Hydrogeochemical Modelling of Groundwater at Al-Nile Area, Center of Babylon Governorate, Iraq

تمثل منطقة الدراسة منطقة النيل في قضاء المحاويل التابعة الى محافظة بابل والتي تبتعد بحوالة (90 كم) جنوب محافظة بغداد وبحوالي (20 كم) شرق مدينة الحلة. غطت هذه الدراسة مساحة قدرها (300 كم2) واقعة مابين خطي طول (44° 30ʹ & 44° 36ʹ) وما بين دائرتي عرض (32° 32ʹ & 32° 36ʹ). الوضع الجيولوجي لمنطقة الدراسة يتميز بالترسبات الحديثة للعصر الرباعي خلال فترتي البليستوسين والهولوسين متضمنة في الغالب ترسبات السهل الفيضي. طبوغرافياً، تتميز محافظة بابل بقلة الانحدار مع تدرجات خفيفة بحوالي (22 سم/كم) تنحدر من المناطق الشمالية والشمالية الغربية باتجاه المناطق الجنوبية والجنوبية الشرقية. ان الهدف الأساسي للدراسة الحالية هو انشاء موديلات هيدروجيوكيميائية للمياه الجوفية في منطقة الدراسة لغرض تحديد نسب الذوبان والترسيب للأطوار المعدنية على طول مسارات التدفق المختارة وكذلك لغرض توضيح مدى تأثير المياه السطحية (جدول بابل) على المياه الجوفية من خلال استخدام تقنية الخلط الهايدروجيوكيميائية. أظهرت المعاملات الكيميائية للمياه السطحية والجوفية تغيرات مكانية وزمانية هامة من خلال تراكيز العناصر الرئيسية والثانوية خلال فترتي الدراسة. يدل التفاعل الجيوكيميائي الرئيسي في منطقة الدراسة على وجود طور الذوبان في معادن الدولومايت، الجبسوم، الهالايت والسلفايت، أما طور الترسيب فهو يشمل معادن الكالسايت والهيماتايت على طول المسارات المختارة. كما أوضحت عملية الخلط بان هناك تأثير عالي لجدول بابل على الابار (1،7،13 و21)، ويكون اقل تأثيراً على الابار (3،5،14،19 و20) وبنسب مختلفة.The study area represented Al-Nile area at Al-Mahaweel district affiliated to Babylon governorate and just (90 km) south of Baghdad governorate and about (20 km) east of Al-Hillah city. This study covered an area about (300 km2) which located between (44°30' & 44°36') E and (32°32' & 32°36') N. The geological setting of the study area characterized by recent sediments of the quaternary period during the Pleistocene and Holocene involves the floodplain deposits. Topographically, the Babylon governorate characterized by a lack of slope with gentle gradient about (22 cm/km) descended from northern and northwestern sides towards the eastern parts and southeastern. The mainly target of this present study is to originate a hydrogeochemical modelling of groundwater in the study area to determine the dissolution and precipitation ratios of the mineral phases along the selected flow paths and also explained the effected ratio of the surface water (Babylon stream) on the groundwater by using the hydrogeochemical mixing technique. Ground and surface water parameters show significant spatial and temporal variations in major and minor element concentrations during the two periods of the study. The mixing process shows us a highly effect of the Babylon stream in the wells (1,7,13 and 21), while show low effected on the wells (3,5,14,19 and 20) with a different contribution

Hydrogeochemical Modelling of Groundwater at Al-Nile Area, Center of Babylon Governorate, Iraq

