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Changes in calcium accumulation and utilization efficiency and their impact on recycling,immobilization,and export across the oil palm cycle

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Oil Crop Science 2024年第3期9卷 143-150页

作者： Ismael de Jesus Matos Viégas Luma Castro de Souza Eric Victor de Oliveira Ferreira Milton Garcia Costa Glauco André dos Santos Nogueira Vitor Resende do Nascimento Candido Ferreira de Oliveira Neto Capanema Campus Federal Rural University of the Amazon(UFRA)Av.Barao de CapanemaCaixa D'agua5514-6434ParaBrazil Center of Agricultural and Environmental Sciences Federal University of Maranhao(UFMA)ChapadinhaBR-222km 04SNBoa Vista65500000MaranhaoBrazilc Capitao Poço Campus Federal Rural University of the Amazon(UFRA)Tv.Pau AmareloS/n-Vila Nova68650-000Capitao PoçoParaBrazil Department of Soil Science Sao Paulo State University(Unesp)School of Agricultural and Veterinarian SciencesJaboticabalVia de Acesso Prof.Paulo Donato CastelaneCastellane-S/N-Vila Industrial14884-900Sao PauloBrazil Institute of Agricultural Sciences(ICA) Federal Rural University of the Amazon(UFRA)Estr.Principal da Ufra2150Curio-Utinga66077-580BelemParaBrazil

Effective calcium(Ca)management is crucial for optimizing oil palm cultivation and enhancing crop *** study aimed to gain insights into the dynamics of Ca concentration,accumulation,exportation,immobilization,and recycling in various oil palm organs relative to plant *** experiment was conducted at the Agropalma enterprise site in the northeastern region of Para State,Brazil,evaluating seven plant age treatments:2,3,4,5,6,7,and 8 years *** a completely randomized design with four *** results demonstrated an age-related increase in Ca concentration in petioles,rachis,arrows,male inflorescences,peduncles,and ***,Ca accumulation exhibited an upward trend in all organs with progressing plant ***,the study revealed an enhanced Ca use efficiency across all plant organs in correlation with the age of oil palm *** findings underscore the dynamic nutritional demands of oil palm,influencing Ca immobilization,cycling,and export throughout its developmental stages.

关键词： Elaeis guineensis Jacq Ca cycling Ca export Ca immobilization Ca use efficiency Plant nutrition Amazon

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Predicting 3D Radiotherapy dose-Volume Based on Deep Learning

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Intelligent Automation & Soft Computing 2024年第2期39卷 319-335页

作者： do Nang Toan Lam Thanh Hien Ha Manh Toan Nguyen Trong Vinh Pham Trung Hieu Institute of Information Technology Vietnam Academy of Science and TechnologyHanoi10072Vietnam Faculty of Information Technology Lac Hong UniversityBien HoaDong Nai76120Vietnam

Cancer is one of the most dangerous diseaseswith *** of the principal treatments is radiotherapy by using radiation beams to destroy cancer cells and this workflow requires a lot of experience and skill from doctors and *** our study,we focused on the 3D dose prediction problem in radiotherapy by applying the deeplearning approach to computed tomography(CT)images of cancer *** image data has more complex characteristics than normal image data,and this research aims to explore the effectiveness of data preprocessing and augmentation in the context of the 3D dose prediction *** proposed four strategies to clarify our hypothesis in different aspects of applying data preprocessing and *** strategies,we trained our custom convolutional neural network model which has a structure inspired by the U-net,and residual blocks were also applied to the *** output of the network is added with a rectified linear unit(Re-Lu)function for each pixel to ensure there are no negative values,which are absurd with radiation *** experiments were conducted on the dataset of the Open Knowledge-Based Planning Challenge which was collected from head and neck cancer patients treatedwith radiation *** results of four strategies showthat our hypothesis is rational by evaluating metrics in terms of the dose-score and the dose-volume histogram score(DVH-score).In the best training cases,the dose-score is 3.08 and the DVH-score is *** addition,we also conducted a comparison with the results of another study in the same context of using the loss function.

