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Additional observational features of the thin-shell wormhole by considering quantum corrections

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Chinese Physics C 2024年第12期48卷 200-211页

作者： yun-xian chen He-Bin Zheng Ke-Jian He Guo-Ping Li Qing-Quan Jiang Physics and Space College China West Normal UniversityNanchong 637000China School of Civil Engineering Chongqing Jiaotong University 400074China

By considering an asymmetric thin-shell wormhole(ATSW)surrounded by an optically and geometrically thin disk,we investigate the luminosity distribution of this ATSW with the spacetime on two sides encoded with the renormalization group improved(RGI)parameters(Ω,γ).Although some light rays are absorbed into the throat in the vicinity of the wormhole,they return through the throat with certain conditions,unlike in the case of black *** spacetime on one side of the wormhole can capture the additional photons emitted from the thin disk,resulting in several interesting observable features of the *** results in this paper show that there are two additional orbit numbers n in the ATSW and six transfer functions,rather than three as in the black hole *** this case,the ATSW indeed has a more complex observable structure,where some additional light rings arise *** instance,there are two additional photon rings for the emitted Model ***,we also find a new wide hump between the first and second additional photon rings in Model *** effects of Ω and γ on the observed images are clearly addressed throughout this study,and the influence of Ω is found to be ***,we conclude that the observations of the RGI-ATSW can help further distinguish it from other ATSWs and black holes when a thin accretion disk exists around it.

关键词： additional observational features thin-shell wormhole photon rings quantum corrections

The shadow and observation appearance of black hole surrounded by the dust field in Rastall theory

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Chinese Physics B 2023年第1期32卷 196-206页

作者：朱轩然陈芸仙牟平辉何柯腱 Chongqing College of Mobile Communication Chongqing 401520China Physics and Space College China West Normal UniversityNanchong 637000China Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics Chongqing UniversityChongqing 401331China

In the context of Rastall gravity,the shadow and observation intensity casted by the new Kiselev-like black hole with dust field have been numerically *** this system,the Rastall parameter and surrounding dust field structure parameter have considerable consequences on the geometric structure of *** the photon trajectories near the black hole,we investigate the variation of the radii of photon sphere,event horizon and black hole shadow under the different related ***,taking into account two different spherically symmetric accretion models as the only background light source,we also studied the observed luminosity and intensity of black *** the both spherical accretions background,the results show that the decrease or increase of the observed luminosity depends on the value range of relevant parameters,and the promotion effect is far less obvious than the attenuation effect on the observed *** can find that the inner shadow region and outer bright region of the black hole wrapped by infalling accretion are significantly darker than those of the static model,which is closely related to the Doppler *** addition,the size of the shadow and the position of the photon sphere are always the same in the two accretion models,which means that the black hole shadow depend only on the geometry of spacetime,while the observation luminosity is affected by the form of accretion material and the related spacetime structure.

关键词： Rastall gravity black hole

Shadow thermodynamics of AdS black hole with the nonlinear electrodynamics term

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Chinese Physics B 2023年第8期32卷 201-208页

作者：郑何斌牟平辉陈芸仙李国平 School of Physics and Astronomy China West Normal UniversityNanchong 637000China

We creatively employ the shadow radius to study the thermodynamics of a charged Ad S black hole with a nonlinear electrodynamics(NLED)***,the connection between the shadow radius and event horizon is constructed with the aid of the geodesic *** turns out that the black hole shadow radius shows a positive correlation as a function of the event horizon *** in the shadow context,we find that the black hole temperature and heat capacity can be presented by the shadow *** analysis shows that the shadow radius can work similarly to the event horizon in revealing black hole phase transition *** this sense,we construct the thermal profile of the charged Ad S black hole with inclusion of the NLED *** the P

关键词： AdS black hole the nonlinear electrodynamics shadow thermodynamics

Washed microbiota transplantation reduces proton pump inhibitor dependency in nonerosive reflux disease

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World Journal of Gastroenterology 2021年第6期27卷 513-522页

作者： Ya-Mei Zheng xian-yun chen Jie-Yi Cai Yu Yuan Wen-Rui Xie Jia-Ting Xu Harry Hua-xiang Xia Min Zhang Xing-xiang He Li-Hao Wu Department of Gastroenterology The First Affiliated Hospital of Guangdong Pharmaceutical UniversityResearch Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong ProvinceGuangzhou 510030Guangdong ProvinceChina Department of Science and Education The First Affiliated Hospital of Guangdong Pharmaceutical UniversityGuangzhou 510030Guangdong ProvinceChina Department of Epidemiology and Health Statistics Guangdong Pharmaceutical UniversityGuangzhou 510220Guangdong ProvinceChina

