Results 71 to 80 of about 9,928 (177)

Protium cuneatum Swart from Colombia collected by W. López #2188

, 2018
File Name: TOLI-25962-RAS-01-D2-60.jpg CÓDIGO FOTO: TOLI-25962-RAS-01-D2-60- Fotografía: SI Nº TOLI: TOLI-25962 PARCELA: RAS-01 CÓDIGO: D2-60 Nº COLECTA: 2188 NUEVOS COLECTORES: Wilmar López Oviedo COLECTORES: W.
López, W., López, W. (8341509)
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

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

Individual Trees Respond to 40 Years of Climate Change Through Leaf Functional Trait Acclimation

Global Change Biology, Volume 32, Issue 7, July 2026.
We measured leaf traits from historic and contemporary herbarium specimens collected from the same individual trees in the southern Peruvian Amazon and compared trait changes to local changes in climate which included increasing temperature, decreasing precipitation, and increasing [CO2]. We found significant decreases in leaf mass per area (LMA), leaf
Riley P. Fortier, Rodolfo Vásquez Martínez, Rocío Del Pilar Rojas Gonzalez, Rachel Collins, Luis Valenzuela Gamarra, Abel Montagudo Mendoza, Oliver L. Phillips, Timothy R. Baker, J. Sebastián Tello, Kenneth J. Feeley   +9 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

From [NHC─H]• to Persistent σ‐Complex Radicals: Photoinduced Radical Chemistry of Imidazolium Salts

Angewandte Chemie, Volume 138, Issue 24, 8 June 2026.
Visible‐light excitation of electron donor–acceptor (EDA) complexes between imidazolium salts and triarylamines enables controlled single‐electron transfer (SET) and reveals a family of carbene‐centered σ‐complex radical cations. Cryogenic electron paramagnetic resonance (EPR) captures the elusive [NHC─H]• intermediate and its thermal evolution into ...
Filipp M. Kolomeychuk, Lars J. C. van der Zee, Simon Mathew, Bas de Bruin, J. Chris Slootweg   +4 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

Protium subserratum (Engl.) Engl. from Colombia collected by F. Moreno y C. Carvajal #2465

, 2012
File Name: TOLI-24486-PER-01-W3-24.jpg CÓDIGO FOTO: TOLI-24486-PER-01-W3-24- Fotografía: SI Nº TOLI: TOLI-24486 PARCELA: PER-01 CÓDIGO: W3-24 Nº COLECTA: 2465 NUEVOS COLECTORES: Esteban Álvarez Dávila COLECTORES: F. Moreno y C.
Carvajal, C., y, Moreno, F., Carvajal, C., y, Moreno, F. (8341500)   +1 more
core   +1 more source

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

Native tree species diversity of Rampahar Natural Forest Reserve in Rangamati South Forest Division, Bangladesh

Ceylon Journal of Science, 2018
Tropical forests of Bangladesh are facing rapid loss in floristic diversity and resultant changes of vegetation necessitates the assessment of plant composition and diversity.
Bishwajit Chowdhury, Mohammed Kamal Hossain, Md. Akhter Hossain, Bayezid Mahmud Khan   +3 more
doaj   +1 more source