were considered. After a thorough evaluation of the originality and significance of the papers and citation and download data, 3 articles and 3 reviews were selected.

Articles:

First Prize: CHF 500, a certificate, plus the option to publish a paper free of charge in Materials before 1 October 2024 after peer review
A Stretchable, Self-Healable Triboelectric Nanogenerator as Electronic Skin for Energy Harvesting and Tactile Sensing
by Xi Han, Dongjie Jiang, Xuecheng Qu, Yuan Bai, Yu Cao, Ruizeng Luo and Zhou Li
Materials 2021, 14(7), 1689; https://doi.org/10.3390/ma14071689

Second Prize: CHF 300, a certificate, plus the option to publish a paper free of charge in Materials before 1 October 2024 after peer review
High UV and Sunlight Photocatalytic Performance of Porous ZnO Nanostructures Synthesized by a Facile and Fast Microwave Hydrothermal Method
by Sofia Henriques Ferreira, Maria Morais, Daniela Nunes, Maria João Oliveira, Ana Rovisco, Ana Pimentel, Hugo Águas, Elvira Fortunato and Rodrigo Martins
Materials 2021, 14(9), 2385; https://doi.org/10.3390/ma14092385

Third Prize: CHF 200, a certificate, plus the option to publish a paper free of charge in Materials before 1 October 2024 after peer review
Behaviour and Properties of Eco-Cement Pastes Elaborated with Recycled Concrete Powder from Construction and Demolition Wastes
by Laura Caneda-Martínez, Manuel Monasterio, Jaime Moreno-Juez, Sagrario Martínez-Ramírez, Rosario García and Moisés Frías
Materials 2021, 14(5), 1299; https://doi.org/10.3390/ma14051299

Reviews:

First Prize: CHF 500, a certificate, plus the option to publish a paper free of charge in Materials before 1 October 2024 after peer review
Current Trends in Automotive Lightweighting Strategies and Materials
by Frank Czerwinski
Materials 2021, 14(21), 6631; https://doi.org/10.3390/ma14216631

Second Prize: CHF 300, a certificate, plus the option to publish a paper free of charge in Materials before 1 October 2024 after peer review
Antioxidants: Classification, Natural Sources, Activity/Capacity Measurements, and Usefulness for the Synthesis of Nanoparticles
by Jolanta Flieger, Wojciech Flieger, Jacek Baj and Ryszard Maciejewski
Materials 2021, 14(15), 4135; https://doi.org/10.3390/ma14154135

Third Prize: CHF 200, a certificate, plus the option to publish a paper free of charge in Materials before 1 October 2024 after peer review
Charge Carrier Processes and Optical Properties in TiO2 and TiO2-Based Heterojunction Photocatalysts: A Review
by Stefano Lettieri, Michele Pavone, Ambra Fioravanti, Luigi Santamaria Amato and Pasqualino Maddalena
Materials 2021, 14(7), 1645; https://doi.org/10.3390/ma14071645

Please join us in congratulating the winners of the Materials 2023 Best Paper Awards. We would also like to take this opportunity to thank all of our authors for their continued support.

For more information about the awards presented by Materials, please visit the following link: https://www.mdpi.com/journal/materials/awards.

1 November 2023
MDPI Insights: The CEO's Letter #5 - OA Week, UK, and Strategy

Welcome to the MDPI Insights: The CEO's Letter.

In these monthly letters, I will showcase two key aspects of our work at MDPI: our commitment to empowering researchers and our determination to facilitating open scientific exchange.


Opening Thoughts

Open Access Week 2023 – the Global Drive to Open Continues

As the world's largest open-access (OA) publisher, we believe that unrestricted access to research findings is the cornerstone of transparency, efficiency, and quality control across scientific disciplines. At MDPI, we provide free, immediate access to scientific papers, empowering scientists to examine, validate, replicate, and build upon existing results. This minimizes redundancy, optimizes resources, and fosters innovative approaches.

International OA Week, held from 23 to 29 October 2023, provided a unique opportunity to link the global movement toward open sharing and open science with the progress of policy changes at the local level. Our mission, during OA Week and all the year round, is to offer educational resources highlighting the benefits of open-access publishing. The MDPI Blog is a valuable resource for information on open access and open science.

Core principles of OA publishing

Accessibility, transparency, and collaboration are core principles of OA publishing. OA aims to break down barriers that have traditionally restricted research access, ensuring that knowledge is available to all, regardless of financial situation or institutional affiliations. Our commitment to diverse pathways for OA publishing worldwide includes discounts for researchers. You can learn more about how MDPI supports scientific communities here.

One of the key strengths of OA publishing is its ability to facilitate interdisciplinary research. By removing paywalls and promoting knowledge-sharing across disciplines, OA encourages collaboration and innovation. Researchers from various fields can access and build upon each others’ work, fostering a holistic approach to addressing complex global challenges.

OA holds the potential to democratize knowledge, advance science, and drive positive societal change.

Policy driving change

Governments, institutions, and funding agencies have recognized the transformative potential of OA and have implemented policies to promote it. These policies often require publicly funded research to be made openly accessible, accelerating the growth of OA repositories and journals. Check out our spotlights on OA policies in the USEU and China

OA publishing is continuously evolving, with community-driven models and technologies shaping its future. Initiatives such as “Plan S” and “cOAlition S” promote OA publishing from the perspective of national funders, requiring grantees to publish their research openly. A new policy announced by the US administration last year mandates that, with effect from January 2026, all US federally funded research should be freely and immediately available after publication.

Additionally, preprint servers such as MDPI's Preprints.org, which allow researchers to share their findings before formal peer review, have gained popularity, enhancing the speed at which new knowledge is disseminated. The rise of blockchain technology is also being explored to ensure transparency and authenticity in scholarly publishing.

For more than two decades, OA publishing has been revolutionizing academic publishing by promoting accessibility, transparency, and collaboration. Its support for interdisciplinary research, evolving policies, and innovative practices all contribute to its growing influence in the global research community. As OA continues to expand, it holds the potential to democratize knowledge, advance science, and drive positive societal change.

MDPI is proud to lead the transition to open access.

Read more:

Impactful Research

Spotlight on Smart Cities

Smart cities will serve as a cornerstone for future human development. Their implementation will help us tackle many of the significant challenges we are facing – climate change, ageing populations, waste management, public safety, travel, and so on. Recognising the importance of this multifaceted field, MDPI launched the inaugural issue of Smart Cities in 2018 to provide an advanced forum for research into smart technology and society. Here we take a look at how this journal has developed, and its impact in this exciting field.

