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Articles 31 - 60 of 128
Full-Text Articles in Business
العلاقة بين معدل التضخم ومعدل البطالة في مناطق السلطة الوطنية الفلسطينية دراسة قياسية للفترة (1997- 2019م), Jalal Sheikhalid
العلاقة بين معدل التضخم ومعدل البطالة في مناطق السلطة الوطنية الفلسطينية دراسة قياسية للفترة (1997- 2019م), Jalal Sheikhalid
Palestine Technical University Research Journal
This study discusses the problems of both unemployment and inflation in the areas of the Palestinian National Authority, compare with the West Bank and the Gaza Strip separately, during the period (1997-2019). This study aims to show the strength of connection between unemployment and inflation in whole Palestinian economy, and the economy of both the West Bank and Gaza Strip, separately, highlighting the results of the most important statistical tests (F, T, DW, ARCH, LM, Godfrey Breusch-Pagan, White) between unemployment and inflation in the Palestinian economy as one unit, compared to the economies of the West Bank and Gaza Strip …
العوامل الاقتصادية والتنظيمية المؤثرة في تولي المرأة الموظفة للمواقع القيادية في وزارة التربية والتعليم الفلسطينية, Asem Obied, Israa Qateere, Thanaa Zaidan, Lana Ghazi, Marah Mansour
العوامل الاقتصادية والتنظيمية المؤثرة في تولي المرأة الموظفة للمواقع القيادية في وزارة التربية والتعليم الفلسطينية, Asem Obied, Israa Qateere, Thanaa Zaidan, Lana Ghazi, Marah Mansour
Palestine Technical University Research Journal
This study aimed to identify Economic and organizational factors affecting the occupying of womenemployees to leadership positions in the Palestinian Ministry of Education, and to identify the effect of the variables of job classification, qualification, and experiences. The study population consisted of (278) women employees at the Palestinian Ministry of Education and the sample was (79) employees, and they were selected in a simple random method. A questionnaire was designed consisting of (26) paragraphs distributed on both the scale of economic and organizational factors and use the descriptive approach. The results showed that the degree of economic and organizational factors …
اتجاهات معلمي الرياضيات نحو استخدام التعليم الإلكتروني في المدارس الثانوية في محافظة طولكرم, Husam Tawfiq Herzallah, Basem Shalash
اتجاهات معلمي الرياضيات نحو استخدام التعليم الإلكتروني في المدارس الثانوية في محافظة طولكرم, Husam Tawfiq Herzallah, Basem Shalash
Palestine Technical University Research Journal
This study aimed to identify the attitudes of math teachers towards the use of electronic education in the secondary schools in Tulkarm Governorate, the study also identified the impact of the study variables (gender, educational qualification, experience, and the ability to use the computer) on the attitudes of teachers. The researchers used the descriptive analytical method, the study sample consisted of (83) male and female teachers (36) of them are female teachers and the remaining others (47) are male teachers, the researchers used a questionnaire which consists of (35) items, which were applied in the second semester of the academic …
الدور الوظيفي لوسائل الإعلام في ظل جائحة كورونا دراسة ميدانية على عينة من الجمهور الفلسطيني في محافظة الخليل, Sameer Suleiman Aljamal, Basem Dawuod
الدور الوظيفي لوسائل الإعلام في ظل جائحة كورونا دراسة ميدانية على عينة من الجمهور الفلسطيني في محافظة الخليل, Sameer Suleiman Aljamal, Basem Dawuod
Palestine Technical University Research Journal
The study aimed to identify the functional role of the media in light of the Corona pandemic from the point of view of a sample of Palestinian community members in Hebron, and to uncover the existence of differences between members of the sample according to variables: (gender, age, educational qualification, place of residence). The study followed the Media survey method. The sample of the study consisted of (140) citizens from Hebron, and the questionnaire was used to collect data. The results of the study indicated an average functional role for the media in the light of the Corona pandemic. The …
