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The pseudospectrum and spectrum (in)stability of quantum corrected Schwarzschild black hole

Science China(Physics,Mechanics & Astronomy) 2024年第10期Mechanics & Astronomy) .卷 59-79页

作者： Li-Ming Cao Jia-Ning Chen liang-bi wu Libo Xie Yu-Sen Zhou Peng Huanwu Center for Fundamental Theory Interdisciplinary Center for Theoretical Study and Department of Modern Physics University of Science and Technology of China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCAS

In this study, we investigate the pseudospectrum and spectrum(in)stability of quantum corrected Schwarzschild black ***, we use the hyperboloidal framework to cast the quasinormal mode(QNM) problem into an eigenvalue problem associated with a non-selfadjoint operator, and then the spectrum and pseudospectrum are depicted. Besides, the invariant subspace method is exploited to improve the computational efficiency for pseudospectrum. The investigation into the spectrum(in)stability entails two main aspects. On the one hand, we calculate the spectra of the quantum corrected black hole, then by the means of the migration ratio, the impact of the quantum correction effect on the Schwarzschild black hole has been *** results indicate that the so-called “migration ratio instability” will occur for small black holes with small angular momentum number l. In the eikonal limit, the migration ratios remain the same for each overtone. On the other hand, we study the spectrum(in)stability of the quantum corrected black hole by directly adding some particular perturbations into the effective potential,where perturbations are located at the event horizon and null infinity, respectively. There are two interesting observations under the same perturbation energy norm. First, perturbations at infinity are more capable of generating spectrum instability than those at the event horizon. Second, we find that the peak distribution can lead to the instability of QNM spectrum more efficiently than the average distribution.

关键词： quasinormal modes pseudospectrum hyperboloidal coordinate

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Design,synthesis and evaluation of novel cis-p-menthane type Schiff base compounds as effective herbicides

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Chinese Chemical Letters 2017年第7期28卷 1509-1513页

作者： Shi-Chao Xu Shou-Ji Zhu Jing Wang liang-wu bi Yu-Xiang Chen Yan-Ju Lu Yan Gu Zhen-Dong Zhao Institute of Chemical Industry of Forest Products Chinese Academy of ForestryNanjing 210042China Key Lab of Bioraass Energy and Materialjiangsu ProvinceNanjing 210042China National Engineering Lab.for biomass Chemical Utilization Nanjing 210042China Key and Open Lab.on Forest Chemical Engineering State Forestry AdministrationNanjing 210042China Institute of Forestry New Technology Chinese Academy of ForestryBeijing 100091China 2011 Collaborative Innovation Center of jiangxi Typical Trees Cultivation and Utilization in jiangxi Agricultural University Nanchang 330045China

p-Menthane type monoterpene derivatives were identified as bio-based compounds with high herbicidal activities. In order to search novel p-menthane type monoterpene derivatives in good performance, a series of novel cis-p-menthane type Schiff base derivatives were designed and synthesized. All target products were easily available novel compounds and characterized by FT-IR,^1H NMR,^13 C NMR and ESI＋-MS. Their pre-emergence herbicidal activities against annual ryegrass were evaluated. The bioassays indicated that most of the target compounds displayed excellent herbicidal activities in pre-emergence treatment.

关键词： Turpentine derivatives bio-based herbicides p-Menthane type compounds Schiff base derivatives Herbicidal activity

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Solvent and additive-free selective aerobic allylic hydroxylation of β-pinene catalyzed by metalloporphyrins

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Chinese Chemical Letters 2017年第3期28卷 575-578页

作者： Shi-Chao Xu Shou-Ji Zhu liang-wu bi Yu-Xiang Chen Jing Wang Yan-Ju Lu Yan Gu Zhen-Dong Zhao Institute of Chemical Industry of Forest Products Chinese Academy of Forestry Nanjing 210042 China Key Lab. of biomass Energy and Material Jiangsu Province Nanjing 210042 China National Engineering Lab. for biomass Chemical Utilization Nanjing 210042 China Key and Open Lab. on Forest Chemical Engineering State Forestry Administration Nanjing 210042 China Institute of Forestry New Technology Chinese Academy of Forestry Beijing 100091 China 2011 Collaborative Innovation Center of Jiangxi Typical Trees Cultivation and Utilization in Jiangni Agricultural University Nanchang 330045 China

