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Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

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American Journal of Plant Sciences 2014年第25期5卷 3710-3716页

作者： Luiz Henrique Monteiro Fernandes Helbert Rezende de Oliveira Silveira Kamila Rezende Dázio de souza Mário Lúcio Vilela de Resende josé Donizeti Alves department of Plant Pathology Federal University of Lavras—UFLA Lavras Brazil Agricultural Reasearch Company of Minas Gerais—EPAMIG Campus of Federal University of Lavras—UFLA Lavras Brazil department of Biology Federal University of Lavras—UFLA Lavras Brazil

We investigated the effects of formulations based on phosphite products on gas exchange and activity of antioxidant enzymes in coffee plants. Seedlings of the Mundo Novo cultivar were submitted to various treatments composed of different formulations of with potassium phosphite (ADB 120), manganese phosphite (Reforce Mn), and fungicide (PrioriXtra®). For coffee seedlings, the combination of potassium phosphite and citrus by-products, isolated or in a combination with other products elicited the antioxidant system. Besides the high activity of antioxidant enzymes, the photosynthetic rates were higher than other treatments. The better performance of coffee seedlings treated with those formulations occurred even in absence of pathogens.

关键词： Coffea arabica Superoxide Dismutase Ascorbate Peroxidase Catalase

Variation of Morpho-Agronomic and Biomass Quality Traits in Elephant Grass for Energy Purposes According to Nitrogen Levels

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American Journal of Plant Sciences 2015年第11期6卷 1685-1696页

作者： Erik da Silva Oliveira Rogério Figueiredo Daher Niraldo josé Ponciano Geraldo de Amaral Gravina josé Augusto de Almeida Sant’ana Romildo Domingos Gottardo Bruna Rafaela da Silva Menezes Paulo Marcelo de souza Cláudio Luiz Melo de souza Veronica Brito da Silva Avelino dos Santos Rocha Antonio Alonso Cecon Novo Universidade Estadual do Norte Fluminense Darcy Ribeiro Campos dos GoytacazesRJBrazil Instituto Federal do Espírito Santo Campus of AlegreAlegreESBrazil Universidade Federal Rural do Rio de Janeiro SeropédicaRJBrazil

Elephant grass is a tropical forage plant widely spread in Brazil, used mainly in the livestock sector and in cattle feeding. Because of its high productivity and photosynthetic capacity, this culture has also been considered an alternative source of renewable energy. Six clones of elephant grass (Pennisetum purpureum Schum.) were evaluated under five levels of nitrogen fertilization (100, 200, 400, 800, and 1600 kg·N·ha-1), in a randomized-block design with a split-plot arrangement with three replicates, from April 2010 to december 2012, in the city of Campos dos Goytacazes— RJ, Brazil. The objective was to obtain estimates of variation in morpho-agronomic traits and biomass quality. We observed that genotypes Cameroon-Piracicaba and Gua?u I/Z2 have great potential to be used, with maximum dry matter yields of 60.97 and 44.10 t·ha-1 per cut for energy purposes among the studied genotypes.

关键词： Nitrogen Fertilization Alternative Energy Energy Biomass Dry Matter Yield Pennisetum purpureum Schum

Synthesis and Characterization of LaNixCo1-xO3 Perovskites via Complex Precursor Methods

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Materials Sciences and Applications 2010年第2期1卷 39-45页

作者： Grace Rafaela Oliveira Silva josé Carlos Santos Danielle M. H. Martinelli Anne Michelle Garrido Pedrosa Marcelo josé Barros de souza Dulce Maria Araujo Melo 不详

This work presents a study on the synthesis of LaNixCo1-xO3 perovskites via complex precursor methods. Perovskite oxides with the composition LaNixCo1-xO3 were synthesized by chelating precursor and polymeric precursor methods using nickel and/or cobalt nitrates, lanthanum nitrate, ethylene glycol, citric acid, and EDTA as starting source. The obtained perovskite were characterized by thermogravimetric analysis, infrared spectroscopy, X-ray diffraction and the morphology of the samples were investigated by N2 adsorption experiments and average medium particle size. TG curves and FTIR spectra were particularly useful in establishing of the optimal calcination temperature of the precursor powders. X-ray diffraction patterns revealed the formation of the perovskite structure in all samples prepared by both synthesis method and after calcinations at 700℃. The results showed that the preparation method resulted in oxides with the intended structure. The specific surface area values were influenced by preparation method.

