Consulta: subjectFacets:"Analytical methods"
Registros recuperados: 17
Data/hora: 09/06/2024 03:34:54

Métodos de extração de hidrocarbonetos policíclicos aromáticos em amostra de solo, sedimento e lodo.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Amostragem de solo para análise química.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Comparação entre o método das pesagens e o método gravimétrico na determinação do conteúdo de umidade atual dos solos no Estado do Amazonas.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Amostragem de solos para análise quimica.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Comparação de duas soluções extratoras na resolução de cinco sistemas enzimáticos em folhas jovens de cupuaçuzeiro (Theobroma grandiflorum Schum.).
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Determinação dos teores de carbono orgânico em solos do Acre com diferentes procedimentos analíticos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SILVA, L. M. da; RODRIGUES, M. de J. M.; TAVARES, O. C. H.; SANTOS, O. A. Q. dos; WADT, P. G. S.; PEREIRA, M. G.
Os teores de carbono orgânico total (COT) no solo podem ser determinados por técnicas que se baseiam tanto na combustão por via úmida quanto por via seca. No entanto, a primeira apresenta-se como uma técnica demorada, porém, largamente utilizado nos laboratórios brasileiros para análise de solos. O objetivo da presente pesquisa é analisar os teores de carbono orgânico de solos do Acre submetidos à diferentes procedimentos analíticos. As amostras foram submetidas a diferentes condições de tratamento sendo aquecidas e não aquecidas, maceradas e não maceradas, bem como variar a concentração do titulante, sendo empregadas seis diferentes formas de determinação do carbono. Verificou-se que todos os métodos empregados apresentaram alta e significativa correlação...
Tipo: Folhetos
Palavras-chave: Carbono orgânico; Métodos analíticos; Formação Solimões; Acre; Amazônia Ocidental; Western Amazon; Química do Solo; Matéria Orgânica; Soil organic carbon; Soil chemistry; Soil organic matter; Analytical methods.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136679

Amostragem do solo para analise quimica.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Reexamination of analytical methods for Al and Mo in plant material.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Analise de funcoes de crescimento.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: 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

Participatory Prospective Analysis: Exploring and Anticipating Challenges with Stakeholders
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: 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

Reconciling Actors' Preferences in Agricultural Policy - Towards a New Management of Public Decisions
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: 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

Database Management and Analytical Techniques for Agricultural Planning: A Course Manual
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
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

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
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: 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

Patulin in food: state-of-the-art and analytical trends
Provedor de dados: Revista Brasileira de Fruticultura
Autores: 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

Trophic parameters and method validation in Lake Riñihue (North Patagonia: Chile) from 1978 through 1997
Provedor de dados: Revista Chilena de Historia Natural
Autores: 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

Chemical migration during soil water retention curve evaluation
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: 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

A review of analytical methods for the determination of four new phosphodiesterase type 5 inhibitors in biological samples and pharmaceutical preparations
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: 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