Iranian Journal of Science and Technology, Transactions A: Science最新文献_第6页

Conditions Which Imply a Banach Algebra is Finite Dimensional 意味着巴拿赫代数是有限维的条件

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-25 DOI: 10.1007/s40995-024-01662-4

G. H. Esslamzadeh, A. sahami, F. Taleghani

引用次数: 0

Eigenvalues of Generalized Shift Operators Over (ell ^p(tau )) Spaces $$ell ^p(tau)$$空间上广义移位算子的特征值

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-24 DOI: 10.1007/s40995-024-01631-x

Mahin Hajiabootorabi, Mohammad Reza Mardanbeigi

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(q-)Bézier Curves with Shifted Nodes 具有偏移节点的 $$q-$ 贝塞尔曲线

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-20 DOI: 10.1007/s40995-024-01653-5

Jaspreet Kaur, Meenu Goyal

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Synthesis, Characterization, Theoretical Studies and BSA Binding Of Co(II), Ni(II) and Cu(II) Schiff Base Complexes Co(II)、Ni(II) 和 Cu(II) 希夫碱配合物的合成、表征、理论研究和 BSA 结合

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-15 DOI: 10.1007/s40995-024-01641-9

Deepak Tomar, Madhuri Chaurasia, Yashankita Raghuvanshi, Renu Swami, Swarita Gopal, Aruna Chhikara, Sulekh Chandra

{"title":"Synthesis, Characterization, Theoretical Studies and BSA Binding Of Co(II), Ni(II) and Cu(II) Schiff Base Complexes","authors":"Deepak Tomar, Madhuri Chaurasia, Yashankita Raghuvanshi, Renu Swami, Swarita Gopal, Aruna Chhikara, Sulekh Chandra","doi":"10.1007/s40995-024-01641-9","DOIUrl":"10.1007/s40995-024-01641-9","url":null,"abstract":"<div>Complexes of Co(II), Ni(II), and Cu(II) complexes have been synthesized with biologically active Schiff base ligand L. The structure of ligand L and metal complexes were established by using various spectroscopic studies. On the basis of various spectroscopic studies, octahedral geometry of Co(II) complexes, tetrahedral geometry of Ni(II) complex, and square planar geometry of Cu(II) were established. Molar conductance in dimethylformaide solvent found in the range of 7.5–9.8 Ω−1 cm2 mol−1 suggesting the non-electrolyte behaviour of metal complexes. The value of nephelauxetic parameter (β) lies in the range of 0.254–0.586 which indicates the covalent character in metal ligand sigma bond. The dipole moment, chemical hardness, and chemical softness of L and its metal complexes were studied using DFT. Ligand L and metal complexes were screened against two gram’s positive bacterial species Staphylococcus aureus, Streptococcus pyogenes and two gram’s negative bacterial species Escherichia coli and Klebsiella pneumonia. Antibacterial activity results revealed that all metal complexes showed better activity than the free ligand and complex 2 showed better activity than other complexes. The Kb b values for complex 2 is 8.1545 × 105,which is greater than complex 3 and 4. It’s indicated that there is strong interaction between the BSA and complex 2. In molecular docking studies, complex 2 has returned lower docking energy than other complexes. It means theoretical studies have good coorelation with experimental results.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"48 5","pages":"1161 - 1174"},"PeriodicalIF":1.4,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507512","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}

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Dynamical Analysis of Fractional-Order Bazykin’s Model with Prey Refuge, Gestation Delay and Density-Dependent Mortality Rate 具有猎物避难所、妊娠延迟和密度相关死亡率的分数阶巴兹金模型的动力学分析

IF 1.7 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-15 DOI: 10.1007/s40995-024-01658-0

G. Ranjith Kumar, K. Ramesh

{"title":"Dynamical Analysis of Fractional-Order Bazykin’s Model with Prey Refuge, Gestation Delay and Density-Dependent Mortality Rate","authors":"G. Ranjith Kumar, K. Ramesh","doi":"10.1007/s40995-024-01658-0","DOIUrl":"https://doi.org/10.1007/s40995-024-01658-0","url":null,"abstract":"The motivation of the present study is to investigate the impact of memory in the framework of ecology employing a Caputo-type fractional-order derivative by means of a fractional-order ecological model that incorporates delay and prey refuge treatment effects. The model’s solutions are shown to exist, to be unique, and to be bounded. The behaviour of various equilibrium points with the memory effect is then examined, and certain necessary requirements are deduced to guarantee the global asymptotic stability of co-existing equilibrium points. Additionally, we looked into the possibility of Hopf bifurcation in relation to the delay parameter, which serves as the suggested system’s bifurcation parameter. This paper’s main contribution is the explanation of the fractional order model’s derivation in terms of the memory impact on population growth, and the application of the Caputo derivative with equal dimensionality to models that include memory. This fractional-order system with unknown dynamics is subject to control chaos, which is addressed by using Bazykin’s prey-predator model. The suggested model is new in that it highlights the importance of the memory effect, which encompasses prey refuge, latency, and predator death rate based on density. We run numerical simulations with various memory parameter, latency, and prey refuge values. Based on the numerical data, it seems that the system is behaving more like a chaotic system with an increasing memory effect, or stable behaviour from a time of chaos.","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"25 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507513","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

