19 research outputs found
The Degree of Practicing Effective Leadership by Public School Principals in Bani Obeid District from the Teachers’ Point of View
No full textThe study aimed to assess the extent of effective leadership practiced by public school principals in Bani Obeid District from the perspective of teachers. The results indicated that the level of effective leadership practice by these principals was high. Furthermore, the results showed no statistically significant differences in the perceived level of effective leadership practice based on gender or years of experience. However, there were statistically significant differences related to educational qualifications, with postgraduate degree holders being perceived as practicing more effective leadership. The researcher recommends enhancing school principals\u27 moral attitudes towards teachers in all aspects of the educational and administrative process
The effect of ionizing radiation on testicular interstitial stromal cells
No full textNagasaki University (長崎大学)博士(医学)Purpose: Testis is one of the most radiosensitive tissues. Interstitial stromal cells play a supportive role in male fertility, but radiation-induced damage to those cells has not yet been well understood. We aimed to investigate radiation-induced changes in interstitial stromal cells in the testis. Methods: Adult male C57BL/6N mice (8 weeks) received a single pelvic exposure to a relatively high dose (1 Gy) or a very high dose (8 Gy) X-ray. We collected the testicular tissues for evaluation at 1, 9, and 60 days after irradiation. Results: We detected a recoverable moderate degeneration of seminiferous tubules after 1 Gy exposure but an irreversible severe damage to the testis after 8 Gy exposure. Immunostaining results revealed that 1 Gy exposure induced DNA damage at day 1, upregulated intratubular GDNF at days 1 and 9, upregulated FGF at all time points, and upregulated CSF-1R at day 9. In contrast, 8 Gy exposure induced DNA damage at days 1 and 9, upregulated intratubular GDNF at days 1 and 9, downregulated CD105 at day 60, and upregulated FGF at all time points. Conclusion: Radiation-induced dynamic changes to interstitial stromal cells in the testis. Upregulated interstitial CSF-1R and FGF2 may support spermatogenesis recovery after high-dose radiation.長崎大学学位論文 学位記番号:博(医歯薬)甲第1725号 学位授与年月日:令和7年9月19日Author: Esraa Tamam, Chen Yan, Reiko Sekiya, Tao- Sheng LiCitation: Reproductive Medicine and Biology, 24(1), art. no. e12639; 2025Nagasaki University (長崎大学), 博士(医学) (2025-09-19)doctoral thesi
Elements of museum mobile augmented reality for engaging hearing impaired visitors
No full textNowadays, designers are more concern with the issue of engagement and informal learning at museum and gallery sites.This has made studies to focus more on the use of Mobile Augmented Reality (MAR) at museum and gallery sites. However, most of the MAR applications for museum visitors are largely tailored to normal hearing visitors while the hearing-impaired (HI) visitors are not supported.The hearing impaired (HI) community account for over 5% of the world's populace which is about 360 million people.Thus, this paper explores the design elements of mobile augmented reality for engaging hearing impaired visitors at the museum site.The findings of this paper argues that there are eleven major elements of engagement of MAR needed for the design of an efficient museum MAR app for hearing impaired visitors. These eleven elements include Aesthetics, Curiosity, Usability, Interaction, Motivation, Satisfaction, Self-Efficacy, Perceived Control, Enjoyment, Focused Attention and Interest. This study pointed out that for an efficient and engaged MAR app for the HI community especially HI visitors to museum sites, these eleven elements are critical.This finding will help MAR designers and developers on how to design an efficient and engaged MAR app for the HI community at large and museum HI visitors specifically. © 2017 Author(s)
Students' Performance in Problem Based Learning and Their Attitude toward using Concept Mapping
No full textAbstract: Background: Problem Based Learning (PBL) is an innovative educational approach that adopted in several nursing schools around the world. It prepares nurses to solve problems and make effective clinical decisions in a systematic manner. Concept mapping is one of the contemporary educational strategies that enhance the PBL when incorporated into it. Aim of the study: To assess the relationship between students’ performance in PBL and their attitude toward using concept mapping at the Faculty of Nursing. Research design: A correlational descriptive design was used in this study. Setting: The study was conducted at the Faculty of Nursing in Suez Canal University. Subjects: Ninety-two first-year students were included in the study. Tools of data collection: Data were collected using two tools; students’ performance in PBL tutorial sessions and students’ attitude of using concept mapping in PBL. Results: The total score of students’ performance in PBL sessions was high, and their total score in attitude toward using concept mapping in PBL sessions was moderate. Conclusion: Nursing students have a good level of performance in PBL sessions and a moderately favorable attitude toward using concept mapping in PBL sessions. Totally, there is a significant moderate positive correlation between the students’ performance in PBL sessions and their attitude toward using concept mapping. Recommendations: Providing nursing students with a training program on using concept mapping in PBL sessions could contribute to more improvement in PBL students’ performance.
