Results 31 to 40 of about 1,978 (176)

Perfil das prescrições de fitoterápicos anabolizantes comercializados por uma farmácia magistral no Rio de Janeiro

Vigilância Sanitária em Debate: Sociedade, Ciência & Tecnologia
Introdução: Desde a antiguidade, o homem utiliza as plantas para diferentes finalidades, inclusive para melhorar o desempenho físico. Porém, em anos recentes, a busca por fitoterápicos destinados a mimetizar o efeito anabolizante, com menor risco para a
Renata Lippi Oakim Costa, Maria Isabel Sampaio dos Santos   +1 more
doaj   +1 more source

Produtos Naturais Industrializáveis da Amazônia

Revista Fitos, 2006
A Amazônia é freqüentemente citada como uma fonte de produtos naturais, cuja industrialização e venda no mercado mundial poderia trazer benefícios significantes à região. Neste trabalho alguns produtos específicos são apresentados nas classes de medicamentos, óleos e gorduras, inseticidas e repelentes de insetos.
openaire   +1 more source

estudo da equação soma-produto de números naturais

C.Q.D. - Revista Eletrônica Paulista de Matemática, 2023
Este trabalho apresenta um estudo sobre uma equação que relaciona a soma e o produto de números naturais. Como encontrar soluções para essa equação pode ser desafiador, focamos em três casos particulares para simplificar a análise e explorar vários métodos para encontrar soluções.
Fernando Soares de Carvalho, Eudes Antonio Costa   +1 more
openaire   +2 more sources

Dimethyl‐, Diethyl‐, and Propylene Carbonates: An Emerging Class of Green Solvents for Organic Synthesis

The Chemical Record, EarlyView.
This review highlights recent advances in the use of organic carbonates, dimethyl carbonate (DMC), diethyl carbonate (DEC), and propylene carbonate (PC), as solvents in organic synthesis. Based on over seventy studies from the past 6 years, it shows their application in different organic reaction types, emphasizing their role in safer and more ...
Gabriela T. Quadros, Livia C. L. Valente, Thiago Barcellos, Daniela Hartwig, Laura Abenante, Eder J. Lenardão   +5 more
wiley   +1 more source

A MassQL‐Based Framework for Rule‐Guided MS/MS Class‐Level Retrieval and Analog Discovery of Cannabinoids

Rapid Communications in Mass Spectrometry, Volume 40, Issue 16, 30 August 2026.
ABSTRACT Rationale Cannabinoids comprise a chemically diverse group of meroterpenoids whose extensive isomerism, variable side‐chain length, and frequent oxidative or rearranged derivatives lead to strongly overlapping yet characteristic MS/MS fragmentation patterns. In untargeted LC–MS/MS datasets, this combination of structural diversity and spectral
Julia Maia Galvão de Queiroz, Fernanda Oliveira Chagas, Valdir Florêncio Veiga‐Júnior, Monica Costa Padilha, Ricardo M. Borges   +4 more
wiley   +1 more source

Acaricidal Activity against and Chemical Composition of Peel Essential Oils of Three Species Cultivated in NE Brazil

Natural Product Communications, 2010
The repellency and fumigant toxicities of the peel essential oils of Citrus sinensis var. pêra (LP), C. sinensis var. mimo ( LM ), and C. aurantium ( LL ) cultivated in northeast Brazil were evaluated against Tetranychus urticae.
Claudio Pereira Araújo Júnior, Claudio Augusto Gomes da Camara, Ilzenayde Araújo Neves, Nicolle de Carvalho Ribeiro, Cristianne Araújo Gomes, Marcílio Martins de Moraes, Priscilla de Sousa Botelho   +6 more
doaj   +1 more source

Kalanchoe fedtschenkoi R. Hamet & H. Perrier, a non-conventional food plant in Brazil: HPLC-DAD-ESI-MS/MS profile and leaf histochemical location of flavonoids

Journal of Applied Botany and Food Quality, 2022
Kalanchoe fedtschenkoi (Crassulaceae) is a non-commercial food species in Brazil, whose leaves are used in several aqueous preparations. Their morphology and potential nutraceuticals (e.g., antioxidant phenolics) have been poorly studied.
Jamile Marques Casanova, Luana Beatriz dos Santos Nascimento, Livia Marques Casanova, Silvana Daflón Castricini, Jacqueline Elis Elis de Souza, Raíssa Mara Kao Yien, Sônia Soares Costa, Eliana Schwartz Tavares   +7 more
doaj   +1 more source

Synergistic Effect of Silanized Ramie Fiber and Montmorillonite Clay on the Mechanical, Thermal, and Dynamic‐Mechanical Properties of Polyester Composites

Polymer Composites, Volume 47, Issue 10, Page 9042-9055, 20 May 2026.
Multiscale composite reinforced with silane‐modified ramie fiber and clay. ABSTRACT Multiscale polymer composites combining natural fibers and layered silicates can balance stiffness, toughness, and thermal stability when interfacial interactions are properly engineered.
Daniel Rossi Klein, Maria Eduarda Escher Maletz, Matheus Vinícius Gregory Zimmermann, Ademir José Zattera, Daiane Romanzini   +4 more
wiley   +1 more source

Isolation of Phenolics from by Combined Counter-current Chromatography and Gel-Filtration

Natural Product Communications, 2014
Nine phenolic compounds, quercetin, epi -catechin, catechin, 4-hydroxybenzoic acid, kaempferol 3- O -β-glucopyranoside, quercetin 3- O -β-glucopyranoside, quercetin 3- O -6″- trans -coumaroyl-β-glucoside, kaempferol 3- O -β-rutinoside and quercetin 3- O -
Fernanda das Neves Costa, Marcos Daniel da Silva, Ricardo Moreira Borges, Gilda Guimarães Leitão   +3 more
doaj   +1 more source

Recent Contributions of Organic Synthesis to Forensic Science

ChemPlusChem, Volume 91, Issue 2, February 2026.
Forensic science is a multidisciplinary field that plays a vital role in providing scientific evidence for criminal investigations. This review highlights advances and opportunities at the interface between organic synthesis and forensic science, with applications in drug identification, forensic toxicology, and latent fingerprint detection and ...
Gustavo dos Santos Martins, Mariana dos Santos Dupim, Rodrigo Garcia Agostinho, Fernanda Gadini Finelli   +3 more
wiley   +1 more source