Iranian Journal of Science and Technology, Transactions A: Science最新文献_第5页

Radii of Starlikeness and Convexity of Barnes G-Function Barnes - g函数的星形半径和凸度

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-21 DOI: 10.1007/s40995-025-01788-z

Samanway Sarkar, Sourav Das

引用次数: 0

Eigenfunction Expansions for Singular Impulsive Dynamic Dirac Systems 奇异脉冲动态Dirac系统的特征函数展开式

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-18 DOI: 10.1007/s40995-025-01783-4

Bilender P. Allahverdiev, Hüseyin Tuna, Hamlet A. Isayev

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Exploring Neimark-Sacker Bifurcation and Chaos Control in a Tri-species Discrete-Time Model 三种离散时间模型的neimmark - sacker分岔与混沌控制研究

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-18 DOI: 10.1007/s40995-025-01790-5

Sujay Goldar, Sk. Sarif Hassan, Krishna Pada Das, Ahmed A. Mohsen, Dahlia Khaled Bahlool, Qasem Al-Mdallal, Sourav Rana, Vikas Gupta, Purnendu Sardar

引用次数: 0

A Novel Approach for the Synthesis of V2O5 Thin Films Coating by Sol–Gel Technique for Anti-Corrosive Applications 溶胶-凝胶法制备V2O5防腐薄膜涂层的新方法

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-11 DOI: 10.1007/s40995-024-01766-x

S. Nishath Tharanum, H. M. Parveez Ahmed, Shabanabanu, P. Beena, Sahebgouda Jambaladinni, B. M. Prasanna, M. V. Santhosh Kumar, M. R. Jagadeesh

{"title":"A Novel Approach for the Synthesis of V2O5 Thin Films Coating by Sol–Gel Technique for Anti-Corrosive Applications","authors":"S. Nishath Tharanum, H. M. Parveez Ahmed,  Shabanabanu, P. Beena, Sahebgouda Jambaladinni, B. M. Prasanna, M. V. Santhosh Kumar, M. R. Jagadeesh","doi":"10.1007/s40995-024-01766-x","DOIUrl":"10.1007/s40995-024-01766-x","url":null,"abstract":"<div><p>The thin films of Vanadium Pentoxide nanoparticles (V<sub>2</sub>O<sub>5</sub>) were deposited on an Aluminium alloy-6061 (Al-6061) substrate by Sol–gel process through a spin coating technique. The film’s phase, purity, crystal nature, surface morphology, and elemental mapping of V<sub>2</sub>O<sub>5</sub> thin film on Al-6061 substrate were obtained via X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray analysis. They also examined their anticorrosive properties through the weight loss method, electrochemical measurements such as Potentiodynamic Polarization, and Electrochemical Impedance Spectroscopic studies under various environments by immersing the substrate in acid chloride, acid sulfate, acid nitrate, and neutral chloride medium at room temperature. The obtained results reflect the improvement in the surface property against the corrosion in terms of corrosion resistance of the V<sub>2</sub>O<sub>5</sub> thin film-coated Al-6061 substrate compared to that of the bare substrate.</p></div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"49 3","pages":"655 - 665"},"PeriodicalIF":1.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Qualitative Analysis of a Fractional-Order for a Within-Host Infection Dynamics with Adaptive Immunity Using Caputo Derivative 用Caputo导数定性分析具有适应性免疫的宿主内感染动力学的分数阶

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-05 DOI: 10.1007/s40995-024-01768-9

Marya Sadki, Zakaria Yaagoub, Karam Allali

{"title":"Qualitative Analysis of a Fractional-Order for a Within-Host Infection Dynamics with Adaptive Immunity Using Caputo Derivative","authors":"Marya Sadki, Zakaria Yaagoub, Karam Allali","doi":"10.1007/s40995-024-01768-9","DOIUrl":"10.1007/s40995-024-01768-9","url":null,"abstract":"<div><p>The objective of this paper is to introduce and study a within-host viral infection model via both modes of viral transmission mechanism; virus-to-cell and cell-to-cell. The proposed model incorporates the role of adaptive immunity in limiting viral pathogen spread, including humoral and cellular immune responses. This paper focuses on describing the long memory effect using the Caputo derivative. This study begins with the investigation of the well-posedness of our mathematical model concerning demonstrating the existence, positivity and boundedness of solutions. Then, it moves to introduce all the problem’s steady states, which are determined by specific reproduction numbers. Subsequently, the work proceeds to demonstrate the global stability of the five equilibria points. To evaluate the theoretical findings of global stability, we employ a numerical technique based on the fundamental theorem of fractional calculus, in addition to utilizing a three-step Lagrange polynomial interpolation method. Numerical simulations have shown the effect of drug therapies on the dynamical behavior of the fractional-order system.</p></div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"49 3","pages":"847 - 869"},"PeriodicalIF":1.4,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-Field Quintessential Higgs Model and the Swampland 双场典型希格斯模型和沼泽

