نتایج جستجو برای: a global pollutant and highly toxic element in sea fish and specially tuna fish

تعداد نتایج: 24009726  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده فنی 1393

a problem of computer vision applications is to detect regions of interest under dif- ferent imaging conditions. the state-of-the-art maximally stable extremal regions (mser) detects affine covariant regions by applying all possible thresholds on the input image, and through three main steps including: 1) making a component tree of extremal regions’ evolution (enumeration), 2) obtaining region ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...

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Anzali International Wetland located on the southwestern shore of the Caspian Sea possess a strategic role in establishing the ecological balance between animals and birds owing to its unique features. The wetland acts as a natural reproduction and rehabilitation ground for several groups the Caspian Sea fishes. It also serves as a habitat and spawning ground for the Caspian Sea migratory fish ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1388

the present research was conducted to accomplish two purposes. firstly, it aimed to explore and describe schematic structure or what halliday and hassan (1989, p.64) have called “generic structure potential” (gsp) of american english, iranian persian and iranian english newspaper editorials within systemic functional linguistics. secondly, a quantitative cross-comparison was made to investigate...

Introduction Marine products play a significant role in providing food for the people of the world, but rapid population growth and industrialization have led to the introduction of pollutants such as heavy metals into aquatic animals, one of the main pollutants of these important food sources. Materials & Methods This study was conducted in 2017 on 30 canned tuna fish that were purchased ran...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1391

the present study aimed at exploring cognitions of iranian english teachers within the context of english for academic purposes (eap). to this end, the cognitions of two groups of eap teachers with respect to their pedagogical content knowledge (pck) and their sense of professional identity (pi) were probed. two language teachers and two content instructors who had at least five years of eap te...

Background: Paraquat dichloride is a highly toxic herbicide which is still used in many developing countries. African cat fish (Clarias gariepinus) is a commercially important species in many countries and was selected assess accumulation and elimination of paraquat dichloride in its tissues. Methods: Groups of ten fish with equal lengths and weights were exposed to varying concentrations of...

Journal: :iranian journal of toxicology 0
thomas ikpesu department of biological sciences, federal university otuoke, otuoke, nigeria.

background: paraquat dichloride is a highly toxic herbicide which is still used in many developing countries. african cat fish (clarias gariepinus) is a commercially important species in many countries and was selected assess accumulation and elimination of paraquat dichloride in its tissues. methods: groups of ten fish with equal lengths and weights were exposed to varying concentrations of pa...

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