Results 31 to 40 of about 9,928 (177)

Estudo fitoquímico e farmacológico de Protium kleinii (Burseraceae) [PDF]

, 2001
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Gradução em Química.As espécies do gênero Protium (Burseraceae) são conhecidas pela produção de exsudatos oleoresinosos e suas ...
Lima, Fabiana Vieira
core  

Soil Influences on Tree Species Distribution in a Rupestrian Cerrado Area

Floresta e Ambiente, 2018
This study aimed to analyze relations between the distribution of tree species and variations in soil texture, fertility and organic matter levels in a rupestrian cerrado area located in Diamantina-MG.
Daniel Dantas, Maria José Souza, Arthur Vieira, Marcio Oliveira, Israel Pereira, Evandro Machado, Claudio Marcio Souza, Wellington Rocha   +7 more
doaj   +1 more source

Evolutionary, Functional and Mechanistic Characterisation of Microbial Terpene Synthase‐Like Genes From Springtails

Angewandte Chemie International Edition, EarlyView.
A genome analysis revealed the presence of many bacterial‐type terpene synthases in springtails. Four enzymes from Sinella curviseta were functionally characterised, resulting in the isolation of several compounds including sinellene ether, the first diterpene ether identified from a terpene synthase that represents a novel skeleton.
Min Wang, Clement Schneider, Zarley Rebholz, Stefan Schulz, Kathy Darragh, Jeroen S. Dickschat   +5 more
wiley   +1 more source

Propagação vegetativa do Protium spp: Protium heptaphyllum, Protium spruceanum e Protium guacayanum. [PDF]

, 2019
Desenvolver tecnologias para propagação vegetativa do Protium sp., utilizando diferentes métodos de clonagem.Dissertação (Mestrado em Biotecnologia e Recursos Naturais) - Universidade do Estado do Amazonas, Manaus. Coorientador: Dra.
LIMA, S. C. de S.
core  

Measuring deuterium concentration in water

Reviews in Analytical Chemistry
Deuterium is a heavy nonradioactive isotope of hydrogen, present in ocean water at a concentration of around 150 parts per million (ppm). In terrestrial nature, deuterium content in water varies by at least a factor of two, while in industry and research,
Zubarev Roman A., Uspenskaya Elena V., Vasil’ev Vasilii G., Levitskaya Olga V., Ivlev Vasilii A., Syroeshkin Anton V.   +5 more
doaj   +1 more source

Participatory mapping and Nature's Contributions to People: Insights from the Amazon Delta

People and Nature, EarlyView.
Abstract Understanding how traditional and coastal communities perceive and interact with nature is key to promoting inclusive conservation. This article examines human–nature interaction in the fishing village of Jubim, located in the Marajó Archipelago, delta of the Amazon River, Brazil.
Lara Sartorio Gonçalves, Vitor Renck, Jezimara da Silva Vinhas, Carolina Carvalho, José Barbosa da Cruz, Leandra R. Gonçalves   +5 more
wiley   +1 more source

Lignans from protium tenuipolium

, 1995
An ether extract of the wood of Protium tenuifolium furnished two lignans characterized as (+)-(2S,3S)-2-(3'',4''-methylenedioxybenzyl)-3-(3',4'-methylenedioxyacetophenone)-butyrolactone [1] and a mixture of (—)-cubebin epimers.
Filho, Wilson W., Cabral, Jose A., Zoghbi, Maria das Graças Bichara, Siqueira, Jane B.G.   +3 more
core   +1 more source

Bracon zuleideae Perioto & Lara (Hymenoptera, Braconidae): seed predation potential, expansion of the geographic distribution and new data on host plant phenology

EntomoBrasilis, 2019
. Here, by the first time, was quantified the predation of seeds of Protium ovatum Engl. (Burseraceae) by Bracon zuleideae Perioto & Lara (Hymenoptera, Braconidae), a phytophagous seed eater, in Parque Nacional Grande Sertão Veredas, located in the State
Nelson Wanderley Perioto, Rogéria Inês Rosa Lara, Danielle Roberta Versuti   +2 more
doaj   +1 more source

Fusion Energy and Tritium Fuel Cycle: Hydrogen Isotope Separation Technologies and Sorbent Materials

Small Methods, EarlyView.
This review surveys sorbent‐based materials for hydrogen isotope separation, a key challenge in fusion fuel processing. Different types of adsorbents are compared in terms of selectivity, kinetics, and operational practicality. Limitations of cryogenic operation and tritium compatibility are highlighted, providing guidance toward efficient, low tritium
Pankaj Sharma, Lawrence Shere, Rosemary Brown   +2 more
wiley   +1 more source

Unified Stein‐Type Characterizations of Bivariate Count Distributions With Applications

Scandinavian Journal of Statistics, EarlyView.
ABSTRACT The derivation and application of Stein identities have received considerable research interest, especially for continuous distributions and univariate discrete distributions. In this article, we derive a unified Stein‐type characterization for three bivariate count models, namely the bivariate Poisson, type‐I bivariate binomial, and bivariate
Shaochen Wang, Christian H. Weiß
wiley   +1 more source