Home » Archive » Vol 3 Issue 1

Vol 3 Issue 1

Volume  3  Issue  1

____________________________________________________________________________

Naderi masuod , ahmadi javad , Ansari maysam , zahedi arismani abolfazl

Operation of an Hub Energy System With Regard To Response Load

[Abstract] [Full-Text PDF] [html]

Abstract:This paper The power industry worldwide has undergone many changes and different countries with different motives into And. Pulse laid privatization of renewal of restructuring the electricity market formation, program management consumption by power companies came into force. So in such circumstances the authorities responsible for the market is that it created such incentives in consumers into demand response programs that would encourage power consumption as a subset of the known consumption.

____________________________________________________________________________

El-Hagarey, Mohamed E., El-Sabbagh, B. A. , F. Safranyik

Mathematical Model of Engineering and Hydraulic Design Factors of Innovative Pressure Compensating Pottery Dripper

[Abstract] [Full-Text PDF] [html]

Abstract:Innovative Pressure Compensating Pottery Dripper (PCPD) is designed and manufactured from local and environmental materials where the basic components of (PCPD) are pottery discs. It is made from Aswan Clay beside the additional material to result at various porosities and volumes. The composites contain dry powder of organic matter (saw dust of a diameter which is less than 1 mm) by 0, 3, 6, 9, 12, and 15% of total mix weight. The basic element of mixes is Aswan clay. Pottery discs are used in designing poly-ethylene dripper to protect and service the pottery discs then the pottery discs were formatted under the designed shape (discs) and dimensions, then the discs become drier aerobically, then it was burned in 800, 900, 1000 and 1100 Celsius at 4 hours, the turn from degree to another after one hour (heating was gradual). The basic target of investigation is (regulating and self-compensating of flow performance through the pottery drippers). Pottery dripper dimensions are designed in three diameters of flow area (13, 17, and 21 mm) and six porosities (P0, P3, P6, P9, P12 and P15), then various types of pottery drippers are tested under three pressure heads (0.5, 0.75 and 1 bar). The main results clear the P6 the PCPD flow is 0.01, 0.02 and 0.04 l/s then for P9 the PCPD flow is 0.1, 0.14 and 0.22 l/s. By the same token, for P12 the PCPD flow is 0.24, 0.3 and 0.36 l/s. Subsequently, for P15 the PCPD flow is 0.336, 0.646 and 1.00 l/s under operating head 0.5, 0.75 and 1 bar respectively. Another significant factor, the exponent of operating head is 0.21, 0.026, 0.12, and 0.335 for pottery porosity P6, P9, P12 and P15 respectively. There is a crystal clear significant influence of pottery porosities on flow. At the same time, there is obviously a significant influence of both of designing flow areas (inside diameter of rubber ring) and operating head on flow. Beside there is significant impact of interaction between the three engineering and hydraulic design factors at LSD = 0.05. Beside the equation of PCPD design was resulted using the mathematical analysis.

____________________________________________________________________________

Agha M. K. M , and S. S. gomaa A. I. S. Ahmed

Effect of bacterial isolates and phosphite compounds on disease incidence of late blight (Phytophthora infestans) and improve productivity of some potato cultivars

[Abstract] [Full-Text PDF] [html]

Abstract: Late blight of potato is caused by Phytophthora infestans and led to economic loss in large areas of potato production. In green house and field experiments, we used Four bacterial strains as biocontrol agents (Brevibacillus brevis, Pseudomonas putida, Pseudomonas aerogenosa, Bacillus subtilis ), potassium phosphite ( kPhi), copper as well as difenoconazole (Score) for disease control. The highest reduction in disease was achieved by applying difenoconazole where led to high reduction of diseases incidence compared to control, followed by potassium phosphite and Bacillus subtilis by 26.6% reduction with significantly increasing of potato yield compared to other treatments. Regarding to the response of cultivars to biological and chemical treatments compared with the non-treated control. Results clarified that cultivars used differed in their susceptibility to Phytophthora infestans under both green house and natural infection. Burren cv. was the less susceptible followed with cv. Spunta. Control treatment gave the lowest yield due to high late blight incidence. The coefficients of determination and regression coefficients for yield characters were analyzed, highly significant increasing effect on potato yield was obtained according to decreasing of disease incidence and severity. It is recommended that using of Bacillus subtilis as biocontrol agents and with integrated management program with potassium and pesticide may be useful in controlling potato late blight disease under field conditions.

____________________________________________________________________________

Eid, S.A , Diab, S.M

E0 Transitions in 146Sm

[Abstract] [Full-Text PDF] [html]

Abstract: The potential energy surfaces V(β, γ) for 146Sm, levels energy belonging to the ground state (g.s), beta ( β ) , gamma (γ ) bands, electromagnetic transition probabilities B(E2) ‘s , mixing ratios and strength of the electric monopole, (E0), transitions X(E0/E2) are calculated within the frame work of the interacting boson approximation model (IBA-2). The results of these calculations are compared to the available experimental data and reasonable agreement has obtained.

