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| 1 | 调强适形放疗对深部肿瘤皮肤剂量的影响(英文)显示文摘Objective: The purpose of this study was to investigate the impact of intensity modulated radiotherapy (IMRT) on surface doses for brain, abdomen and pelvis deep located tumors treated with 6 MV photon and to evaluate the skin dose calculation accuracy of the XIO 4.04 treatment planning system. Methods: More investigations for the influences of IMRT on skin doses would increase its applications for many treatment sites. Measuring skin doses in real treatment situations would reduce the uncertainty of skin dose prediction. In this work a pediatric human phantom was covered by a layer of 1 mm bolus at three treatment sites and thermoluminescent dosimeter (TLD) chips were inserted into the bolus at each treatment site before CT scan. Two different treatment plans [three-dimensional conformal radiation therapy (3DCRT) and IMRT] for each treatment sites were performed on XIO 4.04 treatment planning system using superposition algorism. Results: The results showed that the surface doses for 3DCRT were higher than the surface doses in IMRT by 1.6%, 2.5% and 3.2% for brain, abdomen and pelvis sites respectively. There was good agreement between measured and calculated surface doses, where the calculated surface dose was 15.5% for brain tumor calculated with 3DCRT whereas the measured surface dose was 12.1%. For abdomen site the calculated surface dose for IMRT treatment plan was 16.5% whereas the measured surface dose was 12.6%. Conclusion: The skin dose in IMRT for deep seated tumors is lower than that in 3DCRT which is another advantage for the IMRT. The TLD readings showed that the difference between the calculated and measured point dose is negligible. The superposition calculation algorism of the XIO 4.04 treatment planning system modeled the superficial dose well. | H. S. Abou-Elenein Ehab M. Attalla Hany Ammar Ismail Eldesoky Mohamed Farouk Shaimaa Shoer | 2013 | The Chinese-German Journal of Clinical Oncology2013，12，4： | 0 |
| 2 | Telehealth utilization among Egyptian population and health institutional readiness:An exploratory study显示文摘Objective:This study aimed to assess the public’s perspectives and the health institutions’readiness for telehealth utilization in Egypt.Methods:A cross-sectional study design was employed,and data were collected from a convenient sample of 800 Egyptian citizens and 26 nursing administrators and information technology personnel from 16 governmental hospitals and 10 private hospitals between January and March 2022.The Egyptian community utilization of telehealth questionnaire and the telemedicine hospital readiness assessment were used to collect the data.Results:The results revealed that 35.1%of the general Egyptian population used telehealth services and 43%expressed willingness to use them in future.As perceived by the general Egyptian population,the most prevalent barriers to telehealth utilization were communication barriers(97.6%),lack of confidence in health professionals(77.6%),technological limitations(72.5%),the need for physical examination(25%),and privacy concerns(10%).Regarding hospital readiness,42%of governmental hospitals were not taking any initiative to implement telehealth services,and 15.4%were at the beginner level,meaning that some steps had been taken.However,the hospital was still far from being able to implement telehealth services.In contrast,private hospitals were either at the beginner or advanced level.Conclusion:Although the use of telehealth services in Egypt has increased,there is a need to address the barriers to public utilization and improve hospitals’readiness to implement telehealth services to enhance public usage. | Basma Mohamed OSMAN Maaly Zayed MOHAMED Shaimaa Ali Mohamed ISMAIL Lamiaa Saad Abd ALLAH Marwa Mamdouh SHABAN | 2023 | Journal of Integrative Nursing2023，5，3： | 0 |
| 3 | Effectiveness of Echinochrome on HFD‑Induced Hyperlipidemia in Rats显示文摘Obesity has been identified with an expanded danger of a progression of illnesses that include different organ-frameworks of the body.In the present examination,we evaluated the hypolipidemic properties of Echinochrome(Ech)pigment in a high-fat diet(HFD)induced hyperlipidemia in rats.After the hyperlipidemic model was set up,rats were haphazardly separated into five groups as follows:normal control group,HFD group,Atorvastatin(ATOR)group(80 mg/kg),Ech group(1 mg/kg)and combined group ATOR+Ech.The outcomes demonstrated that Ech improves lipid profile,liver functions,kidney functions and antioxidant markers of obese rats.The findings of the present investigation indicated that the Ech possesses hypolipidemic potential in obese rats. | Sohair R.Fahmy Nashwah Ismail Zaki Shaimaa Zakaria Eid Ayman Saber Mohamed Sarah S.Hassanein | 2019 | Natural Products and Bioprospecting2019，9，5： | 0 |
| 4 | Improvement of Selected Morphological, Physiological, and Biochemical Parameters of Banana (Musa acuminata L.) Using Potassium Silicate under Drought Stress Condition Grown in vitro显示文摘Drought stress has become more common in recent years as a result of climate change impacts on the production of banana crops and other fruit trees.The growth and productivity of Musa spp are severely impacted by the gradual degradation of water resources and the erratic distribution pattern of annual precipitation amount.The aim of the work includes increased drought tolerance in light of water scarcity in the world as a result of the bananas’being gluttonous for water needs.This investigation was carried out from 2019 to 2020 to study the effect of potassium silicate on morphological growth and biochemical parameters of Musa acuminata L under drought stress by PEG.As a result,drought stress reduced the morphological characteristics such as shoots number,shoot length,roots number,and survival percentage and biochemical characteristics such as chlorophyll a,b,carotenoids,stomatal status,and RWC.While proline content increased in the leaf of M.acuminata L.Media complemented with K2SiO3(2 to 6 mM)either individually or in combination with PEG led to an improvement in all morphological and biochemical characteristics.The activities of CAT,POD,and PPO enzymes increased significantly compared to control.Furthermore,the lowest PPO,CAT,and POD activity were achieved.Additionally,K2SiO3 treatments under drought stress successfully enhanced the leaf stomatal behavior.Our results suggest that K2SiO3 can help to maintain plant integrity in the tested cultivar under drought stress. | Hosny Abdel Aziz Mohamed Sharaf Magdy Omar Ahmed Abou El-Yazied Nada Ibrahim AlJwaizea Shaimaa Ismail Mohamed M.A.Omar Khadiga Alharbi Amr Elkelish Moataz Tawfik | 2023 | Phyton-International Journal of Experimental Botany2023，92，4： | 0 |
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