Review
Chemistry, Analytical
Elena Zhbankova, Abdukodir Khakimov, Ekaterina Markova, Yuliya Gaidamaka, Yingjie Jay Guo
Summary: This review paper highlights the large gaps between the models used for analyzing the Age of Information (AoI) metric and the technical specifics of modern and future wireless cellular systems. Existing models do not fully consider the service processes, multi-channel random access schemes, and temporal correlations in state monitoring applications, limiting their accuracy in evaluating the performance of mMTC and URLLC services in 5G systems.
Article
Medicine, General & Internal
Christian Mareth, Ulrich K. Fetzner, Christoph H. Saely
Summary: This study aimed to explore the dissemination and practical applications of psychoneuroimmunology (PNI) research findings among clinical practitioners. The results showed that although there is some awareness of PNI among medical practitioners, there are barriers inhibiting the implementation of research findings in treatment practices.
Article
Engineering, Biomedical
Yongmao Zhang, Hua Zhao, Dan Peng
Summary: Smart classrooms, enabled by Internet information technology, are an important foundation for smart education and are currently a hot trend in educational information innovation. This article proposes exploratory research methods for smart sports classrooms in IA colleges and universities, and finds that students have a positive attitude towards the smart sports classroom teaching model, which is beneficial for its growth.
APPLIED BIONICS AND BIOMECHANICS
(2022)
Article
Physics, Multidisciplinary
Mohamed A. Abd-Elmagid, Harpreet S. Dhillon
Summary: This paper studies a common setting of gossip networks where a source node forwards its measurements about an observed physical process to monitoring nodes through independent Poisson processes. The freshness of the information available at each monitoring node is quantified in terms of Age of Information (AoI). The focus is on characterizing the higher-order moments of the age processes in this setting, rather than just the average values. The analytical results highlight the importance of considering the higher-order moments in the implementation and optimization of age-aware gossip networks.
Review
Public, Environmental & Occupational Health
Zhe Li, Weiguang Zhang, Yuting Duan, Yue Niu, Yizhi Chen, Xiaomin Liu, Zheyi Dong, Ying Zheng, Xizhao Chen, Zhe Feng, Yong Wang, Delong Zhao, Xuefeng Sun, Guangyan Cai, Hongwei Jiang, Xiangmei Chen
Summary: Biological age (BA) is a model that evaluates the function of aging individuals and provides a more accurate measure of human aging than chronological age (CA). The choice of biomarkers, standards, and statistical methods can influence BA estimation approaches. Traditional methods include MLR, PCA, KDM, and deep learning, and this review summarizes the markers used for each organ/system and the literature on BA research. Future research should focus on exploring new aging markers, standardizing marker selection, and developing new methods for building BA models.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Biotechnology & Applied Microbiology
Samuel G. Rodriques, Linlin M. Chen, Sophia Liu, Ellen D. Zhong, Joseph R. Scherrer, Edward S. Boyden, Fei Chen
Summary: The RNA timestamps method infers the age of individual RNAs in RNA-seq data using RNA editing, allowing determination of when the promoter was active and clustering single cells based on past transcriptional activity timing.
NATURE BIOTECHNOLOGY
(2021)
Review
Multidisciplinary Sciences
Hanchen Wang, Tianfan Fu, Yuanqi Du, Wenhao Gao, Kexin Huang, Ziming Liu, Payal Chandak, Shengchao Liu, Peter Van Katwyk, Andreea Deac, Anima Anandkumar, Karianne Bergen, Carla P. Gomes, Shirley Ho, Pushmeet Kohli, Joan Lasenby, Jure Leskovec, Tie-Yan Liu, Arjun Manrai, Debora Marks, Bharath Ramsundar, Le Song, Jimeng Sun, Jian Tang, Petar Velickovic, Max Welling, Linfeng Zhang, Connor W. Coley, Yoshua Bengio, Marinka Zitnik
Summary: Artificial intelligence (AI) is increasingly used in scientific discovery, providing assistance in hypothesis generation, experimental design, data analysis, and insight generation. Recent breakthroughs include self-supervised learning and geometric deep learning, which enhance model accuracy and efficiency. Generative AI methods can generate diverse designs through analysis of various data modalities. Despite progress, challenges such as data quality and stewardship remain, making it critical to develop foundational algorithmic approaches for AI innovation.
