نتایج جستجو برای: these three species
تعداد نتایج: 4216236 فیلتر نتایج به سال:
Abstract According to COI DNA barcoding testing, the marine bivalve mollusc Mactra chinensis , which is native Asia-Pacific region, diverged into three species. These species were preliminary characterized as M. clade I, II and III. To find out whether it possible morphologically distinguish samples representing genetic clades, we examined color of shells structure spermatozoa. It was found tha...
Glyphosate, N–(phosphonomethyl) glycine, has been widely used to control agricultural weeds in the north of Iran. However, it is also supposed to have adverse effects on natural sturgeon population. The present study was undertaken to evaluate the acute toxicity of glyphosate to three different sturgeon species (Huso huso, Acipenser stellatus, and A. persicus) under laboratory conditions. Fis...
Background: Pharmaceutical industries around the world are struggling for finding new approaches to fight cancer and many researchers are involved in this process to find new drug candidates. Aims: The current study aimed at investigating the new marine natural products with anticancer potential from the three Persian Gulf Holothuria sea cucumbers. <st...
this study provides new data on chromosomal characteristics and dna barcoding of three endemic loaches of iran: spiny southern loach cobitis linea (heckel, 1847), persian stream loach oxynoemacheilus persa (heckel, 1848) and tongiorgi stream loach oxynoemacheilus tongiorgii (nalbant & bianco, 1998). the chromosomes of these fishes were investigated by examining metaphase chromosome spreads ...
the purpose of this thesis was to investigate how differently metacognitive, cognitive, and social/affective strategies affect l2 learners’ reading comprehension. to this end, the study employed a quasi-experimental design with a placement test as a proficiency test to find the homogeneity of groups. three classes were randomly selected as the experimental groups (n =90), and each class was tau...
آموزش واژه با بهره گیری از یادگیری تلفیقی و نرم افزارهای چند رسانه ای در کلاس های آموزش زبان انگلیسی
the purpose of this study was to investigate the impact of blended learning and multimedia softwares on iranian efl students vocabulary learning. in addition, the present study tried to examine the extent to which multimedia softwares can be applied into efl classes in iran. it also attempted to find out students attitudes toward using these softwares. to this end, 87 iranian efl learners at el...
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