Governança e pensamento estratégico: uma crítica a Michael Porter

No presente trabalho, o autor procura analisar, ou mais exatamente desconstruir, a essência do pensamento dito de “estratégia” e de governança das organizações, atualmente dominante na cena acadêmica da administração. Servindo-se de uma leitura tanto histórica, heurística, como epistemológica e metodológica da obra e do sistema dominantes no assunto, denominado por ele “porterismo”, o autor faz um balanço crítico do conjunto de teorias da “estratégia” gerencial em geral e daquela do autor mais considerado no assunto: Michael Porter.

Tityus stigmurus (Thorell, 1876) (Scorpiones; Buthidae): response to chemical control and understanding of scorpionism among the population

In this study, the events following application of the insecticideDemand 2.5 concentrated solution (CS) in the field, to control Tityus stigmurus, were investigated. Data on attitudes and practices relating to scorpionism were collected using a questionnaire. During the months of May to July 2005, 69 premises were monitored on different days following insecticide treatment, focusing on scorpion frequency and mortality. According to the results, 42% of the premises showed scorpion incidence, with an average of three specimens per house. The highest incidence was recorded during the first week following the treatment. Only 7% of the specimens were found dead. Most (72%) of the population showed knowledge about prevention and control measures. Despite this, 100% of the premises presented breeding sites, mainly in debris (79.7%). These results indicate that the scorpion control method used by health agents during this investigation was not efficient, and the results suggest that the method may have had a dispersive effect on these animals.

Two new species of Elaphropeza Macquart, 1827 (Diptera, Hybotidae, Tachydromiinae) from Bolivia, Brazil and Peru

Two new species of Elaphropeza Macquart, 1827 are described and illustrated: Elaphropeza atrata sp. nov. (Brazil and Peru) and Elaphropeza longiseta sp. nov. (Bolivia and Brazil). An updated key to Elaphropeza species from Amazon Basin is provided. The number of species of Elaphropeza in the Amazon Basin region is increased to seven with an increase to 36 for the Neotropical Region.

Biologia do bicho do cesto Oiketicus kirbyi (Lands.-Guilding, 1827) (Lepidoptera, Psychidae) em folhas de Eucalyptus spp

O bicho do cesto, Oiketicus kirbyi (Lands.-Guilding, 1827), inseto extremamente polífago, é praga de várias culturas de importância econômica, principalmente na região sul do Brasil. Sua ocorrência em áreas reflorestadas com eucalipto é freqüente, embora não tenha causado, ainda, danos econômicos de monta. Este trabalho trata da biologia deste inseto em folhas de Eucalyptus spp., com a finalidade de trazer subsídios para o caso de eventuais surtos de O. kirbyi em florestas implantadas. O bicho do cesto foi criado em laboratório em temperatura de 25±3°C, umidade relativa de 70± 10% e fotofase de 13 h. Os seguintes valores médios foram obtidos: período embrionário de 43,1 dias, período larval de 140 dias (machos) e 151 dias (fêmeas), período pupal de 38,2 dias (machos), longevidade dos adultos de 3,0 dias (machos) e 3,9 dias (fêmeas) e período de oviposição 2,1 dias. Foram determinadas, também, as dimensões de ovos, pupas, adultos e das cápsulas cefálicas, o número de ínstares larvais, período de cópula, além da estimativa do dano foliar.

Contribuição ao conhecimento da morfologia de Oxyagrion Terminale Selys, 1876 com um estudo sobre a genitália externa (Odonata, Zygoptera, Coenagrionidae)

Foi feita uma análise minuciosa da morfologia externa de Oxyagrion terminale Selys, 1876, onde foram interpretadas as principais estruturas da cabeça, tórax, patas, asas e abdômen vistos de vários ângulos, dando especial atenção ao estudo da genitália de ambos os sexos, em microscopia ótica e eletrônica de varredura.

