Person-Environment Fit and Readiness for Change: Exploring the Moderating Role of Leader-Member Exchange and Perceived Organizational Support

This paper was aimed at investigating the interplay of multiple facets of personenvironment fit with individual readiness for change; and to expose potential moderators of this relationship, namely organizational support and quality of relationship with supervisors. The extant research on the relationships between person-environment fit and a number of individual- and organization-level outcomes reveals considerable discrepancies, mainly attributed to the measurement of person-environment fit and to potential moderators. With this in mind, moderated multiple regressions (MMR) were conducted in order to test the hypotheses of existing interaction effects. The results revealed no significant interactions between facets of personenvironment fit and the moderators proposed. However, the significant correlations found between tenure and readiness for change dimensions led to a series of post hoc analyses to explore whether different tenure groups exhibited different relationship patterns across the variables measured in this study, and to investigate a potential moderating effect of tenure on the relationship between person-environment fit and readiness for change. The results indicated that tenure significantly increased the prediction of readiness for change by person-environment fit, underscoring the importance of workforce composition on readiness for change research. The findings obtained hold interesting implications for both research and practice concerning the measurement of person-environment fit, and with respect to the impact of individual- and organization-level variables on the relationship between person-environment fit and readiness for change. These implications, along with limitations of the present study, are discussed

Impact of micronutrients supplementation on bone repair around implants: microCT and counter-torque analysis in rats

The use of natural substances and micronutritional approaches has been suggested as a therapeutic alternative to benefit the bone healing associated with no side effects. Nevertheless, the influence of micronutritional interventions with therapeutic propr2414551sem informaçãosem informaçã

Evaluation Of The Use Of Systemic Antimicrobial Agents By Professionals For The Treatment Of Periodontal Diseases

