Results 71 to 80 of about 9,208 (192)

Dependence of Biocatalysis on D/H Ratio: Possible Fundamental Differences for High-Level Biological Taxons

Molecules, 2020
The kinetics of biological reactions depends on the deuterium/protium (D/H) ratio in water. In this work, we describe the kinetic model of biocatalytic reactions in living organisms depending on the D/H ratio.
Igor Zlatskiy, Tatiana Pleteneva, Alexander Skripnikov, Tatiana Grebennikova, Tatiana Maksimova, Nadine Antipova, Olga Levitskaya, Mariia Makarova, Igor Selivanenko, Anton Syroeshkin   +9 more
doaj   +1 more source

Chemical and Biological Properties of Hymenaea courbaril L.: A Review

Chemistry &Biodiversity, Volume 23, Issue 2, February 2026.
PRISMA‐style flowchart showing the screening process of studies identified and selected in the review has been added to the attachments. ABSTRACT Hymenaea courbaril L., commonly known as jatobá, is a plant traditionally used by native populations for medicinal purposes, in addition to providing edible fruits and durable wood for construction.
Cicera Alane Coelho Gonçalves, Geane Gabriele de Oliveira Souza, Ana Maria Fernandes Duarte, Joice Barbosa do Nascimento, Fázia Fernandes Galvão Rodrigues, José Galberto Martins da Costa, Fabíola Fernandes Galvão Rodrigues   +6 more
wiley   +1 more source

Acid- and Base-Catalyzed Deuterium-Protium Exchange on Some Polyazaindenes

, 1968
The acid-catalyzed deuterium-protium exchange of compounds 1, 2, and 3 occurs at the positions typical for electrophilic substitutions.These substitutions are shown to occur on the free bases. The base-catalyzed deuterium-protium exchange of compounds 1,
Paudler, William W., Helmick, Larry S.
core   +1 more source

In vitro antiparasitic activity and chemical composition of the essential oil from Protium ovatum leaves (Burceraceae)

Anais da Academia Brasileira de Ciências, 2017
Leishmaniasis and trypanosomiasis are globally widespread parasitic diseases which have been responsible for high mortality rates. Since drugs available for their treatment are highly hepatotoxic, nephrotoxic and cardiotoxic, adherence to therapy has ...
ELISÂNGELA B.B. ESTEVAM, ISABELLA P.B. DE DEUS, VANESSA P. DA SILVA, ELIZABETH A.J. DA SILVA, CASSIA C.F. ALVES, JOSÉ MILTON ALVES, CRISTIANE M. CAZAL, LIZANDRA G. MAGALHÃES, MARIANA C. PAGOTTI, VIVIANE R. ESPERANDIM, ALEX F. SOUZA, MAYKER L.D. MIRANDA   +11 more
doaj   +1 more source

Evaluating the Efficacy of Low Salinity Waterflood and Electrokinetic Enhanced Oil Recovery in Mitigating Gas Condensate Banking

Energy Science &Engineering, Volume 14, Issue 1, Page 322-334, January 2026.
Left panel: Natural Depletion → sharp pressure decline → condensate bank builds → reduced gas rate. The schematics show the condensate bank around the producer. Middle panel: Low Salinity Water → brine injection → improved pressure support → piston‐like condensate displacement → higher gas rate.
Princewill M. Ikpeka, Chidiebele E. J. Uzoagba   +1 more
wiley   +1 more source

Chemical Composition, Enantiomeric Distribution, and Antifungal Activity of the Oleoresin Essential Oil of Protium amazonicum from Ecuador

Medicines, 2017
Background: Protium species (Burseraceae) have been used in the treatment of various diseases and conditions such as ulcers and wounds. Methods: The essential oil from the oleoresin of Protium amazonicum was obtained by hydrodistillation and analyzed by ...
Prabodh Satyal, Chelsea N. Powers, Rafael Parducci V., Robert L. McFeeters, William N. Setzer   +4 more
doaj   +1 more source

Cromatografando em coluna com resina de almécega: um projeto para química orgânica experimental Column chromatography with almécega resin: a project for experimental organic chemistry

Química Nova, 2007
The use of natural products to demonstrate the silica gel column chromatography technique is proposed in the present article. It describes the separation of the triterpenes alpha- and beta-amirin from the diol breine and maniladiol, obtained from ...
Gerardo Magela Vieira Júnior, Adonias Almeida Carvalho, Wellington de Abreu Gonzaga, Mariana H. Chaves   +3 more
doaj   +1 more source

Protium hebetatum Daly from Colombia collected by F. Toro, E. Álvarez, A. Camargo #219

, 2019
File Name: TOLI-26030-ZAR-05-262.jpg CÓDIGO FOTO: TOLI-26030-ZAR-05-262- Fotografía: SI Nº TOLI: TOLI-26030 PARCELA: ZAR-05 CÓDIGO: 262 Nº COLECTA: 219 NUEVOS COLECTORES: Alejandro Camargo, Felipe Toro & Esteban Alvarez COLECTORES: F. Toro, E. Álvarez, A.
Camargo, A., (8341683), Toro, F. (8341677), Álvarez, E., (8341680)   +2 more
core   +1 more source

Protium hebetatum Daly from Colombia collected by F. Toro, E. Álvarez, A. Camargo #267

, 2006
File Name: TOLI-23757-ZAR-05-312.jpg CÓDIGO FOTO: TOLI-23757-ZAR-05-312- Fotografía: SI Nº TOLI: TOLI-23757 PARCELA: ZAR-05 CÓDIGO: 312 Nº COLECTA: 267 NUEVOS COLECTORES: Alejandro Camargo, Felipe Toro & Esteban Alvarez COLECTORES: F. Toro, E. Álvarez, A.
Camargo, A., (8341683), Toro, F. (8341677), Álvarez, E., (8341680)   +2 more
core   +2 more sources

Flora das cangas da Serra dos Carajás, Pará, Brasil: Burseraceae

Rodriguésia
Resumo É apresentado o levantamento das espécies de Burseraceae que ocorrem nas formações de canga na Serra dos Carajás, no estado do Pará, Brasil. Apenas uma espécie foi registrada: Protium pilosissimum.
Alice Lima Hiura, Maurício Takashi Coutinho Watanabe   +1 more
doaj   +1 more source