关键词： CT image 3D dose prediction data preprocessing augmentation

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Tuberculosis Diagnosis and Visualization with a Large Vietnamese X-Ray Image Dataset

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Intelligent Automation & Soft Computing 2024年第2期39卷 281-299页

作者： Nguyen Trong Vinh Lam Thanh Hien Ha Manh Toan Ngo Duc Vinh do Nang Toan Faculty of Information Technology Lac Hong UniversityBien HoaDong Nai76120Vietnam Institute of Information Technology Vietnam Academy of Science and TechnologyHanoi10072Vietnam Faculty of Information Technology Hanoi University of IndustryHanoi11915Vietnam

Tuberculosis is a dangerous disease to human life,and we need a lot of attempts to stop and reverse ***,in theCOVID-19 pandemic,access to medical services for tuberculosis has become very *** late detection of tuberculosis could lead to danger to patient health,even *** one of the countries heavily affected by the COVID-19 pandemic,andmany residential areas as well as hospitals have to be isolated for a long *** demands a fast and effective tuberculosis diagnosis solution to deal with the difficulty of accessingmedical services,such as an automatic tuberculosis diagnosis *** our study,aiming to build that system,we were interested in the tuberculosis diagnosis problem from the chest X-ray images of Vietnamese *** chest X-ray image is an important data type to diagnose tuberculosis,and it has also received a lot of attention from deep learning *** paper proposed a novel method for tuberculosis diagnosis and visualization using the deeplearning approach with a large Vietnamese X-ray image *** detail,we designed our custom convolutional neural network for the X-ray image classification task and then analyzed the predicted result to provide visualization as a *** prove the performance of our network model,we conducted several experiments to compare it to another study and also to evaluate it with the dataset of this *** support the implementation,we built a specific annotation system for tuberculosis under the requirements of radiologists in the Vietnam National Lung Hospital.A large experiment dataset was also from this hospital,and most of this data was for training the convolutional neural network *** experiment results were evaluated regarding sensitivity,specificity,and *** achieved high scores with a training accuracy score of 0.99,and the testing specificity and sensitivity scores were over *** on the X-ray image classification result,we visualize pr

关键词： Tuberculosis classification Vietnamese chest X-ray deep learning

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Functionally graded structure of a nitride-strengthened Mg_(2)Si-based hybrid composite

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Journal of Magnesium and Alloys 2024年第3期12卷 1239-1256页

作者： Jeongho Yang Woongbeom Heogh Hogi Ju Sukhyun Kang Tae-Sik Jang Hyun-do Jung Mohammad Jahazi Seung Chul Han Seong Je Park Hyoung Seop Kim Susmita Bose Amit Bandyopadhyay Martin Byung-Guk Jun Young Won Kim Dae-kyeom Kim Rigoberto CAdvincula Clodualdo Aranas Jr Sang Hoon Kim School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Department of Mechanical Design Engineering Hanyang UniversitySeoul 04763Republic of Korea Process Research 3 Team LG Display Co.Ltd.PajuGyeonggi-do 10845Republic of Korea Department of Materials Science and Engineering Chosun UniversityGwangju 61452Republic of Korea Institute of Well-Aging Medicare&Chosun University LAMP Center Chosun UniversityGwangju 61452Republic of Korea Division of Materials Science and Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Mechanical Engineering École de Technologie SupérieureMontrealQuebec H3C 1K3Canada Material&Component Convergence R&D Center Korea Construction Equipment Technology InstituteGunsanJeollabuk-do 54002Republic of Korea School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore Graduate Institute of Ferrous&Eco Materials Technology Pohang University of Science and TechnologyPohangGyeongsangbuk-do 37673Republic of Korea Advanced Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Institute for Convergence Research and Education in Advanced Technology Yonsei UniversitySeoul 03722Republic of Korea School of Mechanical and Materials Engineering Washington State UniversityPullmanWashington 99164USA School of Mechanical Engineering Purdue UniversityWest LafayetteIndiana 47907USA Research Institute of Advanced Manufacturing Technology Korea Institute of Industrial TechnologyIncheon 21999Republic of Korea Department of Macromolecular Science and Engineering Case Western Reserve UniversityClevelandOhio 44106USA Department of Chemical and Biomolecular Engineering and Joint Institute for Advanced Materials University of TennesseeKnoxvilleTennessee 37996USA Center for Nanophase Materials and Sciences Oak Ridge National LaboratoryOak RidgeTennessee 37830USA Department of Mechanical Engineering University of New BrunswickFrederictonNew Brunswick E3B 5A3Cana