Aim: To investigate the indication of systemic antimicrobial agents used by dental professionals for treatment of patients affected by periodontal diseases. Methods: Interviews by a questionnaire were held with 225 professionals of different dental specialties and who performed periodontal treatment. Results: Among interviewees, 94% indicated systemic antibiotics as a form of periodontal disease treatment. Their main indication was for periodontal abscesses (80%) followed by aggressive periodontitis (62%) and necrotizing diseases (45%). The most frequently used antibiotics were amoxicillin (81%) and metronidazole (57%). The medications were indicated in association with mechanical therapy by 67% of the professionals. As regards the occasion of indication, 60% indicated systemic antibiotic therapy before and after mechanical periodontal scaling and root planing. Seventy-eight percent of the professionals indicated antibiotics associated with periodontal surgery for access to scaling, and 76% indicated it before and after the surgical procedure. Among the interviewees, 99% took into account systemic involvement for drug administration. Conclusions: It was concluded that a considerable portion of professionals indicate systemic antibiotic-therapy in an incoherent manner and in situations in which there is no indication for antibiotic use, or with ineffective protocols.124285291Herrera, D., Matesanz, P., Bascones-Martínez, A., Sanz, M., Local and systemic antimicrobial therapy in periodontics (2012) J Evid Based Dent Pract., 12, pp. 50-60Matarazzo, F., Figueiredo, L.C., Cruz, S.E., Faveri, M., Feres, M., Clinical and microbiological benefits of systemic metronidazole and amoxicillin in the treatment of smokers with chronic periodontitis: a randomized placebo controlled study (2008) J Clin Periodontol., 35, pp. 885-896Cionca, N., Giannopoulou, C., Ugolotti, G., Mombelli, A., Amoxicillin and metronidazole as an adjunct to full-mouth scaling and root planing of chronic periodontitis (2009) J Periodontol., 80, pp. 364-371Sgolastra, F., Gatto, R., Petrucci, A., Monaco, A., Effectiveness of systemic amoxicillin/metronidazole as adjunctive therapy to scaling and root planing in the treatment of chronic periodontitis: a systematic review and metaanalysis (2012) J Periodontol., 83, pp. 1257-1269Mestnik, M.J., Feres, M., Figueiredo, L.C., Duarte, P.M., Lira, E.A.G., Faveri, M., Short-term benefits of the adjunctive use of metronidazole plus amoxicillin in the microbial profile and in clinical parameters of subjects with generalized aggressive periodontitis (2010) J Clin Periodontol., 37, pp. 353-365Yek, E.C., Citan, S., Topcuoglu, N., Kulekci, G., Issever, H., Kantarci, A., Efficacy of amoxicillin and metronidazole combination for the management of generalized aggressive periodontitis (2010) J Periodontol., 81, pp. 964-974Rodrigues, A.S., Louren, O.D.S., Lima Neto, L.G., Pannuti, C.M., Crespo Hirata, R.D., Hirata, M.H., Clinical and microbiological evaluation, by real-time pcr, of non-surgical treatment of aggressive periodontitis associated with amoxicillin and metronidazole (2012) J Periodontol., 83, pp. 744-752Silva, M.P., Feres, M., Sirotto, T.A., Soares, G.M., Mendes, J.A., Faveri, M., Clinical and microbiological benefits of metronidazole alone or with amoxicillin as adjuncts in the treatment of chronic periodontitis: a randomized placebo-controlled clinical trial (2011) J Clin Periodontol., 38, pp. 828-837Arweiler, N.B., Pietruska, M., Skurska, A., Doliñska, E., Pietruski, J.K., Bläs, M., Nonsurgical treatment of aggressive periodontitis with photodynamic therapy or systemic antibiotics. Three-month results of a randomized, prospective, controlled clinical study (2013) Schweiz Monatsschr Zahnmed., 123, pp. 532-544Silva-Senem, M.X., Heller, D., Varela, V.M., Torres, M.C., Feres-Filho, E.J., Colombo, A.P., Clinical and microbiological effects of systemic antimicrobials combined to an anti-infective mechanical debridement for the management of aggressive periodontitis: a 12-month randomized controlled trial (2013) J Clin Periodontol., 40, pp. 242-251Zandbergen, D., Slot, D.E., Cobb, C.M., Van der Weijden, F.A., The clinical effect of scaling and root planing and the concomitant administration of systemic amoxicillin and metronidazole: a systematic review (2013) J Periodontol., 84, pp. 332-351Haas, A.N., De Castro, G.D., Moreno, T., Susin, C., Albandar, J.M., Oppermann, R.V., Azithromycin as an adjunctive treatment of aggressive periodontitis: 12-months randomized clinical trial (2008) J Clin Periodontol., 35, pp. 696-704Sampaio, E., Rocha, M., Figueiredo, L.C., Faveri, M., Duarte, P.M., Gomes Lira, E.A., Clinical and microbiological effects of azithromycin in the treatment of generalized chronic periodontitis: a randomized placebo-controlled clinical trial (2011) J Clin Periodontol., 38, pp. 838-846Han, B., Emingil, G., Ozdemir, G., Tervahartiala, T., Vural, C., Atilla, G., Azithromycin as an adjunctive treatment of generalized severe chronic periodontitis: clinical, microbiological and biochemical parameters (2012) J Periodontol., 83, pp. 1480-1491Sigusch, B., Beier, M., Klinger, G., Pfister, W., Glockmann, E., A 2-step nonsurgical procedure and systemic antibiotics in the treatment of rapidly progressive periodontitis (2001) J Periodontol., 72, pp. 275-283Pradeep, A.R., Kathariya, R., Clarithromycin, as an adjunct to non-surgical periodontal therapy for chronic periodontitis: A double blinded, placebo controlled, randomized clinical trial (2011) Arch Oral Biol., 56, pp. 1112-1119Cionca, N., Giannopoulou, C., Ugolotti, G., Mombelli, A., Microbiologic testing and outcomes of full-mouth scaling and root planing with or without amoxicillin/metronidazole in chronic periodontitis (2010) J Periodontol., 81, pp. 15-23Colombo, A.P., Teles, R.P., Torres, M.C., Rosalem, W., Mendes, M.C., Souto, R.M., Effects of non-surgical mechanical therapy on the subgingival microbiota of Brazilians with untreated chronic periodontitis: 9-month results (2005) J Periodontol., 76, pp. 778-784Marsh, P.D., Dental plaque: biological significance of a biofilm and community lifestyle (2005) J Clin Periodontol., 32, pp. 7-15Feres, M., Haffajee, A.D., Allard, K., Som, S., Goodson, S., Socransky, S.S., Antibiotic resistance of subgingival species during and after antibiotic therapy (2002) J Clin Periodontol., 29, pp. 724-735Goossens, H., Causal link confirmed between antibiotic use and resistance (2007) Lancet., 369, pp. 482-90Ardila, C.M., Granada, M.I., Guzmán, I.C., Antibiotic resistance of subgingival species in chronic periodontitis patients (2010) J Periodontal Res., 45, pp. 557-563Casati, M.Z., Nociti Junior, F.H., Sallum, E.A., Toledo, S., Sallum, A.W., Evaluation of using antimicrobial agents in the therapy of periodontal diseases (1996) Periodontics., 5, pp. 335-340Herrera, D., Roldan, S., Sanz, M., The periodontal abscess: a review (2000) J Clin Periodontol., 27, pp. 377-386Lypka, M., Hammoudeh, J., Dentoalveolar infections (2011) Oral Maxillofac Surg Clin North Am., 23, pp. 415-424Herrera, D., Roldan, S., O'Connor, A., Sanz, M., The periodontal abscess (II). Short term clinical and microbiological efficacy of 2 systemic antibiotic regimes (2000) J ClinPeriodontol., 27, pp. 395-404Bermejo-Fenoll, A., Sánchez-Pérez, A., Necrotising periodontal diseases (2004) Med Oral Patol Oral Cir Bucal, 9 (SUPPL.), pp. 114-9. , 108-114Haffajee, A.D., Torresyap, G., Socransky, S.S., Clinical changes following four different periodontal therapies for the treatment of chronic periodontitis: 1 year results (2007) J Clin Periodontol., 34, pp. 243-253Albandar, J.M., Adjunctive antibiotics with nonsurgical periodontal therapy improve the clinical outcome of chronic periodontitis in current smokers (2012) J Evid Based Dent Pract., 12, pp. 63-66Mascarenhas, P., Gapski, R., Al-Shammari, K., Hill, R., Soehren, S., Fenno, J.C., Clinical response of azithromycin as an adjunct to non-surgical periodontal therapy in smokers (2005) J Periodontol., 76, pp. 426-436Angaji, M., Gelskey, S., Nogueira-Filho, G., Brothwell, D., A systematic review of clinical efficacy of adjunctive antibiotics in the treatment of smokers with periodontitis (2010) J Periodontol., 81, pp. 1518-1528Herrera, D., Alonso, B., Leon, R., Roldan, S., Sanz, M., Antimicrobial therapy in periodontitis: the use of systemic antimicrobials against the subgingival biofilm (2008) J Clin Periodontol., 35, pp. 45-66Powell, C.A., Mealey, B.L., Deas, D., McDonnell, H.T., Mortiz, A.J., Post-surgical infections: prevalence associated with various periodontal surgical procedures (2005) J Periodontol., 76, pp. 329-333Wilson, W., Taubert, K.A., Gewitz, M., Lockhart, P.B., Baddour, L.M., Levison, M., Prevention of infective endocarditis: guidelines from the American Heart Association (2007) J Am Dent Assoc, 138, pp. 739-745. , A guideline from the American Heart Association Rheumatic Fever, Endocarditis and Kawasaki Disease Committee, Council on Cardiovascular Disease in the Young, and the Council on Clinical Cardiology, Council on Cardiovascular Surgery and Anesthesia, and the Quality of Care and Outcomes Research Interdisciplinary Working Group.747-760Slots, J., Low-cost periodontal therapy (2012) Periodontol. 2000, 60, pp. 110-13

