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Synthesis of an eco-friendly nanocomposite fertilizer for common bean based on carbon nanoparticles from agricultural waste biochar

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Pedosphere 2021年第6期31卷 923-933页

作者： dina m.salama mahmoud E.ABD EL-AZIZ mehrez E.EL-NAGGAR Essam A.SHAABAN mohamed S.ABD EL-WAHED Vegetable Research Department National Research Centre33 El Bohouth StreetDokkiGiza 12622(Egypt) Polymers&Pigments Department National Research Centre33 El Bohouth StreetDokkiGiza 12622(Egypt) Textile Research Division National Research Centre33 El Bohouth StreetDokkiGiza 12622(Egypt) Pomology Department National Research Centre33 El Bohouth StreetDokkiGiza 12622(Egypt) Botany Department National Research Centre33 El Bohouth StreetDokkiGiza 12622(Egypt)

The burning of agricultural waste is a major cause of environmental *** this study,we sought to prepare biochar from agricultural waste as a source material for the preparation of carbon nanoparticles(CNPs).Surface morphology,hydrodynamic particle size,and purity and crystallinity of CNPs were extensively investigated using transmission electron microscopy(TEm),zeta sizing,and X-ray diffraction(XRD)spectroscopy,*** CNPs were subsequently immersed in a solution of potassium nitrate(KNO_(3))to prepare a CNPs/NK nanocomposite(CNPs loaded with nitrogen(N)and potassium(K))as a nanocomposite fertilizer for common bean(Phaseolus vulgaris L.).The CNPs/NK nanocomposite was sprayed as a foliar fertilizer at 0,10,20,30,and 40 mg L^(-1) on common bean plants 25 d after sowing on a farm in Shebin El-Kom,El-monifia,*** growth,yield,and quality of common bean were investigated during two successive growing seasons(2017 and 2018).The highest seed yields of 2.04 and 2.01 t ha^(-1) and the highest values of growth parameters including plant height of 61.5 and 59.2 cm,number of leaves per plant of 35 and 35,number of flowers per plant of 83.3 and 82.7,and plant fresh weight of 148.7 and 152.8 g plant^(-1) were obtained when using the CNPs/NK nanocomposite at a concentration of 20 mg L^(-1) during the 2017 and 2018 growing seasons,respectively.

关键词： foliar fertilizer N and K-loaded nanosized carbon particles Phaseolus vulgaris L. plant growth yield

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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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Improving Date Fruit Classification Using Cycle GAN-Generated Dataset

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Computer modeling in Engineering & Sciences 2022年第4期131卷 331-348页

作者： dina m.Ibrahim Nada m.Elshennawy Department of Information Technology College of ComputerQassim UniversityBuraydah51452Saudi Arabia Computers and Control Engineering Department Faculty of EngineeringTanta UniversityTanta37133Egypt

Dates are an important part of human *** are high in essential nutrients and provide a number of health *** fruits are also known to protect against a number of diseases,including cancer and heart *** fruits have several sizes,colors,tastes,and *** are a lot of challenges facing the date *** of the most significant challenges is the classification and sorting of *** there is no public dataset for date fruits,which is a major limitation in order to improve the performance of convolutional neural networks(CNN)models and avoid the overfitting *** this paper,an augmented date fruits dataset was developed using Deep Convolutional Generative Adversarial Networks(DCGAN)and CycleGAN approach to augment our collected date fruit *** augmentation is required to address the issue of a restricted number of images in our datasets,as well as to establish a balanced *** are three types of dates in our proposed dataset:Sukkari,Ajwa,and *** dataset augmentation,we train our created dataset using ResNet152V2 and CNN models to assess the classification process for our three categories in the *** train these two models,we start with the original ***,the models were trained using the DCGAN-generated dataset,followed by the CycleGAN-generated *** resulting results demonstrated that when using the ResNet152V2model,the CycleGAN-generated dataset had the highest classification performance with 96.8%accuracy,followed by the CNN model with 94.3%accuracy.

