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Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming Zhang Hanyu Wu Qi Chen jiaxin yang Bonan Liu School of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH3/O2and the production of N2/H2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O（1S）.However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

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A Fluorescent Probe based on a Carbazole Derivative for Detecting Brilliant Blue in Food

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Journal of Wuhan University of Technology(Materials Science) 2023年第2期38卷 308-311页

作者： yang Yunqiong yang jiaxin FEI Shaojun ZHANG Zhirui LIU yang ZHANG Hao School of Environmental and Chemical Engineering Jiangsu Ocean UniversityLianyungang222005China

Here a fluorescent probe based on a carbazole derivative(CNS)was developed to increase the detection range and reduce the detection limit of brilliant *** of CNS are *** to the quenching ability of colorants,CNS shows an excellent current response to brilliant blue(from 1 to 10μM)with a detection limit of 2.7×10^(-8)mol/L(3σ/k)in the conditions of a 1:1 volume ratio of water to *** the stability and reproducibility of CNS in the detection of actual samples indicate great potential for application.

关键词： fluorescent probe carbazole derivative brilliant blue detection

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The proteasome activator subunit PSME1 promotes HBV replication by inhibiting the degradation of HBV core protein

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Genes & Diseases 2024年第6期11卷 395-408页

作者： Yu Liu jiaxin yang Yanyan Wang Qiqi Zeng Yao Fan Ailong Huang Hui Fan The Key Laboratory of Molecular Biology of Infectious Diseases Designated by the Chinese Ministry of Education Chongqing Medical UniversityChongqing 400016China The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University LuzhouSichuan 646000China

Chronic hepatitis B virus(HBV)infection is a leading cause of liver cirrhosis and he-patocellular carcinoma,representing a global health problem for which a functional cure is difficult to *** HBV core protein(HBc)is essential for multiple steps in the viral life *** is the building block of the nucleocapsid in which viral DNA reverse transcription oc-curs,and its mediation role in viral-host cell interactions is critical to HBV infection ***,systematic studies targeting HBc-interacting proteins remain ***,we combined HBc with the APEX2 to systematically identify HBc-related host proteins in living *** functional screening,we confirmed that proteasome activator subunit 1(PSME1)is a potent HBV-associated host ***1 expression was up-regulated upon HBV infection,and the protein level of HBc decreased after PSME1 ***,the interac-tion between PSME1 and HBc inhibited the degradation of HBc by the 26S proteasome,thereby improving the stability of the HBc ***,PSME1 silencing inhibits HBV tran-scription in the HBV infection *** findings reveal an important mechanism by which PSME1 regulates HBc proteins and may facilitate the development of new antiviral therapies targeting PSME1 function.

关键词： 26S proteasome APEX2 HBc HBV Host-viral interactions PSME1

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The Media Logic and Cultural Impact of WeChat

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Open Journal of Applied Sciences 2024年第7期14卷 1754-1761页

作者： jiaxin yang The Faculty of Arts and Social Science The University of Sydney Sydney Australia

Through its media logic, which is defined by programmability, pervasiveness, connectivity, and datafication, WeChat establishes a non-linear, interactive, and user-dominated media environment. This media logic enhances the influence of each user within WeChat’s narrative landscape and revolutionises traditional media narration methods by enabling them to generate and distribute content. In such an environment, users are able to edit, receive, and send information without constraints of time or distance, which enables delayed interactions that broaden the potential for human communication and dissemination. Additionally, WeChat partially replaces social behaviours and institutions, thereby modifying their original structures and characteristics. As individuals become more accustomed to this media environment, they progressively adjust to the forms that are appropriate for media representation on WeChat, thereby completing the mediatization of culture and society. In this process, individuals are becoming more dependent on media and media logic, with WeChat’s influence permeating social and cultural activities through its media logic. This interaction has a substantial impact on society and culture, thereby aiding in their reconstruction.

关键词： Social Media Media Logic Non-Linear Narratives User Engagement Mediatization

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Computational fluid dynamics simulation and experimental study on mixing performance of a three-dimensional circular cyclone-type microreactor

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Chinese Chemical Letters 2024年第4期35卷 382-388页

作者： Shiyu Hou Maolin Sun Liming Cao Chaoming Liang jiaxin yang Xinggui Zhou Jinxing Ye Ruihua Cheng School of Chemical Engineering East China University of Science and TechnologyShanghai 200237China School of Biomedical and Pharmaceutical Sciences Guangdong University of TechnologyGuangzhou 510006China School of Pharmacy East China University of Science and TechnologyShanghai 200237China

