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Noise test of two manufactured power tillers during transport on different local road conditions

International Journal of Agricultural and Biological Engineering 2010年第4期3卷 19-27页

作者： E E Sehsah m A helmy h m sorour Department of Agricultural Engineering Faculty of Agricultural Kafr El-SheikhKafr El-Sheikh University33516-kafr El-SheikhEgypt

hearing injury due to exposure to excessive noise during general farming activities is a significant problem for *** present investigation was carried out for better understanding of the noise propagation trends,as well as noise attenuation characteristics of the two different developed power tillers on different surfaces in transportation under Egyptian *** Egypt,the agricultural roads are one of the main problems that limited the usage of farm *** the last few years,it is noticed that the manufacturers and farmers in Egypt applied the diesel engine of command irrigation pump as the source of power for the manufactured power *** their on-farm application in Egypt,they are also engaged in transportation of agricultural products and human beings on the asphalt,and dirt rural *** spite of their adverse effects due to noise on operators and bystanders,limited information is available concerning the noise investigation of these manufactured *** aim of this research was to evaluate the noise propagation trends as well as noise attenuation characteristics of the manufactured power tillers on different surfaces in transportation *** developed power tillers that used in this study were fitted with approximately 6 kW(8 hp)and 7.5 kW(10 hp)diesel engines for two different tillers transport *** measurement and recording the sound pressure signals of the power tillers,the variables of engine speeds and gear ratios were varied to cover the most normal range of the power tillers operation in transportation conditions for the asphalt and dirt rural *** test sites were prepared according to SAE noise measurement test *** maximum overall noise measured at driver ear’s position at different gear ratios in asphalt,and dirt rural roads were about 98.2 and 92 dB(A)for 1,350 r/min engine speed which is higher than allowable noise exposure prescribed by National Institute for Occupational Safety a

关键词： noise test power tiller diesel engines transportation manufacture

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mossbauer,optical and structural properties of Fe^(3+) ion in borate glass

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Journal of Rare Earths 2025年第1期43卷 162-170,I0006页

作者： Essam A.Elkelany hesham Y.Amin A.Samir m.m.EL-hady h.h.El-Bahnasawy moukhtar A.hassan Basic Science Department Faculty of EngineeringSinai UniversityAl-Arish45511Egypt School of Information and Electrical Engineering Hangzhou City UniversityHangzhou30015China State Key Laboratory of modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou310027China Basic Science Department Faculty of Engineering at ShoubraBenha University11629Egypt Physics Department Faculty of ScienceAl-Azhar University11884CairoEgypt

Lanthanum-bearing iron lithium borate glass is a quaternary system for oxide glasses and was prepared via the melt-quenching *** present article correlates the structure,optical,ligand field and m?ssbauer data on iron lithium borate glass co ntaining La^(3+).The density was measured,while the molar volume was *** physical parameters are *** increasing the La_(2)O_(3) content within the glass network,infrared spectra analysis reveals structural modifications such as the increase in BO_(4) units and the decline in both BO_(3) units and NBO bonds ***,optical absorption spectra were *** absorption spectra disclose a plethora of electronic transitions that are related to Fe^(3+)in tetrahedral and octahedral sites,however,Fe^(2+)phase is not observed in optical spectra,but it has a clear signature in m?ssbauer ***,the glass absorption edges undergo a clear blue shift,reflecting an increased band gap energy(1.96-2.28 eV).The decline in NBO bonds justifies this ***,the values of crystal field splitting are increased,while the values of Racah parameters are *** trend is justified by the decline in NBO bonds and increases electron localization around Fe cations.m?ssbauer spectra confirm the existence of Fe^(3+)in tetrahedral and octahedral sites,while Fe^(2+)exists in only a tetrahedral *** increasing La_(2)O_(3) content,the isomer shift of Fe^(3+)in tetrahedral sites changes to be 0.312-0.329 mm/s,while the isomer shift of octahedral Fe^(3+)is 0.424-0.456 mm/*** findings coincide with optical *** the isomer shift of tetrahedral Fe^(2+)is 0.902-0.911 mm/*** results of structural,optical and ligand field associated with m?ssbauer spectra open more vistas toward the utility of these samples in the optics realm.