Keywords: Concept Mapping, Brainstorming, Debriefing, Students’ Performance, Problem Based Learning.
Title: Students’ Performance in Problem Based Learning and Their Attitude toward using Concept Mapping
Author: Esraa Mohammed Soltan, Fathya Abdelrazek, Wagdy Talaat
International Journal of Novel Research in Healthcare and Nursing
ISSN 2394-7330
Vol. 9, Issue 2, May 2022 - August 2022
Page No: 86-93
Novelty Journals
Website: www.noveltyjournals.com
Published Date: 15-June-2022
DOI: https://doi.org/10.5281/zenodo.6646137
Paper Download Link (Source)
https://www.noveltyjournals.com/upload/paper/Students’%20Performance%20in%20Problem-15062022-2.pdfInternational Journal of Novel Research in Healthcare and Nursing, ISSN 2394-7330, Novelty Journals, Website: www.noveltyjournals.co
Eco-conscious upcycling of sugarcane bagasse into flexible polyurethane foam for mechanical & acoustic relevance
No full textThis study explores the use of sugarcane bagasse (SCB), a byproduct of sugarcane processing, as a bio-filler in the production of flexible polyurethane foam (FPU), focusing on its benefits for both the environment and the economy. By varying the inclusion of SCB waste from 1 to 6 wt%, the research aims to enhance the FPU's mechanical and acoustic characteristics. Techniques such as Fourier transform infrared (FTIR) spectroscopy and field emission scanning electron microscopy (FESEM) were utilized to analyze the chemical structure and surface characteristics of both SCB and the FPU/SCB composites. Additionally, tests on gel fraction, density, and mechanical properties were conducted. The results indicate that adding 4 wt% SCB to FPU considerably improved the foam's properties. This modification resulted in a 148.63% increase in apparent density, a 228.47% rise in compressive strength, and a 116.24% boost in tensile strength. Furthermore, sound absorption across various frequency ranges was enhanced compared to the control foam. Additionally, the findings show that SCB effectively shifts sound absorption characteristics to lower frequencies. Specifically, at a low frequency of 500 Hz, the sound absorption coefficient increased to 0.4 with a foam thickness of 20 mm. This demonstrates that SCB can significantly improve FPU's performance, making it an attractive option for applications requiring noise mitigation, such as in the automotive and construction industries, thereby offering a sustainable solution to waste management and materials innovation.This article is published as El-Metwaly, Esraa A., Hadeel E. Mohamed, Tarek M. El-Basheer, Manal TH Moselhy, Sonia Zulfiqar, Eric W. Cochran, and Ahmed Abdelhamid Maamoun. "Eco-conscious upcycling of sugarcane bagasse into flexible polyurethane foam for mechanical & acoustic relevance." RSC advances 14, no. 33 (2024): 23683-23692.
