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Registros recuperados: 18
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A review of analytical methods for the determination of four new phosphodiesterase type 5 inhibitors in biological samples and pharmaceutical preparations BJPS
Codevilla,Cristiane Franco; Castilhos,Tamara dos Santos; Bergold,Ana Maria.
The introduction of oral phosphodiesterase type 5 inhibitor therapy in 1998 revolutionized the treatment of erectile dysfunction. Erectile dysfunction is the most common sexual problem in men. It often has a profound effect on intimate relationships and quality of life. The analysis of pharmaceuticals is an important part of the drug development process as well as for routine analysis and quality control of commercial formulations. Whereas the determination of sildenafil citrate, vardenafil and tadalafil are well documented by a variety of methods, there are few publications about the determination of udenafil, lodenafil carbonate, mirodenafil and avanafil. The paper presents a brief review of the action mechanism, adverse effects, pharmacokinetics and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphodiesterase type 5 inhibitors/determination; Phosphodiesterase type 5 inhibitors/pharmaceutical preparations; Phosphodiesterase type 5 inhibitors/determination; Phosphodiesterase type 5 inhibitors/biological samples; Analytical methods; Erectile dysfunction.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100002
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Amostragem de solo para análise química. Infoteca-e
MIRANDA, L. N. de.
bitstream/item/105841/1/comtec-07.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Amostragem; Análise Química; Cerrado; Solo.; Analytical methods; Sampling; Soil..
Ano: 1979 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549314
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Amostragem de solos para análise quimica. Infoteca-e
MENDES, A. M.; RICCI, M. dos S. F..
Seleção e identificação da área; Época de amostragem; Profundidade de de amostragem; Local execução de amostragem; Freqüência de amostragem;
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Amostragem de solo.; Análise Química; Solo.; Analytical methods; Sampling; Soil..
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/700851
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Amostragem do solo para analise quimica. Infoteca-e
MIRANDA, L. N. de.
bitstream/item/98808/1/cirtec-11.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Classificação.; Análise; Amostragem; Análise Química; Química; Solo.; Analytical methods; Chemical analysis; Soil.; Sampling.
Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549428
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Analise de funcoes de crescimento. Infoteca-e
GUIMARAES, D. P.; RODRIGUEZ CASTRO, L. H..
bitstream/item/75938/1/bolpd-29.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Povoamento; Modelo de Gompertz; Growth.; Análise; Crescimento; Eucalipto; Eucalyptus Grandis; Modelo Matemático.; Analytical methods; Mathematical models..
Ano: 1986 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549448
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Analytical methods for mercury speciation in several matrixes: a review IPB - Escola Superior Agrária
Ramalhosa, Elsa; Río-Segade, Susana.
Mercury is one of the hazardous contaminants that may be present in the environment. Moreover, its toxicological effects are strongly dependent on the chemical form of the element, being the organic species the most toxic. In spite of this, the determination of mercury compounds in environmental samples, such as water, soils, sediments and biological matrixes, is of great importance. This review examines the current state of the sample treatments that have been developed, during the last 18 years (1990-2007),previous to separation and detection of mercury compounds, namely acid lixiviation, distillation,alkaline digestion and supercritical fluid extraction, as well as of the chromatographic techniques (gas chromatography and high performance liquid...
Tipo: Article Palavras-chave: Mercury; Speciation; Analytical methods; Gas chromatography; Liquid chromatography.
Ano: 2008 URL: http://hdl.handle.net/10198/3605
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Chemical migration during soil water retention curve evaluation Anais da ABC (AABC)
Pires,Luiz F.; Villanueva,Felipe C.A.; Dias,Nivea M.P.; Bacchi,Osny O. Santos; Reichardt,Klaus.
Wetting and drying (W-D) cycles can induce important elemental migrations in soils. The main purpose of this work was to study the possible existence of soil chemical elemental migrations in samples submitted to repeated W-D cycles during evaluations of soil water retention curve (SWRC). The experimental measurements were carried out by Atomic Absorption Spectrometry (AAS) for Ca2+, Mg2+ and K+ on samples of three different Brazilian tropical soils (Geric Ferralsol, Eutric Nitosol and Rhodic Ferralsol). Results demonstrate an increase in the electrical conductivity of the water extracted from the samples and significant losses of Ca2+, Mg2+ and K+ during the applications of up to nine W-D cycles. It was also observed differences in SWRC for all soils when...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Analytical methods; Soil structure; Wetting-drying cycles; Soil physics.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300028
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Comparação de duas soluções extratoras na resolução de cinco sistemas enzimáticos em folhas jovens de cupuaçuzeiro (Theobroma grandiflorum Schum.). Infoteca-e
COSTA, M. R.; GAIA, J. M. D.; POLTRONIERI, M. C..
bitstream/item/34527/1/ORIENTAL-CirTec4.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Extração de enzima; Eletroforese de isoenzima; Substância extratora; Isoenzymes.; Cupuaçu; Folha; Theobroma Grandiflorum.; Analytical methods; Electrophoresis; Enzymes; Leaves..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/377275
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Comparação entre o método das pesagens e o método gravimétrico na determinação do conteúdo de umidade atual dos solos no Estado do Amazonas. Infoteca-e
CORRÊA, J. C.; ROSSETTI, A. G..