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-05 DOI: 10.1007/s40995-025-01777-2

Mehdi Es-haghi, Moslem Zarei, Ahmad Sheykhi

引用次数: 0

Scalable Fusion Frames 可扩展融合框架

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-04 DOI: 10.1007/s40995-024-01765-y

Asghar Rahimi, Samrand Moayyadzadeh

引用次数: 0

Palladium Nanoparticles Supported on Guanidine-Modified Reduced Graphene Oxide as a Photocatalyst of Hydrogen Generation from Water Splitting 胍修饰的还原氧化石墨烯负载钯纳米粒子作为水裂解制氢光催化剂

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-04 DOI: 10.1007/s40995-025-01787-0

Mahdi Ghanbari, Sajjad Keshipour, Fatemeh Ahour

{"title":"Palladium Nanoparticles Supported on Guanidine-Modified Reduced Graphene Oxide as a Photocatalyst of Hydrogen Generation from Water Splitting","authors":"Mahdi Ghanbari, Sajjad Keshipour, Fatemeh Ahour","doi":"10.1007/s40995-025-01787-0","DOIUrl":"10.1007/s40995-025-01787-0","url":null,"abstract":"<div><p>Concerns about hazardous of fossil fuels for the life of thousands creatures is an enough motivation to many of researchers to work on production of hydrogen as a green fuel. Amongst various methods to generate hydrogen, photocatalytical hydrogen evolution from water splitting is considered as an invaluable approach since enjoys free sources of energy and material. To synthesis an efficient photocatalyst, a common semiconductor of nitrogen-doped reduced graphene oxide was synthesized by an absolutely simple method, including thermal treatment of citric acid and guanidine. Guanidine provides best spatial arrangement of nitrogen atoms to anchor with a transition metal catalyst, for instance palladium nanoparticles in this research. Palladium nanoparticles supported on nitrogen-doped reduced graphene oxide promoted the water splitting with the turnover frequency of hydrogen generation 306 h<sup>-1</sup> at room temperature. Easy synthesis of the photocatalyst, high yield, additive-free reaction, mild conditions, and re-usability of the photocatalyst are some advantages of the present approach.</p></div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"49 4","pages":"935 - 941"},"PeriodicalIF":1.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drug Repurposing for COVID 19 针对COVID - 19的药物再利用

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-04 DOI: 10.1007/s40995-024-01763-0

Fahmida Minna, Maya Mohan

{"title":"Drug Repurposing for COVID 19","authors":"Fahmida Minna, Maya Mohan","doi":"10.1007/s40995-024-01763-0","DOIUrl":"10.1007/s40995-024-01763-0","url":null,"abstract":"<div><p>Drug discovery is a distinctive method of testing a drug before medical use, which is a vital step before drug development. Targets are proteins in the human cells. The drug compounds interact with the target, which helps to cure diseases of human beings. One of the most important areas of research in the field of drugs discovery is drug–target interaction (Öztürk et al. in Bioinformatics 34(17):i821–i829, 2018). It identifies interactions between proteins and targets in the human body and the chemical compounds in drugs. Several resources were wasted in terms of the cost and the time spent on research laboratory experiments to find the drug discovery. It is essential for drug discovery to make accurate predictions of drug–target interactions (DTI). A recent study found that deep learning (DL) models perform well at predicting DTI. Here now introduce Deep Purpose, an extensive and user-friendly DL library for DTI prediction. Drug repurposing is a technique for expanding or improving the use of a current drug or creating new uses for current drugs. In this case, gave pre-existing medications for the SARS CoV2 3CL protease repurposing method. The results were the ratings for each drug’s binding affinity to the SARS CoV2 3CL protease inhibitor. Building a machine learning regression model using the SARS CoV2 3CL protease inhibitor’s ChEMBL bioactivity data is also possible. It is to discover a drug’s bioactivity information for its possible effectiveness against a virus.</p></div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"49 2","pages":"319 - 330"},"PeriodicalIF":1.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A New Approximation Method for Solving Stochastic Differential Equations 求解随机微分方程的一种新的近似方法

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-02-04 DOI: 10.1007/s40995-025-01778-1

Faezeh Nassajian Mojarrad

引用次数: 0