关键词： Dates fruits data augmentation DCGAN CycleGAN,deep learning convolution neural networks

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Constrained Fractional Variational Problems of Variable Order

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IEEE/CAA Journal of Automatica Sinica 2017年第1期4卷 80-88页

作者： dina Tavares Ricardo Almeida Delfim F.m.Torres Department of mathematics Polytechnic Institute of Leiria Department of mathematics University of Aveiro

Isoperimetric problems consist in minimizing or maximizing a cost functional subject to an integral *** this work, we present two fractional isoperimetric problems where the Lagrangian depends on a combined Caputo derivative of variable fractional order and we present a new variational problem subject to a holonomic constraint. We establish necessary optimality conditions in order to determine the minimizers of the fractional problems. The terminal point in the cost integral,as well as the terminal state, are considered to be free, and we obtain corresponding natural boundary conditions.

关键词： Fractional calculus fractional calculus of variations holonomic constraints isoperimetric constraints optimization variable fractional order

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Parasites of the Nile rat in rural and urban regions of Sudan

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Integrative Zoology 2009年第2期4卷 179-187页

作者： dina m.FAGIR El-Amin EL-RAYAH Department of Zoology University of KhartoumKhartoumSudan

In this investigation on endoparasites(helminths)and ectoparasites of the Nile rat(Arvicanthis niloticus Desmarest,1822),a total of 220 Nile rats were trapped from different regions of Sudan during the period January 2003–January *** of different tissues,identification of parasites,effect of these parasites on the organs,the preva-lence and intensity of infestation of the parasites and their relation to the habitat of the host,and sex-related infestations were *** showed that the variation among helminth species was wide,especially in those that are transferred by *** protozoan parasites or distortion in the infected tissues were *** examination for Toxoplasma gondii was carried *** species of cestodes(Hymenolepis nana,Hymenolepis diminuta),two genera(Raillietina sp.I,Raillietina ***)and one unidentified Hymenolepididae were *** most prevalent species of cestodes was Raillietina *** for nematodes only one species and one genus were recovered(monanema nilotica and Streptopharagus sp.).Investigation of skin revealed that 83.8%of rats were infested with one or more of ectoparasites;namely,insects and *** survey also revealed that fleas and lice were the most common ectoparasites that infested the Nile *** rodents,particularly those living in close association with man,play a significant role in human health,welfare and *** has to be stressed that their arthropod ectoparasites are important vectors of pathogenic microorganisms and they can also be important reservoirs for parasitic zoonoses,like trichinellosis and *** doubt,the increase in rodent populations could be followed by an increase in zoonotic diseases(Stojcevic et al.2004,Durden et al.2000).Rats and mice(commensal and wild)play an important role in public health,being carriers or reservoirs for infectious diseases that can be transmitted to humans(zoonoses).Xenopsylla cheopis is the most important vector

关键词： Arvicanthis fleas lice mites Nile rat Sudan ticks.

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HLR-Net: A Hybrid Lip-Reading model Based on Deep Convolutional Neural Networks

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Computers, materials & Continua 2021年第8期68卷 1531-1549页

作者： Amany m.Sarhan Nada m.Elshennawy dina m.Ibrahim Department of Computers and Control Engineering Faculty of EngineeringTanta UniversityTanta37133Egypt Department of Information Technology College of ComputerQassim UniversityBuraydah51452Saudi Arabia

Lip reading is typically regarded as visually interpreting the speaker’s lip movements during the *** is a task of decoding the text from the speaker’s mouth *** paper proposes a lip-reading model that helps deaf people and persons with hearing problems to understand a speaker by capturing a video of the speaker and inputting it into the proposed model to obtain the corresponding *** deep learning technologies makes it easier for users to extract a large number of different features,which can then be converted to probabilities of letters to obtain accurate *** proposed methods for lip reading are based on sequence-to-sequence architectures that are designed for natural machine translation and audio speech ***,in this paper,a deep convolutional neural network model called the hybrid lip-reading(HLR-Net)model is developed for lip reading from a *** proposed model includes three stages,namely,preprocessing,encoder,and decoder stages,which produce the output *** inception,gradient,and bidirectional GRU layers are used to build the encoder,and the attention,fully-connected,activation function layers are used to build the decoder,which performs the connectionist temporal classification(CTC).In comparison with the three recent models,namely,the LipNet model,the lip-reading model with cascaded attention(LCANet),and attention-CTC(A-ACA)model,on the GRID corpus dataset,the proposed HLR-Net model can achieve significant improvements,achieving the CER of 4.9%,WER of 9.7%,and Bleu score of 92%in the case of unseen speakers,and the CER of 1.4%,WER of 3.3%,and Bleu score of 99%in the case of overlapped speakers.

