Article
Automation & Control Systems
Samson J. Koelle, Hanyu Zhang, Marina Meila, Yu-Chia Chen
Summary: This paper studies the problem of recovering the meaning of the new low-dimensional representation in an automatic and principled fashion. A method is proposed to explain the embedding coordinates and its effectiveness is demonstrated through experiments.
JOURNAL OF MACHINE LEARNING RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Juhyeok Lee, Chaehwa Jeong, Taegu Lee, Seunghwa Ryu, Yongsoo Yang
Summary: We determined the 3D atomic structure of a Pt nanoparticle formed by the coalescence of two nanoclusters using deep learning assisted atomic electron tomography. The presence of a double twin boundary, anisotropy, and disorder were observed throughout the nanoparticle. Additionally, a full 3D strain tensor was mapped, allowing for the calculation of oxygen reduction reaction activity. The protruded region of the nanoparticle exhibited strong tensile strain, resulting in improved catalytic activity on {100} facets.
Article
Engineering, Environmental
Rongrong Liu, Ranxiao Tang, Jizheng Feng, Tao Meng
Summary: Dual-atom catalysts (DACs) have the potential to efficiently regulate multiple reaction pathways and understand the fundamental mechanisms, breaking the limitations of single-atom catalysts (SACs) in heterogeneous catalysis. Fe-DAs/NC with Fe2-N6 moieties was successfully synthesized and employed as an alkaline oxygen reduction reaction (ORR) catalyst. The ORR performances of Fe-DAs/NC were significantly improved compared to single-atom Fe-N4 catalyst due to the synergistic effect of Fe2-N6 moiety.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Faizul Chasanah, Hiroyuki Sakakibara
Summary: The successful evacuation of vulnerable people during emergencies is a significant challenge. This study proposes a mutual assistance strategy to evacuate vulnerable people with the help of young people. Using AnyLogic software for simulation, the study measures walking speeds and finds that the mutual assistance model is effective for rapid evacuation and risk reduction in vulnerable communities.
Article
Chemistry, Physical
Chuanguang Wang, Xiaohang Sun, Xiaomei Zhu, Bing Sun
Summary: This study proposes a novel strategy for reducing graphene oxide using microwave discharge plasma in liquid. The method demonstrates fast reduction, high reactivity, and low temperature, making it suitable for efficient graphene production. The plasma treatment effectively reduces the oxygen content and enhances the conductivity of graphene, resulting in superior performance as a supercapacitor electrode.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Energy & Fuels
Cheolwoo Park, Ji Young Hwang, Won Hyun Eom, Jae Won Han, Hyo Won Kim, Tae Kyu Ahn, Wooyul Kim
Summary: This study compares the performance of platinized and bare TiO2 for the CO oxidation in the presence of NO and reveals the effects of platinization on the efficiency and mechanism of this oxidation. The results show that platinized TiO2 can effectively control the oxidation of CO and the reduction of NO at ambient temperature, thereby improving the CO oxidation performance.
Article
Physics, Nuclear
F. Pogliano, F. L. Bello Garrote, A. C. Larsen, H. C. Berg, D. Gjestvang, A. Gorgen, M. Guttormsen, V. W. Ingeberg, T. W. Johansen, K. L. Malatji, E. F. Matthews, M. Markova, J. E. Midtbo, V. Modamio, L. G. Pedersen, E. Sahin, S. Siem, T. G. Tornyi, A. S. Voyles
Summary: The gamma-strength function and nuclear level density of the odd-odd, rare-earth nucleus 166Ho were obtained from 163Dy(alpha, p gamma )166Ho data using the Oslo method. A structure at P-'3 MeV in the gamma-strength function is identified as the M1 scissors resonance. The strength of the 166Ho scissors resonance is sensitive to the modeling of the E1 strength, while its centroid remains unchanged. The resonance parameters are consistent with previous studies on other rare-earth nuclei.
Article
Engineering, Geological
Yuan Guo, Xiong Yu
Summary: This paper aims to investigate the factors affecting the bulk shear strength parameters of clay and the effects of memory of preconsolidation pressure. The authors developed a unique Discrete Element Method (DEM) model based on platy particles with a customized particle interaction force model. The DEM simulation results showed that higher preconsolidation pressure increased the bulk cohesion of clay through the bonding of particles by van der Waals force. The results also indicated that the bulk internal friction angle was affected by the particle friction coefficient and particle fabric.
SOILS AND FOUNDATIONS
(2023)
Article
Chemistry, Physical
Hong Li, Tian-Wen Jiang, Xianxian Qin, Jie Chen, Xian-Yin Ma, Kun Jiang, Xia-Guang Zhang, Wen-Bin Cai
Summary: By developing a facile galvanic displacement protocol, a copper electrode modified with antimony (Sb) clusters was able to selectively convert CO2 to CO with a Faradaic efficiency of approximately 82% and a stable reduction current for over 12 hours. In situ infrared spectroscopy showed a weaker and red-shifted CO band on the Sb-modified copper electrode compared to the unmodified copper electrode, indicating a change in electronic structure that weakened CO binding strength at copper sites. These findings offer insights for the rational design of high-selectivity CO2RR electrocatalysts through proper interfacial structure engineering.