doi: https://doi.org/10.1039/D4RA04025B. © 2024 The Author(s). This Open Access Article is licensed under a Creative Commons Attribution-Non Commercial 3.0 Unported Licence
Integrating the traditional Emirati community within urban fabric of the city to enhance the historical identity
No full textThe site of Al Ain Civic Centre consists of major vacant lands and scattered development. This site is facing many issues such as car dependency, disconnectivity, low-density development, poor quality of life, and lost identity. Even though Al Ain city is well known for its green and open spaces, yet still such spaces cannot serve this site efficiently. This is because of the poor connectivity among open spaces and oases in Al Ain. One of the suggestions is to provide major connectivity plans and functional open spaces to solve such a situation and revitalize the area as a requirement made by Abu Dhabi Urban Planning Council. This is achieved through the demonstration of green fingers in a way that collects/integrates the site as a whole with the surroundings. As a result, introducing green fingers is part of planned solutions as well as a requirement by the Abu Dhabi Urban Planning Council. Another issue is the major breakage that is represented by Al Slimi wadi. This wadi is known for its transverse site as well as its disconnected pedestrian walkways. Hence, connecting the two areas by a pedestrian bridge is one of the solutions presented in this research. More importantly, the site is considered to handle a neighborhood development with a challenge that aims to preserve, maintain, and protect the traditional Emirati housing. This kind of housing was demonstrated in Fareej form with all its required elements such as courtyard houses, Sikkas, barahas, and maidan. The project turned out to represent a master-planned community. The site claims to work as a zero-car neighborhood, with allocated accesses that lead to a parking space and a golf cart rental station. In conclusion, this neighborhood site plan/the design of this neighborhood can provide an efficiently designed urban plan that is highly walkable, friendly, accessible, and simultaneously protects the environment for its users. The concepts of connectivity and proximity are applied successfully while maintaining the heritage side and Identity of Al Ain.Heritage & Technolog
Purification of enzymatically active recombinant lysyl oxidase and lysyl oxidase-like 2 proteins from mammalian cells
No full textPLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please log in with a valid BU account to access and click Download. If you are the author of this work and would like to make it publicly available, please contact [email protected] (MSD) --Boston University, Henry M. Goldman School of Dental Medicine, 2015 (Department of Periodontology).Includes bibliography: leaves 35-36.Lysyl oxidase is a copper-dependent enzyme responsible for the development of lysine-derived cross-links in structural extracellular matrix proteins. Recent reports have revealed that LOX and possibly LOXL proteins exhibit biological effects and tissue distributions suggesting that these proteins play exceptionally important roles in biology beyond the induction of cross-linkage formation in collagen and elastin. Several new functions, as varied as tumor suppression, cellular sequence, developmental control, and chemotaxis have been assigned to LOX. The importance of LOX has been further emphasized by the findings that abnormal LOX activity contributes to a number of different diseases, including atherosclerosis, aortic aneurysms, pulmonary fibrosis, and hepatic fibrosis. Subsequent studies on the specific functions of each LOX family member is necessary to understand the mechanics of the different functions of these proteins, which will be heipfull in developing therapeutic treatments for the diseases associated with abnormal levels of LOX. The aim of this study is to purify large yields of active forms of recombinant LOX and LOXL2 from mammalian cells. It was found that the enzyme activity of the recombinant LOXL2 expressed by the purified LOXL2 celIs was 7.1 fold that of its control celIs after loading equal protein when measuring the enzyme activity which was calculated from the BCA assay prior to the amplex red assay. Expression and purification of LOXL2 in considerable amount was confirmed by Western blot. This expression and purification will aid in revealing the exact structure of LOX and its family, which will give an idea about the structure-function relationship of this protein
Cultivation-time Recommender System Based on Climatic Conditions for Newly Reclaimed Lands in Egypt
No full textAbstractThis research proposes cultivation-time recommender system for predicting the best sowing dates for winter cereal crops in the newly reclaimed lands in Farafra Oasis, The Egyptian Western Desert. The main goal of the proposed system is to support the best utilization of farm resources. In this research, predicting the best sowing dates for the aimed crops is based on weather conditions prediction along with calculating the seasonal accumulative growing degree days (GDD) fulfillment duration for each crop. Various Machine Learning (ML) regression algorithms have been used for predicting the daily minimum and maximum air temperature based on historical weather conditions data for twenty-five growing seasons (1990/91 to 2014/15). Experimental results showed that using the M5P and IBk ML regression algorithms have outperformed the other implemented regression algorithms for predicting the daily minimum and maximum air temperature based on historical weather conditions data. That has been measured based on the calculated mean absolute error (MAE). Also, obtained experimental results obviously indicated that the best cultivation-time prediction by the proposed recommender system has been achieved by the M5P algorithm, based on the seasonal accumulative GDD fulfillment duration, for the coming five growing seasons (2016/17 to 2019/20)
Author Correction: Urea intercalated encapsulated microalgae composite hydrogels for slow-release fertilizers
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