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Search Results: 1 - 10 of 616938 matches for " E.G.M.; "
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Caracteriza??o de rizóbios (Bradyrhizobium japonicum) e produtividade da soja
Scientia Agricola , 1998, DOI: 10.1590/S0103-90161998000300003
Abstract: a field study on the competion and on the dynamics of occupation of nodulation sites by naturalized and seed inoculated strains of bradyrhizobium japonicum was conducted on a dark red latosol. the experimental design consisted of randomized blocks, with eight replications of the following treatments: a) control without inoculation; b) control without inoculation, with nitrogen fertilizer; c) inoculation with about 107 rhizobia/g (8g/kg of seed); d) inoculation with about 1010 rhizobia/g (8g/kg of seed). the inoculant was prepared with the strains sms-314 (= semia-587) and sms-463 (=semia-5019 = 29w), officially recommended for inoculant production. the identification of the strains which formed nodules was made in samples collected at 10, 42 and 70 days after seed germination. the grains were harvested to evaluate production and nitrogen content. sorological typification was made with antiserum prepared from antigens constituted by b. japonicum strains semia-587, semia-5019 and semia-5052 (=usda-6), using the immunodot method. the characterization of the strains in nodules revealed a small increase (6,2 to 8,7%) in the occurrence of nodules formed by the recommended strains for the three sampling dates. there was an expressive participation of the strain 5052 (serogroup usda-6) in the formation of the nodules. it was also observed that the naturalized strains may contribute differently to the formation of the nodules during the cycle, depending on the time of sampling.
Caracteriza o de rizóbios (Bradyrhizobium japonicum) e produtividade da soja
Scientia Agricola , 1998,
Abstract: Fez-se um estudo de campo sobre a competi o e a dinamica de ocupa o de sítios de nodula o de estirpes de Bradyrhizobium japonicum naturalizadas ou inoculadas em sementes. O ensaio foi instalado em Latossolo Vermelho Escuro utilizando blocos ao acaso, com 8 repeti es dos seguintes tratamentos: A) controle sem inoculante; B) controle sem inoculante, com aduba o nitrogenada; C) inoculante com cerca de 107 rizóbios/g (8g/kg de semente); D) inocula o com cerca de 1010 rizóbios/g (8g/kg de semente). Os inoculantes foram preparados com as estirpes recomendadas na ocasi o, SMS - 314 (= SEMIA 587) e SMS - 463 (= SEMIA 5019 = 29W). A identifica o das estirpes formadoras dos nódulos foi realizada em amostras coletadas aos 10, 42 e 70 dias após a germina o. Realizou-se também a colheita dos gr os para avalia o da produ o e de N-total. A tipifica o sorológica foi feita com antissoro preparado a partir de antígenos constituídos pelas seguintes estirpes de Bradyrhizobium japonicum: SEMIA 587, SEMIA 5019 e SEMIA 5052 (= USDA 6), utilizando-se da técnica "immunodot". A caracteriza o das estirpes dos nódulos revelou um pequeno aumento (6,2 a 8,7%), na ocorrência de nódulos formados pelas estirpes recomendadas, nas três épocas de amostragem. Houve expressiva participa o da estirpe 5052 (= sorogrupo USDA 6) na forma o dos nódulos. Verificou-se que as estirpes naturalizadas podem contribuir de forma diferente na forma o dos nódulos durante o ciclo, dependendo da amostragem.
