نتایج جستجو برای: aggregation phenomena

تعداد نتایج: 183773  

Journal: :اقتصاد و توسعه کشاورزی 0
حبیب اله سلامی علی محمد جعفری زینب شکوهی

while ignoring income distribution and estimating aggregate demand generally leads to aggregation bias and thus, does not reflect households’ demand properly, yet aggregation bias is rarely considered in empirical demand studies and simply is ignored in most cases. the objective of the present study is to estimate aggregation bias in households’ demand for various types of meats and to evaluate...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2012
William R Heinson Christopher M Sorensen Amitabha Chakrabarti

Stimulated by experiments, we have carried out detailed simulations of aggregation in the presence of shear in a model colloidal system with a short-range attractive potential. For weak shear rates, we find that the shear enhanced the aggregation and that the long-time state of the system is independent of the shear history. For strong shear rates, precipitous fragmentation occurred after the s...

Journal: :iranian journal of pharmaceutical research 0
marjan esfahanizade department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. central research laboratories, shahid beheshti university of medical sciences, tehran, iran shohreh mohebbi department of medicinal chemistry, school of pharmacy, zanjan university of medical sciences, zanjan, iran. behnam dashtbozorg department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran salimeh amidi department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran ali gudarzi department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran seyed abdolmajid ayatollahi department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran phytochemistry research center, shahid beheshti university of medical sciences, tehran, iran

a series of novel 2-aminopyrimidine and 2-substituted-4,6-diaminopyrimidine derivatives have been synthesized and their anti platelet aggregation activities were assessed against adp and arachidonic acid- induced platelet aggregation in human plasma using light transmission aggregometry. none of the compounds showed satisfactory activity against the aggregation induced by adp. however, satisfac...

1995
John Wilkinson

Aggregation is gaining attention as an important phenomenon in automated natural language generation. The small quantity of previous work which deals with this subject suuers from some conceptual diiculties, including inadequate deenition (i.e., as a process which eliminates redundancy), vagueness as to its locus in the generation process, and unclear relation to other phenomena. It is conclude...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2013
Linda Jan Christian Punckt Boris Khusid Ilhan A Aksay

The mechanisms leading to the deposition of colloidal particles in a copper-gold galvanic microreactor are investigated. Using in situ current density measurements and particle velocimetry, we establish correlations between the spatial arrangement and the geometry of the electrodes, current density distribution, and particle aggregation behavior. Ionic transport phenomena are responsible for th...

2006
János Fodor Imre J. Rudas John von Neumann

This paper summarizes some results of the authors’ research that have been carried out in recent years on generalization of conventional aggregation operators. Aggregation of information represented by membership functions is a central matter in intelligent systems where fuzzy rule base and reasoning mechanism are applied. Typical examples of such systems consist of, but not limited to, fuzzy c...

Journal: :Bioscience, biotechnology, and biochemistry 2011
Mitsuaki Sanada Kouichi Kuroda Mitsuyoshi Ueda

GTS1 in yeast Saccharomyces cerevisiae is a pleiotropic gene, the expression of which affects a wide range of biological phenomena. A genome-wide transcriptional analysis identified genes upregulated in response to GTS1 induction, most of which were found to be regulated by the Tup1-Cyc8 co-repressor. Among the upregulated genes, FLO1 was indispensable for cell aggregation, one of the pleiotrop...

Journal: :iranian journal of fuzzy systems 2011
naim cagman serdar enginoglu filiz citak

in this work, we define a fuzzy soft set theory and its related properties. we then define fuzzy soft aggregation operator that allows constructing more efficient decision making method. finally, we give an example which shows that the method can be successfully applied to many problems that contain uncertainties.

2004
Oscar Conchillo-Solé Natalia S de Groot Francesc X Avilés Josep Vendrell Xavier Daura Salvador Ventura

Background: Protein aggregation correlates with the development of several debilitating human disorders of growing incidence, such as Alzheimer's and Parkinson's diseases. On the biotechnological side, protein production is often hampered by the accumulation of recombinant proteins into aggregates. Thus, the development of methods to anticipate the aggregation properties of polypeptides is rece...

2011
Petranka Krumova Erik Meulmeester Manuel Garrido Marilyn Tirard He-Hsuan Hsiao Guillaume Bossis Henning Urlaub Markus Zweckstetter Sebastian Kügler Frauke Melchior Mathias Bähr Jochen H. Weishaupt

Posttranslational modification of proteins by attachment of small ubiquitin-related modifier (SUMO) contributes to numerous cellular phenomena. Sumoylation sometimes creates and abolishes binding interfaces, but increasing evidence points to another role for sumoylation in promoting the solubility of aggregation-prone proteins. Using purified α-synuclein, an aggregation-prone protein implicated...

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