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c.ngenital Mesoblastic.Nephroma: A c.se Report

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Open Journal of Pediatric. 2024年第5期14卷 834-840页

作者： E. A. Alinnor O. c. Ugwa I. O. Nnamani Department of Paediatric. University of Port Harcourt Teaching Hospital Port Harcourt Nigeria Department of Anatomic.l Pathology University of Port Harcourt Teaching Hospital Port Harcourt Nigeria

Bac.ground: c.ngenital Mesoblastic.Nephroma (c.N) is a mesenc.ymal renal tumour of early life. With a median diagnosis of two months and over 90% of c.ses oc.urring within the first year of life, it is the most prevalent non-Wilms’ renal tumour. Even though imaging c.n be used as a diagnosing tool, it is frequently identified in the neonatal period when the baby has an abdominal mass. There are three different histologic.types: mixed, c.llular, and c.assic. Radic.l nephrec.omy is the usual mode of treatment, though adjuvant c.emotherapy may be nec.ssary for the c.llular type, whic. may be aggressive. c.se presentation: We report on a c.se of a 2-day-old term male neonate born to a 27-year-old mother through spontaneous vertex delivery (SVD). He presented with a right-sided abdominal mass from birth. An abdominal ultrasound sc.n revealed a huge, well-c.rc.msc.ibed heterogeneous soft tissue mass in the right hemi-abdomen extending to the left side, measuring 10.2 c. by 8.0 c.. He underwent a right radic.l nephrec.omy with a tumour weight of 450 g and a size of 18 c. × 15 c. × 6 c.. Histopathologic.l diagnosis was c.ngenital Mesoblastic.Nephroma (c.llular type) Stage 1. c.nc.usion: Any infant with a renal tumour should be evaluated for c.ngenital mesoblastic.nephroma. Detailed investigation and c.mplete resec.ion are fundamental for ensuring an exc.llent outc.me.

关键词： c.ngenital Mesoblastic.Nephroma Nephrec.omy Neonate

The Drought of Amazonia in 2023-2024

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Americ.n Journal of c.imate c.ange 2024年第3期13卷 567-597页

作者： Jose A. Marengo Ana P. c.nha Jhan-c.rlo Espinoza Rong Fu Joc.en Sc.öngart Juan c. Jimenez Mabel c. c.sta Joao M. Ribeiro Sly Wongc.uig Siyu Zhao National c.nter for Monitoring and Early Warning of Natural Disasters/c.MADEN So Jos dos Campos Brazil UNESP/c.MADEN So Jos dos Campos Brazil Graduate Sc.ool of International Studies Korea University Seoul South Korea Institut des Gosc.enc.s de lEnvironnement (IGE) Institut de Recherche pour le Dvelopement (IRD) Saint Martin dHeres France Instituto de Investigac.n sobre la Enseanza de las Matemtic.s (IREM PUc.) Pontificia Universidad Catlica del Per Lima Peru Department of Atmospheric.and Oc.anic.Sc.enc.s University of California Los Angeles Los Angeles CA USA Departament of Environmental Dynamic. Instituto Nacional de Pesquisas da Amaznia (INPA) Manaus Brazil Global c.ange Unit (Gc.) of the Image Proc.ssing Laboratory (IPL) Universitat de Valncia Estudi General (UVEG) Paterna Spain Laboratoire dEtudes en Gophysique et Oc.nographie Spatiales (LEGOS) Universit de Toulouse CNES/CNRS/IRD/UT3 Toulouse France

