- - محمد عمر الشيخ صديق
- published on 7/31/2015
- COI gene sequence analysis for testing cyclical mating in securing genetic diversity of Macrobrachium rosenbergii
In this study we analyzed sequences of the COI gene to investigate the genetic structure
and diversity in four populations of the Giant Malaysian Prawn, Macrobrachium rosenbergii,
and to test the effectiveness of cyclical mating as means of securing genetic diversity.
Forty-three haplotypes were generated for the parental populations; most of these were
unique, with moderate genetic and low nucleotide diversities. However Tajima's neutrality
test indicated a significant (p < 0.05) departure of the Negeri Sembilan population from the
mutationedrift equilibrium, suggesting that it may be losing genetic variability. To combat
this problem we recommend a seasonal fishing ban. The AMOVA test results (5.45%,
p < 0.0001), the networking of haplotypes and their phylogenetic tree all revealed clear
population structuring between the populations. Genetic or haplotype diversity in the
progeny groups had increased indicating that a cyclical mating system could be an
effective means of maintaining it. The utilization of unique haplotypes in aquaculture,
developing DNA barcodes for broods in genetic improvement programs as well as in
evaluating restocking activities is recommended. For a better insight into the differences
between and among the populations, further investigations using nuclear markers are
published in Biochemical systematics and ecology
- Ahmed Gaafar Mohammed Elgorashi - احمد جعفر محمد القرشي
- published on 9/4/2018
- Production and Quality Evaluation on Non-alcoholic Sorghum Malt Beverage
The present study aimed to produce a non-alcoholic malt beverage using Feterita sorghum malt and evaluation of the product quality. Two products (A and B) of non- alcoholic sorghum malt beverage were prepared by addition of two different amounts of caramel. The quality of the products was evaluated using physical, chemical and sensory tests. The physicochemical properties of sorghum wort in terms of reducing sugars, pH, colour and original gravity were 43, 53 wort A were 39.42 and 41.67 mg/ml, 6.59 and 6.68 9 and EBC, 1.026 and 0.846 in wort A and wort B, respectively. The analysis of non-alcohol beverage indicated that the specific gravity, pH, total acidity, colour and alcohol content of product A and product B were 1.012 and 1.045 and 6.43, 6.39 and 3.4%, 3.8%, 12 EBC and13 EBC and 0.033 v/v and 0.043 v/v, respectively. In addition, iodine reaction was negative in each of the two products. It is concluded that effective use of germination to process sorghum grain for beverage require a control of the temperature and time. More research is needed in order to understand the adjustments made with different stages of processing of malted beverages.
published in INTERNATIONAL JOURNAL OF CURRENT RESEARCH
- - سحر حسن علي حامد
- published on 9/4/2018
- فاعلية برنامج بالوسائط المتعددة في تعليم وتعلم التلاميذ ذوي الإعاقة السمعية (دراسة حالة بمؤسسة أم كلثوم للصم، ولاية الجزيرة، السودان)
هدفت الدراسة إلى إعداد برنامج وسائط متعددة لتعليم وتعلم التلاميذ ذوي الاعاقة السمعية في مقرر الأرض بئية الحياة الوحدة الأولى (الأرض والكون) للصف الخامس، كما هدفت إلى التعرف على فاعلية البرنامج المصمم بالوسائط المتعددة في تعليم وتعلم ذوي الإعاقة السمعية، والتعرف على الفروق بين تحصيل التلاميذ في اختبار قبل وبعد تطبيق البرنامج . استخدمت الدراسة المنهج التجريبي. تكونت عينة الدراسة من المجتمع الكلي للصف الخامس بمدرسة أم كلثوم للصم والبالغ عددهم ثمانية طلاب (4 ذكور/ 4 إناث). تم تصميم برنامج بالبوربوينت وبرنامج كول بوكس يحتوي على الوحدة الأولى لمقرر الأرض بئية الحياة للصف الخامس، كما تم تطبيق اختبار قبل إجراء البرنامج وبعده لقياس فاعلية البرنامج. توصلت الدراسة إلى أن البرنامج المصمم بالوسائط المتعددة يتسم بالفاعلية، هنالك فروق ذات دلالة إحصائية في تحصيل التلاميذ ذوي الإعاقة السمعية في الاختبار القبلي والبعدي لصالح البعدي. اوصت الدراسة بتطبيق برامج الوسائط المتعدةة في مناهج ذوي الإعاقة السمعية.