Metallodeuteroporphyrins（MDPs） were employed as the catalysts for aerobic oxidation of β-pinene in absence of solvents and additives. Allylic hydroxylation products were found to be the main products from this protocol. The catalytic activity of MDPs with different metal nuclei and the influences of technological conditions on this reaction were investigated. This catalytic system has bright application prospect since only eco-friendly and readily available dioxygen were needed.

关键词： Turpentine transformatio β-Pinene Metalloporphyrin biomimetic catalysis Aerobic allylic hydroxylation

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Research on Credit Default Swaps Pricing Considering Moral Hazard Incentive under Reduce-Form Model

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Journal of Systems Science and Systems Engineering 2024年第3期33卷 311-329页

作者： liang wu Kangjie He Zhe Guo School of Mathematical Science Henan Institute of Science and TechnologyXinxiang453003China Public Front Office Department Industrial and Commercial Bank of ChinaZhengzhou450000China

Equilibrium pricing of credit default swaps(CDS)promotes efficient identification of credit risk in the market,which in turn leads to efficient allocation of ***,even when CDS have been priced in equilibrium,i.e.,when premiums are equal to anticipated payments,the moral hazard incentives of CDS buyers increase with CDS ***,it becomes an interesting research direction to study the impact of moral hazard incentives on the trading mechanism or pricing of derivatives(CDS).Most of the existing literature on the impact of moral hazard incentives in CDS pricing on derivatives trading mechanisms takes a macro perspective and focuses on the agreement risk *** literature exploring the analysis of the impact of moral hazard on the probability of agreement default from a micro perspective is not yet *** this in mind,this paper focuses on the mechanisms by which“fraud”,an extreme manifestation of micro-moral hazard incentives,affects the probability of *** paper introduces for the first time the concept of“claiming fraud”by credit protection buyers,which is different from the macro perspective of moral hazard incentives,and thus defines a specific extreme form of moral hazard ***,to address the intrinsic feature of the lack of economic explanatory power of the reduce-form model,this paper introduces a moral hazard incentive factor into the reduce-form model,and proposes a moral hazard state variable as a function of the asset value of the reference entity,which gives the reduce-form model strong economic explanatory power,and the default predictability is reduced by the description of the reduce-form *** terms of the object of study,this paper considers the issue of moral hazard incentives in the presence of claiming fraud in two reference entities to further explore the impact of moral hazard incentives on default protection at the micro level in terms of cyclic ***,based on the

关键词： Financial engineering moral hazard incentive claiming fraud reduce-form model probability of default calculation CDS pricing

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Resource allocation for D2D-assisted haptic communications

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Digital Communications and Networks 2024年第1期10卷 63-74页

作者： Yan wu Chao Yue Yang Yang liang Ao College of Telecommunication Engineering Army Engineering University of PLANanjing210000China

Haptic communications is recognized as a promising enabler of extensive services by enabling real-time haptic control and feedback in remote environments,e.g.,teleoperation and autonomous *** the strict transmission requirements on reliability and latency,Device-to-Device(D2D)communications is introduced to assist haptic *** particular,the teleoperators with poor channel quality are assisted by auxiliaries,and each auxiliary and its corresponding teleoperator constitute a D2D ***,the haptic interaction and the scarcity of radio resources pose severe challenges to the resource allocation,especially facing the sporadic packet ***,the contentionbased access scheme is applied to achieve low-latency transmission,where the resource scheduling latency is omitted and users can directly access available *** this context,we derive the reliability index of D2D pairs under the contention-based access scheme,i.e.,closed-loop packet error ***,the reliability performance is guaranteed by bidirectional power control,which aims to minimize the sum packet error probability of all D2D *** game theory is introduced to solve the problem with low ***,a distributed power control algorithm based on synchronous log-linear learning is proposed to converge to the optimal Nash *** results demonstrate the superiority of the proposed learning algorithm.

