A Conflict Model for Strategists and Managers

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/67210/2/10.1177_000276427201500604.pd

Nitrogênio da biomassa microbiana em solo de Cerrado com aplicação de fertilizante nitrogenado.

O objetivo deste trabalho foi avaliar o efeito da adubação nitrogenada no nitrogênio da biomassa microbiana do solo (NBMS), em diferentes profundidades, em um Latossolo Vermelho-Amarelo cultivado com cevada. O experimento foi instalado em junho de 2004, em área experimental de primeiro ano de plantio direto, anteriormente cultivada com milheto por três anos e posteriormente com soja por duas safras. Foram utilizados os seguintes tratamentos: quatro doses de nitrogênio (30, 60, 90 e 120 kg ha-1) e o controle sem adubação nitrogenada. As amostras de solo foram coletadas em quatro profundidades: 0-5, 5-10, 10-20 e 20-30 cm, com três repetições e em três épocas: perfilhamento pleno, floração e logo após a colheita. O NBMS e a razão NBMS:Ntotal diminuíram com a profundidade. Doses mais elevadas de nitrogênio não aumentaram o NBMS. O Ntotal não foi alterado nas diferentes doses de nitrogênio, mas diminuiu com a profundidade. Houve correlação negativa entre o NBMS e o pH do solo em todas as doses de nitrogênio, com exceção na dose zero. Houve também, correlação positiva entre a razão NBMS:Ntotal e o NBMS, porém não entre a razão NBMS:Ntotal e o Ntotal.Made available in DSpace on 2011-04-09T12:40:14Z (GMT). No. of bitstreams: 1 42n03a14.pdf: 2062277 bytes, checksum: 0a72ef04c0247d581260452e698d491f (MD5) Previous issue date: 2008-01-04200

Breeding of Acrocomia aculeata using genetic diversity parameters and correlations to select accessions based on vegetative, phenological, and reproductive characteristics

Macaw palm (Acrocomia aculeata) is a promising species for use in biofuel production, and establishing breeding programs is important for the development of commercial plantations. The aim of the present study was to analyze genetic diversity, verify correlations between traits, estimate genetic parameters, and select different accessions of A. aculeata in the Macaw Palm Germplasm Bank located in Universidade Federal de Viçosa, to develop a breeding program for this species. Accessions were selected based on precocity (PREC), total spathe (TS), diameter at breast height (DBH), height of the first spathe (HFS), and canopy area (CA). The traits were evaluated in 52 accessions during the 2012/2013 season and analyzed by restricted estimation maximum likelihood/best linear unbiased predictor procedures. Genetic diversity resulted in the formation of four groups by Tocher's clustering method. The correlation analysis showed it was possible to have indirect and early selection for the traits PREC and DBH. Estimated genetic parameters strengthened the genetic variability verified by cluster analysis. Narrow-sense heritability was classified as moderate (PREC, TS, and CA) to high (HFS and DBH), resulting in strong genetic control of the traits and success in obtaining genetic gains by selection. Accuracy values were classified as moderate (PREC and CA) to high (TS, HFS, and DBH), reinforcing the success of the selection process. Selection of accessions for PREC, TS, and HFS by the rank-average method permits selection gains of over 100%, emphasizing the successful use of the accessions in breeding programs and obtaining superior genotypes for commercial plantations

Health Communication Theory and Research: An Overview of Health Organizations

This overview presents the point of view that health organizations are quite different from other organizations and, therefore, deserve to be studied as a context in their own right. An analytic framework is presented through which communication in health organizations can be studied. This framework entails a three-by-four factor matrix, where levels of communication (individual, interpersonal, group, and organizational) are associated with functions of communication (adaptation, coordination, and integration). Research and theory relevant to each cell within this framework is presented and discussed. Present limitations of this framework are reviewed and specific avenues of elaboration are suggested