Rafidain journal of science最新文献_第3页

A new Spectrophotometric Approach for Determination of Meropenem in Pharmaceutical Formulation 分光光度法测定制剂中美罗培南含量的新方法

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180272

Ann H. Mahmood, Hana Mahmood

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Spectrophotometric Estimation of Sulfacetamide Sodium Using N,N-Diethyl-p-phenylenediamine Reagent 用N,N-二乙基-对苯二胺试剂分光光度法测定磺胺乙酰胺钠

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180273

Thukaa Abdulrazzaq, S. Sultan

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Phylogenetic Analysis of 16S rRNA Gene of Burkholderia cepacia Complex Species Isolated from Different Clinical Sources 不同临床来源洋葱伯克霍尔德菌复合体16S rRNA基因的系统发育分析

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180288

Hazim Ibrahim, E. Alsammak

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Assessment of Groundwater Quality for Different uses at the Kharab Bazar Village in Al-Baaj District of Nineveh Governorate 尼尼微省Al-Baaj地区Kharab Bazar村不同用途地下水质量评估

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180287

Nasser Al-Hayaly, Shaimaa Ali

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Fumigant Toxicity and Repellent Effect of Propolis Oil Against Adults and Third Instar Larvae of Red Flour Beetle Tribolium castaneum (Herbst), (Coleoptera:Tenebrionidae) 蜂胶油对赤粉甲虫成虫和3龄幼虫的熏蒸毒性及驱避效果(鞘翅目:拟甲科)

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180286

Baraa R. Mohammed, Muneef A. Mustafa

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Enterococcus faecalis a Major Cause of STD: A New Evidence 粪肠球菌是性病的主要病因:一个新的证据

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180271

Qasim Al-Dobardani, A. AL-Rawi, Khairul Radzun

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Oxidation: The Most Common Pathway for the Pro-drugs Bio Precursors Activation 氧化:前药物生物前体活化的最常见途径

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180275

S. Saied, Mohanad Saleh, Salim Mohammed

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Preparation and Study of a Number of Divalent Metal Complexes with the Ligand 2--Hydroxyphthalic Acid 2-羟基邻苯二甲酸二价金属配合物的制备与研究

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180289

Saba M. Alasalli, Ihsan Mustafa

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Study of the Effect Range on Linear Magnification in the Change of the Different Geometry of Cylindrical Electrostatic Lenses of Three-electrode 三电极圆柱静电透镜不同几何形状变化对线性放大倍率影响范围的研究

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180291

Mohammed idrees kanaan albayati, Abdullah I. M. Alabdullah

{"title":"Study of the Effect Range on Linear Magnification in the Change of the Different Geometry of Cylindrical Electrostatic Lenses of Three-electrode","authors":"Mohammed idrees kanaan albayati, Abdullah I. M. Alabdullah","doi":"10.33899/rjs.2023.180291","DOIUrl":"https://doi.org/10.33899/rjs.2023.180291","url":null,"abstract":"Electrostatic lenses are designed using an array of electrodes with cylindrical apertures precisely arranged on a line of symmetry. In this research, four cylindrical three-electrode electrostatic lenses were designed, three of them with unusual geometric shapes and one with a traditional geometric shape, as the same electrical voltages and the same geometric parameters were applied to all the proposed lenses in both acceleration and deceleration modes. The optical properties of each lens designed in acceleration and deceleration modes were calculated to show the extent to which linear magnification is affected by the geometry of electrostatic lenses, and the results were compared between the proposed lenses. As the results prove that the electrostatic lens geometry has an important effect in increasing or decreasing the linear magnification range, the best lens is selected from among the four designed lenses based on its optical performance. It was found that the lens with the concave inner surface of the electrode has the best optical performance of the rest of the lenses, which shows that the concavity of the inner surface of the electrode has a direct effect on the properties of electrostatic lenses. Which lens' has the largest linear magnification range (1.0-2.4) and (1.4-3.74), respectively, in both acceleration and deceleration modes. The calculations were made using the program (SIMION8.0).","PeriodicalId":20803,"journal":{"name":"Rafidain journal of science","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76388818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Relationship Between the Lengths of the Pole and the Iron Arm in the Design of the Electronic Magnetic Snorkel- Lens 电磁浮潜镜设计中磁极长度与铁臂长度的关系

Rafidain journal of science Pub Date : 2023-09-01 DOI: 10.33899/rjs.2023.180290

Neam Awanees Samuel Derdrian, Mohammed K. Zeki, Abdullah I. M. Alabdullah

{"title":"The Relationship Between the Lengths of the Pole and the Iron Arm in the Design of the Electronic Magnetic Snorkel- Lens","authors":"Neam Awanees Samuel Derdrian, Mohammed K. Zeki, Abdullah I. M. Alabdullah","doi":"10.33899/rjs.2023.180290","DOIUrl":"https://doi.org/10.33899/rjs.2023.180290","url":null,"abstract":"The dipole region is one of the most important factors in determining the effectiveness of a magnetic lens. The optimum position of the pole and the most important aspect of magnetic electron lenses are the iron covers, which are used to study the concentrations and optical properties of the display devices, where the magnetic field increases smoothly and uniformly at the highest possible value and with only one peak. The main objective of this study is to determine and reach a relationship between the length of the tip of the iron arm relative to the length of the axial magnetic pole (Z), where the pole tip was chosen at (Z = 0 mm). In practice, it was observed that the optical properties of the electron lenses showed a significant improvement when the length of the tip of the iron arm and the length of the magnetic pole were changed. The opposite of the coil as it was noted that it is possible to increase its performance by removing or reducing the magnetic flux leakage so that the axial magnetic field will then rise inside the lens in a direction that prevents its loss. The designers’ choice is when preparing the lens along the iron arm based on extensive studies and choosing an appropriate length of the pole that determines the desired function of the lens or what is known as the optical system. In this work, a relationship was established between the length of the electrode and the length of the iron arm, and FEMM and MELOP programs were used to verify the performance of the lens, the axial magnetic field as well as the focal optical properties.","PeriodicalId":20803,"journal":{"name":"Rafidain journal of science","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73365900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0