Article
Chemistry, Physical
Jacob T. Lee, Sumon Hati, Mackenzie M. Fahey, Jeffrey M. Zaleski, Rajesh Sardar
Summary: This study investigates the impact of metal-ligand bonding interactions on the plasmonic properties of tungsten oxide nanoplatelets. It reveals that surface ligand chemistry plays a crucial role in enhancing the localized surface plasmon resonance (LSPR) properties. In situ surface passivation increases the free electron density of the nanoplatelets, allowing for control over their optoelectronic properties.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Rui Gao, Hao Wang, Abliz Abdurahman, Weiqian Liang, Xiaotian Lu, Shuyin Wei, Feng Zeng
Summary: This study investigated the interactions between different molecular weight fractions of humic acids (HAs) and nonylphenols (NPs) using various spectroscopic techniques. The results showed that higher molecular weight fractions of HAs exhibited stronger interactions with NPs compared to lower molecular weight fractions, indicating a clear molecular weight-dependent interaction heterogeneity. Additionally, hydroxyl and aromatic compounds were found to be involved in the interaction process between HAs and NPs.
Article
Environmental Sciences
Jon Mikel Picabea, Jesus Camara, Javier Yanci
Summary: The study found differences in physical profiles among table tennis players of different age groups, with older players performing better. There were correlations between forearm isometric strength, vertical and horizontal jump, sprint, and CODA ability, while flexibility appeared to be independent.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Engineering, Mechanical
Chao Kong, Xinqiang Gao, Songbo Ren, Song Gu, Ying Gu
Summary: In this study, a similar material for quantitative strength-reduction by temperature change was developed to simulate the strength-reduction method in geotechnical engineering. Physical model tests were conducted for the progressive failure of a tunnel surrounded by similar materials with a temperature control system, which provided valuable information about the deformation, force, and damage characteristics of the tunnel complex surrounding rock.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Chemistry, Physical
Rohollah Ezzati
Summary: In this study, an exact mathematical expression for the rate constant of the pseudo-second-order (PSO) model was derived based on the general rate equation related to the adsorption mechanism. This expression accurately calculates the ionic radius of divalent metal ions on the adsorbent surface. It was also found that the PSO model is more accurate under certain conditions. Experimental data from literature was used to confirm the validity of the obtained results.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Ke Song, Yu Huang, Jiewen Yang
Summary: This study investigated the catalytic effect of goethite on the reduction of Cr(VI) by gallic acid (GA) and its implication for the transformation of Cr(VI) in oxisol. The results showed that goethite facilitated the adsorption and oxidation of GA, leading to accelerated Cr(VI) reduction. The presence of goethite significantly enhanced the reduction of Cr(VI) and stabilized the free radicals, which is believed to be favorable for the reduction of Cr(VI). These findings suggest that GA can alleviate the environmental risk of Cr(VI)-polluted acidic soils.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Optics
N. K. Timofeyuk
Article
Physics, Multidisciplinary
G. W. Bailey, N. K. Timofeyuk, J. A. Tostevin
PHYSICAL REVIEW LETTERS
(2016)
Article
Physics, Multidisciplinary
N. K. Timofeyuk, D. Baye
Correction
Physics, Multidisciplinary
G. W. Bailey, N. K. Timofeyuk, J. A. Tostevin
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Nuclear
N. K. Timofeyuk
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2019)
Article
Physics, Nuclear
M. Gomez-Ramos, K. Timofeyuk
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2019)
Article
Astronomy & Astrophysics
T. A. Berry, Zs Podolyak, R. J. Carroll, R. Lica, H. Grawe, N. K. Timofeyuk, T. Alexander, A. N. Andreyev, S. Ansari, M. J. G. Borge, J. Creswell, C. Fahlander, L. M. Fraile, H. O. U. Fynbo, W. Gelletly, R-b Gerst, M. Gorska, A. Gredley, R. Greenlees, L. J. Harkness-Brennan, M. Huyse, S. M. Judge, D. S. Judson, J. Konki, J. Kurcewicz, I Kuti, S. Lalkovski, I Lazarus, M. Lund, M. Madurga, N. Marginean, R. Marginean, I Marroquin, C. Mihai, R. E. Mihai, E. Nacher, S. Nae, A. Negret, C. Nita, R. D. Page, S. Pascu, Z. Patel, A. Perea, V Pucknell, R. Rahkila, E. Rapisarda, P. H. Regan, F. Rotaru, C. M. Shand, E. C. Simpson, Ch Sotty, S. Stegemann, T. Stora, O. Tengblad, A. Turturicag, R. Van Duppen, V. Vedia, R. Wadsworth, P. M. Walker, N. Warr, F. Wearing, H. De Witte
Review
Physics, Nuclear
N. K. Timofeyuk, R. C. Johnson
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
(2020)
Proceedings Paper
Quantum Science & Technology
A. Kievsky, A. Polls, B. Julia-Diaz, N. Timofeyuk, M. Gattobigio
RECENT PROGRESS IN FEW-BODY PHYSICS
(2020)
Article
Physics, Nuclear
M. J. Dinmore, N. K. Timofeyuk, J. S. Al-Khalili, R. C. Johnson
Article
Physics, Nuclear
M. Gomez-Ramos, N. K. Timofeyuk
Article
Physics, Nuclear
N. K. Timofeyuk
Article
Optics
A. Kievsky, A. Polls, B. Julia-Diaz, N. K. Timofeyuk
Article
Physics, Nuclear
G. W. Bailey, N. K. Timofeyuk, J. A. Tostevin
Article
Physics, Nuclear
S. J. Waldecker, N. K. Timofeyuk