关键词： Fe3+ions Rare-earth oxide mossbauer spectra Ligand field parameters Optical properties

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Clinical,laboratory,and therapeutic differences between immunoglobulin E-mediated and non-immunoglobulin E-mediated cow’s milk protein allergy in children

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World Journal of Clinical Pediatrics 2025年第1期14卷 78-92页

作者： hasan m Isa marwa J Abdulnabi Nawra S Naser Fatema N Lahmda Noor m AlAnsari Zahra h Isa Afaf m mohamed Department of Pediatrics Salmaniya Medical ComplexManama 26671Bahrain Department of Pediatrics Arabian Gulf UniversityManama 26671Bahrain Faculty of medicine Mansoura UniversityMansoura 35516Egypt Public health Directorate Ministry of HealthManama 26671Bahrain

BACKGROUND Although breast milk is ideal for newborns,in some cases,it is replaced with cow’s milk,which contains proteins that increase the risk of cow’s milk protein allergy(CmPA).AIm To evaluate CmPA prevalence in Bahrain and compare clinical characteristics of children with immunoglobulin E(IgE)-and non-IgE-mediated *** This retrospective cohort study examined children with CmPA diagnosed at the pediatric gastroenterology outpatient clinic of the Salmaniya medical Complex,Bahrain,between 2014 and 2022,and assessed CmPA *** presentations,laboratory findings,dietary modifications,and outcomes were compared between children with IgE-mediated and non-IgE-mediated *** variables were compared using Fisher’s exact test or Pearson’sχ2 test,whereas continuous variables were compared using Student’s t-test or the mann-Whitney U *** Of 8332 patients,6022(72.3%)adhered to their *** them,618(10.3%)were suggested of having CmPA and 595(96.3%)were included;CmPA prevalence was 2%.most patients were Bahraini(93.8%)and males(55.3%).Non-IgE-mediated type accounted for 77.3%cases and IgE-mediated type,22.7%.IgE-mediated CmPA presented more in boys(P=0.030),and later in life(5.1 months±4.5 months vs 4.2 months±4.2 months,P=0.016,95%CI:0.08-1.73),had more associated diseases(Ph more cutaneous(P=0.024)and respiratory(P=0.003)manifestations,severe symptoms[rash/dry skin(P=0.031),facial swelling/angioedema(P=0.003),failure to thrive(P=0.013),apparent life-threatening event(Physical findings(P=0.002)than non-IgE-mediated *** patients were exclusively fed cow milk formula(50.3%).The amino acid-based formula(AAF)was most prescribed(60.5%)with no difference between the two types(P=0.173).Although breastfeeding was recommended to 49.6%,only 8.2%were exclusively ***-mediated CmPA was associated with a longer follow-up duration than non-IgE-mediated CmPA(17.3 months±14.0 mo

关键词： Children milk allergy Immunoglobulin E Breastfeeding Infant formula Bahrain

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Seasonal influence on miRNA expression dynamics of extracellular vesicles in equine follicular fluid

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Journal of Animal Science and Biotechnology 2025年第1期16卷 136-152页

作者： Jean m.Feugang Ahmed Gad Nico G.menjivar Ghassan m.Ishak Samuel Gebremedhn melba O.Gastal Notsile h.Dlamini Radek Prochazka Eduardo L.Gastal Dawit Tesfaye Department of Animal and Dairy Sciences Mississippi State UniversityMississippi StateMS 39762USA Animal Reproduction and Biotechnology Laboratory(ARBL) Department of Biomedical SciencesCollege of Veterinary Medicine and Biomedical SciencesColorado State UniversityFort CollinsCO 80523USA Department of Animal Production Faculty of AgricultureCairo UniversityGiza 12613Egypt Department of Surgery and Obstetrics College of Veterinary MedicineUniversity of BaghdadBaghdad 10011Iraq Animal Science School of Agricultural SciencesSouthern Illinois UniversityCarbondaleIL 62901USA J.R.Simplot Company KunaID 83634USA Institute of Animal Physiology and Genetics Czech Academy of SciencesLiběchov 27721Czech Republic

