خيارات البحث
النتائج 11 - 20 من 64
DESIGN, SET-UP CONTROL UNIT SYSTEM TO EVALUATE THE PERFORMANCE OF SOLAR ENERGY SYSTEM FOR WARMING POULTRY HOUSE
2020
Nermen Radwan | M Moustafaa | M Biomy | M Elattar
This study aims to use solar energy to warm poultry houses instead of traditional energies which have shortage and high cost of using. The prototype was designed and Fabricated at workshop of agriculture engineering research institute (AEnRI) - ARC and the experiments were conducted at Solar Energy Laboratory - Agricultural Engineering Department Faculty of Agriculture - Ain Shams University (Latitude 30° 02′ N, Longitude 31° 21′ E). Experiment was carried out during winter 2018 and 2019. The prototype was designed and fabricated from main frame was made from wood 80 cm × 80 cm × 70 cm, Trombe wall was fabricated from two different materials (bricks and concrete), bricks wall with dimension 40 cm x 70 cm x10 cm, the concrete trombe wall as following: the dimensions were 80 cm x 70 cm x10cm and changed the material to be concrete. Double of glass was mounted front of bricks or concrete wall, ventilation control system: it consists of (digital temperature controller, solenoid, moving arm, fan suction) and control unit (data logger). The results showed that the Trombe wall designed from concrete better than one of bricks. The prototype with trombe concrete wall was keeping the temperature at 30°C for 13 hour and 55 minutes of day. This system was saving 56.46% energy that consume from the traditional energy. Also, the Ten hours which the temperature drops below 30 ° C inside the poultry house, it is Compensating by lamp 100-watt that has been programmed to light when the temperature is below 30 ° C. The average weight of broiler under experimental was comparing with the standard weight of the breed. The results were higher than the standard. The death rate was 0%. The percentage of carbon dioxide and ammonia in poultry house air was not exceeding the standard ratio. And the relative humidity was (50:94(%.
اظهر المزيد [+] اقل [-]Efficacy of Zinc Foliar Application from Different Sources on Productivity and Fruit Quality of Wonderful Pomegranate trees
2020
R Amer | N Abd-Alhamid | Laila Haggag | Noha Mansour | A Korayem
Nanoparticles (NPs), especially from micronutrients, are recently motivated for replacing their common mineral counterparts. To evaluate their comparative efficacy, this investigation was conducted to estimate the impact of foliar application of zinc through different sources on productivity, fruit quality and improve marketable fruit of “Wonderful” pomegranate trees. The field experiment was performed during two seasons (2017 and 2018) on seven - year old pomegranate trees “Wonderful” cv., cultivated in a private “Hegazi” farm located at 57 km. from Cairo on the road to Alex., Egypt. Four sources of zinc named “Zinc Sulphate, Zinc mannitol complex, Bio-Nano zinc (Bio Zn NPs) and Zinc Oxide nanoparticle (ZnO NPs) with four rates from each other were sprayed twice (the first before one week from full bloom and the second after a month from the first). So the experiment included seventeen treatments in a sample study spread in a randomized complete block design by five replicates. Results explicated that the greatest significant values of fruit set% were recorded by Bio Nano Zinc (Bio Zn NPs) treatments especially (400 ppm Bio-Nano Zinc (Bio Zn NPs)). Spraying with (3000, 4000 ppm Zn mannitol complex) and (300, 400 ppm Bio-Nano Zinc (Bio Zn NPs)) showed significantly the greatest values of productivity, improves marketable fruits and fruit quality of “Wonderful” pomegranate trees. So it could be recommended by spraying “Wonderful” pomegranate trees by 3000 ppm Zinc mannitol complex or 300 ppm Bio-Nano zinc (Bio Zn NPs). Another important point is that the application of Bio Zn NPs fertilizer at around 10% from the commercial dose of zinc sulphate resulted in the same results without any change in the productivity, further researches are needed to study a further low level of Zinc Oxide nanoparticle (ZnO NPs) below (100 ppm Zinc Oxide nanoparticle (ZnO NPs)) which may be improving yield and fruit quality
اظهر المزيد [+] اقل [-]IMPACT OF PINK PIGMENTED FACULTATIVE METHYLOTROPHIC BACTERIA AS A BIO-STIMULANT ON GROWTH, HERB YIELD AND VOLATILE OIL ATTRIBUTES OF ROSEMARY (ROSMARINUS OFFICINALIS L.) PLANT
2020