تمثل منطقة الدراسة منطقة النيل في قضاء المحاويل التابعة الى محافظة بابل والتي تبتعد بحوالة (90 كم) جنوب محافظة بغداد وبحوالي (20 كم) شرق مدينة الحلة. غطت هذه الدراسة مساحة قدرها (300 كم2) واقعة مابين خطي طول (44° 30ʹ & 44° 36ʹ) وما بين دائرتي عرض (32° 32ʹ & 32° 36ʹ). الوضع الجيولوجي لمنطقة الدراسة يتميز بالترسبات الحديثة للعصر الرباعي خلال فترتي البليستوسين والهولوسين متضمنة في الغالب ترسبات السهل الفيضي. طبوغرافياً، تتميز محافظة بابل بقلة الانحدار مع تدرجات خفيفة بحوالي (22 سم/كم) تنحدر من المناطق الشمالية والشمالية الغربية باتجاه المناطق الجنوبية والجنوبية الشرقية. ان الهدف الأساسي للدراسة الحالية هو انشاء موديلات هيدروجيوكيميائية للمياه الجوفية في منطقة الدراسة لغرض تحديد نسب الذوبان والترسيب للأطوار المعدنية على طول مسارات التدفق المختارة وكذلك لغرض توضيح مدى تأثير المياه السطحية (جدول بابل) على المياه الجوفية من خلال استخدام تقنية الخلط الهايدروجيوكيميائية. أظهرت المعاملات الكيميائية للمياه السطحية والجوفية تغيرات مكانية وزمانية هامة من خلال تراكيز العناصر الرئيسية والثانوية خلال فترتي الدراسة. يدل التفاعل الجيوكيميائي الرئيسي في منطقة الدراسة على وجود طور الذوبان في معادن الدولومايت، الجبسوم، الهالايت والسلفايت، أما طور الترسيب فهو يشمل معادن الكالسايت والهيماتايت على طول المسارات المختارة. كما أوضحت عملية الخلط بان هناك تأثير عالي لجدول بابل على الابار (1،7،13 و21)، ويكون اقل تأثيراً على الابار (3،5،14،19 و20) وبنسب مختلفةThe study area represented Al-Nile area at Al-Mahaweel district affiliated to Babylon governorate and just (90 km) south of Baghdad governorate and about (20 km) east of Al-Hillah city. This study covered an area about (300 km2) which located between (44°30' & 44°36') E and (32°32' & 32°36') N. The geological setting of the study area characterized by recent sediments of the quaternary period during the Pleistocene and Holocene involves the floodplain deposits. Topographically, the Babylon governorate characterized by a lack of slope with gentle gradient about (22 cm/km) descended from northern and northwestern sides towards the eastern parts and southeastern. The mainly target of this present study is to originate a hydrogeochemical modelling of groundwater in the study area to determine the dissolution and precipitation ratios of the mineral phases along the selected flow paths and also explained the effected ratio of the surface water (Babylon stream) on the groundwater by using the hydrogeochemical mixing technique. Ground and surface water parameters show significant spatial and temporal variations in major and minor element concentrations during the two periods of the study. The mixing process shows us a highly effect of the Babylon stream in the wells (1,7,13 and 21), while show low effected on the wells (3,5,14,19 and 20) with a different contributio

Hydrogeochemical Modelling of Groundwater at Al-Nile Area, Center of Babylon Governorate, Iraq