Nanoclay Montmorillonite-Cross-linked Starch as an Efficient Tool for the Controlled Release of Doxorubicin to Cancerous Cells 纳米粘土蒙脱石-交联淀粉作为向癌细胞控释多柔比星的有效工具

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-12 DOI: 10.1007/s40995-024-01622-y

Masoumeh Mosharafian, Mohammad Sadeghi, Ahmad Reza Massah

{"title":"Nanoclay Montmorillonite-Cross-linked Starch as an Efficient Tool for the Controlled Release of Doxorubicin to Cancerous Cells","authors":"Masoumeh Mosharafian, Mohammad Sadeghi, Ahmad Reza Massah","doi":"10.1007/s40995-024-01622-y","DOIUrl":"10.1007/s40995-024-01622-y","url":null,"abstract":"<div>Design and synthesis of novel carriers with properties for controlled release of drugs is an aim for reducing the side effects of the medicines. In this paper, a novel hydrogel is fabricated based on nanoclay montmorillonite-crosslinked starch for the controlled delivery of doxorubicin (DOX) to cancerous cells. The hydrogel is fabricated by the functionalization of starch with methyl methacrylate monomers, followed by cross-linking with methylene bisacrylamide by using nanoclay montmorillonite additive. The composite is characterized by several characterization techniques, including nuclear magnetic resonance and Fourier-transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, and thermogravimetric analysis. After the characterization of nanoclay montmorillonite-crosslinked starch nanocomposite, the fabricated hydrogel was evaluated in the delivery of DOX to the cancerous cells. After loading DOX into the hydrogel, the release profile of the drug was obtained in PBS buffer (pH = 7.4). Hemolysis studies proved the compatibility of the hydrogel in red blood cells. Cytotoxicity of DOX-loaded hydrogel was studied against T47D and LNCap cell lines. Cytotoxicity studies showed the activity and applicability of nanoclay montmorillonite-crosslinked starch composite for delivery purposes.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"48 4","pages":"835 - 842"},"PeriodicalIF":1.4,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141517816","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

Production Cross-section and Reaction Yield of $$^{76}$$ Br for $$^{Nat}$$ Se(p,xn) $$^{76}$$ Br Reaction Channels $$^{Nat}$ Se(p,xn) $$^{76}$ Br 反应通道中 $$^{76}$ Br 的生成截面和反应产率

IF 1.7 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-12 DOI: 10.1007/s40995-024-01661-5

Şevki Şentürk, Tuncay Bayram, Anes Hayder

{"title":"Production Cross-section and Reaction Yield of $$^{76}$$ Br for $$^{Nat}$$ Se(p,xn) $$^{76}$$ Br Reaction Channels","authors":"Şevki Şentürk, Tuncay Bayram, Anes Hayder","doi":"10.1007/s40995-024-01661-5","DOIUrl":"https://doi.org/10.1007/s40995-024-01661-5","url":null,"abstract":"Radioisotopes are now widely used in many different fields due to technological advancements. One of these fields is nuclear medicine. Many radioisotopes are used for diagnosis and treatment in nuclear medicine. The suitable physical properties of (^{76})Br isotopes for imaging in positron emission tomography (PET) have led researchers to study their potential production from different reaction channels. This study aimed to determine the parameters that can serve as a basis for experimental studies: production cross-sections, reaction yields, and total activity. In this context, we investigated some possible proton-induced production mechanisms of (^{76})Br using level density models. For this purpose, the Constant Temperature Fermi Gas Model (CTFGM), Back Shifted Fermi Gas Model (BSFGM), and Generalised Superfluid Model (GSM) models within the framework of TALYS 1.95 nuclear reaction code have been used for (^{Nat})Se(p,xn)(^{76})Br reaction channels. The calculated production cross-section values up to 60 MeV beam energy are found to agree with the available data in the literature. Furthermore, the reaction yields as a function of beam energy and total activation values as a function of irradiation time have been carried out.","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"29 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141529662","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

Scleractinian Corals from the Early and Late Aptian of Baghin Area (Southwest of Kerman, Iran): Introduction and Paleoenvironmental Analysis 巴格欣地区（伊朗克尔曼西南部）早、晚古生代硬骨珊瑚：介绍与古环境分析

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-12 DOI: 10.1007/s40995-024-01655-3

