نتایج جستجو برای: by comparing laboratory and growth chamber experiments
تعداد نتایج: 17916533 فیلتر نتایج به سال:
The number of calendar days since sowing is a commonly used means of expressing time. Using calendar days can be relevant for comparing genotypes in a given experiment, if environmental conditions remain constant throughout the plant culture. However plant development is highly dependent upon environmental conditions. As a consequence, using calendar days does not allow comparing genotypes that...
Comparing focal plane wavefront control techniques: Numerical simulations and laboratory experiments
in this work, the feasibility study for design of a laboratory sample rde which has an annular geometry with diameter of 76 mm and length of 101 mm has been performed. detonation engines are expected to be used as propulsion system in aerospace applications in the future. several types of detonation engines are currently under examination, including the rotating detonation engine (rde). first, ...
in this research,the authors conducted a study comparing two groups of male and female english language learners studying in a elt institute,in terms of their performance on their achievement test including listening comprehension,vocabulary,grammar,and reading comprehension and found no significant difference between the group except in listening comprehension part of the test in which the f...
Background: The need for high-quality education and setting principles and practices for enhancing educational policy and practice using modern techniques is self-evident. The entrance of students into the factories is sometimes limited, and of particular concern is that students likely face danger by their presence at the workplace. A review of the related literature revealed no research inv...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
Abstract. Bayesian state estimation in the form of Kalman smoothing was applied to differential mobility analyser train (DMA-train) measurements aerosol size distribution dynamics. Four experiments were analysed order estimate distribution, formation rate, and size-dependent growth as functions time. The first case a synthetic one, generated by detailed dynamics model other three chamber perfor...
the present study attempts to discover ideological differences between alcott’s novel (1868) named “little women” and its two persian translations. the first has been translated by morvarid and the second has been translated by obeidi. to this end, farahzad’s cda approach (2012) was used to analyze the ideology reflected in both translations by the two different translators. according to farahz...
one of the basic principles of an experiment is the repetition of its treatments so that treatments cannot be statistically compared without repetition. using enough replications has a great impact on scientific validity, but in most cases, not enough attention is paid. generally, selecting the number of replications is done according to previous experiments at similar conditions, regarding the...
according to webster and wind (1972) and anderson et al (1987), “organizational buying is a complex process and involves many people from different functional areas, multiple goals and potentially conflicting decision criteria. moreover, the customers of today are also more knowledgeable and selective when making their purchasing decisions. since a key to organizational survival is the retentio...
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