关键词： Haptic communications D2D Power control Contention-based access Potential game

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Recent progress in MOFs-based nanozymes for biosensing

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Nano Research 2024年第1期17卷 39-64页

作者： Imamdin Chandio Yongjian Ai Lei wu Qionglin liang MOE Key Laboratory of bioorganic Phosphorus Chemistry&Chemical biology Department of ChemistryLaboratory of Flexible Electronics TechnologyCenter for Synthetic and Systems BiologyTsinghua University-Peking University Joint Centre for Life SciencesTsinghua UniversityBeijing 100084China

Nanozymes are nanomaterials with enzyme-mimicking catalytic *** to natural enzymes,nanozymes show various properties such as easy to manufacture,stable,adjustable,and *** play key roles in biosensing,biocatalysis,and disease *** an important kind of nanozymes,metal-organic framework(MOF)-based nanozymes are receiving a lot of attention due to their structural properties and *** developing MOF with enzymes-like catalytic properties has opened new perspectives in *** review summarizes the up-to-date developments in synthesizing two-dimensional and three-dimensional MOF-based nanozymes and their applications in ***,classification of nanozymes obtained by MOFs is categorized,and different properties of MOF-based nanozymes are ***,the distinctive applications of MOF-based nanozymes in identifying various analytes are thoroughly ***,the recent challenges and progressive directions in this area are highlighted.

关键词： metal-organic frameworks nanozymes metal-organic framework (MOF)-based nanozymes biosensing analytes

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Role of ferroptosis in fibrosis:From mechanism to potential therapy

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Chinese Medical Journal 2024年第7期137卷 806-817页

作者： Xuemeng Qiu Qing bi Jiyue wu Zejia Sun Wei Wang Department of Urology Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Department of Surgery Third Clinical Medical CollegeCapital Medical UniversityBeijing 100020China Urinary and Nephropathy Center Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Institute of Urology Capital Medical UniversityBeijing 100020China

Fibrosis,which is a manifestation of the physiological response to injury characterized by excessive accumulation of extracellular matrix components,is a ubiquitous outcome of the repair ***,in cases of repetitive or severe injury,fibrosis may become dysregulated,leading to a pathological state and organ *** recent years,a novel form of regulated cell death,referred to as ferroptosis,has been identified as a possible contributor to fibrosis;it is characterized by iron-mediated lipid *** has garnered attention due to the growing body of evidence linking ferroptosis and fibrogenesis,which is believed to be driven by underlying inflammation and immune *** the increasing interest in the relationship between ferroptosis and fibrosis,a comprehensive understanding of the precise role that ferroptosis plays in the formation of fibrotic tissue remains *** review seeks to synthesize previous research related to the *** categorized the different direct and indirect mechanisms by which ferroptosis may contribute to fibrosis into three categories:(1)iron overload toxicity;(2)ferroptosis-evoked necroinflammation,with a focus on ferroptosis and macrophage interplay;and(3)ferroptosis-associated pro-fibrotic factors and ***,the review considers the potential implications of these findings and highlights the utilization of ferroptosis-targeted therapies as a promising strategy for mitigating the progression of *** conclusion,novel anti-fibrotic treatments targeting ferroptosis could be an effective treatment for fibrosis.

关键词： Ferroptosis Fibrosis Anti-fibrotic Iron metabolism Necroinflammation Epithelial-mesenchymal transition

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High-Voltage and Fast-Charging Lithium Cobalt Oxide Cathodes: From Key Challenges and Strategies to Future Perspectives

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Engineering 2024年第6期37卷 105-127页

作者： Gongrui Wang Zhihong bi Anping Zhang Pratteek Das Hu Lin Zhong-Shuai wu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023China

