نتایج جستجو برای: tollens method
تعداد نتایج: 1630201 فیلتر نتایج به سال:
The presented contribution is aimed on the study of influence of various surfactants and polymers on the kinetics of reduction of diamminsilver complex cation in alkaline media using D-maltose as a reducing sugar (modified Tollens reaction). From the group of surfactants, the following types were used: anionic (sodium dodecylsulfate and sodium dodecylbenzenesulfonate), cationic (cetyltrimethyla...
In 1999 a great multi-site clinical trial known as the randomised Aldactone evaluation study (RALES) showed that the use of spironolactone importantly reduced complications attributable to chronic heart failure without major negative side effects. Recently, RALES has been questioned by a large scale observational study in the Ontario population. In contrast with predictions, the complications a...
This paper challenges the widely accepted claim that "classical" cognitive architectures can explain the systematicity of cognition (Fodor & Pylyshyn, 1988). There are plausible ways of rendering more precise the systematicity hypothesis (as standardly formulated) in which it is entailed by classical architectures, and other plausible ways in which it is not. Therefore, it is not a determinate ...
The aim of this article is to verify two predictions resulting from the mental models theory of conditional reasoning. First, the denial of antecedent (DA) and modus tollens (MT) inferences should take longer to verify than modus ponens (MP) and af®rmation of consequent (AC) because the former require subjects to ̄esh out the initial model whereas the latter do not. This prediction was con®rmed...
We address an argument by Floridi (2009, 2011), to the effect that digital and analogue are not features of reality, only of modes of presentation of reality. One can therefore have an informational ontology, like Floridi’s Informational Structural Realism, without commitment to a supposedly digital or analogue world. After introducing the topic in Section 1, in Section 2 we explain what the pr...
The Argument from the Poverty of the Stimulus (APS) still dominates a substantial part of the research in theoretical linguistics. While in generative approaches, the APS provides the foundation of the innateness hypothesis; in other paradigms (usage-based, interactionist, cognitivist) the argument is central because it is argued against it. Poverty of the stimulus arguments are indeed theoreti...
today, scouring is one of the important topics in the river and coastal engineering so that the most destruction in the bridges is occurred due to this phenomenon. whereas the bridges are assumed as the most important connecting structures in the communications roads in the country and their importance is doubled while floodwater, thus exact design and maintenance thereof is very crucial. f...
abstract biometric access control is an automatic system that intelligently provides the access of special actions to predefined individuals. it may use one or more unique features of humans, like fingerprint, iris, gesture, 2d and 3d face images. 2d face image is one of the important features with useful and reliable information for recognition of individuals and systems based on this ...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...
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