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Leaf Expansion and Transpiration Responses of Millet Species to Soil Water Deficit

Pedosphere 2015年第6期25卷 834-843页

作者： Mahjoubeh ESMAEILZADE-MORIDANI behnam KAMKAR Serollah GALESHI Farshid GHADERIFAR Jaime A.TEIXEIRA DA SILVA Department of Agronomy Gorgan University of Agricultural Sciences and Natural Resources (GUASNR) P.O. Box 7 Miki-cho Post Office

Plant processes, such as leaf expansion, stomatal conductance and transpiration, are affected by soil water, particularly in waterstressed environments. Quantifying the effects of soil water on plant processes, especially leaf expansion and transpiration, could be useful for crop modeling. In order to quantify the leaf expansion and transpiration in response to soil water deficit in three millet species, common(Panicum miliaceum L.), pearl(Pennisetum glaucum L.) and foxtail(Setaria italica L.) millets, a pot experiment was performed at the Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. The soil water status was characterized by the fraction of transpirable soil water(FTSW). Leaf area and transpiration were measured daily. Relative leaf area expansion(RL) and relative transpiration(RT) data were plotted against FTSW. Finally the FTSW thresholds for RL and RT were calculated using linear-plateau and logistic models. The results showed that the thresholds for RL and RT were 0.68 and 0.62,respectively, based on all measured data of the three millet species using the linear-plateau model, indicating that RL and RT were constant when FTSW decreased from 1 to the threshold point. Thereafter, until FTSW = 0, RL and RT declined linearly with a slope of 1.48 and 1.43, respectively. Although millet is cultivated as a resistant crop in arid, semiarid and marginal lands, it showed an early response to soil water deficit at high FTSW thresholds. As leaf expansion and transpiration can be considered morphological and physiological variables, respectively, the results in this study indicate that millet has strong morphological flexibility when faced with soil water deficit.

关键词：土壤水分亏缺蒸腾作用品种利用叶片谷子 Logistic模型土壤水分状况线性模型

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Hydrocarbon production rates in Fischer-Tropsch synthesis over a Fe/Cu/La/Si catalyst

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Journal of Energy Chemistry 2013年第1期22卷 119-129页

作者： Ali Nakhaei Pour Farshad Riyahi Mohammad Reza Housaindokht Mohammad Irani Seyed Mehdi Kamali Shahri behnam Hatami Department of Chemistry Ferdowsi University of Mashhad Department of Chemical Engineering Petroleum University of Technology (PUT) Research Institute of Petroleum Industry of National Iranian Oil Company Chemical Engineering Department Penn State University University Park

The detailed kinetics of Fischer-Tropsch synthesis over an industrial Fe/Cu/La/Si catalyst was studied in a continuous spinning basket re- actor under the conditions relevant to industrial operations. Reaction rate equations were derived on the basis of Langmuir-Hinshelwood- Hougen-Watson type models for Fischer-Tropsch synthesis based on possible reactions sets originated from the carbide, enolic and combined enol/carbide mechanisms. Kinetic model candidates were evaluated by the global optimization of kinetic parameters, which were realized by first minimization of multi-response objective functions with conventional Levenberg-Marquardt method. It was found that an enolic mech- anism based model could produce a good fit of the experimental data. The activation energy for paraffin formation is 95 ***1-1 which is smaller than that for olefin formation （121 ***-1）.

关键词： Fischer-Tropsch synthesis kinetics iron catalysts catalysts selectivity

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Treatment of mandibular angle fracture: Revision of the basic principles

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Chinese Journal of Traumatology 2019年第2期22卷 117-119页

作者： behnam Bohluli Ebrahim Mohammadi Iman zoljanah Oskui Nima Moaramnejad Department of Oral and Maxillofacial Surgery University of TorontoCanada Department of Oral and Maxillofacial Surgery Babol University of Medical Science Babol Iran Faculty of Biomedical Engineering Amirkabir University of Technology Tehran Iran Department of Oral and Maxillofacial Surgery Aydin University Istanbul Turkey

Biodynamics of mandibular angle fractures has been extensively discussed in the literature in search for the best way to fixate and expedite recovery of trauma patients. Pioneers like Michelet and Champy had the greatest impact on evolving of osteosynthesis in maxillofacial traumatology;they introduced their basic principles frequently used to describe the biomechanics of mandibular fixation. Their concept states when a physiologic load is applied on mandibular teeth a negative tension will be created at superior border and a positive pressure will appear at inferior border. These simple definitions are the basis for the advent of fixation modalities in mandibular angle fracture. This article sought to reassess these principals based on load location via finite elements method.