关键词： LaNixCo1-xO3 Perovskites EDTA Complex Precursor Methods

The Optimization of Aspergillus ***4 Tannase Production under Submerged Fermentation

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Advances in Microbiology 2014年第3期4卷 143-150页

作者： Alessandra Goncalves de Melo Rayssa Cristina Faria Pedroso Luis Henrique souza Guimaraes josé Guilherme Lembi Ferreira Alves Eustáquio souza Dias Mário Lúcio Vilela de Resende Patrícia Gomes Cardoso department of Biology Sector of MicrobiologyFederal University of LavrasLavrasBrazil department of Biology University of Sao PauloRibeirao PretoBrazil department of Food Science Federal University of LavrasLavrasBrazil department of Phytopathology Federal University of LavrasLavrasBrazil

Tannase is a hydrolytic enzyme that is involved in the biodegradation of tannins and it has biotechnological potential in the pharmaceutical, chemical, food and beverage industries. Microorganisms, especially filamentous fungi, are important tannase producers. The aims of this work were to find a potential tannase producer and to improve the cultivation conditions. Three Aspergillus species (A. japonicus 246A, A. tamarii 3 and Aspergillus sp. GM4) were investigated in different culture media (Adams, Czapeck, Khanna, M5 and Vogel) and inducers (1% and 2% tannic acid;1% green tea;1% methyl gallate;1% gallic acid). Aspergillus sp. GM4 and Adams medium were selected. The tannase production by Aspergillus sp. GM4 in Adams medium was induced in the presence of 2% (w/v) tannic acid and gallic acid as carbon sources, while green tea was not able to induce tannase production. The Plackett-Burman screening design was performed with the variables MgSO4, KH2PO4, yeast extract, tannic acid, agitation rate and salt solution. The variables MgSO4 and agitation rate were selected for the optimization of tannase production using a Central Composite Rotatable design. Under optimized conditions, a 2.66-fold increase in the enzyme production was observed with small modifications in the medium composition.

关键词： Aspergillus sp. Response Surface Methodology Submerged Fermentation Tannase Tannic Acid

Extrahepatic right hepatic duct diverticulum: a rare entity

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Hepatobiliary & Pancreatic Diseases International 2010年第2期9卷 213-215页

作者： Eduardo SM Fernandes Raquel L Bernardo Moacir M Fernandes Rogério MC Araújo Renato Sebbe Asterio Monte joséF Coelho Antonio AP souza Joaquim Ribeiro Filho department of General Surgery Section of Hepatobiliary Surgery and TransplantationRio de Janeiro Federal University department of Digestive Surgery and Gastroenterology Pio XII General Hospital

BACKGROUND:Douglas described choledochal cysts in 1852 and Todani proposed an anatomy-based classification in 1977. The classification is the most extensively used,but does not include some rare *** present a case of hepatic duct diverticulum,one of the variations,and discuss its diagnosis and treatment. METHODS:A 57-year-old woman presented with upper abdominal pain and discomfort associated with nausea and *** was finally diagnosed with cholelithiasis and right hepatic duct diverticulum. RESULT:The patient underwent resection of the hepatic duct diverticulum and cholecystectomy,and was asymptomatic 26 months after surgery. CONCLUSIONS:Hepatic duct diverticulum is a rare form of choledochal cyst,not included in Todani’s classification. Todani’s classification including this and other uncommon variations of choledochal cysts must be *** best diagnostic imaging methods and treatment for choledochal cysts must be defined.

关键词： choledochal cysts hepatic duct diverticulum Todani's classification intrahepatic diverticulum

Metastasis to Paranasal Sinuses as the First Presenting Sign of Renal Cell Carcinoma

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Open Journal of Urology 2012年第1期2卷 28-31页

作者： Gustavo Ruschi Bechara josé Anacleto Dutra Resende Júnior Hélio Assuncao Gouveia Thomás Accioly de souza department of Urology Hospital Federal da Lagoa Rio de Janeiro Brazil

The clear cell carcinoma is a relatively rare tumor, represented approximately 85% by renal cell carcinoma (RCC), but has a characteristic of early metastatic, which sometimes spread to unusual places. Metastatic tumors in the paranasal sinuses are very rare. This case report a 65 years-old patient who presented sinusitis and epitaxis as a first sign of renal cell carcinoma with metastasis to the right maxillary sinus, which was opereted at Lagoa Hospital—RJ and strengthen the inclusion of this disease in the differential diagnosis of sinus disease. The renal cell carcinoma is a relatively rare tumor, representing approximately 3% of malignant tumors. About a third of patients with renal cell carcinoma have metastasis at diagnosis. The sinuses are a rare location of metastasis. The maxillary sinuses and the paranasal sinuses are most commonly affected by metastatic tumors to the sinuses region. The most frequent primary tumor to metastasis to paranasal sinuses is the renal cell carcinoma. This report highlights the rarity of the case and the importance in the differential diagnosis of sinus disease.

