122,472 research outputs found
Orthogonally Bi-Functional Fluorescent Zeolite-L Micro-crystals
No full textMicrocrystals of zeolite L are functionalized with two different fluorescent dyes in a spatially resolved manner. The multiple functionalities and the selective derivatization of the channel entrances and of the coat of the zeolites result in interesting photophysical behavior as well as potential uses. The concept shown for the dyes can in principle be applied to any type of molecule
Análise da "cola" no processo ensino-aprendizagem
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.A presente pesquisa aborda o fenômeno "cola" no ensino superior e suas implicações nos procedimentos pedagógicos, tomando como referência para análise a atividade acadêmica no curso de Psicologia de um Centro Universitário de Belo Horizonte, Minas Gerais. Os comportamentos de alunos que "colam" neste espaço, em situações formais de avaliação da aprendizagem, foram observados porque se considera que a transmissão e a apropriação do conhecimento, como produto sócio-histórico, são marcados pela particularidade dos sujeitos envolvidos nesse processo. A partir da perspectiva sociointeracionista e considerando a dimensão ética das relações humanas, trabalhou-se com conceitos relacionados à área de educação presencial, à de educação a distância e à Psicologia, que serviram de guia para o estudo. Utilizando-se de questionário estruturado, o enfoque priorizou as questões referentes a ocorrência do fenômeno "cola" e associações possíveis à relação professor-aluno em situações de ensino-aprendizagem. Os dados apresentam a posição dos entrevistados frente ao fenômeno, permitindo uma análise sobre as mudanças subjetivas ao longo da vida escolar e acadêmica dos mesmos, bem como uma aproximação a outros pesquisadores do campo da avaliação educacional
La nullità del procedimento come motivo di reclamo del decreto di chiusura del fallimento
No full textNella sentenza in esame la Corte di Cassazione chiarisce quali possano essere i motivi del
ricorso proponibile contro il decreto di chiusura del fallimento e nega che essi si possano identificare
con eventuali irregolarità del procedimento. La Corte parte dal presupposto che in presenza di
una delle ipotesi previste dall’art. 118 L. Fall. il giudice debba disporre la chiusura del fallimento,
per arrivare a concludere che solo la mancanza dei presupposti di legge può essere motivo di reclamo
Explicit Evidence on an Implicit Contract
No full textWe offer the first direct evidence of an implicit contract in a goods market. The evidence we offer comes from the market for Coca-Cola. We demonstrate that the Coca-Cola Company left a substantial amount of written evidence of its implicit contract with its consumers—a very explicit form of an implicit contract. The contract represented the promise of a five cent (nominal) price and adherence to the “Secret Formula”. In general, the implicit nature of such contracts makes observation difficult. To overcome this difficulty, we adopt a narrative approach. Based on the analysis of a large number of historical documents obtained from the Coca-Cola Archives and other sources, we offer evidence of the Coca-Cola Company both acknowledging and acting on this implicit contract. We also make another unique contribution by exploring quality as a margin of adjustment available to Coca-Cola. The implicit contract included a promise not only of a constant nominal price but also a constant quality (i.e., 6.5 oz. of the Secret Formula). During a period of over 70 years, we find evidence of only a single case of true quality change. By studying the margin of adjustment the Coca-Cola Company chose in response to changes in market conditions, we demonstrate that the perceived costs of breaking the implicit contract were large. We argue that one piece of direct evidence on the magnitude of these costs is the aftermath “New Coke’s” introduction in 1985.Implicit Contract, Explicit Contract, Invisible Handshake, Customer Market, Long- Term Relationship, Price Rigidity, Nickel Coke, Coca-Cola
Luminescence quenching measurements on zeolite L monolayers
No full textThe luminescence quenching of the oxygen sensitive Ru2+ complex (Ru-ph4-TMS) used as a stopcock and attached to a zeolite L monolayer has been investigated. The luminescence lifetime of the attached Ru-ph4-TMS was the same under N2 and under O2 atmosphere. This remarkable result is attributed to the shielding provided by the channels of the zeolite L crystals arranged as a monolayer. The emitting 3MLCT state of the Ru-ph4-TMS stopcock is localized on the ligand bearing the phenyl groups forming the tail of this complex, which deeply penetrates into the zeolite L channel
Assembly of linear chains consisting of alternating silica beads and zeolite L crystals by nitroxide exchange reactions
No full textMild surface nitroxide exchange reactions are applied to build up linear assemblies of dye-loaded zeolite L crystals using diradical linker moieties as connecting entities. In addition, the preparation of mixed hybrid chains consisting of alternating zeolite L crystals and silica beads by applying a similar methodology is reported
Site-specific immobilization of proteins at zeolite L crystals by nitroxide exchange reactions
