This study was undertaken to introduce a fast, accurate, selective, simple and environment-friendly colorimetric method to determine iron (II) concentration in different lipstick brands imported or manufactured locally in Baghdad, Iraq. The samples were collected from 500-Iraqi dinars stores to establish routine tests using the spectrophotometric method and compared with a new microfluidic paper-based analytical device (µPAD) platform as an alternative to cost-effective conventional instrumentation such as Atomic Absorption Spectroscopy (AAS). This method depends on the reaction between iron (II) with iron(II) selective chelator 1, 10-phenanthroline(phen) in the presence of reducing agent hydroxylamine (HOA) and sodium acetate (NaOAc) buffer to yield a reddish/orange colour change proportional to the iron(II) concentration measured at λmax = 510 nm. Under optimum conditions, the calibration curve was linear in the range between (0.5-150) mg L-1 with a limit of detection of 0.09 mg L-1. Compared to a spectrophotometric detection method, µPAD measured colour intensity using captured images using Samsung mobile phone and image J program to give proof of concept that µPAD platform fulfils the purpose of accuracy and at the same time remaining cost-effective and simplistic to be used in both developing and developed countries gave same linear calibration curve with a limit of detection 0.12 mg L-1. ANOVA test was used to compare the proposed method results with conventional method results showing the method was accepted. The antimicrobial activity showed no significant effect from lipstick samples on tested microbes.
The research talked about one of the important social subject that care public so cities which is .
This subject deals with three subdivisions papers :-
The first one deals with the reasons of unemployment mentioned the definition of it in addition to make a comparison between it and inertia . then talked specially about unemployment that had got in our wounded country become of wars in it .
It had a branch talked about in Islamic society .
The second one deals with the negative results of unemployment specially economic , moral and social with their roles in spreading negative phenomenon in our society as terrorist , stolen … etc …
The third one deals with the ways of reducing unemployment and trying to limit it , tha
The theme of the individual in Islamic Economics is one of the important topics to demonstrate an established fact , that the Islamic economy may discriminate in granting individual full rights , which guarantees a safe living reassuring
The islamic caliphate was against the Aarab who became Muslims and
stayed in their desert and their companies didn’t share with the Muslims to
spread Islam by Al-Jihad. The Quran attacked them in many verses except
the Aarab who accepted when the prophet called them for Al-Jihad.
The Aarab in the ummayad period were in three categories :
1. The aarab who lived in the desert ,the islamic society was very revenge
towards them. The caliphate did not gave them Al-Ataa so they were in
bad situation
2. Those who lived in the country side . they were very trouble to the
trade.
3. The third lived in the cities and worked in the trade, Dawawin and in the
administration.
The Aarab of cities some of them associ
Elements of the study contribute to the direction and demonstrate scientific steps, in order to walk in the implementation procedures. The researcher is a sense of a social phenomenon is an important step and a motivation to study and uncover the causes and factored in order to reach substantive results. And to clarify what is involved in the importance of the study, as well as setting goals that aspire to achieve the study . &nbs
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The philosophy of punishment in Islam-oriented values and moral, educational and deterrent punishment is not marked by repressive means of punishment for her contemporary was not very objective but a means to an end and a means of reform is the individual and society.
It is not necessary to that any speakers can speak more than a language but the are coming from many origins to concern linguistics search that had began with an introduction and explanation to them that the language is still as words dictionaries on it (a tool for the transfer of ideas). It is basically a tool of the movement. The meaning
A poetic vision appeared in the poem of Al-Abbas bin Mardas Al-Sulami. He lived in the eras of pre-Islamic times and the emergence of Islam. The focus of this research: is the study of poetic text in the pre-Islamic era and the era of early Islam. The research followed a method in treating poetic texts, as it is based on presenting poetic texts from the collection of Al-Abbas bin Mardas, explaining the features of his poetic vision, and examining all the external factors that surrounded the poet and influenced his vision and all his thoughts. The results of this research was that Al-Abbas Ibn Mardas revealed some of the positions that he found contradicted the authentic Arab value before the advent of Islam, and the poet Abbas bin Mardas tr
... Show MoreAutorías: Ismael Saleem Abed, Imad Kadhim Khlaif, Salah Mahmood Salman. Localización: Revista iberoamericana de psicología del ejercicio y el deporte. Nº. 5, 2022. Artículo de Revista en Dialnet.