关键词： Mandibular angle Fracture Osteosynthesis

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Psychological problems as the major cause of fatigue in clients undergoing hemodialysis: A qualitative study

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International Journal of Nursing Sciences 2018年第3期5卷 262-267页

作者： Zahra Rezaei Amir Jalali Rostam Jalali behnam Khaledi-Paveh Student Research Committee School of Nursing and MidwiferyKermanshah University of medical sciencesKermanshahIran Psychiatric Nursing Department School of Nursing and MidwiferyKermanshah University of Medical SciencesKermanshahIran Nursing Department School of Nursing and MidwiferyKermanshah University of Medical SciencesKermanshahIran

Background:It is obvious that hemodialysis is a stressful process,leading to numerous social and psychological problems,and may cause fatigue and ***:This study aimed to explain the experiences of hemodialysis clients regarding the effect of psychological problems on ***:This article was extracted from a qualitative study conducted on clients undergoing hemodialysis in *** this end,a total of 15 participants were purposefully selected using the snowball sampling method and the required data was collected using individual,face to face,detailed and semi-structured *** were 12 client interviewees and one doctor,one nurse and one hemodialysis client's *** analysis was used to analyze the ***:Continuous analysis of data and documents obtained from the interviews on the hemodialysis clients'experiences and comments regarding the main causes of fatigue revealed two main categories:1)Psychological effects with subcategories of psychological stress and exhaustion;2)Needs and constraints with subcategories of individual and social needs and ***:According to the clients'speech and expression analysis,psychological impacts and disease-induced needs and constraints were the most important cause of fatigue and its continuation among these clients.

关键词： Fatigue Hemodialysis Patients Pressure Qualitative research

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Interference-Aware Multipath Routing Protocol for QoS Improvement in Event-Driven Wireless Sensor Networks

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Tsinghua Science and Technology 2011年第5期16卷 475-490页

作者： Marjan Radi behnam Dezfouli Kamalrulnizam Abu Bakar Shukor Abd Razak Mohammad Ali Nematbakhsh Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia Faculty of Computer Engineering University of Isfahan

The existing multipath routing protocols for wireless sensor networks demonstrate the efficacy of traffic distribution over multiple paths to fulfill the Quality of Service （QoS） requirements of different applications. However, the performance of these protocols is highly affected by the characteristics of the wireless channel and may be even inferior to the performance of single-path approaches. Specifically, when multiple adjacent paths are being used concurrently, the broadcast nature of wireless channels results in inter-path interference which significantly degrades end-to-end throughput. In this paper, we propose a Low- Interference Energy-efficient Multipath Routing protocol （LIEMRO） to improve the QoS requirements of event-driven applications. In addition, in order to optimize resource utilization over the established paths, LIEMRO employs a quality-based load balancing algorithm to regulate the amount of traffic injected into the paths. The performance gain of LIEMRO compared to the ETX-based single-path routing protocol is 85%, 80%, and 25% in terms of data delivery ratio, end-to-end throughput, and network lifetime, respectively. Furthermore, the end-to-end latency is improved more than 60%.