Effects of xylazine on acid-base balance and arterial blood-gas tensions in goats under different environmental temperature and humidity conditions
E.G.M. Mogoa,G.F. Stegmann,A.J. Guthrie
Journal of the South African Veterinary Association , 2012, DOI: 10.4102/jsava.v71i4.720
Abstract: The effects of acute exposure to 3 different temperature and humidity conditions on arterial blood-gas and acid-base balance in goats were investigated after intravenous bolus administration of xylazine at a dose of 0.1 mg/kg. Significant (P < 0.05) changes in the variables occurred under all 3 environmental conditions. Decreases in pH, partial pressure of oxygen and oxyhaemoglobin saturation were observed, and the minimum values for oxygen tension and oxyhaemoglobin saturation were observed within 5 min of xylazine administration. The pH decreased to its minimum values between 5 and 15 min. Thereafter, the variables started to return towards baseline, but did not reach baseline values at the end of the 60 min observation period. Increases in the partial pressure of carbon dioxide, total carbon dioxide content, bicarbonate ion concentration, and the actual base excess were observed. The maximum increase in the carbon dioxide tension occurred within 5 min of xylazine administration. The increase in the actual base excess only became significant after 30 min in all 3 environments, and maximal increases were observed at 60 min. There were no significant differences between the variables in the 3 different environments. It was concluded that intravenous xylazine administration in goats resulted in significant changes in arterial blood-gas and acid-base balance that were associated with hypoxaemia and respiratory acidosis, followed by metabolic alkalosis that continued for the duration of the observation period. Acute exposure to different environmental temperature and humidity conditions after xylazine administration did not influence the changes in arterial blood-gas and acid-base balance.
Clinical, cardiopulmonary and haemocytological effects of xylazine in goats after acute exposure to different environmental temperature and humidity conditions
E.G.M. Mogoa,G.F. Stegmann,A.J. Guthrie,G.E. Swan
Journal of the South African Veterinary Association , 2012, DOI: 10.4102/jsava.v71i3.705
Abstract: This study was carried out to assess the influence of xylazine administration on clinical, cardiopulmonary and haemocytological variables after acute exposure to different environmental conditions. Xylazine hydrochloride was administered intravenously at 0.1 mg/kg body mass to 6 clinically healthy, castrated male goats. All animals were exposed for 60 min to 3 sets of climatic conditions: 14 °C, 33% relative humidity; 24 °C, 55% RH, and 34 °C, 65% RH. The variables that were measured for a period of 60 min after xylazine administration were sedation, analgesia, salivation, urination, ventilation rate, heart-rate, mean arterial blood pressure, oesophageal temperature, haematocrit, mean corpuscular volume and mean corpuscular haemoglobin concentration. Xylazine induced sedation, analgesia, salivation and urination independently of the 3 environmental conditions. Environment had no influence on the onset, duration and recovery from sedation. In the 14 °C environment, xylazine resulted in a significant decrease in ventilation and heart-rate from baseline values. Significant changes in mean arterial blood pressure, haemoglobin concentration, mean corpuscular volume, haematocrit and red cell count were observed in the 3 environments. Total plasma protein was significantly altered at 24 °C and 34 °C. Acute exposure of goats to different environmental conditions had no significant influence on the clinical, cardiopulmonary and haemocytological variables. Physiological changes induced by xylazine were therefore independent of the environment.
Obtention rheocast structure for Al-4.5wt%Cu alloy: comparison ultrarefining and electromagnetic stirring
M. Paes,E.G. Santos,E.J. Zoqui
Journal of Achievements in Materials and Manufacturing Engineering , 2006,
Abstract: Purpose: the present work analyses the mechanisms involved in the formation of the rheocast (globular)structure for the Al-4.5wt%Cu alloy, produced by electro-magnetic stirring (EMS) of the liquid duringsolidification, under the following basic conditions: pouring temperatures of 750 and 800 C with and withoutaddition of a grain refiner. The objective is to directly compare between the electro - magnetic stirring and ultra- refining as methods of obtaining rheocast materials, as well as to verify the possibility of using these methodstogether. The general purpose is to develop a new Aluminum-Copper based alloy for thixoforming.Design/methodology/approach: the experimental apparatus was made of a wrapped metallic ingot mouldsurrounded by a sequence of induction coils and a power source that generated an estimated power ofelectromagnetic field with 1200Watts, which was enough for a fixed amount of 1kg of moulting metal). Themacro and microstructures ingots obtained had the characterized by optical microscopy to measure the grainsize, globular size and the roundness of the globular structures (to verify the efficiency of the globularization).Findings: In the present paper the combination of electromagnetic stirring, lower pouring temperature and grainrefiner addition proved to be the best way to produce Al-5.5wt%Cu rheocast alloy.Research limitations/implications: the principal objective is to compare electro-magnetic stirring and ultrarefiningto determine the better structure (level of globularization), determining the factor of larger influence:the grain refiner or the electro-magnetic induced field.Originality/value: Aluminum-Copper alloys specially designed for semi-solid applications are a new area in thesemi-solid field, and this paper presents in primary hand the results for the AA 2xxx series.