News Item
Multidisciplinary Sciences
Davide Castelvecchi
Summary: The retraction from Nature is a setback for Microsoft's approach to quantum computing, but researchers are still searching for exotic quantum states.
Article
Health Care Sciences & Services
Evelyn R. Hermes-DeSantis, Robert T. Hunter, Julie Welch, Roma Bhavsar, Daniel Boulos, Marie-Ange Noue
Summary: This survey found that healthcare professionals prioritize accuracy and ease of use when obtaining medication information. The main search questions include dosing and administration, drug-drug interactions, adverse events and safety, clinical practice guidelines, and disease state information. Pharmaceutical company medical information departments are sometimes used as a resource, but challenges include long response times and unfamiliarity with the websites.
JOURNAL OF MEDICAL INTERNET RESEARCH
(2021)
Review
Engineering, Environmental
Siming Guo, Qingjun Yu, Shunzheng Zhao, Xiaolong Tang, Ya Wang, Yiming Ma, Yuhan Long, Honghong Yi
Summary: Sulfocompounds in flue gas can affect pipeline stability and air quality. Porous materials like carbon-based materials, molecular sieves, metal oxides, and MOFs can be used to adsorb these compounds. Adsorption mechanisms and regenerating methods for porous materials are summarized in this study.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Business, Finance
David Easley, Marcos Lopez de Prado, Maureen O'Hara, Zhibai Zhang
Summary: Understanding modern market microstructure phenomena requires large amounts of data and advanced mathematical tools. Machine learning can be applied to microstructural research. Microstructure measures continue to provide insights into the price process in current complex markets, with some features showing high explanatory power but low predictive power, while others exhibit the opposite relationship.
REVIEW OF FINANCIAL STUDIES
(2021)
Editorial Material
Multidisciplinary Sciences
Carrie Arnold
Summary: Numerous companies offer remote, automated workforce for conducting experiments 24/7.
Article
Engineering, Electrical & Electronic
Antzela Kosta, Nikolaos Pappas, Anthony Ephremides, Vangelis Angelakis
Summary: The study investigates information freshness in a status update communication system, examining properties and general formulas related to the age of information (AoI) process. Three single-server system models are considered, resulting in closed-form expressions for the generating functions and stationary distributions of AoI and the peak age of information (PAoI). A methodology for analyzing general non-linear age functions for such systems is proposed, utilizing power series representations of functions.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Wanting Lyu, Yue Xiu, Jun Zhao, Zhongpei Zhang
Summary: In this paper, a reconfigurable intelligent surface (RIS)-assisted simultaneous wireless information and power transfer (SWIPT) network is studied. The age of information (AoI) is considered to measure the freshness of the data packets at the information receiver. A scheduling scheme is formulated to minimize the sum AoI of the information users while ensuring sufficient power for energy harvesting users. The proposed alternating optimization (AO) algorithm and successive convex approximation (SCA) algorithm are employed to handle the coupling and non-convexity of the optimization problems, respectively. Numerical simulations demonstrate the improvement in terms of AoI and the trade-off between age of information and energy harvesting.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Review
Polymer Science
Sergiu Coseri
Summary: Cellulose has clear advantages over synthetic fibers in the current global context, with great potential to substitute polluting fossil-based materials harmful to ecosystems. Research in cellulose is mainly aimed at industrial needs worldwide, with Romanian researchers making contributions in cellulose characterization and functionalization, as well as the applications of cellulose-based materials.
Review
Chemistry, Physical
Ritesh Haldar, Christof Woell
Summary: Functional, porous metal-organic frameworks (MOFs) are a flexible and diverse class of crystalline, porous materials that have attracted attention for advanced applications. Hierarchical assemblies and creation of MOF/MOF heterointerfaces are important for exploiting photophysical properties. Layer-by-layer (lbl) methods offer advantages in manufacturing superstructures with length scales beyond the MOF pore size, allowing for extended isoreticular approach and compositional diversity in MOFs.