As at 30 October, 2023, Smart Cities has published 421 papers and has an Impact Factor of 6.4. It also has a CiteScore of 8.5, and more than one quarter of its published papers – 124 – have been cited 10 times or more.

Highly cited papers in Smart Cities

Below are several highly cited papers recently published in Smart Cities. Citation metrics are current as at 31 October 2023.

1. “Introducing the “15-Minute City”: Sustainability, Resilience and Place Identity in Future Post-Pandemic Cities
Authors: Carlos Moreno, Zaheer Allam, Didier Chabaud, Catherine Gall and Florent Pratlong
Smart Cities 2021, 4(1), 93-111; https://doi.org/10.3390/smartcities4010006
Citations: Crossref (338), Scopus (366), Web of Science (270), Google Scholar (710)
The paper discusses the socio-economic impacts of the COVID-19 on cities, including increasing inequalities and rising unemployment. It introduces the concept of the "15-Minute City," a form of "chrono-urbanism," as a response to the challenges posed by the pandemic.

2. “A Review on Electric Vehicles: Technologies and Challenges
Authors: Julio A. Sanguesa, Vicente Torres-Sanz, Piedad Garrido, Francisco J. Martinez and Johann M. Marquez-Barja
Smart Cities 2021, 4(1), 372-404; https://doi.org/10.3390/smartcities4010022
Citations: Crossref (359), Scopus (363), Web of Science (268), Google Scholar (558)
This paper provides an overview of the progress in Electric Vehicles (EVs), focusing on battery technology, charging methods, and emerging research challenges. It also analyzes the global EV market and its future outlook.

3. “IoT in Smart Cities: A Survey of Technologies, Practices and Challenges
Authors: Abbas Shah Syed, Daniel Sierra-Sosa, Anup Kumar and Adel Elmaghraby
Smart Cities 2021, 4(2), 429-475; https://doi.org/10.3390/smartcities4020024
Citations: Crossref (121), Scopus (151), Web of Science (91), Google Scholar (215)
This paper gives an overview of the Internet of Things (IoT) in the context of Smart Cities, discussing the fundamental components, technologies, architectures, networking technologies, and artificial algorithms that underpin IoT-based Smart City systems.

4. “Artificial Intelligence Techniques in Smart Grid: A Survey
Authors: Olufemi A. Omitaomu and Haoran Niu
Smart Cities 2021, 4(2), 548-568; https://doi.org/10.3390/smartcities4020029
Citations: Crossref (76), Scopus (94), Web of Science (57), Google Scholar (120)
This survey paper reviews the utilization of artificial intelligence (AI) techniques in the context of the smart grid. It covers various applications of AI in load forecasting, power grid stability assessment, fault detection, and security issues in the smart grid and power systems.

5. “The Metaverse as a Virtual Form of Smart Cities: Opportunities and Challenges for Environmental, Economic, and Social Sustainability in Urban Futures
Authors: Zaheer Allam, Ayyoob Sharifi, Simon Elias Bibri, David Sydney Jones and John Krogstie
Smart Cities 2022, 5(3), 771-801; https://doi.org/10.3390/smartcities5030040
Citations: Crossref (72), Scopus (75), Web of Science (43), Google Scholar (176)
This paper discusses the concept of the Metaverse, a virtual world introduced by Meta (formerly Facebook), and its potential impact on urban life. It explores how emerging technologies such as AI, Big Data, IoT, and Digital Twins could reshape urban design and services in the context of the Metaverse.

Testimonial

“It was indeed a great and pleasant experience with MDPI regarding our recent publication. The submission process was very straightforward and less time-consuming than the norm. The review process was very fast compared to many other open access journals, which is praiseworthy. The support from the Editorial Office during the revision process was highly useful as well. We look forward to publishing with MDPI in the future, and I will most definitely recommend MDPI to my colleagues and collaborators. – Dr. Luís Rosa, University of Minho

Article in Smart Cities: Mobile Networks and Internet of Things Infrastructures to Characterize Smart Human Mobility

Inside MDPI

MDPI Manchester office, UK Visit


Allie Shi (Editorial Director, MDPI), Stefan Tochev (CEO, MDPI), Jamie Anderson (Manchester Office Manager, MDPI), Michael O’Sullivan (Senior Scientific Officer, MDPI), Hushneara Akhtar, and Becky Castellon (IOAP Team Lead, MDPI), dining out in Manchester, UK.

In October, I visited MDPI’s new office in Manchester. During the visit, I connected with our English Editing (EE) managers, Scientific Officer, members of the Editorial team, the Marketing team, and IOAP Team Lead.

Our Manchester office focuses primarily on EE services and provides local support for the UK market. Additionally, we regularly visit Editorial Board members and participate in local conferences.

I would like to thank Jamie Anderson, Manchester Office Manager, and her team, for their deep commitment to our Manchester staff and to MDPI’s impact on the UK market.

The UK by numbers

The UK is a hub for the world’s top universities, making it a key market for MDPI and the publishing world in general. It is home to two of the top-five-ranked universities globally, 11 in the top 100, and 15 in the top 200.

As a result, the UK plays a key role in MDPI’s global market. As at October 2023, it ranks as the seventh-largest contributor to the total number of papers published by MDPI. We have 3,500 Editorial Board members affiliated with UK institutions, including 34 serving as Editors-in-Chief (EiCs). Our commitment to collaboration with institutions is evident in the UK, where we have successfully established some 60 Institutional Open Access Program (IOAP) agreements with esteemed institutions, such as the University of Oxford, the University of Cambridge, Imperial College London, the University of Edinburgh, and more.

According to InCites Dataset + ESCI for the period 2018–2022, as at October 2023, nearly 65% of UK papers are now published as OA. Just over 10% of total OA publications are by UK authors. UK papers are known for their high quality, with an average of 11 citations per paper. Furthermore, 2.16% of UK papers are in the top 1% of cited papers, and 14.61% are in the top 10% of cited papers, showcasing their impact.

We are currently hiring EEs in various locations worldwide.