The ex-situ incorporation of the secondary SiC reinforcement,along with the in-situ incorporation of the tertiary and quaternary Mg_(3)N_(2) and Si_(3)N_(4) phases,in the primary matrix of Mg_(2)Si is employed in order to provide ultimate wear resistance based on the laser-irradiation-induced inclusion of N_(2) gas during laser powder bed *** is substantialized based on both the thermal diffusion-and chemical reactionbased metallurgy of the Mg_(2)Si–SiC/nitride hybrid *** study also proposes a functional platform for systematically modulating a functionally graded structure and modeling build-direction-dependent architectonics during additive *** strategy enables the development of a compositional gradient from the center to the edge of each melt pool of the Mg_(2)Si–SiC/nitride hybrid ***,the coefficient of friction of the hybrid composite exhibits a 309.3%decrease to–1.67 compared to–0.54 for the conventional nonreinforced Mg_(2)Si structure,while the tensile strength exhibits a 171.3%increase to 831.5 MPa compared to 485.3 MPa for the conventional *** outstanding mechanical behavior is due to the(1)the complementary and synergistic reinforcement effects of the SiC and nitride compounds,each of which possesses an intrinsically high hardness,and(2)the strong adhesion of these compounds to the Mg_(2)Si matrix despite their small sizes and low concentrations.

关键词： Laser powder bed fusion Mg_(2)Si-SiC/nitride hybrid composite Both the thermal diffusion-and chemical reaction-based metallurgy Functionally graded structure Compositional gradient Wear resistance.

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拉恩氏菌诱导重金属磷酸盐沉淀及其在土壤中的活性变化特征

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吉林农业大学学报 2024年第4期46卷 625-632页

作者：刘思齐 do Hoaithuong 张春燕赵子郡李想龙振华吉林农业大学资源与环境学院长春130118

微生物可通过诱导形成磷酸盐沉淀来固定土壤中的有效态铅(Pb),在Pb污染土壤修复方面越来越受到人们的重视,但对其诱导的磷酸盐沉淀在土壤中的活性变化特征缺乏了解。研究了1株拉恩氏菌LRP3对单一Pb和Cu-Pb复合磷酸盐沉淀的诱导作用,并... 详细信息

微生物可通过诱导形成磷酸盐沉淀来固定土壤中的有效态铅(Pb),在Pb污染土壤修复方面越来越受到人们的重视,但对其诱导的磷酸盐沉淀在土壤中的活性变化特征缺乏了解。研究了1株拉恩氏菌LRP3对单一Pb和Cu-Pb复合磷酸盐沉淀的诱导作用,并通过土壤培养和盆栽试验研究了2种磷酸盐沉淀中的Pb在土壤中的释放及小白菜对其吸收特征。结果表明:菌株LRP3发酵液能够快速去除溶液中单一或与Cu^(2+)共存的Pb^(2+),分别诱导形成呈不规则块状的Pb(H_(2)PO_(4))_(2)晶体和小球形的Pb(H_(2)PO_(4))_(2)-Cu_(3)(PO_(4))_(2)复合晶体。短时土壤培养条件下,复合晶体中的Pb稳定性高,不易活化,而单一晶体中的Pb稳定性较差,容易活化,土壤微生物能够促进其活化。单一和复合磷酸盐晶体可在小白菜根际土壤中释放出Pb,增加小白菜叶子和根中Pb的含量,与对照土壤相比,小白菜叶子和根对Pb的富集系数分别下降了62.50%,78.75%和75.50%,83.75%。因此,菌株LRP3在Pb污染土壤修复方面有重要的应用价值,并且可通过向土壤中添加Cu^(2+)来强化修复效果。

关键词：磷酸盐沉淀拉恩氏菌 Pb 生物矿化稳定性生物修复技术

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Endodontic irrigants from a comprehensive perspective

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World Journal of Clinical Cases 2024年第21期12卷 4460-4468页

作者： Rayana Duarte Khoury Lara Steffany de Carvalho Mauro Felipe Rios do Nascimento Fadi Alhussain AmjadAbu Hasna Department of Restorative Dentistry Endodontics DivisionInstitute of Science and TechnologySão Paulo State UniversitySão Josédos Campos 12245000SPBrazil Department of Biosciences and Oral Diagnosis Institute of Science and TechnologySão Paulo State UniversitySão Josédos Campos 12245000SPBrazil School of Dentistry The National Institute of Higher Education and Postgraduate Studies Padre Gervásio-INAPÓSPouso Alegre 37550-121MGBrazil School of Dentistry Syrian Private UniversityAl Kiswah 877C+P2DamascusSyria School of Dentistry Universidad Espíritu SantoSamborondón 092301Ecuador

