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University of the Basque Country, Euskal Herriko Unibertsitatea
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THE FOURTH SCIENTIFIC CONFERENCE FOR ELECTRICAL ENGINEERING TECHNIQUES RESEARCH (EETR2022)
1ST INTERNATIONAL CONFERENCE ON ACHIEVING THE SUSTAINABLE DEVELOPMENT GOALS
It is difficult for a photovoltaic system to execute at maximum power since ambient temperature a... more It is difficult for a photovoltaic system to execute at maximum power since ambient temperature and solar irradiation are not constant. The performance of a photovoltaic (PV) array is nonlinear. since the features of a solar array under partial shading (PS) includes various local maximum power point (MPPs) and one global. Hereafter, it's a difficult task to follow the global maximum power point (GMPP) under partial shading conditions (PSC). To reach an optimal point should use MPPT (maximum power point tracking) controller as well as, to overcome all these issues researchers proposed different methods to capture Globel peak (GP) these strategies are classified as follows: traditional strategy; intelligent methods and hybrid, Each algorithm has advantages and disadvantages. This paper presents significant work classifying MPPT controller methods. It summarizes many MPPT techniques and their operating principles, mathematical representations, and comparison between them. Furthermore, the tables in this paper provide excellent information on the critical aspects of algorithms.
Al-Azhar Dental Journal for Girls, 2019
Purpose: The purpose of this work stayed to evaluate the expression of GRP78 as a prognostic indi... more Purpose: The purpose of this work stayed to evaluate the expression of GRP78 as a prognostic indicator of aggressiveness in tumors of the salivary gland and to relate its expression with the salivary gland tumors biological behavior. Material and Method: 80 cases of salivary gland tissues were collected as paraffin embedded blocks: 30 benign cases (15 pleomorphic adenoma and 15 Warthin's tumors) and 45 malignant cases (15 carcinoma ex pleomorphic adenomas, 15 mucoepidermoid carcinomas in addition to 15 adenoid cystic carcinoma). Additionally, 5 normal salivary gland tissues. Using GRP78 antibody, an immunohistochemical investigation was done for all specimens. Results: The greatest mean area percent of GRP78 immunoexpressioin was in malignant variants of salivary gland tumors, followed by benign variants of salivary gland tumors and the least value recorded in normal salivary gland tissue. Conclusion: According to the current study, GRP78 is considered as a useful marker for diagnosis of malignancy of salivary gland.
The research discusses the use and usefulness of Agricultural Expert Systems as information sourc... more The research discusses the use and usefulness of Agricultural Expert Systems as information source, Those Expert Systems as very important supporting tools for helping people in the decision making process, also this research discusses the role of Central laboratory of Agricultural Expert Systems (CLAES) to support and development the Agricultural Expert System as the main supportive unit to Agricultural Expert Systems in Egypt
THE FOURTH SCIENTIFIC CONFERENCE FOR ELECTRICAL ENGINEERING TECHNIQUES RESEARCH (EETR2022)
1ST INTERNATIONAL CONFERENCE ON ACHIEVING THE SUSTAINABLE DEVELOPMENT GOALS
It is difficult for a photovoltaic system to execute at maximum power since ambient temperature a... more It is difficult for a photovoltaic system to execute at maximum power since ambient temperature and solar irradiation are not constant. The performance of a photovoltaic (PV) array is nonlinear. since the features of a solar array under partial shading (PS) includes various local maximum power point (MPPs) and one global. Hereafter, it's a difficult task to follow the global maximum power point (GMPP) under partial shading conditions (PSC). To reach an optimal point should use MPPT (maximum power point tracking) controller as well as, to overcome all these issues researchers proposed different methods to capture Globel peak (GP) these strategies are classified as follows: traditional strategy; intelligent methods and hybrid, Each algorithm has advantages and disadvantages. This paper presents significant work classifying MPPT controller methods. It summarizes many MPPT techniques and their operating principles, mathematical representations, and comparison between them. Furthermore, the tables in this paper provide excellent information on the critical aspects of algorithms.
Al-Azhar Dental Journal for Girls, 2019
Purpose: The purpose of this work stayed to evaluate the expression of GRP78 as a prognostic indi... more Purpose: The purpose of this work stayed to evaluate the expression of GRP78 as a prognostic indicator of aggressiveness in tumors of the salivary gland and to relate its expression with the salivary gland tumors biological behavior. Material and Method: 80 cases of salivary gland tissues were collected as paraffin embedded blocks: 30 benign cases (15 pleomorphic adenoma and 15 Warthin's tumors) and 45 malignant cases (15 carcinoma ex pleomorphic adenomas, 15 mucoepidermoid carcinomas in addition to 15 adenoid cystic carcinoma). Additionally, 5 normal salivary gland tissues. Using GRP78 antibody, an immunohistochemical investigation was done for all specimens. Results: The greatest mean area percent of GRP78 immunoexpressioin was in malignant variants of salivary gland tumors, followed by benign variants of salivary gland tumors and the least value recorded in normal salivary gland tissue. Conclusion: According to the current study, GRP78 is considered as a useful marker for diagnosis of malignancy of salivary gland.
The research discusses the use and usefulness of Agricultural Expert Systems as information sourc... more The research discusses the use and usefulness of Agricultural Expert Systems as information source, Those Expert Systems as very important supporting tools for helping people in the decision making process, also this research discusses the role of Central laboratory of Agricultural Expert Systems (CLAES) to support and development the Agricultural Expert System as the main supportive unit to Agricultural Expert Systems in Egypt