BASS CYCLIC UNITS AS FACTORS IN A FREE GROUP IN INTEGRAL GROUP RING UNITS

Marciniak and Sehgal showed that if u is a non-trivial bicyclic unit of an integral group ring then there is a bicyclic unit v such that u and v generate a non-abelian free group. A similar result does not hold for Bass cyclic units of infinite order based on non-central elements as some of them have finite order modulo the center. We prove a theorem that suggests that this is the only limitation to obtain a non-abelian free group from a given Bass cyclic unit. More precisely, we prove that if u is a Bass cyclic unit of an integral group ring ZG of a solvable and finite group G, such that u has infinite order modulo the center of U(ZG) and it is based on an element of prime order, then there is a non-abelian free group generated by a power of u and a power of a unit in ZG which is either a Bass cyclic unit or a bicyclic unit.

Electrostatic and Hydrophobic Interactions Involved in CNT Biofunctionalization with Short ss-DNA

This work is aimed at studying the adsorption mechanism of short chain 20-mer pyrimidinic homoss-DNA (oligodeoxyribonucleotide, ODN: polyC(20) and polyT(20)) onto CNT by reflectometry. To analyze the experimental data, the effective-medium theory using the Bruggemann approximation represents a Suitable optical model to account for the surface properties (roughness, thickness, and optical constants) and the size of the adsorbate. Systematic information about the involved interactions is obtained by changing the physicochemical properties of the system. Hydrophobic and electrostatic interactions are evaluated by comparing the adsorption oil hydrophobic CNT and oil hydrophilic silica and by Modulating the ionic Strength With and without Mg(2+). The ODN adsorption process oil CNT is driven by hydrophobic interactions only when the electrostatic repulsion is Suppressed. The adsorption mode results in ODN molecules in a side-on orientation with the bases (nonpolar region) toward the surface. This unfavorable orientation is partially reverse by adding Mg(2+). On the other hand, the adsorption oil silica is dominated by the strong repulsive electrostatic interaction that is screened at high ionic strength or mediated by Mg(2+). The cation-mediated process induces the interaction of the phosphate backbone (polar region) with the surface, leaving the bases free for hybridization. Although the general adsorption behavior of the pyrimidine bases is the same, polyC(20) presents higher affinity for the CNT Surface due to its acid-base properties.

Actitudes hacia el catalán : un estudio sociolingüístico de principiantes del catalán en Barcelona

This study focuses on the Catalan language of Catalonia, a region located in the east of Spain. There are many immigrants living in this region who decide to learn the Catalan language in hope of finding a job or to integrate in the Catalan society. The main aim of this study was to discover the types of language attitudes the beginners of Catalan show towards this language (general, instrumental and integrative attitudes). Language attitudes are of importance because it can indicate the “health” of a minority language, such as is usually considered Catalan. The method applied was direct, where the informants had to answer a written questionnaire. The results of the study show positive attitudes towards the Catalan language and its general use in Catalonia. The main conclusions of the study were that the informants showed positive and slightly more instrumental attitudes towards Catalan, indicating that the main motive of learning the language was more of practical use than integrative motives.

Actitudes hacia el castellano y el catalán : Un estudio sociolingüístico entre veinteañeros y sus padres en el ámbito

This study focuses on the attitudes toward Catalan and Spanish, the two main languages spoken in Barcelona, on the East coast of Spain, in Southwestern Europe. The aim of this study was to compare those attitudes between two generations of informants. The informants of one generation were born 1984-93 and were thus in their twenties at the time of the investigation, in 2013. The aforementioned generation was labelled with the name "Children", whereas their parents were labelled with the name "Parents". The method applied was direct, where the informants had to answer an online survey, and the number of informants that were studied was 15 for each generation, or 30 in total. The conclusion of the study, derived from the results to the aforementioned survey, is that the generation of the Children have a more positive attitude toward Catalan and more negative toward Spanish than the generation of the Parents.

Actitudes hacia el murciano : Un estudio comparativo de actitudes que presentan nativosmurcianos e hispanohablantes no peninsulares.

