نتایج جستجو برای: chemical and ecological control
تعداد نتایج: 17057580 فیلتر نتایج به سال:
1.0 overview it seems that grammar plays a crucial role in the area of second and foreign language learning and widely has been acknowledged in grammar research. in other words, teaching grammar is an issue which has attracted much attention to itself, and a lot of teachers argue about the existence of grammar in language teaching and learning. this issue will remind us a famous sentence f...
Due to the side effects of chemical drugs, special attention is given recently to pharmaceutical plants. Myrtle (Myrtus communis L.) is one of the valuable pharmaceutical plants, which is distributed over the vast areas of Iran. Yield and components of essential oil of this plant is dependent on ecological and genetic factors. In order to describe some ecological factors that affect myrtle in L...
Introduction Advanced biological brains are by nature open-ended opportunistic controllers. Such controllers compute, pretty much on a moment-tomoment basis, what problem-solving resources are readily available and recruit them into temporary problem-solving wholes. Neural
Large variations exist in the size, abundance and biota of the two principal categories of freshwater ecosystems, lotic (flowing water; e.g., rivers, streams, deltas and estuaries) and lentic (standing water; lakes, ponds and wetlands) found across the circumpolar Arctic. Arctic climate, many components of which exhibit strong variations along latitudinal gradients, directly affects a range of ...
Purpose: The aim of this study was to evaluate the effectiveness of couples therapy based on the ecological model in reducing marital conflicts and desire to divorce in couples. Methods: This study was a quasi-experimental study with control and treatment groups. The statistical population of this study consisted of all of the couples referred to State Welfare Organization in city of Markazi (I...
background & aim: nowadays, tendency to agricultural biotic product sustainable agriculture instead of chemical fertilizers has been going up in all over the world. so, most pharmaceutical industries prefer to use raw material which is produced from organic and stable system. producing organic medicinal plants, such as peppermint, seems important in economical, ecological and bio enviro...
building on previous studies on intellectual features and learners’ grammar learning, the present study aimed at investigating whether intelligence criterion had any impact on efl learners’ english grammar learning across two intelligence levels. in the current study, the participants were divided into two experimental and control groups by administration of raven i.q. test. this led to the for...
126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...
this study sought to examine the effect of cooperative game on iranian students achievements in english alphabet learning. cooperative games are games, in which players or teams work together towards a common goal without defeating someone. the methodology used in this study was experimental. the population of the study was 60 female students from the grade one in secondary school in tabriz, ir...
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