Doaa Soliman | A Hosni | A Abdel Hamid | Mona Mohamed
The effect of Pink Pigmented Facultative Methylotrophic (PPFM) bacteria as a bio-stimulant on vegetative growth, macro-nutrient elements ( N,P and K ) contents , chemical constituents and volatile oil percentage and components in rosemary plant (Rosmarinus officinalis L.) were studied during 2018 and 2019 seasons. Plant height (cm), number of lateral branches/plant, herb fresh & dry weights and root fresh & dry weights of rosemary plant were all greatly affected with all applied treatments of PPFM when compared with the control. The hugest effect was recorded by 1% PPFM bacteria spraying in both studied seasons. However, no significant effect was recorded due to PPFM applied treatments on P%. Highest values of total carbohydrates were recorded by both 1 and 3%. PPFM bacteria spraying in both studied seasons. Whereas, the highest values of C/N ratios were obtained with 3% PPFM in first season and 1% PPFM in the second one. A substantial effect from PPFM bacteria spraying was observed through its effect on reducing the level of NO3 and NO2 in rosemary herb when compared with the control. In any case, 3% of PPFM bacteria spraying was more effective than other treatments in recording the least values of NO3 and NO2 in first season compared to the control. Volatile oil % was enormously increased with 3% PPFM bacteria spraying in both studied seasons than other treatments or control. The main components of volatile oil of rosemary plant were Camphor, Eucalyptol, Verbenone, Borneol, Pinene, Pinanone, Bornyl acetate and Camphene. The treatments of PPFM bacteria spraying immensely stimulated the component % in volatile oil of rosemary herb than in the control. It could be concluded that the application of PPFM bacteria as foliar spraying in rosemary plant production had many advantages especially reducing NO3 and NO2 levels and increasing volatile oil % and volatile oil fractions not to mention it increased the percent of active ingredients.
اظهر المزيد [+] اقل [-]Production of Function yogurts drink fortified with different types of herbal extracts and study its biological attributes in hepatitis rats
2020
M Al-Soud | O Elbatawy | A Abdel Fattah | Safaa Gohari | W El-Dsouky
The present study aimed to produce function yoghurt drink fortified with different types of herbal extracts (Ginger, Amla, Curcuma) and assess its therapeutic effect in hepatitis rats. The rats were randomly divided into two main groups. The first group were control (-) (6 rats) was fed on a standard diet, while the second group (30 rats) were fed on standard diet and injected it by CCl4 "for two weeks" to induce chronic damage in the liver (hepatitis) then divided into five groups (6 rats each group), then treated by plain drinking yoghurt and different herbal drinking yoghurt fortified with different types of herbs extract. Different Biological attributes were determined. The antioxidant activity, total phenolic content and chemical properties were evaluated in herbal extracts and yoghurt product and their hepatoprotective effect of each alone evaluated in albino rats against carbon tetrachloride (CCL4) induced liver injury. The hepatoprotective activity was assessed using various biochemical parameters and histopathological studies. The results indicated that functional flavoured drinking yoghurt containing herbal extract exhibited no significant differences were observed in total solids, fat, protein, ash, and lactose content them control samples. Drinking yoghurt fortified with Curcuma exhibited highest content of antioxidant activity and total phenolic content among all treatments. Also, rats fed on diet supplemented with drinking yoghurt fortified with Curcuma for 28 days showed higher potential hepatoprotective effects compared to liver injury control group (IC). The rats succeeded to restore the biochemical parameters and improved the histological alteration of the liver. This improvement was pronounced partly in the group received drinking yoghurt fortified with Ginger and Amla herbal extracts while, the group received drinking yoghurt fortified with Curcuma herbal extract were improved totally. It could be concluded that drinking yoghurt fortified with different herbal extract especially Curcuma can be used as ingredients in functional foods for people suffering from liver diseases.
