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16 results on '"Chen, Longjie"'

1. Physics case for quarkonium studies at the Electron Ion Collider

Author

Boer, Daniël, Flett, Chris A., Flore, Carlo, Kikoła, Daniel, Lansberg, Jean-Philippe, Nefedov, Maxim, Van Hulse, Charlotte, Bhattacharya, Shohini, Bor, Jelle, Butenschoen, Mathias, Ceccopieri, Federico, Chen, Longjie, Cheung, Vincent, D'Alesio, Umberto, Echevarria, Miguel, Hatta, Yoshitaka, Hyde, Charles E., Kishore, Raj, Kosarzewski, Leszek, Lorcé, Cédric, Li, Wenliang, Li, Xuan, Maxia, Luca, Metz, Andreas, Mukherjee, Asmita, Camacho, Carlos Muñoz, Murgia, Francesco, Nadel-Turonski, Pawel, Pisano, Cristian, Qiu, Jian-Wei, Rajesh, Sangem, Rinaldi, Matteo, West, Jennifer Rittenhouse, Saleev, Vladimir, Santiesteban, Nathaly, Setyadi, Chalis, Taels, Pieter, Tu, Zhoudunmin, Vitev, Ivan, Vogt, Ramona, Watanabe, Kazuhiro, Yao, Xiaojun, Yedelkina, Yelyzaveta, and Yoshida, Shinsuke

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Experiment, Nuclear Theory
Abstract

The physics case for quarkonium-production studies accessible at the US Electron Ion Collider is described., Comment: Latex, 84 pages. Review prepared for Progress in Particle and Nuclear Physics

Published
2024

2. The twist-3 gluon contribution to Sivers asymmetry in $J/\psi$ production in semi-inclusive deep inelastic scattering

Author

Chen, Longjie, Xing, Hongxi, and Yoshida, Shinsuke

Subjects
High Energy Physics - Phenomenology
Abstract

We carry out the first calculation for the twist-3 gluon contribution to the single transverse-spin asymmetry(SSA) in $J/\psi$ production in semi-inclusive deep inelastic scattering. Our result shows that the $J/\psi$ SSA is an ideal observable to pin down the $C$-even type twist-3 gluon distribution that has a direct relationship with the gluon transverse-momentum-dependent distribution function. We also perform some numerical simulations of the $J/\psi$ SSA for the kinematics accessible at the future electron-ion-collider experiment. For color-singlet contribution, the hadronization effect of $J/\psi$ is completely canceled at the level of the SSA and the spin-dependent structure functions directly reflect the behavior of the $C$-even twist-3 gluon distribution., Comment: 19 pages, 5 figures

Published
2023

3. Q-Learning Based Multi-objective Optimization Routing Strategy in UAVs Deterministic Network

Author

Zhou, Zou, Chen, Longjie, Hu, Yu, Zheng, Fei, Liang, Caisheng, Li, Kelin, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Zhang, Yonghong, editor, Qi, Lianyong, editor, Liu, Qi, editor, Yin, Guangqiang, editor, and Liu, Xiaodong, editor

Published
2024
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4. Multi-path Transmission Strategy for Deterministic Networks

Author

Zheng, Fei, Li, Kelin, Zhou, Zou, Hu, Yu, Chen, Longjie, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Zhang, Yonghong, editor, Qi, Lianyong, editor, Liu, Qi, editor, Yin, Guangqiang, editor, and Liu, Xiaodong, editor

Published
2024
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5. The effect of provincial policies on seismic disaster mitigation in China: An empirical study.

Author

Gao, Lei, Liu, Xiaoxue, Zhao, Yiming, Chen, Longjie, Que, Yihua, and Wang, Zining

Subjects
HAZARD mitigation, DISASTER relief, EARTHQUAKE relief, EMERGENCY management, EARTHQUAKES, EMPIRICAL research
Abstract

With the development of earthquake disaster reduction efforts in China, the content of earthquake disaster reduction policies has become increasingly enriched and improved. Particularly, multiple provincial governments have proposed earthquake disaster reduction planning policies. It is important to explore whether these policies can affect disaster mitigation. Therefore, this paper summarizes the earthquake disaster reduction plans and factors influencing seismic resilience. Panel data from 24 provinces between 2012 and 2021 were collected, and a difference-in-differences approach was used to construct an econometric model to evaluate the policy effects and analyze the enhancement of seismic resilience. The results show that the implementation of earthquake disaster reduction policies has a positive impact on earthquake monitoring, evacuation, and emergency relief capabilities, and the estimated policy effects are statistically significant. Moreover, a series of tests were conducted. The conclusions are as follows: (1) Earthquake disaster reduction policies have a positive impact on the improvement of seismic resilience in provinces. (2) Provinces with a higher number of earthquakes experience more significant effects from earthquake disaster reduction policies. (3) Provinces with higher seismic peak ground acceleration values exhibit more pronounced improvements in seismic resilience. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Early soft tissue response to zirconium oxide and titanium healing abutments in vivo: a study in dogs

Author

Haibin Xia, Haixiao Zou, Yining Wang, Chen Longjie, Min Wang, and Shuang Zhang

Subjects
Healing abutment, Dentistry, chemistry.chemical_element, Dental Abutments, Mandibular first molar, Soft Tissue Response, Crevicular fluid, Dogs, In vivo, Mucositis, medicine, Animals, Zirconium oxide, General Dentistry, Ligation, Titanium, Dental Implants, business.industry, Peri-implant crevicular fluid, Soft tissue, RK1-715, medicine.disease, chemistry, Zirconium, business, Research Article
Abstract