توقع نمو خميرة Debaryomyces Hansenii المسببة لفساد الأغذية وذلك باستخدام التحليل الإحصائي المتعدد العوامل, Nawaf Abukhalaf, Wafa Masoud, Ali Al-Qaisi
توقع نمو خميرة Debaryomyces Hansenii المسببة لفساد الأغذية وذلك باستخدام التحليل الإحصائي المتعدد العوامل, Nawaf Abukhalaf, Wafa Masoud, Ali Al-Qaisi
Palestine Technical University Research Journal
The main aim of the present study was to predict the growth of the food spoilage yeast Debaryomyces hansenii by multivariate data analysis (MVDA) using temperature, pH and NaCl concentration as growth parameters. Growth of five strains of D. hansenii (DHI,DHII, DHIII, DHIV and DHV) was measured as optical density at 620 nm (OD620) at different values of temperature, pH and NaCl concentrations. It was found that salt was the most important factor, which affects yeast growth followed by temperature. The growth of all yeast strains was reduced by increasing salt concentration and decreasing temperature. On the other hand, pH …
تحليل أداء الأنظمة الشمسية الكهروضوئية: دراسة حالة لمحطة الطاقة الشمسية الكهروضوئية في جامعة فلسطين التقنية, Mahmoud Ismail
تحليل أداء الأنظمة الشمسية الكهروضوئية: دراسة حالة لمحطة الطاقة الشمسية الكهروضوئية في جامعة فلسطين التقنية, Mahmoud Ismail
Palestine Technical University Research Journal
Performance ratio is one of the indicators used to describe the effectiveness of the PV systems. The sustainability of the PV system year after year as well as its reliability can be checked by measuring the performance ratio each year. This indicator will also enable us to carry out a comparison between the performances of different PV systems. In this paper, the performance ratios for five PV systems installed on the roof tops of some of PTUK university buildings have been calculated on monthly and yearly basis. The analysis has been carried out using the available data (energy production and …
تقييم مستويات الاشعاع الكهرومغناطيسي في المناطق الخارجية الصادرة عن أنظمة الارسال اللاسلكية في شمال الضفة الغربية – فلسطين, Mutamed Khatib
تقييم مستويات الاشعاع الكهرومغناطيسي في المناطق الخارجية الصادرة عن أنظمة الارسال اللاسلكية في شمال الضفة الغربية – فلسطين, Mutamed Khatib
Palestine Technical University Research Journal
Exposure to electromagnetic fields is a major public concern due to the possible hazardous effects on health caused by exposure to these radiations. The aims of this study were to measure radiofrequency radiation levels from different wireless systems and to compare the results with the recommended limits by the World Health Organization (WHO) which should be less that 450 μw/cm2. The study was a cross-sectional study that was conducted in different cities and villages from the northern governorates in the West Bank; Jenin, Tulkarm, Nablus, Qalqilya, Tubas and Sal fit. To measure the radiation levels ranging from 80 MHz to …
تأثير متغيرات معالجة Rra الحرارية على الخواص الميكانيكية لسبيكة الألمنيوم عالية المقاومة 7075, Mohammad Nefawy, Fouad Dhahya
تأثير متغيرات معالجة Rra الحرارية على الخواص الميكانيكية لسبيكة الألمنيوم عالية المقاومة 7075, Mohammad Nefawy, Fouad Dhahya
Palestine Technical University Research Journal
Retrogression and Re-Aging Heat Treatment improves tensile and wear resistance of aluminum alloys, to study the effect of Retrogression temperature and Retrogression time on the tensile strength, Toughness Impact and Hardness of 7075 aluminum alloy, we have applied in this research Retrogression treatments at different temperatures are 150°C, 180°C, 240°C and 370°C for 15 min, 30 min and 90 min. When the retrogression temperature was 180°C for 30 min, the alloy has reached its highest tensile strength and hardness it was respectively 586 Mpa and 165 HB, While the alloy has reached its highest impact toughness it was 32.7 J\Cm2, …
الوعي باستخدام طلبة المرحلة الأساسية العليا لمواقع التواصل الاجتماعي على الانترنت في محافظة طولكرم, Hisham Abd-Alrahman Shanaa
الوعي باستخدام طلبة المرحلة الأساسية العليا لمواقع التواصل الاجتماعي على الانترنت في محافظة طولكرم, Hisham Abd-Alrahman Shanaa
Palestine Technical University Research Journal
