نتایج جستجو برای: canned samples were processed under three different temperatures 115

تعداد نتایج: 5784674  

ژورنال: طلوع بهداشت یزد 2013
احمدیان, محمد, دولتشاهی, شیدوش, رجبی گیلان, نادر, ندری, فرشاد, رشادت, سهیلا ,

  Background: Due to discharge of industrial effluent into marine environment, background quantity of heavy metals and their bioaccumulation in marine organism's body including fish is increasing. Thus, determination of mercury content in fish consumed by human is an essential thing.   Methods: In order to evaluate the mercury content of canned tuna fish marketed in Kerman, 70 canned tuna fish ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

Journal: :archives of razi institute 0
behrooz raie jadidi department of chemical engineering, tabriz branch, islamic azad university, tabriz,iran hamid erfan-niya department of chemical and petroleum engineering, university of tabriz, tabriz, iran ali ameghi department of research and development, razi vaccine and serum research institute northwest branch, agricultural research, education and extension organization,marand, iran

avian influenza is one of the most important diseases in avian industry, which also threats human population. thus, vaccination is necessary for controlling this viral disease. in this study, killed vaccine of avian influenza subtype h9n2 and formalin solution (for virus inactivation) were used. it is necessary to study the effect of different factors such as formalin concentration, as well as ...

Journal: :journal of food quality and hazards control 0
r. latorre department of medical and surgical science, university of bologna, bologna, italy j. sadeghinezhad department of basic sciences, faculty of veterinary medicine, university of tehran, tehran, iran b. hajimohammadi research center for molecular identification of food hazards, shahid sadoughi university of medical sciences, yazd, iran f. izadi [email protected] m.t. sheibani department of basic sciences, faculty of veterinary medicine, university of tehran, tehran, iran

background: nowadays, there is an increase of meat and animal carcass consumption worldwide. due to the economic value of meat, the likelihood of using unauthorized tissue is possible in meat products. based on these observations, the aim of the present study was to apply morphological method for detection of unauthorized tissues in processed meat products.  methods: in this study, a total of 2...

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this study examined the effect of prior knowledge and vocabulary teaching on iranian efl learners listening comprehension. the current study has two purposes: one is to investigate the effect of background knowledge on the second language listening comprehension of iranian intermediates and the other is to determine whether second language is facilitated by the introduction of unknown vocabularies in the form of prelistening activities. to conduct the study different instruments such as listening proficiency test and four listening tests such as pre and posttests were used and various statistical processes and techniques including paired-sample t-test, and analysis of variance (anova) were used. the findings of this study supported all three hypotheses tested. differences were found between the means of preteaching vocabulary variable, the background knowledge activation variable, and mean difference between these two strategies variable. subjects scored higher when the unknown words were taught in advance. likewise, subjects scored higher when they were asked some relevant questions about the topic than on those without them. there was, in addition, a significant difference between the means of preteaching vocabulary strategy and background knowledge activation strategy. in fact, preteaching vocabulary had a better effect in enhancing the students’ listening comprehension, in comparison to background knowledge activation strategy.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1390

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1392

the aim of the current study was to investigate the relationship among efl learners learning style preferences, use of language learning strategies, and autonomy. a total of 148 male and female learners, between the ages of 18 and 30, majoring in english literature and english translation at islamic azad university, central tehran were randomly selected. a package of three questionnaires was ad...

2013
Mehdi Zarei Hossein Najafzadeh Ala Enayati Marzieh Pashmforoush

Canned tuna fish are frequently and largely produced and consumed in Iran and also exported. Therefore, their biogenic amines content should be of some concern to human health. In the present study, the levels of histamine, putrescine, tyramine and spermidine in 40 samples of canned tuna fish were determined. Histamine, as the major chemical hazard of seafood products, was detected in 57.5 % of...

Journal: :Environmental science & technology 2010
Arnold Schecter Noor Malik Darrah Haffner Sarah Smith T Robert Harris Olaf Paepke Linda Birnbaum

Bisphenol A (BPA) is a chemical used for lining metal cans and in polycarbonate plastics, such as baby bottles. In rodents, BPA is associated with early sexual maturation, altered behavior, and effects on prostate and mammary glands. In humans, BPA is associated with cardiovascular disease, diabetes, and male sexual dysfunction in exposed workers. Food is a major exposure source. We know of no ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده ادبیات و علوم انسانی 1390

this study explored reading strategy use of tefl ma students when they read academic research articles in english. the purpose of this study was to investigate how this group of readers typically approaches reading academic research articles related to their field of study, and also what they do in reading such research articles. the aim of the present study was bilateral. first, the researcher...

Journal: :مهندسی بیوسیستم ایران 0
صمد صبوری عضو هیات علمی موسسه تحقیقات برنج کشور شیوا روفی گری حقیقت عضو هیات علمی مرکز تحقیقات چای کشور

a cause for breakage of rice kernels during the whitening process could be assumed to be due to the produced heat. it is partly because of abrasion and friction of grains produced by contact against themselves and/or against cone and concave. in this study the effect of different temperatures of brown rice on rice kernels' breakage during the whitening process was investigated. khazar cult...

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