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Ultrafast optical modulation of the fluorescence from a single-photon emitter in silicon carbide

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Photonics Research 2024年第5期12卷 941-946页

作者： MENGTING HE YUJING CAO juNJIE LIN ZHIPING ju BOTAO WU E WU State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China Photon Technology(Zhejiang)Co. Ltd.Jiaxing 314100China National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200000China Department of Physics and Shanghai Key Laboratory for Magnetic Resonance East China Normal UniversityShanghai 200241China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401120China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

The quest for the room-temperature optical transistor based on nonlinearities in single atoms or molecules is attracting a lot of *** this work,a single-photon emitter in cubic silicon carbide is verified that can operate as an optical switch at room temperature under pulsed green laser illumination with a near-infrared pulsed laser as the control *** demonstrated an ultrafast and reversible optical modulation with a high photoluminescence intensity suppression ratio up to 97.9%and a response time as short as 287.9±5.7 *** current development provides insights for high-precision and ultrafast optical switches,with possibilities for integration with emerging electronic installations to realize more intelligent photoelectric integrated devices.

关键词： emitter carbide photon

基于多层利益共享的虚拟电厂参与电碳市场分布鲁棒优化模型

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系统工程理论与实践 2024年第2期44卷 661-683页

作者：樊伟范英谭忠富鞠立伟姚星北京航空航天大学经济管理学院北京100191 北京航空航天大学低碳治理与政策智能教育部实验室北京100191 华北电力大学经济与管理学院北京102206

风电和光伏的高渗透率增加了新型电力系统对灵活性资源需求.虚拟电厂作为一个特殊电厂聚合了可控分布式电源、新能源、储能、碳处理、负荷等各类资源,“对内协同”可以实现内部资源协同调控,“对外统一”可以参与外部电碳市场获利.基于... 详细信息

风电和光伏的高渗透率增加了新型电力系统对灵活性资源需求.虚拟电厂作为一个特殊电厂聚合了可控分布式电源、新能源、储能、碳处理、负荷等各类资源,“对内协同”可以实现内部资源协同调控,“对外统一”可以参与外部电碳市场获利.基于此,本文创新地提出了虚拟电厂参与电碳多类市场分布鲁棒优化模型.为了刻画风电和光伏的不确定性,构造了基于Wasserstein距离的分布模糊集和基于数据驱动的误差不确定集.为了兼顾经济性和鲁棒性,考虑内部运行成本以及外部参与多类市场收益,构建了最坏分布下期望收益最大的两阶段鲁棒优化模型,并提出模型求解方法.为了保证联盟动态平衡,提出了多层利益分配方法.最后,算例分析表明:在“对内协同,对外统一”的经营模式下,有效激发虚拟电厂内各类资源的潜力,参与多个市场后获取共享利益,实现了多方互利共赢.所提模型具有数据驱动、快速求解、灵活可控、经济实用等优越性.多层利益分配方法能够简便、有效地将共享效益传导至各主体.

关键词：虚拟电厂现货市场辅助服务市场碳交易市场分布鲁棒优化多层利益共享

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Navigating the controversy regarding antibiotic prophylaxis in acute variceal bleeding

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World Journal of Gastroenterology 2024年第18期30卷 2485-2487页

作者： David Aguirre-Villarreal Ignacio García-juárez Department of Gastroenterology and Liver Transplant Unit Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico

Antibiotic prophylaxis in patients with cirrhosis and acute variceal bleeding is part of the standard of care according to most clinical ***,with recent evidence arguing against antibiotic prophylaxis,the role of this... 详细信息

关键词： Cirrhosis Acute variceal bleeding Antibiotic prophylaxis Endoscopic band ligation Spontaneous bacterial peritonitis

Shape optimisation of basin insulator for DC gas insulated switchgear/gas insulated transmission lines based on artificial bee colony algorithm

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High Voltage 2024年第2期9卷 275-286页

作者： Yi Luo Shiyi Mao ju tang Zijun Pan Cheng Pan State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and AutomationWuhan UniversityWuhanChina

The surface charge accumulation on the basin insulator is a particular problem in high-voltage direct current(HVDC)gas insulated switchgears(GIS)and gas insulated trans-mission lines(GIL),which restricts the development and application of extra/ultra high-voltage(EHV/UHV)*** surface charge distribution and anti-flashover performance are closely related to the insulator *** obtain the optimal basin insulator,a shape optimisation model based on artificial bee colony algorithm was established,and the minimisation objective functions based on capacitive(initial)electric field distribution and resistive(steady-state)electric field distribution were respectively *** optimisation results of the two objective functions were calculated,and the electric field and charge distribution on the surface of the insulator before and after optimisation were evaluated and compared using the simulation *** results indicated that the optimisation based on the capacitive electric field can significantly inhibit the surface charge accumulation,and the optimised insulator can significantly reduce the surface normal electric field and make the distribution of the tangential electric field more uniform,and the maximum tangential electric field can be reduced by 10%;the optimisation based on resistive electric field can achieve similar results,but requires more computational *** on the results,the‘anti-charge’basin insulator structure suitable for the DC field was given.