English Editing at MDPI

Our English Editing (EE) department consists of two main branches, Quality Control and Learning and Development, reflecting our priorities. We are continuously enhancing the quality of our English Editing services and have raised the relevant standards, which now extend to company-wide communications. English editors participate in international interviews, conduct English assessments, and provide colleagues with presentations on ways to improve their use of written and spoken English.

While expanding, the EE department has proactively refocused its efforts on the quality of our work and how the English Editing department can benefit the company more broadly. We currently have approximately 140 full-time English Editors based across five offices worldwide, supplemented by over 700 freelance English editors.

Our Manchester office serves as the hub for the EE Department, with EE Managers situated there, except for Kurtis Jackson, who serves as the Head of EE and is located in our Basel office. Manchester EEs play a critical role in establishing and developing EE teams in our other offices, overseeing management and recruitment. The EE department plays a vital role in MDPI’s operations, as it is the department that touches every published paper. If this work interests you, I encourage you to explore our available EE positions, whether you are seeking full-time or freelance opportunities.

Testimonials

“MDPI provides an excellent service compared to any other previously used services. It delivers fast and high-quality results but at an affordable price.” – Ardha Apriyanto, University of Potsdam

“In my role as a professor, I consider that MDPI Author Services offer an excellent quality in the editing of Western academic writing while maintaining the required standards of clarity, precision and rigor. Additionally, delivery times are fast compared to other available services.” – Jesus Insuasti, University of Nariño

Read more:

Coming Together for Science

STM and Frankfurt Book Fair

Attending STM

MDPI has been a proud sponsor of the STM Conference for several years. The STM Conference is a dynamic event featuring interactive sessions, expert panellists, idea-sharing, and ample networking opportunities. On 16 October, the event kicked off with arrival drinks, sponsored by MDPI, followed by a welcoming dinner, providing a great chance to connect and network with industry professionals. The following day was filled with speakers, sessions, and further opportunities to connect. STM exemplifies the collaborative spirit of the scientific community, with session topics including achieving open, visible, and impactful research at scale; maintaining research integrity in a rapidly changing world; and exploring the impact of ever-evolving technology in the scholarly community.

Meeting with Web of Science

On a personal note, one of the highlights of STM was a candid and productive conversation with Nandita Quaderi, Editor-in-Chief and SVP at Web of Science. During our discussion, we talked about MDPI, Web of Science, the IJERPH delisting, and ways of moving forward. This open conversation aimed at fostering better collaboration for the future.

“We discussed ways to improve our communication and collaboration.”

I appreciated our frank discussion and felt that Nandita wholeheartedly supports open access. She also expressed her appreciation for the monthly CEO Letter, which she sees as a way to add personality to the MDPI brand and provide insight into the great work we do at MDPI. While we highlighted the positives, we also discussed ways to improve our communication and collaboration moving forward. This meeting alone made the trip worthwhile, and I hope Nandita doesn’t mind my sharing that she found our chat to be “the most honest and constructive discussion” she’s had with someone from MDPI in recent years.

75th Frankfurt Book Fair


Jelena Milojevic (Book Editor, MDPI), Jovana Dubajic (Book Editor, MDPI), Evan Escamilla (Project Manager, MDPI), Laura Wagner (Head of Books, MDPI), and Jenny Knowles (Commissioning Editor, MDPI), at the Frankfurt Book Fair in Frankfurt am Main, Germany.

For the 75th time, the Frankfurter Buchmesse opened its doors in October to celebrate exciting stories and their authors. If you haven’t yet had the chance to visit the Frankfurt Book Fair, I highly recommend it. It’s the largest book fair in the world, attracting thousands of visitors from around the globe. This is the place to gain valuable industry insights from top-class publishing professionals, connect with publishers directly, and learn about the latest trends in publishing.

MDPI Books

Our Books team was also present at the Frankfurt Book Fair, networking and learning from various panels. Did you know that our MDPI Books department publishes OA Books?

The book publishing program includes monographs, book series, edited books and reprints of special issues and topical collections, among other book types.

If you have a book proposal you would like to discuss, please feel free to contact our Books team to understand the benefits and methods of publishing your next book with the OA model.

Closing Thoughts

MDPI Strategy Meeting

As the newly appointed CEO, this is my first year leading the MDPI Senior Management Strategy session. I saw it as an opportunity to explore what MDPI has the potential to become in the next five years. Guided by the vision of its founder and President, Dr. Shu-kun Lin, the company has accomplished remarkable feats over the past 27 years and currently holds the position as the world’s third-largest academic publisher, following Springer Nature and Elsevier.

Our primary objective is to build upon the milestones of the past decades and consolidate MDPI’s position as well-established publishing brand. The two-day meeting emphasized the importance of communicating MDPI’s values more actively via its brand and adopting a straightforward yet impactful approach to managing MDPI as a mature academic publisher.

“Our primary objective is to consolidate MDPI’s position as well-established publishing brand”

As the world’s number one open-access publisher, MDPI has long been a game-changer in the scholarly community, serving millions of authors. The challenge in being a trailblazer is the need to continuously improve and at the same time explore the next blue-ocean strategy, while also maintaining the smooth operation of the business. Our collection model, featuring guest-curated thematic topics in the form of Special Issues, has disrupted the industry. Other publishers closely study us and attempt to replicate our models. The future of this collection model is something we are actively addressing – while, of course, looking ahead to what comes next!

Stefan Tochev
Chief Executive Officer
MDPI AG

20 October 2023
Prof. Dr. Patricia Krawczak Appointed Associate Editor of Section “Manufacturing Processes and Systems” in Materials


We are pleased to announce that Prof. Dr. Patricia Krawczak has been appointed Associate Editor of the Section “Manufacturing Processes and Systems” in Materials (ISSN: 1996-1944). We wish Prof. Dr. Patricia Krawczak every success in her new position, and we look forward to her contributions to the journal.

Name:  Prof. Dr. Patricia Krawczak
Affiliation: IMT Nord Europe, Institut Mines-Télécom, Centre for Materials and Processes, Douai, France
Homepage: https://recherche.imt-nord-europe.fr/personnel/krawczak-patricia/

Interests: advanced composites; polymer composites; composites manufacturing and properties; polymer processing and properties; advanced manufacturing; additive manufacturing and 3D printing; structural health monitoring; recycling; bio-based polymers and composites

Prof. Dr. Patricia Krawczak is a Full Professor at IMT Nord Europe, Douai, France, a top-level graduate school of the engineering and research center affiliated with Institut Mines-Télécom (IMT), the number-one public group of engineering and management graduate schools in France. After having managed the research and education department “Polymers and Composites Technology & Mechanical Engineering” (TPCIM) of IMT Nord Europe for almost 20 years (2000–2019), she has been in charge of the strategic program “Technology Platforms” of the Institut Mines-Télécom (IMT), Palaiseau, France, since 2019.

