检索结果-南通市图书馆

An investigation on the best-fit models for sugarcane biomass estimation by linear mixedeffect modelling on unmanned aerial vehicle-based multispectral images:A case study of Australia

引用

Information Processing in Agriculture 2023年第3期10卷 361-376页

作者： sharareh akbarian Chengyuan Xu Weijin Wang Stephen Ginns Samsung Lim School of Civil and Environmental Engineering University of New South WalesSydney 2052Australia School of Health Medical and Applied SciencesCentral Queensland UniversityBundaberg 4670Australia Science&Technology Division Department of Environment and ScienceQueensland 4017Australia Queensland Department of Agriculture and Fisheries Brisbane 4000Australia

Due to the worldwide population growth and the increasing needs for sugar-based products,accurate estimation of sugarcane biomass is critical to the precise monitoring of sugarcane *** research aims to find the imperative predictors correspond to the random and fixed effects to improve the accuracy of wet and dry sugarcane biomass estimations by integrating ground data and multi-temporal images from Unmanned Aerial Vehicles(UAVs).The multispectral images and biomass measurements were obtained at different sugarcane growth stages from 12 plots with three nitrogen fertilizer *** spectral bands and different combinations of the plots,growth stages,and nitrogen fertilizer treatments were investigated to address the issue of selecting the correct fixed and random effects for the modelling.A model selection strategy was applied to obtain the optimum fixed effects and their proportional *** results showed that utilizing Green,Blue,and Near Infrared spectral bands on models rather than all bands improved model performance for wet and dry biomass ***,the combination of plots and growth stages outperformed all the candidates of random *** proposed model outperformed the Multiple Linear Regression(MLR),Generalized Linear Model(GLM),and Generalized Additive Model(GAM)for wet and dry sugarcane biomass,with coefficients of determination(R2)of 0.93 and 0.97,and Root Mean Square Error(RMSE)of 12.78 and 2.57 t/ha,*** study indicates that the proposed model can accurately estimate sugarcane biomasses without relying on nitrogen fertilizers or the saturation/senescence problem of Vegetation Indices(VIs)in mature growth stages.

关键词： Sugarcane biomass estimation Unmanned Aerial Vehicle(UAV) Random effects Nitrogen fertilizer treatment Model selection Vegetation Index(VI)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Effect of Spironolactone Loading on the Properties of 3D-Printed Polycaprolactone/Gold Nanoparticles Composite Scaffolds for Myocardial Tissue Engineering

引用

Journal of Bionic Engineering 2024年第2期21卷 924-937页

作者： sharareh Ghaziof Shahrokh Shojaei Mehdi Mehdikhani Mohammad Khodaei Milad Jafari Nodoushan Department of Biomedical Engineering Central Tehran BranchIslamic Azad UniversityTehran***Iran Stem Cells Research Center Tissue Engineering and Regenerative Medicine InstituteCentral Tehran BranchIslamic Azad UniversityTehran***Iran Department of Biomedical Engineering Faculty of EngineeringUniversity of IsfahanIsfahan***Iran Materials Engineering Group Golpayegan College of EngineeringIsfahan University of TechnologyGolpayegan87717-67498Iran Hard Tissue Engineering Research Center Tissue Engineering and Regenerative Medicine InstituteCentral Tehran BranchIslamic Azad UniversityTehran***Iran

Engineered cardiac constructs(ECC)aid in the progression of regenerative medicine,disease modeling and targeted drug delivery to adjust and aim the release of remedial combination as well as decrease the side effects of *** this research,polycaprolactone/gold nanoparticles(PCL/GNPs)three-dimensional(3D)composite scaffolds were manufactured by 3D printing using the fused deposition modeling(FDM)method and then coated with gelatin/spironolactone(GEL/SPL).Scanning electron microscopy(SEM)and Fourier transform-infrared spectroscopy(FTIR–ATR)were applied to characterize the ***,drug release,biodegradation,behavior of the myoblasts(H9C2)cell line,and cytotoxicity of the 3D scaffolds were *** microstructural observation of the scaffolds reported interconnected pores with 150–300µm in *** 3D scaffolds were degraded significantly after 28 days of immersion in stimulated body fluid(SBF),with the maximum rate of GEL-coated 3D *** release from cross-linked GEL coating demonstrated the excess of drug release over time,and according to the control release systems,the drug delivery systems(DDS)went into balance after the 14th *** addition,cell culture study showed that with the addition of GNPs,the proliferation of(H9C2)was enhanced,and with GEL/SPL coating the cell attachment and viability were improved *** findings suggested that PCL/GNPs 3D scaffolds coated with GEL/SPL can be an appropriate choice for myocardial tissue engineering.