No full textSite-selective immobilization of dyes and different protein recognizing entities at the surface of zeolite L crystals using mild radical nitroxide exchange reactions is reported. Exposure of these crystals to aqueous protein solutions leads to site-selective immobilization of proteins onto the crystals
"The Real Thing:" Nominal Price Rigidity of the Nickel Coke, 1886-1959
No full textWe report that the price of a 6.5oz Coke was 5¢ from 1886 until 1959. Thus, we are documenting a nominal price rigidity that lasted more than 70 years! The case of Coca-Cola is particularly interesting because during the 70-year period there were substantial changes in the soft drink industry as well as two World Wars, the Great Depression, and numerous regulatory interventions and lawsuits, which led to substantial changes in the Coca-Cola market conditions. The nickel price of Coke, nevertheless, remained unchanged. We find that this unusual rigidity is best explained by (1) a contract between the Company and its parent bottlers that encouraged retail price maintenance, (2) a single-coin vending machine technology, which limited the Company's price adjustment options due to limited availability and unreliability of the existing flexible price adjustment technologies, and (3) a single-coin monetary transaction technology, which limited the Company's price adjustment options due to the customer "inconvenience cost." We show that these price adjustment costs are of a different nature than the standard menu cost, and their estimates exceed the existing estimates by an order of magnitude. A possible broader relevance of the nickel Coke phenomenon is discussed in the context of Nickel and Dime Stores, which were popular in the US in the late 1800s and the early 1900s.Sticky Prices, Cost of Adjustment, Menu Cost, Retail Price Maintenance, Single-Coin Vending Machine, Customer Inconvenience Cost, Coca-Cola, Coke, Nickel Coke, Pepsi, Nickel and Dime Stores
"The Real Thing:" Nominal Price Rigidity of the Nickel Coke, 1886-1959
No full textWe report that the price of a 6.5oz Coke was 5¢ from 1886 until 1959. Thus, we are documenting a nominal price rigidity that lasted more than 70 years! The case of Coca-Cola is particularly interesting because during the 70-year period there were substantial changes in the soft drink industry as well as two World Wars, the Great Depression, and numerous regulatory interventions and lawsuits, which led to substantial changes in the Coca-Cola market conditions. The nickel price of Coke, nevertheless, remained unchanged. We find that this unusual rigidity is best explained by (1) a contract between the Company and its parent bottlers that encouraged retail price maintenance, (2) a single-coin vending machine technology, which limited the Company’s price adjustment options due to limited availability and unreliability of the existing flexible price adjustment technologies, and (3) a single-coin monetary transaction technology, which limited the Company’s price adjustment options due to the customer “inconvenience cost.” We show that these price adjustment costs are of a different nature than the standard menu cost, and their estimates exceed the existing estimates by an order of magnitude. A possible broader relevance of the nickel Coke phenomenon is discussed in the context of Nickel and Dime Stores, which were popular in the US in the late 1800s and the early 1900s.Sticky Prices, Cost of Adjustment, Menu Cost, Retail Price Maintenance, Single-Coin Vending Machine, Customer Inconvenience Cost, Coca-Cola, Coke, Nickel Coke, Pepsi, Nickel and Dime Stores
The Real Thing: Nominal Price Rigidity of the Nickel Coke, 1886–1959
No full textWe report that the price of a 6.5oz Coke was 5¢ from 1886 until 1959. Thus, we are documenting a nominal price rigidity that lasted more than 70 years! The case of Coca-Cola is particularly interesting because during the 70-year period there were substantial changes in the soft drink industry as well as two World Wars, the Great Depression, and numerous regulatory interventions and lawsuits, which led to substantial changes in the Coca-Cola market conditions. The nickel price of Coke, nevertheless, remained unchanged. We find that this unusual rigidity is best explained by (1) a contract between the Company and its parent bottlers that encouraged retail price maintenance, (2) a single-coin vending machine technology, which limited the Company’s price adjustment options due to limited availability and unreliability of the existing flexible price adjustment technologies, and (3) a single-coin monetary transaction technology, which limited the Company’s price adjustment options due to the customer “inconvenience cost.” We show that these price adjustment costs are of a different nature than the standard menu cost, and their estimates exceed the existing estimates by an order of magnitude. A possible broader relevance of the nickel Coke phenomenon is discussed in the context of Nickel and Dime Stores, which were popular in the US in the late 1800s and the early 1900s.Sticky Prices; Cost of Adjustment; Menu Cost; Retail Price Maintenance; Single-Coin Vending Machine; Customer Inconvenience Cost; Coca-Cola; Coke; Nickel Coke; Pepsi; Nickel and Dime Stores
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