Background Ovarian follicular fluid(FF)is a dynamic environment that changes with the seasons,affecting follicle development,ovulation,and oocyte *** in the follicles release tiny particles called extracellular vesicles(EVs)containing vital regulatory molecules,such as microRNAs(miRNAs).These miRNAs are pivotal in facilitating commu-nication within the follicles through diverse signaling and information transfer ***-coupled miRNA signaling is implicated to be associated with ovarian function,follicle and oocyte growth and response to various environmen-tal ***,we investigated how seasonal variations directly influence the ovulatory and anovulatory states of ovarian follicles and how are they associated with follicular fluid EV-coupled miRNA dynamics in *** Ultrasonographic monitoring and follicular fluid aspiration of preovulatory follicles in horses during the ano-vulatory(spring:non-breeding)and ovulatory(spring,summer,and fall:breeding)seasons and subsequent EV isola-tion and miRNA profiling identified significant variation in EV-miRNA cargo *** identified 97 miRNAs with dif-ferential expression among the groups and specific clusters of miRNAs involved in the spring transition(miR-149,-200b,-206,-221,-328,and-615)and peak breeding period(including miR-143,-192,-451,-302b,-100,and let-7c).Bioinformatic analyses showed enrichments in various biological functions,e.g.,transcription factor activity,transcrip-tion and transcription regulation,nucleic acid binding,sequence-specific DNA binding,p53 signaling,and post-trans-lational *** analyses revealed distinct sets of significantly up-and down-regulated miRNAs associ-ated with spring anovulatory(Cluster 1)and summer ovulation–the peak breeding season(Clusters 4 and 6).Conclusions The findings from the current study shed light on the dynamics of FF-EV-coupled miRNAs in relation to equine ovulatory and anovulatory seasons,and their roles in understanding the

关键词： Extracellular vesicle Follicle growth Follicular fluid horse mare Ovulation Pre-ovulation Seasonal breeding

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Study of the semilepottonic decays Υ(1S)→B_((c))lν_(l)

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Chinese Physics C 2025年第1期49卷 177-185页

作者： C.T.Tran m.A.Ivanov P.Santorelli h.C.Tran Department of Physics HCMC University of Technology and EducationVo Van Ngan 1700000 Ho Chi Minh CityVietnam Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear Research141980 DubnaRussia Dipartimento di Fisica“E.Pancini” Universitàdi Napoli Federico IIComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126NapoliItaly Istituto Nazionale di Fisica Nucleare Sezione di Napoli80126 NapoliItaly

We study the exclusive semileptonic decaysΥ(1S)→B_((c))lν_(l),where t=e,μ,*** relevant hadronic form factors are calculated using the covariant confined quark model developed previously by our *** predict the branching fractions B(Υ(1S)→B_((c))lν_(l))(vl)to be of the order of 10^(-13)and 10^(-10)for the case of B and B_(C),*** predictions agree well with other theoretical *** also consider the effects of possible new physics in the case of Υ(1S)→B_((c))τν_(τ)and show that the branching fraction of this decay can be enhanced by an order of magnitude using constraints from the B-→D^((*))lν_(l)and B_(C)→J/Ψlν_(l)experimental data.

