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Leveraging ROTI map derived from Indonesian Gnss receiver network for advancing study of Equatorial Plasma Bubble in southeast/East Asia

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Earth and Planetary Physics 2025年第1期9卷 101-116页

作者： Prayitno Abadi Ihsan n.Muafiry Teguh n.Pratama Angga Y.Putra suraina Gatot H.Pramono sidik T.Wibowo Febrylian F.Chabibi Umar A.Ahmad Wildan P.Tresna Asnawi Research Center for Climate and Atmosphere Indonesian National Research and Innovation Agency(BRIN)BandungIndonesia school of Electrical Engineering Telkom UniversityBandungIndonesia Directorate of Laboratory Management Facilities and science and Technology Park Indonesian National Research and Innovation Agency(BRIN)PontianakIndonesia Geophysics Laboratory Master Program in PhysicsUniversitas Gadjah Mada(UGM)YogyakartaIndonesia Research Center for space Indonesian National Research and Innovation Agency(BRIN)BandungIndonesia Indonesian Geospatial Information Agency(BIG) JakartaIndonesia Research Center for Photonics Indonesian National Research and Innovation Agency(BRIN)Tangerang SelatanIndonesia Department of Earth and Planetary sciences Hokkaido UniversitySapporoJapan

This paper highlights the crucial role of Indonesia’s Gnss receiver network in advancing Equatorial Plasma Bubble(EPB)studies in southeast and East Asia,as ionospheric irregularities within EPB can disrupt Gnss signals and degrade positioning *** by the Indonesian Geospatial Information Agency(BIG),the Indonesia Continuously Operating Reference station(Ina-CORs)network comprises over 300 Gnss receivers spanning equatorial to southern low-latitude ***-CORs is uniquely situated to monitor EPB generation,zonal drift,and dissipation across southeast *** provide a practical tool for EPB research,by sharing two-dimensional rate of Total Electron Content(TEC)change index(ROTI)derived from this *** generate ROTI maps with a 10-minute resolution,and samples from May 2024 are publicly available for further scientific *** preliminary findings from the ROTI maps of Ina-CORs are ***,the Ina-CORs ROTI maps reveal that the irregularities within a broader EPB structure persist longer,increasing the potential for these irregularities to migrate farther ***,we demonstrate that combined ROTI maps from Ina-CORs and Gnss receivers in East Asia and Australia can be used to monitor the development of ionospheric irregularities in southeast and East *** have demonstrated the combined ROTI maps to capture the development of ionospheric irregularities in the southeast/East Asian sector during the G5 Geomagnetic storm on May 11,*** observed simultaneous ionospheric irregularities in Japan and Australia,respectively propagating northwestward and southwestward,before midnight,whereas southeast Asia’s equatorial and low-latitude regions exhibited irregularities *** sharing ROTI maps from Indonesia and integrating them with regional Gnss networks,researchers can conduct comprehensive EPB studies,enhancing the understanding of EPB behavior across southeast and East Asia and contributing significantly to ionosphe

关键词： Equatorial Plasma Bubble(EPB) Gnss receivers’network Indonesia Continuously Operating Reference station(Ina-CORs) ionospheric map Rate of TEC change index(ROTI)map

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Vessel density and En-face segmentation of optical coherence tomography angiography to analyse corneal vascularisation in an animal model

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Eye and Vision 2019年第1期6卷 6-16页

作者： kavya Devarajan Wen Di Lee Hon shing Ong nyein C.Lwin Jacqueline Chua Leopold schmetterer Jodhbir s.Mehta Marcus Ang singapore Eye Research Institute SingaporeSingapore singapore national Eye Center SingaporeSingapore Eye-ACP Duke-NUS Graduate Medical SchoolSingaporeSingapore Department of Clinical Pharmacology Medical University of ViennaViennaAustria Center for Medical Physics and Biomedical Engineering Medical University of ViennaViennaAustria nanyang Technological University SingaporeSingapore

