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International Journal of Agricultural and Biological Engineering 2011年第2期4卷 29-35页

作者： abdalla N Osman Li Xia Zhang Dongxing College of Engineering China Agricultural UniversityBeijing 100083China Department of Agricultural Machinery College of Agricultural Studies-Sudan University of Science and Technology-Khartoum-Sudan

Standard Disk Plough(SDP)is the integral element of traditional farming system in Middle and Northern *** SDP,the tilt angle between the planes of the cutting edge of the disk which is inclined to a vertical line may be altered according to the field *** drivers usually use an angle close to maximum in order to decrease the tillage depth,consequently decreasing power requirements,without considering the tillage quality and the impact on the soil *** experiment was conducted at the College of Agricultural Studies farm of Sudan University of Science and Technology to study the effects of three tilt angles(15°,20°and 25°)on soil bulk density,mean weight diameter,wheel slippage,work rate(or effective field capacity)and soil volume disturbed using mounted disk *** nature of soil on the farm found to be light *** theoretical forward speed was maintained at 6 km/*** results showed that increasing tilt angle of the plough significantly(p<0.05)increased the bulk density,mean weight diameter and field capacity while significantly decreasing the tractor wheel slippage and soil volume disturbance.

关键词： disk plough tilt angle wheel slippage effective field capacity soil volume disturbance mean weight diameter

柴油机颗粒过滤器再生过程的碳氢喷射模拟( 英文)

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汽车安全与节能学报 2017年第3期8卷 268-278页

作者：艾尼塞王国仰张俊帅石金清华大学汽车安全与节能国家重点实验室中国北京100084

为满足严格的重型柴油机排放法规,柴油催化氧化器(DOC)和催化型柴油颗粒捕集器(CDPF)得到了广泛的应用。碳氢喷射(HCI)是一种实现DPF主动再生的有效方法。该文通过改变柴油喷嘴位置来优化DOC入口的碳氢化合物(HC)分布。使用计算流体力... 详细信息

为满足严格的重型柴油机排放法规,柴油催化氧化器(DOC)和催化型柴油颗粒捕集器(CDPF)得到了广泛的应用。碳氢喷射(HCI)是一种实现DPF主动再生的有效方法。该文通过改变柴油喷嘴位置来优化DOC入口的碳氢化合物(HC)分布。使用计算流体力学软件AVL-FIRE,建立了DOC-CDPF模型,用软件内置HCI喷雾模型,对喷射器的安装位置和喷射方向进行了数值模拟。模拟结果显示:喷射器的位置对HC分布有很大的影响,喷射器位置距离DOC越远,DOC入口处的HC混合均匀性越高,这是因为喷雾在DOC前有更长的距离和时间形成均匀混合气;排气管喷射柴油可以使DPF入口温度达到550℃,满足了CDPF主动再生的需求。

关键词：汽车废气排放颗粒物 (PM) 碳氢喷射 (HCI) 催化型柴油颗粒捕集器 (CDPF) 柴油催化氧化器 (DOC) 主动再生

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分子标记在品质和抗病性育种中的应用

分子标记在品质和抗病性育种中的应用

Effects of Zero Tillage and Residue Retention on Soil Quality in the Mediterranean Region of Northern Syria

2018全国植物生物学大会

作者：何中虎夏先春陈新民张勇闫俊 Awais rasheed 杨恩年中国农业科学院作物科学研究所 CIMMYT中国办事处四川省农业科学院作物研究所中国农业科学院棉花研究所

针对白粉病、条锈病和叶锈病三大病害,对兼抗型成株抗性的鉴定方法、QTL定位、育种方法建立与材料创制进行了系统研究,建了立兼抗三种病害的成株抗性育种新方法。揭示了平原50等持久抗性品种的遗传机制,聚合3-5个效应较大的QTL即可在甘... 详细信息