Balanços energéticos agropecuários: uma importante ferramenta como indicativo de sustentabilidade de agroecossistemas.

No Brasil, pouca atenção se tem dado às formas e caminhos com que os fluxos energéticos se distribuem nos sistemas produtivos. Na agropecuária, a atenção tem sido voltada a novas fontes de energia (biomassa) ou em tecnologia alternativa, visando a racionalização do uso de energia fóssil ou elétrica. Entretanto, a agricultura tem se desenvolvido baseada fortemente na utilização intensiva de máquinas agrícolas, com conseqüente uso de combustíveis fósseis. Um fator de estrangulamento muito forte no consumo energético geral tem sido a utilização massiva de fertilizantes derivados do petróleo nos agroecossistemas. Estudos de Balanços Energéticos visam determinar os pontos de estrangulamento energético fundamentando a busca por tecnologias poupadoras de energia, especialmente aquelas de origem fóssil (combustível, fertilizante, agrotóxicos, energia despendida na fabricação das máquinas e implementos, etc.). No Brasil, a Região Sul, é onde se encontram vários trabalhos buscando uma agricultura mais auto-sustentável, do ponto de vista da utilização da energia. Em vista da possibilidade de eventuais futuras crises energéticas, o presente trabalho procura analisar o estado-da-arte dos estudos em Balanço Energético, no Brasil e no Mundo, como uma ferramenta de indicação da sustentabilidade dos sistemas agropecuários

Exact Hypersurface-Homogeneous Solutions in Cosmology and Astrophysics

A framework is introduced which explains the existence and similarities of most exact solutions of the Einstein equations with a wide range of sources for the class of hypersurface-homogeneous spacetimes which admit a Hamiltonian formulation. This class includes the spatially homogeneous cosmological models and the astrophysically interesting static spherically symmetric models as well as the stationary cylindrically symmetric models. The framework involves methods for finding and exploiting hidden symmetries and invariant submanifolds of the Hamiltonian formulation of the field equations. It unifies, simplifies and extends most known work on hypersurface-homogeneous exact solutions. It is shown that the same framework is also relevant to gravitational theories with a similar structure, like Brans-Dicke or higher-dimensional theories.Comment: 41 pages, REVTEX/LaTeX 2.09 file (don't use LaTeX2e !!!) Accepted for publication in Phys. Rev.