Toran Khamoshi, Amad Lotfabad Arab, Mohammadreza Vaziri

{"title":"Scleractinian Corals from the Early and Late Aptian of Baghin Area (Southwest of Kerman, Iran): Introduction and Paleoenvironmental Analysis","authors":"Toran Khamoshi, Amad Lotfabad Arab, Mohammadreza Vaziri","doi":"10.1007/s40995-024-01655-3","DOIUrl":"10.1007/s40995-024-01655-3","url":null,"abstract":"<div>From the Early and Late Aptian sediments of the Baghin area, southwest of Kerman, Iran, a fairly low diverse scleractinian coral assemblage is described on the basis of paleoenvironmental factors for the first time. The fauna, collected from 6 stratigraphic horizons, encompasses 21 species from 15 genera, belonging to the families Actinastraeidae, Caryophylliidae, Columastraeidae, Eugyridae, Lasmogyridae, Latomeandridae, Rayasmiliidae, Solenocoeniidae and Stylinidae. The fauna is dominated by low corallite integration forms (plocoid and cerioid arrangements), while highly integrated corals (hydnophoroid, thamnasteroid, meandroid types) and solitary forms are subordinated. In the Baghin section, the δ13C values present a prominent negative excursion followed by a major positive excursion, which is considered geochemically characteristic of Oceanic Anoxic Event 1a (OAE1a). Additionally, the δ18O values suggest a pronounced warming of oceanic waters throughout the studied interval. Although the corals generally had favorable ecological conditions for development, no coral fabric was observed that would suggest biohermal development. The Aptian scleractinian assemblage of the Baghin area exhibits an example of a non-reef-building coral population, that thrived on marly substrate, along the southern rim of the eastern Tethys.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"48 4","pages":"901 - 915"},"PeriodicalIF":1.4,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518027","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

Numerical Solution of Second-Order Linear Multidimensional Hyperbolic Telegraph Equation Using High-Order Compact Finite Difference Methods 利用高阶紧凑有限差分法数值求解二阶线性多维双曲电报方程

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-10 DOI: 10.1007/s40995-024-01659-z

Azam Sadat Hashemi, Mohammad Heydari, Ghasem Barid Loghmani

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Identification of Novel Functional Single Nucleotide Polymorphisms in the BRCA1 Gene of Breast Cancer Patients 鉴定乳腺癌患者 BRCA1 基因中的新型功能性单核苷酸多态性

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-06-10 DOI: 10.1007/s40995-024-01660-6

Mohsen Miresmaeili, Mohsen Nabi-Afjadi, Ahmadreza Lagzian, Zeinab Fathi, Mohammad Yazdanpour, Hamidreza Zalpoor, Mohammad Yaghoubzad-Maleki, Amir Mansour Moeini, Ibrahim Arman

{"title":"Identification of Novel Functional Single Nucleotide Polymorphisms in the BRCA1 Gene of Breast Cancer Patients","authors":"Mohsen Miresmaeili, Mohsen Nabi-Afjadi, Ahmadreza Lagzian, Zeinab Fathi, Mohammad Yazdanpour, Hamidreza Zalpoor, Mohammad Yaghoubzad-Maleki, Amir Mansour Moeini, Ibrahim Arman","doi":"10.1007/s40995-024-01660-6","DOIUrl":"10.1007/s40995-024-01660-6","url":null,"abstract":"<div>Breast cancer is the most common cancer in women, making for one-third of all malignancies in females. Between 40 and 45 percent of instances of hereditary breast cancer are caused by mutations in the breast and ovarian cancer susceptibility gene 1 (BRCA1). Breast cancer risk is raised by mutations in its Really Interesting New Gene (RING) and BRCA1 C-Terminal (BRCT) domains. Thus, the goal of this study was to identify new mutations in the BRCA1 gene's RING and BRCT domains. To examine BRCA1 mutation spectra, 107 patients were chosen who had a documented family history of ovarian or breast cancer. Direct DNA sequencing and single-stranded conformational polymorphism (PCR-SSCP), both based on the polymerase chain reaction, were used to screen for mutations in the RING and BRCT domains of the BRCA1 gene. In-silico analysis was used for the in-vitro research outcome. The study's findings indicated that the population carries several BRCA1 sequence variations, including C.55C > A, C.36A > T, C.60A > T, C.199G > C, C.164A > T, C.251A > G, C.4996T > G, C.5032A > T, C.5041A > G, and C.5291T > A. The Breast Cancer Information Core (BIC) searched and examined the mutations. Every mutation was a new mutation. Additionally, a bioinformatics investigation revealed that several variations had an impact on the pathogenicity and stability of the protein. After calculating the relative risk (RR) of research linked to danger, it was found that there was a strong correlation (RR = 1) between the newly discovered genetic mutations and an elevated risk of breast cancer. Our research emphasizes the value of mutation screening in cases of familial ovarian or breast cancer, as well as the possible ramifications of these results for genetic counseling and cancer prevention.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"48 4","pages":"821 - 833"},"PeriodicalIF":1.4,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141517817","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