This study aimed to identify Awareness of the high elementary school student' use of the social networking sites on the Internet, the study was applied on the students of Tulkarem-Palestine schools (11759) Students. The re-searcher used the analytical descriptive method because of its suitability for the purposes of the study. The sample of the study was chosen in the cluster method from 27 schools with 879 students. The researcher prepared a questionnaire consisting of (30) verifiable items. Statistical packages (SPSS) were used for data processing through the use of the following statistical processors: Percentages and arithmetic averages, single-variance analysis, alpha-Cronbach …
تقويم واقع استخدام نظام التعليم الإلكتروني (Moodle) في برنامج التعليم الجامعي في ظل جائحة كوفيد 19 من وجهة نظر طلبة التربية الرياضية في جامعات الضفة الغربية-فلسطين, Hameed Salameeh, Ali Qadoume, Motasem Abualia, Mohamed Qadoumi
تقويم واقع استخدام نظام التعليم الإلكتروني (Moodle) في برنامج التعليم الجامعي في ظل جائحة كوفيد 19 من وجهة نظر طلبة التربية الرياضية في جامعات الضفة الغربية-فلسطين, Hameed Salameeh, Ali Qadoume, Motasem Abualia, Mohamed Qadoumi
Palestine Technical University Research Journal
The study aimed to identify the degree of benefit and difficulty in using e-learning system (Moodle) in university learning Under the pandemic of Covid 19 among PES at West Bank universities-Palestine, in addition to determining the differences according to variables of gender, study level & university. The researchers used descriptive& analytic approach. The study was conducted on a random sample of (103) students Which represents a percentage of (17.13) from PTUK &An-Najah National University. In order to collect data, the researchers prepared two scales are They are (degree of benefit, degree of difficulty) from students' use of the educational Moodle …
درجة تضمين منهاج التربية الوطنية الحياتية للصفين الأول والثاني الأساسيين للمهارات الحياتية من وجهة نظر المعلمين في المدارس الحكومية في مديرية قباطية, Faisal Sabaeneh, Rajaa Swedan
درجة تضمين منهاج التربية الوطنية الحياتية للصفين الأول والثاني الأساسيين للمهارات الحياتية من وجهة نظر المعلمين في المدارس الحكومية في مديرية قباطية, Faisal Sabaeneh, Rajaa Swedan
Palestine Technical University Research Journal
The study aimed to identify the degree to which national and life education curriculum for the first and second basic grades includes the life skills from the point of view of teachers in government schools in Qabatia. Furthermore, to determine the differences according to gender and specialization variables. To achieve that, the study conducted on (72) male and female teachers, and (42) items questionnaire was applied for collecting data.The results of the study indicated that the degree to which National and life Education curriculum for the first and second basic grades includes the life skills from the point of view …
أنماط التعلم المفضلة لدى طلبة جامعة فلسطين التقنية خضوري وأثر بعض المتغيرات عليها, Murad Awadallah, Raed Frehat
أنماط التعلم المفضلة لدى طلبة جامعة فلسطين التقنية خضوري وأثر بعض المتغيرات عليها, Murad Awadallah, Raed Frehat
Palestine Technical University Research Journal
This research aimed at investigating about the preferred learning styles and the effect of some variables such as the university branch, gender, education program, academic year, specialization, and cumulative average. To achieve that, the two researchers used the Index of learning styles (ILS) developed by Felder and Solomon (Lit zingeret al., 2005) consisting of 44 items to evaluate learning preferences, and which was applied on purpose cluster sample of (345) students. After using the SPSS statistical analysis program, the results of the study show that the preferred learning style in descending order is (active-reflective, visual verbal, sequential-global, and sensing-intuitive). The …
تأثير متغيرات التعتيق الاصطناعي على مقاومة الشد والبنية المجهرية لسبيكة الألمنيوم 7075, Mohammad Nefawy, Mahmoud Al Asad
تأثير متغيرات التعتيق الاصطناعي على مقاومة الشد والبنية المجهرية لسبيكة الألمنيوم 7075, Mohammad Nefawy, Mahmoud Al Asad
Palestine Technical University Research Journal
