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Jacobsen syndrome with bilateral periventricular white matter lesions

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World Journal of Pediatrics 2022年第2期18卷 142-143页

作者： Hyun-Joo Lee Hae-ln Lee ji-hoon na Young-Mock Lee Department of Pediatrics Yonsei University College of MedicineSeoulKorea Department of Pediatrics Gangnam Severance HospitalYonsei University College of Medicine21Eonju-roGangnam-guSeoul 06273Korea

A 2-month-old girl presented facial dimorphism,including frontal bossing,hypertelorism,a broad nasal bridge,low-set ears,hypotonia with mild spasticity,and mild *** head circumference was 40.8 cm(75-90 percentile).The... 详细信息

关键词： white ism Jacobsen

Rational design of MoS_(2)-based catalysts toward lignin hydrodeoxygenation:Interplay of structure,catalysis,and stability

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Journal of Energy Chemistry 2023年第2期77卷 601-631,I0015页

作者： Xinyong Diao na ji School of Environmental Science and Engineering Tianjin Key Laboratory of Biomass/Wastes UtilizationTianjin UniversityTianjin 300350China

The MoS_(2)-based materials are a vital class of heterogeneous catalysts for the hydrodeoxygenation of lignin and its model compounds to produce value-added chemicals especially because of their unique selectivity to *** rational design of MoS_(2)-based catalyst greatly depends on the comprehensive understanding of its structure-activity ***,an intensive summary and critical analysis are still scarce to *** this review,we attempt to provide an in-depth understanding of the interplay of structure,catalysis,and stability of MoS_(2)-based catalysts for lignin *** recognition of intrinsic active sites on MoS_(2) structure was firstly discussed,followed by the illustration of MoS_(2)-catalyzed hydrodeoxygenation structural ***,based on the studies on the MoS_(2)-catalyzed lignin model compounds hydrodeoxygenation,the current active site modification strategies including structural modification of monometallic MoS_(2) catalysts and collaborative modification were summarized and emphatically discussed,which aims to elucidate the structure-activity relationship at the *** deactivation mechanism and stabilization strategies were also illustrated to provide instructive suggestion for the rational design of efficient and stable MoS_(2)-based ***,the real lignin depolymerization over MoS_(2)-based catalysts was summarized to point out the advantages and *** review attempts to highlight the remaining challenges and provide some perspectives for the future development of MoS_(2)-based catalysts for lignin hydrodeoxygenation.

关键词： Lignin hydrodeoxygenation MoS_(2)-based catalysts Structure-activity relationship Modification strategies Deactivation mechanism

Conditional Symmetries and Solutions to a Class of Nonlinear Diffusion-Convection Equations

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Communications in Theoretical Physics 2006年第4X期46卷 668-674页

作者： ji Li-na Center for Nonlinear Studies Northwest University Xi'an 710069 China Department of Mathematics Northwest University Xi'an 710069 China Information and Management Science College Henan Agricultural University Zhengzhou 450002 China

The present paper discusses a class of nonlinear diffusion-convection equations with source. The method that we use is the conditional symmetry method. It is shown that the equation admits certain conditional symmetri... 详细信息

关键词： symmetry nonlinear diffusion-convection equation conditional symmetry exact solution

Utilizing 3,4-ethylenedioxythiophene(EDOT)-bridged non-fullerene acceptors for efficient organic solar cells

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Journal of Energy Chemistry 2022年第2期31卷 194-204页

作者： Sung Jae Jeon Young hoon Kim Ie na Kim nam Gyu Yang ji Hee Yun Doo Kyung Moon nano and Information Materials(NIMs)Laboratory Department of Chemical EngineeringKonkuk University120 Neungdong-ro Gwangjin-guSeoul 05029South Korea Department of Academy of Applied Science and Technology Konkuk University120 Neungdong-ro Gwangjin-guSeoul 05029South Korea