Foram realizadas comparações entre o Método das Pesagens e o Método Gravimétrico Padrão utilizados para determinar a umidade dos solo. Para determinar a umidade foram tiradas dez amostras e feitas três dimensões nas profundidades de 0cm a 20cm em quatro tipos de solo. Os dados foram comparados através do coeficiente de correlação (r), encontrando-se r=0,9607 para Podzolico Vermelho Amarelo sob capoeira; r= 0,8988 para Podzolico Vermelho Amarelo sob mata sem uso; r= 0,8967 para Latossolo Amarelo sob mata sem uso; e r=0,9503 para Latossolo Amarelo sob mata com uso, todos positivos e significativos, indicando equivalência entre os dois métodos para esses solos. Recomenda-se o Método das Pesagens por ser mais simples, rápido e exigirem instrumentos mais simples.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Determinação; Brasil; Amazonas.; Método; Umidade.; Solo; Analytical methods; Humidity; Soil..
Ano: 1984 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665139
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Database Management and Analytical Techniques for Agricultural Planning: A Course Manual AgEcon
Foreword, Introduction, Integrated Database Management for Agricultural Planning and Research, by J.W.T. Bottema; Introduction to Relational Database Management Systems, by Gary Timoshenko; Access Relational Database Management System, by Terry van Druemel, Hasrat Madiadipura, Muhamad Arif and Gary Timoshenko; Geographic Information Systems: An Overview, by Mohammad A.T. Chowdhury; Geographical Information Systems: MapInfo, by Muhamad Arif, Siemon Hollema and Mohammad Chowdhury; Sets: An Approach to Decision-Making and Conceptualization, by J.W.T. Bottema and Mohammad A.T Chowdhury; Introduction to Spreadsheets, Gary Timoshenko; Elementary Statistical Methods for Agricultural Research, by Siemon Hollema; Linear Programming and Multiple Goal Linear...
Tipo: Report Palavras-chave: Databases; Information services; Analytical methods; Planning; Agricultural and Food Policy; International Development.
Ano: 2000 URL: http://purl.umn.edu/32732
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Influence of distillation time and sample mass on sulfur dioxide analysis in passion fruit juice through Monier-Williams method Ciênc. Tecnol. Aliment.
Takahashi,Anita Akiko; Martins,Maristela Satou; Della Torre,Jussara Carvalho de Moura; Oliveira,Camila Cardoso de; Granato,Daniel.
AbstractThis study aimed to evaluate the effect of the distillation time and the sample mass on the total SO2 content in integral passion fruit juice (Passiflora sp). For the SO2 analysis, a modified version of the Monier-Williams method was used. In this experiment, the distillation time and the sample mass were reduced to half of the values proposed in the original method. The analyses were performed in triplicate for each distilling time x sample mass binomial, making a total of 12 tests, which were performed on the same day. The significance of the effects of the different distillation times and sample mass were evaluated by applying one-factor analysis of variance (ANOVA). For a 95% confidence limit, it was found that the proposed amendments to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sulfur dioxide; Analytical methods; Passion fruit juice; Sulfites; Design of experiments.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000300434
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Métodos de extração de hidrocarbonetos policíclicos aromáticos em amostra de solo, sedimento e lodo. Infoteca-e
QUEIROZ, S. C. N.; FERRACINI, V. L.; SOUZA, D. R. C. de.
bitstream/item/12265/1/documentos_79.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Hidrocarbonetos policíclicos aromáticos; Métodos de extração; Análise química; Extração; Hidrocarboneto; Solo; Adubo de esgoto; Amostragem; Analytical methods; Extraction; Polycyclic aromatic hydrocarbons.
Ano: 2009 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/83100
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Participatory Prospective Analysis: Exploring and Anticipating Challenges with Stakeholders AgEcon
Bourgeois, Robin; Jesus, Franck.
Part I The Participatory Prospective Analysis (PPA) Method The philosophy of the PPA method Methodological components Presentation of the method Definition of the system's limits Identification of variables Selection and definition of key variables Mutual influence analysis Interpretation of influence/dependence links Definition of the states of variables Building scenarios Using scenarios Implementing the PPA Equipment and resources Organizing group work The question of experts and expertise Part II The PPA Method at Work: The Case of Secondary Crop Research and Development Prospects in Asia and the Pacific Context Organization of the PPA System identification Creation of a working group and workshop organization Process and results...