关键词： insulator artificial charge

Modulation of charge in C_(9)N_(4) monolayer for a highcapacity hydrogen storage as a switchable strategy

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Frontiers of physics 2024年第4期19卷 47-55页

作者： Lin ju junxian Liu Minghui Wang Shenbo Yang Shuli Liu School of Physics and Electric Engineering Anyang Normal UniversityAnyang 455000China School of Mechanical Medical and Process EngineeringQueensland University of TechnologyBrisbane QLD 4001Australia Hongzhiwei Technology(Shanghai)Co.Ltd. 1599 Xinjinqiao RoadPudongShanghai 201206China

Developing advanced hydrogen storage materials with high capacity and efficient reversibility is a crucial aspect for utilizing hydrogen source as a promising alternate to fossil *** this paper,we have systematically investigated the hydrogen storage properties of neutral and negatively charged C_(9)N_(4) monolayer based on density functional theory(DFT).Our foundings indicate that injecting additional electrons into the adsorbent significantly boosts the adsorption capacity of C_(9)N_(4) monolayer to H2 *** gravimetric density of negatively charged C_(9)N_(4) monolayer can reach up to 10.80 wt% when fully covered with *** other hydrogen storage methods,the storage and release processes happen automatically upon introducing or removing extra ***,these operations can be easily adjusted through activating or deactivating the charging *** a result,the method is easily reversible and has tunable kinetics without requiring particular ***,C_(9)N_(4) is proved to be a suitable candidate for efficient electron injection/release due to its well electrical *** work can serve as a valuable guide in the quest for a novel category of materials for hydrogen storage with high capacity.

关键词： hydrogen storage C_(9)N_(4)monolayer charge modulation density functional theory

Construction of a small-caliber tissue-engineered blood vessel using icariin-loaded β-cyclodextrin sulfate for in situ anticoagulation and endothelialization

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Science China(Life Sciences) 2018年第10期61卷 1178-1188页

作者： Jingyuan Yang Keyu Wei Yeqin Wang Yanzhao Li Ning Ding Da Huo Tianran Wang Guanyuan Yang Mingcan Yang tan ju Wen Zeng Chuhong Zhu Department of Anatomy State Key Laboratory of Trauma Burn and Combined Injury National & Regional Engineering Laboratory of Tissue Engineering State and Local Joint Engineering Laboratory for Vascular Implants Key Lab for Biomechanics and Tissue Engineering of Chongqing Third Military Medical University

The rapid endothelialization of tissue-engineered blood vessels(TEBVs) can effectively prevent thrombosis and inhibit intimal hyperplasia. The traditional Chinese medicine ingredient icariin is highly promising for the treatment of cardiovascular diseases.β-cyclodextrin sulfate is a type of hollow molecule that has good biocompatibility and anticoagulation properties and exhibits a sustained release of icariin. We studied whether icariin-loaded β-cyclodextrin sulfate can promote the endothelialization of TEBVs. The experimental results showed that icariin could significantly promote the proliferation and migration of endothelial progenitor cells; at the same time, icariin could promote the migration of rat vascular endothelial cells(RAVECs). Subsequently,we used an electrostatic force to modify the surface of the TEBVs with icariin-loaded β-cyclodextrin sulfate, and these vessels were implanted into the rat common carotid artery. After 3 months, micro-CT results showed that the TEBVs modified using icariin-loaded β-cyclodextrin sulfate had a greater patency rate. Scanning electron microscopy(SEM) and CD31 immunofluorescence results showed a better degree of endothelialization. Taken together, icariin-loaded β-cyclodextrin sulfate can achieve anticoagulation and rapid endothelialization of TEBVs to ensure their long-term patency.

关键词：硫酸盐装载容器织物设计小口径扫描电子显微镜繁体中文

镉胁迫对2种酸性土壤地肤生长及其修复镉能力的影响

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中国环境科学 2023年第5期43卷 2423-2433页

作者：杨海君郭佳源谭菊谭璐朱姝吴亮张皓牛鸿宇王凡湖南农业大学资源环境学院湖南长沙410128 湖南省长沙生态环境监测中心湖南长沙410001 核工业二三〇研究所湖南长沙410007 长沙环境保护职业技术学院湖南长沙410004

针对南方农田酸性土壤重金属镉(Cd)污染突出的问题,分别以初始镉(Cd)(1.253,1.553,2.153,2.753,4.253,10.253mg/kg)胁迫及pH值6.10(T处理组)、pH值5.00(TS处理组)下的样土为盆栽土壤,选取地肤为修复植物,通过温室盆栽控制实验研究Cd污... 详细信息