关键词： lip-reading visual speech recognition deep neural network connectionist temporal classification

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Latency-Aware Dynamic Second Offloading Service in SDN-Based Fog Architecture

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Computers, materials & Continua 2023年第4期75卷 1501-1526页

作者： Samah Ibrahim AlShathri dina S.m.Hassan Samia Allaoua Chelloug Information Technology Department College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh84428Saudi Arabia

Task offloading is a key strategy in Fog Computing (FC). Thedefinition of resource-constrained devices no longer applies to sensors andInternet of Things (IoT) embedded system devices alone. Smart and mobileunits can also be viewed as resource-constrained devices if the power, cloudapplications, and data cloud are included in the set of required resources. Ina cloud-fog-based architecture, a task instance running on an end device mayneed to be offloaded to a fog node to complete its execution. However, ina busy network, a second offloading decision is required when the fog nodebecomes overloaded. The possibility of offloading a task, for the second time,to a fog or a cloud node depends to a great extent on task importance, latencyconstraints, and required resources. This paper presents a dynamic service thatdetermines which tasks can endure a second offloading. The task type, latencyconstraints, and amount of required resources are used to select the offloadingdestination node. This study proposes three heuristic offloading *** algorithm targets a specific task type. An overloaded fog node can onlyissue one offloading request to execute one of these algorithms accordingto the task offloading priority. Offloading requests are sent to a SoftwareDefined Networking (SDN) controller. The fog node and controller determinethe number of offloaded tasks. Simulation results show that the average timerequired to select offloading nodes was improved by 33% when compared tothe dynamic fog-to-fog offloading algorithm. The distribution of workloadconverges to a uniform distribution when offloading latency-sensitive nonurgenttasks. The lowest offloading priority is assigned to latency-sensitivetasks with hard deadlines. At least 70% of these tasks are offloaded to fognodes that are one to three hops away from the overloaded node.

关键词： Fog computing offloading algorithm latency-aware software defined networking SDN

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Nucleon Form Factors and N-△ Transitions in a Hypercentral Constituent Quark model with meson Cloud

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Communications in Theoretical Physics 2007年第3期47卷 539-546页

作者： CHEN dina-Yong DONG Yu-Bing Institute of High Energy Physics the Chinese Academy of Sciences Beijing 100049 China Gradtuate School of the Chinese Academy of Sciences Beijing 100049 China

We study the nucleon form factors and the nucleon-△（1232） transitions in a framework of hypercentral constituent quark model. The pion meson cloud effect is taken into account explicitly. Our results show that the pion cloud contributes substantially to the nucleon form factors as well as to the helicity amplitudes of △（1232）, and it gives an improved agreement compared to the experimental.

关键词： electromagnetic form factor nucleon and △(1232) hypercentral constituent quark model meson cloud

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Persea americana attenuates inflammatory response associated with hyperlipidemia in ovariectomized and irradiated rats by regulating mmP-3/TImP-1 levels

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Asian Pacific Journal of Tropical Biomedicine 2022年第9期12卷 374-382页

作者： dina F.Elmaghraby Fatma A.m.Salem Esraa S.A.Ahmed Department of Health Radiation Research National Center for Radiation Research and TechnologyEgyptian Atomic Energy AuthorityCairoEgypt Department of Chemistry Faculty of ScienceHelwan UniversityCairoEgypt Radiation Biology Research National Center for Radiation Research and TechnologyEgyptian Atomic Energy AuthorityCairoEgypt