This review article explores the fundamental principles of modern endodontics with a focus on root canal cleaning and *** reviews commonly used endodontic irrigant,namely sodium hypochlorite(NaOCl),herbal extracts,chlorhexidine(CHX),and chelating agents,highlighting their properties,applications,and potential ***,a key antimicrobial agent,demonstrates effectiveness against various microorganisms but poses challenges such as high *** extracts,gaining recognition in endodontics,present an alternative with potential advantages in preserving dentin ***,known for its broad-spectrum antimicrobial activity,is discussed in both liquid and gel formulations,emphasizing its role in reducing smear layer formation and preserving hybrid layer *** agents,specifically ethylenediaminetetraacetic acid and citric acid,play a vital role in removing the smear layer,enhancing dentin permeability,and facilitating the penetration of antimicrobial *** review article underscores the importance of careful application and consideration of each irrigant's properties to ensure safe and effective endodontic *** serves as a valuable guide for clinicians in selecting appropriate irrigants based on specific treatment requirements.

关键词： Root canal irrigants Sodium hypochlorite Chlorhexidine Chelating agents Plant extracts

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Analysing vaccine efficacy evaluated in phase 3 clinical trials carried out during outbreaks

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Infectious Disease Modelling 2024年第4期9卷 1027-1044页

作者： Francisco Antonio Bezerra Coutinho Marcos Amaku Fernanda Castro Boulos Jose Alfredo de Sousa Moreira Joao Italo DiasFranca Julio Antonio do Amaral Eliana Nogueira Castro de Barros Claudio Jose Struchiner Esper Jorge Kallas Eduardo Massad School of Medicine University of Sao PauloBrazil Instituto Butantan Sao PauloBrazil School of Applied Mathematics Fundacao Getulio VargasRio de JaneiroBrazil

In this paper we examine several definitions of vaccine efficacy(VE)that we found in the literature,for diseases that express themselves in outbreaks,that is,when the force of infection grows in time,reaches a maximum and then *** fact that the disease occurs in outbreaks results in several problems that we *** propose a mathematical model that allows the calculation of VE for several *** trials usually needs a large number of volunteers that must be ***,all volunteers should be enrolled in approximately the same time,but this is generally impossible for logistic reasons and they are enrolled in a fashion that can be replaced by a continuous density function(for example,a Gaussian function).The outbreak can also be replaced by a continuous density function,and the use of these density functions simplifies the ***,for example Gaussian functions,one of the problems one can immediately notice is that the peak of the two curves do not occur at the same *** model allows us to conclude:First,the calculated vaccine efficacy decreases when the force of infection increases;Second,the calculated vaccine efficacy decreases when the gap between the peak in the force of infection and the peak in the enrollment rate increases;Third,different trial protocols can be simulated with this model;different vaccine efficacy definitions can be calculated and in our simulations,all result are approximately the *** final,and perhaps most important conclusion of our model,is that vaccine efficacy calculated during outbreaks must be carefully examined and the best way we can suggest to overcome this problem is to stratify the enrolled volunteer's in a cohort-by-cohort basis and do the survival analysis for each cohort,or apply the Cox proportional hazards model for each cohort.

关键词： Vaccine efficacy Clinical trials Mathematical models Simulations Covid-19

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Localized-states quantum confinement induced by roughness in CdMnTe/CdTe heterostructures grown on Si(111) substrates

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Journal of Semiconductors 2024年第9期 34-42页

作者： Leonarde do Nascimento Rodrigues Wesley Fiorio lnoch Marcos L.F.Gomes Odilon D.D.Couto Jr. Bráulio S.Archanjo Sukarno Olavo Ferreira Physics Department Federal University of Vi?osa Instituto de Física Gleb Wataghin Universidade Estadual de Campinas National Institute of Metrology Quality and Technology (Inmetro) Materials Metrology Division (DIMAT)