Murciano is a non-standard variety that is spoken in Murcia, a region in the southeast of Spain.This study aims to investigate which are the attitudes toward the variety from the dimensions ofsolidarity and status.We will use two groups of informants. One integrated by 20 natives from Murcia who use thevariety, and the other by 16 non-spanish-natives that have never been in contact with murciano.The intention with the study is to investigate which attitudes both groups show towardmurciano and analyse the differences and similarities between them. We expect the natives toshow positive attitudes in the dimension of solidarity, and negatives in the dimension of status.We expect the non-natives to show the same kind of attidudes toward both varieties (thestandard-spanish and murciano) while they have never been in contact with the non-standardand therefore should not have the sociocultural background that help people to create negativeattitudes toward non-standard varieties.The chosen method is an indirect one, and the used technique is the matched-guise. Theinformants listen to two different voices talking two times each: one in standard-spanish andone in murciano. After they have listened to one voice in one variety they answer 10 differentquestions to measure their attitudes in the both dimensions we aim to investigate. The resultsare analysed from the gender and the education variables.The results show that the natives attitudes toward murciano are positives from the solidaritydimension but negatives from the status one, results that confirm the first hypothesis. However,the study shows that the non-natives also have negative attitudes toward the variety in the statusdimension but positive toward the standard-spanish, which means that the second hypothesiswas wrong, something that could have been caused by the fact that all non-natives had a higheducational-level. Other studies show that education is a factor that can have a bearing onhaving negative attitudes toward non-standard varieties.

Estudio comparativo de las actitudes hacia elmurciano.

The aim of this study is to measure and analyse the attitudes towards a linguisticvariety called murciano. This variety is a regional standard of Spanish, namely, theSpanish talked in Murcia, a city located in the South of Spain.There are two groups of informants in this study. The first group is composed of12 people from Murcia and the second group consists of 12 people who know thevariety of murciano but are not natives from the city of Murcia. The methodapplied is the indirect method matched guise. The informants listened to fourdifferent recordings of voices acting as either a Spanish speaking person or amurciano speaking person. Ten short questions related with the voices were askedto the informants, who gave their answers on a Likert attitude scale.The results show that the attitudes towards murciano and the standard Spanishdiffer in both groups of informants. The group of natives from Murcia show morepositive attitudes toward the variety murciano than the group of non-natives fromMurcia. However, when the results towards the variety murciano and the standardSpanish are compared with each other, it is the standard Spanish the one thatreceives more positive valuations. In addition, the observations show that thegroup of non-natives from Murcia are more critical and negative in their attitudestoward the different linguistic varieties than the group of natives from Murcia.

Tipos de tricomas em genótipos de Lycopersicon

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Atuação do enfermeiro na estratégia de atenção integrada às doenças prevalentes na infância

This study aimed to describe nurses' actions in the strategy of Integrated Management of Childhood Illness in the city of Natal, Rio Grande do Norte. This is a qualitative study with descriptive approach. The universe consisted of nurses from the Family Health Strategy, totaling 16 participants. For the research project was submitted for approval by the Ethics Committee of the Universidade Federal do Rio Grande do Norte, obtaining Opinion No. 187/2012. Data were obtained in two ways: a questionnaire survey to profile the training of nurses and an interview guided by a structured interview. Interviews were treated in the light of analysis of thematic category Bardin. The results showed the central thematic study "Integrated Management of Childhood Illness in the context of nursing activities" category and three analyzes: "Understanding the Integrated Management of Childhood Illness", "Difficulties invibializam use IMCI "and" Working conditions for nurses in the Integrated Management of Childhood Illness. " It is observed that nurses consider the Integrated Management of Childhood Illness useful, effective and important to keep sick children within the logic curative. However disregard the character of health promotion and disease prevention thereof. It was found that the participants still hold the attendance of crinaças within the biomedical model and that these same professionals are subjected to increasingly precarious working conditions and unhealthy due to lack of human and material resources. It was found that the interviewees do not follow the protocols of strategy because of barriers related to prescription medications by nurses, the medical, the lack of incentives, training and supervision by the municipal health and the Regional Nursing Council

A internacionalização das empresas espanholas

The internationalization of Spanish companies. The purpose of this article is to present the process of (late) internationalization of Spanish companies occurred between the years of 1990 and 2000, its determinants and the degree of involvement of the State in this process. We can point out some determinants in this process, such as: a fall in the profitability of the domestic market, a shrinking of the Spanish market, imminent danger of the acquisition of Spanish companies in the local market due to trade and financial openness. We conclude that this process was not fortuitous. There was a clear perception by the government that this process would not only be relevant but also necessary for the entrance of Spain in the international economic and geo-political set.

Foreign Investment in Latin America and the Caribbean 1999

Includes bibliography

Aportes de los biocombustibles a la sustentabilidad del desarrollo en América Latina y el Caribe

Incluye Bibliografía

Monitoring Caribbean information societies

Includes bibliography

Social health protection for the elderly in the English-speaking Caribbean

Includes bibliography

Indicadores de productividad para la industria portuaria: aplicación en América Latina y el Caribe

Incluye Bibliografía

Annotated provisional agenda

Includes bibliography