اظهر المزيد [+] اقل [-]Efficiency impact of chicken manure and its tea under chemical NPK fertilizers regime on yield and quality of Molokhia (Jew’s mellow)
2020
Amal Abou El-Goud
Two field experiments were conducted to assess chicken manure (Ch.M.) and its tea on quantity and quality yield of Molokhia (Jew’s mellow) plant during two summer seasons of 2017 and 2018 in Fac. of Agric. -El-Shatby- Alexandria University. This investigate aimed to compare between chicken manure (Ch.M.R 100% and R50%) , chicken manure tea (R100% and R50%) and the mixture of them (R50% of Ch.M. + R50% of its tea) under four levels (NPK0 % , NPK30%, NPK60% and NPK100%) of chemical fertilizers. Every experiment was carried out with 13 treatments in a randomized complete block design (RCBD) with three replicates (total plot area= 2&1=2m2). The results indicated that, chicken manure tea 100% + 30% NPK(T6) gave the highest mean values of vegetative growth i.e. plant height (92.0cm), number of leaves/plant (29.5), leaf length (13.87 cm), increases in vitamin C. (110.77 mg/g F.W.) and dry weight of leaves (10.25 g) as an average of both seasons. While the mixture of “chicken manure 50% and chicken manure tea 50 %” + 30 % NPK (T10) lead to significant increases in fresh leave weight (49.84 g/plant) and total yield of fresh leaves (4.7 kg/ plot) as an average of both seasons. Highest increases in P uptake (1.37mg/g) and K uptake (20.27 mg/g) either chicken manure 100% (T1) or the mixture of “chicken manure 50% and chicken manure tea 50 %” T9, respectively. The maximum N uptake (2.79 mg/g), total chlorophyll in leaves (47.44 SPAD) and leave width (6.82 cm) as an average of both seasons by the mixture of “chicken manure 50 % and chicken manure tea 50 %” + 100 % NPK (T12) compared with the control once. Organic plants “safe food” produced with organic fertilizers and their teas really supply more nutrients and vitamins “chemical free” and health protective so used sustainably in food and environmental friendly.
اظهر المزيد [+] اقل [-]USING ARTIFICIAL NEURAL NETWORKS MODELS FOR PREDICTING WHEAT YIELD PRODUCTIVITY
2020
Mohamed Genaidy
Artificial intelligent provides diverse solutions for the complex problems in agriculture research. The study aimed to use three models of artificial neural networks (Feed Forward Neural Network (FFNN), Generalized Regression Neural Network (GRNN) and Radial-Basis Neural Network (RBNN)) in the field of wheat yield prediction. 27-year data for the period (1986-2012) were utilized to improve the models and four-year data (2013 and 2016) were used to estimate the models, to compare their outputs with the measured data. Prediction data was not entered in the process of building neural network models. The results showed that the optimal configuration of the FFNN model consists of 40 neurons in the hidden layer (8-40-1). The Tan Sigmoid activation function was used in both the hidden layer and the output layer using all of these models (anterior neural feeding network and the regression neural network and radial base neural network) in the 4-year wheat yield forecast field for production (2013-2016) by applying 8 input parameters that were result of NMMS (8.6%, 7.6% and 15.7% resp.), To find that FFNN and GRNN provide the best result from BRNN because while the information set was large or in a wide range, then the range data ranges from -1 to +1 (normalization data) , GRNN gives better outcomes after the information or sample data were in large range.
