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Assessing the Impact of Regulations on Radiation Safety Culture and Practices in Radiology Departments

Journal of Applied Mathematics and Physics 2024年第8期12卷 3006-3016页

作者： saad Alqahtani Khaled Soliman Khaled Altuwayjiri Mohammed Al Shehri Yahya Jubran Alwaleed Al Hussein Nawaf Alanazi Nawaf Alanazi Fahad Alqarni Hela Alqahtani Ahmed Jowana Radiodiagnostic and Medical Imaging Department Prince Sultan Military Medical City Riyadh Saudi Arabia Medical Physics Department Prince Sultan Military Medical City Riyadh Saudi Arabia Radiology Department King Abdullah Bin Abdulaziz University Hospital Riyadh Saudia Arabia Radiology Department Prince Sultan Cardiac Center Riyadh Saudia Arabia Radiology Department Durma General Hospital Riyadh Saudi Arabia Nursing Department Alquwayiyah Primary Health Care Riyadh Saudi Arabia

Background: The need to establish a strong culture around radiation safety is derived from the assertion that medical practitioners, patients, and third parties should not be exposed to unnecessary radiation. Authorities have endeavored to enact policies to protect all employers and patients in radiology departments. Objectives: To assess the impact of radiation safety practices and regulations on the ongoing improvements in radiation safety culture and practices in radiology departments. This will be achieved through a subjective assessment of national and international rules and regulations by healthcare professionals. Materials and Methods: We conducted a questionnaire survey in the radiology departments of three JCI-accredited hospitals in the Riyadh region to identify and assess the impact of national radiation regulations and the accompanying processes on the improvement of radiation safety culture and practices in radiology departments. Results: There were statistically significant differences in the grading system results among various groups of respondents, based on their educational level. Also, there are statistically significant differences between the assessments of safety level results in the answers provided by various groups of respondents according to education level in favor of the master’s degree. Conclusion: The study concludes that technicians with a diploma degree require stricter regulation. Furthermore, the results of this study suggest that an exposure tracking system and a regulatory action supporting it may be useful in the ongoing task of improving patients’ radiation safety.

关键词： Impact Radiation Safety Culture Regulations Accreditation Practice Radiology Departments

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Genetic Analysis of Familial Mediterranean Fever among Egyptian Patients

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Open Journal of Immunology 2022年第4期12卷 137-147页

作者： Marwa A. Besar Adel Abd El Salam Asmaa F. Enein Samar Tharwat Radwan Fatma Hamdy Fouad Abeer saad Ali El Zekred Nehed Abdallah Hassan Internal Medicine (Rheumatology & Immunology) Mansoura School of Medicine Mansoura University Al Mansoura Egypt Department of Biochemistry Specialized Medical Hospital Specialised Medical Hospital Mansoura Egypt Specialised Medical Hospital Mansoura Egypt

Background: Familial Mediterranean fever (FMF) is an autoinflammatory genetic disorder that associated with different genetic mutations. Frequency of clinical manifestation differs according to age group, geographic region and ethnic population. Objectives: To study the clinical manifestation of FMF in relation to genotype (M680I, M694V, M694I and V726A). Result: The main presentation of studied group was abdominal pain 65.9% (203), followed by fever 60.4% (186) patients. (Mutation M694V) was the commonest 47.6% (297), followed by (Mutation V726A) in 32.8% (169%), then (Mutation M6802) in 23.4% (121) lastly (Mutation M6941) was in 22.1% (114) patients. Fever was highly associated with mutation (V729A) and it was statistically significant (*p value 0.047). Conclusion: Abdominal pain and fever were the most common manifestation of FMF patients. (Mutation M694V), (Mutation V726A) were the most detected mutation. Third age group;fever was associated with genetic mutation (V726A), abdominal pain with (M6941).

关键词： Familial Mediterranean Fever (FMF) MEFV Gene Mutation (M680I M694V M694I and V726A) Fever Abdominal Pain Autoinflammatory

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Cyclocondensation Reactions of Hydrazonoyl Chlorides with Some Azines: Synthesis of New Fused Heterocycles of Expected Microbiological Activity

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International Journal of Organic Chemistry 2017年第1期7卷 12-24页

作者： Mosselhi A. M. Mohamed Liala M. B. Abu-Alola Ohoud N. A. Al-Zaidi Hosam A. H. saad Department of Chemistry Faculty of Science Taif University Taif Saudi Arabia Department of Chemistry Faculty of Science Cairo University Giza Egypt Department of Chemistry College of Education & Science Taif University Taif Saudi Arabia Department of Chemistry Faculty of Science Zagazig University Zagazig Egypt