Background This study aimed to investigate the clinical characteristics and early soft tissue response to zirconium oxide (Zr) and titanium (Ti) healing abutments in dogs. Methods Eight implants (four at each hemi-mandible) were inserted after bilateral mandibular third and fourth premolars and first molar extraction in dogs. Then, two Zr and two Ti healing abutments were connected to each unilateral mandible eight weeks later. The ligation method was used to create a peri-implant mucositis model and the 24 abutments were divided into four groups: Zr or Ti healing abutments with ligation (ZrL, TiL) or non-ligation (ZrN, TiN). The clinical indices, peri-implant crevicular fluid (PICF), and inflammatory cytokines (TNF-α and IL-1β) were measured and analyzed on days 0 and 28. The dogs were then sacrificed on day 28, soft tissues around the implants were harvested, and inflammation infiltration was tested by immunohistochemistry. Normal distribution test and two-way analysis of variance was used to analyze the data. Results The results showed that the clinical indices were similar for Zr and Ti healing abutments. There was significantly more PICF in the ZrL and TiL groups compared to in the ZrN and TiN groups. The TNF-α levels in PICF were significantly different between ZrL and ZrN groups on day 28. And the TNF-α levels in PICF were significantly higher in TiL group on day 28 than that on day 0. However, the number of inflammatory cells was not significantly different between the groups as measured by immunohistochemistry. Conclusions These data indicate that soft tissue responses to Zr healing abutments with peri-implant mucositis were comparable to those of Ti healing abutments in vivo, providing a theoretical foundation for the clinical application of Zr abutments.

Published
2021

11. Early Soft Tissue Response to Zirconium Oxide and Titanium Healing Abutments in Vivo: A Dog Study

Author

Haibin Xia, Yining Wang, Haixiao Zou, Shuang Zhang, Min Wang, and Chen Longjie

Subjects
Materials science, chemistry, In vivo, Zirconium oxide, chemistry.chemical_element, Soft Tissue Response, Titanium, Biomedical engineering
Abstract

Background: This study aimed to investigate clinical characteristics and early soft tissues response to zirconium oxide (Zr) and titanium (Ti) abutments in dogs. Methods: Eight implants-four at each hemi-mandible were inserted after bilateral mandibular third and fourth premolars and first molars extraction. Two Zr and two Ti healing abutments were connected in each unilateral mandible 8 weeks later. The ligation method was used to make peri-implant mucositis model. The twenty-four abutments were divided into four groups, Zr and Ti healing abutments with ligation (ZrL, TiL) and non-ligation (ZrN, TiN) groups. Clinical index, peri-implant crevicular fluid (PICF) and inflammatory cytokines (TNF-α and IL-1β), soft tissue responses were tested. Two-way analysis of variance was used to analyze the data. Results: The results showed that the clinical index were similar around Zr and Ti healing abutments. PICF in ZrL and TiL groups were significantly higher than those in ZrN and TiN groups. Immunohistochemistry demonstrated inflammatory cells were non-significant differences. Conclusion: These data indicate soft tissue responses to Zr healing abutments with peri-implant mucositis was comparable to those to Ti healing abutments in vivo, and can provide theoretical foundation for Zr’s clinical application.

Published
2021

14. Influence of polyhedral oligomeric silsesquioxanes (POSS) on the luminescence properties of non-conjugated copolymers based on iridium complex and carbazole units

Author

Meijuan Lin, Guang Xing, Chen Longjie, Qidan Ling, and Luo Caiping

Subjects
Materials science, Carbazole, General Chemical Engineering, chemistry.chemical_element, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, Silsesquioxane, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Polymer chemistry, Copolymer, Thermal stability, Iridium, 0210 nano-technology, Luminescence, Phosphorescence, Hybrid material
Abstract

Non-conjugated copolymers with iridium complex and carbazole groups and polyhedral oligomeric silsesquioxane (POSS) moieties as pendant groups were synthesized by free radical copolymerization. The luminescent properties of the polymeric hybrid materials containing the carrier-transporting units (carbazole groups), phosphorescence units (iridium complex) and nano-scale particles (POSS) were studied to explore the effect of POSS on the luminescence of non-conjugated copolymer hybrid materials. The results showed that the copolymers with POSS exhibited good solubility in common organic solvents and better film-formation property. The photoluminescence decays of all copolymers in solid state were bi-exponential indicating the presence of more than one emissive species, which was attributed to intra-polymer chromophore interactions. The luminescence lifetimes of the copolymers were 0.28–1.60 μs, indicating phosphorescence emission. The luminescence properties of the copolymers were improved significantly by incorporating bulky POSS into the polymer side-chain, and the maximum quantum efficiency was found to be 52.4% for ternary copolymer PCz-Ir1.0-POSS6, which was more than six times than that of binary copolymer PCz-Ir1.0 (Φpl = 7.7%). The grafted bulky POSS can enhance the thermal stability, however, POSS had no influence on the electrochemical properties of the copolymers.

Published
2017

16. Application of Isotope Tracer Technique in Source Apportionment of Heavy Metal Pollution in Soil.

Author

Lin Ying, Ke Nafen, Chen Longjie, Xiao Yueming, and Huang Huabin

Subjects
HEAVY metal absorption & adsorption, STABLE isotope tracers, SOIL testing, SOIL mechanics, HUMUS analysis
Abstract

The formation of heavy metal pollution in soil is closely related to human production and life. In order to effectively control heavy metal pollution and repair damaged soil, the pollution source should be known and judged first. Based on the preliminary analysis of major sources of soil heavy metal pollution in soil, combined with relevant literatures on heavy metal pollution source of soil or sediment at home and abroad in recent years, application progress of isotope tracer technique, especially lead isotope tracer technique, in the study of heavy metal pollution sources in soils and sediments were reviewed. The key points of future isotope tracer technology in the field of heavy metal pollution source apportionment were prospected. [ABSTRACT FROM AUTHOR]

Published
2017
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