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| 1 | MC4R、POU1F1基因对京海黄鸡生长性能的遗传效应显示文摘以MC4R和POU1F1基因为候选基因,采用PCR-SSCP和DNA测序技术检测两个候选基因在京海黄鸡群体中的单核苷酸多态性(SNPs),同时对候选基因与京海黄鸡生长性能的相关性进行了研究。结果表明,MC4R基因编码区第662bp位置有G→C碱基的点突变,在京海黄鸡中检测到AA、AB、BB3种基因型,A等位基因频率为0.929,B等位基因频率为0.071;在POU1F1基因exon3在序列的第5231bp位置有一个A→T碱基的点突变,检测到CC、CD、DD3种基因型,C等位基因频率为0.500,D等位基因频率为0.500。采用GLM模型分析基因型对生长性能的遗传效应,结果表明,MC4R基因AA基因型个体的4、8、12周龄体重显著地高于BB型个体(P<0.05),16周龄体重差异极显著(P<0.01);POU1F1基因CD基因型个体体重极显著高于CC型和DD型(P<0.01)。因此推测MC4R和POU1F1基因可能是影响鸡生长性状的主效基因或与主效基因紧密连锁的标记基因,能够在分子标记辅助选择中用于对鸡生长性状的遗传改良。 | 陶勇 李国辉 胡玉萍 M. Dafalla Mekki 陈宽维 王金玉 | 2008 | 遗传2008，30，7： | 17 |
| 2 | Airway foreign bodies: A critical review for a common pediatric emergency显示文摘BACKGROUND:Airway foreign bodies(AFBs)is an interdisciplinary area between emergency medicine,pediatrics and otolaryngology.It is a life-threatening condition that is not infrequently seen;however,it is poorly covered in medical literature.Accidental aspiration of an element into airways is a widespread clinical scenario among children under 3 years,predominantly males.Moreover,it is the leading cause of infantile deaths and the fourth one among preschool children.DATA RESOURCES:A systemic search was conducted in July 2015 using Pub Med/Pub Med Central Database of The National Center for Biotechnology Information(NCBI)(http://gffzz16a62c593b5540cehb9vunpncnu666wc9.ffgz.tsg.suse.edu.cn/).A total of 1 767 articles were identified and most of them were meta-analyses,systematic reviews,and case series.Those thoroughly discussing assessment and management of AFBs were retrieved.RESULTS:AFBs episodes may be either witnessed or missed.Presence of a witness for the inhalation is diagnostic.The later usually present with persistent active cough.A classical triad of paroxysmal cough,wheezing,and dyspnoea/decreased air entry was reported,though many presentations have inconsistent findings.Hence,diagnosis requires high index of clinical suspicion.Flexible fibro-optic bronchoscopy is the gold standard of diagnosis,whereas inhaled objects are best retrieved by rigid bronchoscopes.CONCLUSIONS:Close supervision of pediatrics is the hallmark of prevention.Caregivers should ensure a safe surrounding milieu,including the toys their offspring play with.Immediate complications result from direct obstruction or injury by the inhaled object.Alternatively,prolonged lodging traps air and induces inflammatory response causing atelectesis and pneumonia,respectively. | Alaaddin M Salih Musab Alfaki Dafalla M Alam-Elhuda | 2016 | World Journal of Emergency Medicine2016，7，1： | 16 |
| 3 | 空气流量对空冷燃料电池电堆性能的影响研究显示文摘空冷型氢燃料电池采用开放型阴极,具有自增湿、系统简单轻便等特点。为了揭示空气流量对输出性能的影响机制,对自组装的800 W空冷型燃料电池电堆进行了实验测试和数值分析,对比了不同空气风扇转速下电堆输出电压、净功率以及传质传热特性。结果表明:小电流条件下小空气流量可以保持电堆内较高的温度,减少活化损失,实现高净输出功率。然而,大电流条件下,小空气流量将导致电堆温度过高且分布不均匀。利用数值方法对组分和温度分布进行了可视化分析,结果表明低含水量引起的欧姆损失增加是限制输出功率的关键因素,通过提高风扇转速增加空气流量可以保证较好的冷却效果,从而提高含水量,减少欧姆损失。 | 魏琳 郭剑 廖梓豪 Ahmed Mohmed Dafalla 蒋方明 | 2022 | 化工学报2022，73，7： | 2 |
| 4 | Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells显示文摘Water transport is of paramount importance to the cold start of proton exchange membrane fuel cells(PEMFCs).Analysis of water transport in cathode catalyst layer(CCL)during cold start reveals the distinct characteristics from the normal temperature operation.This work studies the effect of CCL mesoscopic pore-morphology on PEMFC cold start.The CCL mesoscale morphology is characterized by two tortuosity factors of the ionomer network and pore structure,respectively.The simulation results demonstrate that the mesoscale morphology of CCL has a significant influence on the performance of PEMFC cold start.It was found that cold-starting of a cell with a CCL of less tortuous mesoscale morphology can succeed,whereas starting up a cell with a CCL of more tortuous mesoscale morphology may