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Thermodynamic Analysis of Alternative Marine Fuels for Marine Gas Turbine Power Plants

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Journal of Marine Science and Application 2016年第1期15卷 95-103页

作者： Mohamed M. El Gohary nader R. Ammar Marine Engineering Department Faculty of Maritime Studies King Abdulaziz University Jeddah 21589 Kingdom of Saudi Arabia Department of Naval Architecture and Marine Engineering Alexandria University Alexandria 21544 Egypt

减少引擎的海洋的发货工业脸挑战从轮船用尽排出物和温室气体(GHG ) ，并且特别地，二氧化碳。象国际海上的组织和许多国家的国家环境机构那样的国际规章的身体发出了规则和规定急速地减少从海洋的来源发出的 GHG 和排出物。这研究调查... 详细信息

减少引擎的海洋的发货工业脸挑战从轮船用尽排出物和温室气体(GHG ) ，并且特别地，二氧化碳。象国际海上的组织和许多国家的国家环境机构那样的国际规章的身体发出了规则和规定急速地减少从海洋的来源发出的 GHG 和排出物。这研究调查使用选择为海洋的煤气的汽轮机造成到柴油并且使用一个数学模型在煤气的汽轮机上估计这些其他的燃料的效果的天然气和氢的可能性热力学的性能。自从天然气作为烃燃料被分类，结果显示出那，用天然气的煤气的汽轮机周期的热力学的表演接近了柴油机案例的。然而，热效率被发现为天然气和氢稍微更低的煤气的汽轮机与柴油相比造成。

关键词：燃气轮机循环海洋运输业船用燃料热力学分析发电厂国际海事组织燃气涡轮机热力学性能

Predictive value of Hajibandeh index in determining peritoneal contamination in acute abdomen:A cohort study and meta-analysis

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World Journal of Gastrointestinal Surgery 2023年第12期15卷 2747-2756页

作者： Shahab Hajibandeh Shahin Hajibandeh Louis Evans Bethany Miller Jennifer Waterman Suhaib JS Ahmad Jay Hale Adnan Higgi Bethan Johnson Dafydd Pearce Ahmed Hazem Helmy nader Naguib Andrew Maw Department of General Surgery University Hospital of WalesCardiff CF144XWUnited Kingdom Department of General Surgery Royal Stoke University HospitalStoke-on-Trent ST46QGUnited Kingdom Department of General Surgery Ysbyty GwyneddBangor LL572PWUnited Kingdom Department of General Surgery Royal Glamorgan HospitalPontyclun CF728XRUnited Kingdom Department of General Surgery Glan Clwyd HospitalRhyl LL185UJUnited Kingdom

BACKGROUND Hajibandeh index(HI),derived from combined levels of C-reactive protein,lactate,neutrophils,lymphocytes and albumin,is a modern predictor of peritoneal contamination and mortality in patients with acute abdominal *** To validate the performance of HI in predicting the presence and nature of peritoneal contamination in patients with acute abdominal pathology in a larger cohort study and to synthesis evidence in a systematic review and *** The STROBE guidelines and the PRISMA statement standards were followed to conduct a cohort study(ChiCTR2200056183)and a meta-analysis(CRD420-22306018),*** adult patients undergoing emergency laparotomy for acute abdominal pathology were *** accuracy of the HI was evaluated using receiver operating characteristic(ROC)curve analysis in the cohort study and using weighted summary area under the curve(AUC)under the fixed and random effects modelling in the *** Quality Assessment of Diagnostic Accuracy Studies 2 criteria were used for methodological quality assessment of the included *** A total of 1437 patients were included(700 from the cohort study and 737 from the literature search).ROC curve analysis of the cohort study showed that the AUC of HI for presence of contamination,purulent contamination and feculent contamination were 0.79[95%confidence interval(CI):0.76-0.82,P<0.0001],0.76(95%CI:0.72-0.80,P<0.0001),and 0.83(95%CI:0.79-0.86,P<0.0001),*** meta-analysis showed that the pooled AUC of HI for presence of contamination,purulent contamination and feculent contamination were 0.79(95%CI:0.75-0.83),0.78(95%CI:0.74-0.81),and 0.80(95%CI:0.77-0.83),*** The HI is a strong and accurate predictor of intraperitoneal *** the available evidence is robust,it is limited to the studies conducted by our evidence synthesis *** encourage other researchers to validate performance of HI in predicting the pr

关键词： Hajibandeh index Laparotomy Mortality Peritonitis Contamination

Two-point compression ultrasonography: Enough to rule out lower extremity deep venous thrombosis?

