Potassium nutrition in the first and second ratoon sugarcane grown in an Oxisol by a conservationist system

The presence of mulch on the soil surface after the mechanical harvesting of sugarcane (Saccharum officinarum L.) enhances the cycling of nutrients, especially K, which can decrease K fertilizer recommendations for the crop. The aim of this study was to evaluate the effect of K addition to an Oxisol, with an initial concentration 0.07 cmol(c) K kg(-1), in first and second ratoon (no-till) sugarcane cultures by a conservationist system, i.e. rational use of fertilizers, use of alternative inputs and especially the maintenance of residues in soil that was previously burned to facilitate cutting. The following K doses were tested: 0, 32.5, 65, 130, and 195 kg K2O ha(-1), arranged in a randomized block design with five replicates. Potassium content in the soil and in the plant, as well as the yield and the quality of stalks were evaluated. Soil K application increased K concentration in soil and plant, and was reflected in the prodUction of stalks, with higher production (87.5 and 107.5 t ha(-1)) with the use of 120 and 123 kg K2O ha(-1) in first and second ratoon sugarcane, respectively. At the first 2 yr it was not possible to reduce the K fertilization in ratoon. Therefore, with the introduction of the conservationist system there was an increase (20 t ha(-1)) at the second ratoon regarding the first one with the same applied rate.

Thermal Characteristics of Lignin Residue from Industrial Processes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Short-term effects of fire on small rodents in the Brazilian Cerrado and their relation with feeding habits

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

Emissão de gases de efeito estufa nos sistemas de colheita crua e queimada no estado de São Paulo, Brasil

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Efeitos do fogo sobre comunidades de aves no Pantanal Mato-Grossense

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação do desempenho operacional e de custos entre enfardadoras no recolhimento de palhiço de cana-de-açúcar

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Soil and biomass mercury emissions during a prescribed fire in the Amazonian rain forest

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

Fire and the reproductive phenology of endangered Madagascar sclerophyllous tapia woodlands

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Does fire induce flowering in Brazilian subtropical grasslands?

QuestionsWe aimed to analyse the effect of fire on flowering in subtropical grasslands, by addressing the following questions: will fire history affect flowering? If yes, do fire feedbacks influence flowering or is it just the removal of above-ground biomass? Are there differences in burned and mowed plots?LocationSubtropical grasslands in Southern Brazil (30 degrees 03S, 51 degrees 07W).MethodsWe established plots in areas with different fire histories: 30d (30 plots: five replicates), 1yr (14 replicates), 3yr (30 plots: five replicates) since the last fire, in experimentally burned and mowed plots (14 replicates each). We counted the number of flowering species, as well as the number of flowering stalks.ResultsGraminoid species flowered in highest numbers 1yr after fire, whilst forbs had more species flowering just after fire, indicating different reproductive strategies in post-fire environments. Mowing was not as efficient as fire in stimulating flowering. Finally, the different functional groups showed different flowering responses to time since last fire and to the different types of management.ConclusionsOur results show fire stimulated flowering. Although mowing can be a good alternative for maintaining plant diversity, our study showed that this practice is not as efficient as fire in stimulating flowering. However, fire season should be noted as a limiting factor to the recovery of C-3 grasses in these subtropical grasslands, and annual burns may be harmful to C-4 grasses, since they delay their flowering to the next post-fire growing season.

Recursos humanos e materiais na assistência de enfermagem a pacientes de uma unidade de tratamento de queimaduras

The burn is among the leading causes of morbidity and mortality in our society. It shows a great complexity and is hard to treat. Beyond the physical suffering, the burned patient is affected by psychological distress, requiring a high level of knowledge for assistance planning. The Professional Practice Law No. 7498 establishes the nurse as in charge of the client, as leader of the nursing team and as responsable for the management of physical and human resources. The nurse has autonomy to design the quantitative and qualitative picture of the nursing staff and should use the methodologies for their suitability to the real levels of assistance needed. Material resources represent 15 to 25% of total expenditures at health organizations. Therefore, to maintain the care level, nurses must determine the needs, considering the quantitative, qualitative and financial aspects. The study aimed the survey of the human and material resources necessary for nursing care to patients in a Burns Treatment Unit and identify its epidemiological profile and its nursing diagnoses. We collected the data from medical records of hospitalized between July and August, and the nursing diagnoses were classified through the Taxonomy II proposed by the North American Nursing Diagnosis Association (NANDA). The design of the picture of nurses followed the parameters of COFEN Resolution nº 293/2004. We apply the Fugulin's Patients Classification System to establish levels of the required care. The institution's Cost Center provided a spreadsheet with the purchased items, subsequently classified into ABC. Most hospitalized patients were men, aged between 20 and 50. There was a predominance of patiences with minor burned and the most common type of burn was due to fire. The average residence time was 28.71 days, and 88% of the patients were discharged... (Complete abstract click electronic access below)

Amostragem de poluentes particulados emitidos pela queima de biomassa em correntes confinadas