Article
Chemistry, Multidisciplinary
Stefan M. Marschner, Ritesh Haldar, Olaf Fuhr, Christof Woell, Stefan Braese
Summary: This study reported the successful synthesis of a series of 5,15-bis(4-ethoxycarbonylphenyl)porphyrin derivatives through Suzuki and Sonogashira cross-coupling reactions, fully characterized and systematically investigated for their suitability in synthesizing surface-anchored MOF thin films.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Physics, Condensed Matter
Mariana Kozlowska, Yohanes Pramudya, Marius Jakoby, Shahriar Heidrich, Liuyang Pan, Bryce S. Richards, Ian A. Howard, Christof Woell, Ritesh Haldar, Wolfgang Wenzel
Summary: This study demonstrates the impact of interchromophore interactions on the photophysical properties of a surface-anchored MOF, emphasizing the significance of chromophore interactions in material properties.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Spectroscopy
Marit Kjaervik, Paul M. Dietrich, Andreas Thissen, Joerg Radnik, Alexei Nefedov, Carsten Natzeck, Christof Woell, Wolfgang E. S. Unger
Summary: Surface-supported metal-organic frameworks HKUST-1 were used to develop a near ambient pressure XPS approach to investigate interaction with water, methanol, and pyridine atmospheres. The peak shapes in the photoelectron spectra were found to depend on charge compensation efficiency, with reduced copper observed when exposed to water vapor and pyridine. Stern support was found for saturation of Cu(II) percentage with increasing exposure time, and ongoing work aims to elucidate the mechanism of Cu(II) reduction to Cu(I) mediated by water and pyridine in HKUST-1.
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
(2021)
Article
Chemistry, Physical
Junjun Wang, Weijia Wang, Zhiying Fan, Shuang Chen, Alexei Nefedov, Stefan Heissler, Roland A. Fischer, Christof Woell, Yuemin Wang
Summary: Defect engineering is a powerful method for tuning the properties of MOF materials, with experiments on NOTT-100 showing controlled formation of Cu+/Cu2+ dimer defects through thermal defect engineering and synthetic defect engineering. Exposure to CO results in the formation of various Cu+ and Cu2+ species, with binding energies showing strong variations. The structural and electronic properties of DE-NOTT-100 MOFs are influenced by the type and doping concentration of defective linkers, as well as annealing temperatures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Abhinav Chandresh, Xiaojing Liu, Christof Woell, Lars Heinke
Summary: Crystal organic/organic heterojunctions between C-60- and anthracene-based semiconductors are achieved using metallic-organic framework (MOF) thin films deposited layer by layer. By adjusting the lattice constants of two different MOFs, perfect epitaxy is achieved. The high-performance diodes fabricated exhibit a current on/off ratio of up to 6 orders of magnitude and an ideality factor close to unity, providing a basis for rational and simulation-based optimization and tailoring of such organic semiconductor interfaces.
Article
Chemistry, Multidisciplinary
Luiz G. S. Albano, Davi H. S. de Camargo, Gabriel R. Schleder, Samantha G. Deeke, Tatiana P. Vello, Leirson D. Palermo, Catia C. Correa, Adalberto Fazzio, Christof Woell, Carlos C. B. Bufon
Summary: The advances in surface-supported metal-organic framework (SURMOF) thin-film synthesis have enabled effective integration of MOF structures into electronic devices, leading to the observation of room-temperature negative differential resistance (NDR) in vertical heterojunctions. The NDR effect can be tailored by controlling humidity and electric field, resulting in high PVCR values under low voltages. These findings showcase the potential of utilizing physical effects in SURMOF heterojunctions for future scalable functional devices.
Article
Chemistry, Multidisciplinary
Qiang Zhang, Yohanes Pramudya, Wolfgang Wenzel, Christof Woell
Summary: Metal organic frameworks (MOFs) are a new class of materials with diverse applications, but their performance can be limited by structural defects. A coarse-grained model was used to simulate the layer-by-layer growth of HKUST-1 MOF, revealing the impact of temperature and reactant concentration on the growth mechanism. It was found that reactant concentration affects the mass deposition rate, while temperature has varying effects on surface roughness and crystallinity of the film.