关键词： LIEMRO QoS load balancing interference multipath routing event-driven

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RSM方法对不同冷润滑条件下的AA2024合金车削加工进行参数优化及表面粗糙度评价

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Journal of Central South University 2020年第6期27卷 1714-1728页

作者： Seyed Hasan MUSAVI behnam DAVOODI Behzad ESKANDARI Department of Mechanical Engineering Amirkabir University of TechnologyTehran 15875-4413Iran School of Mechanical Engineering Iran University of Science and TechnologyTehran 16846-13114Iran Department of Mechanical Automotiveand Materials EngineeringUniversity of WindsorWindsorCanada

本文研究了减少切削液消耗对刀具表面质量和刀具磨损的影响。利用响应面方法(RSM)建立了预测表面粗糙度的数学模型,使用方差分析(ANOVA)来研究所建立回归模型的有效性。结果表明,拟合模型的R^2分别为dry型的97.46%、FM型的89.32%、MQL型... 详细信息

本文研究了减少切削液消耗对刀具表面质量和刀具磨损的影响。利用响应面方法(RSM)建立了预测表面粗糙度的数学模型,使用方差分析(ANOVA)来研究所建立回归模型的有效性。结果表明,拟合模型的R^2分别为dry型的97.46%、FM型的89.32%、MQL型的99.44%,具有较高的拟合精度。在MQL型条件下,表面粗糙度较dry型和FM型分别提高了23%~44%和19%~41%,加工表面的SEM图像证明了这一说法。刀具前端面扫描电镜图像表明粘着磨损明显减少。粘着磨损的主要产物是粘着边和粘着层,利用X射线能谱分析刀具表面特定点,确定粘着材料的化学成分。将dry工艺和FM工艺改为MQL工艺,显著降低了铝合金加工过程中刀具磨损的程度。导致切削刀具早期失效的断裂磨损通过MQL技术得到了控制。

关键词：冷却润滑法表面粗糙度最小润滑量响应面法 AA2024

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硅含量对TIG焊Al-Si/SiC_p复合层包覆A380铝合金显微组织的影响(英文)

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Transactions of Nonferrous Metals Society of China 2014年第9期24卷 2824-2830页

作者： behnam LOTFI Mehdi ROSTAMI Zohreh SADEGHIAN Department of Materials Science and Engineering Faculty of Engineering Shahid Chamran UniversityAhvaz Iran

采用钨极惰性气体(TIG)在铸态A380铝合金表面制备复合涂层。将Al,Si和SiC粉末混合物与硅酸钠溶液混合后涂覆在基材上,采用TIG焊进行表面熔化,在基体表面制备Al-SiC涂层。采用XRD、SEM和EDS研究显微组织的变化,采用显微硬度和滑动磨损试... 详细信息

采用钨极惰性气体(TIG)在铸态A380铝合金表面制备复合涂层。将Al,Si和SiC粉末混合物与硅酸钠溶液混合后涂覆在基材上,采用TIG焊进行表面熔化,在基体表面制备Al-SiC涂层。采用XRD、SEM和EDS研究显微组织的变化,采用显微硬度和滑动磨损试验研究包覆层的性能。结果表明,SiC粒子均匀分布在树枝状的铝基体中。加入过量的硅造成包覆层共晶和粗大硅粒子的形成,从而导致包覆层具有较高的硬度和耐磨性。

关键词： Al-SiC:TIG焊复合包覆层耐磨性

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In-vitro bioactivity evaluation and physical properties of an epoxy-based dental sealer reinforced with synthesized fluorine-substituted hydroxyapatite, hydroxyapatite and bioactive glass nanofillers

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Bioactive Materials 2019年第1期4卷 322-333页

作者： Bahaa Abdulrazzaq Jerri Al-Bakhsh Farhad Shafiei Atieh Hashemian Kiana Shekofteh behnam Bolhari Marjan Behroozibakhsh Department of Dental Biomaterials School of DentistryTehran University of Medical SciencesTehranIran Department of Conservative Dentistry Dental School of University of BasraBasraIraq Department of Dental Biomaterials School of Dentistry/Research Center for Science and Technology in MedicineTehran University of Medical SciencesTehranIran Department of Endodontic School of DentistryTehran University of Medical SciencesTehranIran