In this research, we studied the effect of change in artificial aging time and temperature on tensile strength and Microstructure for 7075 aluminum alloy, where samples of aluminum alloy 7075 were treated with artificial aging at different temperatures are 120 ° C, 160 ° C and 200 ° C for 0.5, 1.5, 3, 18, 48 hours. When the 7075-aluminum alloy was artificially aged in of 120 ° C and 160 ° C, the values of ultimate tensile strength (UTS) of the alloy were higher than when it was aged in 200 ° C. By increasing of artificial aging time, the …
أثر الشمول المالي على أداء المصارف التقليدية المدرجة ببورصة فلسطين باستخدام نموذج Camels, Mahmoud Haj Yousef
أثر الشمول المالي على أداء المصارف التقليدية المدرجة ببورصة فلسطين باستخدام نموذج Camels, Mahmoud Haj Yousef
Palestine Technical University Research Journal
This study aimed at identifying the impact of the financial inclusion on the performance of conventional banks according to an analytical study using the American Banking Evaluation System (CAMELS) model during the period (2011-2014-2017). The study population included the conventional banks listed in Palestine stock exchange, and it was a comprehensive survey of all the study population. To achieve the objectives of the study, the researcher followed a descriptive analytical approach using the financial analysis and the multiple linear regression analysis. Moreover, the study concluded a number of findings, the most important are: The conventional banks provide a performance ranges …
مدى توافر مكونات الحمض النّووي التنظيمي Dna وأثرها في تحقيق الأداء العالي لدى العاملين في قطاع التعليم التقني الفلسطيني, Amal Elhela, Samer Arqawi, Waseem Al-Habil
مدى توافر مكونات الحمض النّووي التنظيمي Dna وأثرها في تحقيق الأداء العالي لدى العاملين في قطاع التعليم التقني الفلسطيني, Amal Elhela, Samer Arqawi, Waseem Al-Habil
Palestine Technical University Research Journal
The research aims to uncover the relationship and impact between the availability of the organizational gene components and the level of achieving high performance of the technical education employees. The researchers used the descriptive analytical method and the sample consisted of all employees of the Palestinian technical education sector who are working in the Technical University of khadori (419 employees), and Palestine Technical College –Deir El-Balah (190 employees). The random simple sample participants consisted of (236), and (194) questionnaires were received, with a response rate of (82.2). The results showed a relationship and impact between the components of the organizational …
الاستراتيجيات المقترحة للحلقة المفقودة بين مخرجات التعليم العالي ومتطلبات سوق العمل, Rawan Damaira, Jehan Damaira
الاستراتيجيات المقترحة للحلقة المفقودة بين مخرجات التعليم العالي ومتطلبات سوق العمل, Rawan Damaira, Jehan Damaira
Palestine Technical University Research Journal
The study aimed to know the proposed strategies for the lost loop between higher education outputs and labor market requirements from the perspective of Palestinian university graduates. The study sample consisted of 200 respondents, a constructed questionnaire was distributed to four Palestinian university graduates' students in north West Bank namely: (Al-Quds Open University, Anajah University, -Al-Khudouri University, and The Arab American University). The descriptive analytical method was used in this study, as the study used several statistical tools, such as frequency distribution, percentage, mean and mean average, T-test, and the one-wayanalysis of variance, and the equation for calculating Cronbach's alpha …
تحليل واقع التعليم الإلكتروني في الجامعات الفلسطينية: دراسة حالة جامعة فلسطين التقنية – خضوري/طولكرم, Hiba Khalil Almbayed
تحليل واقع التعليم الإلكتروني في الجامعات الفلسطينية: دراسة حالة جامعة فلسطين التقنية – خضوري/طولكرم, Hiba Khalil Almbayed
Palestine Technical University Research Journal
The study aimed to analyze the reality of e-learning at Palestine Technical University-Khudouri/Tulkarem, and to identify the most important challenges facing students when using the education system, as well as to analyze the extent to which university students interact with the e-learning system, and to show the differences between the average opinions of the study sample on e-learning according to the study variables due to the nature of the study, the descriptive analytical approach was used, in order to reach practical results, and to achieve and analyze the reality of e-learning a questionnaire consisting of (34) paragraphs was designed, where …