关键词： Renal Cell Carcinoma Metastasis Sinuses Epistaxis

Growth of Pepper under Different Concentration of the Solutions Used in the Hydroponic System

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Agricultural Sciences 2018年第8期9卷 925-935页

作者： Felipe Guedes de souza Guilherme de Freitas Furtado Antonio Ramos Cavalcante Lucia Helena Garófalo Chaves josely Dantas Fernandes josé Amilton Santos Júnior department of Agricultural Engineering Federal University of Campina Grande Campina Grande Brazil department of Agricultural Engineering Federal Rural University of Pernambuco Recife Brazil

Water availability is a fundamental condition for sustainable agriculture. However, a satisfactory water condition is not always possible in terms of quantity and quality in certain regions, such as the Brazilian semi-arid region. Thus, the purpose of this extremely important research was to evaluate the growth of cv. All Big with six combinations of wastewater plus saline (WW + SW) and two nutrient solution percentages, in a low-cost hydroponic system. The experiment was carried out in a greenhouse at the department of Agricultural Engineering at Federal University of Campina Grande. A completely randomized experimental design was used, with treatments arranged in a factorial scheme (6 × 2), with 5 replications, being the treatments composed by the combination of six proportions of wastewater with saline water (50%/50%;60%/40%;70%/30%;80%/20%;90%/10%;100% of wastewater) and two nutrient solution concentration (80% and 100%), totalizing 60 experimental units. The biometric variables were analyzed at 55 and 96 days after sowing, namely: plant height (PH), stem diameter (SD), leaf number (LN) and leaf area (LA). The interaction between the concentration of the nutrient solution and the ratio of the saline water with wastewater was influenced in the behavior of peppers (cv. All Big) biometric variables. The nutrient solution prepared at 80% of its normal concentration had better performance in the development of plants when mixed with the proportions of water containing more wastewater. The proportion 30% saline water and 70% wastewater (30/70) with concentration of 80% of the nutrient solution obtained better satisfactory results in the studied biometric variables.

关键词： Capsicum annuum L. Saline Water Wastewater Nutrient Solution

Quality of Jatropha curcasL. Seeds Harvested at Different Stages of Fruit Maturation

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American Journal of Plant Sciences 2014年第18期5卷 2716-2725页

作者： Cristiane de Oliveira Veronesi Cristiano Marcio Alves de souza Ademar Pereira Serra Leidy Zulys Leyva Rafull Cesar josé da Silva Vinicius de Vito Ros Vanessa do Amaral Conrad Embrapa Beef Cattle Campo Grande Brazil Embrapa Western Agriculture Dourados Brazil Federal University of Grande Dourados (UFGD—Universidade Federal da Grande Dourados) Dourados Brazil

The aim of this study was to evaluate the physiological quality of Jatropha curcas L. seeds harvested at different stages of fruit maturation and two threshing methods. To analyze the mechanical damage rate an experiment was carried out with five stages of fruit maturation (green, yellow, ripe, dried on the ground and dried on the plant) threshed mechanically and manually. To evaluate the physiological quality, three tests were made;germination, vigor and electrical conductivity, all of them were applied in each storage (0, 120 and 240 days after harvest) and five stages of fruit maturation. It was feasible to infer that the maturation stage of yellow, ripe and dried on the plant fruits showed the best results of the physiological quality of the Jatropha curcas L. seeds. The manual threshing is also recommended in order to preserve the physiological quality of Jatropha curcas L. seeds. When the fruits were harvested at the appropriate stage of maturation (yellow, ripe and dry fruit on the plant) and threshing without mechanical damage, the Jatropha curcas L. seeds are possible to store for 240 days without loss in their germination. Regardless of the threshing system and the maturation stage, the seeds of Jatropha curcas L. lost their vigor from 120 days after harvested, when these seeds were stored in the shadow and in an environment without control on the relative humidity and air temperature.

关键词： Vigor Harvester Electrical Conductivity Germination

Catalytic Esterification of Oleic Acid Over SO42-/MCM-41 Nanostructured Materials

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Materials Sciences and Applications 2011年第6期2卷 706-709页

作者： Alexsandra Rodrigues do Nascimento Gicélia Rodrigues joselaine Carvalho Santana Anne Michelle Garrido Pedrosa Marcelo josé Barros de souza 不详

This paper deals a study concerning the synthesis and catalytic application of a series of SO42-/MCM-41 catalysts with different SO42-/Si ratios, in the catalytic esterification of oleic acid, aiming biofuels production. The catalysts were characterized by XRD and FT-IR. The catalytic tests were carried out in a batch reactor and the obtained results showed good catalytic activity with high degrees of conversions of oleic acid.

关键词： MCM-41 Sulphate Esterification Oleic Acid