____________________________________________________________________________

El-Hagarey, Mohamed E.

A new technique of the Use of Saline Water in Irrigation Systems by Innovative Pottery Dripper

[Abstract] [Full-Text PDF] [html]

Abstract: The pottery dripper dimensions are designed and Manufactured in three volumes (49, 31.4 and 16.5 cm3), three
nominal porosity (10 , 21 and 31%); then various types of pottery drippers (PD) are tested under three pressure heads (1, 0.75
and 0.5 bar) beside the statistical design is split split plots, and three concentrations of saline groundwater (6154, 7149 and
7154 ppm), from Ras-Sudr Research Station.
The main results of this study showed the following: For porosity P1 (10%) of pottery dripper, under operating pressure head 1 bar, the discharge ranged from 0.5 l/s to 1.14 l/s;
under operating pressure head 0.75 bar, the discharge ranged from 0.5 l/s to 1.14 l/s; and under operating pressure head 0.5
bar, the discharge ranged from 0.2 l/s to 0.53 l/s. For porosity P2 (21%) of pottery dripper, under operating pressure head 1
bar, the discharge ranged from 1.69 l/s to 4.11 l/s; under operating pressure head 0.75 bar, the discharge ranged from 1.14 l/s
to 3.06 l/s; and under operating pressure head 0.5 bar, the discharge ranged from 0.58 l/s to 1.82 l/s. For porosity P3 (31%) of
PD, under operating pressure head 1 bar, the discharge ranged from 24.1/s to 37.7 l/s; under operating pressure head 0.75
bar, the discharge ranged from 16.8 l/s to 28.3 l/s; and under operating pressure head 0.5 bar, the discharge ranged from
9.5/s to 19.4 l/s. Saline water concentration decreased from 6154 ppm to 5840, 5806 and 5440ppm using the PD with porosity
10, 21 and 31% respectively. Saline water concentration decreased from 7149ppm to 7106, 7013 and 6979 ppm using the PD
with porosity 10, 21 and 31%, respectively; and finally saline water concentration decreased from 7863 ppm to 7846, 7778
and 7285 ppm using the PD with porosity 10, 21 and 31 % respectively,

____________________________________________________________________________

Farjam mohammad hasan , yousefi kazem , shahedi badi mohamamd

Planning of Multi-carrier Energy System (Energy Hub) with Considering Reliability Indices

[Abstract] [Full-Text PDF] [html]

Abstract:. Planning and reliability are very significant factors in power systems. In this thesis, after introducing multi-carrier energy systems, reliability, planning and mentioning the optimization methods, an attempt has been made to statically investigate planning multi-carrier energy system with regard to energy reliability indices. Therefore, one multiple system containing different kinds of elements with various efficiencies is taken into consideration and the cost of energy carriers in different hours in the target year is calculated. By the genetic hybrid optimizing algorithms and with the help of the mathematical methods, the best condition for installing elements in different times in static model framework was determined and the exact amount of input energy is calculated with reference to rate of demand for electronic and thermal energy. Finally, by extending the period for planning system to one-year period, the results are evaluated in a sample system.

____________________________________________________________________________

Helal Ragab Moussa and Manal Abdel Hakam Atiia

The Palliative Effect of Lead Pollution in Vicia faba L. by using Stigmasterol

[Abstract] [Full-Text PDF] [html]

Abstract: Environmental pollution by toxic heavy metals is one of the most serious issues that world populations have to cope with. Lead is one of the most toxic for humans and plants with great damage for the environment.
Faba bean (Vicia faba L,) is an annual legume crop which is consumed as plant foods for human and animal nutrition. Thus, this study was undertaken to evaluate the effect of stigmasterol at recommended dose (500 μM), a promising plant development regulatory substance in alleviating the deteriorative effect of Pb at 0.0 and 400 mg/l on faba bean plants. The photosynthetic pigments, photosynthetic activity (14CO2-assimilation), transpiration rate, antioxidant enzymes activities, glutathione contents, free proline, total protein, phenol and lipid peroxidation (malondialdehyde content) and inorganic nutrient contents (nitrogen, phosphorus and potassium) were investigated.
The results revealed that lead-stressed bean plants treated with stigmasterol had increased levels of photosynthetic pigments (chlorophyll a+b and carotenoids) as compared with lead-stressed plants. The level of antioxidant system components (superoxide dismutase, peroxidase, catalase, and glutathione peroxidase) increased in response to stigmasterol treatment as compared to lead-stressed plants. Enhanced antioxidant activities helped to decrease oxidative damage from lead and develop tolerance against lead stress in stigmasterol-treated faba bean plants. An increase in the degree of lead tolerance induced by stigmasterol was indicated by the improvement of photosynthetic pigments and consequently the photosynthetic activity and weight of 100 grain. Lead treatments decreased the transpiration rate as compared to the control plant. Meanwhile, transpiration rate increased in response to stigmasterol treatment as compared to lead-stressed plants.
Lead treatments decreased the macronutrient level (N, P and K) as compared to the control plants. Meanwhile lead-stressed bean plants pretreated with stigmasterol had an increased level of these element contents.
The data provided evidence that stigmasterol treatment reduced the adverse effects of lead stress on faba bean plants, and might play a key role in providing stress tolerance by stimulation of the antioxidant system as a stress protection mechanism. Eventually, the results of the present investigation clearly manifested that the addition of the stigmasterol (500 μM), to faba bean plants grown in soil contaminated by lead up to 400 mg/l, boosted plants to overcome or even reduce lead toxicity and thus obtained relatively better growth, better quality and yield, as well as better chemical composition.

