نتایج جستجو برای: chemical factor and packaging

تعداد نتایج: 16987808  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده زبانهای خارجی 1391

the primary goal of the current project was to examine the effect of three different treatments, namely, models with explicit instruction, models with implicit instruction, and models alone on differences between the three groups of subjects in the use of the elements of argument structures in terms of toulmins (2003) model (i.e., claim, data, counterargument claim, counterargument data, rebutt...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم پایه 1388

آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...

Journal: Journal of Herbal Drugs 2016
Amir Pouya Ghandehari Yazdi Elahe Amani, Leila Sedaghat Boroujeni,

Introduction: Active packaging is one of the innovations in food packaging industry that would be a respons to the changing needs of consumers and markets. In this technique, materials such as adsorbents oxygen, moisture, carbon dioxide, ethylene and carbon dioxide-releasing flavor compounds, antimicrobials, antioxidants and various aromatic compounds are used. In the last deca...

The purpose of food packaging is to preserve the quality and safety of the food it contains from the time of manufacture to the time it is used by the consumer. Recently, the demand for safe and high quality foods, as well as changes in consumer preferences have led to the development of innovative and novel approaches in food packaging technology. One such development is the active food packag...

Journal: :مدیریت ورزشی 0
سارا کشکر استادیار دانشکدۀ تربیت بدنی و علوم ورزشی دانشگاه علامه طباطبائی، تهران، ایران حمید قاسمی استادیار دانشکدۀ تربیت بدنی و علوم ورزشی دانشگاه پیام نور، تهران، ایران پری فرجی زاده کارشناس ارشد مدیریت ورزشی دانشکدۀ تربیت بدنی و علوم ورزشی دانشگاه علامه طباطبائی، تهران، ایران

the aim of this study was to investigate the role of sport shoes packaging in persuading different groups of athletes to buy sport shoes. the methodology was descriptive-survey. the statistical population consisted of 1800 athletes of sport clubs of poldokhtar city. 329 subjects were selected as the sample by morgan table using clustering random sampling method in those clubs. a researcher-made...

The purpose of food packaging is to preserve the quality and safety of the food it contains from the time of manufacture to the time it is used by the consumer. Recently, the demand for safe and high quality foods, as well as changes in consumer preferences have led to the development of innovative and novel approaches in food packaging technology. One such development is the active food packag...

1998
Rao R. Tummala R. R. TUMMALA

ext-generation electronic packaging must be consistent with both semiconductors and systems. The packages of the past have been mostly passive containers for semiconductors. Given the need for extremely compact, ultra-low-cost electronic systems for the 21st century, and given that a wafer fabrication plant can cost $1 to $5 billion, what should packaging be in the future? Any packaging technol...

Journal: Journal of Herbal Drugs 2016
Amir Pouya Ghandehari Yazdi Elahe Amani, Leila Sedaghat Boroujeni,

Introduction: Active packaging is one of the innovations in food packaging industry that would be a respons to the changing needs of consumers and markets. In this technique, materials such as adsorbents oxygen, moisture, carbon dioxide, ethylene and carbon dioxide-releasing flavor compounds, antimicrobials, antioxidants and various aromatic compounds are used. In the last deca...

Bamishaiye, Eunice Iyabo Olayemi, Foline Folorunsho Raji, Abdulganiy Olayinka

Six different composite packaging materials were tested with the trades’ practice of polythene bags in storing smoked catfish for a period of six months. The thickness of the packaging materials ranges from 0.23 to 046 mm with water and oil absorption rates of the packaging materials varies from 0.23 to 10.00 and 0.28 to 10.857 glcm2/mm respectively. The impact resistance weight also varies fro...

Journal: :Biochemical Society symposium 1995
G Scott

It is current practice to test all new additives for packaging polymers for toxicity before permitting them to be used in food contact applications. However, many antioxidants and stabilizers act sacrificially and are converted to oxidation products in the process of preventing polymer degradation. In most cases, little is known about the toxicity of antioxidant transformation products, and in ...

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