تمثل منطقة الدراسة منطقة النيل في قضاء المحاويل التابعة الى محافظة بابل والتي تبتعد بحوالة (90 كم) جنوب محافظة بغداد وبحوالي (20 كم) شرق مدينة الحلة. غطت هذه الدراسة مساحة قدرها (300 كم2) واقعة مابين خطي طول (44° 30ʹ & 44° 36ʹ) وما بين دائرتي عرض (32° 32ʹ & 32° 36ʹ). الوضع الجيولوجي لمنطقة الدراسة يتميز بالترسبات الحديثة للعصر الرباعي خلال فترتي البليستوسين والهولوسين متضمنة في الغالب ترسبات السهل الفيضي. طبوغرافياً، تتميز محافظة بابل بقلة الانحدار مع تدرجات خفيفة بحوالي (22 سم/كم) تنحدر من المناطق الشمالية والشمالية الغربية باتجاه المناطق الجنوبية والجنوبية الشرقية. ان الهدف الأساسي للدراسة الحالية هو انشاء موديلات هيدروجيوكيميائية للمياه الجوفية في منطقة الدراسة لغرض تحديد نسب الذوبان والترسيب للأطوار المعدنية على طول مسارات التدفق المختارة وكذلك لغرض توضيح مدى تأثير المياه السطحية (جدول بابل) على المياه الجوفية من خلال استخدام تقنية الخلط الهايدروجيوكيميائية. أظهرت المعاملات الكيميائية للمياه السطحية والجوفية تغيرات مكانية وزمانية هامة من خلال تراكيز العناصر الرئيسية والثانوية خلال فترتي الدراسة. يدل التفاعل الجيوكيميائي الرئيسي في منطقة الدراسة على وجود طور الذوبان في معادن الدولومايت، الجبسوم، الهالايت والسلفايت، أما طور الترسيب فهو يشمل معادن الكالسايت والهيماتايت على طول المسارات المختارة. كما أوضحت عملية الخلط بان هناك تأثير عالي لجدول بابل على الابار (1،7،13 و21)، ويكون اقل تأثيراً على الابار (3،5،14،19 و20) وبنسب مختلفة.The study area represented Al-Nile area at Al-Mahaweel district affiliated to Babylon governorate and just (90 km) south of Baghdad governorate and about (20 km) east of Al-Hillah city. This study covered an area about (300 km2) which located between (44°30' & 44°36') E and (32°32' & 32°36') N. The geological setting of the study area characterized by recent sediments of the quaternary period during the Pleistocene and Holocene involves the floodplain deposits. Topographically, the Babylon governorate characterized by a lack of slope with gentle gradient about (22 cm/km) descended from northern and northwestern sides towards the eastern parts and southeastern. The mainly target of this present study is to originate a hydrogeochemical modelling of groundwater in the study area to determine the dissolution and precipitation ratios of the mineral phases along the selected flow paths and also explained the effected ratio of the surface water (Babylon stream) on the groundwater by using the hydrogeochemical mixing technique. Ground and surface water parameters show significant spatial and temporal variations in major and minor element concentrations during the two periods of the study. The mixing process shows us a highly effect of the Babylon stream in the wells (1,7,13 and 21), while show low effected on the wells (3,5,14,19 and 20) with a different contributio

Yield and fruit quality of drip-irrigated cantaloupe under salt stress conditions in an arid environment

Abstract: Drip irrigation has the greatest advantages over other irrigation methods when saline water is used. In irrigated lands, the production of total and marketable yield depends largely on the quantity and salinity of the irrigation water. The performance of field-grown cantaloupe (Cucumis melo-var. Cantaloupensis) in 2-years was compared with fresh water applied at crop water requirement, 1.0ETc (as a control) or saline water (3.8 dS/m) applied at amounts equivalent to 1.0ETc, 1.2ETc and 1.4ETc, respectively. The occurrence of maximum soil water content and minimum salinity in the root zone during the growing seasons was noted only for 1.4ETc while irrigation regime at 1.0ETc was found unsuitable under saline conditions. Saline water significantly depressed cantaloupe total yield but the reduction was minimal under 1.4ETc irrigation regime. Salinity reduced average fruit weight while the number of fruit per plant remained almost stable regardless of the irrigation regime. Although the differences in fruit yield were significant, grading for export quality according to suitable fruit size and appearance almost compressed the differences in total yield between fresh and saline water plants. Total yield with saline water was almost 18-32% lower than with fresh water but offered several benefits as the absolute exportable yield was equaled to that of the control but the export rate was 90 versus 72%, respectively. However saline water provides an attractive compromise between fruit size and quality where 28% of the fresh water fruits were either too large, poorly netted or irregularly shaped, while plants irrigated with saline water had extremely high export rates. Moreover, saline water contributed markedly to the improvement of fruit quality by increasing total soluble solids and sugar contents. Considering the results of two years, the use of mild saline water for irrigation appears to be an attractive approach as a tool to optimize cantaloupe production with taking advantage of saline water effects on crop quality

Fuzzy Algorithm for Supervisory Voltage/Frequency Control of a Self Excited Induction Generator

This paper presents the application of a Fuzzy Logic Controller (FLC) to regulate the voltage of a Self Excited Induction Generator (SEIG) driven by Wind Energy Conversion Schemes (WECS). The proposed FLC is used to tune the integral gain (KI) of a Proportional plus Integral (PI) controller. Two types of controls, for the generator and for the wind turbine, using a FLC algorithm, are introduced in this paper. The voltage control is performed to adapt the terminal voltage via self excitation. The frequency control is conducted to adjust the stator frequency through tuning the pitch angle of the WECS blades. Both controllers utilize the Fuzzy technique to enhance the overall dynamic performance.  The simulation result depicts a better dynamic response for the system under study during the starting period, and the load variation. The percentage overshoot, rising time and oscillation are better with the fuzzy controller than with the PI controller type.

