نتایج جستجو برای: macro and micro elements

تعداد نتایج: 16878198  

F.M.I Natrah, Z Muta Harah, B Japar Sidik , W.N Wan Hazma ,

The present study determined and compared contents of macro- (Nitrogen-N, Phosphorus-P, Potassium-K, Calcium-Ca, Magnesium-Mg) and micro- (Zinc-Zn, Iron-Fe, Manganese-Mn, Cupper-Cu) nutrients in four seagrass species big-leaved (BL) Halophila ovalis (R. Br.) Hook. f., small-leaved (SL) H. ovalis (R. Br.) Ascherson, H. spinulosa (R. Br.) Aschers. in Neumayer and Halodule uninervis (Forssk.) Asch...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Erik P Hoel Larissa Albantakis Giulio Tononi

Causal interactions within complex systems can be analyzed at multiple spatial and temporal scales. For example, the brain can be analyzed at the level of neurons, neuronal groups, and areas, over tens, hundreds, or thousands of milliseconds. It is widely assumed that, once a micro level is fixed, macro levels are fixed too, a relation called supervenience. It is also assumed that, although mac...

2002
Diane Vaughan

Powell consider the possibility of a micro-sociological supplement to the macro-sociological focus on structure, order, and persistence that has so far dominated research and theory in the new institutionalism. Searching for some answers, they analyze transformations in sociological theory since Parson's theory of action that offer alternatives to the Parsonian emphasis on norms and roles. They...

Journal: :The European physical journal. B 2009
S M D Seaver A A Moreira M Sales-Pardo R D Malmgren D Diermeier L A N Amaral

We use agent-based modeling to investigate the effect of conservatism and partisanship on the efficiency with which large populations solve the density classification task - a paradigmatic problem for information aggregation and consensus building. We find that conservative agents enhance the populations' ability to efficiently solve the density classification task despite large levels of noise...

2017
Narasimha Rao

Article Info The aim of this study is to investigate the contents of essential, macro and micro elements by the energy-dispersive X-ray fluorescence spectrometry (EDXRF) in different seaweeds (10 red algae, 5 green algae)from collected different regions of Visakhapatnam coast(India). Seaweeds from different estuarine stations were analyzed by X-ray fluorescence, providing results for the concen...

Azam Ghaneei, Azimeh Kadkhodazadegan yazd, Mahmood Vakili, Safar Ali Dehghani,

Objective: In patients with diabetes mellitus, increased rate of lipoprotein oxidation and oxidative stress have important role in diabetic angiopathy, including nephropathy. We designed a study for comparing the level of Ox-LDL in diabetic patients with Macro-albuminuria, Micro-albuminuria, versus Normo-albuminuric. Materials and Methods: One hundred and thirty five patients with type 2 dia...

2012
Ezra Oberfield Devesh Raval

We study the implications of microeconomic heterogeneity for aggregate technology, showing that the aggregate elasticity of substitution between capital and labor can be expressed as a simple function of plant level structural parameters and sufficient statistics for plant heterogeneity. This allows for a new approach to estimating the aggregate elasticity using microeconomic data and allows us...

2010
Laurence Ales Nicolas Petrosky-Nadeau

Business Cycle Accounting (BCA) is a helpful litmus test for quantitive macroeconomic models. Indeed, deviations from the data and a neo-classical growth model can be summarized as distortion of the efficiency of production or to optimality conditions such as leisure-consumption choices and investment Euler equations. These empirical ”wedges” are then a simple diagnostic test for the empirical ...

2010

INTRODUCTION: Clinical researchers lack convenient software tools to investigate mechanisms of bone fracture on a patient-specific basis. Such a tool must be user-friendly and, as bone mineral density alone fails to predict fracture, incorporate both macroand micro-structural information. Micro-parameters relevant to initiation, propagation and arrest of microcracks that cumulatively lead to fr...

Journal: :به زراعی کشاورزی 0
علیرضا عبداله پور کارشناس ارشد، گروه علوم خاک شناسی، دانشکده کشاورزی، دانشگاه گیلان، رشت ـ ایران محمود قاسم نژاد دانشیار گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه گیلان، رشت ـ ایران علی مومن پور دانشجوی دکتری گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه گیلان، رشت ـ ایران علیرضا اشکوری مربی، مؤسسة تحقیقات مرکبات کشور، رامسر ـ ایران

in this study, effect of irrigation duration on concentration of some macro and micro nutrient elements in ‘thompson navel’ orange leaves grafted on three rootstocks was evaluated as a factorial experiment in completely randomized block design. factors included rootstocks in three levels (poncirus trifoliata, citrus aurantium and troyer citrange (citrus sinensis ´ poncitus trifoliata)) and irri...

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