أثر أنظمة المعلومات المحاسبية على القرارات المالية للمنشآت التجارية في مدينة طولكرم, Ammar Salem
أثر أنظمة المعلومات المحاسبية على القرارات المالية للمنشآت التجارية في مدينة طولكرم, Ammar Salem
Palestine Technical University Research Journal
This study sought to highlight the effect of information accounting systems on the financial decisions (fund decisions, investment decisions, deviance earning decisions, special decisions) of commercial establishments in Tulkarem Governorate and to show which variables have the greater impact on these decisions. The researcher conducted the study using a questionnaire. He distributed questionnaires covering 300 accountants and auditors depending on the statistics of Tulkarem Chamber of Commerce and Trade in 2019. The study sample composed of 50 accountants and auditors in October 2019. To achieve the end of the study, the researcher employed arithmetic means and standard deviation. The study …
ملامحُ المقاومةِ الشعبيَّة في ديوانِ "المجدُ ينحني أمامكم" مُقتَرباتُ الموضوعِ والَّتشكيل الشعريّ, Khalel Qatanani
ملامحُ المقاومةِ الشعبيَّة في ديوانِ "المجدُ ينحني أمامكم" مُقتَرباتُ الموضوعِ والَّتشكيل الشعريّ, Khalel Qatanani
Palestine Technical University Research Journal
The study deals with the "Glory bends before you" by the poet Abdel Nasser Saleh, as an appropriate model to study the subject of popular resistance and its role in confronting the occupier through the use of popular resistance methods and means, and the statement of its foundations, and objective and poetic features. He lived the experiences of struggle and arrest in the Uprising. He practiced peaceful resistance on the homeland by his pencil and actions. The study attempts to dismantle the vocabulary of the texts of the Diwan by employing the analytical methodology in order to demonstrate the extent …
مفهوم الذات وعلاقته بالتكيف النفسي لدى الأحداث الجانحين المسجلين في وزارة التنمية الاجتماعية, Iyad Abu Bakr, Salim Odeh
مفهوم الذات وعلاقته بالتكيف النفسي لدى الأحداث الجانحين المسجلين في وزارة التنمية الاجتماعية, Iyad Abu Bakr, Salim Odeh
Palestine Technical University Research Journal
This study is aimed to identify the self-concept and its relation with psychological adaption in the delinquent juvenile, who are registered in the ministry of social development, andthe impact of some demographical variants (age, and monthly income), on the self-conception and psychological adaption on them, from the delinquent juvenile who are registered in the ministry of social development point of view ،in Ramallah and Tubas governorates. The study sample consists of all juvenile who are registered in the ministry of social development in 2016, whose number is 2460 delinquent juvenile, among them a clustered and Random sample which has been …
واقع الصحة المدرسية في مدارس محافظة الخليل الحكومية وسبل تطويرها, Hakam Hijje, Aseel Abu Zneid
واقع الصحة المدرسية في مدارس محافظة الخليل الحكومية وسبل تطويرها, Hakam Hijje, Aseel Abu Zneid
Palestine Technical University Research Journal
This study aimed at investigating the status of school health in the Governorate of Hebron and the way to develop them. The study population consisted of all teacher members of the health committees and their coordinators, in Governorate of Hebron. In academic year 2017/2018, (1482) committee members. The researcher used questionnaire to collect data. The questionnaire sample was randomly stratified, and consisted of (250) members. The researcher developed (40) items questionnaire that covers the aspects of the status of school health. The study results revealed that, the degree of estimation of the teacher members of school health and the coordinators …
درجة تطبيق مهارات التفكير التأملي في تدريس التربية الرياضية في المدارس الحكومية لمحافظة نابلس من وجهات نظر معلمي التربية الرياضية, Islam Mohammad Abbas