BACKGROUND The pathogenesis of gastroesophageal reflux disease(GERD)is closely associated with the intestinal bacteria composition and their *** To investigate whether washed microbiota transplantation(WMT)improves symptoms of nonerosive reflux disease(NERD)with proton pump inhibitor(PPI)*** Patients with recurrent NERD and PPI dependency at the First Affiliated Hospital of Guangdong Pharmaceutical University from 2017 to 2018 were included and divided into a WMT or PPI group treated with PPI with/without *** endpoint was NERD symptom frequency evaluated 1 mo after WMT using reflux disease questionnaire(RDQ)and GERD questionnaire(GERDQ)scores,remission time,PPI dose,and the examination of intestinal mucosal barrier *** In the WMT(n=15)and PPI(n=12)groups,the total remission rate at 1 mo after treatment was 93.3%vs 41.7%.Compared with the PPI group,the WMT group showed better results in GERDQ(P=0.004)and RDQ(P=0.003)and in remission months(8 vs 2,P=0.002).The PPI dose was reduced to some extent for 80%of patients in the WMT group and 33.3%in the PPI *** 24 patients,intestinal mucosal barrier function was examined before treatment,and changes in the degree of damage were observed in 13 of these patients after *** one of the 15 patients had minor side effects,including a mushy stool two or three times a day,which resolved on their own after 1 *** This study is the first to demonstrate that WMT may be safe and effective for relieving NERD symptoms and reducing PPI dependency and recurrence.

关键词： Nonerosive reflux disease Washed microbiota transplantation Proton pump inhibitor dependency Intestinal bacteria Lipopolysaccharide Small intestinal bacterial overgrowth

Coordinated Control Strategy of New Energy Power Generation System with Hybrid Energy Storage Unit

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Energy Engineering 2025年第1期122卷 167-184页

作者： yun Zhang ZifenHan Biao Tian Ning chen Yi Fan School of Mechano-Electronic Engineering Xidian UniversityXi’an710071China Electric Power Control Center State Grid Gansu Electric Power CompanyLanzhou730030China Electric Power Control Center State Grid Gansu Electric Power Company Zhangye Power Supply BranchZhangye734000China

The new energy power generation is becoming increasingly important in the power *** as photovoltaic power generation has become a research hotspot,however,due to the characteristics of light radiation changes,photovoltaic power generation is unstable and random,resulting in a low utilization rate and directly affecting the stability of the power *** solve this problem,this paper proposes a coordinated control strategy for a newenergy power generation system with a hybrid energy storage unit based on the lithium iron phosphate-supercapacitor hybrid energy storage ***,the variational mode decomposition algorithm is used to separate the high and low frequencies of the power signal,which is conducive to the rapid and accurate suppression of the power fluctuation of the energy storage ***,the fuzzy control algorithm is introduced to balance the power between energy *** this paper,the actual data is used for simulation,and the simulation results show that the strategy realizes the effective suppression of the bus voltage fluctuation and the accurate control of the internal state of the energy storage unit,effectively avoiding problems such as overshoot and over-discharge,and can significantly improve the stability of the photovoltaic power generation systemand the stability of the Direct Current *** is of great significance to promote the development of collaborative control technology for photovoltaic hybrid energy storage units.

关键词： Photovoltaic power suppression hybrid energy storage unit variationalmodal decomposition fuzzy control power distribution control

Advances in Graphene‑Based Electrode for Triboelectric Nanogenerator

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Nano-Micro Letters 2025年第1期17卷 378-403页

作者： Bin Xie Yuanhui Guo yun chen Hao Zhang Jiawei Xiao Maoxiang Hou Huilong Liu Li Ma Xin chen Chingping Wong State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

With the continuous development of wearable electronics,wireless sensor networks and other micro-electronic devices,there is an increasingly urgent need for miniature,flexible and efficient nanopower generation *** nanogenerator(TENG)technology can convert small mechanical energy into electricity,which is expected to address this *** the core component of TENG,the choice of electrode materials significantly affects its *** metal electrode materials often suffer from problems such as durability,which limits the further application of ***,as a novel electrode material,shows excellent prospects for application in TENG owing to its unique structure and excellent electrical *** review systematically summarizes the recent research progress and application prospects of TENGs based on graphene *** precision processing methods of graphene electrodes are introduced,and the applications of graphene electrode-based TENGs in various scenarios as well as the enhancement of graphene electrodes for TENG performance are *** addition,the future development of graphene electrode-based TENGs is also prospectively discussed,aiming to promote the continuous advancement of graphene electrode-based TENGs.