This work shows that despite a lattice mismatch of almost 20%, CdMnTe/CdTe/CdMnTe heterostructures grown directly on Si(111) have surprisingly good optical emission properties. The investigated structures were grown by molecular beam epitaxy and characterized by scanning transmission electron microscopy, macro-and micro-photoluminescence. Low temperature macro-photoluminescence experiments indicate three emission bands which depend on the CdTe layer thickness and have different confinement characteristics. Temperature measurements reveal that the lower energy emission band (at 1.48 eV)is associated to defects and bound exciton states, while the main emission at 1.61 eV has a weak 2D character and the higher energy one at 1.71 eV has a well-defined (zero-dimensional, 0D) 0D nature. Micro-photoluminescence measurements show the existence of sharp and strongly circularly polarized (up to 40%) emission lines which can be related to the presence of Mn in the heterostructure. This result opens the possibility of producing photon sources with the typical spin control of the diluted magnetic semiconductors using the low-cost silicon technology.

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数字经济时代美育课程的建设路径

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山西财经大学学报 2024年第S1期46卷 223-225页

作者：邱涛麦宸多呼和浩特职业学院内蒙古呼和浩特010000 日本名古屋艺术大学日本名古屋451-0031

随着科学技术的迅猛发展和数字化的普及,人们的生活方式和教育方式都发生了巨大的变化。新时代下,数字技术不仅创新了美育教学的形式,还为美育的持续发展、美育人才培养提供了广阔空间。本文分析了数字经济对美育课程的影响,探讨了数字... 详细信息

随着科学技术的迅猛发展和数字化的普及,人们的生活方式和教育方式都发生了巨大的变化。新时代下,数字技术不仅创新了美育教学的形式,还为美育的持续发展、美育人才培养提供了广阔空间。本文分析了数字经济对美育课程的影响,探讨了数字经济时代美育课程存在的问题,进一步指出传统美育课程在数字化环境下面临的挑战,最后提出数字经济时代美育课程的建设路径。

关键词：数字经济时代美育课程建设路径

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侧孢短芽孢杆菌ZN5对土壤中含铅碳酸盐沉淀的诱导及其稳定性研究

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吉林农业大学学报 2024年第4期46卷 633-641页

作者：赵子郡李明堂李想 do Hoaithuong 龙振华王雨琦吴迪吉林农业大学资源与环境学院长春130118

微生物可通过诱导形成碳酸盐沉淀来固定土壤中的有效态Pb,在Pb污染土壤修复方面越来越受到人们的重视。通过对1株侧孢短芽孢杆菌ZN5的氨化和硝酸盐同化发酵液对土壤中Pb的碳酸盐固定作用,及其诱导的碳酸盐沉淀在土壤中的稳定性进行研究... 详细信息

微生物可通过诱导形成碳酸盐沉淀来固定土壤中的有效态Pb,在Pb污染土壤修复方面越来越受到人们的重视。通过对1株侧孢短芽孢杆菌ZN5的氨化和硝酸盐同化发酵液对土壤中Pb的碳酸盐固定作用,及其诱导的碳酸盐沉淀在土壤中的稳定性进行研究。结果表明:菌株ZN5的氨化和硝酸盐同化发酵液使土壤可交换态Pb含量分别降低20.28%和17.38%,有机物结合态Pb含量占比分别降低5.65%和3.76%,残渣态Pb含量占比分别降低4.28%和2.35%,碳酸盐结合态Pb比例分别增加28.93%和21.92%,铁锰氧化物结合态Pb含量占比分别增加1.17%和0.66%,导致土壤有效态Pb含量分别降低了71.50%和62.30%,从而使得小白菜在Pb含量为980.77 mg/kg的重污染土壤中能够正常生长。菌株ZN5通过氨化和硝酸盐同化过程诱导的2种含Pb碳酸盐沉淀加入到土壤中,即使土壤总Pb含量约500 mg/kg,小白菜的生长虽然受到一定的影响,但对Pb的富集系数有大幅度地下降。说明菌株ZN5可通过氨化和硝酸盐同化过程诱导形成含Pb碳酸盐沉淀来固定土壤中的有效态Pb,从而降低Pb对小白菜的毒性,并且通过硝酸盐同化过程诱导的含Pb碳酸盐沉淀在土壤中的稳定性更好,在Pb污染土壤修复方面有重要的应用价值。

关键词：侧孢短芽孢杆菌土壤 Pb 碳酸盐沉淀微生物诱导稳定性

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