Article
Chemistry, Analytical
Benedikt Sapotta, Matthias Schwotzer, Christof Woell, Matthias Franzreb
Summary: This novel method combines electrochemical impedance spectroscopy with dielectrometry, providing a reliable way to determine thickness and permittivity values of thin films. It demonstrates the ability to monitor the in-situ growth of crystalline films on an interdigitated electrode geometry.
Correction
Physics, Multidisciplinary
Pablo G. Lustemberg, Philipp Plessow, Yuemin Wang, Chengwu Yang, Alexei Nefedov, Felix Studt, Christof Woll, M. Veronica Ganduglia-Pirovano
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zeinab Mohammed Hassan, Peter G. Weidler, Alexei Nefedov, Yi Luo, Stefan Heissler, Manuel Tsotsalas, Ritesh Haldar, Christof Woell
Summary: Metal-organic frameworks (MOFs) with periodic and modular structures can predict the physical and chemical properties of organic chromophores. In this study, a zinc-bianthryl (Zn-BA) surface-anchored MOF (SURMOF) thin film was constructed using a BA chromophore with metal-coordinating carboxylate groups. It was found that a photoinduced topotactic transformation occurred in the presence of oxygen, leading to changes in the optical properties of the Zn-BA SURMOF.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Chengwu Yang, Yunjun Cao, Philipp N. Plessow, Jia Wang, Alexei Nefedov, Stefan Heissler, Felix Studt, Yuemin Wang, Hicham Idriss, Thomas G. Mayerhoefer, Christof Woell
Summary: Catalytic decomposition of N2O on macroscopic monocrystalline CeO2(111) surfaces has been studied and found to be an effective way to control N2O emissions. The higher activity of reduced ceria surfaces compared to oxidized surfaces has been confirmed through experiments.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Tahereh Mohammadi Hafshejani, Weijia Wang, Jonas Heggemann, Alexei Nefedov, Stefan Heissler, Yuemin Wang, Philipp Rahe, Peter Thissen, Christof Woell
Summary: Detailed information on the structural, chemical, and physical properties of natural cleaved (10.4) calcite surfaces was obtained through a combined AFM and IR study using CO as a probe molecule under UHV conditions. The study revealed the adsorption characteristics and vibrational frequencies of CO on the surface, with a well-defined adsorption site and clear vibrational bands.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Ritesh Haldar, Mariana Kozlowska, Michael Ganschow, Samrat Ghosh, Marius Jakoby, Hongye Chen, Farhad Ghalami, Weiwei Xie, Shahriar Heidrich, Yusuke Tsutsui, Jan Freudenberg, Shu Seki, Ian A. Howard, Bryce S. Richards, Uwe H. F. Bunz, Marcus Elstner, Wolfgang Wenzel, Christof Woell
Summary: By utilizing a new crystalline assembly strategy based on metal-organic frameworks (MOFs), highly ordered pi-stacks of pentacene chains were successfully engineered with long-range order. The anisotropic inter-pentacene electronic coupling in these structures leads to efficient charge delocalization, despite the presence of frustrated localized rotations that hinder band transport. This approach not only demonstrates efficient charge transport, but also paves the way for a crystal engineering strategy for molecular OSCs that can independently vary the arrangement of molecular cores and their vibrational degrees of freedom.
Article
Nanoscience & Nanotechnology
Jinxuan Liu, Shahriar Heidrich, Jianxi Liu, Biao Guo, Michael Zharnikov, Ulrich Simon, Wolfgang Wenzel, Christof Woell
Summary: This study demonstrates a facile method to encapsulate ligand-stabilized Au-55 clusters within SURMOF thin films, confirmed by various analytical techniques. Computational modeling shows a strong interaction between Au-55 core and the MOF pore ligands, resulting in the removal of PPH3 ligands. The stabilized Au-55 clusters within SURMOF exhibit excellent catalytic activity for the reduction of 4-nitrophenol.
ACS APPLIED NANO MATERIALS
(2021)