针对白粉病、条锈病和叶锈病三大病害,对兼抗型成株抗性的鉴定方法、QTL定位、育种方法建立与材料创制进行了系统研究,建了立兼抗三种病害的成株抗性育种新方法。揭示了平原50等持久抗性品种的遗传机制,聚合3-5个效应较大的QTL即可在甘肃和四川等锈病重发区实现持久抗性。在QTL定位的基础上,在北京用鲁麦21和百农64杂交,在四川用引进的含成株抗性基因的CIMMYT种质与四川品种进行杂交并回交,结合分子标记检测,育成农艺性状优良的兼抗型成株抗性育种新材料100多份。四川农科院育成的兼抗型品种川麦82于2017年通过四川省品种审定,我们育成的兼抗型品种中麦255和中麦578,表现高产优质兼抗,将于2018年底通过河南省品种审定。

关键词：普通小麦成株抗性基因定位育种

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Open Journal of Soil Science 2014年第3期4卷 109-125页

作者： Rolf Sommer Colin Piggin David Feindel Muhammad Ansar Lona van Delden Kayoko Shimonaka Jihad abdalla Osama Douba George Estefan Atef Haddad Rousheen Haj-Abdo Ali Hajdibo Pierre Hayek Yaseen Khalil Ahmed Khoder John Ryan International Center for Agricultural Research in the Dry Areas (ICARDA) Aleppo Syria nternational Center for Agricultural Research in the Dry Areas (ICARDA) Aleppo Syria nternational Center for Tropical Agriculture CIAT Nairobi Kenya

Zero-tillage (ZT) and crop residue retention on the soil surface—two components of Conservation Agriculture (CA)—have been identified as promising management practices for sustainable agri- cultural intensification for some time. However, CA technology uptake by farmers in the dry areas of West Asia and North Africa (WANA) has yet to happen large-scale, even though the positive im- pact on yield has been demonstrated repeatedly. To explain the observed consistent increases in crop yield under ZT, a range of soil quality indicators were regularly monitored during 2008 to 2012 in the long-term ZT/CA trials at the headquarters of the International Center for Agricultural Research in the Dry Areas (ICARDA) in northern Syria. Results showed that CA had a positive im- pact on soil fertility. This was measurable by higher soil organic matter (SOM) and microbial bio- mass contents, increased levels of extractable phosphate, sometimes (but not always) higher amounts of larger water-stable soil aggregates, increased soil infiltration capacity and soil water retention. The buildup of SOM and associated carbon (C) sequestration was in the range of 0.29 Mg C/ha/yr, i.e. rather modest. High amounts of surface residues delayed the desiccation of the topsoil during the fallow period, but could not diminish the overall longer-term drying of the topsoil. The observed positive changes in soil quality were little, but nevertheless, in combination with the economic savings that ZT offers, this type of agricultural intensification provides an attractive op- tion for farmers in WANA, from the standpoints of economy and ecological efficiency.

关键词： Conservation Agriculture Soil Fertility Indicators Soil Water Evaporation Water Infiltration Water Stable Aggregates Soil Carbon Sequestration

Screening for Sodium-Salt Tolerance at the Seedling Stage of Rice(Oryza sativa L.)Genotypes from Sudan and South Sudan

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Journal of Agricultural Science and Technology(B) 2018年第6期8卷 341-351页

作者： Seif Gasim Ishraka Abuanja Mohamedsalih Dafalla Abdelwahab abdalla Department of Agronomy Faculty of AgricultureUniversity of KhartoumShambat 13314Sudan Department of Soil Science Faculty of AgricultureUniversity of KhartoumShambat 13314Sudan

