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Open Journal of Applied Sciences 2025年第1期15卷 42-52页

作者： Moussa Ouedraogo Nazé Yacouba traore Alain Diasso raguilignaba sam François Zougmore Laboratoire de Matriaux dHliophysique et Environnement (LaMHE) Dpartement de Physique UFR/ST Universit Nazi Boni Bobo Dioulasso Burkina Faso Laboratoire de Matriaux et Environnement Dpartement de Physique UFR/SEA Universit Joseph Ki-Zerbo Ouagadougou Burkina Faso

this study examines the influence of magnetic field and temperature on the transient voltage of a polycrystalline silicon radial junction solar cell in a dynamic regime under multispectral illumination. radial junction solar cells represent a major advancement in photovoltaic technologies, as they optimize light absorption and charge collection efficiency. the focus is on the impact of the magnetic field and temperature on the decay of transient voltage, which provides crucial information on recombination processes and the lifetime of minority carriers. the results reveal that the magnetic field tends to increase the transient voltage by directly affecting the transient electron density. Indeed, for B > 7 × 10−5 t, the magnetic field prolongs the relaxation time by increasing the transient voltage amplitude. Additionally, rising temperatures accelerate (ranging from 290 K to 450 K) recombination processes, thereby reducing the transient voltage, although this effect is moderated by the presence of a magnetic field. the study highlights the complex interaction between magnetic field and temperature, with significant impacts on the transient behaviour.

关键词： Electrons radial Junction transient Voltage Magnetic Field Operating temperature

Influence of La3+ ion in the yttria matrix in improving the microhardness of infrared transparent nano LaxY2-xO3 sintered via hybrid heating

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Journal of Advanced Ceramics 2017年第3期6卷 240-250页

作者： Jijimon K. tHOMAS Mathew C. t. Jacob KOSHY sam SOLOMON Electronic Materials research Laboratory Department of Physics Mar Ivanios College Thiruvananthapuram 695015 Kerala India

In the present work, hybrid sintering technique which couples the resistive heating and microwave heating is employed to sinter infrared transparent La0.15Y1.85O3 to 99.2% of the theoretical density for the first time to the best of our knowledge. the presence of La3+ in the yttria matrix improves the hardness properties to a greater extent without affecting the transmittance properties, but there is a deterioration in the thermal properties of the sample. So we have limited our studies to La0.15Y1.85O3 which shows better optical, thermal, and hardness properties. the pellets fabricated from the ultra-fine nano powder with average particle size of ~12 nm synthesized by combustion technique and sintered at 1430 ℃ with an average grain size of 0.22 μm show ~80.1% transmittance in the UV–visible region and 81% in mid infrared region. For a comparative study of the optical, mechanical, and thermal properties, two other variants of sintering strategies namely conventional sintering and microwave sintering are also employed. A comprehensive analysis on the hardness reveals that the hardness of the pellets sintered via hybrid heating is 9.73 GPa and is superior to the pellets sintered using the other two techniques. the thermal conductivity of the sample is also analyzed in detail. the results clearly indicate that the La0.15Y1.85O3 ultra-fine nano powder synthesised by the single-step combustion method and sintered via microwave hybrid heating shows better transmittance properties without compromising the mechanical properties, and can be used very effectively for the fabrication of infrared transparent windows and domes.

关键词： La3+ concentration microhardness hybrid sintering infrared transparent ceramics thermal conductivity

Production and testing of Biogas Using Cow Dung,Jatropha and Iron Filins

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Journal of Bioresources and Bioproducts 2019年第3期4卷 9-14页

作者： A S ADEKUNLE S E IBItOYE P O OMONIYI L J JILANtIKIrI C V sam-OBU t YAHAYA Department of Mechanical Engineering University of IlorinIlorinNigeria Department of Biomedical Engineering University of IlorinIlorinNigeria Department of Mechanical Engineering Federal PolytechnicOffaNigeria Department of Material and Metallurgical Engineering University of IlorinIlorinNigeria

Biogas production was investigated in this study as an alternative to wood as fuel using slurries of cow dung(t1),jatropha fruit exocarp(t2),cattle dung and jatropha fruit exocarp(t3)and cow dung,jatropha fruit exocarp with 10 g of iron filings(t4).the 1000 mL of slurry which included 50 mL of inoculum that compensated for the dead or weak micro-organism was made for each *** the end of five weeks,the volume of biogas collected from the samples t1,t2,t3,and t4 when added up,gave 77,154,145 and 586 mL,*** sample mixture of cow dung,jatropha fruit exocarp,and iron filings(t4),gave the highest yield of biogas production with an average weekly production of 59 mL/kg for four weeks and on the fifth week about six times emission of biogas was *** production rate of the biogas was rapid after the gestation period and the t4 emerged as the most substantial emission of all the samples producing 350 mL/kg on the fifth week.