Background:Optical coherence tomography angiography(OCTA)is a novel non-invasive angiography technology that has recently been extensively studied for its utility in anterior segment *** this study,we compared a split-spectrum amplitude decorrelation angiography(ssADA)OCTA and an optical micro-angiography(OMAG sD)OCTA system to current angiographic technique,indocyanine green angiography(ICGA),to assess corneal vascularisation in an animal ***:We imaged 16 rabbits,(one eye per animal)with corneal vascularisation using ssADA OCTA(AngioVue;Optovue Inc.,UsA),OMAG OCTA(Angioscan;Rs-3000 nidek ***.,Japan)and ICGA in the same region of interest of the cornea at successive *** then analysed all scanned images for vessel density measurements and used paired t-tests and Bland-Altman plots to examine for significant *** en-face segmentation images from each of the OCTA scans were also extracted and were matched at every 50μm segmentation to be compared for vessel density at the respective ***:Bland-Altman plots revealed a good agreement between all three imaging techniques(P>0.05)for all vessel density measurements computed,and the ranges of 95%limit of agreement were acceptable from a clinical *** significant difference was reported,with ICGA(μ=16.52±8.94%)being more comparable to the OMAG OCTA(μ=16.23±9.51%;p=0.50)than the ssADA OCTA(μ=17.09±7.34%;p=0.33)***,a good correlation value(r>0.9)was obtained when comparing the vessel density measurements of the en-face segmentations between the OCTA ***:Comparable vessel density quantification between the two OCTA systems,and with ICGA was *** analysis of the vasculature at different depths showed varied performance in the two OCTA systems relative to each *** implications of the study may help to aid in the development of better OCTA algorithms for the anterior segment and its use in clinical translational research.

关键词： OCTA Corneal vascularisation Optical micro angiography split-spectrum amplitude decorrelation angiography Vessel density Anterior segment En-face OCTA

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Impact of Zika virus non-structural protein mutations on hippocampal damage

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neural Regeneration Research 2025年第8期20卷 2307-2308页

作者： Larissa M.G.Cassiano Roney s.Coimbra neurogenômica/Imunopatologia Instituto RenéRachouFiocruzBelo HorizonteBrazil Departamento de Bioquímica e Imunologia Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil

The Zika virus(ZIKV),a member of the Flaviviridae family,attracted worldwide attention for its connection to severe neurological effects,notably microcephaly in newborns,first reported during the 2015 epidemic in ***,its impact goes beyond fetal and neonatal abnormalities,also affecting the central nervous system(Cns)in both children and adults,leading to enduring cognitive and behavioral impairments.

关键词： damage fetal neonatal

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The influence of Landau quantization on the propagation of solitary structures in collisional plasmas

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Communications in Theoretical Physics 2020年第8期72卷 148-153页

作者： s Hussain n Akhtar Theoretical Physics Division(TPD) PINSTECHPO NiloreIslamabad 44000Pakistan

In this work, we study damped ion acoustic solitary wave structures in magnetized dense plasmas. The collisional effects of ions with electrons and neutrals are considered. The trapping effects of electrons and Landau quantization are included in the plasma model under consideration. We assume that magnetic field is quantized such that the condition■ is satisfied. We have derived the damped Korteweg–de Vries(dKdV) equation by using small amplitude reductive perturbation technique. The time-dependent analytical and numerical solutions of the dKdV equation are presented. For numerical solutions we apply a two level finite difference scheme with the help of the Runge Kutta method. The effects of variations of different plasma parameters on the propagation characteristics of damped solitary structures in the presence of collisions are discussed.

关键词： soliton collisional plasmas finite difference method reductive perturbation method

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nonlinear parametric interactions in ion-implanted semiconductor plasmas having strain-dependent dielectric constants

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Chinese Physics B 2017年第1期26卷 304-309页

作者： n Yadav s Ghosh P s Malviya school of studies in Physics Vikram University Ujjain 465010 India Department of Physics Govt. J.N.S. Post Graduate College Shujalpur 465333 India

We report nonlinear parametric interactions using a hydrodynamic model of ion-implanted semiconductor plasmas having strain-dependent dielectric constants（sDDC）. High-dielectric-constant materials are technologically important because of their nonlinear properties. We find that the third-order susceptibility varies in the range 10^-14--10^-12m^2·V^-2 for ion-implanted semiconductor plasmas, which is in good agreement with previous results. It is found that the presence of sDDC in ion-implanted semiconductor plasma modifies the characteristic properties of the material.