关键词： heavy quarkonia covariant confined quark model semileptonic decay

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Combining slow-release fertilizer and plastic film mulching reduced the carbon footprint and enhanced maize yield on the Loess Plateau

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Journal of Environmental Sciences 2025年第1期147卷 359-369页

作者： Xiaoqing han Pengfei Dang Lechen Liao Fangqi Song miaomiao Zhang maoxue Zhang Guoqing Li Shuyue Wen Ning Yang Xiping Pan Xiaofan Wang WenWang Xiaoliang Qin Charles O.Joseph Kadambot h.m.Siddique College of Agronomy Key Laboratory of Crop Physi-ecology and Tillage Science in Northwestern Loess PlateauNorthwest A&F UniversityYanglingShaanxi 712100China Department of Crop Sciences and Beekeeping Technology College of Agricultural Sciences and Food Technology University of Dar es SalaamMwalimu Julius Nyerere Mlimani CampusP.O.Box 35091Dar es SalaamTanzania College of Life Science Yulin UniversityChongwen Road No.4YulinShaanxi719000China The UWA Institute of Agriculture and School of Agriculture&Environment The University of Western AustraliaPerth WA 6001Australia

Agricultural practices significantly contribute to greenhouse gas(GhG)emissions,necessitating cleaner production technologies to reduce environmental pressure and achieve sustainable maize *** film mulching is commonly used in the Loess Plateau *** slow-release fertilizers as a replacement for urea within this practice can reduce nitrogen losses and enhance crop *** these techniques represents a novel agricultural approach in semi-arid ***,the impact of this integration on soil carbon storage(SOCS),carbon footprint(CF),and economic benefits has received limited research ***,we conducted an eight-year study(2015-2022)in the semi-arid northwestern region to quantify the effects of four treatments[urea supplied without plastic film mulching(CK-U),slow-release fertilizer supplied without plastic film mulching(CK-S),urea supplied with plastic film mulching(Pm-U),and slow-release fertilizer supplied with plastic film mulching(Pm-S)]on soil fertility,economic and environmental *** results revealed that nitrogen fertilizer was the primary contributor to total GhG emissions(≥71.97%).Compared to other treatments,Pm-S increased average grain yield by 12.01%-37.89%,water use efficiency by 9.19%-23.33%,nitrogen accumulation by 27.07%-66.19%,and net return by 6.21%-29.57%.Furthermore,Pm-S decreased CF by 12.87%-44.31%and CF per net return by 14.25%-41.16%.After eight years,Pm-S increased SOCS(0-40 cm)by 2.46%,while Pm-U decreased it by 7.09%.These findings highlight the positive effects of Pm-S on surface soil fertility,economic gains,and environmental benefits in spring maize production on the Loess Plateau,underscoring its potential for widespread adoption and application.

关键词： Plastic film mulching Slow-release fertilizer maize grain yield Carbon footprint Economic benefits

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The sexually dimorphic expression of glutamate transporters and their implication in pain after spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3317-3329页

作者： Jennifer m.Colón-mercado Aranza I.Torrado-Tapias Iris K.Salgado Jose m.Santiago Samuel E.Ocasio Rivera Dina P.Bracho-Rincon Luis h.Pagan Rivera Jorge D.miranda Department of Physiology University of Puerto RicoMedical Sciences CampusSan JuanPRUSA National Institutes of health National Human Genome Research InstituteBethesdaMDUSA Universidad Central del Caribe School of MedicineBayamónPRUSA University of Puerto Rico Carolina CampusCarolinaPRUSA Institute of Neurobiology San JuanPRUSA