Lithium-ion batteries(LIBs)with the“double-high”characteristics of high energy density and high power density are in urgent demand for facilitating the development of advanced portable ***,the lithium ion(Li+)-storage performance of the most commercialized lithium cobalt oxide(LiCoO_(2),LCO)cathodes is still far from satisfactory in terms of high-voltage and fast-charging capabilities for reaching the double-high ***,we systematically summarize and discuss high-voltage and fast-charging LCO cathodes,covering in depth the key fundamental challenges,latest advancements in modification strategies,and future perspectives in this *** and elaborated discussions are first presented on key fundamental challenges related to structural degradation,interfacial instability,the inhomogeneity reactions,and sluggish interfacial *** provide an instructive summary of deep insights into promising modification strategies and underlying mechanisms,categorized into element doping(Li-site,cobalt-/oxygen-site,and multi-site doping)for improved Li+diffusivity and bulkstructure stability;surface coating(dielectrics,ionic/electronic conductors,and their combination)for surface stability and conductivity;nanosizing;combinations of these strategies;and other strategies(i.e.,optimization of the electrolyte,binder,tortuosity of electrodes,charging protocols,and prelithiation methods).Finally,forward-looking perspectives and promising directions are sketched out and insightfully elucidated,providing constructive suggestions and instructions for designing and realizing high-voltage and fast-charging LCO cathodes for next-generation double-high LIBs.

关键词： Lithium cobalt oxide High energy/power density Fast-charging High-voltage Lithium-ion battery

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Screening of transition metal oxides for electrocatalytic nitrate reduction to ammonia at large currents

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Nano Research 2024年第5期17卷 3902-3910页

作者： Qiongfei wu Weijie Zhu Dongxu Ma Chao liang Zhoucheng Wang Hanfeng liang State Key Laboratory of Physical Chemistry of Solid Surfaces Tan Kah Kee Innovation LaboratoryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Chemical Engineering Tianjin UniversityTianjin 300072China

Electrochemical nitrate reduction reaction(NO_(3)RR)towards ammonia,as an emerging and appealing technology alternative to the energy-intensive Haber-Bosch process and inefficient nitrogen reduction reaction,has recently aroused wide concern and ***,the current research of the NO_(3)RR towards ammonia lacks the overall performance comparison of various *** this,we here make a comparison of 12 common transition metal oxide catalysts for the NO_(3)RR under a high cathodic current density of 0.25 A·cm^(-2),wherein Co_(3)O_(4) catalyst displays the highest ammonia Faradaic efficiency(85.15%)and moderate activity(ca.-0.25 V *** hydrogen electrode).Other external factors,such as nitrate concentrations in the electrolyte and applied potential ranges,have also been specifically investigated for the NO_(3)RR.

关键词： nitrate reduction reaction ammonia production transition metal oxides Co_(3)O_(4)

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Type one autoimmune pancreatitis based on clinical diagnosis: A case report

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World Journal of Clinical Cases 2024年第14期12卷 2438-2444页

作者： bi-Yu Zhang Mou-Wang liang Shuang-Xi Zhang Department of Gastroenterology Guangzhou University of Chinese Medicine Shunde HospitalFoshan 528300Guangdong ProvinceChina Department of Gastroenterology Guangzhou University of Chinese MedicineGuangzhou 510006Guangdong ProvinceChina

BACKGROUND Autoimmune pancreatitis(AIP)is a rare form of autoimmune-mediated pancrea-titis,which is easily misdiagnosed as pancreatic cancer and thus treated *** studied the diagnosis and treatment of a patient with type 1 AIP recent-ly admitted to our hospital,and reviewed the literature to provide a reference for clinical diagnosis of *** SUMMARY The chief complaint was yellowing of the body,eyes and urine for 21 *** pa-tient's clinical presentation was obstructive jaundice and imaging suggested pan-creatic *** was difficult to distinguish between inflammation and *** immunoglobulin G4(IgG4)was markedly ***4 is an important serological marker for type 1 *** patient was diagnosed with AIP,IgG4-related cholangitis,acute cholecystitis and hepatic *** applying hormonal therapy,the patient's symptoms improved *** the same time,imaging suggested that pancreatic swelling subsided,and liver function and other biochemical indicators *** treatment was *** In patients with pancreatic swelling,the possibility of AIP should be considered.

关键词： Autoimmune pancreatitis Characteristics Diagnosis Immunoglobulin G4 Case report

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