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- 저자 : Saadah, Nurin Hayatus (검색결과 5 건)
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Saadah, Yasmeen,AbuHijleh, Bassam Sustainable Building Research Center 2010 International journal of sustainable building tech Vol.1 No.2
A great quantity of $CO_2$ is emitted to the atmosphere during the different phases of a building's life cycle: in the production of materials and products, in the construction of the building itself, in the setting up of the site, in the exploitation, the renovations, the later rehabilitations, up to the final demolition. The present paper shows the possibility of reducing the embodied energy in building materials up to 55% and the $CO_2$ emissions produced up to 43% in the construction phase, through a careful selection of sustainable building materials. The purpose of this study is to quantify the total amount of $CO_2$ emissions and embodied energy that can be saved by the method presented in the particular phase of the material selection within the life cycle of a building. This material selection, as well as the bioclimatic characteristics, must be defined from the early design project phase. The research presented here has been carried out as a case study on an existing high-rise residential building in the UAE constructed in a conventional way and with no specific selection of materials. The building is compared to a hypothetically created building with similar characteristics but using sustainable building materials.
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( Omar Ibrahim Saadah ),( Kholoud Bakur Fallatah ),( Cedric Baumann ),( Abdulrahman Ahmed Elbaradie ),( Fatimah Talat Howladar ),( Motaz Tariq Daiwali ),( Omar Hamad Alshuaibi ),( Majid Abdulaziz Alsa 대한장연구학회 2020 Intestinal Research Vol.18 No.2
Background/Aims: Crohn’s disease (CD) may involve the upper parts of the gastrointestinal (GI) tract including the esopha gus, stomach, and duodenum. Clinical features of upper GI CD (UGICD) are not well characterized in the Gulf region. We therefore aimed to assess the prevalence and clinical characteristics of patients diagnosed with UGICD. Methods: We per formed a retrospective analysis of all patients diagnosed with CD who underwent upper GI endoscopy between 2012 and 2017 at King Abdulaziz University Hospital, irrespective of age. Patients who had endoscopy of the upper GI tract at baseline and had histologically confirmed UGICD were included. Data on patients’ demographics, clinical characteristics, extraintestinal mani festations and complications were reviewed. Results: We identified 78 CD patients who underwent upper GI endoscopy from our medical records. The mean age was 17.2±8.7 years and 55.1% were males. Of the total, 19 out of 78 patients (24.4%) had histologically confirmed UGICD (3 esophageal, 16 gastric, and 9 duodenal), of which 52.6% were symptomatic. Disease dis tribution was ileal in 57.8%, colonic in 21.1% and ileo-colonic in 21.1%. A non-stricturing and non-penetrating phenotype was reported in 89.4%, stricturing in 5.3%, and penetrating in 5.3%. Perianal disease was found in 10.5%. UGICD was complicated by stricture formation in 2 patients (esophageal and gastric). Conclusions: The prevalence of UGICD is considered high among CD Saudi patients who undergo upper GI endoscopy at baseline, and is asymptomatic in 47.4% of patients. This reported prev alence is not dissimilar from reports originating from Western countries. (Intest Res 2020;18:210-218)
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Potentials of <i>Costus woodsonii</i> leaf extract in producing narrow band gap ZnO nanoparticles
Khan, Mohammad Mansoob,Saadah, Nurin Hayatus,Khan, Mohammad Ehtisham,Harunsani, Mohammad Hilni,Tan, Ai Ling,Cho, Moo Hwan Elsevier 2019 Materials science in semiconductor processing Vol.91 No.-
<P><B>Abstract</B></P> <P>Narrow band gap zinc oxide (ZnO) nanoparticles (NPs) were synthesized using unboiled and boiled leaf extracts of <I>Costus woodsonii</I>. The as-synthesized NPs were characterized using a range of techniques. The as-synthesized ZnO NPs were crystalline with a hexagonal wurtzite structure similar to the commercial ZnO (ZnO-C). The maximum absorbance was observed at ~390 nm for ZnO-C and the as-synthesized ZnO NPs (ZnO-UL and ZnO-BL) showed a red shift, i.e. ~448 nm to ~462 nm, hence, a lower band gap of ~2.68–2.77 eV. The band gap energy of the as-synthesized ZnO NPs was lower than that of commercial ZnO. The surface of ZnO was coated/modified with the components of the leaf extract. The as-synthesized ZnO NPs showed similar particle sizes and were spherical in shape. These studies confirmed the green synthesis of ZnO NPs using <I>Costus woodsonii</I> and the significantly reduced band gap (E<SUB> <I>g</I> </SUB> = ~2.68 eV to ~2.77 eV) of the as-synthesized ZnO NPs compared to the ZnO-C (E<SUB> <I>g</I> </SUB> = 3.18 eV).</P>
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Tawfiq Taki Al Lawati,Omar I. Saadah,Ruwaina al Riyami,Zuwaina al Yarubi 대한소아소화기영양학회 2022 Pediatric gastroenterology, hepatology & nutrition Vol.25 No.2
Purpose: Abdominal migraine (AM) is a very common functional gastrointestinal disorder in children. This study reports the clinical features and response of AM to prophylactic treatment in children. Methods: This retrospective study was conducted between January 2010 and December 2019 at the Royal Hospital in the Sultanate of Oman. This study included children aged ≤ 13 years with a diagnosis of AM based on the Rome IV criteria for functional diagnoses. Clinical, demographic, and treatment data were collected. Results: Seventy-four children were identified, of which 43 were eligible for inclusion in this study. The median age at the onset of symptoms was 7 years (range, 2–12 years). The most frequent symptoms were headache (81.4%), nausea (79.1%), and vomiting (72.1%). Of the total cohort, 46.5%, 23.3%, and 6.9% received riboflavin, pizotifen, and propranolol monotherapy, respectively. Combination therapy was also used; 16.3% of children received pizotifen and propranolol, 4.7% received riboflavin and pizotifen, and 2.3% received riboflavin and propranolol. Patients treated with propranolol monotherapy showed 100% clinical improvement and those treated with riboflavin or pizotifen monotherapy showed 90% clinical improvement. Response to combination therapy with pizotifen and propranolol was 71.4%, and with riboflavin and pizotifen was 100%. In addition, treatment response was significantly associated with the presence of vomiting (p=0.039). Conclusion: We found a favorable response to various modalities and combination treatments with riboflavin, pizotifen, and propranolol in children with AM. In addition, the presence of vomiting may predict treatment response.
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