Prof. Dr. Patricia Krawczak graduated from the engineering graduate school Mines Douai, France, with an engineering degree (1989) and from the University of Lille, France, with a master's degree (1990), a doctor's degree (1993) and postdoctoral habilitation degree (1999). She has co-authored over 400 journal or conference publications and book chapters and is ranked as one of the top 2% of scientists in the world (2021 and 2022 data updates compiled by scientists from Stanford University).

Prof. Dr. Patricia Krawczak is a member of the Management Board of the French Society of Plastics Engineers (SFIP) and a member of the Scientific and Strategic Advisory Board of the French Technical Center for Plastics and Composites (IPC). She is also Knight of the National Order of Academic Palms (decoration for valuable services to the universities in education and teaching) and Knight of the National Order of the Legion of Honor (highest French order of merit, decoration for public service and professional activity with eminent merits).

We are honored to have the opportunity to introduce Prof. Dr. Patricia Krawczak to our editorial team, and we are confident that, with her guidance as our new Associate Editor, we will continue to improve the reputation and quality of Materials.

19 October 2023
Open Access Week 2023 – the Global Drive to Open Continues


MDPI has been a strong proponent of the open access publishing model right from the beginning. As one of the pioneering fully open access publishers, we firmly believe that unrestricted access to research findings forms the foundation for better transparency, efficiency, and quality control across all scientific disciplines.

In December 2022, we reached a significant milestone by surpassing one million articles published. That is one million articles freely available to all, to circulate and build upon!

Offering free and immediate access to scientific papers empowers scientists to examine, validate, replicate, and expand upon existing results. This not only helps prevent redundancy and optimizes how resources are used but also paves the way for innovative new approaches.

The International Open Access Week takes place from 23 to 29 October 2023, providing a unique opportunity to connect the global movement towards open sharing and open science with the progress of policy transformations at the local level.

Our goal, during Open Access Week as well as throughout the year, is to offer resources for educating people about the benefits of open access publishing. The MDPI Blog offers a wealth of information around open access and open science.

Promoting the values of accessibility, transparency, and collaboration

Open access publishing embodies the fundamental values of democratizing knowledge and fostering global accessibility. It aims to break down barriers that have traditionally limited access to scholarly work, ensuring that knowledge is available to all, regardless of their financial or institutional affiliations. 

Discounts are part of our commitment to ensuring there are diverse pathways to Open Access publishing for researchers worldwide. MDPI supports scientific communities in several different ways. 

One of the key strengths of open access publishing lies in its ability to facilitate interdisciplinary research. By removing paywalls and promoting the sharing of knowledge across disciplines, OA encourages collaboration and innovation. Researchers from diverse fields can access and build upon each other's work, fostering a holistic approach to addressing complex global challenges. 

Funders' policies are getting aligned with open science

Governments, institutions, and funding agencies have recognized the transformative potential of open access and have implemented policies to promote it. These policies often mandate that publicly funded research should be made openly accessible. Such initiatives have accelerated the growth of open access repositories and journals, reinforcing the commitment to open access principles. Check our spotlights on OA policies in the USEU and China

Open access publishing is continually evolving, with innovative and community-driven models and technologies shaping its future. Initiatives like "Plan S" and "cOAlition S" promote the adoption of OA publishing from the national funders’ perspective by requiring grantees to publish their research openly. A new policy announced by the US administration last year requires that, as of January 2026, all US federally funded research be made freely and immediately available after publication. 

Additionally, preprint servers such as MDPI's Preprints.org, which allow researchers to share their findings before formal peer review, have gained popularity, enhancing the speed at which new knowledge is disseminated. The rise of blockchain technology is also being explored to ensure transparency and authenticity in scholarly publishing. 

For more than twenty years, open access scholarly publishing has been revolutionizing academia by promoting the values of accessibility, transparency, and collaboration. Its support for interdisciplinary research, evolving policies, and innovative practices all contribute to its growing influence in the global research community. As open access continues to expand, it holds the potential to democratize knowledge, advance science, and drive positive societal change. 

MDPI is proud to be a leader in the transition to open access.

11 October 2023
Materials | Highly Cited Papers in 2021


It is our great honor to present some of the more highly cited articles published by Materials (ISSN: 1996-1944) in 2021. We would like to take this opportunity to acknowledge the outstanding individuals and teams whose work inspires fellow researchers and profoundly influences the field of materials science. We welcome you to read these outstanding works listed below:

“An Injectable Chitosan-Based Self-Healable Hydrogel System as an Antibacterial Wound Dressing”
by Xiaoyu Wang, Rijian Song, Melissa Johnson, Sigen A, Zhonglei He, Cameron Milne, Xianqing Wang, Irene Lara-Sáez, Qian Xu and Wenxin Wang
Materials 2021, 14(20), 5956; https://doi.org/10.3390/ma14205956
Available online: https://www.mdpi.com/1996-1944/14/20/5956

 “Current Trends in Automotive Lightweighting Strategies and Materials”
by Frank Czerwinski
Materials 2021, 14(21), 6631; https://doi.org/10.3390/ma14216631
Available online: https://www.mdpi.com/1996-1944/14/21/6631

“Additively Manufactured Zirconia for Dental Applications”
by Hiroto Nakai, Masanao Inokoshi, Kosuke Nozaki, Keiji Komatsu, Shingo Kamijo, Hengyi Liu, Makoto Shimizubata, Shunsuke Minakuchi, Bart Van Meerbeek, Jef Vleugels et al.
Materials 2021, 14(13), 3694; https://doi.org/10.3390/ma14133694
Available online: https://www.mdpi.com/1996-1944/14/13/3694

“A Stretchable, Self-Healable Triboelectric Nanogenerator as Electronic Skin for Energy Harvesting and Tactile Sensing”
by Xi Han, Dongjie Jiang, Xuecheng Qu, Yuan Bai, Yu Cao, Ruizeng Luo and Zhou Li
Materials 2021, 14(7), 1689; https://doi.org/10.3390/ma14071689
Available online: https://www.mdpi.com/1996-1944/14/7/1689