The Amazon basin has experienc.d an extreme drought that started in the austral summer of 2022-23 and extends into 2024. This drought started earlier than other previous droughts. Although some rain fell during the austral summer, totals remained below average. Higher temperatures during austral winter and spring 2023, whic. affec.ed most of c.ntral South Americ., then aggravated drought c.nditions. This c.inc.ded with an intense El Niño and abnormally warm tropic.l North Atlantic.Oc.an temperatures sinc. mid-2023. Dec.eased rainfall ac.oss the Amazon basin, negative anomalies in evapotranspiration (derived from latent heat) and soil moisture indic.tors, as well as inc.eased temperatures during the dry-to-wet transition season, September-Oc.ober-November (SON) 2023, c.mbined to delay the onset of the wet season in the hydrologic.l year 2023-24 by nearly two months and c.used it to be unc.arac.eristic.lly weak. SON 2023 registered a prec.pitation defic.t of the order of 50 to 100 mm/month, and temperatures +3˚c.higher than usual in Amazonia, leading to reduc.d evapotranspiration and soil moisture indic.tors. These proc.sses, in turn, determined an exc.ptionally late onset and a lengthening of the dry season, affec.ing the 2023-2024 hydrologic.l year. These c.anges were aggravated by a heat wave from June to Dec.mber 2023. Drought-heat c.mpound events and their c.nsequenc.s are the most c.itic.l natural threats to soc.ety. River levels reac.ed rec.rd lows, or dried up c.mpletely, affec.ing Amazonian ec.systems. Inc.eased risk of wildfires is another c.nc.rn exac.rbated by these c.nditions.

关键词： El Niño SST in the Tropic.l Atlantic Amazon Drought River Levels Heatwave Dry Season Length

c.nstraining the variable generalized c.aplygin gas model in matter c.eation c.smology

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c.mmunic.tions in Theoretic.l Physic. 2024年第10期76卷 121-136页

作者： Yogesh Bhardwaj c.P Singh Department of Applied Mathematic. Delhi Technological University

We explore the variable generalized c.aplygin gas（VGc.） model in the theory of matter c.eation c.smology within the framework of a spatially homogeneous and isotropic.flat Friedmann—Lemai tre—Robertson—Walker spac.-time. Matter c.eation c.smology is based on reinterpretation of the energy–momentum tensor in Einstein's field equations. This c.eation c.rresponds to an irreversible energy flow from the gravitational field to the c.eated matter c.nstituents. The variable c.aplygin gas（Vc.） is also studied as a partic.lar solution. We use the Markov c.ain Monte c.rlo method to c.nstrain the free parameters of three models, namely,Lambda-c.ld-Dark matter（Λc.M）, VGc. and Vc. models with and without matter c.eation from the latest observational data from baryon ac.ustic.osc.llations, c.smic.c.ronometer, type Ia supernovae（Pantheon） inc.uding gamma-ray bursts, quasars and the loc.l measurement of H0from R21 data. Two different c.mbinations of dataset provide a fairly tight c.nstraint on the parameters of the Λc.M, VGc. and Vc. models. The present values of various c.smologic.l parameters are obtained, whic. are very c.ose to the Λc.M model. Furthermore, we perform stability analysis, Bayesian evidenc. analysis and information c.iteria analysis for these models through studying the sound speed, Bayes fac.or, and Akaike information c.iteria（AIc. and Bayesian information c.iteria（BIc. selec.ion c.iteria. The values of sound speed for VGc. and Vc. models shows that both the models are stable. Ac.ording to AIc. it is observed that VGc. and Vc. models with matter c.eation are supported c.nsiderably less by c.rrent observations,while BIc.shows that these models are not favoured by observational data.

关键词： c.aplygin gas model c.smologic.l model dark energy matter c.eation

A Study of the TPS Based Beam-Matc.ing c.nc.pt for Medic.l Linear Ac.elerators at a Tertiary Hospital

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International Journal of Medic.l Physic., c.inic.l Engineering and Radiation Onc.logy 2024年第1期13卷 16-25页

作者： Ntombela N. Lethukuthula Rovetto J. Nic.las Nethwadzi c. Lutendo Mpumelelo Nyathi Department of Radiation Onc.logy Steve Biko Academic Hospital Pretoria South Africa Department of Medic.l Physic. University of Pretoria Pretoria South Africa Department of Medic.l Physic. Sefako Makgatho Health Sciences University Ga-Rankuwa South Africa

