نتایج جستجو برای: geometric tolerance
تعداد نتایج: 215615 فیلتر نتایج به سال:
in order to evaluate the best drought resistance indices in sugar beetgenotypes, an experiment was conducted in 2002 using a split- plot design within randomized complete block design with three replications at the research farm, shiraz-zarghan. the main plots consisted of three irrigated regimes: non stress, 75% (mid stress) and 50% (intense stress) non stress and the ten genotypes as the sub ...
A significant amount of research has been performed to explore the mathematical basis for dimensional and geometric tolerance representation, analysis, and synthesis. However, tolerancing semantics such as logical dependency among variations and sequence of specifications is not maintained in these models. Consequently, their numerical results are not interpretable. In this paper, a semantic to...
Objective: In order to study genetic variation and effect of drought stress on grain yield and some morphological traits in chickpea, an experiment was conducted on 64 genotypes during 2013-2014 cropping season at deputy of Kermanshah Sararood Dry Land Agricultural Research Institute, located on the western part of Iran. Methods: The experimental design was a randomized lattice design with tow ...
Objective: In order to study genetic variation and effect of drought stress on grain yield and some morphological traits in chickpea, an experiment was conducted on 64 genotypes during 2013-2014 cropping season at deputy of Kermanshah Sararood Dry Land Agricultural Research Institute, located on the western part of Iran. Methods: The experimental design was a randomized lattice design with tow ...
One of the possible ways to ensure future food needs of an increasing world population involves the better water use through the development of crop varieties which need less water and are more tolerant to drought. In order to study the response of twenty landraces of bread wheat to drought stress, an experiment was conducted in a randomized complete block design with three replications under t...
Sesame is one of the plants that due to the high content (47-52%) and high quality (low cholesterol and some antioxidants) its seed oil, important role has in human health. An experimental with objective to evaluate eight local landraces of sesame to drought stress based on grain yield and drought tolerance indices using factorial split plot design was conducted with three replications in resea...
Traditional methods of assessing the geometric integrity of any nely engineered product requires the use of xtures. The t is then tested with a feeler gauge. Fixtures are expensive to construct and transport and the degree of accuracy obtained may be insu cient, depending on the tolerance speci ed by the procurer of the part. In this paper, we discuss an alternative scienti c approach to assess...
The focus of this publication is a review of the state of the art in tolerance analysis, synthesis and transfer for geometric and dimensional tolerances (GDT) in sheet metal forming and the integration solutions with computer-aided process planning systems. In this context, the general tolerance methods are first described. Then the mathematical models for sheet metal tolerance analysis and syn...
We present a general method for worst-case limlt kinematic tolerance analysis: computing the range of variation in the kinematic function of a mecnanism [rom its part tolerance specifications. The method covers fixed and changing contact mechanisms with parametric or geometric part tolerances. We develop a new model of kincmaLic variation, called kinematic tolerance space, that generalizes the ...
Breeding for environmental stress is one of the most important goals in plant breeding. Among stresses, drought stress has high influencing on limitation of maize production. Therefore, in order to find the best drought tolerant hybrids, 38 maize hybrids were planted in two separate experiments: one with optimum irrigation (control) and another with water stress at grain-filling stage in Moghan...
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