 “Additive Manufacturing Processes in Medical Applications”
by Mika Salmi
Materials 2021, 14(1), 191; https://doi.org/10.3390/ma14010191
Available online: https://www.mdpi.com/1996-1944/14/1/191

 “Behaviour and Properties of Eco-Cement Pastes Elaborated with Recycled Concrete Powder from Construction and Demolition Wastes”
by Laura Caneda-Martínez, Manuel Monasterio, Jaime Moreno-Juez, Sagrario Martínez-Ramírez, Rosario García and Moisés Frías
Materials 2021, 14(5), 1299; https://doi.org/10.3390/ma14051299
Available online: https://www.mdpi.com/1996-1944/14/5/1299

 “Antioxidants: Classification, Natural Sources, Activity/Capacity Measurements, and Usefulness for the Synthesis of Nanoparticles”
by Jolanta Flieger, Wojciech Flieger, Jacek Baj and Ryszard Maciejewski
Materials 2021, 14(15), 4135; https://doi.org/10.3390/ma14154135
Available online: https://www.mdpi.com/1996-1944/14/15/4135

 “Charge Carrier Processes and Optical Properties in TiO2 and TiO2-Based Heterojunction Photocatalysts: A Review”
by Stefano Lettieri, Michele Pavone, Ambra Fioravanti, Luigi Santamaria Amato and Pasqualino Maddalena
Materials 2021, 14(7), 1645; https://doi.org/10.3390/ma14071645
Available online: https://www.mdpi.com/1996-1944/14/7/1645

 “Properties and Classification of Diamond-Like Carbon Films”
by Naoto Ohtake, Masanori Hiratsuka, Kazuhiro Kanda, Hiroki Akasaka, Masanori Tsujioka, Kenji Hirakuri, Atsushi Hirata, Tsuguyori Ohana, Hiroshi Inaba, Makoto Kano et al.
Materials 2021, 14(2), 315; https://doi.org/10.3390/ma14020315
Available online: https://www.mdpi.com/1996-1944/14/2/315

 “Thermal Conductivity and Viscosity: Review and Optimization of Effects of Nanoparticles”
by Kevin Apmann, Ryan Fulmer, Alberto Soto and Saeid Vafaei
Materials 2021, 14(5), 1291; https://doi.org/10.3390/ma14051291
Available online: https://www.mdpi.com/1996-1944/14/5/1291

2 October 2023
MDPI Insights: The CEO's Letter #4 - MDPI Presence in China

Welcome to the MDPI Insights: The CEO's Letter.

In these monthly letters, I will showcase two key aspects of our work at MDPI: our commitment to empowering researchers and our determination to facilitating open scientific exchange.


Opening Thoughts

Open Access in China

It is Saturday, 23 September, and I have just returned from an unforgettable 12-day trip to China, visiting our main offices in Beijing and Wuhan. In the wake of a packed and very enjoyable agenda of internal and external meetings, I would like to use this edition of the CEO Letter to showcase how MDPI supports the scholarly community in China.

Coincidentally, Jack McKenna, Communications Associate from MDPI’s corporate content team, has just released a blog article discussing China’s open access (OA) policy. It is a timely read, providing a concise overview of the development of the OA movement in China and reflecting on its future. I shall draw some content from Jack’s piece and use this edition of the CEO Letter to highlight the various ways in which MDPI is involved in this market. And it would be remiss of me not to include some pictures and highlights from my travels!

Open Access Policy in China

As per Jack’s post, in 2020, China became the world’s leading producer of research articles. Today, China is experiencing a “substantial growth rate in OA [Open Access] publication”. This growth is supported by the State’s commitment to research & development and its policy “requiring the promotion of open science”.

Over the past two decades, there have been gradual developments in China’s OA framework, with repositories and platforms being developed in a consistent manner. Currently, key institutions across China – including the National Science Library, the National Science and Technology Library, and the Natural Science Foundation of China – support OA. The State aims to establish consistent policies across government agencies – a framework for a more encompassing embrace of OA across institutions.

In China, the number of subscription-only articles decreased by nearly 30% over the 10-year period of 2011–2021, while gold OA increased by 22%. Between 2017 and 2020 alone, China published 800,921 academic papers in an OA format.

In 2023, as the leading publisher of academic research, China is pursuing “self-reliance”. Therefore, the State will be establishing consistent policies across government agencies, including those related to OA. Additionally, it will want to ensure that Chinese people can access the research that is supported by Chinese funding and produced by Chinese academics. For this reason, “Open Access is a matter of priority in China”.

MDPI Offices in China

 While the history of MDPI begins in Basel, Switzerland, the story of MDPI’s founder is very much rooted in China. Dr. Shu-kun Lin, Founder and President of MDPI, graduated with a BSc from Wuhan University in 1982. He also studied physical chemistry at the Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (1982–1986; MSc in 1985), and at the University of Louisville, USA (1987–1989). Dr. Lin completed his doctorate in organic chemistry at the Swiss Federal Institute of Technology (ETH-Zürich) in 1992.


Stefan Tochev (CEO, MDPI) at MDPI’s Wuhan office.

In 2002, MDPI’s Basel headquarters moved to Matthäusstrasse 11, 4052 Basel, and Dr. Lin opened an editorial office in Qingdao, China, which launched the journal Marine Drugs in the following year. Below is a list of MDPI’s current offices in China and their respective dates of inauguration:

  • 2008: Beijing (Tongzhou, Haidian)
  • 2013: Wuhan (Hankou, Guanggu)
  • 2019: Tianjin
  • 2021: Dalian
  • 2021: Nanjing

Our Strength is in Our People

With over 6,000 MDPI staff, across 20 offices in 11 countries, MDPI is able to offer authors responsive and efficient round-the-clock support, enabling a rapid publication process.

In my experience, stakeholders are genuinely surprised when they realize the extent of our global operations. My response is to reiterate that our people are our strength. This is why we have fast and efficient processes and top-notch responsiveness. Our global presence ensures that your manuscript is constantly attended to, rather than sitting on someone’s desk. We prioritize our authors’ needs and act quickly to move things through the various stages of publication. MDPI is built on speed, convenience, and competence, which I believe are core pillars for success in any industry. We continually strive to improve our systems and processes on the basis of these core strengths. We literally have over 6,000 staff worldwide dedicated to serving your needs. It’s not magic: it’s people; it’s real.