关键词： anaerobic digestion bacteria biodegradable biogas

Hemispheric Specialization of the Primate Inferior Parietal Lobule

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Neuroscience Bulletin 2022年第3期38卷 334-336页

作者： sam Vickery Simon B Eickhoff Patrick Friedrich Institute of Neuroscience and Medicine Brain&Behaviour(INM-7)Research Centre Jülich52428JülichGermany Institute of Systems Neuroscience Medical FacultyHeinrich-Heine University Düsseldorf40225DüsseldorfGermany

Hemispheric asymmetries can be seen as one of the evolutionary adaptations that allowed the human brain to muster more complex cognitive processes than other *** this vein,the study published by Cheng et al.[1]presents a pivotal investigation of both the regional and connectional asymmetries within the inferior parietal lobule(IPL)in human,chimpanzee,and *** investigating 4 sub-divisions of the IPL across the three species,Cheng and colleagues showed that the macroanatomical and connectional architecture of the IPL became more asymmetric throughout the primate *** macaques show little to no structural asymmetries,chimpanzees display a more asymmetric architecture but with both leftward and rightward asymmetries in various *** contrast,the human IPL displayed the highest number of asymmetries among the three species with a clear tendency towards more *** evolutionary trend towards a more lateralized organization of the IPL may have accompanied an improved command of tool-use,stronger forelimb asymmetries,and the increasing complexity of communicative behavior.

关键词： asymmetric erior allowed

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

A Floating Island treatment System for the removal of Phosphorus from Surface Waters

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Engineering 2018年第5期4卷 597-609页

作者： Mark t. Brown treavor Boyer r.J. Sindelar sam Arden Amar Persaud Sherry Brandt-Williams Department of Environmental Engineering Sciences University of Florida Gainesville FL 32611 USA St. Johns river Water Management District Palatka FL 32177 USA

the goal of this project was to design, build, and test a pilot-scale floating modular treatment system for total phosphorus （tP） removal from nutrient-impaired lakes in central Florida, USA. the treatment sys-tem consisted of biological and physical-chemical treatment modules. First, investigations of prospective biological and physical-chemical treatment processes in mesocosms and in bench-scale experiments were conducted. thirteen different mesocosms were constructed with a variety of substrates and combi-nations of macrophytes and tested for tP and orthophosphate （PO4-^3） removal efficiencies and potential areal removal rates. Bench-scale jar tests and column tests of seven types of absorptive media in addition to three commercial resins were conducted in order to test absorptive capacity. Once isolated process testing was complete, a floating island treatment system （FItS） was designed and deployed for eight months in a lake in central Florida. Phosphorus removal efficiencies of the mesocosm systems averaged about 40%-50%, providing an average uptake of 5.0 g.m ^2.a ^1 across all mesocosms. the best-performing mesocosms were a submerged aquatic vegetation （SAV） mesocosm and an algae scrubber （AGS）, which removed 20 and 50 mg.m ^2.d ^1, respectively, for an average removal of 5.5 and 12.0 g.m ^2.a ^1 for the SAV and AGS systems, Of the absorptive media, the best performance was alum residual （Ar）, which reduced PO4-^3 concentrations by about 75% after 5 min of contact time. Of the commercial resins tested, the PhosX resin was superior to the others, removing about 40% of phosphorus after 30 rain and 60% after 60min. Under baseline operation conditions during deployment, the FItS exhibited mean PO4-^3 removal efficiencies of 53%; using the 50th and 90th percentile of PO4-^3 removal during deployment, and the footprint of the FItS system, yielded efficiencies for the combined FItS system of 56% and 86%, respectively, and areal phosphorus removal rates between 8.9

关键词： Phosphorus removal Lake ecosystem Floating island treatment

robust adaptive neuro-fuzzy control of uncertain nonholonomic systems

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控制理论与应用（英文版） 2010年第2期8卷 125-138页

作者： Shuzhi sam GE Chee Khiang PANG tong Heng LEE Data Storage Institute A*STAR 5 Engineering Drive 1 (Off Kent Ridge Crescent NUS) Singapore 117608

In this paper, we present an adaptive neuro-fuzzy controller design for a class of uncertain nonholonomic systems in the perturbed chained form with unknown virtual control coefficients and strong drift nonlinearities. the robust adaptive neuro-fuzzy control laws are developed using state scaling and backstepping. Semiglobal uniform ultimate bound-edness of all the signals in the closed-loop are guaranteed, and the system states are proven to converge to a small neigh-borhood of zero. the control performance of the closed-loop system is guaranteed by appropriately choosing the design parameters. By using fuzzy logic approximation, the proposed control is free of control singularity problem. An adaptive control-based switching strategy is proposed to overcome the uncontrollability problem associated with x 0 (t 0 ) = 0.