Microchannels enable the fast and efficient mixing of multiphase *** this study, a millimeter-scale three-dimensional(3D) circular cyclone-type microreactor was designed for the *** flow characteristics and mixing intensity were simulated by computational fluid dynamics simulations at a flow rate range of 12–96 m L/min using a water/ethyl acetate *** the 3D variable-diameter structure,the microreactor induced paired opposite vortices and abruptly changed the local pressure to achieve a stable turbulent effect within the theoretical range of laminar *** injection simulations indicated that sufficient mixing units successfully promote fluid ***-coupling experiments showed a segregation index of X_S= 0.00,039 within a residence time of 9 *** experiments on the nbutanol/succinic acid/water system showed that the 3D circular cyclone-type microreactor achieved 100%extraction efficiency(E) in 4.25 s, and the overall volume mass transfer coefficient(K_La) reached 0.05–1.5s^(-1) in 12–96 m L/*** isolated yield of the phase transfer alkylation and oxidation reactions in the 3D circular cyclone-type microreactor achieved 99% within 36 s, which was superior to the coil microreactor and batch reactor.

关键词： Microfluidics Passive microreactor CFD simulation Extraction Liquid-liquid biphase reaction

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How Rustic Videos Influence Youth’s Linguistic Expression: An Analysis Based on Semiotics, Meme Theory and Media Spectacle Theory

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Open Journal of Applied Sciences 2024年第7期14卷 1648-1665页

作者： jiaxin yang Faculty of Arts and Social Science The University of Sydney Sydney Australia

The surge in popularity of rustic videos has spawned a great number of Internet memes, such as Internet trendy words growing from dialects and strange pronunciations, picture memes made from video screenshots, and mesmerizing music with a vernacular flavor. Due to their reproducibility, social interaction, and involvement, these rustic videos adhere to the fundamental logic of the propagation of online memes. Rustic videos are widely disseminated as online memes on TikTok (the Chinese version), are often reproduced and used by young people in social contact, and have become a unique linguistic symbol in modern internet culture. As a symbolic carrier that transports the consciousness of the video creator and viewer, it is widely employed in the communication and engagement of young people on a regular basis, progressively altering their linguistic expression. This specific semiotic interaction has deconstructed and recreated the conventional media culture spectacle. This research examines the influence of rustic videos on TikTok on the linguistic expressions of modern youth from the perspectives of meme theory and semiotics, as well as the impact of rustic videos on the media spectacle from the standpoint of media spectacle theory. It also examines in depth the effects of the popularity of rustic videos on China’s economy and culture.

关键词： Rustic Videos Linguistic Expression Semiotics Meme Media Spectacle

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FKF1 F-box protein promotes flowering in part by negatively regulating DELLA protein stability under long-day photoperiod in Arabidopsis^FA

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Journal of Integrative Plant Biology 2020年第11期62卷 1717-1740页

作者： Jindong Yan Xinmei Li Bingjie Zeng Ming Zhong jiaxin yang Piao yang Xin Li Chongsheng He Jianzhong Lin Xuanming Liu Xiaoying Zhao College of Biology Hunan Province Key Laboratory of Plant Functional Genomics and Developmental RegulationState Key Laboratory of Chemo/Biosensing and ChemometricsHunan UniversityChangsha 410082China Shenzhen Institute Hunan UniversityShenzhen 518057China

FLAVIN-BINDING KELCH REPEAT F-BOX 1(FKF1)encodes an F-box protein that regulates photoperiod flowering in Arabidopsis under long-day conditions(LDs).Gibberellin(GA)is also important for regulating flowering under ***,how FKF1 and the GA pathway work in concert in regulating flowering is not fully ***,we showed that the mutation of FKF1 could cause accumulation of DELLA proteins,which are crucial repressors in GA signaling pathway,thereby reducing plant sensitivity to GA in *** in vitro and in vivo biochemical analyses demonstrated that FKF1 directly interacted with DELLA ***,we showed that FKF1 promoted ubiquitination and degradation of DELLA *** of genetic data revealed that FKF1 acted partially through DELLAs to regulate flowering under *** addition,DELLAs exerted a negative feedback on FKF1 ***,these findings demonstrate that FKF1 promotes flowering partially by negatively regulating DELLA protein stability under LDs,and suggesting a potential mechanism linking the FKF1 to the GA signaling DELLA proteins.