Impactful Research

MDPI Awards

To support the academic community, and especially young researchers, and also to enhance communication among scientists, MDPI journals offer various awards in specific fields. We serve the scientific community by funding research to facilitate the development of sustainable global solutions through our annual World Sustainability Award and Emerging Sustainability Leader Award.

In 2022, MDPI made awards totalling over US$1 million in recognition and support of researchers worldwide.

Across our journal catalogue, we have granted over 2,000 awards to recognize and support researchers from all disciplines. Since 2016, these awards have served as a source of recognition, acknowledging the impact of research by heightening the influence of talented individuals. The award types mainly include the Young Investigator Award, the Best PhD Thesis Award, the Best Paper Award, and the Outstanding Reviewer Award.

To learn more about MDPI Awards and to find out which are currently available, please click here.

MDPI Awards to Scholars from China

Since 2021, there have been 23 Best Paper Awards granted to authors affiliated with Chinese institutions, identifying their papers as having high-quality scientific impact. A total of 45 Chinese scholars have received awards such as the Young Investigator Award, the Best PhD Thesis Award, the Outstanding Reviewer Award, and the Tu Youyou Award, among others. Prizes for these awards include MDPI grants for paid publications, totalling over CHF 70,000 for scholars affiliated with Chinese institutions.

MDPI’s Tu Youyou Award


Prof. Tu Youyou (left), Dr. Shu-Kun Lin (President, MDPI).

In 2015, Professor Tu Youyou was awarded the Nobel Prize in Physiology or Medicine “for her discoveries concerning a novel therapy against Malaria.” In order to commemorate Professor Tu’s contributions to human health and to promote the passion and spirit conveyed by her experiences, MDPI in 2016 established the ‘Tu Youyou Award’, which runs biennially to recognize outstanding scholars dedicated to the research of natural products and medicinal chemistry.

The 2022 Tu Youyou Award was granted to Prof. Dr. Xiaoguang Lei of Peking University. Click here to access the interview with the winner.

2015 Nobel Prize for Medicine Awarded to Professor Youyou Tu

Professor Tu’s work was celebrated in a Special Issue from Molecules on the occasion of her 80th birthday. The Special Issue: 'Artemisinin (Qinghaosu): Commemorative Issue in Honor of Professor Youyou Tu on the Occasion of her 80th Anniversary” was created five years before she won the Nobel Prize, highlighting the visibility MDPI provides researchers and their work.

Highly Cited Articles by Chinese Scholars Published in MDPI

Click here to access the most cited MDPI papers published by scholars affiliated with Chinese institutions. This list presents the most influential research from the more than 287,000 MDPI papers published by Chinese scholars. With over 9 million total citations, I encourage you to maximize your visibility and impact by publishing with MDPI, the number one most cited open access publisher.

Read more:

Inside MDPI

Stefan Tochev (CEO, MDPI) with the Beijing Marketing team.

Marketing Department in China

During my visit to our offices in Beijing and Wuhan, I had the opportunity to meet with, and to present to, our local marketing teams. These teams are responsible for various journal-related and corporate promotional activities, including newsletters, conferences, seminars, author training, journal awards, content creation, digital marketing, and social media.

I was pleased by the ambition and curiosity of our marketing colleagues. They showed a strong desire to collaborate and acquire knowledge and tactics to effectively market and promote MDPI-journal-related activities. I presented some of the principles and objectives that we apply in the Corporate Marketing and Communications department, and used the opportunity to strengthen our collaborative communications across offices.

Stefan Tochev (CEO, MDPI) with the Wuhan Marketing team.

Coming Together for Science

Collaborations, Scholarships and Meetings

MDPI maintains partnerships with nearly 190 learned societies and over 800 institutions and consortia, helping to facilitate the transition to OA publishing. Our commitment to working with institutions is evident in China, where we have successfully established over 35 Institutional Open Access Programs (IOAP) with esteemed institutions such as the Tsinghua University, Huazhong University of Science and Technology, and Shanghai Jiao Tong University.

Our institutional partnerships, waiver programs, and article processing cost discounts create diverse pathways to OA publishing for researchers worldwide.

Scholarships in China

Since 2021, several MDPI journals (Sensors, Photonics, Coatings, Materials, Energies, and Journal of Fungi) have funded full scholarships for four Master’s and five Ph.D. projects in China. These scholarships align with Tianjin University, Wuhan University of Technology, Central South University, the Chinese Academy of Sciences, and the China University of Petroleum (Beijing).

Meeting with the Society of Chinese University Journals (CUJS)


Prof. Tieming Zhang (President of CUJS, centre) and MDPI colleagues at CUJS office.

I am pleased to have participated in some highly productive meetings during my visit to China, including one with the Society of Chinese University Journals (CUJS). The meeting involved Prof. Tieming Zhang (President of CUJS), Assoc. Prof. Xin Zhang (Vice President and Secretary General), and Dr. Fei Gao (Executive Member of CUJS). Alongside my colleagues Dr. Guoshi Liu, Dr. Giulia Stefenelli, and Anita Sun, I represented MDPI and held an open discussion to address any questions regarding OA and MDPI.

We discussed several methods for collaboration, including a workshop on the future of peer review, MDPI sponsoring a funding grant for early-career researchers, and transitioning journals from diamond to gold OA. I am thankful for the opportunity to have met our colleagues at CUJS in person and feel very confident about our future collaborations in support of OA publishing in China.

MDPI hosts free academic seminars, author training sessions, and academic conferences as part of its commitment to enrich and support the scholarly community. CUJS often stages academic events (e.g., conferences, editor training, and editor competitions), and I believe there are great opportunities for CUJS and MDPI to collaborate accordingly.

Meeting with National Science Library, Chinese Academy of Sciences (NSLC)


Stefan Tochev (CEO, MDPI), Dr. Giulia Stefenelli (Chair of Scientific Officers, MDPI), Anita Sun (PR Manager, MDPI) and Dr. Guoshi Liu (Managing Director, MDPI) at the National Science Library, Chinese Academy of Sciences.