关键词： Triboelectric nanogenerator Precision processing Graphene electrode Self-powered sensor

Physarum polycephalum-inspired adaptive optimization design of artificial microtubular networks

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Science China Chemistry 2025年

作者： Si-Min Zeng Di-Wei Zheng Ting Pan Xing-Lan Ding yun Zhang Chi-Hui Yang Si-Xue cheng xian-Zheng Zhang Key Laboratory of Biomedical Polymers of Ministry of Education&Department of Chemistry Wuhan University

Natural biological microtubular networks have undergone adaptive evolutionary selection and may offer viable solutions to design challenges in artificial microtubular networks. The plasmodium of the slime mold Physarum polycephalum(P. polycephalum) extends continuously to form a protoplasmic microtubular network structure, directly connecting food *** simulations revealed that the formation of this adaptive P. polycephalum microtubular network could be captured by a mathematical algorithm. Inspired by the P. polycephalum microtubular networks, we propose an adaptive optimization design method for artificial microtubular networks. Specifically, we utilized hydrogels with biodegradable and tissue-adhesive properties to replicate the P. polycephalum microtubular networks via photomask. In Rhodamine B diffusion and glucosecatalyzed reaction experiments, we found that the P. polycephalum microtubular networks exhibited significantly enhanced efficiency compared to vascular and artificial networks. Furthermore, we demonstrated the potential for uric acid(UA) degradation of the hydrogels with a real P. polycephalum microtubular network loaded with urate oxidase(UOx) in a rodent model of hyperuricemia. And this network achieved more than double the effect of the artificial network. This underscores the potential of natural microtubular networks to replace artificial microtubular networks.

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常压反应-减压精馏集成生产甲酸环己酯的过程模拟

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高校化学工程学报 2016年第5期30卷 1021-1026页

作者：王振松许戈汤吉海李云鹏陈献崔咪芬费兆阳乔旭南京工业大学材料化学工程国家重点实验室江苏南京210009 南京工业大学化工学院江苏省工业节水减排重点实验室江苏南京210009

采用"背包式"反应精馏集成方式(DCSR),建立了甲酸和环己烯加成生产甲酸环己酯的常压反应-减压精馏新型集成工艺,反应温度与精馏温度可以独立控制,避免了甲酸在温度超过60°C时发生分解副反应。通过模拟考察了催化剂装填量、反应器台数... 详细信息

采用"背包式"反应精馏集成方式(DCSR),建立了甲酸和环己烯加成生产甲酸环己酯的常压反应-减压精馏新型集成工艺,反应温度与精馏温度可以独立控制,避免了甲酸在温度超过60°C时发生分解副反应。通过模拟考察了催化剂装填量、反应器台数、塔底再沸热负荷、提馏段塔板数等参数对合成甲酸环己酯的DCSR过程的影响。结果表明,在甲酸与环己烯进料流率分别为10 mol×h^(-1)下,加成酯化生产甲酸环己酯的适宜DCSR过程参数为:侧反应器台数为2台、精馏塔板数为7块板(不包含塔顶冷凝器)、塔底再沸功率为130 W、催化剂装填总量为0.6 kg、精馏塔的操作压力为10 k Pa,在反应能力与分离能力达到最优匹配时,DCSR过程的催化剂用量仅为传统反应精馏过程的30%,提高了催化剂效率,降低了设备和生产成本。

关键词：反应精馏甲酸环己酯过程集成加成反应

Trinuclear gold-catalyzed site-selective alkylation of peptides

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Science China Chemistry 2025年第1期 249-256页

作者： Qing-yun Fang chengyihan Gu Yinghan chen Wencheng Yan Yong Liang Weipeng Li chengjian Zhu Jie Han Jin Xie State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Chemistry and Biomedicine Innovation Center (Chem BIC) School of Chemistry and Chemical Engineering Nanjing University Green Catalysis Center College of Chemistry Zhengzhou University State Key Laboratory of Natural Medicines China Pharmaceutical University

Selective modification of peptides has always been a challenging issue. The selective alkylation of peptides can alter the biological activity and physical properties of molecules, and it has gained significant research interest. We herein disclose an intriguing gold-catalyzed alkylation of peptides using bench-stable unactivated alkyl bromides under photoredox catalysis. A wide range of structurally diverse primary, secondary and tertiary alkyl bromides serve as effective coupling partners to precisely connect with the α-C(sp3)–H in glycine residue of peptides. This protocol demonstrates an exceptionally broad scope for alkyl halides and excellent tolerance for a wide range of useful functional groups. A series of relay transformations to construct cyclic peptides, to proceed click reaction and to realize peptide fluorescence labeling further enhance its synthetic practicality. In addition, mechanistic studies and density functional theory(DFT) calculations reveal an inner-sphere and subsequent outersphere single electron transfer(SET) mechanism.

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