<i>In Situ</i> Activation of Nitrogen-Doped Graphene Anchored on Graphite Foam for a High-Capacity Anode

Ji, Junyi,Liu, Jilei,Lai, Linfei,Zhao, Xin,Zhen, Yongda,Lin, Jianyi,Zhu, Yanwu,Ji, Hengxing,Zhang, Li Li,Ruoff, Rodney S. American Chemical Society 2015 ACS NANO Vol.9 No.8

<P>We report the fabrication of a three-dimensional free-standing nitrogen-doped porous graphene/graphite foam by <I>in situ</I> activation of nitrogen-doped graphene on highly conductive graphite foam (GF). After <I>in situ</I> activation, intimate “sheet contact” was observed between the graphene sheets and the GF. The sheet contact produced by <I>in situ</I> activation is found to be superior to the “point contact” obtained by the traditional drop-casting method and facilitates electron transfer. Due to the intimate contact as well as the use of an ultralight GF current collector, the composite electrode delivers a gravimetric capacity of 642 mAh g<SUP>–1</SUP> and a volumetric capacity of 602 mAh cm<SUP>–3</SUP> with respect to the whole electrode mass and volume (including the active materials and the GF current collector). When normalized based on the mass of the active material, the composite electrode delivers a high specific capacity of up to 1687 mAh g<SUP>–1</SUP>, which is superior to that of most graphene-based electrodes. Also, after ∼90 s charging, the anode delivers a capacity of about 100 mAh g<SUP>–1</SUP> (with respect to the total mass of the electrode), indicating its potential use in high-rate lithium-ion batteries.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2015/ancac3.2015.9.issue-8/acsnano.5b03888/production/images/medium/nn-2015-03888k_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn5b03888'>ACS Electronic Supporting Info</A></P>

중국의 기체결 FTA 원산지규정수준이 중국의 GVC 참여율에 미치는 영향

Yang Junyi,Zhu Zhaokuan,조금재,황윤섭 국제지역학회 2025 국제지역연구 Vol.29 No.3

In recent years, with the refinement of the international division of labor system, multinational corporations have closely connected the parent company and subsidiaries, subsidiaries and subsidiaries through the flow of investment and trade between enterprises, forming the global value chain division of labor. The strict criteria of FTA rules of origin affect the trade flow and investment flow within the region (outside) through the cross-border production strategies of multinational companies such as intermediate goods procurement, foreign investment and offshore outsourcing, thus affecting the value chain participation of a country (region). In this context, the influence of the FTA rules of origin on the value chain participation is particularly important, so an in-depth and systematic study is necessary. This study aimed explore the impact of FTA rules of origin on participation in value chain, aiming to provide theoretical and policy reference for China to enhance participation in value chain. The results show that the FTA rules of origin in the sample country (region) have a significant inhibitory effect on China’s value chain participation. Mechanism analysis found that the FTA rules of origin lead to increased trade costs and thus inhibit value chain participation, and lead to supplier conversion and thus inhibit value chain participation.

DyS-MPADE: A novel multipopulation adaptive differential evolution methodology based on dynamic subpopulation

Huang Chen,Zhu Junyi,Xu Mingyao 한국CDE학회 2025 Journal of computational design and engineering Vol.12 No.3

Differential evolution (DE) is widely recognized in global optimization. However, it is not immune to the issue of premature convergence. To address this challenge, a dynamic subpopulation-based DE algorithm (i.e., DyS-MPADE) is presented in this paper. In DyS-MPADE, spectral hashing clustering is introduced to adaptively adjust the population structure. The innovative approach enhances SHADE’s capacity by balancing exploration and exploitation, thereby improving its convergence properties. The population of DyS-MPADE is decomposed into subpopulations, facilitating independent evolution and emulating geographical separation. The number of subpopulations is dynamically adjusted by clustering analysis of optimal and pessimal individuals. We conducted a thorough evaluation of DyS-MPADE using the CEC 2017 benchmark functions to assess its performance of different dimensions. Compared to DE, adaptive differential evolution with optional external archive (JADE), success-history based parameter adaptation for differential evolution (SHADE), Bernstein-Levy differential evolution algorithm (BDE), Bezier Search Differential Evolution Algorithm (BeSD), Egret swarm optimization algorithm (ESOA), Artificial rabbits optimization (ARO), Sea-horse optimizer (SHO), GRO, and DO, the average ranks of DyS-MPADE are 1.76 and 1.2 in 50 and 100 dimensions, respectively. The accuracy of DyS-MPADE is superior to SHADE and other state-of-the-art DE variants. Additionally, DyS-MPADE is applied to airport gate allocation problem, where it demonstrated better performance compared to other algorithms, indicating its significance for engineering applications.