Observations on the morphology of Pomacea lineata (Spix, 1827) (Mollusca, Ampullariidae)

This paper deals with the morpholgy of Pomacea lineata (Spix, 1827) collected at its type locality. The shell is globose, moderately heavy, horn-colored with brown spiral bands; apex subelevated; 4 - 5 rounded whorls increasing in diameter rather rapidly, separated by deep suture. Aperture large and ovoid; outer lip sharp; umbilicus narrow and deep; operculum concentric, corneous. Ratios: shell width/shell length = 0.74 - 0.83 (mean 0.78); spire length/shell length = 0.10 - 0.18 (mean 0.13); aperture length/shell length = 0.70 - 0.77 (mean 0.73). The animal is longisiphonate. Renal organ brownish with marked invagination at its right edge. Ureter elongated with its long axis transverse to the main axis of the kidney. The radula is taenioglossate (2.1.1.1.2) and has on average 35 transverse rows of teeth. The form and arrangement of the radula teeth are nearly the same as in other Ampullariidae. The testis is cream-colored and lies in the first three whorls of the spire. Spermiduct uniformly narrow, running to the base of the spire. Seminal vesicle whitish, slightly pressed dorsoventrally. Prostate cylindric and thick, similar in color to the testis. Penis whiplike, with a closed circular spermiduct. Penis pouch ovoid completely envelping the penis. Penis sheath elongated, broad prosimally, tapering distally. Its inner surface shows a longitudinal channel along its proximal half and two glands, one on the middle and the other apical. Ovary composed of branched whitish tubules situated on the surface of the digestive gland. Oviduct slender running along the columellar axis toward the base of the spire. Seminal receptalble tubiform, thick-walled and rounded proximally. Albumen gland large, pink, enclosing the receptacle and the spiral capsule gland. Vestigial male copulatory apparatus (penis and its sheath) present in all females examined.

Padrões distributivos e zoogeografia dos moluscos da plataforma continental brasileira: Parte III. Comissão Oceanográfica Espiríto Santo I

One hundred senventy-five species of marine mollusks have been identified in the Expedition Espírito Santo I. Standing out the species Margarites olivaceus (Brown, 1827); Cyclostremiscus caraboboensis Weishord, 1962; Balcis gibba Folin, 1867; Triphora compsa (Dall, 1927); Henrya af. goldmani Bartsh, 1947 and Limaea subovata Jeffreys, 1876 as they have not been previously assigned to Brazil. The analysis of the geographical distribution patterns points out the dominance of the species with thermophiles affinities. This situation evidences the importance of the Brazilian Current in the maintanance of the biogeographical structure of the studied region. However, it is the analysis of the cryophiles species that shows the Cabo Frio region as an ecological filter quite more permeable to the species with thermophile affinities than to the cryophiles ones. The existence of this barrier and the endemism rate (4.27%) characterize the region that extends from the south of Cabo Frio as a transition between the two patterns cited above. Therefore they do not corroborate in malacological parameters the proposition made by Palacio (1982) for the individualization of the Paulista Province.

A new nematode species (Seuratoidea, Cucullanidae) parasitizing Parauchenipterus striatulus (Steindachner, 1876) (Pisces, Auchenipteridae) in Brazil

A new species of a cucullanid nematode is described, illustrated and compared with Cucullanus brevispiculus Moravec, Kohn & Fernandes, 1993 and C. rhamphichthydis Moravec, Kohn & Fernandes, 1997, two species previously reported as parasitizing freshwater fish in South America. The new species is characterized mainly by markedly short spicules, deirids and excretory pore situated posterior to the oesophago-intestinal junction, presence of strongly sclerotized plates in the oesophastome and oesophagus divided into two distinct portions.