درجة تطبيق مهارات التفكير التأملي في تدريس التربية الرياضية في المدارس الحكومية لمحافظة نابلس من وجهات نظر معلمي التربية الرياضية, Islam Mohammad Abbas
Palestine Technical University Research Journal
This study aimed to identify the degree of applying the thinking skills in teaching physical education in public schools in Palestine from the perspectives of teachers of physical education themselves. The study found that the degree of applying the thinking skills in the field of thinking during the event received the highest degree of approval from the point of view of the teachers of physical education, followed by the field of thinking of the event in the second place. The field of reflective thinking in general received a high degree of approval, with a percentage of 73.3%. The study also …
نظرة تقييمية لآراء الخبراء في كرة الطائرة نحو تطبيق نظام الاحتراف في أندية الضفة الغربية, Ahmad Nassar, Ismael Zakarneh, Husein Qadoumi, Ghait Nassef
نظرة تقييمية لآراء الخبراء في كرة الطائرة نحو تطبيق نظام الاحتراف في أندية الضفة الغربية, Ahmad Nassar, Ismael Zakarneh, Husein Qadoumi, Ghait Nassef
Palestine Technical University Research Journal
This study aimed to an evaluation look at the opinions of experts in volleyball towards the application of the professional system in West Bank clubs, and to achieve this, the researchers used the descriptive approach due to its suitability and the nature of the objectives of the study. Organization and planning, capabilities and playgrounds, media and marketing, and game components (coaches, players and referees), the study population consisted of (70) individuals, and the study sample reached (37) individuals, accounting for 52% of the study community as follows: experts (15), and managers The technicians (trainers) (9), team administrators (7), and referees …
دَرجَةُ اسْتخدامِ نُظُمِ الْبَحْثِ والرّضا عنْها في الْمكتباتِ الفِلَسطينيّةِ في ظلِّ البيئةِ التّكْنولوجيّةِ منْ وِجْهَةِ نظرِ أُمَناءِ المكتباتِ وَالباحِثينَ, Ibrahim Khader
Palestine Technical University Research Journal
The present study aimed to identify the extent of using research systems that are the new generation for the library index, similar to the interface of the beneficiaries that allows access to all information, and satisfaction with it in Palestinian libraries in light of the technological environment from the viewpoint of librarians and researchers. It also aimed to identify whether there is any difference between the respondent’s occupational stress levels which can be attributed to their (Gender, major, library type, experience). The study’s population consists from all the all the Librarians and researchers in Palestine (West Bank and Gaza Strip). …
التأثيرات السلبية الناتجة عن استخدام الأجهزة اللوحية الذكية على الصحة الجسمية والنفسية لأطفال من عمر(13-16) سنة من وجهة نظرهم, Nuha Iter
Palestine Technical University Research Journal
The study aimed to explore the negative effects of using smart devices on the physical and psychological health of children aged (13-16) years from their perspective. The study was applied to a random sample of children aged (13-16), consisting of (102) male and female students. The descriptive method was used to answer the study questions, and a questionnaire was developed to collect data, which contains (3) sections, first section asked about the most used and preferred devices by children aged (13-16) years, and the number of hours the child used the smart device, the second one asked about the negative …
Uniaxial Strain And Optical Properties Of Gap Nanowires, Rezek Mohammad
Uniaxial Strain And Optical Properties Of Gap Nanowires, Rezek Mohammad
Palestine Technical University Research Journal
The optical properties for wurtzite (WZ) Bulk GaP and GaP nanowires (GaP-NWs) in hexagonal(circular), triangular and square cross sectional are investigated by using full potential linear augmented plane waves and local orbitals (FP-LAPW-LO) method based on density functional theory (DFT). The wurtzite nanowires are investigated with diameters limited to ~27 oA. The optical functions as a function of photon energy have been investigated for unstrained bulk WZ-GaP and WZ-GaP-NWs in the first part. Finally, the optical functions are investigated for WZ-GaP-NWs by applying uniaxial strain from -5% to +5%. The effect of cross sectional variation in the area and shape …
