نتایج جستجو برای: medium and large diameters

تعداد نتایج: 16938914  

2010
Gary Koop

This paper is motivated by the recent interest in the use of Bayesian VARs for forecasting, even in cases where the number of dependent variables is large. In such cases, factor methods have been traditionally used but recent work using a particular prior suggests that Bayesian VAR methods can forecast better. In this paper, we consider a range of alternative priors which have been used with sm...

Journal: :پژوهش های تولید گیاهی 0
مریم توکلی دانشجوی دانشگاه علوم کشاورزی و منابع طبیعی گرگان کامبیز مشایخی دانشیار گروه باغبانی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان فرشید قادری فر استادیار گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

one of the important methods of plant propagation in large scale so as genetic manipulation and artificial seed production is somatic embryogenesis technique. the obtained results from this methods related to different factors including condition of culture medium. therefore, the aim of this study conduction were determining the role of molybdenum during carrot petiole somatic embryogenesis. at...

M Khaksar M Khatib M Nazari, M.M Shahmardan S Mosayebi

The permeability of the preform composite materials used in liquid molding processes such as resin transfer molding and structural reaction injection molding is a complex function of weave pattern and packing characteristics. The development of tools for predicting permeability as a function of these parameters is of great industrial importance. Such capability would speed process design and op...

Journal: :journal of modern processes in manufacturing and production 2015
hamid moradlou mehrdad asadi

modern manufacturing is under ever increasing pressure to develop solutions for highly complextasks. in order to maintain the business survival in a highly competitive environment, it is vital toobtain customer satisfaction, which requires developing products with shorter lifecycles and higherquality meanwhile to reduce the production costs. in order to achieve such objectives a paradigmhas bee...

Journal: :journal of industrial strategic management 0
a riahi

for the past 3 decades, creating industrial clusters have been considered as an approach for the development of most small and medium enterprises. the goal of this programme is that all small and medium enterprises locating in a certain geoghraphic area can concentrate on cluster approach to collaborate in market research, production design, training and other activities that are not economical...

Journal: :Journal of Physics: Conference Series 2006

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :iranian journal of biotechnology 2007
payam pour mohammadi ahmad moieni mokhtar jalali-javaran

this study involves in vitro androgenesis of zea maysl. via anther culture. combination of two embryoinduction media (imss & ypm) in presence of different colchicine concentrations (0, 100, 200, 250, 300and 400 mg/l ) in the pretreatment medium (iml) andpretreatment duration (0, 3, 6 and 9 days) in twogenotypes (dh5×dh7 and eth-m82) were tested.after colchicine pretreatment, anthers were tr...

Journal: :Optics letters 2002
Liu Quan Nirmala Ramanujam

The relationship between the depth of a target in a turbid medium and the fluorescence ratio profile measured by use of illumination and collection apertures with variable diameters and the same optical path is shown. The forward problem was studied by Monte Carlo simulations of the propagation of fluorescent light through a theoretical model of a biologically relevant system for a range of ape...

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