نتایج جستجو برای: ecological systems indefinite weight grazing and constant yield harvesting sub supersolution method
تعداد نتایج: 17299149 فیلتر نتایج به سال:
in this study, the effect of foliar spray with calcium chloride (0, 0.75, 1.5 and 3 g l-1) during 2, 4 and 6 weeks before commercial harvesting time of apple fruit cv. ‘gala’ and ‘delbarestival’ which trained in three different systems (v shape, hightech and cordon) was investigated. the results showed that types of training systems and foliar application of calcium can affect on fruits quality...
now-a-days graphic design plays a major role in influencing culture, society, business, and customers, in such a way that one could look upon every individual as a potential customer. graphic designers seek to identify customers needs and find an intelligent solution for them. correct identification and understanding of those needs is the first step towards achieving ones goals. marketing knowh...
one of the most important number sequences in mathematics is fibonacci sequence. fibonacci sequence except for mathematics is applied to other branches of science such as physics and arts. in fact, between anesthetics and this sequence there exists a wonderful relation. fibonacci sequence has an importance characteristic which is the golden number. in this thesis, the golden number is observed ...
In this paper we show the existence and multiplicity of positive solutions using sub-supersolution method Mountain Pass Theorem in a general singular system which operator is not homogeneous neither linear.
This research was designed to evaluate and compare the applicability of two different types of irrigation including traditionally (surface irrigation) and simple sub-surface drip irrigation (using pricked-pipe covered with plastic cloth). Two plots containing 39 pistachio trees with 720 m2 area were selected in Rafsanjan, Iran. Both plots were irrigated using exactly the same quantity and quali...
Introduction: Rangelands constitute almost 52 percent of the country area computed as 164 million ha. The extent of rangelands has been estimated 84 million ha in Iran and they have been classified as good, moderate to poor and poor to very poor ones ranged as almost 10, 42 and 48 percent, respectively. One of the fundamental problems concerning land uses of rangelands is that Rangeland are not...
We consider a prototype of quasilinear elliptic variational-hemivariational inequalities involving the indicator function of some closed convex set and a locally Lipschitz functional. We provide a generalization of the fundamental notion of suband supersolutions on the basis of which we then develop the sub-supersolution method for variationalhemivariational inequalities. Furthermore, we give a...
abstract soil compaction is a main factor that reduces the cane yield in sugarcane fields, in southwest of iran, especially in ratoon cropping system. therefore, sub-soiling practices could alleviate adverse effects of compaction and increased yield. in according to this aim, a study was to evaluate the effect of ratooning practice systems consisting of control (no subsoiler), two and four sha...
Planting project is one of the methods for improvement of rangeland degradation that exact implementation depends on many factors. Therefore, there is a need for a fundamental method. In the present study for locating planting project, in Maravehtappe watershed, analytic hierarchical process and fuzzy logic are applied. In this study, four ecological criteria of vegetation, soil, physiography a...
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