Draft Genome Sequence of Photorhabdus luminescens Strain BA1, an Entomopathogenic Bacterium Isolated from Nematodes Found in Egypt

Photorhabdus luminescens strain BA1 is an entomopathogenic bacterium that forms a symbiotic association with Heterorhabditis nematodes. We report here a 5.0-Mbp draft genome sequence for P. luminscens strain BA1, with a G+C content of 42.46% and 4,250 candidate protein-coding genes

Draft Genome Sequence of Photorhabdus temperata Strain Meg1, an Entomopathogenic Bacterium Isolated from Heterorhabditis megidis Nematodes

Photorhabdus temperata strain Meg1 is an entomopathogenic bacterium that forms a symbiotic association with Heterorhabditis nematodes. We report here a 4.9-Mbp draft genome sequence for P. temperata strain Meg1, with a G+C content of 43.18% and containing 4,340 candidate protein-coding genes

Tomato yield, physiological response, water and nitrogen use efficiency under deficit and partial root zone drying irrigation in an arid region

Water scarcity in arid regions is a serious problem, which calls for innovative irrigation water management. Partial root zone drying (PRD) technique can considerably reduce irrigation amount for crops. To investigate this further, tomato plants were imposed to either surface drip (SUR) with full irrigation (FI) at 100% of evaporative demands and regulate deficit irrigation (RDI) at 50% water of FI or subsurface drip irrigation (SDI) with fixed PRD at 75 (PRD75) and 50% (PRD50) of the FI. Surface evaporation under SUR with FI constitutes a large fraction of water losses from cropped fields while SDI with PRD75 preserved more water for plant uptake. Plants grown under water saving treatments showed lower stomatal conductance and transpiration rates compared to FI plants. Tomato yield under SDI with PRD75 was comparable to yield under SUR with FI for both tested seasons along with 25% water saving and 30% increase in water use efficiency (WUE). Otherwise, PRD50 reduced yield by 18-20%, but a substantial amount of irrigation water was saved along a 60 and 65% higher WUE compared to FI treatment. Fruit dry weight and harvest index (HI) were significantly higher with PRD75 compared to the other treatments. Seasonal N uptake and in turn N recovery was higher in PRD75 than any other treatment associated with improving N use efficiency

Electrical performance of efficient quad-crescent-shaped Si nanowire solar cell

The electrical characteristics of quad-crescent-shaped silicon nanowire (NW) solar cells (SCs) are numerically analyzed and as a result their performance optimized. The structure discussed consists of four crescents, forming a cavity that permits multiple light scattering with high trapping between the NWs. Additionally, new modes strongly coupled to the incident light are generated along the NWs. As a result, the optical absorption has been increased over a large portion of light wavelengths and hence the power conversion efficiency (PCE) has been improved. The electron–hole (e–h) generation rate in the design reported has been calculated using the 3D finite difference time domain method. Further, the electrical performance of the SC reported has been investigated through the finite element method, using the Lumerical charge software package. In this investigation, the axial and core–shell junctions were analyzed looking at the reported crescent and, as well, conventional NW designs. Additionally, the doping concentration and NW-junction position were studied in this design proposed, as well as the carrier-recombination-and-lifetime effects. This study has revealed that the high back surface field layer used improves the conversion efficiency by ∼ 80%. Moreover, conserving the NW radial shell as a low thickness layer can efficiently reduce the NW sidewall recombination effect. The PCE and short circuit current were determined to be equal to 18.5% and 33.8 mA/cm$^{2}$ for the axial junction proposed. However, the core–shell junction shows figures of 19% and 34.9 mA/cm$^{2}$. The suggested crescent design offers an enhancement of 23% compared to the conventional NW, for both junctions. For a practical surface recombination velocity of 10$^{2}$ cm/s, the PCE of the proposed design, in the axial junction, has been reduced to 16.6%, with a reduction of 11%. However, the core–shell junction achieves PCE of 18.7%, with a slight reduction of 1.6%. Therefore, the optoelectronic performance of the core–shell junction was marginally affected by the NW surface recombination, compared to the axial junction