关键词： Polycaprolactone Gold nanoparticles Drug delivery systems Spironolactone Cell behavior Myoblasts

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

SOLUBLE POLYIMIDES FROM A SEMI-ALIPHATIC DIAMINE CONTAINING ESTER,AMIDE AND ETHER GROUPS

引用

Chinese Journal of Polymer Science 2011年第1期29卷 93-100页

作者： Shahram Mehdipour-Ataei Leila akbarian-Feizi Iran Polymer and Petrochemical Institute P.O.Box 14965/115TehranIran

A diamine was synthesized by two successive reactions. Nucleophilic reaction of 4-hydroxybenzoic acid with terephthaloyl chloride yielded terephthaloyl bis（4-oxybenzoic） acid. Then reaction of this compound with 1,8-diamino-3,6- dioxaoctane via Yamazaki method resulted in preparation of diamine named terephthalic acid bis（4-{2-[2-（2-amino ethoxy）ethoxy]ethyl carbamoyl}phenyl） ester. After fully characterization it was used to prepare new polyimides through polycondensation with different dianhydrides using trimethylchlorosilane. Characterization of polymers was achieved by common methods and their physical properties including inherent viscosity, thermal behavior, thermal stability, crystallinity and solubility were studied. Prepared polyimides showed improved solubility and good thermal stability.

关键词： Polyimide Polycondensation Synthesis Thermal properties

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Overall profit Malmquist productivity index under data uncertainty

引用

Financial Innovation 2020年第1期6卷 109-128页

作者： Dariush akbarian Department of Mathematics Arak BranchIslamic Azad UniversityArakIran

The calculation of the overall profit Malmquist productivity index(MPI)requires precise and accurate information on the input,output,input-output prices of each decision making unit(DMU).However,in many situations,some inputs and/or outputs and input-output prices are *** such,we consider the overall profit MPI problem when the input,output,and input-output prices are imprecise and vary over intervals,showing that method(MCM 54:2827–2838,2011)has some *** remedy these shortfalls,we propose another method for measuring the overall profit MPI when the inputs,outputs,and price vectors vary over *** is,to calculate the overall profit efficiency intervals,cone-ratio data envelopment analysis models can be applied to the incorporated information as weight ***,we provide a new approach to calculating the upper bound of the overall profit efficiency of each DMU.A numerical example is provided for illustrating the proposed method.

关键词： Data envelopment analysis Imprecise data Profit Malmquist productivity index

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Life cycle assessment of oxygen-18 production using cryogenic oxygen distillation

引用

Chinese Journal of Chemical Engineering 2018年第9期26卷 1960-1966页

作者： Meysam akbarian Shourkaei Abbas Rashidi Javad Karimi-Sabet Faculty of Engineering University of Mazandaran Material and Nuclear Fuel Research School (MNFRS) Nuclear Science and Technology Research Institute

In this study, life cycle assessment of oxygen-18 by using cryogenic distillation of oxygen is performed using SimaPro 8.3 software. Life cycle assessment is performed to understand the environmental profile and hotspots of this process in order to be used in design and development. Simulation of oxygen-18 process is executed by Hysys software, and the required inputs and outputs for inventory of life cycle were acquired. By doing life cycle assessment and considering achieved results after characterization and normalization of inventory data it has been investigated that in the majority of environmental impacts electricity consumption has a huge contribution relative to other parts of the system like liquefied oxygen production from air separation unit,required facilities for air separation and oxygen-18 units, and needed transportation. Also, among 17 impact categories investigated in ReCiPe impact assessment method, fossil depletion, climate change(human health),particulate matter formation, climate change(ecosystem), human toxicity, and metal depletion have the most contribution in entire environmental loads respectively. Furthermore, sensitivity analysis showed that changing life cycle impact assessment method from ReCiPe to IMPACT 2002+ has no significant effect on acquired results and results are confident. In addition, assumption of market for depleted oxygen from heavy isotopes which is withdrawn from top of distillation columns showed some positive effects compared to first case and environmental impacts resulted from liquefied oxygen production(feed) reduced but because of huge contribution of electricity consumption compared to other sections, this positive effect has no remarkable influence on entire environmental loads of product system.

关键词： Life cycle assessment Oxygen- 18 production Cryogenic distillation Isotope separation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Therapeutic approaches for corneal neovascularization

引用

Eye and Vision 2017年第1期4卷 164-173页

作者： Sepehr Feizi Amir A.Azari sharareh Safapour Ophthalmic Research Center Labbafinejad Medical CenterShahid Beheshti University of Medical SciencesTehran 16666Iran

Angiogenesis refers to new blood vessels that originate from pre-existing vascular *** neovascularization which can lead to compromised visual acuity occurs in a wide variety of corneal pathologies.A large subset of measures has been advocated to prevent and/or treat corneal neovascularization with varying degrees of *** approaches include topical corticosteroid administration,laser treatment,cautery,and fine needle *** the imbalance between proangiogenic agents and antiangiogenic agents primarily mediate the process of corneal neovascularization,recent therapies are intended to disrupt the different steps in the synthesis and actions of proangiogenic *** approaches,however,are only partially effective and may lead to several side *** aim of this article is to review the most relevant treatments for corneal neovascularization available so far.