Tipo: Report Palavras-chave: Decision making; Analytical methods; Tools; Research and Development/Tech Change/Emerging Technologies.
Ano: 2004 URL: http://purl.umn.edu/32731
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Patulin in food: state-of-the-art and analytical trends Rev. Bras. Frutic.
Silva,Sandra Jussara Nunes da; Schuch,Paula Zilles; Bernardi,Carmem Ronise; Vainstein,Marilene Henning; Jablonski,André; Bender,Renar João.
Patulin is a mycotoxin produced by several fungal species of the genera Penicillium and Aspergillus, found on several fruit species and, remarkably, in apples and apple products. Patulin has a broad spectrum of toxicity, including carcinogenicity and teratogenicity in animals. Due to the stability of the molecule, considerable amounts of patulin still remain in apple products after processing. This paper reviews different analytical methods for patulin determination and methods to reduce levels of patulin in apple products as well.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Micotoxins; Analytical methods; Apple.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452007000200043
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Reconciling Actors' Preferences in Agricultural Policy - Towards a New Management of Public Decisions AgEcon
Jesus, Franck; Bourgeois, Robin.
To attain sustainable development in the 21st century, the world's population still has to overcome many challenges; hunger, poverty, environmental degradation and depletion. Policy design in such a context is and will remain a complex task. On one hand, policy makers often lack information on stakeholders' strategies and constraints as well as on potential options for improvement. On the other hand, stakeholders do not always adhere to policies for lack of understanding of the pursued goals. It is not unusual to observe that often, real policy effects are not those initially expected. Furthermore, existing decision-making mechanisms for public intervention are increasingly questioned due to pressure for market liberalization, decentralization processes...
Tipo: Report Palavras-chave: Analytical methods; Tools; Decision making; Agricultural policies; Agricultural and Food Policy.
Ano: 2003 URL: http://purl.umn.edu/32737
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Reexamination of analytical methods for Al and Mo in plant material. Infoteca-e
ISHIZUKA, J.; MESQUITA FILHO, M. V. de.
bitstream/item/192045/1/ID06911-CRI1613.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Aluminium; Plants; Brasil; Japão; BIBJICACPAC.; Alumínio; Análise; Cerrado; Molibdênio; Planta; Pesquisa; Cooperação Internacional; Analytical methods; Molybdenum.
Ano: 1981 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549938
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The Dietary Inclusion of Chickpea Seeds (Cicer Arietinum L.) Influences the Thermal Properties of Muscle Proteins, But Not the Texture of Drumstick Muscle in Broiler Chickens Rev. Bras. Ciênc. Avic.
Muszyński,S; Tomaszewska,E; Kwiecień,M; Dobrowolski,P; Świetlicka,I; Tanaś,W; Sołowiej,B; Ejtel,M; Szcześniak,E; Tomczyk-Warunek,T.
ABSTRACT In this study, the effect of replacement of soybean meal with raw chickpea seeds as a primary protein source in the diet of broiler chicks on physical properties of drumstick muscle (m. gastrocnemius) was examined. One-day-old Ross 308 broilers (n=160) were fed soybean meal (n=80) or raw chickpea seeds (n=80) as a primary protein source for 42 days. Drumstick muscles, after dissection and storage for 24 h at 5°C, were subjected to texture profile analysis to determine changes in the structural and material integrity, and the thermal stability of muscle proteins were assessed on the basis of differential scanning calorimetry measurements. Light meromyosin, heavy meromyosin and sarcoplasmic proteins in the meat samples of broilers fed raw chickpea...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Analytical methods; Dietary protein; Muscle structure; Physical properties.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200302
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Trophic parameters and method validation in Lake Riñihue (North Patagonia: Chile) from 1978 through 1997 RChHN
WOELFL,STEFAN; VILLALOBOS,LORENA; PARRA,ÓSCAR.
Lake Riñihue is the last in a chain of glacially derived oligotrophic lakes in southern Chile and was the subject of limnological research by Dr. Hugo Campos and co-workers at the Universidad Austral de Chile, Valdivia, Chile, since the 1970's. Prof. Campos died in the field in 1998, and this paper now presents a review of these data with comments on methodology relevant to trophic parameters of this lake. Data are presented on inorganic nutrients, chlorophyll a, phytoplankton biomass, primary production and Secchi depth obtained over a period of 21 years between 1978 and 1997 in order to evaluate potential changes in these parameters over time. Non-parametric Wilcoxon rank sum tests were applied to determine temporal trends and revealed: (1) total...
Tipo: Journal article Palavras-chave: Eutrophication; North Patagonian lake; Nutrients; Trophy; Analytical methods.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000300010
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