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A SIMPLE DEVICE TO MONITOR SEDIMENT YIELD FROM GULLY EROSION

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International Journal of Sediment Research 2005年第3期20卷 90-94页

作者： Antonio Jose teixeira guerra,Marcos FIGUEIREDO Senior Lecturer in Physical Geography Federal University of Rio de Janeiro Av. Canal de Marapendi 1100 apto. 608 Bloco 2 Barra da Tijuca-CEP Rio de Janeiro Rio de Janeiro 22.631-050 Brazil Lecturer in Physical Geography State University of Mato Grosso

The focus of this paper is the design and use of a simple device to determine sediment yield from gullies. The simplicity and low cost makes this device especially useful when resources are limited. In this study, it was used to measure sediment yield at a site called An?o Gully, in a study area in Cáceres municipality (15o 57’ S and 57o 31’ W, Mato Grosso State, Brazil). This gully is located 28 kilometres from the center of the town, Cáceres, and was easy to reach during and immediately after storm events to make measurements with this device.

关键词： Gully erosion Sediment yield Gully monitoring Simple device

Monte Carlo Simulations for a Preliminary Design of TRIGA IPR-R1 PGAA Facility

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Journal of Chemistry and Chemical Engineering 2016年第6期10卷 256-270页

作者： Bruno teixeira guerra Alexandre Soares Leal Claubia Pereira Maria Angela de Barros Correia Menezes DEN (Departamento de Engenharia Nuclear) UFMG (Universidade Federal de Minas Gerais) Av. Antonio Carlos 6627 Campus Pampulha CEP 31270 901 Belo Horizonte Minas Gerais Brazil CDTN (Nuclear Technology Development Center) CNEN (Brazilian Commission for Nuclear Energy) Av. Antonio Carlos 6627 Campus UFMG CEP 31270 901 Belo Horizonte Minas Gerais Brazil

In this paper, the evaluation of a preliminary design of a PGAA （prompt gamma activation analysis） facility based on Monte Carlo simulations is presented and discussed. The implementation of the PGAA method at the CDTN （nuclear technology development centre） would increase the applications of the TRIGA reactor. The preliminary design is based on a quasi vertical hollow cylinder （called neutron extractor） in the reactor pool to extract the neutron flux. This study evaluates the neutron flux in the upper position of the cylinder in the suggested position of the samples to be analyzed by the PGAA. The calculations of the radioactive capture reaction rates and of the detection limits for some isotopes were performed. Through all these calculations, the feasibility of the application of the PGAA method at the IPR-R1 installations was evaluated. According to the obtained results, it can be concluded that is possible to apply the PGAA method at the IPR-R1 reactor, even with its design restrictions.

关键词： PGAA facility neutron activation analysis TRIGA IPR-R1 PGAA NAA.

Quality of Semi-Prepared Products from Rainbow Trout Waste(Onchorynchus mykiss)by Using Different Technological Strategics

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Food and Nutrition Sciences 2014年第6期5卷 571-580页

作者： Karoline Ribeiro Palmeira Eliane teixeira Mársico Laís Doro Mosar Lemos Claudia Emília teixeira Vania Margaret Flosi Paschoalin Maria Lúcia guerra Monteiro Carlos Adam Conte Júnior Department of Food Technology Fluminense Federal UniversityRio de JaneiroBrazil Department of Biochemistry Chemistry InstituteFederal University of Riode JaneiroRio de JaneiroBrazil

The consumption of freshwater fish and fish products has gradually grown worldwide over the last decades, generating a proportional waste increase. The objective of the present study was to assess the chemical and bacteriological quality of restructured fish product, meatball-type, prepared with rainbow trout (Onchorynchus mykiss) waste added of 1% transglutaminase (MTG), 4% textured soy protein (TSP) and replacing part of the sodium chloride with potassium chloride (75%/25%) as described below: T1—starch addition (control);T2—MTG addition (1%);T3—soy protein addition (4%);T4—soy protein addition (4%) and MTG addition (1%);T5—soy protein addition (4%), MTG addition (1%) and partial replacement of salt (75% NaCl/25% KCl). Total aerobic mesophilic bacteria (TAMB), 2-thiobarbituric acid reactive substances (TBARS), pH determination and quantification of biogenic amines were performed on the day after manufacturing (P0) and after 60 days of storage (P1) at -25℃?± 2℃. The results showed that there was no significant difference (p < 0.05) of microbiological quality, TBARS and pH after storage. T4 presented the lowest total biogenic amine content (256.84 mg/kg) whereas T3 and T5 had the highest value (791.36 and 707.19 mg/kg, respectively) in this parameter. Putrescine was the biogenic amine that presented the highest concentration (504.00 mg/kg) in T3 and cadaverine that presented the smallest concentration (0.36 mg/kg) in T4. The use of technological strategies for developing new products with non-commercial fillets kept the most standards, having changes only in some biogenic amines.