It is clear today the ever-accelerating search for new fuels that will eventually replace those that will survive in our society, which are fossil fuels. For this reason, a fuel used since the dawn of humanity and much studied since then, considered the generator of clean, renewable energy, can earn more and more space in the power generation sector, which is biomass. We performed two experiments with two different types of biomass, one from the Amazon rainforest and other pine and eucalyptus as waste from the sawmill UNESP Itapeva. In the first experiment, conducted at the Laboratory of Combustion and Propulsion INPE Cachoeira Paulista were conducted three tests in a chimney with a fan creating forced ventilation, where the biomass was burned and deposited on a support beneath the hood. In the second experiment was conducted to analyze the emission of particulate matter using biomass (waste) from the sawmill on the campus of UNESP experimental Itapeva the burning of it in a burner for heating water for a wood oven. In these experiments we used a particle called DATARAM4 sampler that is capable of sampling both outdoors and inside of pipelines, which is the focus of this work. With this equipment it was possible to measure the concentration of particulate matter in all the firings as above, and compare them to levels acceptable in the current law, always trying to analyze the so-called fine particles, which are those with diameters less than 2.5 μm. Using data obtained from the equipment was also possible to evaluate the diametral distribution of particulate matter in question, and verify which phases of the flares in the concentration and the diameters of the particles are the most critical. In this work we concluded that in all firings conducted concentrations of particulate matter were higher than that allowed by the law, and the diameters were found that are more harmful to human health

Perfil epidemiológico dos pacientes internados na unidade de tratamento de queimaduras do Hospital Estadual de Bauru

Burns are frequent accidents, and they are among the major causes of morbidity and mortality in our society. In Brazil, statistical data on such lesions are relatively scarce, and they are concentrated in a few treatment centers. Data on such accidents allow for specific care to be timely and properly taken in order to provide patients with a better prognosis, in addition to enabling the development of prevention programs as well as fire-prevention safety laws. To characterize the epidemiological profile of users at the Burn Treatment Unit of Bauru State Hospital. Collection of epidemiological data through the e-pront system and from charts of burned inpatients from April 2005 to April 2010. During the studied period, 906 hospitalizations of burned patients occurred, with an annual average of 181.2 individuals. Their mean age was 28.4 years, with a predominance of males. The mean hospitalization period was of 27.6 days, with a median of 16 days and a maximum of 216 days; 14.7% developed to death, with the highest mortality rate in the first two weeks of hospitalization. Second-degree burns were the most frequent; 36.8% of the patients burned less than 10% of their body surface, and there was a gradual frequency reduction when a larger burned surface was taken into account; the greater the affected areas, the higher the number of deaths; 91% resulted from thermal agents, 6% from electric and 2% from chemical agents; scalding was the major cause among all agents, followed by alcohol associated with fire and direct flame. The major area affected areas were the upper limbs. The study shows the need for educational and preventive measures, particularly for the young adult population, by means of educational programs and prevention campaigns

Uso de algoritmos genéticos na otimização do sistema de coleta do palhiço de cana-de-açúcar

The Brazilian government has convinced the world that ethanol deriving from sugar cane is a promissory means of sustainable fuel for vehicles. There is a great growth of ex vehicles , i.e, run both by ethanol and gasoline, due to competent automotive industries and e cient alcohol production technology. In 2009 and 2010 the ethanol production was 25.7 billion liters and 53.8% of sugar cane production was destined to alcohol production. Nevertheless, the sugar production also derived from sugar cane should increase in 2011. Brazil produced 33 million tons of sugar in the last harvest. With sugar cane on the rise production is arising new environmental problems. The harvest using mechanized cut besides improving the logistic transportation system leaves the generating residue in the eld. This residue is a mixture of straw, leavings and scrap of sugar cane named sugar cane crop residue and corresponds to 30% of biomass and can be burned and produce electricity by cogeneration. But the transport the sugar cane crop from the eld is expensive due costs involved in the transport system. This work aims to propose a formulation for the bales collecting problem from sugar cane eld to mill that minimize the costs involved in the transport system. The computational tests use the C++ language and an algorithm based on genetic algorithms techniques

Produção de hidrogênio por reforma a vapor de biogás

A new approach to generating clean energy has been studied by several researchers, among which one can highlight the steam reforming of biogas. The Biogas is result of decomposition of organic matter and it hasn’t been availed in the global level, instead, the biogas has been burned in flare or discarded into the atmosphere providing damage to the environment. The generation of vector biogas energy can be realized through its steam reforming and this work examines briefly the types of digesters used for biogas generation, studying the process of steam reforming to generate hydrogen as energy vector, analyzing each step in detail, seeking to adapt its main features an ethanol reformer for a biogas reformer. Besides this it is estimated the yield of the reform process and the boiler efficiency for efficiency of the process

Assessment of fungi in soils of sugarcane crops and their potential for production of biomass-degrading enzymes

Soil management practices are konwn to affect the biomass and enzyme activities of microbial soil communities. To assess whether burning of sugarcane prior to harvesting affects the community of soilborne fungi, we collected soil simples in two sites: burned sugarcane culture prior harvesting (BS) and non-burned sugarcane culture (NBS). A total of 75 filamentous fungal isolates were recovered from soils in both sites. Trichoderma was the most prevalent genus in both sites, followed by Fusarium, Cunninghamella and Aspergillus. The Sorensen's index (0.60) suggested a slight difference in fungi associated with both areas, with high number of fungal isolates found on BB soil. The abundance of Trichoderma isolates in NBS soil was higher than BS soil; however, the abundance of Fusarium, Aspergillus and Cunninghamella was higher in the latter type of soil. In addition, fungi isolated from BS soil showed the highest production of xylanase and laccase in comparision with fungi isolated form NBS soil. Our results indicate that the different types of sugarcane harvesting apparently did not interfere with the diversity of fungal communnities as revealed by culture-dependent methods. In addition, our data indicates the potencial of fungi from soils of sugarcane crops to produce relevant enzymes related to biomass conversion.