关键词： Neuro-fuzzy control Nonholonomic systems Motion control

Supplementing oat hulls to the diet of suckling piglets altered their intestinal tract and colonic microbiota development

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Animal Nutrition 2023年第1期12卷 284-296页

作者： Hubèrt M.J.van Hees Koen Chiers Leo A.den Hartog theo A.t.G.van Kempen Dominiek Maes sam Millet Geert P.J.Janssens Department of Veterinary and Biosciences Ghent UniversityMerelbekeBelgium trouw Nutrition research and Development Amersfoortthe Netherlands Department of Pathology Ghent UniversityMerelbekeBelgium Animal Nutrition Wageningen University and ResearchWageningenthe Netherlands Department of Animal Science North Carolina State UniversityRaleighNCUSA Department of reproduction Obstetrics and Herd HealthGhent UniversityMerelbekeBelgium ILVO(Flanders research Institute for Agriculture Fisheries and Food)MelleBelgium

Current study evaluated the effect of a fine and coarsely ground insoluble dietary fibre source on the gastrointestinal development of suckling *** hulls(OH)were selected as a model feedstuff,rich in cellulose,lignin,and insoluble dietary *** experimental supplemental diets were formulated:a finely ground,low fibre and nutrient dense diet served as control(CON).For the 2 high fibre diets,15%heat-treated starch in CON was exchanged with OH,either finely(OH-f)or coarsely ground(OH-c).Litters of 10 primi-and multiparous sows(mean litter size 14.6±0.84)were *** a litter,experimental diets were allotted to triplets of 4 *** approximately 12 d of age,piglets’individual feed intakes were recorded 2 times per day when separated from their dam for 70 *** could suckle with their dam for the remainder of the *** d 24 and 25,from the total pool of 120 piglets,seven healthy well-eating piglets per treatment were selected for post-mortem evaluation,resulting in 14 replicates per *** of OH-c and OH-f did not impede clinical health and production performance of *** full stomach weights tended to be greater for OH-c compared to OH-f whereas CON was intermediate(P=0.083).Supplementing OH significantly increased ileal villus height and caecal dry matter concentration(Pr the colon,OH increased its length,contents weight,short-chain fatty acid concentration and reduced total bacterial count as well asγ-proteobacteria count and proportion(Pthe OH-c treatment specifically increased full gastrointestinal tract weight and caecum contents weight compared to piglets fed CON and ***,OH-c reduced colonic crypt depth when compared to OH-f(P=0.018).In conclusion,supplementing OH to a diet for suckling piglets exerted subtle developmental effects on gastrointestinal morphology and colonic microbial *** effects were largely independent from the particle size of the OH.

关键词： Oat hull Insoluble fibre Gastrointestinal development Suckling piglet

A review on Electrospinning as Versatile Supports for Diverse Nanofibers and their Applications in Environmental Sensing

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Advanced Fiber Materials 2023年第2期5卷 429-460页

作者： Jialing Song Xuanhao Lin Liang Ying Ee sam Fong Yau Li Manhong Huang College of Environmental Science and Engineering Key Laboratory of Science and Technology of Eco‑TextileMinistry of EducationDonghua UniversityShanghai 201620People’s Republic of China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092People’s Republic of China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 201620People’s Republic of China National University of Singapore Environmental research Institute T Lab Bldg5A Engineering Drive 1Singapore 117411Singapore

rapid industrialization is accompanied by the deterioration of the natural *** deepening crisis associated with the ecological environment has garnered widespread attention toward strengthening environmental monitoring and *** sensors are one of the key technologies for environmental monitoring,ultimately enabling environmental *** recent decades,micro/nanomaterials have been widely studied and applied in environmental sensing owing to their unique dimensional *** has been developed and adopted as a facile,quick,and effective technology to produce continuous micro-and nanofiber *** technology has advanced rapidly and become one of the hotspots in the field of nanomaterials *** sensors made from electrospun nanofibers possess many advantages,such as having a porous structure and high specific surface area,which effectively improve their performance in environmental ***,by introducing functional nanomaterials(carbon nanotubes,metal oxides,conjugated polymers,etc.)into electrospun fibers,synergistic effects between different materials can be utilized to improve the catalytic activity and sensitivity of the *** this review,we aimed to outline the progress of research over the past decade on electrospinning nanofibers with different morphologies and functional characteristics in environmental sensors.

关键词： Electrospinning Nanofibers Environmental sensing Functional nanomaterials

A case series of precipitous cardiac tamponade from suspected perimyocarditis in COVID-19 patients

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Journal of Geriatric Cardiology 2021年第5期18卷 403-406,I0002-I0004页

作者： William Kogler Michael Omar Naji Maaliki Shaorinkumar Patel sam Foldy Jose ruiz Department of Internal Medicine University of Florida JacksonvilleJacksonvilleFLUSA Department of Cardiology University of Florida JacksonvilleFLUSA

A 71yearold well controlled hypertensive female presented on day 4 of acute COVID19 illness with atypical chest pain and worsening exertional *** examination,heart rate was 110 beats/min,blood pressure was 125/82 mmHg and there were decreased heart sounds with visible jugular venous *** was not in respiratory distress at rest and was not requiring supplemental *** radiography showed bilateral diffuse opacities(Figure 1).transthoracic echocardiography(ttE)confirmed a moderate pericardial effusion with right ventricular systolic compression,paradoxical right ventricular septal motion,enddiastolic right atrial collapse,and a plethoric inferior vena cava(IVC)with no respiratory *** ejection fraction(EF)was 55%.Initial workup revealed mildly elevated troponin t levels of 0.14 ng/mL,NtPro BNP of 2500 pg/mL.

关键词： hypertensive distress elevated