The purpose of this study was to evaluate the physical properties and bioactivity potential of epoxy-based dental sealers modified with synthesized bioactive glass(BAG),hydroxyapatite(HA)and fluorine substituted hydroxyapatite(FHA)*** synthesized powders were incorporated at 10%and 20%into the epoxy-based dental *** setting time,flow and solubility and microhardness of the modified and unmodified samples were *** bioactivity was evaluated using FESEM-EDX and elemental mapping,ATR-FTIR and *** flow value of all of the experimental groups except the FHA modified samples,was greater than 20 *** solubility,no specimens exhibited more than 1%weight *** solubility value of the FHA groups was statistically significant lower than other groups(p≤0.001).The mean hardness values of all of the modified samples were significantly higher than the unmodified group(p≤0.001).Regarding bioactivity,in vitro study revealed that after 3 days immersion in SBF a compact and continuous calcium phosphate layer formed on the surface of epoxy sealers containing BAG and HA *** on these results,the addition of BAG and HA nanoparticles did not adversely alter the physical properties of epoxy ***,they improved the in vitro bioactivity of the epoxy sealer.

关键词： Bioactivity Bioactive glass Epoxy-based dental sealer Hydroxyapatite Fluorine-substituted hydroxyapatite

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Seepage analysis of Upper Gotvand Dam concerning gypsum karstification(2D and 3D approaches)

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Frontiers of Structural and Civil Engineering 2011年第1期5卷 71-78页

作者： Jamshid SADREKARIMI Majid KIYANI behnam FAKHRI Mohammad Javad VAHDATIRAD Amin BARARI Faculty of Civil Engineering University of TabrizTabrizIran Faculty of Civil Engineering University of MazandaranBabolIran Department of Cicil Engineering Aalborg UniversitySohngårdsholmsvej 57Aalborg 9000Denmark

Upper Gotvand Dam is constructed on the Karun River at the south west of *** this paper,2D and 3D models of the dam together with the foundation and abutments were established,and several seepage analyses were carried ***,the gypsum veins that are scattered throughout the foundation ground were included in the models,and the seepage pattern,considering the dissolution law of gypsum,was *** was disclosed that the discharge fluxes obtained from 2D and 3D analyses are not similar,and the discharge flux in 3D model is about four times that of the 2D ***,the 3D model locates the phreatic surface somewhat higher than the 2D *** means that the 2D model estimates lower pore water pressure pattern in comparison with the 3D *** may be attributed to the fact that with 2D model the lateral components of vectors of seepage velocity are *** the current case,the rate of increase of discharge flux due to dissolution of gypsum veins was obtained to be a thirdorder function of the aperture *** spite of the fact that the grout curtain is designed to be about 170 m deep,however,complete dissolve of gypsum will severely increase the discharge flux through the foundation ground.

关键词： Upper Gotvand Dam seepage analysis gypsum veins 3D model discharge flux

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纳米颗粒增强纳米流体对刀具磨损形貌的影响（英文）

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Journal of Central South University 2019年第5期26卷 1050-1064页

作者： Seyed Hasan MUSAVI behnam DAVOODI Seyed Ali NIKNAM School of Mechanical Engineering Iran University of Science and Technology

高温合金属于硬切削材料,加工性较差。在高温合金加工,刀具磨损被认为是切削性能的主要特征之一。虽然关于高温合金加工过程中影响刀具寿命的因素已有大量报道,但关于纳米粒子稳定性对纳米流体性能的影响以及由此导致的刀具磨损形貌的... 详细信息

高温合金属于硬切削材料,加工性较差。在高温合金加工,刀具磨损被认为是切削性能的主要特征之一。虽然关于高温合金加工过程中影响刀具寿命的因素已有大量报道,但关于纳米粒子稳定性对纳米流体性能的影响以及由此导致的刀具磨损形貌的研究尚未见报道。在本工作中,通过提高基液的稳定性来增强纳米粒子。在此基础上,将切削液中加入表面活性剂作为增强剂,研究新型润滑剂对A286工件刀具磨损形貌的影响。

关键词：纳米流体表面活性剂纳米粒子分散堆积边缘

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