Objective:To explore the effect of Persea americana supplementation on inflammation,oxidative stress,and lipid profiles in ovariectomized rats fed with a high-fat diet and exposed to ***:The control group was sham operated,while groups 2-5 were ovariectomized and fed a high-fat *** 4 and 5 were exposed toγ-radiation(1 Gy/week for 5 weeks)after *** 3 and 5 were treated with 1 mL/250 g/day of Persea americana for one *** levels of estrogen,alanine aminotransferase,aspartate aminotransferase,cholesterol,triglycerides and lipoproteins were ***,hepatic oxidative stress,inflammatory and fibrogenic markers were ***:Persea americana treatment reduced the oxidative stress markers as well as the levels of triglyceride,total cholesterol,and low-density lipoprotein cholesterol,which in turn lowered hepatic fat ***,it suppressed hepatic inflammatory mediators(interleukin-6,tumor necrosis factor-α,and C-reactive protein)and downregulated pro-fibrogenic markers(transforming growth factor-βand tissue inhibitor of metalloproteinase-1).Conclusions:Persea americana provides protection against ovariectomy,and gamma radiation-mediated hepatic inflammation not only through its antioxidant,anti-inflammatory,lipid-lowering effect but also by modulating the fibrogenic markers.

关键词： Persea americana γ-Radiation Postmenopausal Oxidative stress Lipid Ovariectomy Hepatic inflammation Fibrogenic Rat

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Effective regulation of electronic structures and luminescence properties of LiGd_(9)(SiO_(4))6-x(GeO_(4))xO_(2):Dy^(3+)phosphors by tetrahedral substitution

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Journal of Rare Earths 2023年第5期41卷 673-681,I0002页

作者： Yuanyuan Zhang Lefu mei Haikun Liu Sergey m.Aksenov dina V.Deyneko Deliang Chen School of materials Sciences and Technology Dongguan University of TechnologyDongguan 523808China School of materials Science and Engineering Xi'an Jiaotong UniversityXi'an 710049China Beijing Key Laboratory of materials Utilization of Nonmetallic minerals and Solid Wastes National Laboratory of Mineral MaterialsSchool of Materials Sciences and TechnologyChina University of GeosciencesBeijing 100083China Department of Energy and Chemical Engineering Dongguan University of TechnologyDongguan 523808China Laboratory of Arctic mineralogy and material Sciences Kola Science CentreRussian Academy of Sciences14 Fersman StrApatity184209Russia Laboratory of Nature-Inspired Technologies and Environmental Safety of the Arctic Kola Science CentreRussian Academy of SciencesApatity18420 Russia Department of Chemistry Lomonosov Moscow State UniversityMoscow119991Russia School of materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

A series of Dy^(3+)-activated phosphors with the general formula LiGd_(9)(SiO_(4))6-x(GeO_(4))xO_(2):Dy^(3+)(0≤x≤3)characterized by an apatite-type structure were successfully synthesized via a simple solid-state technique involving a partial substitution of[SiO_(4)]^(4-)with[GeO_(4)]^(4-)*** effects of homovalent[GeO_(4)]^(4-)-[SiO_(4)]^(4-)substitution on the crystal structure,electronic structure,luminescence properties and thermal performance of LiGd_(9)(SiO_(4))6-x(GeO_(4))xO_(2):Dy^(3+)phosphors were studied in *** phases and microstructure were performed by using X-ray diffraction(XRD)Rietveld refinement method and scanning electron microscopy(SEm)*** substitution of smaller[SiO_(4)]^(4-)ions by larger[GeO_(4)]^(4-)ones makes their unit cell parameters increase gradually,and their band gaps *** photoluminescence spectra of LiGd_(9)(SiO_(4))6-x(GeO_(4))xO_(2):Dy^(3+)(0≤x≤3)exhibit obvious emission peaks located at 477,573 and 675 nm within a visible wavelength region,resulting in an excellent white ***,the I573nm/I477nm values of LiGd_(9)(SiO_(4))6-x(GeO_(4))xO_(2):Dy^(3+)(0≤x≤3)become larger with the partial substitution of[SiO_(4)]^(4-)by[GeO_(4)]^(4-),and their CIE chromaticity coordinates exhibit a yellow shift.

关键词： Apatite Structure substitution Electronic structure White emitting Rare earths

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