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The Influence of Climate Variability on the Watermelon Production in Zanzibar

Atmospheric and Climate Sciences（大气和气候科学） 2023年第1期

作者： Asya Omar hamad Kombo hamad Kai Agnes Kijazi Sara Abdalla Khamis Abdalla Hassan Abdalla Hassan Khatib Ame Masoud Makame Faki Faki Ali Ali

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二茂铁基噻吩与3-己基噻吩共聚研究

二茂铁基噻吩与3-己基噻吩共聚研究

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第十八届全国波谱学学术年会

作者： hamad Khalid 俞豪杰王立 Muhammad Akram Nasir M.Abbasi Zain-ul-Abdin Muhammad Saleem 化学工程联合国家重点实验室化学工程与生物工程学系浙江大学化学工程联合国家重点实验室化学工程与生物工程学系

＜正＞聚噻吩的超共轭结构使其具有独特的光学和电学性能,在有机太阳能电池、场效应晶体管和有机电子学方面有很好的应用前景,最近数十年来获得研究者们的关注。二茂铁基由于其可逆的氧化还原性能在化学和生物传感器方面有着应用。有文...

＜正＞聚噻吩的超共轭结构使其具有独特的光学和电学性能,在有机太阳能电池、场效应晶体管和有机电子学方面有很好的应用前景,最近数十年来获得研究者们的关注。二茂铁基由于其可逆的氧化还原性能在化学和生物传感器方面有着应用。有文献报道了噻吩与二茂铁结合起来用作有机信息存储和化学传感器等。基于这两种基团的特性,我们合成了二茂铁基噻吩（TEF）,再选用反应条件简单温和的氧化聚合法将TEF与3-己基噻吩（3HT）共聚。噻吩环上2位与5位碳参与反应失去质子。聚合过程可由1H-MNR监控,观察噻吩环上质子的

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Certification of a Multicomponent Reference Material from Natural Gas Mixture by Gravimetry and Dual GC-FID/TCD System

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Green and Sustainable Chemistry（绿色与可持续化学） 2023年第4期

作者： Adel Bassuoni Shehata Abdulrahman Rashed AlAskar Najjy hamad AlYami Abdullah Suleiman AlOwaysi

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Epidemiology and Clinical Characteristics of the First 500 Positive Cases of COVID-19. A Multicenter Retrospective Study across the Najran Region of the Kingdom of Saudi Arabia (KSA)

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Open Journal of Epidemiology 2021年第3期11卷 222-236页

作者： Hadi J. Al Sulayyim Mohammed Ch Al-Noaemi Mohammed M. Alyami Shoab Ahmad Mohammad H. Alyami hamad S. Alyami Ali D. Al-Swedan Ibraheem S. Banihameem Musallam A. Sedran Ali M. Al-Zubaidi Obaid M. Al Abbas General Directorate of Health Affairs Najran Ministry of Health Najran KSA Al-Ghad International College of Applied Medical Sciences Najran KSA Batterjee Medical College Jeddah KSA Najran University Najran KSA

Introduction: Coronavirus Disease 2019 (COVID-19) is a viral infection that was first reported in Wuhan, China on 31 December 2019. This study aimed to clarify the epidemiology and clinical characteristics of 500 first COVID-19 in the Najran region, Saudi Arabia. Material and Methods: A multi-center retrospective study design was employed to study the first 500 confirmed COVID-19 positive cases in Najran province, Kingdom of Saudi Arabia (KSA). Data were collected from 1 March 2020 until 1 July 2020 and provided by the Infection Prevention and Control (IPC) department from the hospitals. Included cases were confirmed using real-time reverse transcriptase-polymerase chain reaction (RT-PCR). Demographic, vital signs, symptoms, incubation period, travel or exposure history medical history, and comorbidities were collected. Logistic regression analysis was used to explore the association between potential risk factors associated with symptoms occurrence of COVID-19. Results: The median age of 500 COVID-19 patients was 31 years;333 (66.6%) males. A total of 34 (6.8%) were Healthcare Workers (HCWs). Out of the 500 patients, 180 (36%) had at least one comorbid disease. The most common symptoms on admission were fever 281 (56.2%), cough 266 (53.2%), shortness of breath 166 (33.2%), and malaise 113 (22.6%). Most of the patients presented with mild disease severity 310 (62%). Nationality, age, and Diabetes Miletus (DM) were independently and significantly associated with being symptomatic (P β = 2.968, CI = 2.002 - 4.400, P = 0.0010). For every 1 year increase in age, the risk of being symptomatic increased by 5.8% (β = 1.045, CI = 1.033 - 1.058, P = 0.001). Compared with non-DM patients, DM patients had a 4.05 times higher risk (β = 4.05, CI = 2.188 - 7.507, P = 0.0