关键词： Oncorhynchus mykiss Soy Protein Microbial Transglutaminase Salt Replacer Biogenic Amine

Physiological Quality of Pigeonpea Seed after Application of Desiccant Herbicides

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American Journal of Plant Sciences 2015年第6期6卷 826-832页

作者： Raniele Tadeu Guimaraes Itamar Rosa teixeira André José Campos Gisele Carneiro da Silva Ivano Alessandro Devilla Alessandro guerra da Silva Paulo César Timossi Department of Agricultural Engineering Sate University of GoiásAnápolísBrazil Department of Agricultural University of Rio VerdeRio VerdeBrazil Department of Agricultural Federal University of GoiásJataíBrazil

The pre-harvest application of herbicides may impair seed quality. This way, this paper was conducted to evaluate the effects of the application of desiccant herbicides on the physiological quality of pigeonpea seeds. Six batches of seeds from plants desiccated with glyphosate were evaluated at doses: 1.125 (B1), 1.5 (B2) and 1.875 L·ha-1 (B3);and Gramocil (20% Paraquat + 10% Diurom) at doses: 1.5 (B4) and 2 L·ha-1 (B5), and a control which received no application (B6). Seed viability was assessed through the germination standard test, and vigor through the first germination count, accelerated aging, electrical conductivity, seedling length, seedling dry matter and biomass density tests. The experimental design was the completely randomized, with four replications. Data were submitted to variance analysis, and when significant effects were observed, the Scott- Knott test was carried out at 5% probability using the SISVAR 5.1 software. The results showed that: a) the application of 1.875 L·ha-1 of glyphosate was harmful to pigeonpea seed viability and vigor, evaluated through the accelerated aging test;b) applications of glyphosate in a 1.875 L·ha-1 dose and Gramocil in 2 L·ha-1 resulted in low vigor according to the electrical conductivity test of seeds;and c) the seed vigor measured by the first count, seedling length, seedling dry matter and biomass density test was not influenced by the type of desiccant applied.

关键词： Cajanus cajan(L.)Millsp. Pre-Harvest Desiccation Deterioration Maturity Vigor

Influence of Water Content on the Quality of Pigeonpea Seeds

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American Journal of Plant Sciences 2017年第10期8卷 2397-2406页

作者： Cristiane Fernandes Lisboa Rodrigo Starnek Lopes De Araújo Itamar Rosa teixeira José Hortêncio Mota Alessandro guerra Da Silva Marcos Eduardo Viana De Araújo Deyner Damas Aguiar Silva Edgar Estevam Franca Isneider Luiz Silva Fernando Ribeiro Teles De Camargo Department of Agricultural Engineering Sate University of Goiás Anápolís Brazil Department of Agricultural University of Rio Verde Rio Verde Brazil Department of Agricultural Federal University of Goiás Jataí Brazil

The species Cajanus cajan L. where pigeonpea is from presents a harvest potential in tropical regions for it is used as human and animal feed, besides being used as green fertilizer. However, the harvest area of this Fabaceae is still insignificant, due to especially the lack of quality seeds. In this context, it is possible to affirm that drying and store are portrayed as important steps for obtaining superior quality seeds. The aim of this study is to evaluate the physiologic quality of dwarf pigeonpea seeds, with different water content during storage. A factorial scheme 3 × 6 was adopted in the delimitation completely randomized, with four replications. Treatments were constituted by the combination of lots of seeds containing three different water contents (11%, 14% and 16%), submitted to a 10-month storage period, with evaluations every two months (0, 2, 4, 6, 8 and 10). Seeds were stocked in a bag type kraft under normal lab conditions, that is, no control. Physiologic quality of the seeds was evaluated through the following tests: Germination Pattern Test—GPT, first count of germination, accelerated aging and electric conductivity. It can be concluded that pigeonpea with hard seeds containing water content at 11% existing superior physiologic quality throughout the 10-month storage, under no controlled condition, certainly promoted by the less intense breathing from the reserves cumulated in the seed lot. Pigeonpea seeds storage with water content superior to 14% promotes a sharp decrease of physiologic quality, due to an increase in metabolic activity.

关键词： Cajanus cajan L. Physiologic Deterioration Seed Quality Viability and Vigour