Morpho-physiological and genetic studies of salinity are important in understanding the mechanism of plant adaptation to stressful *** rice genotypes collected from Sudan and South Sudan,which were never tested for salt tolerance,as well as two genotypes(FL478 as tolerant check and IR29 as sensitive check)from the International Rice Research Institute(IRRI),were subjected to salinity stress at seedling *** was carried out in hydroponic system applying electrical conductivity(EC)12 dS/m NaCl using randomized complete block design with three *** of the genotypes showed sensitivity to salt stress;one genotype PIPANFARY RED2 was moderately sensitive and three genotypes MASURY1,MASURY2 and FL478 were *** significantly reduced leaf dry weight,shoot dry weight,root dry weigh and biomass production(biomass/plant)by 31%,42%,60%and 47%,*** genotypes accumulated low amount(2.52 g/100 g dry weight(dwt))of Na^+in the root,whereas highly sensitive genotypes accumulated high amount(3.87 g/100 g dwt)of Na^+.Tolerant genotypes showed less reduction in K^+concentration than the sensitive ***,they maintained lowest Na^+/K^+ratio in the shoot(1.47%)than in the root(3.69%)compared to the intolerant genotypes(7.49%and 8.49%).The genotypes that showed tolerance to salinity stress can be used as a source of resistance/tolerance in a breeding program for rice improvement in uplands areas in semi-arid condition.

关键词： Rice salt tolerance seedling stage plant tissue

Hypoalbuminemia in colorectal cancer prognosis:Nutritional marker or inflammatory surrogate?

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World Journal of Gastrointestinal Surgery 2015年第12期7卷 370-377页

作者： Bassel Nazha Elias Moussaly mazen Zaarour Chanudi Weerasinghe Basem Azab Department of Medicine North Shore-LIJ Staten Island University Hospital Department of General Surgery Arnot Medical Center

Albumin is the single most abundant protein in the human serum. Its roles in physiology and pathology are diverse. Serum albumin levels have been classically thought to reflect the nutritional status of patients. This concept has been challenged in the last two decades as multiple factors, such as inflammation, appeared to affect albumin levels independent of nutrition. In general, cancer patients have a high prevalence of hypoalbuminemia. As such, the role of hypoalbuminemia in patients with colorectal cancer has received significant interest. We reviewed the English literature on the prognostic value of pretreatment albumin levels in colorectal cancer. We also consolidated the evidence that led to the current understanding of hypoalbuminemia as an inflammatory marker rather than as a nutritional one among patients with colorectal cancer.

关键词： Hypoalbuminemia Albumin Colorectalcancer Albumin-to-globulin ratio Cancer survival Systemic inflammatory response Glasgow prognosticscore

老年糖尿病病人应激性高血糖与胸腔镜下肺切除术后肺部并发症的关系

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实用老年医学 2022年第5期36卷 433-436页

作者：陈紫璇 Sara Musa abdalla Elamin 朱琳佳查天明许斯洋桂波张扬南京医科大学第一附属医院麻醉与围术期医学科江苏省南京市210029 江苏省省级机关医院麻醉科江苏省南京市210024

目的探讨老年糖尿病病人应激性高血糖(stress hyperglycemia,SH)与胸腔镜下肺切除术后肺部并发症(postoperative pulmonary complications,PPCs)的关系。方法回顾性选择2017年1月至2020年7月在我院行择期胸腔镜下肺切除术的老年糖尿病病... 详细信息

目的探讨老年糖尿病病人应激性高血糖(stress hyperglycemia,SH)与胸腔镜下肺切除术后肺部并发症(postoperative pulmonary complications,PPCs)的关系。方法回顾性选择2017年1月至2020年7月在我院行择期胸腔镜下肺切除术的老年糖尿病病人367例,收集病人一般资料、合并症、医师组别、术中液体出入量、手术时长及肌酐、Hb、白细胞、HbA1c、血糖水平等。采用应激性高血糖比率(stress hyperglycemia ratio,SHR)评估SH强度。采用多因素Logistic回归分析病人发生PPCs的危险因素。结果162例(44.1%)老年糖尿病病人发生PPCs(并发症组)。与无并发症组相比,并发症组病人入院时FPG、术日动脉FPG水平以及入院时SHR显著升高(P<0.05)。多因素Logistic回归分析显示,术日动脉FPG水平与入院时SHR是老年糖尿病病人胸腔镜下肺切除术后发生PPCs的独立危险因素。结论术日动脉FPG水平以及入院时SHR是老年糖尿病病人胸腔镜下肺切除术后发生PPCs的独立危险因素。