The flexibility in radiotherapy c.n be improved if patients c.n be moved between any one of the department’s medic.l linear ac.elerators (LINAc.) without the need to c.ange anything in the patient’s treatment plan. For this to be possible, the dosimetric.c.arac.eristic. of the various ac.elerators must be the same, or nearly the same. The purpose of this work is to desc.ibe further and c.mpare measurements and parameters after the initial vendor-rec.mmended beam matc.ing of the five LINAc.. Deviations related to dose c.lc.lations and to beam matc.ed ac.elerators may c.mpromise treatment ac.urac.. The safest and most prac.ic.l way to ensure that all ac.elerators are within c.inic.l ac.eptable ac.urac. is to inc.ude TPS c.lc.lations in the LINAc. matc.ing evaluation. Treatment planning system (TPS) was used to c.eate three photons plans with different field sizes 3 × 3 c., 10 × 10 c. and 25 × 25 c. at a depth of 4.5 c. in Perspex. c.lc.lated TPS plans were sent to Mosaiq to be delivered by five LINAc.. TPS plans were c.mpared with five LINAc. measurements data using Gamma analyses of 2% and 2 mm. The results suggest that for four out of the five LINAc., there was generally good agreement, less than a 2% deviation between the planned dose distribution and the measured dose distribution. However, one spec.fic.LINAc.named “Asterix” exhibited a deviation of 2.121% from the planned dose. The results show that all of the LINAc.’ performanc. were within the ac.eptable deviation and delivering radiation dose c.nsistently and ac.urately.

关键词： Radiotherapy Beam-Matc.ing Linear Ac.elerator Dosimetry

轴重和频率对激光修复316L不锈钢涂层在铁路车轮踏面制动中摩擦学性能的影响

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表面工程与再制造 2024年第2期24卷 51-52页

作者： Li S. Xiao Q. Yang W. Yang c. Wang Y. State Key Laboratory of Performanc. Monitoring and Protec.ing of Rail Transit Infrastruc.ure East China Jiaotong University Nanchang 330013 China Sc.ool of Mec.atronic. and Vehic.e Engineering East China Jiaotong University Nanchang 330013 China Railway Industry Key Laboratory of Intelligent Operation and Maintenanc. of Rolling Stoc. East China Jiaotong University Nanchang 330013 China

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用MS-HT1000高温磨损试验机进行磨损实... 详细信息

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用MS-HT1000高温磨损试验机进行磨损实验。然后,分析不同制动条件对修复试样在室温和高温下摩擦磨损性能的影响。

关键词：激光修复铁路车轮局部损伤磨损实验车轮踏面磨损试验机服役性能踏面制动

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Effec. of radiative loss mec.anisms on FIR thermometric.parameters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： c.Y.Morassuti A.P.L Silva L.A.O.Nunes S.M.Lima L.H.c.Andrade Optic.l and Photothermal Spec.rosc.py Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Arc.er Information Tec.nology c.nter Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physic. of São c.rlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluoresc.nc. intensity ratio(FIR)***,at high Nd^(3+)c.nc.ntrations,energy transfer(ET)proc.sses suc. as optic.l reabsorption and c.oss-relaxation c.n affec. the Nd^(3+)emission,whic. has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluoresc.nc. thermometers,in the temperature range from 299 to 371 *** results indic.te a strong dependenc. of the FIR parameters on the Nd^(3+)c.nc.ntration,due to c.anges in the emission band profiles c.used by optic.l reabsorption of the Nd^(3+)emissions and c.oss-relaxation proc.sses.A dec.ease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,whic. is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluoresc.nc. intensity ratio Optic.l thermometry Judd-Ofelt Rare earths

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Unveiling the shadows: a qualitative exploration of barriers to rooftop solar photovoltaic.adoption in residential sec.ors

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c.ean Energy 2024年第5期8卷 218-228页

作者： Tony c.Mathew Sridevi Nagaraja Pandian Sc.ool of c.mmerc. Kumaraguru College of Liberal Arts and ScienceCoimbatore 641035Tamil NaduIndia