We also visited the NSLC Director, Xiwen Liu, and colleagues Ying Jin, Zhesi Shen, and Sichao Tong. Following our introductions, we gave a presentation on the history and editorial process at MDPI, discussing specific details related to MDPI’s business and data. We highlighted the status of our  IOAP collaborations in China and the makeup of our author base, specifically in China, and drew attention to the fact that MDPI has published research by authors from every country in the world. We then discussed the design indicators, calculation methods and implementation purposes of the ‘Early Warning Journal List’ and how we can have open communication to provide any data regarding MDPI journals. I am pleased to report that we reached a consensus on future communications, and am grateful to NSLC for hosting us in their offices.

In-person meetings with stakeholders provide an invaluable opportunity to communicate what MDPI is about and the various ways in which we serve the scholarly community. While digital marketing and online communication are essential, they are no replacement for the understanding and trust that come about through in-person interactions.

The Numbers

As at September 2023, China holds the largest position in MDPI’s global market, ranking as the largest contributor to the total number of papers published by MDPI.

At this point in time, there were more than 847,000 China mainland scholars who have published with MDPI, 51 of whom are Section-Editors-in-Chief (SEiC) of MDPI journals, with seven serving as Editors-in-Chief (EiCs) for journals such as Air, Big Data and Cognitive Computing, Blockchains, Future, Nanoenergy Advances, and Targets.

Our growth and presence in China are a true testament to the service we provide to the scholarly community, and to the relationships we foster through collaborative activities. We look forward to continuing to support the growth of the scholarly community in China, providing a valuable and trusted experience with MDPI.

Closing Thoughts

Final Reflections on our MDPI Offices in Beijing and Wuhan


Stefan Tochev (CEO, MDPI), Dr. Constanze Schelhorn (Indexing Manager, MDPI), Jiale Shang (Admin, Tongzhou, MDPI) at Beijing Capital International Airport, Beijing.

I spent approximately two weeks visiting some of our offices in China, and the first word that comes to mind when describing my experience is ‘hospitality.’ My colleagues and I were met with enthusiasm and delight at the airport by the Tongzhou Admin team (thank you, Jiale Shang, and thank you, Eric Wang, for keeping us organized on this trip!) and were taken care of with great attention. From hotels to transportation, dinners, and meetings, our stay was catered for perfectly.

Perhaps this is where MDPI’s focus on customers and service originates. At our core, we are a service company that provides a publishing platform for its authors. It’s therefore no surprise that authors consistently rate their experience with MDPI very highly.

95% of submitting authors rate their overall experience with the MDPI publication process as Excellent or Good (Springer Nature report 90%).

91% of submitting authors rate their overall experience with the MDPI peer review process as Excellent or Good.

Speed/Efficiency and Editorial Relationship are two key reasons underlying this high satisfaction score. ‘Editorial Relationship’ can be further explored, but in the past month, the most commonly noted aspects were the professionalism, kindness, availability, communicativeness, and personalized assistance provided by our editorial staff throughout the process. These attributes are at the core of our work across all our offices and continents.

Hospitality and Service

Just as our Chinese colleagues strove to keep us engaged by showing us the city sights (thank you, Thea Pan, and Jason Wu from the Wuhan Marketing team!) and sharing a variety of wonderful meals, our editorial staff are committed to serving our authors throughout their publishing journey. Our aim is to place the author at the centre of everything we do, eager to welcome our ‘guests’ and provide them with a pleasant publishing experience.

I asked my colleague Francis Wu (Senior Publisher, Wuhan office) where this hospitality originates. He responded that it is part of Chinese culture. I reflected long and deep on this answer. China is a vast country, and when visitors arrive, hosts want to ensure they feel welcomed and taken care of in order to maximize their time and visit. I can’t think of a better analogy for how I would want our authors to feel when they visit MDPI for their publishing needs. A company culture that prioritizes service, something that goes beyond products and productivity, and focuses on the overall experience. Over 6,000 people, across all MDPI offices, are ready, willing and able to go the extra mile for their colleagues and their customers. This is something I am truly proud of.

Stefan Tochev
Chief Executive Officer
MDPI AG

18 September 2023
Meet Us at the 2023 Asia-Pacific International Symposium on Aerospace Technology, 16–18 October 2023, Lingshui, Hainan, China


The 2023 Asia-Pacific International Symposium on Aerospace Technology (APISAT2023) will be held from 16 to 18 October 2023, in Lingshui, Hainan, China. The conference is co-hosted by the Chinese Society of Aeronautics and Astronautics, Tsinghua University, AVIC Aerodynamics Research Institute, Beihang University and Civil Aviation University of China. It is co-organized by the Chinese Society of Aeronautics and Astronautics, Royal Aeronautical Society, The Japan Society for Aeronautical and Space Sciences and KSAS.

Topics include the following:

  • Aerodynamics and design;
  • Structures and materials;
  • Dynamics/control/avionics;
  • Combustion and propulsion.

The following MDPI journals will be represented:

  • Aerospace;
  • Invention;
  • Drones;
  • Materials;
  • Energies;
  • Machines;
  • Micromachines;
  • Automation.
If you are attending this conference, please feel free to start an online conversation with us. Our delegates look forward to meeting you in person at booth #1 and answering any questions that you may have. For more information about the conference, please visit the following link: https://www.apisat2023.com/.

11 September 2023
Materials | Editor’s Choice Articles in 2023 in the Section “Materials Physics”


The "Materials Physics" Section provides a forum for the rapid publication of original works that will significantly advance our current understanding of materials or unveil novel aspects of material physical properties with respect to target applications.

The Section will comprise, but will be not limited to, contributions on materials growth and processing techniques, microstructural and mechanical engineering, advanced characterization methods, surface and interface engineering of nanostructured and functional materials including metals and alloys, ceramics and coatings, optical and photonic materials, low-dimensional materials, metal oxides and semiconductors for energy and environmental applications, plasmonics and metamaterials, magnetic materials, superconducting and quantum materials, ferroelectrics, multiferroics and magnetoelectrics, thermoelectric materials, polymers, metal-organic materials, and amorphous solids.

