نتایج جستجو برای: food structure

تعداد نتایج: 1816144  

Journal: :Journal of the science of food and agriculture 2007
Pariya Thanatuksorn Kazuhito Kajiwara Toru Suzuki

BACKGROUND Crispness is an important characteristic to be controlled in deep-fat fried products. The physical state of food polymers influences the development of cellular structure and textural qualities of fried food. Glassy state is believed to play an important role in the mechanical properties of low-moisture food. Therefore, an understanding of the physicochemical phenomena in the develop...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2010
Owen L Petchey Ulrich Brose Björn C Rall

Few models concern how environmental variables such as temperature affect community structure. Here, we develop a model of how temperature affects food web connectance, a powerful driver of population dynamics and community structure. We use the Arrhenius equation to add temperature dependence of foraging traits to an existing model of food web structure. The model predicts potentially large te...

Journal: :Proceedings. Biological sciences 2012
Anna Eklöf Matthew R Helmus M Moore Stefano Allesina

Explaining the structure of ecosystems is one of the great challenges of ecology. Simple models for food web structure aim at disentangling the complexity of ecological interaction networks and detect the main forces that are responsible for their shape. Trophic interactions are influenced by species traits, which in turn are largely determined by evolutionary history. Closely related species a...

Journal: :PLoS Biology 2008
Jennifer A Dunne Richard J Williams Neo D Martinez Rachel A Wood Douglas H Erwin

A rich body of empirically grounded theory has developed about food webs--the networks of feeding relationships among species within habitats. However, detailed food-web data and analyses are lacking for ancient ecosystems, largely because of the low resolution of taxa coupled with uncertain and incomplete information about feeding interactions. These impediments appear insurmountable for most ...

Journal: :Ecological applications : a publication of the Ecological Society of America 2017
J Ryan Bellmore Joseph R Benjamin Michael Newsom Jennifer A Bountry Daniel Dombroski

Restoration is frequently aimed at the recovery of target species, but also influences the larger food web in which these species participate. Effects of restoration on this broader network of organisms can influence target species both directly and indirectly via changes in energy flow through food webs. To help incorporate these complexities into river restoration planning, we constructed a m...

Journal: :acta medica iranica 0
z. pourpak a. farhoudi s. arshi m. movahedi m. gharegozlou f. yazdani m. mesdaghi

the prevalence of food allergy is different in various nations. the identification of the most common food allergens is a priority in any population to provide effective preventive and curative measures. the aim of this study is to determine the most common food allergens in iranian children. one hundred and ninety children with skin, respiratory or gastrointestinal symptoms, which were thought...

Journal: :nutrition and food sciences research 0
majid hasan-ghomi department of clinical nutrition and dietetics, faculty of nutrition sciences and food technology, national nutrition and food technology research institute, shahid beheshti university of medical sciences, tehran, iran parvin mirmiran health technology assessment, standardization and tariff management, deputy of curative affairs ministry of health and medical education, tehran, iran golaleh asghari nutrition and endocrine research center, obesity research center, research institute for endocrine sciences, shahid beheshti university of medical sciences, tehran, iran zohreh amiri department of basic sciences, faculty of nutrition sciences and food technology, national nutrition and food technology research institute, shahid beheshti university of medical sciences, tehran, iran nafiseh saadati nutrition and endocrine research center, obesity research center, research institute for endocrine sciences, shahid beheshti university of medical sciences, tehran, iran saeed sadeghian nutrition and endocrine research center, obesity research center, research institute for endocrine sciences, shahid beheshti university of medical sciences, tehran, iran

background and objectives: this study was undertaken to determine the relationship between food security and individual dietary diversity score (idds). materials and methods: this population-based cross-sectional study was conducted on 200 non-diabetic individuals aged ≥40 years, selected randomly from the tehran lipid and glucose study. household food security was measured using a validated un...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1392

this study tried to explore disciplinary variations of web blurbs across soft and hard knowledge fields on the one hand, and to illustrate how academic publishers exploit interactional metadiscourse devices in move structure of their blurbs on the other.

Journal: :Ecology letters 2012
Lotta Heckmann Barbara Drossel Ulrich Brose Christian Guill

Body-size structure of food webs and adaptive foraging of consumers are two of the dominant concepts of our understanding how natural ecosystems maintain their stability and diversity. The interplay of these two processes, however, is a critically important yet unresolved issue. To fill this gap in our knowledge of ecosystem stability, we investigate dynamic random and niche model food webs to ...

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