Gender Issues in Entrepreneurial Development in Benue State (Nigeria) and Counceling Implications
E.G. Egbe-Okpende,M.M. Orhungur
Bulgarian Journal of Science and Education Policy , 2012,
Abstract: This paper investigates the impact of counselling on gender issues in entrepreneurial development in Benue State (Nigeria). Feminine or women constitute about 50 % of the population in Nigeria, and they make up 45% of the 70% unemployed population. In Benue State, there is low industrial and entrepreneurial skills development, so poverty and under-employment of the feminine gender is endemic. Hence, gender issues as relates to "the forgotten 50% of the world’s population" or as the forgotten factor in economic development was studied using a random sample of fifty working class women. The study examines how this problem can be addressed through counselling. The descriptive survey design was used with one main research question guiding the study. The data was analysed using percentages. The re-sults of the study revealed that forty (80%) of the respondents with entrepreneurship development were influenced through education and counseling. Change in attitude of women as a result of education and their role in national development was investigated, and recommendations made on how to help women to fulfil their role by bridging the gender gap.
Weil's disease: an unusually fulminant presentation characterized by pulmonary hemorrhage and shock
Spichler, A.;Moock, M;Chapola, E.G.;Vinetz, J.;
Brazilian Journal of Infectious Diseases , 2005, DOI: 10.1590/S1413-86702005000400011
Abstract: a case of fulminant leptospirosis is presented, manifesting as rapid progression from acute undifferentiated febrile illness to refractory shock, jaundice, renal failure and massive pulmonary hemorrhage. the patient received aggressive intensive care unit support including prolonged intubation and ventilation. this case emphasizes that acute leptospirosis may well not be characterized by the classic scenario of a biphasic illness, but rather by a fulminant, monophasic illness.
Management of Onion Leaf Blight by Alternaria alternata (FR.) Keissler by Botanicals and Bio-control Agents
R. Ramjegathesh,E.G. Ebenezar,M. Muthusamy
Plant Pathology Journal , 2011,
Abstract: Field experiment was carried out to assess the efficacy of plant oils, plant extracts and antagonistic microorganisms against leaf blight disease of onion caused by Alternaria alternata. Two sprays of neem oil (3%) given on onion plants at the first appearance of the disease and the second on 15 days later recorded significantly the lowest percent disease index (22.22%) and besides increasing the yield. In plant extracts Acorus calamus rhizome extract 10% was significantly reduced the disease incidence (34.78%) followed by Mentha arvensis leaf extract.
Supplementary Livelihood Strategies among Workers in Nigeria: Implications for Organizational Growth and Effectiveness
International Journal of Business and Management , 2010, DOI: 10.5539/ijbm.v5n3p146
Abstract: This paper examines the impact of supplementary livelihood strategies among workers on organizational growth and effectiveness in Nigeria. 320 staff from University of Calabar, Calabar was randomly and purposively selected for the study. Data was gathered through questionnaires. Five hypotheses were postulated and tested using chi-square, independent t-test, z-test and spearsman’s rho correlation. Findings revealed that educational qualification, income and household size influenced workers engagement in supplementary livelihood. The study also revealed that, there is a significant difference between male and female in the engagement on supplementary livelihood. The research further revealed that, workers engagement in supplementary livelihood affects organizational growth and effectiveness. It was recommended among others, that management should pay salaries as at when due and make policies that promote good condition of services.
New Electrocatalysts for Electro-Oxidation of Methanol Prepared by B?nnemann′s Method
Neto,A. Oliveira; Franco,E.G.; Aricó,E.; Linardi,M.;
Portugaliae Electrochimica Acta , 2004,
Abstract: pt-ru/c, pt-dy and pt-ru-mo/c electrocatalysts prepared by b?nnemann′s method have been studied as porous thin films on high surface area carbon electrodes, in order to evaluate their electroactivity on co desorption in pem fuel cells. for comparison electrode precursor powders with and without thermal treatment were considered. cyclic voltammetry showed that addition of mo in the well-established pt/ru system is very promising for methanol oxidation. in order to compare the electroactivity of different catalysts a normalization procedure based on the amount of pt was used.
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