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THE EFFECT OF STIRRING AND INTERRUPTION ON THE ETCHING CHARACTERISTIC OF CR-39 TRACK DETECTOR
دراسة تأثير الاثارة والتوقف على مميزات القشط لكاشف الاثر النووي CR-39

Author: T.M. SALMAN
Journal: Journal of Basrah Researches (Sciences) مجلة ابحاث البصرة ( العلميات) ISSN: 18172695 Year: 2010 Volume: 36 Issue: 3A Pages: 17-21
Publisher: Basrah University جامعة البصرة

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Abstract

Etching behavior of the CR-39 plastic track detector hve been studied. From bulk etch rate as well as from track etch rate, the sensitive equilibrium of this detector in NaOH solutions is examined in detail. A comparison of discrimination properties between NaOH and KOH is made .

لقد تم دراسة سلوك القشط الكيمياوي لكشف الاثر النووي CR-39 باستخدام محلول القشط NaOH و KOH مع تشخيص الحساسية المتوازنة للكشف باستخدام نفس المحلولين من معرفة معدل الحفر العام VB و معدل حفر الاثر VT ,كما تمت المقارنة بين المميزات التي حصلت للكاشف باستخدام محلولي القشط NaOH وKOH.


Article
Physicochemical and Spectroscopic Elemental Analysis of Ground Water in Thickly Populated and Industrial Area of Quetta Valley Pakistan

Authors: Abdul Baqi Achakzai --- Irshad Ali --- Naqeebullah Khan --- Samiullah Khan --- et al.
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2019 Volume: 22 Issue: 3 Pages: 18-25
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

Quetta valley the capital of Balochistan Province, has faced twice the rush of immigrants i.e; Afghan refugees after Saur Revolution and people from interior Balochistan due to drought in Balochishan from the last two decades. Additionally a number of industries at various areas has been established. This abrupt increase in the population and discharge from the industries have affected the drinking water quality in the valley. To assess these affects, nine ground water samples taken from densely populated and industrial areas were analyzed for their physicochemical (taste, order, color, temperature, conductivity, turbidity, alkalinity, pH, total hardness and total dissolved salts) and concentrations of cations (Na, K, Fe, Mn, Co, Ni, Cu, Cd and Pb) by Flame Photometer and Atomic Absorption Spectrometer. The results obtained were compared with both Pakistan National Standards (PNS) for drinking water Quality (2010) and World Health Organization (WHO), standards for drinking water. All the results were in the limits of the standards except cobalt (0.095 – 0.12 mg/L) and cadmium (0.0348 – 0.041 mg/L) which were found to be in high concentrations that are attributed to the anthropogenic activates.


Article
Assessment of Bottled Drinking Water Quality in Baghdad Local Market by Some Chemical and Biological Parameters

Authors: Sabah O. Hamad --- Noor Y. Salih --- Ahmed Kh. Kadhim
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2018 Volume: 00 Issue: 1 Pages: 72-77
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

The aim of this work is to study different parameters of bottled drinking water that affect the health of people of Baghdad city. To perform this target, seventeen bottled samples were collected from local markets which were different bottles size and trade markets. The samples were analyzed physical, chemical and biological factors that influence water quality of the bottled water. The physical and chemical tests of bottled water showed that the mean value of pH ranged from 6.96-8.5, Total Dissolved Solids (TDS) 8-166 ppm, Total Hardness (TH) 22-178 ppm, Calcium (Ca++) 0.0-35 ppm, Magnesium (Mg++) 0.0-30 ppm, Chloride (Cl) 0.0-27 ppm, sodium (Na+) 0.0-25 ppm, potassium (K+) 0.0-4.5 ppm, Electrical Conductivity (Ec) 16-332 µs/cm. All samples were within the permissible limits for Iraqi criteria and standards for bottled water. The biological parameters include: total plate count, total coliform, fecal coliform, E.coli and yeast& fungi. The failure percentages of samples were 23.5, 11.7, 11.7, 11.7 and 11.7% respectively.

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