New functionalized fused heterocycles, such as, 1,3,6,9,11-pentasubstituted-pyrido[3,2-f:6,5-f']bis([1,2,4]triazolo[4,3-a]-pyrimidin-5(1H)-ones (6) and 1,3-disubstituted-7-[(E)-2-(thiophen-2-yl)ethenyl]-1,4,9,9a-tetrahydro-6H-[1,2,4]triazino[4,3-b][1,2,4,5]-tetrazin-6-ones (16) were synthesized via reaction of the hydrazonoyl chlorides (1) with 1,3,6-triphenyl-9-thioxo-9,10-dihydro-pyrimido [4,5-b]pyrido[4,5-d][1,2,4]triazolo[4,3-a]pyrimidin-5,7(1H,8H)-di-one (5) and 4-amino-6-[(2-thiophen-2-yl)ethenyl]-3-thioxo-3,4-dihydro-[1,2,4]triazin-5(2H)-one (11), respectively. The mechanism and the regioselectivity of the studied reactions have been discussed. The biological activity of the products has been evaluated against some fungi and bacteria species. The tested compounds exhibited moderate activity against the bacteria species.

关键词： Hydrazonoyl Chlorides Azines Fused Heterocycles Biological Activity

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6-烷氧基-2-甲硫基嘌呤衍生物的合成

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北京化工大学学报（自然科学版） 2012年第2期39卷 23-27页

作者：萨德于明武杜洪光北京化工大学理学院北京100029

6-烷氧基-2-烷硫基嘌呤是一类潜在的具有生理功能和药理活性的化合物。本文以2-氨基-6-氯嘌呤(1)为原料,与烯丙基溴反应得9-烯丙基-2-氨基-6-氯嘌呤(2);随后和醇钠反应,合成相应的6-位芳香亲核取代产物(3);再进一步与亚硝酸异戊酯和二... 详细信息

6-烷氧基-2-烷硫基嘌呤是一类潜在的具有生理功能和药理活性的化合物。本文以2-氨基-6-氯嘌呤(1)为原料,与烯丙基溴反应得9-烯丙基-2-氨基-6-氯嘌呤(2);随后和醇钠反应,合成相应的6-位芳香亲核取代产物(3);再进一步与亚硝酸异戊酯和二甲二硫醚发生重氮-烷硫化反应,生成9-烯丙基-6-烷氧基-2-甲硫基嘌呤(4);最后经硼氢化-氧化反应可得9-(3-和2-羟基丙基)-6-烷氧基-2-甲硫基嘌呤化合物(5和6)。经过4步反应,共合成了13种新化合物,其结构经1H-NMR、13C-NMR和HRMS等表征确证。

关键词：嘌呤重氮-烷硫化芳香亲核取代硼氢化-氧化

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Gastric Outlet Obstruction by a Hydrocholecyst. A Very Rare Variant of Bouveret Syndrome: A Case Report

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Surgical Science 2021年第9期12卷 332-337页

作者： Luis Daniel Betancourt Martínez Alberto Manuel González Chávez Mario Andrés González Chávez Jiroyoshi Enrique Muneta Kishigami Abraham Samra saad General Surgery Department Hospital Espa&#241ol Mexico City Mexico Gastroenterology Department Hospital Espa&#241ol Mexico City Mexico Geriatric Medicine Department Hospital Espa&#241ol Mexico City Mexico

It is estimated that between 0.3% - 0.5% of patients with cholelithiasis have biliary ileus, of this small proportion, only between 1% - 3% is complicated by the syndrome described in 1896 by Leon Bouveret. Bouveret syndrome refers to the obstruction of the gastric outlet tract secondary to the passage and impactation of a gallstone in the duodenum, through a cholecystoduodenal fistula. It is most common in women, between the ages of 74 - 77 and is clinically characterized by pain, bloating, incoercible vomiting and anorexia.

关键词： Bouveret Syndrome Gastric Outlet Obstruction Gallstone Hydrocholecyst Cholelithiasis Gastromegaly

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A Novel Method for PID Tuning Using a Modified Biogeography-Based Optimization Algorithm

A Novel Method for PID Tuning Using a Modified Biogeography-...

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第24届中国控制与决策会议

作者： M. M. Sayed M. S. saad H. M. Emara E. E. Abou El-Zahab the department of Electrical Power and Machines Cairo UniversityEgypt.

Proportional integral derivative （PID） controller tuning is an area of interest for researchers. This paper presents a novel method for PID controller tuning using a modified biogeography-based optimization（MBBO） algorithm. Biogeography-based optimization （BBO） is a novel evolutionary algorithm that is based on the mathematical models of biogeography. Biogeography is the study of the geographical distribution of biological organisms. In the BBO model, problem solutions are represented as islands, and the sharing of features between solutions is represented as immigration and emigration between the islands. In this paper, a modified version of the BBO is proposed to improve its convergence. The MBBO algorithm is compared with the BBO using benchmarks functions. The proposed algorithm is applied to the problem of PID controller tuning and is compared with conventional biogeography-based optimization （BBO）, and Particle swarm optimization （PSO）.