关键词： Corneal neovascularization Angiogenesis Angiogenic therapies

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Association between heat stress and oxidative stress in poultry;mitochondrial dysfunction and dietary interventions with phytochemicals

引用

Journal of Animal Science and Biotechnology 2017年第1期8卷 1-14页

作者： Abdollah akbarian Joris Michiels Jeroen Degroote Maryam Majdeddin Abolghasem Golian Stefaan De Smet Department of Animal Production Laboratory for Animal Nutrition and Animal Product QualityGhent UniversityProefhoevestraat 10Melle 9090Belgium Centre of Excellence in the Animal Science Department Ferdowsi University of MashhadP.O.Box:91775-1163MashhadIran Department of Applied Biosciences Ghent UniversityValentin Vaerwyckweg 1Ghent 9000Belgium

Heat as a stressor of poultry has been studied extensively for many decades; it affects poultry production on a worldwide basis and has significant impact on well-being and production. More recently, the involvement of heat stress in inducing oxidative stress has received much interest. Oxidative stress is defined as the presence of reactive species in excess of the available antioxidant capacity of animal cells. Reactive species can modify several biologically cellular macromolecules and can interfere with cell signaling pathways. Furthermore, during the last decade, there has been an ever-increasing interest in the use of a wide array of natural feed-delivered phytochemicals that have potential antioxidant properties for poultry. In light of this, the current review aims to（1） summarize the mechanisms through which heat stress triggers excessive superoxide radical production in the mitochondrion and progresses into oxidative stress,（2） illustrate that this pathophysiology is dependent on the intensity and duration of heat stress,（3） present different nutritional strategies for mitigation of mitochondrial dysfunction, with particular focus on antioxidant *** stress that occurs with heat exposure can be manifest in all parts of the body; however, mitochondrial dysfunction underlies oxidative stress. In the initial phase of acute heat stress, mitochondrial substrate oxidation and electron transport chain activity are increased resulting in excessive superoxide production. During the later stage of acute heat stress, down-regulation of avian uncoupling protein worsens the oxidative stress situation causing mitochondrial dysfunction and tissue damage. Typically, antioxidant enzyme activities are upregulated. Chronic heat stress, however, leads to downsizing of mitochondrial metabolic oxidative capacity, up-regulation of avian uncoupling protein, a clear alteration in the pattern of antioxidant enzyme activities, and depletion of antioxidant reserve

关键词： Antioxidant enzymes Avian uncoupling protein Electron transport chain Flavonoids Heat Stress Mitochondrion Oxidative stress Poultry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Network DEA based on DEA‑ratio

引用

Financial Innovation 2021年第1期7卷 1919-1944页

作者： Dariush akbarian Department of Mathematics Arak BranchIslamic Azad UniversityArakIran

Data envelopment analysis(DEA)is a technique to measure the performance of decision-making units(DMUs).Conventional DEA treats DMUs as black boxes and the internal structure of DMUs is ***-stage DEA models are special case network DEA models that explore the internal structures of *** often,one output cannot be produced by certain input data and/or the data may be expressed as ratio output/*** these cases,traditional two-stage DEA models can no longer be *** deal with these situations,we applied DEA-Ratio(DEA-R)to evaluate two-stage DMUs instead of traditional *** this end,we developed two novel DEA-R models,namely,range directional DEA-R(RDD-R)and(weighted)Tchebycheff norm DEA-R(TND-R).The validity and reliability of our proposed approaches are shown by some *** Taiwan Residents non-life insurance companies are revisited using these proposed approaches and the results from the proposed methods are compared with those from some other methods.

关键词： Data envelopment analysis DEA-R Two-stage DEA

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Ranking Method of Extreme Efficient DMUs Using Super-Efficiency Model

引用

Journal of Applied Mathematics and Physics 2013年第1期1卷 1-4页

作者： Dariush akbarian Department of Mathematics Arak Branch Islamic Azad University Arak Iran

In this paper, we present a method for ranking extreme efficient decision making units (DMUs) in data envelopment analysis (DEA) models based on measuring distance between them and new PPS (after omission extreme effi... 详细信息

关键词： Data Envelopment Analysis Efficiency Ranking

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An algorithm for the anchor points of the PPS of the BCC model

引用

Financial Innovation 2022年第1期8卷 2368-2381页

作者： Dariush akbarian Ali Akbar Bani Mohsen Rostamy-Malkhalifeh Farhad Hosseinzadeh Lotfi Department of Mathematics Arak BranchIslamic Azad UniversityArakIran Department of Mathematics Gorgan BranchIslamic Azad UniversityGorganIran Department of Mathematics Science and Research BranchIslamic Azad UniversityTehranIran

Anchor points play an important role in data envelopment analysis theory and applications;they delineate the efficient part of the production possibility set(PPS)*** this paper,we propose an approach for finding the anchor points of the PPS of the Banker,Charnes and Cooper(BCC)*** approach is based on a variant of super-efficiency models and their *** necessary and sufficient conditions for the characterization of the anchor points are also ***,the applicability of the proposed model is illustrated with some numerical examples.

关键词： Data envelopment analysis(DEA) Anchor point Production Possibility Set(PPS) Efficient and inefficient boundary

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：