关键词： Epidemiology Characteristics COVID-19 Najran KSA

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Assessing the Impacts of Climate Change and Variability on Maize (Zea mays ) Yield over Tanzania

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Atmospheric and Climate Sciences（大气和气候科学） 2021年第3期

作者： Amina Abdalla Lukali Sarah E.Osima Yunsheng Lou Kombo hamad Kai

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Levels and Distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in Marine Sediments of Eastern Bank Wesha Peninsular, Pemba Island, Tanzania

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Journal of Environmental Protection（环境保护） 2023年第7期

作者： Hassan Rashid Ali Seif hamad Khalfan Haji Mwevura Haji Said Suleiman Bakari

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The Influence of Tropical Cyclones to the Plant Productivity Indices along the Coast of Tanzania

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Atmospheric and Climate Sciences（大气和气候科学） 2021年第3期

作者： Kombo hamad Kai Yohanna Wilson Shaghude Agnes Lawrence Kijazi Christian B.Uiso

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Evaluation of the Lower Urinary Tract before Renal Transplantation: To Which Patients? How?

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Open Journal of Urology（泌尿学期刊） 2012年第3期

作者： Adnan Simsir hamad Dheir Rashad Mammadov Cuneyt Hoscoskun Huseyin Toz Ercan Ok Ceyhun Ozyurt

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Risk Factors for Postoperative Retinal Detachment Following Cataract Surgery

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Open Journal of Ophthalmology（眼科学期刊） 2019年第3期

作者： hamad Elzarrug Kevin M. Miller Yu Fei Ahmed E. M. Daifalla

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Bullying Among School Students in the UAE Society

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Psychology Research 2019年第2期9卷 45-56页

作者： Ahmad Falah Alomosh Salama Mohammad Alrahoomi Moudi Mohamed hamad Alshamsi Omaima Daham Shaban Alani University of Sharjah Sharjah UAE Family Development Center/Government of Sharjah Sharjah UAE

The purpose of this study is to research the bullying phenomenon among school students in the UAE society. This is done through showing the extent of prevalence of bullying, the rate of recurrence of bullying incidences, the most widespread forms of bullying among school children in the Emirati society, and finally, the variation with regards to the prevalence and forms of bullying as related to the student’s gender. Therefore, this study aims to probe the prevalence of this phenomenon in schools, and the frequency of bullying cases as well as its forms. For this purpose, a questionnaire was designed and conducted on a sample size of 1,309 students of both genders. The data were later analyzed using descriptive statistical and analytical metrics that are appropriate for the variables’ measurement level, and which achieve the objectives of the study. The study found that a third of the students (33.3%) were involved in bullying incidents. Furthermore, it was found that 14.2% were the party causing the bullying incident, while 19.1% were the party upon which bullying was inflicted. The study also revealed that within school premises the places where bullying was most likely to occur are corridors, and the places which students felt were the least safe are the closed spaces. As for the forms of bullying students are subjected to, offensive name calling or insults came in first place, followed by cyber/online bullying. The young age and smaller size of a student were among the most important motivators for students to bully him/her. It was also found that 32.8% of students who are exposed to bullying respond in a similar manner. The study showed that most of the bullied students (78.4%) know the person doing the bullying, the females being more cognizant of the perpetrator bullying them. Moreover, 40.7% of the students believe that the teachers and other employees are aware of the bullying taking place, female students to a greater extent than males in this regard. In t

关键词： UAE society bullying cyber bullying offensive names school administration

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