关键词： Process Control evolutionary algorithm (EA) Biogeography-Based Optimizationand PID controller

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腹腔镜治疗多囊卵巢综合征

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中国微创外科杂志 2010年第3期10卷 195-196页

作者： saad A K Amer TC Li 杨硕(翻译) 马彩虹(审校) Department of Obstetrics and Gynaecology Derby City General HospitalThe Medical SchoolNottingham University 北京大学第三医院妇产科北京100191

1简介多囊卵巢综合征(polycystic ovarian syndrome,PCOS)是一种常见的内分泌疾病,在育龄期女性中的发病率为6%－8%,是导致无排卵性不孕最常见的原因(约75%)。诊断依据临床表现(肥胖、月经稀发/闭经,多毛),生化改变(血清黄体生成素及雄... 详细信息

1简介多囊卵巢综合征(polycystic ovarian syndrome,PCOS)是一种常见的内分泌疾病,在育龄期女性中的发病率为6%－8%,是导致无排卵性不孕最常见的原因(约75%)。诊断依据临床表现(肥胖、月经稀发/闭经,多毛),生化改变(血清黄体生成素及雄激素水平升高)及超声影像特点(卵巢多囊样增大)。PCOS患者还可能存在胰岛素抵抗及代偿性的高胰岛素血症。[第一段]

关键词：多囊卵巢综合征内分泌疾病育龄期妇科疾病

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On the Top of Mountains Realizing a lifelong dream of mountaineering in China

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ChinAfrica 2019年第12期11卷 58-58页

作者： Mahmoud saad Diab 不详

I have cherished the dream of climbing mountains from a very early age. But I had to suppress my urge for mountain-eering as there are not that many mountains in Egypt. Though Sinai has some moun-tains, I didn't find ... 详细信息

关键词： dream mountains mountain

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Drug eluting biliary stents to decrease stent failure rates:Areview of the literature

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World Journal of Gastrointestinal Endoscopy 2016年第2期8卷 77-85页

作者： Joseph Shatzel Jisoo Kim Kartik Sampath Sharjeel Syed Jennifer saad Zilla H Hussain Kabir Mody J Marc Pipas Stuart Gordon Timothy Gardner Richard I Rothstein Section of Hematology-Oncology Dartmouth Hitchcock Medical CenterLebanonNH 03756United States Geisel School of Medicine at Dartmouth HanoverNH 03755United States Section of Gastroenterology Dartmouth Hitchcock Medical CenterLebanonNH 03756United States Section of Internal Medicine Dartmouth Hitchcock Medical CenterLebanonNH 03756United States Mayo Clinic Cancer Center Section of Hematology/OncologyMayo Clinic FloridaJacksonvilleFL 32224United States

Biliary stenting is clinically effective in relieving both malignant and non-malignant obstructions. However, there are high failure rates associated with tumor ingrowth and epithelial overgrowth as well as internally from biofilm development and subsequent clogging. Within the last decade, the use of prophylactic drug eluting stents as a means to reduce stent failure has been investigated. In this review we provide an overview of the current research on drug eluting biliary stents. While there is limited human trial data regarding the clinical benefit of drug eluting biliary stents in preventing stent obstruction, recent research suggests promise regarding their safety and potential efficacy.

关键词： Bile ducts Cholangiocarcinoma Endoscopy Pancreas

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旋转防喷器外壳体的有限元分析与优化设计

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机电产品开发与创新 2024年第2期37卷 6-10页

作者：田海疆 Ismail saad YOONG Hou Pin 王翠凤福建信息职业技术学院智能制造学院福建福州350003 沙巴大学工程学院马来西亚沙巴州亚庇马来西亚88670

针对国外生产的一款旋转防喷器,使用三维造型软件中望3D建立该型号旋转防喷器的三维实体模型;将底座外壳体三维实体模型导入ANSYS软件中,通过有限元分析,求解出了外壳体的应力强度分布情况,设定两条路径分别进行等效线性化,获得了两条... 详细信息

针对国外生产的一款旋转防喷器,使用三维造型软件中望3D建立该型号旋转防喷器的三维实体模型;将底座外壳体三维实体模型导入ANSYS软件中,通过有限元分析,求解出了外壳体的应力强度分布情况,设定两条路径分别进行等效线性化,获得了两条路径上的一次整体薄膜应力、一次局部薄膜应力、一次弯曲应力、二次应力和峰值应力,校核了旋转防喷器底座外壳体的强度;通过ANSYS WorkBench仿真平台对底座外壳体进行了优化设计,获得了底座外壳体的优化参数。

关键词：旋转防喷器有限元分析优化设计 ANSYS

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