关键词： nonlinear parametric interactions ion-implanted semiconductor plasmas strain-dependent dielectric constant

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Blue emitting exciplex for yellow and white organic light‑emitting diodes

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Frontiers of Optoelectronics 2023年第4期16卷 191-203页

作者： kavya Rajeev C.K.Vipin Anjali K.sajeev Atul shukla sarah K.M.McGregor shih‑Chun Lo Ebinazar B.namdas K.n.narayanan Unni Centre for sustainable Energy Technologies CSIR-National Institute for Interdisciplinary Science and TechnologyThiruvananthapuram 695019India Academy of scientifc and Innovative Research(AcsIR) Ghaziabad 201002India Centre for Organic Photonics&Electronics The University of QueenslandBrisbaneQLD 4072Australia school of Mathematics and Physics The University of QueenslandBrisbaneQLD 4072Australia school of Chemistry and Molecular Biosciences The University of QueenslandBrisbaneQLD 4072Australia

White organic light-emitting diodes(WOLEDs)have several desirable features,but their commercialization is hindered by the poor stability of blue light emitters and high production costs due to complicated device ***,we investigate a standard blue emitting hole transporting material(HTM)n,n'-bis(naphthalen-1-yl)-n,n'-bis(phenyl)benzidine(nPB)and its exciplex emission upon combining with a suitable electron transporting material(ETM),3-(biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole(TAZ).Blue and yellow OLEDs with simple device structures are developed by using a blend layer,nPB:TAZ,as a blue emitter as well as a host for yellow phosphorescent dopant iridium(III)bis(4-phenylthieno[3,2-c]pyridinato-n,C2')acetylacetonate(PO-01).strategic device design then exploits the ambipolar charge transport properties of tetracene as a spacer layer to connect these blue and yellow emitting *** tetracene-linked device demonstrates more promising results compared to those using a conventional charge generation layer(CGL).Judicious choice of the spacer prevents exciton difusion from the blue emitter unit,yet facilitates charge carrier transport to the yellow emitter unit to enable additional exciplex *** complementary behavior of the spacer improves the blue emission properties concomitantly yielding reasonable yellow *** overall white light emission properties are enhanced,achieving CIE coordinates(0.36,0.39)and color temperature(4643 K)similar to *** intermolecular exciplex emission in OLEDs simplifes the device architecture via its dual functionality as a host and as an emitter.

关键词： Organic light-emitting diodes Dual functional exciplex spacers Device design strategy Blue exciplex Yellow OLEDs White light emission

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Endoscopic treatment of biliopancreatic pathology in patients with Whipple's pancreaticoduodenectomy surgical variants: Lessons learned from single-balloon enteroscopy-assisted ERCP

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Hepatobiliary & Pancreatic Diseases International 2024年第5期23卷 509-514页

作者： Rodrigo Garcés-Durán Laurent Monino Pierre H Deprez Hubert Piessevaux Tom G Moreels Department of Gastroenterology and Hepatology Universitécatholique de LouvainCliniques Universitaires Saint-LucAvenue Hippocrates 101200 BrusselsBelgium

Background: Endoscopic treatment of biliopancreatic pathology is challenging due to surgically altered anatomy after Whipple's pancreaticoduodenectomy. This study aimed to evaluate the feasibility and safety of single-balloon enteroscopy-assisted endoscopic retrograde cholangiopancreatography(sBE-ERCP) to treat biliopancreatic pathology in patients with Whipple's pancreaticoduodenectomy surgical variants. Methods: We retrospectively analyzed 106 sBE-ERCP procedures in 46 patients with Whipple's variants. Technical and clinical success rates and adverse events were evaluated. Results: Biliary sBE-ERCP was performed in 34 patients and pancreatic sBE-ERCP in 17, including 5 with both indications. From a total of 106 sBE-ERCP procedures, 76 were biliary indication with technical success rate of 68/76(90%) procedures and clinical success rate of 30/34(88%) patients. Mild adverse event rate was 8/76(11%), without serious adverse events. From a total of 106 sBE-ERCP procedures, 30 were pancreatic indication with technical success rate of 24/30(80%) procedures( P = 0.194 vs. biliary sBEERCP) and clinical success rate of 11/17(65%) patients( P = 0.016 vs. biliary sBE-ERCP). Mild adverse event rate was 6/30(20%)( P = 0.194 vs. biliary sBE-ERCP), without serious adverse events. After sBE-ERCP failure, endoscopic ultrasound-guided drainage, percutaneous drainage and redo surgery were alternative therapeutic options. Conclusions: Biliopancreatic pathology after Whipple's pancreaticoduodenectomy variants can be treated using sBE-ERCP without serious adverse events. Technical and clinical success rates are high for biliary indications, whereas clinical success rate of pancreatic indications is significantly lower. sBE-ERCP can be considered as first-line treatment option in this patient group with surgically altered anatomy.

