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| 1 | 尿素中添加腐植酸、黄腐酸、重过磷酸钙和氯化钾能抑制氨的挥发显示文摘该试验比较了不同混合物,尿素-重过磷酸钙-氯化钾、尿素-重过磷酸钙-氯化钾-腐植酸、尿素-重过磷酸钙-氯化钾-黄腐酸、尿素-重过磷酸钙-氯化钾-酸性混合物(黄腐酸+腐植酸)在对氨损失,土壤pH值,铵态氮和可利用硝态氮积累等方面的影响,以尿素单独施用作为对照。方法:在实验室条件下,利用一个封闭式动态空气流量系统来评估是否混有重过磷酸钙、氯化钾、腐植酸、黄腐酸的情况下尿素的有效性。氨损失、土壤pH值、土壤中铵态氮以及可利用硝态氮是由标准程序测定的。结果:与对照组(单独施用尿素)相比,处理尿素-重过磷酸钙-氯化钾,尿素-重过磷酸钙-氯化钾-腐植酸,尿素-重过磷酸钙-氯化钾-黄腐酸,尿素-重过磷酸钙-氯化钾-酸性混合物(黄腐酸+腐植酸)中氨损失明显地减少,减少率由12.92%、20.12%、25.94%达到100%,土壤中的铵态氮也有类似的变化。从所有的处理来看,只有尿素-重过磷酸钙-氯化钾-黄腐酸,尿素-重过磷酸钙-氯化钾-酸性混合物(腐植酸+黄腐酸)明显地积累了土壤中可利用硝态氮,这一结果与本研究中pH值的结果一致。结论:尿素、重过磷酸钙、氯化钾中混合腐植酸或者酸性的腐植酸和黄腐酸混合物能够显著减少氨损失。这项研究结果有助于提高尿素中N,P,K使用的有效性,同时减少环境污染。 | Shamsuddin Rosliza Osumanu Haruna Ahmed Nik Muhamad Ab.Majid 张丽娜 宋丽艳 | 2010 | 腐植酸2010，，2： | 2 |
| 2 | NURBS skinning surface for ship hull design based on new parameterization method显示文摘 | SHAMSUDDIN S M AHMED M A SAMIAN Y | 2006 | Int J Adv Manuf Technol2006，28，： | 1 |
| 3 | Environmental Policy for Road Transportation: Greenhouse Gas Emissions and Carbon Lands Nexus显示文摘 | Shamsuddin Ahmed | 2015 | Journal of US-China Public Administration2015，12，5： | 1 |
| 4 | NURBS skinning surface for ship hulldesign based on new parameterzation method显示文摘 | Shamsuddin S M Ahmed M A Samian Y | 2006 | IJAMT2006，28，： | 1 |
| 5 | Seasonal models of peak electric load demand显示文摘 | Ahmed Shamsuddin | 2005 | Technological Forecasting and Social Change (S0040-1625)2005，72，5： | 1 |
| 6 | Geologic evolution of the Bengal Basin and its implications in hydrocarbon exploration in Bangladesh显示文摘 | Shamsuddin AHM Abdullah SKM | 1997 | Indian Journal of Geology1997，69，2： | 1 |
| 7 | The Relative Indicators to Agriculture Policy Development Paradigms" Local Restraints, Global Trends显示文摘 | Shamsuddin Ahmed | 2016 | Journal of US-China Public Administration2016，13，2： | 0 |
| 8 | Agro-Morphological, Physico-Chemical and Molecular Characterization of Rice Germplasm with Similar Names of Bangladesh显示文摘Thirty-one duplicate and similar named rice germplasms of Bangladesh were studied to assess the genetic variation for the agro-morphological and physico-chemical traits and simple sequence repeat banding patterns during 2009–2012 at Bangladesh Rice Research Institute. The range of variations within the cultivar groups showed higher degree. The principal component analysis showed that the first five components with vector values > 1 contributed 82.90% of the total variations. The cluster analysis grouped the genotypes into four clusters, where no duplicate germplasm was found. The highest number(11) of genotypes was constellated in cluster I and the lowest(3) in cluster II. The intra- and inter-cluster distances were the maximum in cluster I(0.93) and between clusters I and IV(24.61), respectively, and the minimum in cluster IV(0.62) and between clusters I and III(5.07), respectively. The cluster mean revealed that the crosses between the genotypes of cluster I with those of clusters II and IV would exhibit high heterosis for maximum good characters. A total of 350 alleles varied from 3(RM277) to 14(RM21) with an average of 7.8 per locus were detected at 45 microsatellite loci across the 31 rice accessions. The gene diversity ranged from 0.48 to 0.90 with an average of 0.77, and the polymorphism information content values from 0.44(RM133) to 0.89(RM206) with an average of 0.74. RM206, RM21, RM55, RM258 and RM433 were considered as the best markers on the basis of their higher polymorphism information content values. The dendrogram from unweighted pair-group method with arithmetic average clustering also classified the genotypes into four groups, where group IV comprised of 20 genotypes and group III of one genotype, but no duplicate was found. Finally, similar and duplicate named rice germplasms need to be conserved in gene bank as are distinct from each other. | Mir Sharf Uddin AHMED Mohammad KHALEQUZZAMAN Md.Khairul BASHAR Abul Kalam Mohammad SHAMSUDDIN | 2016 | Rice science2016，23，4： | 0 |
| 9 | Mathematical models for process commonality under quality and resources breakdown in multistage production显示文摘It is essential to manage customers' diverse desires and to keep manufacturing costs as low as possible for survival in competition and eventually in production.Sharing resources in manufacturing for different products is a vital method of accomplishing this goal.The advantages of using a common process in production are stated in the literature.However,the mathematical models as well as simulation or conceptual models are not sufficient.The main objective of this paper is to develop mathematical models for multiproduct and multistage production under quality and breakdown uncertainties.The idea of the process commonality is incorporated in the proposed models.The models are validated by primary data collected from a Malaysian company and comparison of the timely requirement schedules of earlier MRP II and the proposed models under stable and perfect production environments.An appreciable convergence of the outcomes is observed.However,the proposed models are carrying additional information about the available locations of the parts in a time frame.After validation,the effects of process commonality on cost,capacity and the requirement schedule under uncertainties are examined.It is observed that the use of common processes in manufacturing is always better than the non-commonality scenario in terms of production cost.However,the increase in capacity requirement for commonality designs is higher for an ideal system,while it is less when the system suffers from breakdowns and a quality problem. | Mohammed Abdul WAZED Shamsuddin AHMED Yusoff Bin NUKMAN | 2011 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2011，12，11： | 0 |
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