- - سحر حسن علي حامد
- published on 9/4/2018
- Problems of Standardizing Translation of Psychological English Terms into Arabic
the study carried out to investigate the major problems of lack of standerdization in translating psychological terms into Arabic, and to findout what might cause the difficulties of translating English Psychological terms into Arabic.The tools of the study was a sample of (100) Psychological terms from four bilingual dictionaries in tow fields in psychology (clinical and general psychology). the study find out the following result: There are lack of standardaization in translating Psychological terms into Arabic due to the use of Arabicization for the most terms, other are using explanation and discription for the term, There are also morphological problems in translating terms into Arabic, There are standardizing in translating Proper names and abbreviation. the study recommed that all specialist in the field to intensification and cooperation to set hand a unitary Psychological tems which need efforts from all Arabic specialist through conferences, workshops,and symposiums and to setting up database upon which all Arab countries stand equivalents psychological terms that can be helpful in acheiving standardizing Psychological terms and focus in Taseel the terms.
- - يوسف عثمان حسين محمد اسد
- published on 8/24/2018
- Heavy Metals Concentrations in Drinking Water in Dongola and Merowe, Northern State, Sudan
The contamination of metals is a major environmental problem and, especially in the aquatic environment. Some metals are potentially
toxic or carcinogenic even at very low concentration and are, thus, hazardous to human, if they enter the food -chain. This
study aims to identify and determine the levels the heavy metals (HMs) in the River Nile in two town in the Northern State, Sudan,
and other drinking water source. The water was analyzed in the Central Petroleum Laboratories, Khartoum, Sudan, using Inductively
Coupled Plasma-Optical Emission Spectrometer ICP-OES 725 E) instrument to determine Zn, Pb, Cu, Co, Ni, Cd, Mo, Cr, Fe, Li, and Hg
levels and compare their concentrations with the permissible levels (PLs), using the Complete Randomized Design (CRD) with three
replications. The results from Dongola locality revealed the presence of high concentrations of Pb, Ni, Cd, and Fe in River Nile drinking
water (RNW) samples (4.92, 16.535, 0.013 and 0.46 ppm, respectively), which are higher than WHO (2004) acceptable limits.
The tap water (TW) samples reflected the presence of Pb, Ni, Cd, Cr, Fe and Hg at 5.985, 22.445, 0.013, 0.06, 0.485 and 0.003 ppm, respectively,
which are again higher than the WHO (2004) acceptable limits. However, the underground water (UDW) samples showed
the presence of Pb, Co, Ni, Cd, Cr and Hg at 4.145, 4.315, 20.25, 0.007, 0.07 and 0.002 ppm, respectively, which are also high. The
results from Merowe Locality followed the same trend. High concentrations of Pb, Ni, Cd and Fe were detected in the RDW samples
(4.7, 14.495, 0.0131 and 0.325 ppm, respectively); these levels were higher than those of WHO (2004) limits. The samples of TW in
Merowe also showed presence of high levels of Pb, Ni, Cd, Fe and Hg. Their levels were 4.72, 18.33, 0.012, 0.37 and 0.002 ppm, following
the same order. The UGW samples reflected the presence of high quantities of Pb, Co, Ni, Cd, Cr and Hg (2.84, 2.360, 18.635,
0.004, 0.055 and 0.002 ppm, respectively). It is concluded that all water sources in Dongola and Merowe Localities are not suitable
for drinking and require urgent attention by the authorities.
published in Pharmacology and Toxicology 6.9 (2018): 829-837.