关键词： Enteroscopy Endoscopic retrograde cholangiopancreatography Pancreaticoduodenectomy surgically altered anatomy Whipple’s procedure

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Chemoselective synthesis of δ-lactones via benzyl radical cyclization utilizing K_2s_2O_8-CuCl_2

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Chinese Chemical Letters 2008年第12期19卷 1431-1434页

作者： n.O.Mahmoodi K.Tabatabaeian M.Kosari s.Zarrabi Department of Chemistry Faculty of ScienceUniversity of GuilanRashtP.O.Box 1914Iran

Direct chemoselective oxidation of δ-lactones via highly stable benzyl radical cyclization is reported. The one-pot conversion of premade substituted 5-aryl pentanoic acid and 8-benzyl-1-naphthoic acid in the presence of K2s2Os--CuCl2 results to the δ-lactones in moderate to good yields. The advantages of this methodology is using water as a solvent and utilizing available starting materials.

关键词： δ-Lactones Benzyl radical Chemoselective oxidation K2s2O8-CuCl2

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Baeyer-Villiger oxidation of cyclic ketones utilizing potassium peroxydisulfate(K_2s_2O_8) or sodium perborate(naBO_3) in acidic media

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Chinese Chemical Letters 2009年第12期20卷 1400-1404页

作者： s.Zarrabi n.O.Mahmoodi K.Tabatabaeian M.A.Zanjanchi Department of Chemistry Faculty of ScienceUniversity of GuilanRashtP.O.Box 1914Iran

The efficient, green, facile, mild and straightforward conversion procedure for the oxidation of cyclic ketones to lactones at room temperature utilizing potassium peroxydisulfate （K2s2O8） in acidic media is satisfactory to high yields without using traditional chlorinated solvents is reported. This oxidative reagent is cheap and friendly environmental procedure for industrial purposes than use of organic peracids.

关键词： Baeyer-Villiger oxidation Cyclic ketones Potassium peroxydisulfate (K2s208) Acidic media sodium perborate (naBO3)

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Dynamic and electrical responses of a curved sandwich beam with glass reinforced laminate layers and a pliable core in the presence of a piezoelectric layer under low-velocity impact

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Applied Mathematics and Mechanics(English Edition) 2024年第1期45卷 155-178页

作者： n.sHAHVEIsI s.FELI Department of Mechanical Engineering Razi UniversityKermanshah ***Iran

The dynamic responses and generated voltage in a curved sandwich beam with glass reinforced laminate(GRL)layers and a pliable core in the presence of a piezoelectric layer under low-velocity impact(LVI)are *** current study aims to carry out a dynamic analysis on the sandwich beam when the impactor hits the top face sheet with an initial *** the layer analysis,the high-order shear deformation theory(HsDT)and Frostig's second model for the displacement fields of the core layer are *** classical non-adhesive elastic contact theory and Hunter's principle are used to calculate the dynamic responses in terms of *** order to validate the analytical method,the outcomes of the current investigation are compared with those gained by the experimental tests carried out by other researchers for a rectangular composite plate subject to the *** element(FE)simulations are conducted by means of the ABAQUs *** effects of the parameters such as foam modulus,layer material,fiber angle,impactor mass,and its velocity on the generated voltage are reviewed.

关键词： analytical model piezoelectric layer curved sandwich beam glass reinforced laminate(GRL) pliable core low-velocity impact(LVI) classical non-adhesive elastic contact theory

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