____________________________________________________________________________

Helal Ragab Moussa and Manal A. Abd Alla

Beneficial Effects of Selenium for Alleviating Cadmium Toxicity in Pisum sativum L.

[Abstract] [Full-Text PDF] [html]

Abstract: Selenium (Se) has been proved to be an essential element for humans and animals. Selenium (Se) has also been found to be beneficial to plants. In Egypt, selenium deficiency in the diet is a common problem. To counteract this problem, Se compounds have been used to increase the Se content in the edible parts of crops, through foliar sprays or base application of fertilizers. Se has also been shown to counteract various abiotic stresses induced in plants by cold, drought, high light, water, salinity and heavy metals, but the associated mechanisms are rather complicated and still remain to be fully elucidated. This paper reports the effects of selenium application on some physiological characteristics of pea (Pisum sativum L. cv. Master) exposed to cadmium (Cd) stress. Thus, this study was undertaken to evaluate the effect of selenium (as sodium selenate, Na2SeO4) at recommended dose (50 μM), a promising plant development regulatory substance in alleviating the deteriorative effect of cadmium (as cadmium chloride, CdCl2) at 100 μM on pea plants.
The results revealed that cadmium-stressed pea plants treated with selenium had increased levels of photosynthetic pigments (chlorophyll a+b and carotenoids) as compared with cadmium-stressed plants. The level of antioxidant system components (superoxide dismutase, peroxidase, catalase, and glutathione peroxidase) increased in response to selenium treatment as compared to cadmium-stressed plants. Enhanced antioxidant activities helped to decrease oxidative damage from Cd and develop tolerance against cadmium stress in selenium-treated pea plants. An increase in the degree of cadmium tolerance induced by selenium was indicated by the improvement of photosynthetic pigments and consequently the photosynthetic activity. Cadmium treatments decreased the relative water content, as compared to the control plant. Meanwhile, relative water content increased in response to selenium treatment as compared to cadmium-stressed plants. Cadmium treatments decreased the macronutrient level (N, P and K) as compared to the control plants. Meanwhile cadmium-stressed pea plants pretreated with selenium had an increased level of these element contents. Se tended to counterbalance the Cd-induced changes in nutrients, it also reduced the lipid peroxidation and exerted positive effects on the cell membrane stability.
The data provided evidence that selenium treatment reduced the adverse effects of cadmium stress on pea plants, and might play a key role in providing stress tolerance by stimulation of the antioxidant system as a stress protection mechanism. Eventually, the results of the present investigation clearly manifested that the addition of the selenium (50 μM), to pea plants grown in soil contaminated by cadmium up to 100 μM, boosted plants to overcome or even reduce cadmium toxicity and thus obtained relatively better growth, better quality and yield, as well as better chemical composition.

____________________________________________________________________________

Motts Susan D, Guffey J Stephen, Payne William C, Towery Pam, Hobson Todd, Harrell Grafton, Meurer Logan, Lancaster Kristoffer

The Use of 405nm and 464nm Blue Light to Inhibit Listeria monocytogenes in Ready-to-Eat (RTE) Meat

[Abstract] [Full-Text PDF] [html]

Abstract: Foodborne illness resulting from contaminating organisms occurring in Ready-to-Eat (RTE) foods and vegetables is a serious health concern in the United States. Improved and cost-effective techniques for disinfection are needed. Visible light in the blue range (405nm and 464nm) was administered to an RTE meat product that had been inoculated with Listeria monocytogenes. One application of light energy, at doses of 10, 30, 60, 90, and 120 J/cm2, was applied, in vitro, for each wavelength of 405nm and 464nm. After 20 hours of incubation, colony forming units were counted and compared to controls to determine whether the light energy inhibited growth of L. monocytogenes. Each of the dose / wavelength combinations used in the experiment resulted in a significant inhibition of L. monocytogenes. Kill rates ranging from 69.55 – 85.25% were obtained. Blue light, delivered in the wavelength / dose combinations used in this study, is an effective in vitro inhibitor of L. monocytogenes. Blue light should be considered as a potentially effective tool in the effort to secure (in terms of disinfection of microbes) the food supply.

____________________________________________________________________________

 

Share on LinkedIn0Email this to someoneShare on Google+0Tweet about this on TwitterShare on Facebook0Share on Reddit0Pin on Pinterest0Digg thisPrint this page