إثر استخدام شبكات التواصل الاجتماعية على الأداء الأكاديمي للطلبة, Abeer Qashou, Rania Abdalla
إثر استخدام شبكات التواصل الاجتماعية على الأداء الأكاديمي للطلبة, Abeer Qashou, Rania Abdalla
Palestine Technical University Research Journal
Social Network Sites (SNSs) are widely used by university students these days. The underlying reasons behind this use vary between academic and nonacademic purposes. The question is whether this use influences the students' academic performance or not. The aim of this study is to answer this question by examining the impact of five potential variables on the use of SNS, and the influence of this usage on the students' academic performance at Palestine Technical University-Kadoorie (PTUK). Five variables are included: the gender, age, faculty, duration of use, and computer self-efficacy. Stratified sampling technique was used to gather the required data, …
التحلل الضوئي للميثاميدوفوس (مبيد حشري) في الماء باستخدام اكسيد التيتانيوم النانوي البلوري المعدل بالصبغ المدعوم على أسطح الكربون المنشط, Lamees Majd, Nidal Zatar, Sameer Amereih, Hikmat Hilal
التحلل الضوئي للميثاميدوفوس (مبيد حشري) في الماء باستخدام اكسيد التيتانيوم النانوي البلوري المعدل بالصبغ المدعوم على أسطح الكربون المنشط, Lamees Majd, Nidal Zatar, Sameer Amereih, Hikmat Hilal
Palestine Technical University Research Journal
Anatase TiO2 surfaces have been treated with 2, 4, 6-triphenylpyrylium hydrogen sulfate (TPPHS) or tripyridylporhpyrinatomanganese(II) (MnP) dyes to yield the modified TiO2/ dye surfaces. The modified TiO2/dye surface was then supported onto activated carbon (AC) surfaces to yield a new class of catalytic system AC/TiO2/dye. The catalytic activities of naked TiO2, dye solution, TiO2/dye, and AC/TiO2/dye systems were examined in photo-degradation of Methamidophos (insecticide) in water, using both UV and visible light. All examined systems showed catalytic activity when used either in the UV or the visible regions, but the AC/TiO2/ dye showed the highest activity. The dye role, in …
التحقيق والتحليل التجريبي لتشغيل المحركات الحثية ثلاثية الطور في ظل حالة المرحلة الواحدة, Basem Alsayid
التحقيق والتحليل التجريبي لتشغيل المحركات الحثية ثلاثية الطور في ظل حالة المرحلة الواحدة, Basem Alsayid
Palestine Technical University Research Journal
A three-phase induction motor will continue to operate when a disturbance of some sort causesthe source voltages of the motor to become unbalanced. When an induction motor is operated at unbalanced voltage supply the performance characteristics like efficiency, power factor, input power, output power and losses are affected. The single-phasing occurs when one phase fails as a result of a fuse blowing, protective device opening on one phase of the motor, open phase on one terminal of the motor or other causes.This paper will analyze the operation of a 3-phase induction motor under normal balancedsource voltages first, then under single …
تحسين الإنتاج الزراعي باعتبارات اجتماعية واقتصادية: دراسة حالة من فلسطين, Fathi Annaya
تحسين الإنتاج الزراعي باعتبارات اجتماعية واقتصادية: دراسة حالة من فلسطين, Fathi Annaya
Palestine Technical University Research Journal
Agriculture is not only the main source of income to most Palestinian families; it is also the link to connect them to their valuable land and water resources. Farmers seek assistance from agronomists and decision makers to cultivatethe proper products. In this study, the best selection of agricultural crops is addressed in the multiple-objective context. The study deals with three conflicting objective functions: net benefit, agricultural production, and labor employment. Four-stageprocedure is adopted combining multiple-objective optimization, simple valuation methods, cluster analysis, and multiple criteria decisions making (MCDM) methods. Pareto optimal curves are used to evaluate the marginal prices of both …