Experimental evidence and ecological perspectives for the adaptation of Schistosoma mansoni Sambon, 1907 (Digenea: Schistosomatidae) to a wild host, the water-rat, Nectomys squamipes Brants, 1827 (Rodentia: Sigmodontinae)

Due to the semi aquatic habits and the overlap of the geographical distribution of the water-rat, Nectomys spp., with schistosomiasis endemic areas, these wild rodents are very likely to acquire Schistosoma mansoni infection in their daily activities. The role of the water-rat in the S. mansoni cycle would be substantiated if one could prove that these rodents acquire the parasite during their own activity time, a completely independent time schedule of human activities. To pursue this goal, we performed two field experiments in the municipality of Sumidouro, State of Rio de Janeiro, Brazil, a schistosomiasis endemic area where N. squamipes is found naturally infected. One experiment was devised as a series of observations of activity time of the water-rat. The other experiment was a test of the occurrence of late transmission of S. mansoni to the water-rat. The daily activity pattern showed that the water-rat is active chiefly just after sunset. At both diurnal and late exposition essays the water-rat sentinels got infected by S. mansoni. These findings clarify ecological and behavioral components necessary to the adaptation of S. mansoni to the water-rat as a non human definitive host and the existence of a transmission cycle involving this animals as a reservoir.

Aspectos mecanísticos da adição de Michael

The Michael addition reaction has been reported as a conventional nucleophilic process. However, more recently, alternative mechanisms involving electron transfer between acceptor and donnor species have been proposed.

Aspectos regio- e estereoquímicos da adição de Michael assimétrica via iminas quirais com centros estereogênicos pré-existentes

The asymmetric Michael addition reactions using chiral imines, under neutral conditions (deracemizing alkylation process), constitute one of the main methods for the stereocontrolled elaboration of quaternary carbon centers. This protocol is based on the conjugate addition of secondary chiral enamines to electron-deficient alkenes. The focus of this report deals with the discussion of regio- and stereochemical aspects of the deracemizing alkylation process concerning enamines bearing a resident chiral center.

Morfoanatomia do sistema caulinar de Canna edulis Kerr-Gawler (Cannaceae)

O objetivo deste trabalho foi estudar características morfológicas e anatômicas do sistema caulinar de Canna edulis. As observações morfoanatômicas, de crescimento das gemas e formação do sistema caulinar, foram efetuadas durante o ciclo vegetativo da planta. O sistema subterrâneo é formado por raízes adventícias fibrosas originadas a partir dos nós e entrenós dos rizomas. Esses órgãos orientam-se paralelamente à superfície do solo com padrão de ramificação simpodial. As gemas apicais dos rizomas diferenciam-se em caules reprodutivos, constituídos por nós e entrenós característicos. A base desse órgão é constituída por catafilos. O caule reprodutivo é formado por epiderme unisseriada e em posição subepidérmica, nota-se a presença de células com estrias de Caspary. Os rizomas adultos são constituídos por epiderme, córtex com endoderme evidente e cilindro vascular delimitado por periciclo plurisseriado. Embora as características morfológicas do sistema caulinar dessa planta concordem com as descrições recentes aplicadas aos rizóforos, o caule subterrâneo desta espécie foi interpretado como um rizoma.

La separación de los caminos (un análisis crítico del libro homónimo de Michael Friedman)

La filosofía contemporánea se hacaracterizadopor la presencia de un dualismo esquizoide entre la tradición analítica e la tradición fenomenológico hermenéutica. El origen histórico del mismo puede ser fijado en el Congreso de Davos, el cual, por otra parte, señala el comienzo del olvido de un otro programa, la filosofía de las formas simbólicas de E. Cassirer e que hoy puede ser considerado como alternativa e posible dirección de superación del dualismo mencionado. Tal es, en síntesis, la posición defendida por M. Friedman en su reciente monografía, escrita en el contexto de la convicción de una crisis derivada del agotamiento de las tradiciones y de la subsecuente necesidad de una reorientación. El texto que ofrecemos comenta críticamente el estudio de Friedman, mostrando donde y cómo él puede y debe ser completado o, eventualmente, corregido.