In addition to the loss of motor function,~60% of patients develop pain after spinal cord *** cellular-molecular mechanisms are not well understood,but the data suggests that plasticity within the rostral,epicenter,and caudal penumbra of the injury site initiates a cellularmolecular interplay that acts as a rewiring mechanism leading to central neuropathic *** can lead to the formation of new connections triggering abnormal sensory *** excitatory glutamate transporters are responsible for the reuptake of extracellular glutamate which makes them a critical target to prevent neuronal hyperexcitability and *** previous studies showed a sexually dimorphic therapeutic window for spinal cord injury after treatment with the selective estrogen receptor modulator *** this study,we investigated the anti-allodynic effects of tamoxifen in male and female rats with spinal cord *** hypothesized that tamoxifen exerts anti-allodynic effects by increasing the expression of glutamate transporters,leading to reduced hyperexcitability of the secondary neuron or by decreasing aberrant *** and female rats received a moderate contusion to the thoracic spinal cord followed by subcutaneous slow-release treatment of tamoxifen or matrix pellets as a control(placebo).We used von Frey monofilaments and the“up-down method”to evaluate mechanical *** treatment decreased allodynia only in female rats with spinal cord injury revealing a sexdependent *** expression profile of glutamatergic transporters(excitatory amino acid transporter 1/glutamate aspartate transporter and excitatory amino acid transporter 2/glutamate transporter-1)revealed a sexual dimorphism in the rostral,epicenter,and caudal areas of the spinal cord with a pattern of expression primarily on *** rodents showed a significantly higher level of excitatory amino acid transporter-1 expression while male rodents showed increased

关键词： allodynia central neuropathic pain EAAT-1/GLAST EAAT-2/GLT-1 glutamate transporters selective estrogen receptor modulator sexual dimorphism spinal cord injury trauma

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A hybrid Virtual Cloud Learning model during the COVID-19 Pandemic

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Computers, materials & Continua 2021年第3期66卷 2671-2689页

作者： Shaymaa E.sorour Tamer m.Kamel hanan E.Abdelkader Department of Educaion Technology(Computer Teacher Preparation) Kafrelsheikh University33516Egypt Department of Educaion Technology Kafrelsheikh University33516Egypt Department of Computer Teacher Preparation Mansoura University35516Egypt

The COVID-19 pandemic has affected the educational systems worldwide,leading to the near-total closures of schools,universities,and *** need to adapt to changes to face this crisis without negatively affecting students’***,the purpose of this study is to identify and help solve to critical challenges and factors that influence the e-learning system for Computer maintenance courses during the COVID-19 *** paper examines the effect of a hybrid modeling approach that uses Cloud Computing Services(CCS)and Virtual Reality(VR)in a Virtual Cloud Learning Environment(VCLE)*** VCLE system provides students with various utilities and educational services such as presentation slides/text,data sharing,assignments,quizzes/tests,and *** addition,learning through VR enables the students to simulate physical presence,and they respond well to VR environments that are closer to reality as they feel that they are an integral part of the ***,the research presents a rubric assessment that the students can use to reflect on the skills they used during the *** research findings offer useful suggestions for enabling students to become acquainted with the proposed system’s usage,especially during theCOVID-19 pandemic,and for improving student achievementmore than the traditional methods of learning.

关键词： Virtual cloud learning environment virtual reality environment rubric assessment COVID-19 critical challenges

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ON ThE GAUSSIAN KINEmATIC FORmULA OF *** AND ***

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Acta mathematica Scientia 2025年第1期45卷 200-214页

作者： Joseph h.G.FU Department of mathematics University of Georgia

We apply methods of algebraic integral geometry to prove a special case of the Gaussian kinematic formula of *** idea,suggested already by Adler and Taylor,is to view the GKF as the limit of spherical kinematic formul... 详细信息

关键词： 51m16 52A22 53C65 Gaussian density integral geometry kinematic formula probability density

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Two texture zeros for Dirac neutrinos in a diagonal charged lepton basis

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Chinese Physics C 2025年第1期49卷 127-138页

作者： Yessica Lenis John D.Gómez William A.Ponce Richard h.Benavides Instituto de Física Universidad de AntioquiaA.A.1226MedellínColombia Instituto Tecnológico metropolitano Facultad de Ciencias Exactas y AplicadasCalle 73 N°76-354 via el voladorMedellínColombia

A systematic study of the neutrino mass matrix m_(v) with two texture zeros in a basis that the charged leptons are diagonal,and under the assumption that neutrinos are Dirac particles is *** study is conducted without any approximation,first analytically and then *** neutrino oscillation data is used in our *** implications of m_(v) on lepton CP violation and neutrino mass spectrum are explored.

关键词： neutrinos texture zeros Dirac particles

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