A rational design of efficient low-band-gap non-fullerene acceptors(NFAs)for high-performance organic solar cells(OSCs)remains challenging;the main constraint being the decrease in the energy level of the lowest unoccupied molecular orbitals(LUMOs)as the bandgap of A-D-A-type NFAs ***,the short current density(J_(sc))and open-circuit voltage(V_(oc))result in a trade-off relationship,making it difficult to obtain efficient ***,three NFAs(IFL-ED-4 F,IDT-ED-4 F,and IDTT-ED-2 F)were synthesized to address the above-mentioned issue by introducing 3,4-ethylenedioxythiophene(EDOT)as aπ-*** NFAs exhibit relatively low bandgaps(1.67,1.42,and 1.49 eV,respectively)and upshifted LUMO levels(-3.88,-3.84,and-3.81 eV,respectively)compared with most reported low-band-gap ***,the photovoltaic devices based on IDT-ED-4 F blended with a PBDB-T donor polymer showed the best power conversion efficiency(PCE)of 10.4%with a high J_(sc) of 22.1 mA cm^(-2) and Voc of 0.884 V among the examined *** contrast,IDTT-ED-4 F,which was designed with an asymmetric structure of the D-p-A type,showed the lowest efficiency of 1.5%owing to the poor morphology and charge transport properties of the binary ***,when this was introduced as the third component of the PM6:BTP-BO-4 Cl,complementary absorption and cascade energy-level alignment between the two substances could be ***,the IDTT-ED-4 F-based ternary blend device not only improved the Jscand Voc,but also achieved a PCE of 15.2%,which is approximately 5.3%higher than that of the reference device with a minimized energy loss of 0.488 *** addition,the universality of IDTT-ED-2 F as a third component was effectively demonstrated in other photoactive systems,specifically,PM6:BTPe C9 and PTB7-Th:IEICO-4 *** work facilitates a better understanding of the structure–property relationship for utilizing efficient EDOT-bridged NFAs in high-performance OSC applications.

关键词： Non-fullerene acceptor 3,4-ethylenedioxythiophene Organic solar cell π-bridge π-spacer

Reliable beacon transmission based MAC protocol for LR-WPANs over WLAN interferences

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第6期15卷 470-481页

作者： ji-hoon PARK Byung-Seo KIM ITO Business Division Nongshim Data System Department of Computer and Information Communications Engineering Hongik University

The use of IEEE 802.15.4 standard based application systems has been rapidly increasing, for example, in medical services, sensor networks, public safety systems, and home automation systems. However, issues arise from the fact that IEEE 802.15.4 standard based low rate wireless personal area networks(LR-WPANs) use the same frequency bands as wireless local area networks(WLANs), and they interfere with each other. Based on past research on this issue, the interference has a more serious impact on LR-WPANs' performance than on WLANs' performance. In this paper we propose a method to improve LR-WPANs' performance while coexisting with WLANs, which is called the reliable beacon transmission based medium access control(MAC) protocol. Since the reliability of a beacon frame is important, in this method, only the beacon frame is transmitted in interference-free channels, and the data packets are transmitted in interfered channels instead of abandoning the channels altogether. This method increases the reliability of beacon frames as well as overall channel utilizations. The effectiveness of the proposed method was evaluated through extensive simulations, and this paper proves that this method improves the performance of IEEE 802.15.4 based wireless sensor networks(WSNs) over WLANs' interferences.