针对南方农田酸性土壤重金属镉(Cd)污染突出的问题,分别以初始镉(Cd)(1.253,1.553,2.153,2.753,4.253,10.253mg/kg)胁迫及pH值6.10(T处理组)、pH值5.00(TS处理组)下的样土为盆栽土壤,选取地肤为修复植物,通过温室盆栽控制实验研究Cd污染土壤中地肤的耐性以及初始土壤pH值和Cd浓度对地肤提取土壤中Cd能力的影响.结果表明,所有处理组成熟期地肤茎生物量均高于地下根系生物量;T处理组地肤的根际土、非根际土有效态Cd含量均高于TS处理组;所有处理组地肤的茎部Cd含量均高于根系(即根茎转移系数大于1),且根系和茎部的富集系数均大于1.通过对地肤种植前后土壤镉含量进行对比分析结果显示,T和TS处理组每盆地肤对Cd的去除率分别为0.84%~1.85%、0.94%~2.38%,说明地肤对酸性土镉污染具有更好的修复效果.在T处理组,当土壤Cd浓度为2.753mg/kg时,地肤对土壤Cd的去除率达到最高,为(0.62±0.16)%;在TS处理组,则是土壤Cd浓度为1.253mg/kg时的去除效果最佳,为(0.79±0.07)%.综合表明地肤对农田酸性土壤Cd污染具有较好的提取修复效果,是一种理想的目标修复植物.

关键词：镉胁迫地肤植物修复镉吸收酸性土壤

Protein Arginine Methyltransferase 1 Ablation in Motor Neurons Causes Mitochondrial Dysfunction Leading to Age-related Motor Neuron Degeneration with Muscle Loss

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Research 2024年第1期2023卷 637-649页

作者： Hyun-Kyung So Hyebeen Kim Jinwoo Lee Chang-Lim You Chae-Eun Yun Hyeon-ju Jeong Eun-ju Jin Yunju Jo Dongryeol Ryu Gyu-Un Bae Jong-Sun Kang Department of Molecular Cell Biology Sungkyunkwan University School of MedicineSuwonKorea Single Cell Network Research Center Sungkyunkwan University School of MedicineSuwonKorea Research Institute of Aging-Related Diseases AniMusCureInc.SuwonKorea Drug Information Research Institute Muscle Physiome Research CenterCollege of PharmacySookmyung Women’s UniversitySeoulKorea

Neuromuscular dysfunction is tightly associated with muscle wasting that occurs with age or due to degenerative ***,the molecular mechanisms underlying neuromuscular dysfunction are currently *** studies have proposed important roles of Protein arginine methyltransferase 1(Prmt1)in muscle stem cell function and muscle *** the current study,we set out to determine the role of Prmt1 in neuromuscular function by generating mice with motor neuron-specific ablation of Prmt1(mnKO)using *** exhibited age-related motor neuron degeneration and neuromuscular dysfunction leading to premature muscle loss and ***1 deficiency also impaired motor function recovery and muscle reinnervation after sciatic nerve *** transcriptome analysis of aged mnKO lumbar spinal cords revealed alterations in genes related to inflammation,cell death,oxidative stress,and ***,mnKO lumbar spinal cords of sciatic nerve injury model or aged mice exhibited elevated cellular stress response in motor ***,Prmt1 inhibition in motor neurons elicited mitochondrial *** findings demonstrate that Prmt1 ablation in motor neurons causes agerelated motor neuron degeneration attributing to muscle ***,Prmt1 is a potential target for the prevention or intervention of sarcopenia and neuromuscular dysfunction related to aging.

关键词： degeneration impaired prevention

DNA methylation in poultry:a review

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Journal of Animal Science and Biotechnology 2024年第2期15卷 509-518页

作者： Xing ju Zhijun Wang Danfeng Cai Semiu Folaniyi Bello Qinghua Nie State Key Laboratory for Conservation and Utilization of Subtropical Agro‑Bioresources Lingnan Guangdong Laboratory of AgricultureCollege of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdong 510642China Guangdong Provincial Key Lab of Agro‑Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics Breeding and ReproductionMinistry of AgricultureGuangzhouGuangdong 510642China College of Animal Science and Technology Zhejiang Agriculture and Forestry University666 Wusu RoadLin’an 311300China

As an important epigenetic modification,DNA methylation is involved in many biological processes such as animal cell differentiation,embryonic development,genomic imprinting and sex chromosome *** DNA methylation sequencing becomes more sophisticated,it becomes possible to use it to solve more zoological *** paper reviews the characteristics of DNA methylation,with emphasis on the research and application of DNA methylation in poultry.

关键词： CpG islands Differentially methylated genes Differentially methylated regions DNA methylation Poultry