We are pleased to present the 2023 Editor’s Choice Articles, a carefully curated list of high-quality articles from the “Materials Physics” Section listed below:

“Characterization of Filigree Additively Manufactured NiTi Structures Using Micro Tomography and Micromechanical Testing for Metamaterial Material Models”
by Thomas Straub, Jonas Fell, Simon Zabler, Tobias Gustmann, Hannes Korn and Sarah C. L. Fischer
Materials 202316(2), 676; https://doi.org/10.3390/ma16020676
Available online: https://www.mdpi.com/1996-1944/16/2/676

“Prediction of Novel Ultrahard Phases in the B–C–N System from First Principles: Progress and Problems”
by Vladimir L. Solozhenko and Samir F. Matar
Materials 202316(2), 886; https://doi.org/10.3390/ma16020886
Available online: https://www.mdpi.com/1996-1944/16/2/886

“Effect of Ni Substitution on Thermoelectric Properties of Bulk β-Fe1−xNixSi2 (0 ≤ x ≤ 0.03)”
by Sopheap Sam, Soma Odagawa, Hiroshi Nakatsugawa and Yoichi Okamoto
Materials 202316(3), 927; https://doi.org/10.3390/ma16030927
Available online: https://www.mdpi.com/1996-1944/16/3/927

“Correlation-Driven Topological Transition in Janus Two-Dimensional Vanadates”
by Ghulam Hussain, Amar Fakhredine, Rajibul Islam, Raghottam M. Sattigeri, Carmine Autieri and Giuseppe Cuono
Materials 202316(4), 1649; https://doi.org/10.3390/ma16041649
Available online: https://www.mdpi.com/1996-1944/16/4/1649

“Epitaxial CdSe/PbSe Heterojunction Growth and MWIR Photovoltaic Detector”
by Lance L. McDowell, Milad Rastkar Mirzaei and Zhisheng Shi
Materials 202316(5), 1866; https://doi.org/10.3390/ma16051866
Available online: https://www.mdpi.com/1996-1944/16/5/1866

“Hexagonal Boron Nitride for Photonic Device Applications: A Review”
by Shinpei Ogawa, Shoichiro Fukushima and Masaaki Shimatani
Materials 202316(5), 2005; https://doi.org/10.3390/ma16052005
Available online: https://www.mdpi.com/1996-1944/16/5/2005

“Ferroelectricity and Oxide Reliability of Stacked Hafnium–Zirconium Oxide Devices”
by Ruo-Yin Liao, Hsuan-Han Chen, Ping-Yu Lin, Ting-An Liang, Kuan-Hung Su, I-Cheng Lin, Chen-Hao Wen, Wu-Ching Chou, Hsiao-Hsuan Hsu and Chun-Hu Cheng
Materials 202316(9), 3306; https://doi.org/10.3390/ma16093306
Available online: https://www.mdpi.com/1996-1944/16/9/3306

“Recent Advances in Magnetic Polymer Composites for BioMEMS: A Review”
by Zhengwei Liao, Oualid Zoumhani and Clementine M. Boutry
Materials 202316(10), 3802; https://doi.org/10.3390/ma16103802
Available online: https://www.mdpi.com/1996-1944/16/10/3802

“Cleaning Strategies of Synthesized Bioactive Coatings by PEO on Ti-6Al-4V Alloys of Organic Contaminations”
by Avital Schwartz, Alexey Kossenko, Michael Zinigrad, Viktor Danchuk and Alexander Sobolev
Materials 202316(13), 4624; https://doi.org/10.3390/ma16134624
Available online: https://www.mdpi.com/1996-1944/16/13/4624

“High-Pressure Synthesis and the Enhancement of the Superconducting Properties of FeSe0.5Te0.5
by Mohammad Azam, Manasa Manasa, Tatiana Zajarniuk, Ryszard Diduszko, Tomasz Cetner, Andrzej Morawski, Jarosław Więckowski, Andrzej Wiśniewski and Shiv J. Singh
Materials 202316(15), 5358; https://doi.org/10.3390/ma16155358
Available online: https://www.mdpi.com/1996-1944/16/15/5358

We would like to take this opportunity to thank all of the research groups that submitted to Materials (ISSN: 1996-1944). We would appreciate it if you could circulate this document among your colleagues and network. Furthermore, the following opportunities for collaboration may be of interest:

Submitting a manuscript:
This Section is currently open for submissions. Papers may be submitted via the following link: https://susy.mdpi.com/user/manuscripts/upload?journal=materials.

Launching a Special Issue:
You have the opportunity to propose new topics and edit a Special Issue together with experts in the field: https://www.mdpi.com/journalproposal/sendproposalspecialissue/materials.

Joining the Editorial Board:
If you are an active researcher in the field of materials physics and are interested in joining the Editorial Board, please do not hesitate to get in touch (materials@mdpi.com).

Materials Editorial Office

8 September 2023
Materials 2024 Travel Award—Open for Applications


We are pleased to announce that Materials (ISSN: 1996-1944) will be granting the Travel Award to two junior scientists. The applications will be assessed by an Evaluation Committee consisting of senior scholars from the Materials Editorial Board.

This award provides financial support for the winners to attend an international conference in the field of materials science and engineering to be held in 2024, in order to hold a presentation, present a poster, or both.

Candidate Requirements:

  • Postdoctoral fellow or Ph.D. student.
  • Plans to attend an international conference in 2024 (oral presentation or poster).

Required Application Documents:

  • Information of the conference the applicant is planning to attend and the abstract that will be submitted.
  • Curriculum vitae and list of publications.
  • Justification letter describing the focus of the research (max. 800 words).
  • Letter of recommendation from the supervisor, research director, or department head, which also confirms the applicant’s status as a postdoctoral fellow/PhD student.

The winners (two awardees) will each be awarded CHF 800 and a certificate.

Please submit your applications (https://www.mdpi.com/journal/materials/awards/submit/2418) for the Materials 2024 Travel Award online by 30 November 2023. Prizes will be awarded at the end of January 2024 and announced on the Materials website.

Materials Editorial Office

8 September 2023
Materials 2023 Best Ph.D. Thesis Award—Open for Applications


Materials (ISSN: 1996-1944) is currently accepting applications for the 2023 Best Ph.D. Thesis Award. This award is held to reward the academic community, especially young researchers, and enhance communication among scientists. This prize will be awarded to a Ph.D. student or doctor who has produced a highly anticipated academic thesis.

The prize includes:

  • CHF 800;
  • A certificate;
  • An offer to publish one paper free of charge in Materials after peer review before the end of 2024.

To find out more information about the award and how to apply for candidates, please click here: https://www.mdpi.com/journal/materials/awards/2482. To request further information, please contact the Materials Editorial Office (materials@mdpi.com).

Materials Editorial Office

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