关键词： Low rate wireless personal area network(LR-WPAN) Interference Wireless local area network(WLAN) Beacon

Moments of Continuous-state Branching Processes with or Without Immigration

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Acta Mathematicae Applicatae Sinica 2020年第2期36卷 361-373页

作者： Li-na ji Zeng-hu LI Department of Mathematics Southern University of Science and TechnologyShenzhen 518055China School of Mathematical Sciences Beijing Normal UniversityBeijing 100875China

For a positive continuous function f satisfying some standard conditions,we study the f-moments of continuous-state branching processes with or without *** main results give criteria for the existence of the *** chara... 详细信息

关键词： branching process continuous-state immigration moments stochastic equation

Novel adaptive laser scanning sensor for reverse engineering measurement

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仪器仪表学报 2007年第7期28卷 1164-1169页

作者： Zhao ji MaZi Lin na Zhu Quanmin Automation Research Center Dalian Maritime University Liaoning 116026 China Faculty of Computing Engineering and Mathematical Science University of the West of England Frenchey Campus Coldharbour Lane Bristol BS161Q Y UK

In this paper,a series of new techniques are used to optimize typical laser scanning *** integrated prototype is compared with traditional approach to demonstrate the much improved *** the research and development,camera calibration is achieved by extracting characteristic points of the laser plane,so that the calibra- tion efficiency is improved *** feedback control of its intensity,the laser is automatically adjusted for different material.A modified algorithm is presented to improve the accuracy of laser stripe *** fusion of data extracted from left and right camera is completed with re-sampling *** scanner is integrated with a robot arm and some other machinery for on-line measurement and inspection,which provides a flexible measurement tool for reverse engineering.

关键词：逆向工程激光扫描传感器激光强度控制照相机校准

Oxidative stress and inflammatory signaling in cerulein pancreatitis

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World Journal of Gastroenterology 2014年第46期20卷 17324-17329页

作者： ji hoon Yu Hyeyoung Kim New Drug Development Center Daegu-Gyeongbuk Medical Innovation FoundationDaegu 701-310South Korea Department of Food and Nutrition Brain Korea 21 PLUS ProjectCollege of Human EcologyYonsei UniversitySeoul 120-749South Korea

Oxidative stress is considered to be an important regulator of the pathogenesis of acute pancreatitis. Reactive oxygen species (ROS) regulate the activation of inflammatory cascades, the recruitment of inflammatory cells and tissue damage in acute pancreatitis. A hallmark of the inflammatory response in pancreatitis is the induction of cytokine expression, which is regulated by a number of signaling molecules including oxidant-sensitive transcription factors such as nuclear factor-κB (NF-κB) and activator protein-1 (AP-1), signal transducer and activator of transcription 3 (STAT3), and mitogen-activated protein kinases (MAPKs). Cross-talk between ROS and pro-inflammatory cytokines is mediated by NF-κB, AP-1, STAT3, and MAPKs; this crosstalk amplifies the inflammatory cascade in acute pancreatitis. Therapeutic studies have shown that antioxidants and natural compounds can have beneficial effects for patients with pancreatitis and can also influence the expression of proinflammatory cytokines in cerulein-induced pancreatitis. Since oxidative stress may activate inflammatory signaling pathways and contribute to the development of pancreatitis, antioxidant therapy may alleviate the symptoms or prevent the development of pancreatitis. Since chronic administration of high doses of antioxidants may have deleterious effects, dosage levels and duration of antioxidant treatment should be carefully determined.

关键词： Reactive oxygen species Inflammatory signaling Cerulein pancreatitis

Symmetry Reduction and Cauchy Problems for a Class of Fourth-Order Evolution Equations

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Communications in Theoretical Physics 2008年第7期50卷 31-38页

作者： LI ji-na ZHANG Shun-Li Center for Nonlinear Studies Department of Mathematics Northwest University Xi＇an 710069 China Center of Nonlinear Science Ningbo University Ningbo 315211 China

We exploit higher-order conditional symmetry to reduce initial-value problems for evolution equations toCauchy problems for systems of ordinary differential equations (ODEs).We classify a class of fourth-order evolutionequations which admit certain higher-order generalized conditional symmetries (GCSs) and give some examples to showthe main reduction *** reductions cannot be derived within the framework of the standard Lie approach,which hints that the technique presented here is something essential for the dimensional reduction of evolu tion equations.

关键词： fourth-order evolution equation generalized conditional symmetry Cauchy problem