New Perspectives on Mental Health Education for College Students in the New Era : A Preliminary Study of Artistic Healing Through Printmaking

张雨微(Yuwei ZHANG),朱俊伊(Junyi ZHU) Korea Institute for Humanities and Social Sciences 2025 Journal of Global Arts Studies (JGAS) Vol.3 No.1

Nobiletin attenuates LPS-induced acute lung injury via a STING-dependent signaling pathway

Ranran Chen,Wenwen Zhu,Ruyin Zheng,Lianhao Wu,Junyi Wang,Yiyang Shui,Yi Sun,Sheng Zhang,Yueguo Wu,Yu Yuan,Zhenqiang You 대한약학회 2026 Archives of Pharmacal Research Vol.49 No.6

Previous studies have shown that Quzhou Fructus Aurantii extract (QFAEE) ameliorates lipopolysaccharide (LPS)-induced acute lung injury (ALI) by modulating the Stimulator of interferon genes (STING) pathway. Nevertheless, the mechanisms underlying the anti-inflammatory effects of nobiletin (Nob), the primary bioactive component of QFAEE, have not been clearly elucidated. The present study aimed to investigate the protective effects of Nob on a mouse model of LPS-induced ALI and elucidate its underlying mechanism. The pulmonary inflammatory response in mice was quantified by performing fluorescence-based RT‒qPCR, bronchoalveolar lavage fluid (BALF) cell counting, and hematoxylin‒eosin (HE) staining. Transcriptomic profiling was performed to explore the mechanisms by which Nob ameliorates LPS-induced ALI. The anti-inflammatory mechanisms were further elucidated using western blotting, immunohistochemical staining, cellular thermal shift assays (CETSAs), and microscale thermophoresis. Functional validation was conducted using the STING agonist vadimezan (DMXAA), the STING inhibitor SN-001, and STING-knockout (STING-KO) mice. Nobiletin-loaded liposomes (Nob-Lipo) significantly attenuated LPS-induced pulmonary inflammation in mice. The results of the transcriptomic analysis suggested that this protective effect was associated with the modulation of the type I interferon pathway. In RAW264.7 and THP-1 cells, pretreatment with Nob effectively attenuated the interferon regulatory factor 3 (IRF3)-mediated type I interferon response and nuclear factor kappa-B (NF-κB)-dependent proinflammatory cytokine expression following DMXAA-induced STING pathway activation. Furthermore, the STING inhibitor SN‑001 markedly suppressed LPS‑induced inflammatory responses, as evidenced by significantly reduced levels of proinflammatory cytokines and interferon‑stimulated genes, and effectively blocked the nuclear translocation of NF‑κB and IRF3. Notably, after inhibitor treatment, Nob no longer exerted its previously observed anti‑inflammatory effects, further supporting the critical regulatory role of STING in LPS‑mediated inflammation and indicating that the anti‑inflammatory activity of Nob is primarily dependent on the STING pathway. Moreover, in STING‑KO mice with LPS‑induced ALI, the loss of the protective effect of Nob further confirmed that its anti‑inflammatory activity depends on STING, highlighting the essential role of STING signaling in mediating its protective effects. In conclusion, the protective effect of Nob on an LPS-induced ALI model is mediated primarily through the modulation of STING signaling.

Standing wave modes observed in the South China Sea deep basin

Zheng, Quanan,Hu, Jianyu,Zhu, Benlu,Feng, Ying,Jo, Young-Heon,Sun, Zhenyu,Zhu, Jia,Lin, Hongyang,Li, Junyi,Xu, Ying American Geophysical Union 2014 Journal of geophysical research. Oceans Vol.119 No.7

Inkjet-Printed Flexible, Sensitive Humidity Sensor with High Breathability on Electrospun Nanofibrous Mats

Yu Liu,Lei Xing,Hongze Zhu,Guangya Liu,Junyi Ren,Bin Sun 한국섬유공학회 2024 Fibers and polymers Vol.25 No.5

Inkjet printing technology has been playing an increasingly important role in manufacturing of electronic devices due to its low cost, high deposition accuracy, and mass manufacturability. Inkjet-printed flexible sensors are increasingly used in the field of flexible/wearable electronics. In this study, a kneadable humidity sensor with high breathability was developed on electrospun thermoplastic polyurethane (TPU) nanofibrous mats using inkjet printing technology. This humidity sensor shows good sensitivity over a wide humidity range, with a resistance change of only 6.13% after 1000 mechanical bends at 75% relative humidity (RH). It also has good reversibility, and the morphology and structure are not damaged upon direct contact with water droplets. In addition, the humidity sensor with good air permeability (28.8 mm s-1) can be used for breath monitoring, particularly for person in sadness, panic, and tensed situations.