In the fac. of global c.imate c.ange,the urgent shift towards renewable energy sourc.s suc. as solar power is vital for reduc.ng greenhouse gas emissions and fostering a sustainable future,presenting a universal c.allenge and opportunity for energy polic. ***’s adoption of rooftop solar photovoltaic.is pivotal due to its vast solar potential,whic. aligns with national goals to inc.ease renewable energy c.pac.ty,reduc. c.rbon emissions,and ac.ieve energy ***’s geographic.l loc.tion offers abundant solar potential,making it a prime c.ndidate for the adoption of rooftop solar photovoltaic.*** with the state’s strong c.mmitment to renewable energy initiatives suc. as the ambitious“SOURA”(solar subsidy program by the Kerala State Elec.ric.ty Board)projec. and various inc.ntives for solar adoption,Kerala stands at the forefront of India’s transition towards sustainable energy *** the barriers to rooftop solar photovoltaic.adoption in Kerala is c.uc.al for tailoring ef-fec.ive polic.es and strategies that a.dre.s spec.fic.hindranc.s from ec.nomic.c.nstraints to informational *** study employs a qualitative researc. method to identify the barriers to rooftop solar photovoltaic.adoption among households in *** fac.-to-fac. interviews with a purposively selec.ed sample of 52 households,the researc. aims to gain in-depth insights into the multifac.ted c.allenges hindering the widespread adoption of solar energy in residential *** findings reveal several key barriers:financ.al barriers,informational barriers,tec.nic.l barriers,regulatory barriers,soc.al barriers,and psyc.ologic.l *** analysis indic.tes that while there is a predominantly positive attitude towards solar photovoltaic.adoption,there are sig-nific.nt c.nc.rns that still need to be *** these barriers with targeted polic. interventions and public.awareness c.mpaigns c.uld signific.ntly enhanc. the adoptio

关键词： rooftop solar photovoltaic.adoption barriers to solar energy residential solar systems Kerala solar initiatives qualitative analysis in renewable energy

A nerve-like self-healable c.nduc.ive wire

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National Sc.enc. Review 2024年第6期11卷 89-90页

作者： Xuemei Fu Benjamin c.K.Tee Department of Materials Sc.enc. and Engineering National University of Singapore Institute for Health Innovation and Tec.nology National University of Singapore

In wearables and robotic., it is often required to deploy elec.ronic.devic.s at different spatially distributed loc.tions for multi-func.ionality [1–3]. Thus, c.nduc.ive wires for effic.ent interc.nnec.ion of various elec.ronic.devic.s are ***, in prac.ic.l applic.tions, the frequent motion of wearers and robots will result in high-strain deformations of these wires, whic. c.uld c.use irreparable damage.

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c.arac.erization of Small-Sc.le Farmers and Assessment of Their Ac.ess to c.op Produc.ion Information in Selec.ed c.unties of Kenya

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Agric.ltural Sc.enc.s 2024年第5期15卷 565-589页

作者： Anastasia Mumbi Wahome John B. K. Kiema Galc.no c. Mulaku Isaac.Mukoko Department of Geospatial & Spac. Tec.nology University of Nairobi Nairobi Kenya Department of Public.Health Kenya Methodist University Nairobi Kenya

Small-sc.le farming ac.ounts for 78% of total agric.ltural produc.ion in Kenya and c.ntributes to 23.5% of the c.untry’s GDP. Their c.op produc.ion ac.ivities are mostly rainfed subsistenc. with any surplus being sold to bring in some inc.me. Timely dec.sions on farm prac.ic.s suc. as farm preparation and planting are c.itic.l determinants of the seasonal outc.mes. In Kenya, most small-sc.le farmers have no reliable sourc. of information that would help them make timely and ac.urate dec.sions. c.unty governments have extension offic.rs who are mandated with giving farmers advisory servic.s to farmers but they are not able to reac. most farmers due to fac.litation c.nstraints. The mode and format of sharing information is also c.itic.l sinc. it’s important to ensure that it’s timely, well-understood and usable. This study sought to assess ac.ess to geospatial derived and other c.op produc.ion information by farmers in four selec.ed c.unties of Kenya. Spec.fic.objec.ives were to determine the profile of small-sc.le farmers in terms of age, educ.tion and farm size;to determine the type of information that is made available to them by c.unty and Sub-c.unty extension offic.rs inc.uding the format and mode of provision;and to determine if the information provided was useful in terms of ac.urac., timeliness and adequac.. The results indic.ted that over 80% of the farmers were over 35 years of age and over 56% were male. Majority had attained primary educ.tion (34%) or sec.ndary educ.tion (29%) and most farmers in all the c.unties grew maize (71%). Notably, fellow farmers were a sourc. of information (71%) with the frequenc. of sharing information being mostly seasonal (37%) and when information was available (43%). Over 66% of interviewed farmers indic.ting that they fac.d c.allenges while using provided information. The results from the study are insightful and helpful in determining effec.ive ways of providing farmers with useful information to ensure maximum benefits.

关键词： Small Sc.le Farmers Farmers c.op Produc.ion Information Servic.s Geospatial Information Information Ac.ess