关键词：老年人糖尿病应激性高血糖胸腔镜下肺切除术肺部并发症

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幼儿教师数学核心经验理解发展特征研究

科教导刊 2021年第12期 52-54页

作者：夏依达·阿布都拉吐鲁番职业技术学院新疆吐鲁番838099

领域教学知识(PCK)是反映教师专业性的关键。在领域教学知识的三部分中起决定作用的是教育内容的知识,即核心经验。本研究以幼儿教师开展的数学教育活动为线索,以数学理解理论为理论支撑,探究了幼儿教师数学核心经验理解发展历程所表现... 详细信息

领域教学知识(PCK)是反映教师专业性的关键。在领域教学知识的三部分中起决定作用的是教育内容的知识,即核心经验。本研究以幼儿教师开展的数学教育活动为线索,以数学理解理论为理论支撑,探究了幼儿教师数学核心经验理解发展历程所表现出的的横向特征。可以概括为同质性和差异性并存、系统性和零散性并存、动态性和滞缓性并存。专业阅读、教育实践、园本教研、教育反思等因素影响了幼儿教师数学核心经验理解水平的深化和发展。这为探讨幼儿教师数学核心经验理解发展的有效途径奠定了基础。

关键词：幼儿教师数学核心经验理解

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基于Sentinel-1和Landsat 8数据的植被覆盖地表土壤湿度反演

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基于Sentinel-1和Landsat 8数据的植被覆盖地表土壤湿度反演

儿童Gaucher病神经元病变1H-MRS

第35届中国气象学会年会

作者：鲍艳松林利斌吴善玉 Khidir abdalla Kwal Deng George P.Petropoulos 南京信息工程大学中国气象局气溶胶与云降水重点开放实验室气象灾害预报预警与评估协同创新中心南京信息工程大学大气物理学院 Department of Geography and Earth Sciences University of Aberystwyth Department of Mineral Resources Engineering Technical University of Crete

基于Sentinel-1合成孔径雷达（SAR）和LandsatOLI数据,结合水‐云模型和地表散射模型,提出了一种植被覆盖条件表层土壤水分（surface soil moisture,SSM）反演模型。为了消除植被对SSM反演的影响,应用Landsat OLI光谱指数建立植被含水... 详细信息

基于Sentinel-1合成孔径雷达（SAR）和LandsatOLI数据,结合水‐云模型和地表散射模型,提出了一种植被覆盖条件表层土壤水分（surface soil moisture,SSM）反演模型。为了消除植被对SSM反演的影响,应用Landsat OLI光谱指数建立植被含水量估计模型。将该模型代入原始水‐云模型,建立一套改进的带有光谱指数的水‐云模型。最后,基于改进的水云模型开发了SSM估计模型。为检验模型精度,在英国和西班牙两个实验区进行了试验研究,试验中使用International Soil Moisture Network （ISMN）观测网络。研究结果表明:（1）对于植被覆盖地表的土壤水分估计,从1.57-1.65μm波段反射率数据得到的归一化水分指数（normalized difference water index,NDWI）更适合去除植被覆盖的影响;（2）与Sentinel-1VH极化相比,VV极化的后向散射系数更适用于土壤水分反演,并且精度较高;（3）所建模型具有较高的土壤湿度反演精度,与实测土壤湿度的相关系数R为0.911,均方根误差RMSE为0.053 cm3/cm3。本文提出的模型可用于区域土壤湿度监测,为农业生产提供高时空分辨率土壤湿度信息,具有较高的应用价值。

关键词：地表土壤湿度植被含水量水-云模型 Sentinel-1 SAR Landsat 8 OLI

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国际医学放射学杂志 2014年第1期 85-86页

作者： A.A.K.A.Razek A.abdalla N.A.Gaber A.Fathy A.Megahed T.Barakat 高丽娟 Department of Diagnostic Radiology Mansoura Faculty of Medicine Mansoura University

目的评价儿童Gaucher病(NGD)1H-MRS的临床价值。方法本项前瞻性研究对21例连续的儿童NGD病例进行研究,其中急性期7例、慢性期14例,包括男13例、女

关键词：神经元病变 Gaucher病儿童中枢神经系统