关键词： expression. photoperiod stability

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Well-balanced ambipolar diketopyrrolopyrrole-based copolymers for OFETs,inverters and frequency doublers

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Science China Chemistry 2021年第8期64卷 1410-1416页

作者： jiaxin yang Qingqing Liu Mengxiao Hu Shang Ding Jinyu Liu Yongshuai Wang Dan Liu Haikuo Gao Wenping Hu Huanli Dong Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing100049China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and EngineeringTianjin300072China

Conjugated polymers with well-balanced ambipolar charge transport is essential for organic circuits at low cost and large area with simplified fabrication *** at this point,herein,a novel asymmetric thiophene/pyridine-flanked diketopyrrolopyrrole-based copolymer(PPyTDPP-2FBT)is designed and *** to the effect of incorporating F atoms on molecular energy alignment and conjugation conformation,the PPyTDPP-2FBT copolymer exhibits typical V-shaped ambipolar field-effect transfer characteristics with well-balanced hole and electron mobilities of 0.64 and 0.46 cm^(2)V^(−1)s^(−1),***,organic digital and analog circuits such as inverters and frequency doublers are successfully constructed based on solution-processed films of the PPyTDPP-2FBT copolymers which show a typical circuit operating mode with a high gain of 133 due to the well-balanced electrical *** addition,PPyTDPP-2FBT-based devices also demonstrate good stability and batch repeatability,suggesting their great potential applications in organic integrated electronic circuits.

关键词： conjugated polymers balanced ambipolar transport property organic field effect transistor inverter frequency doubler

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The blue light receptor CRY1 interacts with GID1 and DELLA proteins to repress GA signaling during photomorphogenesis in Arabidopsis

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Molecular Plant 2021年第8期14卷 1328-1342页

作者： Ming Zhong Bingjie Zeng Dongying Tang jiaxin yang Lina Qu Jindong Yan Xiaochuan Wang Xin Li Xuanming Liu Xiaoying Zhao College of Biology Hunan Province Key Laboratory of Plant Functional Genomics and Developmental RegulationHunan Hybrid Rape Engineering and Technology Research CenterHunan UniversityChangsha 410082China Shenzhen Institute Hunan UniversityShenzhen 518057China

Light is a critical environmental cue that regulates a variety of diverse plant developmental *** 1(CRY1)is the major photoreceptor that mediates blue light-dependent photomorphogenic responses such as the inhibition of hypocotyl ***(GA)participates in the repression of photomorphogenesis and promotes hypocotyl ***,the antagonistic interaction between blue light and GA is not well ***,we report that blue light represses GA-induced degradation of the DELLA proteins(DELLAs),which are key negative regulators in the GA signaling pathway,via CRY1,thereby inhibiting the GA response during hypocotyl *** in vitro and in vivo biochemical analyses demonstrated that CRY1 physically interacts with GA receptors-GA-INSENSITIVE DWARF 1 proteins(GID1s)-and DELLAs in a blue light-dependent ***,we showed that CRY1 inhibits the association between GID1s and ***,CRY1 antagonizes the function of GID1s to repress the expression of cell elongation-related genes and thus hypocotyl *** together,our findings demonstrate that CRY1 coordinates blue light and GA signali ng for plant photomorphogenesis by stabilizing DELLAs through the binding and in activation of GID1s,providing new in sights into the mechanism by which blue light antagonizes the function of GA in photomorphogenesis.

关键词： cryptochrome 1 blue light gibberellic acid GID1 DELLA proteins

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The PHYB–FOF2–VOZ2 module functions to finetune flowering in response to changes in light quality by modulating FLC expression in Arabidopsis

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Plant Communications 2024年第7期5卷 231-250页

作者： Lina Qu Ming Zhong Feifei Duan Xinmei Li jiaxin yang Quanyu Zhou Dongying Tang Reqing He Xuanming Liu Xiaoying Zhao College of Biology Hunan Province Key Laboratory of Plant Functional Genomics and Developmental RegulationHunan Engineering and Technology Research Center of Hybrid RapeseedHunan UniversityChangsha 410082China Shenzhen Institute Hunan UniversityShenzhen 518057China These authors contributed equally to this article

Proper timing of flowering under different environmental conditions is critical for plant *** quality is a pivotal environmental cue that plays a critical role in flowering *** tend to flower late under light with a high red(R)/far-red(FR)light ratio but early under light with a low R/FR light ***,how plants fine-tune flowering in response to changes in light quality is not well ***,we demonstrate that F-box of Flowering 2(FOF2),an autonomous pathway–related regulator,physically interacts with VASCULAR PLANT ONE-ZINC FINGER 1 and 2(VOZ1 and VOZ2),which are direct downstream factors of the R/FR light receptor phytochrome B(PHYB).We show that PHYB physically interacts with FOF2,mediates stabilization of the FOF2 protein under FR light and end-of-day FR light,and enhances FOF2 binding to VOZ2,which leads to degradation of VOZ2 by SCF^(FOF2) E3 *** contrast,PHYB mediates degradation of FOF2 protein under R light and end-of-day R *** interaction studies demonstrated that FOF2 functions downstream of PHYB to promote FLC expression and inhibit flowering under both high R/FR light and simulated shade conditions,processes that are partially dependent on VOZ *** together,our findings suggest a novel mechanism whereby plants fine-tune flowering time through a PHYB–FOF2–VOZ2 module that modulates FLC expression in response to changes in light quality.

关键词： PHYB FOF2 VOZ proteins FLC light quality flowering time

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