امروزه استفاده از ترکیبات ضد میکروبی طبیعی از جمله عصاره ها و پودر ها در نگهداری مواد غذایی از رشد چشمگیری برخوردار است. در این تحقیق اثرات ضد میکروبی عصاره و پودر گیاهان تیره نعناع (آویشن، نعناع و کاکوتی) در جلوگیری از رشد استافیلوکوکوس اورئوس در نمونه های دوغ صنعتی بررسی شد. برای این منظور 3 غلظت از هر عصاره (0، 0/075 و 0/15) v/v %و از هر پودر (0، 0/075 و 0/15) v/v % تهیه گردید. مرگ ...

increasing academic and professional language demands around the world are not a deniable fact. the purpose of this study was to investigate english language needs and communication needs of the chemistry students at master and ph.d. levels at the iranian universities. in this research, different methods were used including un-structured interview, structured interview, and two sets of question...

abstract a fundamental study of “historio-graphic metafiction” and “literary genres”, as introduced in “new historical philosophy”, and tracing them in the works of julian barnes having studied the two novels, the porcupine and arthur & george, by julian barnes, the researcher has applied linda hutcheon’s historio-graphic metafictional theories to them. the thesis is divided into five cha...

there is no doubt that human being needs to become integrated with industry and industry needs to be progressed, daily. on the other hand, serious events in industrial units specially in oil industries has been shown that such damages and events are industry related ones. the consequence of such events and damages which resulted in chemical and poisoned explosions and loss of life and property ...

nowadays,tourism industry considered as one of the main sources of income of a country.unfortunately and despite of owning plenty of cultural historical and natural attractions, iran has not reached to a proper position in this field. besides, the historical cities of a country are considered as the income resource and national wealth of it. qazvin with a rich cultural precedent, have suitable ...

در این آزمایش اثرات سطوح مختلف پری بیوتیک و پروبیوتیک بر سیستم آنتی اکسیدانی و برخی ویژگی-های خونی جوجه های گوشتی تحت تنش گرمایی مورد بررسی قرار گرفت. در این مطالعه از 256 جوجه گوشتی راس 308 استفاده شد که بطور تصادفی به 8 گروه با 4 تکرار و در هر تکرار 8 جوجه تقسیم شدند. تیمارهای آزمایشی شامل: تیمار 1 بعنوان شاهد در نظر گرفته شد و از جیره پایه تغذیه شدند، تیمار 2،3 و 4 که جیره پایه به همراه 025/...