Optimization of Glass Fiber Reinforced Injection Molded Product Quality Based on the ILSO-RF Model and MSINSWOA

Zhijiang Wang,Xiying Fan,Yong-huan Guo,Junyi Hua,Liuyu Zhu,Lie Li 한국정밀공학회 2025 International Journal of Precision Engineering and Vol.26 No.6

The main factors affecting the molding quality of the glass fiber injection-molded product are warpage deformation and volume shrinkage. To ensure high molding quality, this paper proposes a multi-objective optimization method for process parameters, using improved light spectrum optimizer optimization random forest (ILSO-RF) model and multi-strategy improved non-dominated sorting whale optimization algorithm (MSINSWOA), specifically addressing warpage deformation and volumetric shrinkage defects. Based on experimental simulation results from face-centered central composite design (FCCD), the ILSO-RF models with minimal prediction error was selected for establishing the relationship between injection molding process parameters and quality objectives. The MSINSWOA algorithm, capable of generating a superior solution set, was then employed for multi-objective optimization on the ILSO-RF models. The Critic method was integrated to determine the optimal combination of process parameters. The optimal combination of process parameters was inputted into Moldflow for injection molding simulation validation. Validation results indicated that the ILSO-RF models maintains prediction errors within 5% for warpage deformation and volumetric shrinkage, demonstrating good prediction accuracy. Warpage deformation and volumetric shrinkage after optimization are reduced by 33.55% and 17.28% respectively, validating the effectiveness of this optimization method

Optimization Mechanisms of Microstructure and Mechanical Properties of SiC Fiber Reinforced Ti/Al3Ti Laminated Composite Synthesized Using Titanium Barrier

Chunfa Lin,Siyu Wang,Haoran Yan,Yuqiang Han,Junyi Zhu,Hao Shi 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.2

A novel structure-optimized SiC fiber reinforced metal-intermetallic-laminated composite (SiCf-Ti/Al3Ti) without intermetalliccenterline defect has been fabricated by vacuum hot pressing using stacked fibers and foils as well as Ti barrierlayer. Through microstructure characterization by SEM and EBSD, the mechanisms of centerline formation and structuraloptimization were investigated detailedly. The mechanical properties and fracture behaviors of the optimized and nonoptimizedSiCf-Ti/Al3Ti composites were studied via quasi-static compression tests. The experimental results indicatedthat the intermetallic centerline region existing at the mid-plane of Al3Tilayer in non-optimized composite mainly containsnewly-formed Kirkendall voids and gathered metallic oxides. Additionally, owing to the similar moving trails of fibers,oxides and voids in molten Al during hot pressing, SiC fiber is always accompanied with centerline, which causes the poorbonding of SiCf/Al3Ti interface. Unlike that, due to the adding of Ti barrier layer, SiC fibers are separated from centerlineand metallurgically bonded with Al3Tiintermetallic in the optimized composite. The compression testing results proved thatthe optimized SiCf-Ti/Al3Ti composite possesses superior strength and toughness compared with those of the non-optimizedcomposite. Besides, the extending of cracks along centerline often leads to large-scale centerline splitting and untimelySiCf/Al3Ti interface debonding in non-optimized composite. Nevertheless, cracks formed in optimized composite tend topropagate at the interfacial zone between layers instead of cutting off Al3Tilayer along its mid-plane. Moreover, ascribedto the well-bonded SiCf/Al3Ti interface, SiC fibers play an important role in strengthening and toughening the optimizedSiCf-Ti/Al3Ti composite by fiber bridging mechanism.

Microstructure Evolution and Mechanical Performances of SiCf Reinforced (Al3Ti + Al3Ni)-Based Metallic–Intermetallic Laminate Composite

Yuqiang Han,Qinghua Que,Ran Cheng,Ran Cheng,Chunfa Lin,Wenqing Han,Enhao Wang,Junyi Zhu,Haoran Yan 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.10

In present work, a novel SiCfreinforced (Al3Ti + Al3Ni)-based metallic–intermetallic laminate (Ti–(Al3Ti + Al3Ni)/SiCf-MIL) composite without centerline defect was prepared using Ti, Al foils, NiTi wires and SiC fibers by vacuum hot pressingsintering method. Electron backscatter diffraction was employed to characterize the microstructure and phase constituents ofTi–(Al3Ti + Al3Ni)/SiCf-MIL composite during various stages of preparation process. The elimination mechanism of intermetalliccenterline was discussed. Besides, quasi-static compressive performance and fracture toughness of the synthesizedcomposite were investigated. The experimental results indicated that as reaction time increasing, the NiTi/Al interfacialreaction occurred prior to the Ti/Al interfacial reaction to form an Al3Ti/Al3Ni zone. Then, the oxides gathered at the frontof Ti/Al interfacial reaction layer were dispersed in the intermetallic layer rather than being pushed together to generate thecenterline due to the Al3Ti/Al3Ni zone. After reaction, there were no residual NiTi phases and intermetallic layers mainlyconsisting of Al3Tiand Al3Niphases were obtained in this composite. In addition, high angle grain boundaries in Al3Tigrains occupied a large proportion, conversely, low angle grain boundaries dominated in Al3Nigrains. Furthermore, stressconcentration appears at the interface between layers instead of along the middle plane of intermetallic layer. Moreover,both compressive strength and fracture toughness of the composite are superior in comparison with SiCfreinforced Ti–Al3Timetallic–intermetallic laminate composite (Ti–Al3Ti/SiCf-MIL) ascribed to the elimination of centerline.