اظهر المزيد [+] اقل [-]OPTIMIZATION OF ALOCASIA AMAZONICA PROLIFERATION THROUGH IN-VITRO CULTURE TECHNIQUE
2020
Reda Abdelbaset | S.E. Mohamed | F.M. Saadawy | M. Hewidy
Excised explants were in-vitro cultured on multiplication medium of Murashige and Skoog (MS). This study was carried away inside the tissue culture lab. Horticulture Research Institute, Agricultural Research Center. Giza, Egypt through the period from 2015 to 2017, to research some factors affecting in-vitro propagation of the indoor ornamental plant Alocasia amazonica using benzyladenine amino purine (BAP) and Kinetin at 0, 1, 2, 3, 4 ppm and their interaction. The obtained results indicated that BAP gave the greatest number of shoots, plus the lowest values for shoot length, shoot fresh weight, number regarding roots and total chlorophyll content. Meanwhile, kinetin achieved the highest values for shoot length, shoot fresh weight although it was not necessarily significant. The same was observed in number of leaves, number of roots and total chlorophyll content with no significant difference. MS medium free of hormones demonstrated the greatest number of leaves, number of roots and total chlorophyll content, and the lowest values of number of shoots and shoot length. Using cytokinn at 1 ppm gave the highest shoot length and number of leaves; and the second position for number of shoot and roots. As for 2 ppm of cytokinin application, it gave the greatest values of shoot length, number of leaves and shoot fresh weight, despite the last one was not significant. this concentration got also the other position for number of shoots, 3 ppm had the greatest number of shoots, and the lowest shoot length, number of roots and shoot fresh weight and 4 ppm occupied the second grade concerning number of shoots, and the lowest grades for shoot length, shoot fresh weight, number of leaves, number of roots and total chlorophyll. Regarding the interaction between cytokinin type and concentration found that, the control treatment (Free MS) gave the highest number of leaves. Using BAP at 2 or 3 ppm attained the highest number of shoots. Using Kin at 1 or 2 ppm attained the highest shoots length. Also, Using Kin at 2 ppm attained the highest fresh weight. The application of Kin at 1 ppm was connected with the highest value of number of leaves. The development of roots showed great values on free medium of BAP and Kin as well as medium supplemented with Kin at 1 and 2 ppm. Whereas, root did not demonstrate any presence at higher concentrations of BAP of 2, 3 and 4 ppm. It is usually recommended to use the MS medium supplemented with BAP at 3 ppm which often gave the highest number of shoots. However, the highest values for shoot length, shoot fresh weight and number of roots were recorded on particularly on MS medium supplemented with Kin at 2 ppm.
اظهر المزيد [+] اقل [-]APPLICATION OF HACCP SYSTEM IN CATERING SYSTEM AND MICROBIOLOGICAL QUALITY OF ROASTED CHICKEN MEALS
2020
Hussien Swify | Yousry Abdel daim | Yahia Hammad | Mohamed Sedik
This study aimed to work out the microbiological quality of roasted chicken ready to eat meals (n=240), swabs of labor surfaces in contact with food (n=390), and the food handlers hands (n=90) in catering services within the university dormitory females to assure a secure supply of food for colleges students. The results obtained appeared no contamination with L. monocytogenes, Salmonella spp., Shigella spp., and Clostridium perfringens before the applying of the HACCP framework. While the fluctuation within the microbial numerous total viable bacteria, total molds and yeasts, B. cereus, Staph. aureus, spore-formers, and coliforms in served meals ascribed to inadequate handling or processing procedures, multiplication of microorganisms during thawing and cutting of chicken, poor hygiene of utensils, and equipment as well as the survival of microorganisms to the cooking process. The examined chicken samples from receiving to serving were 1.12×105 , 7.4 X 103, 2.8 X 104 , and 1.6 X 103 in washing chicken, thawing, and washing steps respectively. The lowest value was 3.98×103 , 3.2 X 102 , 1.2 x 103 , and 6.1 X 102 in serving, dressing, washing, and receiving steps, respectively. Swabs samples analysis which taken before and after HACCP application from handlers, utensils, equipment and work surfaces observed different levels of significance in the reduction of microbial load in one or more of selected examination. Application of the HACCP framework shows a low rate of examined microorganism with a decreasing percentage reached 100% of 1 or more microbial groups in the statistically serving step (p < 0.05) which demonstrates a critical impact of HACCP application. HACCP framework can be moreover utilize to control the safety and quality of prepared ready to eat meals, based on microbiological specifications to improve the microbiological and healthy quality of foods to reduces the reliance on the end product inspection that ultimately resulted in improving food safety, reducing costs associated with food hazards.