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World Journal of Emergency Medicine 2021年第4期12卷 268-273页

作者： Ralphe Bou Chebl nader El Souki Mirabelle Geha Imad Majzoub Rima Kaddoura Hady Zgheib Department of Emergency Medicine American University of BeirutBeirut 11072020Lebanon

BACKGROUND: Deep venous thrombosis(DVT) is a major cause of morbidity and is a common presenting complaint to the emergency department(ED). Point-of-care two-point compression ultrasonography has evolved as a quick and effective way of diagnosing DVT. The purpose of this study is to validate the prevalence and distribution of venous thrombi isolated to proximal lower extremity veins, other than common femoral and popliteal veins in patients with ***: This is a single-center retrospective study that looked at patients presenting to the ED of a tertiary care hospital between January 2014 and August 2018. The clinical presentation and laboratory and imaging results were obtained using the hospital's electronic medical ***: A total of 2,507 patients underwent a lower extremity duplex ultrasound during the study period. Among them, 379(15%) were included in the study. The percentages of isolated thrombi to the femoral vein and deep femoral vein were 7.92% and 0.53%, respectively. When the patients were stratified into the two groups of isolated DVT and two-point compression DVT, there were no statistically significant differences in the laboratory results between both groups. However, immobilized patients and patients with recent surgeries were more likely to have an isolated ***: Thrombi isolated to proximal lower extremity veins other than the common femoral and popliteal veins make up 8.45% of DVTs. Given this significant number of missed DVTs, the authors recommend the addition of the femoral and deep femoral veins to the two-point compression exam.

关键词： Lower extremity Deep venous thrombosis Emergency department Two-point compression ultrasonography

N-Methylimidazolium perchlorate as a new ionic liquid for the synthesis of bis(pyrazol-5-ol)s under solvent-free conditions

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Chinese Chemical Letters 2016年第1期27卷 104-108页

作者： nader Ghaffari Khaligh Sharifah Bee Abd Hamid Salam J.J.Titinchi Nanotechnology & Catalysis Research Centre NANOCAT University Malaya Department of Chemistry University of the Western Cape

N-Methylimidazolium perchlorate（[MIm]ClO_4） was synthesized and some of its physico-chemical properties, such as density, surface tension were investigated. A thermo gravimetric analysis（TGA） and solvent performance were also studied. The results show that this ionic liquid is an excellent catalyst for the synthesis of 4,4＇-（arylmethylene）bis（1H-pyrazol-5-ol） derivatives under solvent-free *** method has the advantages of high yield, clean transformation, simple operation and short reaction time. The ionic liquid can be recycled without significant loss of activity.

关键词： Ionic liquid N-Methylimidazolium perchlorate Bis(pyrazol-5-ol)s Recycle

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一种新颖的微空心阴极放电等离子体推力器

固体火箭技术 2008年第6期31卷 565-568页

作者：夏广庆毛根旺 nader Sadeghi 西北工业大学航天学院西安710072 光谱物理实验室约瑟夫·傅立叶大学＆法国国家科学研究中心法国格勒诺布尔38041

微小卫星的发展和成功应用迫切需要新型微推力器的研制。微放电技术是等离子体放电中重要的一类,近几十年来成为各国的研究热点。其中,微空心阴极放电(MHCD)是一种新颖的非平衡高气压辉光放电,其优点是可以在高气压下稳定放电,并且只需... 详细信息

微小卫星的发展和成功应用迫切需要新型微推力器的研制。微放电技术是等离子体放电中重要的一类,近几十年来成为各国的研究热点。其中,微空心阴极放电(MHCD)是一种新颖的非平衡高气压辉光放电,其优点是可以在高气压下稳定放电,并且只需要非常低的电压(几百伏特)或者输入功率(百毫瓦数量级)。MHCD建立在2个几百微米厚度的金属平面电极上,材料可以是钼、铝等,由电介质(云母或氧化铝)隔开。"三明治"的布局结构上从一个电极到另一个电极钻有直径为几十微米到几百微米的孔,气体压强可以很高,甚至超过大气压。微空心阴极放电较小的尺寸结构与强烈并可控的气体加热相结合,可以开发应用在新型的电热式微等离子体推进上。由于微空心阴极放电等离子体推力器在微放电等离子体中加热了工质气体,随后通过微喷管喷出产生推力,因此与传统的冷气微推力器相比,可大大提高推力器的比冲和推力。

关键词：微空心阴极放电电推进微推力器纳卫星推进

Transplantation of CD34+cells for myocardial ischemia

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World Journal of Transplantation 2021年第5期11卷 138-146页

作者： Anthony Matta Vanessa nader Michel Galinier Jerome Roncalli Department of Cardiology Institute CARDIOMETUniversity Hospital of ToulouseToulouse 31059France Faculty of Medicine Holy Spirit University of KaslikKaslik 00000Lebanon Faculty of Pharmacy Lebanese UniversityBeirut 961Lebanon