fail.The CCL of less tortuous pore structure reduces the water back diffusion resistance from the CCL to proton exchange membrane(PEM),thus enhancing the water storage in PEM,while reducing the tortuosity in ionomer network of CCL is found to enhance the water transport in and the water removal from CCL.For the sake of better cold start performance,novel preparation methods,which can create catalyst layers of larger size primary pores and less tortuous pore structure and ionomer network,are desirable. | Ahmed Mohmed DAFALLA Fangming JIANG | 2021 | Frontiers in Energy2021，15，2： | 2 |
| 5 | Morbidity associated withSchistosorma mansoni infection detenmined by ultrasound: a study in Gezira, Sudan 显示文摘 | Homelda M Akmed S Dafalla A | 1988 | Am J Trod Med Hw1988，39，： | 1 |
| 6 | Effect of erythromycin before endoscopy in patients presenting with variceal bleeding: a prospective, randomized, double-blind, placebo-controlled trial显示文摘 | Ibrahim Altraif Fayaz A. Handoo Abdulrahman Aljumah Abduljaleel Alalwan Mutasim Dafalla Abdullah Mohamed Saeed Abdulrahman Alkhormi Abdul Karim Albekairy Hani Tamim | 2011 | Gastrointestinal Endoscopy2011，，2： | 1 |
| 7 | Soda-AQ pulping of sunflower stalks显示文摘 | Khristova P Bentcheva S Dafalla S | 1998 | Industrial Crops and Products1998，，9： | 1 |
| 8 | Effect of ochratoxin A on Lohmann-type chicks显示文摘 | Ayed I A Dafalla R Yagi A I | 1991 | Vet Hum Toxicol1991，33，： | 1 |
| 9 | Design guide for rigid foundation systems on expansive soils显示文摘 | Dafalla M A Shamrani M A Puppala A J | 2012 | International Journal of Geomeehanies2012，12，5： | 1 |
| 10 | Effects of various levels ofdietary selenium on hybro-type chicks 显示文摘 | DAFALLA R ADAM S E | 1986 | Veterinaryand Human Toxicology1986，28，2： | 1 |
| 11 | Swelling Characteristics of Saudi Tayma Shale and Consequential Impact on Light Structures显示文摘 | Muawia A. Dafalla Mosleh A. Al-Shamrani | 2014 | Journal of Civil Engineering and Architecture2014，8，5： | 1 |
| 12 | First report of Cucurbit chlorotic yellows virus infecting muskmelon and cucumber in Sudan 显示文摘 | Hamed K Menzel W Dafalla G | 2011 | Plant Disease2011，95，11： | 1 |
| 13 | Active principle from Moringa oleifra Lam leaves effective against two leukemias and a hepatocarcinoma 显示文摘 | Khalafalla MM Abdellatef E Dafalla HM | 2010 | Afr Biotechnol2010，9，49： | 1 |
| 14 | First Report of Cucurbit chlorotic yellows virus infecting muskmelon and cucumber in Sudan显示文摘 | HAMED K MENZEL W DAFALLA G | 2012 | Plant Disease2012，95，11： | 1 |
| 15 | Mycoplasma-like organisms associated with little leaf disease of Eucalyput microtheca Muell 显示文摘 | Dafalla G A Theveu E Cousin M T | 1986 | Journal of Phytopathology1986，117，1： | 1 |
| 16 | A critical state two-surface plasticity model for sands 显示文摘 | Manzari M T Dafallas Y F | 1997 | Geotechnique1997，47，2： | 1 |
| 17 | Does an immune reaction to sebum in wounds cause keloid scars? Beneficial effect of desensitisation 显示文摘 | Yagy K Dafalla AA Osman AA | 1979 | Br J Plast Surg1979，32，3： | 1 |
| 18 | Soda-AQ pulping of sunflowerstalks显示文摘 | KHRISTOVA P BENTCHEVA S DAFALLA S | 1998 | Industrial Crops and Products1998，，9： | 1 |
| 19 | 夹紧压力对PEMFC冷启动性能的影响显示文摘质子交换膜燃料电池(PEMFC)作为一种电化学装置,以其高效、低排放、结构紧凑、静音等优点,被认为是未来最具有潜力的发电系统,然而其在低温环境下的快速启动是车用燃料电池面临的重要挑战之一。本文采用有限元法和非等温冷启动数值模型对夹紧压力作用下PEMFC的变形及非等温冷启动过程进行了求解,分析了扩散层厚度及非均匀变形对传质传热、电流密度和冰分布以及输出电压特性的影响。结果表明,扩散层非均匀变形会增加脊下区域传质阻力,加剧氧气的不均匀分布,而位于通道下区域的阴极催化层内的反应更加剧烈,使得PEMFC升温更快,且当夹紧压力为1~2 MPa时冷启动性能最佳。 | AHMED Mohmed Dafalla 魏琳 廖梓豪 BEREKET Tsegai Habte 蒋方明 | 2022 | 工程热物理学报2022，43，4： | 1 |
| 20 | Watermelon chlorotic stunt virus from the Sudan and Iran:Sequence comparisons and identification of a whitefly-transmission determinant显示文摘 | Kheyr-Pour A Bananej K Dafalla G A Caciagli P Noris E Ahoonmanesh A Lecoq H Gronenborn B | | 0，，： | 1 |
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