اظهر المزيد [+] اقل [-]THE REALITY OF THE RELATIONSHIP BETWEEN AGRICULTURAL RESEARCH AND EXTENSION ORGANIZATIONS IN IRAQ
2020
Anan Al-Ansari | Tamer Al-Janab | Jamal Alotaibi
Iraq is one of the agricultural countries in the world. Agriculture is the second source of income after oil in Iraq. Agricultural development is a link between scientific research and agricultural extension because the use of scientific knowledge in agriculture has become very important, which has prompted many countries to increase their investment in scientific research. There is a main agricultural extension department in Baghdad, in addition to agricultural extension departments in the provinces. The aim of this study was to determine the actual relationship between the agricultural research and extension organizations in Iraq throw knowing the importance of activities that achieve the relationship and implementation level according to respondents' opinions. The study aimed also to identify the barriers facing the relationship between the agricultural research and extension organizations and respondents' suggestions that strength the link between the researches and agricultural extension agents. This study was conducted on group of researchers and extension agents who work in Agricultural Extension and Cooperation Department and Agricultural Researches Department. A random sample of 40% was selected. The total was (38) agricultural extension agents and (35) agricultural researchers. A questionnaire was used as a tool for data collection. Data were analyzed using the SPSS Version 24.0 statistical software. Descriptive statistics including percentages, frequencies, means, and standard deviations, were used to summarize the data. The most important results showed that the relationship between agricultural research and extension organizations was weak, while a high percentage of respondents believed that the relationship between them was very important. The study illustrated that the most important barrier facing the relationship between the agricultural research and extension organizations was the absence of regulations and laws that organize the relationship between them. The most important suggestions that respondents believed to strengthen the relationship are the establishment of legislations that organize the relationship and work through the research and extension teams and establishment of permanent committees to coordinate the work between them. In addition, the study found that the communication between agricultural researchers and extension agents was informal. Furthermore, the study recommended that the relationship should be continued, and that multiple organizational and administrative methods should be used to strengthen the linkages between agricultural research and extension organizations. Also, the study recommended that agricultural researchers and extension agents should participate in planning and implementing agricultural extension programs.
اظهر المزيد [+] اقل [-]STUDIES ON COMPATIBILITY, FRUIT SET AND FRUIT QUALITY BY DIFFERENT POLLINATORS IN ANNA APPLE CULTIVAR
2020
Mahmoud Maklad | Mai Anwar | نظمي عبد الغني | Nahla Awad
The apple (Malus domestica) is a member of the Rosaceae family. It is older than the rose in cultivation and is often referred to as the prince of the rose family. Pollen grains of Dorsett Golden, E25 and Ein Shemer were used to investigate their compatibility and incompatibility with Anna cultivar under the Egyptian climatic conditions during two successive experimental seasons of 2016 and 2017. The fluorescence microscope was used to determine the degree of pollen tube growth in style tissue after specific pollination treatments. Degree of self and cross compatibility and or incompatibility were determined, initial, and final fruit set percentage were calculated. Pollination treatments revealed that, pollens of the four apple cultivars exhibited high rate of the viability after 24 hr. in T.T.C test. Growth of pollen tube of the tested cultivars exhibited different pattern of compatibility, the pollen tubes of Dorsett Golden and Ein Shemer cultivars showed different levels of cross-compatibility when fertilized in Anna style tissue. The pollen tube of E25 cultivar grew slowly with heavy deposition of calluses along to the tube where its growth stopped in the lower part of Anna style four days after pollination. Therefore, they need pollinizer cultivars as for good fruit set. On the other hand, Anna self-pollination seemed to be self-incompatible and recorded lowest initial of fruit set percentage in the first and second seasons. The combinations of Anna × Dorsett Golden exhibited maximum percentage of initial and final fruit set in the two seasons followed by Ein Shemer pollens in both seasons. Insignificant differences were noted in fruit weight and fruit volume among all crosses. The highest acidity was found in hybrid Anna × Dorsett Golden in except in the first season TSS values of these crosses were not high and ranged between 11.83 % and 12.83 %.
اظهر المزيد [+] اقل [-]