CD34+cells are multipotent hematopoietic stem cells also known as endothelial progenitor cells and are useful in regenerative ***,these cells are mobilized from the bone marrow into peripheral circulation in response to ischemic tissue ***34+cells are known for their high proliferative and differentiation capacities that play a crucial role in the repair process of myocardial *** have an important paracrine activity in secreting factors to stimulate vasculogenesis,reduce endothelial cells and cardiomyocytes apoptosis,remodel extracellular matrix and activate additional progenitor *** they migrate to the target site,they enhance angiogenesis,neovascularization and tissue *** trials have demonstrated the safety and efficacy of CD34+cell therapy in different settings,such as peripheral limb ischemia,stroke and cardiovascular ***,we review the potential utility of CD34+cell transplantation in acute myocardial infarction,refractory angina and ischemic heart failure.

关键词： Cell therapy Endothelial progenitor cells Myocardial ischemia Refractory angina Heart failure Coronary microvascular dysfunction

Evaluation of extracts and essential oil from Callistemon viminalis leaves:Antibacterial and antioxidant activities,total phenolic and flavonoid contents

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Asian Pacific Journal of Tropical Medicine 2013年第10期6卷 785-791页

作者： Mohamed ZM Salem Hayssam M Ali nader A El-Shanhorey Ahmed Abdel-Megeed Forestry and Wood Technology Department Faculty of Agriculture(EL-Shatby)Alexandria University Botany and Microbiology Department College of ScienceKing Saud University Timber Trees Research Department Sabahia Horticulture Research StationHorticulture Research InstituteAgriculture Research Center Department of Botanical Gardens Research Horticultural Research Institute(ARC) Faculty of Agriculture(Saba Basha) Alexandria University

Objective:To investigate antioxidant and antibacterial activities of Callistemon viminalis(***)***:The essential oil of *** leaves obtained by hydrodistillation was analyzed by GC/*** extracts were tested for total phenolic and flavonoid contents and in vitro antioxidant(DPPH assay)and antibacterial(agar disc diffusion and 96-well micro-plates methods)***:Fourteen components were identified in the essential oil,representing 98.94%of the total *** major components were 1,8-cineole(64.53%)andα-pinene(9.69%).Leaf essential oil exhibited the highest antioxidant activity of(88.60±1.51)%comparable to gallic acid,a standard compound[(80.00±2.12)%].Additionally,the biggest zone of inhibitions against the studied bacterial strains was observed by the essential oil when compared to the standard antibiotic(tetracycline).The crude methanol extract and ethyl acetate fraction had a significant antibacterial activity against the tested bacterial ***:It can be suggested that *** is a great potential source of antibacterial and antioxidant compounds useful for new antimicrobial drugs from the natural *** present study revealed that the essential oil as well as the methanol extracts and ethyl acetate fraction of *** leaves exhibited highly significant antibacterial activity against the tested bacterial strains.

关键词： Callistemon viminalis Essential oil Antibacterial activity Antioxidant activity Phenolic content Flavonoid content

Complications of intrastromal bevacizumab injection in lamellar keratoplasty

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International Journal of Ophthalmology(English edition) 2020年第2期13卷 356-358页

作者： Mohammad Soleimani Ahad Shahbazi nader Mohammadi Seyed Ali Tabatabaei Ocular Trauma and Emergency Department Eye Research CenterFarabi Eye HospitalTehran University of Medical SciencesTehran ***Iran

Dear Editor,We would like to report complications of intrastromal bevacizumab injection for corneal neovascularization(CNV)after lamellar keratoplasty(LK)in two *** is a significant risk factor for graft *** leads to graft failure by disturbing the immune function of the cornea after penetrating keratoplasty(PKP).Studies reported that more than fifty percent of graft failure occurs in this condition[1].

关键词： bevacizumab Complications lamellar keratoplasty

加热与超声辐照条件下4-(丁二酰亚胺基)-1-丁烷磺酸Brnsted酸催化剂催化吡喃并[4,3-b]吡喃衍生物合成(英文)

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催化学报 2015年第5期36卷 728-733页

作者： nader Ghaffari Khaligh Sharifah Bee Abd Hamid Nanotechnology & Catalysis Research Centre NANOCAT University Malaya

4-(Succinimido)-1-butane sulfonic acid was shown to be an efficient and reusable Brnsted acid catalyst for the synthesis of pyrano[4,3-b]pyran derivatives using thermal and ultrasonic conditions. The catalyst was prepared by mixing succinimide and 1,4-butanesultone, which is simpler and safer than the preparation of succinimide sulfonic acid. This method has the advantages of high yield, clean reaction, simple methodology, and short reaction time. The catalyst can be recycled without loss of activity.

关键词：吡喃衍生物琥珀酰亚胺超声波照射酸催化剂亚胺基磺酸布朗丁烷